50results about How to "Operational safety and environmental protection" patented technology

The invention discloses etching liquor and a circular use method thereof. The etching liquor comprises copper chloride, organic amine, an oxidizing agent, an additive agent and deionized water. In each liter of etching liquor, 10 to 150 g of copper chloride, 10 to 200 g of organic amine, 1 to 100 g of the oxidizing agent, 1 to 100 g of the additive agent and the balance deionized water are included; in the use process of the etching liquor, the solution is alkaline, and the requirement for a device is not high, the use cost is low, operation is safe and environment-friendly, and a detection control system is simple; low etching is achieved, the etching speed is high, and stability is high. A membrane separation technology and a deposition reduction technology are combined, circular recycling of the etching liquor can be well achieved, a product after the reaction is nitrogen and water, other impurities are not brought in, and filter liquor obtained after copper filter and depositing can be recycled to be used for preparing new etching liquor.

The invention discloses an alkaline etching solution. The alkaline etching solution is characterized by comprising, ammonium chloride, ammonium bicarbonate, aqua ammonia and an additive, wherein the additive is of the urea type. In the use process of the alkaline etching solution, the etching solution is alkaline, and the requirement for equipment is low; the use cost is low, operation is safe andenvironmentally friendly, and a detection control system is simple; side etching is low, the alkaline etching solution is suitable for production of dense and thin circuit boards, and the etching speed can be automatically controlled, the etching speed is high, and the stability is rapid.

The invention discloses a self-fusion anti-corrosion adhesive tape and a preparation method of self-fusion adhesive thereof. The adhesive tape comprises a self-fusion adhesive layer and a back material layer overlapped, wherein the back material layer is in a dual-layer structure formed by co-extruding an elastomer and polyethylene; one surface of the self-fusion adhesive layer is bonded with the polyethylene of the back material layer; and the self-fusion adhesive layer is mixed colloid consisting of butyl rubber, polyethylene, inorganic reinforcing powder, tackifying resin, plasticizer and antioxidant according to a proportion. In the application of the technical scheme provided by the invention, the adhesive bonding of an adherend can be finished under the contact pressure based on the pressure-sensitive feature of the self-fusion adhesive; the construction is convenient, the requirement on the surface treatment of a pipe body is low, and the operation is safe and environmentally-friendly; and moreover, the self-fusion anti-corrosion adhesive tape also has the characteristics of good anti-corrosion effect, puncture fusion, good chemical resistance, wide application range and the like, and is not restricted by the pipe diameter and pipe shape.

The invention belongs to the technical field of microbes, and particularly relates to a method for separating ceratocystis spp from soil. According to the method, a carrot is used for concentrating the ceratocystis spp, the ceratocystis spp is separated and purified by means of selecting a single ascospore group for lining. Due to the fact that part of operations does not require a strict aseptic condition, the method is applicable to bacterial strain collection during field studying and field investigation, and working efficiency is increased; by means of selecting the single ascospore group for lining, a target bacterium is separated and purified, separating and purifying efficiency is increased effectively, and time is saved; the method for separating the ceratocystis spp from the soil is low in cost, wide in utilization range, safe and environmental-friendly.

The invention discloses an efficient vibration swing impact nano machine system. The system comprises a gas cylinder, a vacuum feeding machine, a first vacuum impact nano machine, a second vacuum impact nano machine, a vacuum packing machine and a vacuum pump, wherein each of the first vacuum impact nano machine and the second vacuum impact nano machine comprises a cavity, a vibration swing machine, four high-elasticity springs and a base, impact mesons are contained in the cavity, a rectangular base is arranged at the lower part of the vibration swing machine, a support capable of fixedly connecting the cavity with the vibration swing machine is welded at the upper part of the rectangular base, lower parts of four corners of the rectangular base are fixedly connected with upper ends of the four high-elasticity springs respectively, and lower ends of the four high-elasticity springs are fastened on the base; and the first vacuum impact nano machine and the second vacuum impact nano machine are further sleeved with waterproof sleeves. The invention belongs to the technical field of microelement nano machines in medicine and health care industries and provides the only efficient vibration swing impact nano machine system which is highly anti-oxidant, safe and zero-pollution in China.

The invention discloses a neutralizing anticorrosion inhibitor for a petrochemical industry H2S-HCL-CO2-HCN-H2O corrosion system. The neutralizing anticorrosion inhibitor is prepared through the steps that malic acid, tartaric acid and glycol are mixed, stirred uniformly and heated to the temperature of 120-130 DEG C, polyethylene polyamine is added, and the mixture is subjected to the reaction for 2-3 h to obtain a reactant 1; glycol is added into the reactant 1 to obtain a reactant 2; the reactant 2 is cooled to 90 DEG C, deionized water is added, and the mixture is cooled to room temperature to obtain a reactant 3; and auxiliary synergist is added into the reactant 3 to obtain the neutralizing anticorrosion inhibitor, wherein the auxiliary synergist comprises hexamethylene tetramine and thiourea. The anticorrosion property of the neutralizing anticorrosion inhibitor is obviously superior to that of a current oil acid imidazoline and naphthenic acid imidazoline anticorrosion inhibitor, moreover, the preparation process is green and environment-friendly, and pollution to the environment is avoided.

The invention relates to lactobacillus casei TH139 for producing gamma-glutamyl transpeptidase in a high yield. The lactobacillus casei TH139 is preserved in China General Microbiological Culture Collection Center, and the preservation number is CGMCC No.18686; the strain is used to produce the gamma-glutamyl transpeptidase through fermentation at 37 DEG C and pH of 7.0; after centrifugation is performed to collect bacterial cells, the bacterial cells are subjected to bioconversion in the presence of L-glutamine and ethylamine at 40 DEG C and pH of 9.0 to obtain L-theanine; and the reaction solution is subjected to membrane separation, ion exchange resin separation is performed, and concentration crystallization is performed to obtain a qualified L-theanine finished product. The method forproducing the L-theanine by using the lactobacillus casei developed by the invention has the advantages of food safety, environmental protection, simple operation and low costs, and has good industrial application value.

The invention relates to a method for simultaneously determining four effective components in Gongying Qinglan granules. The method comprises the following steps: extracting a test sample by using 70% ethanol as an extraction solvent, and simultaneously determining the four main components at one time by using liquid chromatography. According to the invention, 278 nm, 324 nm and 346 nm are adopted as the wavelengths of the effective components, so baseline fluctuation is small, the response values of chlorogenic acid and caffeic acid are higher, and the response value of berberine hydrochloride is also taken into consideration; the method can be used for simultaneously determining the contents of chlorogenic acid, caffeic acid, baicalin and berberine hydrochloride in the Gongying Qinglan granules, and is rapid, sensitive, accurate and high in specificity; and the method can simultaneously determine the contents of the four components through one-time sample treatment, so not only is the reagent and time saved, but also working efficiency is improved.

The invention discloses a method and equipment for refining high-purity diethyl carbonate, and aims to provide a method and equipment for preparing high-purity diethyl carbonate, which is characterized by single-tower continuous operation, simple separation method, high yield, safe and environment-friendly operation, low energy consumption and use of diethyl carbonate with purity of 99.5 percent as a raw material. The refining method disclosed by the invention comprises three steps: feeding and steam charging operation, light component collection operation, and side withdrawal process regulation and product collection. The rectification column of the refining equipment comprises a built-in regular stainless steel wire gauze corrugated packing and an overhead built-in condenser.

The invention discloses a high-efficiency vibration swing impact nanometer machine system. It includes a gas cylinder, a vacuum feeder, a first vacuum shock nanomachine, a second vacuum shock nanomachine, a vacuum packaging machine, and a vacuum pump. The first vacuum shock nanomachine and the second vacuum nanomachine include a cavity, a vibration swing Machine, four highly elastic springs and a base, the cavity contains impact mesons, the lower part of the vibration swing machine is provided with a rectangular base, and the upper part of the rectangular base is welded to make the cavity and the vibration swing The bracket that is fixed to the machine, the lower parts of the four corners of the rectangular base are respectively fixed to the upper ends of the four high elastic springs, the lower ends of the four high elastic springs are fastened to the base, the first vacuum impact nanomachine and the second Second, the vacuum impact nanometer machine is also equipped with a waterproof cover. The invention belongs to the technical field of microelement nanomachines in the medicine and health care industries, and provides the only highly oxidation-resistant, safe, zero-pollution, high-efficiency vibration swing impact nanomachine system in the country.

The present invention relates to an adsorbent for hemoperfusion and aqueous solution to remove endotoxin and a preparation method thereof. The adsorbent is mainly formed by connecting non-woven fabrics with polyethyleneimine through graft chains in the form of covalent bonds or covalent groups; The preparation method mainly includes the steps of grafting and activating fibers on the surface of the nonwoven fabric and immobilizing polyethyleneimine ligands. The preparation method of the invention is simple, less environmental pollution, and the obtained adsorbent has good endotoxin adsorption performance, blood compatibility and safety.

The invention relates to a waterproof weather balloon and a production method. The weather balloon comprises a balloon matrix and a hydrophobic film coated on a balloon matrix surface. The hydrophobicfilm comprises 8.5-11.5 parts of a hydrophobic main agent, 1-3 parts of a solubilizer, 0.1-0.3 parts of an organic film forming agent and 85.2-90.4 parts of water. The hydrophobic main agent is a compound of one or more of an organosilicon hydrophobic agent and an organic fluorine hydrophobic agent. In the weather balloon, a synthetic material possessing a hydrophobic function is used; and through a necessary operation, a layer of molecular film and even a nanometer film which can achieve a hydrophobic effect are manufactured on a balloon surface. After the balloon is casted and encounters water, beads are formed and are rapidly dispersed and drained so that a problem that the weather balloon which is casted on a rainy day or in humid weather carries out embrittlement acceleration and isblasted in advance due to accumulation of ice on the surface because of surface water absorption so that a service height requirement can not be satisfied is solved.

The invention discloses a sanding method of fast-growing wood. The sanding method comprises the steps: (1) removing stains from the surface of the fast-growing wood, and then applying sanding auxiliaries to the surface of the fast-growing wood; (2) performing sanding treatment to the fast-growing wood with a disc sander, and the model of sanding materials is any one of 100#, 120# and 150#, wherein the substrate of the sanding materials is a fabric abrasive belt; abrasive materials comprise, by weight, 29-36 parts of brown corundum abrasives, 1-3 parts of magnesium borate, 4-7 parts of docosanamide and 1-2 parts of iodooctadecane; the abrasive materials are bonded with the substrate through adhesive. The sanding method of the fast-growing wood, provided by the invention, has the advantages of easy operation, low cost, and safety and environmental protection in the operation process, and the surface of the fast-growing wood sanded is free of burrs, and smooth and flat, so that convenience is provided for subsequent coating operation; and in the sanding process, the fast-growing wood is not broken, and the rate of finished products is high.

The invention belongs to the technical field of microbes, and particularly relates to a method for separating ceratocystis spp from soil. According to the method, a carrot is used for concentrating the ceratocystis spp, the ceratocystis spp is separated and purified by means of selecting a single ascospore group for lining. Due to the fact that part of operations does not require a strict aseptic condition, the method is applicable to bacterial strain collection during field studying and field investigation, and working efficiency is increased; by means of selecting the single ascospore group for lining, a target bacterium is separated and purified, separating and purifying efficiency is increased effectively, and time is saved; the method for separating the ceratocystis spp from the soil is low in cost, wide in utilization range, safe and environmental-friendly.

The invention provides a vitamin A acetate intermediate C15 and a preparation method of vitamin A acetate. The method uses 1-halo-2-methyl-4-acetoxy-2-butene as raw material, and triphenylphosphine or phosphite triester to prepare the corresponding Wittig reagent through substitution reaction, and then react with β-cyclic lemon The aldehyde undergoes Wittig reaction, hydrolyzes the ester group under alkaline conditions, and acidifies to obtain the corresponding halogenated product, and then reacts with triphenylphosphine or phosphite triester again to prepare C15. Vitamin A acetate can be prepared by using the obtained C15 under alkaline conditions and 2-methyl-4-acetoxy-2-butenal through Wittig reaction. The method of the invention has single reaction types, easy operation and realization of reaction conditions, safe and environment-friendly operation, simple post-treatment, and low cost; strong reactivity, high reaction selectivity, high atom economy, and high yield and purity of target products.

The invention provides a method for recovering sericin from sericin wastewater. The method comprises the following steps: (1) clarifying sericin wastewater through a microfiltration membrane; (2) continuing to grade the penetrating fluid obtained in the step (1) by an ultrafiltration membrane; (3) after grading is finished, concentrating the penetrating fluid in the step (2) by an ultrafiltrationmembrane; and (4) drying the concentrated solution obtained in the step (3) to obtain sericin. The method is simple, high in desalination rate, safe, environmentally friendly and high in sericin recovery rate, protein can be recycled in a graded mode, and no chemical reagent is added.

The invention provides a composite biological enzyme waste denim decolorizing preparation, a using method of the composite biological enzyme waste denim decolorizing preparation for treating denim leftovers, and a decolorizing process system and method. The decoloring preparation comprises the following components by content: 1.5%-2.0% of cold bleaching enzyme, 1.0%-1.5% of laccase, 5.0%-10.0% ofthiourea dioxide, 31.5%-71.5% of chlorine dioxide, 20%-53.5% of sodium percarbonate and 1.0%-1.5% of urea. Each single enzyme of the composite biological enzyme preparation provided by the invention has the characteristics of low reaction temperature and high reaction speed which are most suitable for enzyme activity, the labor, water and energy are saved, and injury to health of workers is avoided; and the solid preparation is convenient to store and convenient to transport and use. The water use amount of the decoloring process system is small, the decoloring process system can be used conveniently, a discharge process does not exist, and the decoloring process system is environmentally friendly; and the process is advanced, the degree of automation is high, the preparation can be produced continuously all seasons, running, oozing, dripping and leaking are avoided, and three wastes are also avoided.

The invention relates to an overflow protection cup and a negative pressure regulator. The overflow protection cup comprises a main body, an isolation body, an inner core body, a filter and a floater. The main body comprises an accommodating portion and a clamping portion, a bottom plate of the accommodating portion is provided with a second inlet, and a protrusion block surrounding a lower port is arranged on the upper end face of the bottom plate. The isolation body comprises an isolation portion and a channel convex block arranged along the outer edge of the isolation portion, and a supporting convex block is arranged on the upper end face of the bottom plate of the isolation body. The inner core body comprises a cover plate and a limit tube arranged on the lower end face of the cover plate, a limit column is arranged on the inner side of the limit tube, the limit column protrudes out of the lower end face of the limit tube downward, and the cover plate is provided with a second outlet. The isolation body is arranged in the accommodating portion and located on the protrusion block, the inner core body is arranged in the isolation portion, the cover plate is higher than the upper end face of the isolation body and is covered at the upper end of the accommodating portion in sealing mode, the floater is arranged in the limit tube and located above the limit convex block, and the filter is arranged on the clamping portion in detachable mode. The overflow protection cup is low in use cost and environment-friendly.