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31results about How to "Guaranteed degradation" patented technology

Dimethylamine waste gas treatment device and process in synthetic leather industry

The invention discloses a dimethylamine waste gas treatment device and process in synthetic leather industry. The dimethylamine waste gas treatment device comprises a primary capture tower, a secondary capture tower, a dry filter, a photoelectric integral purifier and a nanometer absorption tower, wherein an air outlet of the primary capture tower is connected with an air inlet of the secondary capture tower through a pipeline; an air outlet of the secondary capture tower is connected with an air inlet of the dry filter through a pipeline; an air outlet of the dry filter is connected with an air inlet of the photoelectric integral purifier; an air outlet of the photoelectric integral purifier is connected with an air inlet of the nanometer absorption tower through a pipeline. A discharginghigh-voltage electrode is arranged in a plasma reaction section; the discharging high-voltage electrode is of a stainless steel mace structure. Compared with the prior art with the defects that the pretreatment efficiency is low, so that spark discharge is generated in the plasma discharging process, and meanwhile, the oil mist influences the discharging process efficiency, the dimethylamine waste gas treatment device and process have the advantages that after the two-stage capture towers are added, the plasma discharging efficiency is improved; sufficient high-energy active substances are generated; further, the dimethylamine degradation is ensured.
Owner:HANGZHOU DIANZI UNIV +1

Manufacturing method of urban energy-saving and environmental-friendly cultivation medium

The invention relates to a manufacturing method of an urban energy-saving and environmental-friendly cultivation medium, which comprises the following implementation steps: in the first phase of an addition reaction, urea and formaldehyde are allowed to perform a hydroxymethylation reaction in a medium with a neutral or slightly alkaline pH of 7-8 to obtain monomethylol urea and dimethylol urea; further reaction is performed to obtain trimethylol urea and tetramethylol urea when the molar ratio of formaldehyde and urea (F / U) is higher; in the second phase of a polycondensation reaction, various methylol ureas are allowed to perform condensation in a weak acid condition with a pH of 4-6 to obtain a hydrophilic resin, wherein in the molecular structure, the hydroxymethyl group and the hydrogen connected to the nitrogen have a polycondensation capability; with the progress of the above reaction, the molecular weight increases gradually, and the molecular state becomes more complex, and even a network structure is formed, so the resin becomes an elastomer with a stereo configuration. The invention uses urea formaldehyde foam plastics as a novel plant cultivation medium to substitute soil, is environmental-friendly and can effectively save resources.
Owner:天津市津鸥化肥有限责任公司

Recombinant spider silk protein and application thereof

The invention provides a recombinant spider silk protein. The sequence structure comprises at least two spider silk protein structural domain monomers and at least one protease enzyme digestion site;each protease enzyme digestion site is positioned between every two adjacent spider silk protein structural domain monomers. By inserting each protease enzyme digestion site between every two adjacentspider silk protein domain monomers, when the recombinant spider silk protein is used in vitro, the recombinant spider silk protein can be combined with a tool enzyme to control the enzymolysis of the recombinant spider silk protein. Compared with existing spider silk proteins which need to be slowly degraded for a long time under the assistance of microorganisms, the recombinant spider silk protein has the advantage of controllable degradation; when the recombinant spider silk protein is used in the human body, since the protease enzyme digestion sites on the recombinant spider silk proteincan be enzymatically hydrolyzed by enzymes in the human body, a biological material prepared from the recombinant spider silk protein can be slowly degraded in the human body, so that the applicationvalue of the recombinant spider silk protein is increased, and the application is wider.
Owner:SUZHOU BAIYUAN GENT CO LTD

Crop slow-release fertilizer prepared by using edible fungus residue

The invention discloses a crop slow-release fertilizer prepared by using edible fungus residue, and relates to the field of crop fertilizers. The crop slow-release fertilizer comprises a slow-releasefertilizer matrix, a slow-release fertilizer coating film and a binder, wherein the slow-release fertilizer matrix comprises the following raw materials in parts by weight: 200-300 parts of bauxite-modified edible fungus residue, 120-180 parts of urea, 70-100 parts of potassium dihydrogen phosphate, 35-55 parts of ammonium chloride, 15-35 parts of ammonium sulfate, 8-16 parts of magnesium aluminosilicate, 40-80 parts of an amino acid compounding agent, 20-45 parts of potassium sulfate, 5-9 parts of ferric chloride, 30-50 parts of soybean meal and 3-7 parts of fulvic acid; and the slow-releasefertilizer coating film comprises the following raw materials in parts by weight: 50-80 parts of polylactic acid, 30-40 parts of starch, 30-50 parts of bamboo fiber compounded polyhydroxybutyrate, 25-30 parts of polypropylene and 6-8 parts of propylene glycol monomethyl ether acetate. The prepared slow-release fertilizer has abundant nutrition and slow release rate, and the slow-release fertilizercoating film can be easily degraded and do not pollute the lands.
Owner:安徽省舒城久富田经济发展有限责任公司

A system and method for resourceful treatment of high-salt organic wastewater

A system and method for resourceful treatment of high-salt organic wastewater, the system includes five units of raw water concentration, atomization pyrolysis, sodium sulfate purification, hydrochloric acid recovery and tail gas treatment. The raw water concentration unit concentrates the high-salt organic wastewater; the atomization pyrolysis unit adds an acidifying agent to the concentrated solution for acidification, and at the same time adds an oxidant, then atomizes and pyrolyzes the organic matter in the water to completely oxidize and remove, and separates to obtain hydrogen chloride gas and sodium sulfate. Mixed salt; the sodium sulfate purification unit dissolves, removes impurities, evaporates and crystallizes the separated sodium sulfate mixed salt, and the sodium sulfate is purified through recrystallization; the hydrochloric acid recovery unit filters and condenses the separated hydrogen chloride gas to recover hydrochloric acid; tail gas The processing unit deacidifies and purifies the remaining tail gas of the hydrochloric acid recovery unit. The system and method can realize high-efficiency removal of organic matter in high-salt wastewater, and recover hydrochloric acid and sodium sulfate crystalline salt at the same time; realize resourceful treatment of high-salt organic wastewater, and have good application prospects.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

System and method for resourceful treatment of high-salt organic wastewater

The invention discloses a system and a method for resourceful treatment of high-salt organic wastewater. The system comprises five units, namely a raw water concentration unit, an atomization pyrolysis unit, a sodium sulfate purification unit, a hydrochloric acid recovery unit and a tail gas treatment unit. The raw water concentration unit is used for concentrating the high-salt organic wastewater; the atomization pyrolysis unit is used for adding an acidifying agent into the concentrated solution for acidifying, adding an oxidizing agent at the same time, thoroughly oxidizing and removing organic matters in water through atomization pyrolysis, and separating to obtain hydrogen chloride gas and sodium sulfate mixed salt; the sodium sulfate purification unit is used for dissolving the separated sodium sulfate mixed salt, removing impurities, evaporating and crystallizing, and purifying sodium sulfate through recrystallization; the hydrochloric acid recovery unit is used for filtering and condensing the separated hydrogen chloride gas and recovering hydrochloric acid; and the tail gas treatment unit is used for deacidifying and purifying residual tail gas of the hydrochloric acid recovery unit. According to the system and the method, organic matters in the high-salinity wastewater can be efficiently removed, and hydrochloric acid and sodium sulfate crystalline salt can be recycled; the resourceful treatment of the high-salt organic wastewater is realized, and the method has a relatively good application prospect.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Fixing part for bottom of paper-plastic product and preparation method of fixing part

The invention discloses a fixing part for the bottom of a paper-plastic product and a preparation method of the fixing part. The fixing part comprises a fixing base, two lower side baffles are installed on the fixing base, a screw rod is installed on one lower side baffle, a guide rod is installed on the other lower side baffle, two upper side baffles are arranged above the two lower side baffles,the screw rod is in threaded connection with one upper side baffle, and the guide rod is in sliding connection with the other upper side baffle. According to the fixing part, through the arrangementof the screw rod and the guide rod, the distance between the upper side baffles and the lower side baffles can be adjusted, the fixing part can be installed at the corner position of the bottom of thepaper-plastic product, fixing of the corner positions of the paper-plastic product at different heights is achieved, and the paper-plastic product is effectively prevented from deforming in the usingprocess; and when the fixing part is degraded, no pollution component is generated, safety and environmental protection are achieved, meanwhile, the degradation rate is high, and the 25-day degradation rate of the fixing part for the bottom of the paper-plastic product is 99% to 99.5% through GB/T 20197-2006 measurement.
Owner:东莞市创新新材料开发有限公司

Special long-acting slow release composite fertilizer for cotton

The invention discloses a special long-acting slow release composite fertilizer for cotton, and relates to the field of a composite fertilizer. The composite fertilizer is prepared from a composite fertilizer nutrient and a slow release coating film, wherein the composite fertilizer nutrient is prepared from the following raw materials in parts by weight: 100 to 160 parts of bauxite modified edible fungus dregs, 80 to 100 parts of manure organic fertilizers, 40 to 60 parts of urea, 35 to 55 parts of monocalcium phosphate, 20 to 35 parts of ammonium phosphate, 10 to 15 parts of molybdenum trisulfate, 16 to 22 parts of potassium chloride, 13 to 18 parts of copper sulfate, 22 to 28 parts of ammonium chloride, 6 to 10 parts of potassium sulphate, 16 to 20 parts of sodium nitrate and 28 to 36 parts of crop straws; the slow release coating film is prepared from the following raw materials in parts by weight: 60 to 80 parts of polylactic acid, 30 to 40 parts of starch, 25 to 45 parts of bamboo fiber composite polyhydroxybutyrate, 30 to 40 parts of polyvinyl alcohol, 10 to 15 parts of hydroxymethyl propyl cellulose and 5 to 6 parts of propylene glycol methyl ether acetate; the composite fertilizer contains organic fertilizers and inorganic fertilizers; meanwhile, the release speed of the composite fertilizer is low; the fertilizer waste and the excessive development of the cotton rootsystem cannot be caused; the slow release film has degradation performance; the pollution cannot be caused on the land.
Owner:安徽省舒城久富田经济发展有限责任公司

Catalytic combustion treatment method for chlorine-containing organic waste gas

The invention discloses a catalytic combustion treatment method for chlorine-containing organic waste gas, and solves the problems of incomplete oxidation, catalyst poisoning, generation of high-toxicity byproducts, high cost and the like in the catalytic combustion treatment of the chlorine-containing organic waste gas. The chlorine-containing organic waste gas is treated and then introduced into an activated carbon adsorption bed for adsorption, and the activated carbon adsorption bed is switched after adsorption saturation; after being heated by a heater, air is fed into a saturated activated carbon adsorption bed to be subjected to desorption treatment, and gas led out after desorption treatment is heated and then is fed into a catalytic combustion reactor to be subjected to a catalytic combustion reaction; wherein the catalytic combustion reactor is filled with a catalyst A, a barrier medium and a catalyst B; the catalyst A is a catalyst for catalytic combustion of chlorine-containing VOCs; the catalyst B is an HCl oxidation catalyst. The method disclosed by the invention is simple, high in conversion rate and Cl2 selectivity, low in equipment investment and operation cost, long in service life of the catalyst and equipment and capable of recycling byproducts.
Owner:WUHUAN ENG
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