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30 results about "Chemical procedure" patented technology
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Method for modifying a medical implant surface for promoting tissue growth
InactiveUS20080091234A1Without excessive fibrosisIncreased riskCoatingsSurgical veterinaryBioabsorbable polymerPolyhydroxybutyrate
Disclosed is an occluder for closing an intracardiac defect, such as a patent foramen ovale (PFO), and a method for making the same. The occluder includes a frame and at least one scaffold which are formed from a bioabsorbable polymer, such as poly-4-hydroxybutyrate. The surface of the frame and scaffold are textured to promote cell attachment. Texturing of the surface can be achieved by any number of mechanical or chemical procedures. The device is coated with collagen and heparin which are covalently bound to the surface of the device. The occluder provides improved defect closure compared to other septal occluders known in the art. In particular, the occluder described is specifically designed to improve host cell attachment to and tissue ingrowth over the device when implanted in a patient as compared to the level of host cell attachment and tissue ingrowth achieved with other implantable devices made of bioabsorbable polymers.
Owner:WL GORE & ASSOC INC
Process for electrolyzing preparing electrolyte of full vanadium ion flow battery
InactiveCN1598063ASimplify the assembly processExtended service lifeElectrolysis componentsLead-acid accumulatorsLiquid cellVanadyl sulfate
The invention relates to the field of the cell manufacturing and especially relates to a method of preparing the electrolyte of the vanadium ion liquid cell, making the 1:1 thin vitriol from the thick vitriol, adding the trioxid bi-vanadium and then the five-trioxid bi-vanadium to get the vitriol oxide vanadium; adding the Na2SO4, emulsification agent OP and other additive, placing the vitriol oxide vanadium at the cathode of the electrolytic cell and the same ion intension at the anticathode and electrolyse, getting the vitriol electrolyte used for vitriol batteries which includes half quadrivalence vanadium and half tervalent vanadium. The invention simplyfy the equipment of vitriol batteries and chemical procedure, enhance the work efficiency, extend the use time of the functional materials of vitriol batteries, such as the electrode and the dissepiment, needn't change the electrolyte of the anode, avoid wasting raw material, avail the producing by large scale.
Owner:攀枝花钢铁有限责任公司钢铁研究院 +1
Method for synthesizing fatty acid methyl ester
InactiveCN101195572ALow costHigh energy consumptionFatty acid esterificationPreparation by ester-hydroxy reactionChemical reactionHydrolysis
The invention discloses a method for synthesizing fatty acid methyl ester , which belongs to process and technique field of ester material through chemical modification, the procedures of the method comprises that fat raw material is filtered to remove impurity and heated to 160 DEG C in the preheater and is pressurized to 1-4 Mpa after dehydrating in the continuous vacuum flash evaporation dehydrator under the pressure of -0.09 Mpa and is heated to 110-240 DEG C by preheater and enters in the esterifying reaction tower from the top continuously. The raw material carbinol is pressurized to 1-4 Mpa by water pump and is heated to 110-240 DEG C after vaporizing, and then enters in the esterifying tower through gas distributor from the bottom of the esterifying reaction tower. The fat raw material from top to bottom and carbinol gas from bottom to top are in countercurrent contact to generate chemical reaction and chemical procedures as hydrolysis, esterification and ester exchange and stripping, adsorption, rectification and the like to produce product acted by high temperature and pressure. Compared with the prior art, the invention is low in raw material cost, little in equipment corrosion and small in carbinol consumption.
Owner:SICHUAN GUSHAN VEGETABLE FAT CHEM CO LTD
Chemical procedure modelling approach possessing reconstructed operation RNA genetic algorithm
InactiveCN101339628AImprove the disadvantages of premature convergenceIncrease diversityGenetic modelsMathematical modelSpecies groups
The invention discloses a chemical engineering process modeling method of an RNA genetic algorithm with remodeling operation, which has the following steps: 1) actual input and output sampling data is obtained by on-site operation or experiment, and then the sum of the absolute value of the error between the estimated output and the actual output of a chemical engineering process model is used as the objective function of the RNA genetic algorithm for optimization research; 2) algorithm control parameters is set; 3) the RNA genetic algorithm with remodeling operation is operated to do estimation for the unknown parameters of the chemical engineering process model, then the estimated value of the unknown parameters of the chemical engineering process model is obtained by the minimized objective function, and the estimated value of the unknown parameters is substituted into the chemical engineering process model to form a mathematical model of the chemical engineering process. The excellent genes of original species group is preserved when the diversity of the species group is increased effectively, thereby avoiding the defects of the premature convergence of traditional genetic algorithm and the convergence of locally optimal solution better.
Owner:ZHEJIANG UNIV
Interface for chemical procedure information
InactiveUS20100175005A1Easy to transportFacilitates later searchingCheminformatics data warehousingChemical processes analysis/designComputer scienceUser interface
A pocket-sized, portable computing apparatus that performs frequently used laboratory calculations, provides a look-up function for commonly used data and procedures, and provides note-taking and data capture for record-keeping. The present invention displays data in a form that a chemist finds most convenient and manipulates this data with functions a chemist typically utilizes in his work. In addition, the present invention provides a user interface that is compatible with traditional methods for formula manipulations and chemistry workflows and that increases the efficiency of the user in performing laboratory tasks.
Owner:ABACALAB
Non-segmented composite barrel for gas operated firearms
A method of making a continuous fiber barrel wrap sheath onto a steel riffled barrel liner of a gas-operated firearm is described. A wrap made up of composite fiber is wrapped onto a steel riffled barrel liner in a continuous fashion, with no interruption within the steel liner for the purpose of delivering high pressure gas through the steel liner. After joining the composite wrap to the steel barrel liner, either by mechanical or chemical procedure, a slot is formed by carving out a top and / or a bottom of the composite. A gas key insert is then placed in the made slots and retained by mechanical or chemical procedure. Finally, a gas port is drilled through the key insert.
Owner:NEWMAN CORY J
Method for improving content of vanadium pentoxide in vanadium slag
InactiveCN104726633AReduce breakageReduce magnetic separation and other processesManufacturing convertersProduction effectOxygen
The invention relates to a method for improving content of vanadium pentoxide in vanadium slag, and belongs to the technical field of metallurgy of vanadium-bearing hot metal. According to the technical scheme, the method comprises the following steps: supplying oxygen and refining vanadium by molten iron by virtue of a converter; pouring out semi-steel, leaving the vanadium slag in a vanadium refining converter, further blowing oxygen and oxidizing; and converting the V2O3 in the vanadium slag into V2O5 by controlling the oxygen blow amount and lance height. According to the scheme, the waste heat of the vanadium slag is fully utilized to oxide; the original chemical procedures of cooling the vanadium slag to a room temperature, crushing, carrying out magnetic concentration of iron and carrying out oxidative roasting in a rotary kiln are changed; the vanadium slag roasting procedure in the original vanadium chemical process is replaced; the energy consumption is greatly reduced; and the production effect of the vanadium product is improved.
Owner:HEBEI IRON AND STEEL
Sealing structure of single-stage single-suction centrifugal pump for chemical procedure
InactiveCN101122298ALower specific pressureExtend your lifePump componentsPumpsSingle stagePump chamber
The invention relates to a seal structure of a single-stage and single-suction chemical process centrifugal pump, and comprises a pump cover (1), a shaft sleeve (2), a seal chamber (3), a mechanical seal (4), a mechanical seal cover (5), and a pump chamber (6), as well as a spiral seal (7). One end of the spiral seal (7) is connected to the pump cover (1) and the seal chamber (3), while the other end of the spiral seal (7) is connected to the pump chamber (6). The beneficial effect of the invention is that the medium pressure entering the seal chamber is greatly reduced due to the pumping function of the spiral seal; thus, a general mechanical seal can be used to reduce the cost; on the other hand, the specific pressure of an end surface of the mechanical seal can be reduced, and abrasion of a friction pair is reduced, so as to prolong the usable life of the mechanical seal.
Owner:上海开利制泵有限公司
Process for electrolyzing preparing electrolyte of full vanadium ion flow battery
InactiveCN1304640CSimplify the assembly processExtended service lifeElectrolysis componentsLead-acid accumulatorsLiquid cellVanadyl sulfate
The invention relates to the field of the cell manufacturing and especially relates to a method of preparing the electrolyte of the vanadium ion liquid cell, making the 1:1 thin vitriol from the thick vitriol, adding the trioxid bi-vanadium and then the five-trioxid bi-vanadium to get the vitriol oxide vanadium; adding the Na2SO4, emulsification agent OP and other additive, placing the vitriol oxide vanadium at the cathode of the electrolytic cell and the same ion intension at the anticathode and electrolyse, getting the vitriol electrolyte used for vitriol batteries which includes half quadrivalence vanadium and half tervalent vanadium. The invention simplyfy the equipment of vitriol batteries and chemical procedure, enhance the work efficiency, extend the use time of the functional materials of vitriol batteries, such as the electrode and the dissepiment, needn't change the electrolyte of the anode, avoid wasting raw material, avail the producing by large scale.
Owner:攀枝花钢铁有限责任公司钢铁研究院 +1
Pump body heat preservation device for petrochemical process pump
InactiveCN111622988AEasy to installEasy to disassemblePump componentsPump installationsThermodynamicsElectric machinery
The invention discloses a pump body heat preservation device for a petrochemical process pump. The pump body heat preservation device comprises a fixed base, and the upper surface of the fixed base isrespectively and fixedly connected with a chemical process pump body, a pump body heat preservation box, an n-shaped support and a motor base. The pump body heat preservation box comprises a first half heat preservation box body and a second half heat preservation box body which are fixedly connected to the upper surface of the fixed base through fastening bolt, and the front of the second half heat preservation box body is fixedly connected with a positioning rod. According to the pump body heat preservation device for the petrochemical process pump, by the arrangement of the fastening boltand second fixing lugs, the first half heat preservation box body and the second half heat preservation box body can be fixed to the upper surface of the fixed base; by the arrangement of a fixed plate, a fixed threaded rod, first fixing lugs and fixing nuts, the first half heat preservation box body and the second half heat preservation box body can be convenient to disassemble and assemble; andthus the whole pump body heat preservation device has the effect of convenience in assembly and disassembly and is convenient for staff to check and repair.
Owner:ANHUI WOLONG PUMP & VALVE CO LTD
Non-segmented composite barrel for gas operated firearms
Owner:NEWMAN CORY J
Wear-resistant and corrosion-resistant chemical process pump
ActiveCN113062870AAvoid cloggingAvoid wear and tearSpecific fluid pumpsPump componentsImpellerElectric machinery
Owner:SANLIAN PUMP IND CO LTD
Chemical process pump with heat dissipation and shock absorption functions and method
PendingCN114285218AGuaranteed uptimeFacilitated releasePump componentsCooling/ventillation arrangementThermodynamicsHeat Avoidance
Owner:鲲玖泵业(无锡)有限公司
Creation of peptide-based anti-tumor agent
Owner:HOKKAIDO UNIVERSITY
Fluid synthesis preparation device for preparing magnetic/noble metal composite nanoparticle
ActiveCN110270284AReduce artificial ginsengReduce decreaseMaterial nanotechnologyChemical/physical/physico-chemical microreactorsMagnetite NanoparticlesComposite nanoparticles
The invention relates to a fluid synthesis preparation device for preparing magnetic / noble metal composite nanoparticles. Compared with the prior art, the device solves the defect that a synthesis device for preparing a magnetic / noble metal composite nano material is not available. The device comprises a Fe3O4 magnetic nanoparticle synthesis preparation component, a Fe3O4@TiO2 core-shell magnetic nanoparticle synthesis preparation component, a Fe3O4@mTiO2 magnetic nanoparticle synthesis preparation component and a Fe3O4@mTiO2 / noble metal magnetic composite nanoparticle synthesis preparation component. The invention designs the preparation device for preparing the magnetic / noble metal composite nanoparticles, together with a conventional control method based on chemical procedures, automatic preparation of a Fe3O4@mTiO2 / noble metal nano material can be achieved, manual operation on the procedures is reduced, disturbance of manual operation is avoided, and the device has the characteristics of being simple and convenient to operate, small in reagent amount and good in repeatability.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
A method for correcting deviation of backwater flow detection
ActiveCN104457918BImprove flow detection accuracyTesting/calibration apparatusVolume/mass flow by electromagnetic flowmetersAutomatic controlStream flow
The invention belongs to the detection and the correction of the flow of the industrial cyclic utilization backwater for mines, mineral separation, and chemical engineering production process. A method disclosed by the invention is mainly used for solving the problem of the reverse drifting of the flow detection values when a flow meter and an inner wall of a fluid pipeline are low in flow speed to be bonded. The invention provides the method for fast correcting and solving the problem that the reduced diameter is changed when the flow speed is low caused by the bonding of the inner wall of a water supply pipeline of the industrial backwater. The flow detection precision of the backwater production process is improved, an on-line measuring method of the wall thickness of the pipeline is provided, the wall thickness of the same cross section of the pipeline is measured by a portable thickness measuring instrument according to different acoustic wave conductivities of different media, the effective inner diameter of the backwater pipeline is calculated according to the wall thickness of each point, a fast correcting algorithm is provided for the drifting when the detection flow of the backwater is slow, the automatic control of the backwater flow can be possible under complicated conditions, and the algorithm is simple and easy to realize.
Owner:JINCHUAN GROUP LIMITED
Technology for removing proteins and heparin-like materials in sodium heparin crude extract liquid
InactiveCN107265596AStrong bridging adsorption performanceEasy to sinkPeptide preparation methodsWater/sewage treatment by flocculation/precipitationLiquid wasteMicroparticle
The invention particularly relates to a technology for removing proteins and heparin-like materials in sodium heparin crude extract liquid. The technology which is a method for recycling the proteins in sodium heparin extraction waste liquid includes adding aluminum salt solution into the sodium heparin extraction waste liquid and stirring the aluminum salt solution and the sodium heparin extraction waste liquid to obtain first solution; adding flocculating agent solution into the uniformly stirred first solution and stirring the flocculating agent solution and the first solution to obtain second solution; allowing the second solution to stand still when a large quantity of flocculated precipitates appear in the second solution; sucking off supernatant and collecting the precipitates; drying the precipitates to obtain the proteins. The technology has the advantages that polyaluminum chloride is high in bridging and adsorption performance, and physical and chemical procedures such as coagulation, adsorption and precipitation can be carried out in an accompany manner in hydrolysis procedures; the polyaluminum chloride structurally comprises morphology-changeable poly-carboxyl complex compounds, is high in flocculation and precipitation speed and wide in pH (potential of hydrogen) value application range and is free of corrosion for pipeline equipment; polyacrylamide with a high molecular weight can be 'bridged' between adsorbed particles to generate floccules and is favorable for settling the particles, low in usage and high in efficiency, and after-treatment can be facilitated.
Owner:盐城盛大肠衣食品有限公司
Creation of peptide-based Anti-tumor agent
An object of the present invention is to provide an echinomycin derivative that has anti-cancer activity equal to or greater than that of echinomycin, and a production method therefor based on a chemical procedure. Provided are an echinomycin derivative represented by formula (I), and a production method therefor based on a chemical procedure.
Owner:HOKKAIDO UNIVERSITY
Method for dissolving metallogenically primary copper metals obtained from ores and/or chalcopyrite concentrates that contain same
The present invention relates to an autocatalytic reductive chemical procedure with solid-solid interaction in conditions of supersaturation of salts, via the phenomenon of efflorescence in order to dissolve a copper metal, from a metallogenically primary ore or chalcopyrite concentrate that contains same. The method comprises two steps, referred to as “Reductive Activation Step” and “Dry Autocatalytic Reductive Transformation Step” or efflorescence, which can be repeated as many times as necessary to maximise the extraction of copper or base metal of interest. The invention can also be used for sulphurised base metals such as nickel, zinc, cobalt, lead and molybdenum, among others, regardless of the common impurities of sulphurised ores, as occurs with the presence of arsenic.
Owner:NOVA MINERALIS SA
Chemical process intelligent pump and control method thereof
ActiveCN101994704BWill not complicateImprove energy efficiencyChemical industryPump controlEngineeringPower performance
The invention discloses a control method of a chemical process intelligent pump, which belongs to a pump control technology, a technological process device for realizing energy conservation of a chemical process pump in the prior art is complicated, and the control method comprises the following steps: writing startup rotational speed N0, writing a flow rate-power performance chart of energy conservation and setting target flow rate Q0 through an initialization module; leading the pump to be started up according to the startup rotational speed N0 and measuring actual power P when the pump operates at a certain rotational speed N1 by a power measuring module; using a control module to compare the measured actual power P with the flow rate-power performance chart to obtain actual flow rate Q when the pump operates at the rotational speed N1, and calculate through a formula that Q0 / Q equals N / N1 to obtain rotational speed N when the pump achieves the target flow rate Q0; and using an output module to output the rotational speed N when achieving the target flow rate Q0 to a motor for driving the pump. The control method does not need to increase any sensing device in the technologicalprocess device and can carry out self-parameter detection and operation control on the pump to achieve the desired operation parameters of the pump, thereby improving the energy efficiency and being conductive to transformation of the existing device.
Owner:ZHEJIANG JIALI TECH
Chemical process pump with ultralow vibration value
PendingCN113931883AImprove operational reliabilityShorten maintenance cyclePump componentsPumpsImpellerChemical procedure
The invention discloses a chemical process pump with an ultralow vibration value, and belongs to the technical field of chemical process pumps. The chemical process pump comprises a pump body, a pump cover, a bearing body, a pump shaft and an impeller, supporting arms on the two sides of the pump body are designed in an inclined-pull slope shape, and the stability of the center of the pump is improved; the pump cover adopts a forging process, an ultra-large water cooling cavity is used, and a sealing threaded hole is formed in a water cooling cavity cover; and the bearing body adopts a forging process and a cylindrical structure, so that the rigidity and the flexibility of the bearing body are ensured. The chemical process pump has the advantages of high operation reliability, long maintenance period, low accessory replacement rate and long service life, and completely meets the GB / T29531A vibration standard.
Owner:李艳杰
A rolling optimization method for bisphenol A crystallization process based on system operation mode
ActiveCN108375908BGood effectImprove product qualityAdaptive controlStatistical analysisData acquisition
Owner:JIANGNAN UNIV
Chemical procedure modelling approach possessing reconstructed operation RNA genetic algorithm
InactiveCN101339628BImprove the disadvantages of premature convergenceIncrease diversityGenetic modelsAlgorithmGenetics algorithms
Owner:ZHEJIANG UNIV
Method for synthesizing fatty acid methyl ester
InactiveCN101195572BLow costHigh energy consumptionFatty acid esterificationPreparation by ester-hydroxy reactionChemical reactionHydrolysis
The invention discloses a method for synthesizing fatty acid methyl ester , which belongs to process and technique field of ester material through chemical modification, the procedures of the method comprises that fat raw material is filtered to remove impurity and heated to 160 DEG C in the preheater and is pressurized to 1-4 Mpa after dehydrating in the continuous vacuum flash evaporation dehydrator under the pressure of -0.09 Mpa and is heated to 110-240 DEG C by preheater and enters in the esterifying reaction tower from the top continuously. The raw material carbinol is pressurized to 1-4 Mpa by water pump and is heated to 110-240 DEG C after vaporizing, and then enters in the esterifying tower through gas distributor from the bottom of the esterifying reaction tower. The fat raw material from top to bottom and carbinol gas from bottom to top are in countercurrent contact to generate chemical reaction and chemical procedures as hydrolysis, esterification and ester exchange and stripping, adsorption, rectification and the like to produce product acted by high temperature and pressure. Compared with the prior art, the invention is low in raw material cost, little in equipment corrosion and small in carbinol consumption.
Owner:SICHUAN GUSHAN VEGETABLE FAT CHEM CO LTD
Method for increasing calculation speed of chemical process simulation software based on CUDA
PendingCN112084650AReduce usageImprove operational efficiencyResource allocationDesign optimisation/simulationConcurrent computationSimulation
The invention relates to a method for increasing the calculation speed of chemical process simulation software based on CUDA. The invention aims to provide the method for increasing the calculation speed of chemical process simulation software based on CUDA. According to the technical scheme, an operand of chemical process simulation software depends on the scale and complexity of simulation engineering, the larger the scale of the simulation engineering is, the higher the complexity is, the larger the calculation dimension is, and the larger the dimension is, the higher the efficiency of theGPU is in parallel calculation of large-scale data by using the advantage of GPU calculation of CUDA. The invention is suitable for the field of chemical process simulation.
Owner:杭州百子尖科技股份有限公司
Leakage-free chemical process pump with anti-blocking structure
PendingCN114673693AEasy to disassemble and cleanGuaranteed service lifePump componentsPumpsEngineeringMechanical engineering
The leakage-free chemical process pump with the anti-blocking structure comprises a chemical process pump body, a pump feeding cylinder is arranged on the side face of the chemical process pump body, a first semi-arc sliding groove is formed in the inner side of the pump feeding cylinder, a semi-arc groove is formed in the side face of the pump feeding cylinder, and a semi-arc fixing base is connected to the semi-arc groove in an inserted mode; a filter screen is arranged on the first semi-arc sliding groove, and a moving assembly facilitating automatic adjustment of the filter screen is arranged in the pump feeding cylinder. The two filter screens are additionally arranged on the pump feeding cylinder, impurities carried in petroleum are prevented from entering the chemical process pump, meanwhile, the filter screens are convenient to disassemble, assemble and clean through the moving assembly, the service life of the filter screens is guaranteed, the sealing performance of the pump feeding cylinder is guaranteed during installation through cooperation of the touch assembly and the sealing limiting assembly, and the service life of the pump feeding cylinder is prolonged. Normal work of the chemical process pump is prevented from being affected by leakage, and therefore the using effect of the chemical process pump is improved.
Owner:JIANGSU DEERJIA MACHINERY MFG CO LTD
Debugging platform for chemical process
PendingCN114063585ARealize deliveryImplement debuggingProgramme total factory controlWater storage tankControl signal
The invention relates to a debugging platform for a chemical process, and belongs to the technical field of fluid conveying control. The platform comprises an air compressor, a water storage tank, pumps, a heat exchanger and a control system, the air compressor and the water storage tank form air communication and are provided with an air flow regulating valve and a bypass air pressure regulating valve, the pumps comprise at least three pumps which are connected in parallel and are connected with a first water flow bypass pipe in parallel, and the water storage tank and the pumps form liquid flow communication; the pumps and heat exchanger form liquid communication and have a bypass pressure regulating valve and a water flow regulating valve. The water storage tank is connected with tap water through a water inlet pipe, a second water flow bypass pipe is arranged between the water outlet of the pumps and the water storage tank, and the water flow regulating valve is connected with a third water flow bypass pipe in parallel. A water flow regulating valve and a back pressure valve are sequentially connected in series from the outlet of the heat exchanger to a tail end water outlet, and are respectively connected in parallel with a fourth water flow bypass pipe and a fifth water flow bypass pipe; and the air compressor, the heater of the water storage tank, the pumps, the heat exchanger and various valves are in control signal connection with the control system. Through the platform, the most reasonable fluid conveying form under different power sources for engineering application can be verified and found.
Owner:AEROSUN CORP
Refrigerator and its defrosting control method and device
ActiveCN111486646BAvoid the risk of spontaneous combustion accidentsGuaranteed complete defrostingLighting and heating apparatusDomestic refrigeratorsChemical controlIcebox
The present invention provides a refrigerator and a defrosting control method and device thereof. The method includes: when the defrosting control program is executed, acquiring the defrosting temperature; determining that the defrosting temperature does not reach a preset exit temperature, and acquiring the compartment temperature ; Determine the defrost control parameters corresponding to the defrost control program according to the defrost temperature and the compartment temperature; execute the defrost control program according to the control parameters, and obtain the corresponding real-time defrost temperature when the defrost control program is executed each time; determine the real-time defrost control program When the defrost temperature reaches the preset exit temperature, the defrost program is exited to complete the defrost. The defrosting control method of the present invention can select a corresponding defrosting scheme according to the defrosting temperature and the compartment temperature when a single defrosting is incomplete in the refrigerator, so as to ensure the complete defrosting of the evaporator and avoid the occurrence of multiple incomplete defrosting. , causing the heater to work for a long time, the tank and the air duct will be yellowed, deformed, and even cause the risk of safety accidents.
Owner:HEFEI HUALING CO LTD +2
Oxygen content adjusting method and device for chemical process gas and electronic equipment
PendingCN114019103ADynamic control is effectiveMaterial analysisPhysical chemistryProcess engineering
The invention discloses an oxygen content adjusting method and device for chemical process gas and electronic equipment. The method comprises the steps that sampling gas is obtained, and the current oxygen content of the chemical gas is calculated based on the sampling gas; the current oxygen content is continuously calculated within the preset detection duration, and the change trend of the current oxygen content is determined; and an oxygen content interval corresponding to the current oxygen content is determined, an inert gas input rate change curve within a preset adjustment duration is calculated based on the oxygen content interval and the change trend, and the real-time input rate of the inert gas is dynamically controlled and adjusted according to the inert gas input rate change curve. According to the method, the change trend of the current oxygen content is judged, and the inert gas input rate change curve is calculated to dynamically control and adjust the real-time input rate of the inert gas, so that the oxygen content in the gas generated in the chemical process can be effectively and dynamically controlled, and the oxygen content can be more easily kept in a safe oxygen content range.
Owner:ZHEJIANG BUSINESS TECH INST
A chemical process pump with adjustable bearing glands
ActiveCN112324697BAdjust rotationImprove stabilityPump componentsPumpsEngineeringMechanical engineering
The invention discloses a chemical process pump with an adjustable bearing cover, which includes a process pump body, a bearing cover and a bearing, the second buffer layer includes an air flow pipe, a main channel and a side flow channel, and the air flow pipe has a A plurality of main channels are also communicated, and side channels are also provided on the side of the main channel, and the two ends of the side channels are respectively connected with the main channel and the air flow pipe, and the main channel and the side channels are also provided with There are one-way valves; there are multiple main channels and side channels on the airflow pipe, so when the deviation movement of the bearing squeezes a certain main channel, the gas in the airflow pipe will flow, so the gas in the airflow tube will flow, so the gas from the two sides of the main channel will be removed. In addition to the ability of the gas flowing out of the side channel on the side to resist radial runout, the gas flowing out of the side channel at other positions also has a certain ability to resist bearing offset, so this design can adjust the rotation of the bearing more smoothly. Improve the stability of the process pump operation.
Owner:ZHEJIANG OCEAN UNIV
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