52results about How to "Generation of effective control" patented technology

The invention relates to the field of sludge treatment, in particular to an oil-base mud treatment process which includes the steps: a, pretreatment: sorting, tempering and initial separation; b, pyrolysis and desorption; c, condensation and oil-water separation; d, utilization of combustible gas; e, flue-gas treatment. The treatment process adopts an internal and external heating pyrolysis and desorption method and is high in heat effectiveness and complete in treatment effect, a pyrolysis gas heat value is sufficiently utilized in the process, oil and conditioners in oil mud without mechanically separating are thoroughly removed, decomposed macromolecular organic compounds are reserved in an inorganic carbon manner, and final products have wide reuse pathways.

A horizontal cooling silo comprises a cooling fan, a silo, a material conveying bed and a spiral conveyer for discharged materials, wherein the cooling fan is arranged above the rear part of the silo; the suction opening of the cooling fan is connected with the silo; a feed opening is arranged on the front part of the silo; the material conveying bed is arranged below the silo and is provided with a conveying scraper chain assembly; the materials flow from the front part of the silo to the rear part of the silo on the material conveying bed; and the spiral conveyer for discharged materials is arranged below the tail end of the material conveying bed. The cooling silo integrates storage and cooling, has better cooling effect especially on the fibrous materials and has simple structure and low cost.

The invention provides a method for preparing L-aspartic acid and L-alanine by using maleic anhydride. The method comprises the following steps: heating the maleic anhydride as the raw material to obtain a maleic acid solution through hydration reaction; adding maleate isomerase and L-aspartase; after filtering and concentrating obtained liquid of enzymatic reaction to deaminize, regulating the pH value until the isoelectric point of the L-aspartic acid is equal to 2.8 by using the maleic acid solution as an acidifying agent; crystallizing to separate out the L-aspartic acid; and converting the L-aspartic acid into the L-alanine by further using aspartate decarboxylase. The L-aspartic acid is prepared through one-step reaction by a two-enzyme method, the process is simple and convenient, the conversion ratio is high, production of malic acid as a by-product can be controlled effectively, and the quality of the product is good; and maleic acid is used as the acidifying agent to prepare the L-aspartic acid in an isoelectric point crystallization manner, crystallization mother liquor can be used as an enzyme reaction substrate and then is recycled, the discharge amount of waste water is greatly reduced, and the method conforms to the idea of environmental protection. In addition, the L-aspartic acid is further converted into the L-alanine by an enzymic method, so that products obtained by a whole process are diversified; and the market competitiveness is high.

The invention discloses a new necessary MgCON1 gene and utility generated by pear spore bacterium, which is characterized by the following: the gene and its cDNA and coding product possess the sequence in the SEQ ID No.:1, No.:2 and No.:3; the protein of coded gene possesses homeo structural region, which is not similar to known functional protein; the gene removes abnormal and matured attaching cell, which reduces forming frequency of infecting tin and extending infecting hypha without pathogenic ability for rice; the MgCON1 can be important candidate target, which can be applied to design and sieve new drug to prevent fungus.

The invention belongs to the technical field of hydrometallurgy and chemical production, and discloses a method for treating waste secondary batteries. By burning in two stages in a rotary kiln, the furnace temperature is first maintained at 100-150°C, and the waste secondary batteries are The front part of the furnace is roasted for 30-60 minutes to ensure that the sealing ring of the waste secondary battery is fully pyrolyzed and destroyed, so that the hydrogen and organic solvent in the battery can be released; Maintain at 300~500°C to fully oxidize, pyrolyze, and burn the organic matter in the waste, and effectively control the generation of odor and nitrogen oxides, so that the generated gas can achieve the effect of no peculiar smell, no foul smell, and complete combustion. The treatment method provided by the invention has a reasonable design, is incinerated first and then crushed, has a high crushing rate, a high recovery rate of valuable elements, can avoid high-temperature incineration and explosion accidents, is safe and pollution-free, and is suitable for popularization.

The invention belongs to the technical field of peanut food additive and peanut beverage processing, and provides a composite emulsifying agent for peanut milk, which is formed by mixing isolated soybean protein, fatty acid monoglyceride, sucrose fatty acid ester, sorbitan fatty acid ester and sodium alga acid in a mass ratio of 1: 1: 1: 1: 1, wherein the mass percentage concentration of the composite emulsifying agent in the peanut milk is 0.05 to 0.15 percent. The invention also provides a method for preparing the peanut milk by adopting the emulsifying agent. The method comprises the following steps: low-temperature cold pressing, soaking, filtering and mixing, grinding, centrifugal separation, emulsifying agent addition, homogenizing, super-high temperature instant sterilization, canning and sealing, and high-temperature sterilization. The fat in the peanut milk prepared by adopting the composite emulsifying agent can be fully emulsified and dispersed, so the generation of a fat ring can be effectively controlled; and meanwhile the shelf life of the peanut milk can be prolonged, and adverse phenomena such as settling, elutriation, demixing and the like of the peanut milk during storage and transportation are prevented.

The invention provides a preparation method of a sitagliptin impurity compound, belonging to the field of chemical pharmacy. According to the method, racemic and / or chiral sitagliptin is taken as a substrate, reductive amination is performed firstly, and then Cpe elimination is performed, so the sitagliptin impurity compound is obtained; and the starting material is easy to obtain, operation is simple, generation of double-bond isomeric impurities in a reaction process can be effectively controlled, and purification is convenient. The method is rigorous, practical, scientific and reliable in operation, the required materials are easy to store and free of harm, the product is easy to purify, the yield and the purity of the product are high, the preparation requirements of the impurity can be met, a new thought is provided for synthesis of the sitagliptin impurity (XGT062-05), and the method has important significance in research of the sitagliptin impurity.

The invention discloses a system for recycling batteries. The system comprises a combustion chamber of a rotary kiln, a secondary combustion chamber and flue gas purification equipment; the combustion chamber of the rotary kiln comprises a first combustion area and a second combustion area; the secondary combustion chamber is communicated with the combustion chamber of the rotary kiln; the flue gas purification equipment is communicated with the secondary combustion chamber. By the aid of the system for recycling the batteries, the batteries are combusted in the first combustion area at the temperature ranging from 100 DEG C to 150 DEG C for 30 to 60 minutes, so that sealing rings of the batteries are sufficiently damaged by means of pyrolysis, hydrogen and organic solvents in the batteries are released and are discharged by negative-pressure devices, and the batteries can be effectively prevented from being exploded at a high temperature; then the batteries are combusted in the secondary combustion area at the temperature ranging from 300 DEG C to 500 DEG C, first flue gas generated when the batteries are combusted is completely combusted in the secondary combustion chamber at the temperature ranging from 1200 DEG C to 1350 DEG C to form second flue gas, the second flue gas is purified by the flue gas purification equipment to form purified gas, and the purified gas is exhausted into the atmosphere. The system for recycling the batteries has the advantages that the batteries are prevented from being exploded, and the system is safe in operation. The invention further provides a method for recycling the batteries.

The invention provides a preparation method of poly (butylene succinate) (PBS) with low cyclic byproducts, which comprises the following steps: adding titanate, succinic acid and 1, 4-butanediol into a reaction kettle for esterification reaction; and adding a solid-loaded tin catalyst and an auxiliary agent crown ether into the reaction kettle, carrying out condensation polymerization to obtain a polymer melt, and granulating to obtain the poly (butylene succinate) polymer. The content of PBS cyclic by-products is less than or equal to 1wt%, and the PBS has excellent mechanical properties.

The invention discloses a biofouling cleanser and an application thereof and belongs to the field of chemical descaling. The biofouling cleanser includes the following components, by mass, 4-8% of hydrochloric acid, 0.5-1% of hydrofluoric acid, 0.8-1.2% of a compound of methyl pentynol and Mannich base, 2.5-3.5% of ferric chloride, 0.8-1.2% of 2-iodacyl benzoic acid, 0.5-1.2% of heptadecenyl imidazoline quaternary ammonium salt, 0.3-0.6% of hydroxyphosphonoacetic acid, and the balanced being water. The biofouling cleanser has excellent descaling effects and controls the overflow concentration of H2S to be less than 0.2 mg / m<3> without aggravation on oxidizing corrosion and generation of heavy metal pollution. The biofouling cleanser is safe and environment-friendly and is beneficial to safety production in oil fields.

The invention provides a dry filter and dust removal system for roadway excavation working face, in which the draw-out fan (5) and the dry filter dust collector (4) are fixedly installed on the bracket (7), and the bracket (7) is nested on the belt conveyor (10) above and installed on the mobile frame (8); the draw-out fan (5) is connected to the dry filter dust collector (4), the negative pressure air cylinder (3), and the dust suction cover (2); the negative pressure air cylinder (3) hang on the top of the tunnel (1) by a monorail crane (9); the dust suction cover (2) is supported on the rocker arm (13) at the rear end of the cutting head (14) in an encircling manner. The dust removal system has high dust removal efficiency, does not occupy a separate mobile power, and can be coordinated with the tunneling process.

The invention relates to the technical field of organic waste gas treatment, in particular to a method for using thermal plasma to heat treat organic waste gas. It includes the following steps: gas pretreatment and purification, molecular sieve adsorption and desorption, gas ultra-high temperature cracking and combustion, and tail gas treatment. The thermal plasma pyrolysis equipment provided by the present invention has a high temperature in the combustion working area, a heating block, and a more thorough exhaust gas cracking and combustion effect; when the thermal plasma pyrolysis equipment is working, it does not need external air to supplement the air for combustion, which greatly reduces the gas intake and The tail gas treatment capacity greatly reduces the cost of use; the core area of ​​the thermal plasma pyrolysis equipment can be fed with protective gas as needed, and the protective gas can realize high-temperature anaerobic pyrolysis of organic waste gas, thereby effectively controlling the generation of nitrogen oxides, and can Completely avoid the risk of explosion.

The invention discloses a maintenance method for prolonging a time interval of opening maintenance of an etching cavity. The polymer accumulated in the cavity is removed under the closed state of the etching cavity. The method comprises the following steps: utilizing low-pressure high-flow high-power gas and high-pressure low-flow high-power isotropous plasma etching to respectively remove the polymers from the lower part and inner corner of the cavity, and then discharging the suspending grains generated by etching reaction from the cavity by pumping the high-flow gas and under the effect of the subsequent pumping. The plasma cleaning technology is periodically applied to the cavity; the lower level of the accumulation volume of the polymers in the etching cavity can be guaranteed; the generation of the grains can be effectively controlled; the product defects generated by the grain production can be reduced; the time interval of the opening maintenance can be obviously prolonged; the purposes of further increasing the production capacity and lowering the manufacturing cost are achieved.

The invention discloses an electric furnace slag water purifying device. Wherein, the electric furnace slag water purifying device includes a main casing, a crushing cooling unit, a heat exchange unit and a dehydration unit, and has a compact, simple and reliable structure. Among them, the main shell has a water cavity and a main feed port below the liquid level. The crushing and cooling unit crushes and cools the liquid steel slag from the main feed port. Since the crushing and cooling process is below the liquid level, the water vapor can be effectively controlled In addition, the heat exchange unit controls the water temperature of the water cavity to further control the generation of steam; the dehydration unit dehydrates the water quenched slag deposited at the bottom of the water cavity to obtain dehydrated finished steel slag. Thus, the generation of water vapor can be effectively reduced, thereby achieving the goal of water saving and emission reduction.

The invention provides a new gene MgCON1 necessary for the production of pyrosporium conidia and its use. The gene and its cDNA, encoded protein and promoter respectively have the nucleotide or amino acid sequences of SEQ ID No.: 1, No.: 2, No.: 3 and No.: 4 in the sequence table. The encoded product of this gene has a C2H2 zinc finger domain, is localized in the nucleus, and is specifically expressed in conidiophores, conidiophores, and appresses; its knockout results in complete inability to produce conidia in Pyrosporium and loss of ability to infect rice leaves. The expression of MgCON1, the cleavage of transcripts and the expression, modification and localization of the encoded protein, as well as the signaling pathways involved in the gene can be used as important candidate targets for the design and screening of new antifungal agents.

The invention relates to the technical field of concrete, and provides a compound concrete and a preparation method thereof, wherein the compound concrete is high in strength, good in crack-resisting effect, excellent in anti-bending performance, strong in freezing resistance, resistant to corrosion and low in cost. The compound concrete comprises the following raw materials in parts by weight: 70 to 80 parts of water, 150 to 160 parts of cement, 490 to 500 parts of recycled coarse aggregate with the particle diameter between 5 and 40mm, 180 to 190 parts of recycled fine aggregate with the particle diameter between 0.15 and 4.75mm, 65 to 75 parts of stone slurry powder, 1 to 3 parts of fluidizer, 5 to 15 parts of water glass and 3 to 7 parts of ethylene polypropylene monofilament fibers. The preparation method comprises the following steps: (1) preparing the recycled coarse aggregate and the recycled fine aggregate; (2) preparing the stone slurry powder; and (3) stirring the mixed raw materials.

The invention belongs to the field of veterinary drugs, and discloses a medicine composition used for controlling poultry airsacculitis. The composition is composed of the components of, by weight: 10-20% of aesculetin, 10-20% of deoxycycline, 10-20% of colistine sulfate, 2-5% of levamisole, 10-30% of vitamin C, 0.01-0.015% of dexamethasone, and balance of auxiliary materials. The invention also provides a preparation method of the medicine composition. The medicine composition provided by the invention has high effect against poultry airsacculitis, wherein an effective rate can be higher than 95%. The medicine composition is also advantaged in fast effect. In a first day of medication, a substantial effect can be provided, and the disease can be cured in 4 days. Also, the medicine composition has a wide antimicrobial spectrum. The medicine composition has excellent killing effects against poultry airsacculitis pathogens such as Escherichia coli, mycoplasma, pseudomonas aeruginosa, and the like. The medicine composition can effectively control secondary bacterial infections. Further, the medicine composition provided by the invention is advantaged in simple production method and convenient application. The production method is labor-saving.