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154results about How to "Ease of conditions" patented technology

Process for treating wastewater generated in solar silicon wafer production process

The invention discloses a process for treating wastewater generated in a solar silicon wafer production process and relates to wastewater treatment in the field of the electronic semiconductor industry. The process comprises the following steps of: pretreating wastewater in a preliminary sedimentation tank; carrying out Fenton and iron-carbon micro-electrolysis combined oxidization reaction on the wastewater in an iron-carbon micro-electrolysis reactor; after the reaction, feeding the wastewater into a coagulation-sedimentation integrated pool, feeding PAC (Poly Aluminium Chloride) and PAM (Poly Acryl Amide) to arouse the coagu-flocculation reaction of the wastewater, and after the reaction, performing sludge-water separation on the wastewater; causing the supernate to flow to a hydrolysis acidification pool, and then causing the wastewater to flow to a contact oxidation tank; causing the mixed liquid to flow to a secondary sedimentation tank for sludge-water separation, while causing the supernate to flow to a deflection sedimentation pool, and feeding PAC for purifying water so that the supernate is up to the stand and can be discharged after sedimentation; finally, performing concentration treatment on sludge. After non-degradable organic wastewater is treated by the process provided by the invention, the BOD5 (Biological Oxygen Demand) / CODcr (Chemical Oxygen Demand) ratio of the wastewater is obviously increased.
Owner:ANHUI GREEN TITAN ENVIRONMENTAL TECH

Method for preparing silk-fibroin-based water-absorbing material by grafting vinyl monomer

ActiveCN105924596AImprove the efficiency of graft copolymerization reactionHigh graft copolymerization efficiencyFermentationN-HydroxysuccinimideCarboxylic acid
The invention discloses a method for preparing a silk-fibroin-based water-absorbing material by grafting a vinyl monomer. Vinyl-containing carboxylic acid is grafted on the silk fibroin surface by the aid of EDC/NHS (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide/N-hydroxysuccinimide), acrylamide (AM) and acrylic acid (AA) monomers are added, and a horseradish peroxidase/oxydol/acetylacetonate system is utilized to catalyze the silk fibroin-vinyl monomer graft copolymerization, thereby preparing the silk-fibroin-based water-absorbing material by a bioenzyme process. The method comprises the following steps: (1) preparing a silk fibroin solution; (2) grafting vinyl onto the silk fibroin surface by an EDC/NHS process; (3) catalyzing the silk fibroin-AM-AA graft copolymerization by using the horseradish peroxidase; and (4) forming the silk-fibroin-based water-absorbing material. Compared with the traditional process, the method has the advantages of high graft copolymerization efficiency and mild enzyme treatment conditions. The silk-fibroin-based composite water-absorbing material has the advantages of favorable water absorptivity, favorable water retention property and favorable biodegradability.
Owner:无锡市奥菲超细织物有限公司

Method for carrying out real silk fabric anti-crease and antibacterial finishing by virtue of laccase-TEMPO process

The invention discloses a method for carrying out real silk fabric anti-crease and antibacterial finishing by virtue of a laccase-TEMPO process. Quinones active groups are generated through catalyzing tyrosine residual groups in real silks by laccase so that chitosan molecules are grafted on the real silks; then 2,2,6,6-tetramethylpiperidine-nitrogen oxide (TEMPO) is added and is used for catalyzing chitosan and tyrosine in the real silks to generate formyl groups, so that the grafting amount and bonding firmness of the chitosan on the real silks are increased, and the real silk fabric anti-crease and antibacterial finishing is realized. The method comprises the following specific steps of: (1) catalytically oxidizing the tyrosine residual groups in the real silks by the laccase; (2) taking the chitosan and the quinones active groups in the real silks to react; (3) catalyzing the real silks by laccase-TEMPO to graft the chitosan; and (4) washing the real silks with water and then treating. Compared with traditional chemical cross-linking-process vacuum fabric anti-crease and antibacterial finishing, the method has the advantages that the grafting efficiency of the chitosan is high, enzyme treatment conditions are moderate, the real silk fabric anti-crease and antibacterial effect is relatively good and the strength of the fabric is improved.
Owner:JIANGNAN UNIV

Pre-treatment process method of high acid crude oil

The invention relates to a pre-treatment process method of high acid crude oil. The method comprises the following steps that high acid crude oil is treated by coupling deacidification and electro-desalting processes by combining chemical extraction and electro-desalting; a first level tank is taken as a deacidification and electro-desalting tank; a demulsifier and an extractant are injected before a crude oil electro-desalting static mixer; after being fully mixing with crude oil, the mixture enters into the first level desalting tank; generated naphthenate and salt-containing sewage in the crude oil are dissolved in the extractant; treated deacidified oil enters into second and third level desalting tanks after being mixed with the demulsifier and water through the static mixer for desalination and dehydration; treated crude oil enters into a subsequent heat exchange unit; after a period time of operation of an electro-desalting system, impurities such as mud in raw material oil are flushed by a non-stop back purge device to discharge mud-containing sewage out of the tank; an extract phase is acidified to separate out naphthenic acid which is further extracted and purified by light dydrocarbon, and the extractant is purified and recovered and recycled.
Owner:长江三星能源科技股份有限公司

Deep desulfurization method for diesel by coupling of oxidation and extraction

The invention relates to a deep desulfurization method for diesel by coupling of oxidation and extraction, that is a catalyzed oxidation desulfurization method for diesel in petroleum refining technologies. The method comprises the following steps of crushing and fine grinding a zirconium hydroxide carrier, dipping into impregnation liquid formed by aqueous ammonium meta-tungstate solution, placing the impregnation liquid in an ultrasonic generator to carry out ultrasonic facilitating impregnation, boiling off water after the impregnation is finished, drying and baking at high temperature to obtain a WO3/ZrO2 super solid acidic catalyst; adding aqueous hydrogen peroxide solution, extraction solvent and the WO3/ZrO2 super solid acidic catalyst in diesel containing sulfur, carrying out catalyzed oxidation desulfurization reaction under the action of power ultrasonics, cooling to the room temperature after the reaction is finished, separating and recycling the solid catalyst, standing and layering, wherein the upper layer is desulfurized diesel and the lower layer can be reused after regeneration. The invention has simple process, mild condition, high desulfurization degree and gasoline recovery, low cost and no pollution to environment and can obtain ultra-low sulfur clean diesel products.
Owner:YANGZHOU UNIV
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