103results about How to "Easy for industrial implementation" patented technology

The invention provides an enzyme preparation for removing pesticide residual on the surfaces of vegetables and fruits and a preparation method of the enzyme preparation. The enzyme preparation comprises one or more enzymes and alkaline buffer salts, wherein each enzyme preparation is the particular preparation with aperture distributed from 50 to 500 nanometers. The enzyme preparation further comprises fillers with porous structures; and the enzyme preparation is prepared by the method comprising the following steps: pelletizing the mixing materials of one or more enzymes and fillers to obtain the enzyme particle mixture; embedding 45wt% to 55wt% of enzyme in the enzyme particle mixture into the filler; and then mixing the enzyme particle mixture and the water solution of the alkaline buffer salt through a fluidized bed. With the adoption of the enzyme preparation provided by the invention, the pesticide residual on the surfaces of the vegetables and the fruits can be completely and effectively removed; harmful microorganism on the surfaces of the vegetable and fruit can be removed; and the quality of the vegetable and fruit can be further improved.

The invention relates to a method for deeply cleaning and removing cobalt by wet hydrometallurgy. The method is characterized in that neutrally-leached supernate in wet hydrometallurgy is sequentially treated by a first-stage cleaning process, a second-stage cleaning process and a third-stage cleaning process to obtain new liquid containing not greater than 0.5mg/l cobalt, wherein the neutrally-leached supernate in wet hydrometallurgy is deeply purified through a cleaning agent and an activating agent in the second-stage cleaning process; the cleaning agent is alloy powder prepared through 50-65% by weight of zinc, 30-49% by weight of manganese, 0.05-2% by weight of aluminum, 0.05-2% by weight of magnesium, and 0.9-3% by weight of lead; the activating agent is one or two of antimonic salt and antimony white. The method has the advantages that the cobalt removing efficiency is outstanding, and particularly the zinc consumption is low and the purpose of deep cleaning can be achieved while the method is used for processing a high-cobalt zinc sulfate solution; meanwhile, impurities which damage the wet hydrometallurgy are not introduced; the operation is simple; the industrial implementation is easily carried out; and the economic benefit is obvious.

The invention discloses a three-freedom degree decoupling paralleling device, which comprises the following parts: frame, mobile platform, mutually vertical rotary moving branched chain and two same structure mobile moving branched chains fixed between frame and mobile platform, wherein the rotary moving branched chain contains the following mechanic connection parts: frame rotary pair, frame Hooke's hinge, moving pair and platform Hooke's hinge; the mobile moving branched chain concludes frame moving pair and platform moving pair connected by small connecting rod, platform rotary pair along the same direction of platform moving pair; two mobile moving branched chains possess joint square table and platform rotary pair with two chains vertical distribution on two vertical sides of one square table, which connect the mobile platform through the joint platform rotary pair.

The invention relates to a bacillus with high temperature resistance and cellulose degradation capacity and an application thereof. The invention specifically relates to bacillus JWT-1, belongs to Bacillus subtilis and is preserved in China General Microbiological Culture Collection Center (CGMCC); the preserving date is on July 11, 2016; the preserving No. is CGMCC No.12758. The bacillus has higher degradation capacity for cellulose, hemicellulose, pectin and lignin in straws; the bacillus can grow and multiply under high temperature of 60 DEG C; the highest endurable temperature is 100 DEG C; the bacillus has excellent high-temperature compost application prospect.

The invention discloses a method for processing coke by electrolytic aluminium waste and a special device. The method is characterized by comprising the following steps of: obtaining a carbon material from electrolytic aluminium waste via magnetic separation and flotation processes; drying the carbon material, and preheating to 100-120 DEG C; adding asphalt and tar, mixing via kneading equipment, and then moulding in hydraulic moulding equipment by pressing; curing the moulded raw materials in an electro-thermal dry distillation device; and drying and preheating the carbon material by the dry-distilled coke product via a waste heat utilization device. The invention discloses a new process and a new technology for resource utilization for the high-fluorine-content carbon-containing solid waste of electrolytic aluminium, which is used for deeply processing the carbon material obtained by the electrolytic aluminium waste, so as to further increase the additional value of the electrolytic aluminium waste. Compared with the prior art, the new process and the new technology have the advantages of being wide in application range, high in treatment and disposal amount, advanced in technology, low in treatment cost, and good for the implementation of industrialization. Simultaneously, the project is specific in the aimed target market, and obvious in market competition advantage.

The invention provides a gas sensitive material for detecting low-temperature formaldehyde at room temperature and a preparation method thereof as well as a formaldehyde gas sensor and belongs to the technical field of gas sensitive sensors. The gas sensitive material is prepared from noble metal nanoparticles and a functionalized graphene binary compound material, wherein the mass ratio of the noble metal nanoparticles to the functionalized graphene binary compound material is 1 to (0.1 to 30); the gas sensitive material can be used for detecting formaldehyde gas with the concentration of ppb grade at room temperature. Therefore, compared with a traditional formaldehyde gas sensitive material, the gas sensitive material and the formaldehyde gas sensor containing the gas sensitive material do not need a high-temperature working environment, so that the power consumption and cost are extremely reduced and resources are saved, and furthermore, the formaldehyde gas sensor has a wider application field. Materials needed by each sensor substrate are relatively less so that the cost of the materials is relatively low and industrialized implementation of the formaldehyde gas sensor can be facilitated.

The invention discloses a vulcanized arsenic-removed slag stabilization treatment method, and belongs to the technical field of hazardous solid waste curing and safe treatment method. According to the method, smelted arsenic-containing wastewater vulcanized arsenic-removed slag is used as a raw material and is pretreated by carbide slag, a cementitious material and an additive are added, stabilization treatment of arsenic, fluorine, lead, cadmium, mercury and other toxic elements in the vulcanized arsenic slag is achieved through primary mixing, strong mixing, extruding, cutting molding, natural curing and steam curing, and a solidified body is subjected to a toxic leaching test according to GB5085.3-2007 and meets stockpiling or landfill requirements. The vulcanized arsenic slag with various sources can be treated by the method; compared with the prior art, the method has the advantages of simple equipment, convenience in operation and easy industrialized implementation.

The invention discloses a dynamic pressure gas thrust ceramic bearing, which comprises two outer discs and an inner disc in clearance fit, wherein the inner disc is clamped between the two outer discs. Two ends of the outer discs are provided with high-precision planes, and two ends of the inner disc are provided with groove-type patterns. The groove-type patterns are uniformly distributed in an impeller type so as to form a wedge-shaped space between the outer discs and the inner disc. Each groove is formed by extending an inner circle of the inner disc to an outer circle. The groove-type patterns at both ends of the inner disc are arranged symmetrically. The dynamic pressure gas thrust ceramic bearing is fixedly arranged on a high-speed rotating shaft through the inner disc, the two outer discs are fixedly arranged on a bearing seat, and the continuously generated dynamic pressure gas can be well kept in the fit clearance of the outer discs and the inner disc under the drive of the high-speed rotating shaft to form an air film required for supporting the axial positioning, namely thrust function of the high-speed rotating shaft, so that the functions of the dynamic pressure gas thrust ceramic bearing with certain stability and load capability are realized.

The invention provides a gas-sensitive material for detecting low-concentration formaldehyde at a room temperature. The gas-sensitive material is a noble metal, metallic oxide and functionalized graphene ternary composite material, wherein the molar ratio of a metallic oxide to a noble metal is 0.2-5 and the mass of functionalized graphene is 15-50% of the sum of the mass of the metallic oxide and the noble metal; or the gas-sensitive material is a noble metal, metal hydroxide and functionalized graphene ternary composite material, and the molar ratio of metal hydroxide to the noble metal is 0.2-5 and the mass of the functionalized graphene is 15-50% of the sum of the mass of the metal hydroxide and the noble metal. Compared with a traditional metallic oxide gas-sensitive material, the gas-sensitive material and the gas sensor comprising the gas-sensitive material provided by the invention have the advantages that a high-temperature working environment is not needed, the power consumption is greatly reduced and resources are saved. Materials required on each sensor substrate are relatively few, so that the cost of the materials is relatively low and industrialization implementation of a formaldehyde gas sensor can be facilitated.

The invention discloses a safe medical needle comprising a needle tubule. A second inclined plane and a first inclined plane are positioned at the front end of the needle tubule, and the axial length L1 of the first inclined plane is shorter than the axial length L2 of the second inclined plane; the length L2 of the second inclined plane is preferably 65-75% of the total length L of the two inclined planes, and a small concave arc extending backwards is positioned at an inner point of the needle on the first inclined plane, and the inner point is adjacent to the top end of the arc line. Based on the structure of the former needle, the length L2 of the second inclined plane extends towards the first inclined plane, and a small concave arc is formed on the top end of the arc line of the inner point of the needle by fine grinding, sand blasting or laser beam heat treatment, thus the resistance against insertion of the needle head is reduced, absolute safety is ensured as human organism is not affected, needle insertion is more smooth, amount of bleeding is reduced, and pains of patients can be relieved. The medical needle is a really safe medical needle and can replace all the existing medical needles used in various situations.

The invention discloses a method for removing copper, cadmium, nickel and cobalt out of a zinc sulfate solution through one step. The method comprises the steps that manganese metal powder and/or manganese-based alloy powder are/is added into the zinc sulfate solution containing copper, cadmium, nickel and cobalt, wherein the temperature of the zinc sulfate solution ranges from 45 DEG C to 70 DEG C, and the pH of the zinc sulfate solution is larger than 4.0; and stirring is carried out for a reaction, after the reaction is finished, filtering separation is carried out, and the zinc sulfate solution with the contents of copper, cadmium, nickel and cobalt all lower than 0.8 ppm is obtained. According to the method, copper, cadmium, nickel and cobalt can be efficiently removed out of the zinc sulfate solution through one step at the same time, no impurities endangering zinc electrolyzing are introduced, the technological process is simple and low in cost, no complex and special equipment is needed, and good industrial application prospects are achieved.

The invention discloses a self-seal kinetic pressure gas radial ceramic bearing which comprises an outer sleeve and an inner sleeve which are clearance fit, wherein two ends of the outer sleeve are all fixedly provided with large seal stop rings; two ends of the inner sleeve are all provided with small seal stop rings; the outer peripheral wall and two ends of the inner sleeve are all provided with trench-type decorative patterns with regular shapes; the kinetic pressure gas radial ceramic bearing is fixedly installed on a high-speed revolving shaft through the inner sleeve; and under the driven of the high-speed revolving shaft, the kinetic pressure gas generated continuously can be preferably maintained in the match clearance of the outer sleeve and the inner sleeve, a gas film required by the bearing function for supporting a high-speed operation shaft, and the seal function required by the gas film is provided by the large seal stop rings and the small seal stop rings, self-seal role is played, i.e., the ceramic bearing has self-seal performance, thus the kinetic pressure gas radial ceramic bearing function with stability and loading capability is realized.

The invention discloses a polypropylene hot melt adhesive, and belongs to the technical field of oil and gas pipeline corrosion prevention. The polypropylene hot melt adhesive comprises matrix resin and a grafting agent. The weight ratio of the matrix resin to the grafting agent is 100:1-100:2; the matrix resin is prepared from a polypropylene, ethylene-vinyl acetate copolymer, polyethylene and tackifying resin; the grafting agent is prepared from pentaerythritol ester, triguaiacyl phosphite, dicumyl peroxide and maleic anhydride. The invention further discloses preparation methods of the polypropylene hot melt adhesive and a polypropylene contraction band. The obtained polypropylene hot melt adhesive has the advantages of being high in temperature resistance class, excellent in high temperature peel strength and shear strength, good in anticorrosion sealing performance and the like, and is applicable to a 3PP outer anticorrosion coating field joint. The preparation methods have the advantages of being simple in technology, convenient to operate, low in production cost and the like and promote industrialized implementation.

The invention provides a method for producing natural gas and a fabricated wall plate through food and kitchen waste and a production line, and belongs to the fields of environmental protection and building materials. The problem of resource recycling of the food and kitchen waste is solved. The method includes the steps that urban food and kitchen waste is sorted, separated, hydrolyzed and acidified, and then sent into an anaerobic fermentation tank for fermentation; biogas produced by fermentation is purified and then used as fuel for calcining ceramsite, or refined andpurified into the natural gasas fuel to be sold; after biogas liquid and biogas residue after anaerobic fermentation are subjected to solid-liquid separation, the biogas residue and construction waste soil or river sludgeare subjected to mixing granulation to be sent to a ceramsite calcination device to calcine lightweight ceramsite; the lightweight fabricated wall plate is prepared from the lightweight ceramsite, cement, plaster and the like; and the biogas liquid after solid-liquid separation can be returned to the production process to prepare slurry, or is purified and deodorizedfor making the lightweight prefabricated wall plate. Energy recovery and material buildingrecovery of urban food and kitchen waste treatment are realized, coordination and unification of environmental, social and economic benefitsis ensured, and the method for producing the natural gas and the fabricated wall plate through the food and kitchen waste is suitable for treatment and comprehensive utilization of the food and kitchen garbage waste in large, medium and small cities.

The invention discloses a nanocrystalline metal oxide functionalized carbon nanotube material and a formaldehyde gas sensor prepared by using the material. The material comprises carbon nanotube and nickel oxide, and the mass ratio of the carbon nanotube to the nickel oxide is (1:0.1)-(1:30). The nanocrystalline metal oxide functionalized carbon nanotube material provided by the invention, can have a well response to the formaldehyde gas when used as gas sensitive material applied to the formaldehyde gas sensor through special proportion between the carbon nanotube and the nickel oxide, is relative low in cost, and can facilitate the industrialized implementation of the formaldehyde gas sensor.

The invention discloses a liquid level detection device and method for medical cleaners. The device comprises a pressure tube, a pressure sensor, an adapter, a control system, a connecting tube and a display screen. The pressure tube is fixed to the sidewall of an inner container of a cleaner. One end of the pressure tube is open, and the other end of the pressure tube is closed; the open end of the pressure tube is downwardly communicated with the inner container of the cleaner. One end of the adapter is connected with the upper portion of the pressure tube, and the other end of the adapter is connected with the pressure sensor. The pressure sensor is electrically connected with the control system. The connecting tube is disposed between the adapter and the pressure sensor, and the pressure tube is communicated with the pressure sensor through the connecting tube. When liquid level of the inner container of the cleaner changes, pressure of air hermetically enclosed in the pressure tube also changes; the inner pressure of the pressure tube is measured through the pressure sensor, and the control system can calculate the height of liquid level of the inner container and displays the height on the display screen of the cleaner in real time.

The invention discloses a method for deeply removing cobalt from zinc sulfate leaching liquid. The method is to add excessive activated zinc powder in cobalt-contained zinc sulfate solution for reaction; and after the reaction is finished, the filtration and the separation are performed to obtain zinc sulfate solution with a cobalt content of lower than 0.8 mg/L, wherein the activated zinc powder is obtained by activated liquid activated zinc powder containing copper and/or antimony and with pH of 2.5-3.5. The method can deeply remove cobalt ions in the zinc sulfate solution with high efficiency and low cost without introducing impurities harm to the zinc electrolysis, and is easy to realize the industrialization.

The invention relates to a composite, and provides a waste paper/high-density polyethylene luminescent composite and a preparation method thereof. A long-persistence luminescent material subjected to organic modification is adopted as luminescent pigment, the long-persistence luminescent material, pretreated waste paper fiber powder, high-density polyethylene, a coupling agent, a processing agent and the like are subjected to blending extrusion, and the luminescent wood-plastic composite is obtained. According to the waste paper/high-density polyethylene luminescent composite and the preparation method thereof, the comprehensive utilization level of waste resources is greatly improved, and environmental pollution caused by treatment of waste resources is greatly reduced; compared with a traditional board and a traditional wood-plastic composite, the luminescent composite is easy to process, low in cost, wide in raw material source, environmentally friendly, free of pollution and the like; besides, by adding the luminescent material, the advantages of practicability, attractiveness, safety and the like of the luminescent composite are improved, and based on an existing wood-plastic board production process, the luminescent composite is a wood-plastic board very suitable for large-scale production.

The invention relates to an improved method for preparing aromatic ketone, which is characterized in that: in the presence of iron sesquioxide catalyst, benzene or substituted benzene and acid anhydride are reacted to prepare the aromatic ketone, wherein the substituted benzene refers to a benzene molecule ring on which one hydrogen atom or two hydrogen atoms is/ are substituted by a substituted group, and the substituted group is alkyl, hydroxy or methyl ether group containing 1 to 7 carbons; and the prepared aromatic ketone is mixed aromatic ketone, one single bond of the carbonyl of the aromatic ketone is connected with the alkyl containing 1 to 4 carbons, while the other single bond is connected with the benzene or the substituted benzene. The reaction temperature is between 60 and 150 DEG C; the molar ratio of the benzene or the substituted benzene to the iron sesquioxide catalyst is 1: 0.0001-0.005; and the molar ratio of the benzene or the substituted benzene to the acid anhydride is 1: 0.5-2. The using amount of the iron sesquioxide is far less than that of aluminum chloride in the prior art, the reaction condition is mild, the method does not need to strictly isolate air,the product has good color and texture, the post treatment is simple, and the preparation process does not produce hydrogen chloride and is a green chemical process.

The invention belongs to the technical field of preparation of soybean protein peptides, and particularly relates to a preparation method for a soybean protein peptide. The preparation method of the soybean protein peptide provided by the invention comprises the steps of pulverizing soybean protein micro powder, and performing sieving; adding water to obtain soybean protein powder, performing uniform stirring, adding a mixed solution, performing uniform stirring, adding a protective agent, and performing homogenization treatment to obtain a mixed material; performing irradiation treatment on the mixed material, and performing filtering to obtain a precipitate; performing freezing treatment on the precipitate, performing thawing, drying the thawed precipitate in the shade, grinding the precipitate into fine powder, and performing sieving to obtain fine powder; adding water to the fine powder, regulating pH, rising temperature, adding mixed enzymes in three times for enzymolysis, inactivating the enzymes, cooling to 25 DEG C to obtain enzymolysis liquid, filtering the enzymolysis liquid, and concentrating and drying the filtrate to obtain the soybean protein peptide. The product obtained by the method of the invention has narrow molecular weight distribution and low molecular weight, and the method of the invention cannot damage active groups on a molecular chain of soybean protein, thus being beneficial to maintaining the physiological activity of the soybean protein peptide.

The invention relates to the technical field of microorganism soil processing, in particular to an assimilated nitrate nitrogen strain and application thereof. The strain is NCT-2 assimilated nitrate nitrogen strain, the classification name is Bacillus megaterium, the strain is preserved in the Chinese General Microbiological Culture Collection Center, the preservation date is March 21, 2011, and the preservation number is CGMCC No.4698. The invention can effectively assimilate the microorganisms of excessive nitrate nitrogen in facility cultivation soil.

The invention discloses a disposable sterile safe injection needle which comprises a syringe needle thin tube, a first inclined surface forming a 15-degree angle with an axial surface of the thin tube and a second inclined surface forming at 18-degree angle with the axial surface of the thin tube, wherein the width between two arc top ends of a crescent-moon-shaped cross section of the first inclined surface formed on the tube wall portion is equal to the standard thickness of the tube wall, an inner blade, a left blade and a right blade of the cross section are round fillets, and no burrs exist on a plane of the cross section. The disposable sterile safe injection needle cannot pick up tissue of human bodies or bring out fractionation, cannot damage the strength of a syringe needle, is truly safe, and can be used for replacing various medical syringe needles used in various occasions.