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60results about How to "Control PH value" patented technology
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Production method for electrolytic manganese dioxide
ActiveCN102220490AWide adaptabilityShort processElectrolysis componentsCleaning using liquidsSlurryManganese oxide
The invention relates to a production method for electrolytic manganese dioxide. The method comprises the following steps of: A. preparing a mixed liquid of crude manganese sulfate and slurry; B. neutralizing the mixed liquid to remove iron; C. carrying out three-time deep purification on the crude manganese sulfate solution including first purification to remove heavy metals, second purification to remove trace element molybdenum and third purification to remove calcium sulfate and magnesium sulfate; D. electrolyzing; E. rinsing including six steps of washing acid with hot water, rinsing with a weak base, rinsing with a strong base, washing base with hot water, backwashing with a diluted acid and rinsing with hot water; F. milling; and G. mixing to obtain an electrolytic manganese dioxide product. According to the invention, low-grade manganese oxide ore is used as a main raw material to prepare a manganese sulfate solution, the manganese sulfate solution is subjected to deep purification treatment to obtain a high-purity electrolyte, high-performance electrolytic manganese dioxide special for mercury-free alkaline cells and automobile power cells can be respectively produced under different electrolysis conditions, and the obtained electrolytic manganese dioxide product has low impurity content and high quality.
Owner:GUANGXI GUILIU CHEM CO LTD +1
Koala velvet and production method thereof
InactiveCN101440552ASolve looseSolve the feelWarp knittingHeating/cooling textile fabricsFiberMaterials preparation
The invention discloses koala flock and a method for manufacturing the same. The koala flock is manufactured by taking 56 to 83dtex Shaoguang flat cross section fibers or semi-Shaoguang flat cross section fibers as koala flock face fibers, and 56 to 76dtex terylene FDY as bottom fibers, whereinthe 56 to 83dtex Shaoguang flat cross section fiber or semi-Shaoguang flat cross section fiber is 30 to 85 portions, and the 56 to 76dtex terylene FDY is 15 to 50 portions. The method comprises production processes of material preparation, weaving, thermal shaping, dyeing, treatment after dyeing, dewatering, colored cloth shaping, front face gigging, finished cloth shaping, combing, scalding, clipping and the like, and the flat fibers are used to replace the conventional circular fiber, so that the simulated koala flock with unique style is produced. The height of the koala flock is between 0.5 and 7mm, and the koala flock touches soft and smooth, and can be widely used in the production of flock toys, indoor flock slippers, blankets, knitting flock and the like, and can fully meet market demands.
Owner:ZHANGJIAGANG JINGDONG KNITTING PLUSH
Preparation method of 1, 3-butylene glycol
ActiveCN109422624AControl PH valueTemperature controlOrganic compound preparationHydroxy compound preparationFixed bed1,3-Butanediol
The invention provides a preparation method of 1, 3-butylene glycol. The preparation method comprises following steps: A, acetaldehyde is introduced into a fixed bed reactor, under the effect of a supported type solid basic catalyst, aldol condensation reaction is carried out so as to obtain 3-hydroxybutyraldehyde; and B, 3-hydroxybutyraldehyde is subjected to continuous hydrogenation reaction inthe fixed bed reactor so as to obtain 1, 3-butylene glycol. According to the preparation method, the fixed bed reactor is adopted, at the same time, the supported type solid basic catalyst is adoptedto replace a conventional liquid alkali (such as sodium hydroxide) catalysts, and in the step of hydrogenation reduction, a supported nickel hydrogenation catalyst is adopted. The preparation method is capable of solving problems in the prior art product quality is poor, product yield is low, technology process is complex, and a large amount of waste water and waste residue is generated; aldol condensation quenching step is avoided; side reactions are reduced; relatively high reaction conversion rate and yield are achieved; no neutralizing or desalting process is needed in reaction process; and great improvement of traditional 1, 3-butylene glycol preparation technology is realized.
Owner:DONGYING HI TECH SPRING CHEM IND
Preparation method for large-area nano zinc oxide directional array
InactiveCN101122020AUniform shapeSimple processZinc oxides/hydroxidesVacuum evaporation coatingHexamethylenetetramineZno nanoparticles
A method of preparing large scale nano zinc dioxide directional array belongs to the technical field of preparation of nano material directional arrays. The technology subsequently includes the following procedures: the silver nitrate and hexamethylenetetramine are diluted into water as a reacting solution, and the pH value of the solution can be regulated by adding alkaline substances; a cleaned basal is provided; a layer of zinc oxide film is deposited on the surface of the basal, or the zinc salt solution well prepared is evenly applied on the surface of the basal and sintered; the treated basal is put into the reacting solution and the temperature is preserved for a period of time; the basal is taken out, cleaned and dried, and the nano zinc dioxide array is obtained. The invention has advantages that high orientation and high purity nano zinc dioxide arrays can be rapidly prepared on a large area, the shape and appearance can be controlled, the technology is simple and the cost is low.
Owner:UNIV OF SCI & TECH BEIJING
Iron oxide yellow viscosity reduction method
InactiveCN103305032AReduce product viscosityBroaden the field of applicationPigment physical treatmentFilter cakeInorganic chemistry
The invention discloses an iron oxide yellow viscosity reduction method. The method comprise the steps of: adding water into industrial-grade iron oxide yellow filter cakes to pulp and disperse, adding the iron oxide yellow and the water into a reaction barrel to form a10-14% pulp, controlling the temperature to be 70-85 DEG C, then adding an alkaline liquor to control the PH value of the pulp to be 9.0-9.5, and stirring for 3.5-4 hours at high speed. The method is simple and convenient, the iron oxide yellow can be quickly reduced without metal ions or oxides addition, and the iron oxide yellow viscosity can be reduced by 30-34KU.
Owner:南通宝聚颜料有限公司
Method for annealing and pickling 409L stainless steel
InactiveCN102864459AEffective adjustment of specific gravityEffectively adjust PH valueHeating timeElectrolysis
The invention discloses a method for annealing and pickling 409L stainless steel through neutral salt electrolyzing and mixed acid pickling technology. The method comprises the steps as follows: a, annealing, controlling the concentration of excess oxygen to 3 to 5%, controlling the heating temperature to 950-1100 DEG C, wherein the heating time is 1 to 3 minutes per millimeter based on thickness; b, electrolyzing, and controlling the specific gravity of neutral salt to 1.2 to 1.24, pH to 3.5 to 4.5, temperature to 70 to 90 DEG C, and current strength in electrifying to 4500 to 5500A; and c, pickling, wherein pickling solution in the first stage includes 9 to 13% of HNO3 and 0.1 to 0.2% of HF, pickling solution in the second stage includes 11 to 15% of HNO3 and 0.1 to 0.2% of HF, the temperature of the pickling solutions in the two stages is at 50 to 60 DEG C, and the pickling time is 30 to 50 seconds. With the adoption of the method disclosed by the invention, the collinear annealing and pickling of FeCr system and FeCrNi system stainless steels can be achieved; and good 2D surface can be obtained.
Owner:YUNNAN TIANGAO NICKEL IND CO LTD
Fire retardant finish material and method for finishing fabric using the material
ActiveCN101381958ASoft touchControl PH valueFibre treatmentDry-cleaning apparatus for textilesPhosphoric acidProcess engineering
The invention discloses a flame-retardant finishing material and a method for using the material to finish fabric. The flame-retardant finishing material is prepared by adding flame retardant, melamine resin, fiber protecting agent, nonionic penetrating agent and phosphoric acid into water used as a solvent. The method finishes the fabric according to the following steps of controlling the pH value of cloth cover not to exceed 8, performing flame-retardant finishing through a dyeing hot-air padding machine, drying, neutralizing through a washing machine, tentering and preshrinking. The fabric finished by the method has good comprehensive effects in formaldehyde content, fiber strength, hand feeling and other index. In particular, the situation of irregular left, middle and right is effectively avoided by adopting the dyeing hot-air padding machine to pad the flame-retardant finishing material. The construction characteristics of the dyeing hot-air padding machine effectively avoid the migration of the cloth cover in a pre-drying process, allow the finishing material to enter the inside of fiber more easily, and allow the hand feeling of the predried-offloaded fabric to be soft. In addition, during washing neutralization, hydrogen peroxide is used to neutralize cloth cover formaldehyde, thereby effectively controlling the formaldehyde content of the fabric.
Owner:ZHEJIANG MIZUDA TEXTILE PRINTING & DYEING TECH CO LTD
Method for pickling pepper
The invention discloses a method for pickling pepper. The method comprises the following steps: preparing firstly pickling liquid by mixing 400kg of cold boiled water, 100kg of salt, 1.5kg of citric acid, 1.5kg of sodium sulfite and 0.15kg of turmeric and fully stirring to dissolve; mixing secondly pepper with the pickling liquid to pickle for about 30 days; and subpackaging the obtained pepper and then selling the product in the market. The pH value of the pickled pepper is about 4, the acidity is proper; when discharged, the pickled pepper is full of delicate fragrance; 85% of pepper is bright yellow, which is very bright-colored and beautiful; and the colour and lustre of the appearance are attractive. The method for pickling pepper is suitable for the pepper processing factory or family.
Owner:永州市岚山天然食品有限公司
Blueberry planting method
The invention discloses a blueberry planting method. The blueberry planting method includes the following steps: garden selection, wherein the garden is a sandy soil land which is wide and is excellent in drainage performance; garden reconstruction, wherein the land is deeply turned over before the blueberry is planted, NO2 is used to improve the soil, the pH of the soil is 3.5-5.0, the width of ridges is 5.0-5.5 meters, two sides of the ridges are provided with drainage ditches; young seedling planting, planting holes are dug in the ridges of the garden, a basic fertilizer having the thickness of 6-8 cm is paved over the planting holes, a clay layer having the thickness of 1.5-2.0 cm is paved over the basic fertilizer, the blueberry seedlings in the clay layer are vertically put in the planting holes, and one-year-old blueberry seedlings and three-year-old blueberry seedlings are planted alternatively; and planting management including fertilizer application, pruning, irrigation, weeding and disease control. The blueberry planting method can achieve batch and standard planting of the blueberry, can ensure the quality and the yield of the blueberry, can increase the economic benefits, and can meets the demands of planters.
Owner:FENGGANG LANYI AGRI SCI & TECH DEV CO LTD
Finished product ammonium nitrate aqueous solution pH value controlling method and device thereof
InactiveCN103497078APH value quickly reaches the standardControl PH valueExplosivesAir compressorAqueous solution
The invention provides a finished product ammonium nitrate aqueous solution pH value controlling method comprising the steps that: temperature and pressure of ammonium nitrate aqueous solution in a storage tank are adjusted; compressed air stirring is carried out; self circulation mixing is carried out by using a circulation conveyor pump; and acid liquid or alkali liquid is added according to the calculation of pH value, such that pH value is adjusted. The invention also provides a controlling device comprising the storage tank. An air distributor is horizontally arranged in the middle in the storage tank. The air distributor is connected with an air compressor arranged outside the storage tank through a first pipe. An acid / alkali tank used for adjusting the pH value is connected in the first pipe. The circulation conveyor pump is connected at an outlet end on the bottom of the storage tank. The outlet end of the circulation conveyor pump communicates with the upper end of the storage tank through a second pipe. The outlet end of the second pipe is positioned at the middle-upper part of the storage tank. With the method and the device provided by the invention, ammonium nitrate aqueous solution pH value can be precisely and rapidly controlled, such that application requirement can be satisfied, and safety during the application process can be ensured.
Owner:ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
Factory-like recirculating aquaculture system for Hucho taimen
InactiveCN108552100AControl PH valueFast growthPisciculture and aquariaHucho taimenBiological filter
Provided is a factory-like recirculating aquaculture system for Hucho taimen, pertaining to the technical field of aquaculture. The key points of the system are described in that outlet ends of aquaculture ponds communicate with a sedimentation pond through pipelines; the sedimentation pond is located on the side of the aquaculture ponds; a microfiltration machine pond is arranged on the side of the aquaculture pond; additionally, an outlet end of the sedimentation pond communicates with an inlet end of the microfiltration machine pond; the side of the microfiltration machine pond is equippedwith a water return pond; aquaculture water at an outlet end of the microfiltration machine pond and an inlet end of the water return pond as well as in the water return pond enter a floating ball-type biological filter through a pipeline and a water pump; an outlet of the floating ball-type biological filter communicates with a trickling filter through a pipeline and a water pump; the trickling filter is located above an oxygenating tank; the oxygenating tank is disposed on the side of the water return pond; the interior of the oxygenating tank is equipped with an ultraviolet radiation disinfection device; the ultraviolet radiation disinfection device communicates with the oxygenating tank; water in the oxygenating tank communicates with the aquaculture ponds through pipelines. The factory-like recirculating aquaculture system for Hucho taimen is used for factory-like aquaculture of Hucho taimen.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
Factory-like circulating water breeding method for hucho taimen
InactiveCN108029598AControl PH valueFast growthClimate change adaptationPisciculture and aquariaFecesJuvenile fish
The invention relates to a factory-like circulating water breeding method for hucho taimen, and belongs to the technical field of aquaculture. The method is characterized in that a hucho taimen circulating water breeding system is connected with a hucho taimen juvenile fish breeding system, juvenile fishes are subjected to tameness and cultivation and parallel screening in sequence, fish fry of different sizes are put into multiple breeding ponds respectively, water drained from the breeding ponds passes through a settling pond and a micro filter tank, and then residual feed and fecal suspensions are filtered and removed; detection is conducted by means of a PH online monitoring system, and the PH value of breeding water is adjusted; the breeding water enters a floating type biofilter through a water pump to remove organic matter such as ammonia nitrogen, nitrate and nitrite; harmful gas such as CO2 is removed in a trickling filter; pure oxygen is increased in an oxygen increasing groove; water obtained after oxygen increasing is subjected to ultraviolet ray disinfection; finally, the breeding water automatically flows into the breeding ponds through an oxygen increasing high-levelwater tank, and the whole hucho taimen circulating water breeding process is completed. The method is used for factory-like hucho taimen breeding.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
Novel mildew-proof pest control agent for wood
InactiveCN107351208AImprove qualityControl PH valueWood treatment detailsWood impregnation detailsVegetable oilPest control
The invention relates to a novel mildew-proof pest control agent for wood. The novel mildew-proof pest control agent for the wood is mainly prepared from, by mass, 30-50 parts of carbendazim, 20-40 parts of silicone oil, 10-20 parts of borax, 5-8 parts of glycerin, 5-10 parts of semi-drying vegetable oil and 80-120 parts of water. The novel mildew-proof pest control agent for the wood has the advantages that the mildew-proof pest control agent for the wood is not a single protective agent, the mildew-proof and pest control comprehensive effect is achieved, and the control effect is significant. Particularly, the good effect is achieved on tableware wood products and decorative wood products, and no peculiar smell exists for a long time.
Owner:南通盛赫园林古建筑工程有限公司
Fermentation method capable of reducing content of heavy metal cadmium in rice
ActiveCN105341674AImprove elimination efficiencyReduce contentFood scienceLactobacillus salivariusBacterial strain
The invention discloses a fermentation method capable of reducing the content of heavy metal cadmium in rice. According to the invention, stable fermentation broth is prepared through necessary soaking or fermentation procedure of deep processing of milled early long-grain non-glutinous rice, and the simple and low-cost method using the stable fermentation broth for reducing the content of heavy metal cadmium in rice is provided. A bacterial strain in traditional fermentation broth, e.g., lactobacillus plantarum, lactobacillus fermenti, lactobacillus salivarius and yeast, is employed to improve the nutrient structure in an impregnation solution used in the process of fermentation, so nutrient supply in the process of microbial fermentation can be increased, the growth rate of microbes is promoted, and the number of live bacteria of the microbes in the impregnation solution is increased in a certain period of time. Through improvement of the vitality of lactic acid bacteria, increase of the acidity of the impregnation solution can be accelerated, and impregnation of the acid solution is capable of reducing the content of heavy metal cadmium in rice. In virtue of acid production of the lactic acid bacteria, a complexing bond between the heavy metal cadmium and protein is broken, so cadmium is dissociated; a part of cadmium is adsorbed in virtue of membrane absorption of the microbes at the same time; thus, the content of heavy metal cadmium in rice is substantially reduced after washing.
Owner:GAEA GEM RICE
Sodium dichloroisocyanurate powder
InactiveCN101897335AControl PH valueHigh germicidal effectBiocideDisinfectantsPh bufferingCurative effect
The invention discloses sodium dichloroisocyanurate powder comprising the following raw materials in percentage by total weight: 18-22 percent of sodium dichloroisocyanurate, 0.9-1.1 percent of sodium tripolyphosphate, 1.5-2 percent of sodium silicate and the balance of auxiliary materials. In the product, the sodium tripolyphosphate is added as a pH buffering agent to effectively control the pH value of the product and enable the main component of the sodium dichloroisocyanurate powder to act under the optimal acid condition, thereby achieving the best effect for killing bacteria; meanwhile, an assistant of the sodium silicate is added so as to improve the stability of the product, prolong the validity period and the action period, and maintain the curative effect to be longer.
Owner:潘运平
Texturing cleaning method and heterojunction battery
InactiveCN110828299AThorough treatmentEasy to cleanFinal product manufactureSemiconductor/solid-state device manufacturingHeterojunctionPhysical chemistry
The invention discloses a texturing cleaning method and a heterojunction battery. The texturing cleaning method comprises the following steps of 1, using a mixed solution containing ozone to preprocess a silicon wafer, and generating an oxidation layer where pollutants are attached on a surface of the silicon wafer in a preprocessing process; 2, removing the oxide layer on the surface of the silicon wafer through an alkali liquor; 3, carrying out oxidative cleaning on the silicon wafer after water washing, and generating an oxide layer on the surface of the silicon wafer again in a cleaning process; 4, texturing the silicon wafer through the alkali liquor; 5, washing the silicon wafer for at least one time; 6, decontaminating the silicon wafer by using the alkali liquor containing hydrogenperoxide; 7, after water washing, carrying out rounding treatment on the surface of the silicon wafer by using an ozone-containing acid solution; 8, carrying out acid washing on the silicon wafer after the water washing; and 9, drying the silicon wafer after the water washing. The method has advantages of low cost, good suede consistency, environmental protection and the like.
Owner:CHANGZHOU S C EXACT EQUIP +1
Moving bed anaerobic fermentation reactor
PendingCN107151624ASolve the difficulty of pretendingElimination concentrationApparatus sterilizationGas production bioreactorsBiogas productionSlurry
A moving bed anaerobic fermentation reactor can be used for producing biogas. The reactor includes a tank body, a gas collecting hood, a water outlet tube and a water inlet tube. The gas collecting hood is arranged at the upper part of the tank body, a porous baffle plate is arranged under the gas collecting hood, an upper moving bed and a lower moving bed are arranged below the baffle plate, and the upper moving bed is provided with a lifting device. An airbag is arranged below the lower moving bed, and a side door is arranged at the lower part of the tank body. When the reactor works, the tank body is filled with straws and other fermentation materials from the side door through a loader to make a space between the baffle plate and the lower moving bed full; a biogas slurry is injected to submerge the lower opening of the gas collecting hood, and anaerobic fermentation is carried out;; the volume of the fermentation materials continuously decrease with the discharge of biogas, and the airbag is timely inflated and expands to keep the liquid level unreduced; and liquid discharge and residue discharge are sequentially carried out after the biogas production is finished. The reactor has the advantages of less water, direct reuse of sewage, zero emission, high efficiency and convenience in material feeding and discharging, and less device investment.
Owner:李江平
Method for modifying ternary composite material
InactiveCN108899509AImprove electronic conductivityControl Ph valueCell electrodesSecondary cellsWater bathsHigh rate
The invention belongs to the field of lithium ion battery materials, and particularly relates to a method for modifying a ternary composite material. The preparation method comprises the following steps: firstly uniformly stirring silver sulfate and thiourea which respectively serve as a silver source and a sulfur source, ammonium chloride serving as a buffering agent, ammonia water and hydrazineserving as a combined complexing agent, adding a ternary material precursor; performing a water bath reaction; and finally preparing the ternary composite material having an inner core of LiNixCoyMn(1-x-y)O2 and shell of silver sulfide. The ternary composite material has high rate performance and cycling performance.
Owner:JIANGSU LENENG BATTERY INC
Simulation reaction method for producing denatured rice starch with high degree of substitution by using wet-process
The invention discloses a simulated reaction method for producing modified rice starch with high degree of substitution by a wet method. The method comprises the following procedures: taking rice starch as a raw material, preparing the starch into starch milk and respectively adding the starch milk to a simulated reactor and a big reaction kettle proportionally; controlling the temperature and reaction time by the big reaction kettle according to instant feedback data of the simulated reactor, and adding a reaction reagent and pH regulating reagent according to feedback instructions. The method is characterized by instantly instructing the big reaction kettle to add according to the given adding amount and adding speed of the pH regulating reagent after computer processing of instant reaction parameters obtained by the simulated reactor, effectively controlling pH value of the reaction system so as to enhance the degree of substitution. The method has the advantages of reducing production cost, helping expand application of the modified rice starch to various fields, enhance grades of food, cosmetics, medicines and textile products, and reduce product cost.
Owner:曹镜明
Wastewater treatment apparatus and control method thereof
PendingCN112551675AImprove the effectAchieve neutralizationWater treatment parameter controlWaste water treatment from gaseous effluentsEmulsionPre treatment
The invention relates to the technical field of desulfurization wastewater pretreatment, and discloses a wastewater treatment device, which comprises a configuration system, a storage system, a firstconveying system, a neutralization system, a second conveying system and a control system, and is characterized in that the control system is electrically connected with a first liquid level meter, aconveying pump, a dosing pump and a PH detector; the invention also discloses a control method for the wastewater treatment system, which comprises the following steps: acquiring the pH value in the neutralization tank, comparing the pH value with a preset pH value, and controlling the frequency of the dosing pump according to the pH value comparison result, thereby controlling the amount of limeemulsion added into the neutralization tank by the chemical storage tank; and obtaining liquid level information of the medicine storage box, and controlling the opening and closing of the conveying pump according to the liquid level information. According to the device and the control method, the structure is simple, the operation is easy, the lime emulsion preparation precision and the neutralization tank pH value regulation precision are improved, the labor intensity of personnel is reduced, and meanwhile, the safe and stable operation of a desulfurization wastewater pretreatment system isimproved.
Owner:广州中电荔新热电有限公司
Preparation method of high-strength concrete accelerator
InactiveCN108249810AAdjust viscosityAdjust the degree of dispersionHigh strength concreteAlkali free
The invention discloses a preparation method of a high-strength concrete accelerator, which relates to a preparation method of a concrete admixture, in particular to the preparation method of the high-strength concrete accelerator. The method comprises the following steps of taking aluminum sulfate as a base stock of an alkali-free accelerator, and on the basis, adding adjuvants such as sodium fluoride, sodium silicate, xylene, naphthalenesulfonic acid-formaldehyde condensate, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose so as to play a part in increasing concrete strength, accelerating reaction rate and the like. When reaction is performed to a certain extent, phosphoric acid and methacrylic acid are added finally, an added acid solution plays a certain assistantpart to effectively adjust the pH value of a reaction system, so that a final product can effectively play a part in quick setting while not corroding steel materials in a concrete system to influence the strength of concrete in later stage. The preparation method is simple and good in effect.
Owner:云南森博混凝土外加剂有限公司
Production method of EDTA
InactiveCN107501111AEasy to removeLess side effectsOrganic compound preparationAmino-carboxyl compound preparationEthylenediamineSodium cyanide
The invention discloses a production method of EDTA (ethylenediaminetetreacetic acid). The production method is characterized by preparing EDTA by taking sodium cyanide, ethanediamine, formaldehyde and liquid caustic soda as raw materials and comprises the following steps: (1) condensation reaction: adding part of a sodium cyanide solution, a liquid caustic soda solution and ethanediamine into a condensation reaction kettle, then starting stirring, then switching on a steam regulating valve, then increasing the temperature to 88-95 DEG C, dropwise adding formaldehyde and the remaining sodium cyanide solution, condensing the tail gas generated in the reaction process and absorbing the tail gas under negative pressure, adding hydrogen peroxide after the reaction is ended, and decolorizing to obtain a condensed material; (2) acidification reaction: adding the condensed material into an acidification reaction kettle, starting stirring, opening an acidification condenser, adding return water into the acidification condenser, adding hydrochloric acid into a reaction kettle till the pH of the reaction kettle is 2.1-4, carrying out centrifugal separation on the precipitated crystal to obtain an EDTA wet material, then carrying out airflow drying to obtain EDTA. Through the production method, the occurrence of side reactions is reduced; the purity of EDTA is improved; the conditions are provided for directly preparing sodium salt; the process steps are simplified.
Owner:潍坊滨海石油化工有限公司
Ultrasonic contrast agent
InactiveCN106943606ANo side effectsStable structureEchographic/ultrasound-imaging preparationsSide effectMicro bubble
The invention belongs to the field of medical science, and especially relates to an ultrasonic contrast agent. The ultrasonic contrast agent is composed of a solution, and coated gas; the solution is composed of carboxy polymethleme, an alkaline amino acid, a phosphatide, ethanol, polylactic acid, monoglyceride stearate, and a salt solution with a concentration ranging from 1.2 to 2.3%. According to the ultrasonic contrast agent, micro bubbles possess no toxic or side effect; foam film structure is stable; a preparation method is simple and controllable; the ultrasonic contrast agent possesses excellent acoustic responsiveness, can be taken as an effective ultrasonic contrast agent; application range is wide; the particle size of 95% micro bubbles ranges from 2 to 4<mu>m; particle size distribution is uniform; and clinical application prospect is promising.
Owner:贵州灿石正科信息咨询服务有限公司
Quality control system of storage tank ammonium nitrate water solution
InactiveCN103482652APlay a buffer roleConsistent concentrationAmmonium nitratesCombustionControl system
The invention provides a quality control system of a storage tank ammonium nitrate water solution, which comprises a storage tank, wherein the upper part of the storage tank is provided with a filter; the filter is communicated with the top end of the storage tank through a pipeline; the inside of the storage tank is respectively provided with an air distributor and a heating tube; the air distributor is connected with an air compressor arranged outside the storage tank through a first pipeline; an outlet end positioned at the bottom end of the storage tank is connected with a circulating delivery pump; an outlet end of the circulating delivery pump is communicated with the upper end of the storage tank through a second pipeline; and the top end of the storage tank is connected with an acid-alkali tank for regulating the PH value. The control system can control the concentration, PH value, combustion residue and solution temperature index of the ammonium nitrate water solution, so that the ammonium nitrate water solution can comprehensively satisfy the standard requirements or demands of customers, and ensure the use safety.
Owner:ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
Intelligent management system of domestic wastewater
InactiveCN106698866AControl PH valueSave domestic water costsMultistage water/sewage treatmentAluminium chlorohydrateHazardous substance
The invention relates to an intelligent management system of domestic wastewater. The intelligent management system comprises a wastewater settling tank, a wastewater purification tank, a clean water tank and a control system, wherein the wastewater settling tank is used for collecting the domestic wastewater and is connected with the wastewater purification tank through an immersible pump; aluminum polychlorid and a liquid level sensor are placed in the wastewater settling tank; the wastewater purification tank is used for treating harmful substances in the wastewater and is connected with the clean water tank through the immersible pump; microorganisms, zeolite and a liquid level sensor are fed into the wastewater purification tank; the clean water tank is used for storing a water source and conveying the water source to a water utilization place; a water conveying pump, a backflow pump, a liquid level sensor and a PH detector are arranged in the clean water tank; the backflow pump is connected with the clean water tank and the wastewater purification tank; the water conveying pump is connected with a pipeline of the water utilization place; the control system is connected with the liquid level sensors, the PH detector, the immersible pump, the backflow pump, the water conveying pump and an electromagnetic valve; the electromagnetic valve is arranged on the pipeline of the water utilization place. The intelligent management system is mainly used for simple treatment of the wastewater, thus realizing recycling.
Owner:黄科钧
Wound flushing fluid as well as preparation method and application thereof
PendingCN112656812AImprove the ability to remove bacteriaReduce the incidence of wound infectionAntibacterial agentsAntisepticsBiomedical engineeringPhosphate
The invention belongs to the field of medicine, and discloses a wound flushing fluid. 1L of the wound flushing fluid comprises 0.5-10 g of EDTA, 1-4 g of hydrogen peroxide, 0.5-2 g of iodophor, 1.5-8 g of disodium hydrogen phosphate, 0.5-10 g of potassium dihydrogen phosphate and hypertonic saline water, wherein the concentration of the hypertonic saline water is 95-100 mmol / L, the PH value of the wound flushing fluid is 7.4, and the wound flushing fluid is sterilized. According to the invention, the high-permeability saline water added with EDTA (Ethylene Diamine Tetraacetic Acid) is used as the wound flushing fluid, so that the bacterium removal capability can be improved, and the wound infection occurrence rate is reduced; therefore, the problem of insufficient degerming capacity of normal saline in the prior art is solved; besides, the EDTA is widely applied to clinical treatment and has good safety to human bodies, is low in price and convenient to popularize and use.
Owner:上海盈舜医疗科技有限公司
Electrode slurry for plasma display and application thereof
InactiveCN101728156ASolve the shortcomings of easy gel precipitationControl PH valueSolid cathode detailsCold cathode manufactureDouble bondSlurry
The invention provides electrode slurry for a plasma display. The electrode slurry comprises an organic matter component, silver powder and low melting-point glass powder, wherein the organic matter component comprises a copolymer skeleton of methyl methacrylate and methacrylic acid; part of carboxyl of the copolymer skeleton have a structure of unsaturated double bond by introducing propylen acyloxy; and all the rest of carboxyl of the copolymer skeleton is neutralized by aqua ammonia. The invention also provides application of the electrode slurry in manufacturing the plasma display. The electrode slurry formed by the invention can be stably stored for a long time and can develop by using pure water.
Owner:SICHUAN COC DISPLAY DEVICES
River sewage high-efficiency treatment and purification device for irrigation
PendingCN108298748AAvoid enteringEasy to handleWater/sewage treatment by irradiationSpecific water treatment objectivesClamp connectionActivated carbon filtration
The invention discloses a river sewage high-efficiency treatment and purification device for irrigation. The device comprises a water collecting tank, the lower portion of the water collecting tank isprovided with a baffle plate, the upper portion of the baffle plate is in clamping connection with a polypropylene filter bag, the water collecting tank is connected with a water pump through a waterinlet pipe, the water pump is connected to a sterilization chamber through a water outlet pipe, the inner wall of the sterilization chamber is provided with an ultraviolet lamp, the lower portion ofthe sterilization chamber is provided with an activated carbon filter screen, a reaction chamber is formed in the lower portion of the activated carbon filter screen, one side of the reaction chamberis provided with a medicine feeding tube, the side of the medicine feeding tube is provided with blades, the blades are rotatably connected with a motor through a rotating shaft, a reverse osmosis membrane is mounted on one side of the reaction chamber, and a water purification tank is disposed on one side of the reverse osmosis membrane. The device achieves the treatment of river sewage simply and efficiently, prevents waste of water resources, fully and effectively achieves purification treatment of the river sewage, and provides convenience for irrigation of the river sewage.
Owner:FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
Flue gas desulfurization and denitrification optimization control method based on hysteresis model
PendingCN114225662AHigh precisionImprove accuracyDispersed particle separationSlurryControl parameters
The invention relates to a hysteresis model-based flue gas desulfurization and denitrification optimization control method, which comprises the following steps of: establishing a power plant desulfurization and denitrification system simulation model through dynamic simulation software according to modular modeling and a control strategy; establishing a first delay time prediction model for the time delay existing in the determination of the pH value of an absorption tower in the desulfurization system, and establishing a second delay time prediction model for the time delay existing in the determination of the concentration of flue gas nitrogen oxide at the inlet of the denitration system through a flue gas online monitoring device CEMS; predicting the concentration of sulfur dioxide at a desulfurization outlet and the concentration of nitrogen oxide at a denitration inlet by adopting a support vector machine model; controlling the slurry spraying amount according to the predicted value of the sulfur dioxide concentration in combination with a first lag time prediction model, and controlling the ammonia spraying amount according to the predicted value of the nitrogen oxide concentration in combination with a second lag time prediction model; and the control parameters are issued to the desulfurization and denitrification system simulation model for intelligent diagnosis.
Owner:STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +2
Production method for electrolytic manganese dioxide
ActiveCN102220490BWide adaptabilityShort processElectrolysis componentsCleaning using liquidsElectrolytic agentManganese sulphate
Owner:GUANGXI GUILIU CHEM CO LTD +1
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