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381 results about "Environment Problem" patented technology

Environmental issues are harmful effects of human activity on the biophysical environment. Environmental protection is a practice of protecting the natural environment on individual, organizational or governmental levels, for the benefit of both the environment and humans.

Method for ecological remediation on acid tailing pond

The invention provides a method for ecological remediation on an acid tailing pond. By removing acids from soil, and by laying nonwoven cloth and a sealing layer, good partitioning is achieved, and byfurther laying a water reservation layer and a coated seed layer, the purpose of re-greening an acid tailing pond is achieved. The method has the beneficial effects that rainwater can be reserved tothe maximum extent, the sealing layer is capable of preventing the rainwater from infiltrating into tailings, the problems of underground water and ground water pollution can be substantially solved,the construction method is simple, and the construction cost is low; by using a seed coating technique, a set of rapid nursery stock breeding technique is formed, a stable ecological remediation system is cultured, the target of completely re-greening woody plants within 90 days is achieved, and environment problems of acid tailing ponds are solved for good.
Owner:杰瑞(莱州)矿山治理有限公司

Modular Water Purification and Delivery System

InactiveUS20090008318A1Maximize capacityFlattening or eliminating the parabolic fluid flow profileUltrafiltrationWater/sewage treatment by ion-exchangeFiberHollow fibre
A modular filter system is provided with one or more modules that can be interchangeable, depending upon the specific application or specific health or environmental issue presented. Disclosed combinations can include one or more of any of the following modules in any relative position to one another: (a) a microbiological contaminant mitigation module, preferably in the form of an inverted u-shaped hollow fiber filter module wherein the fibers have ends potted on the downstream side and that consists essentially of hydrophilic fibers for water filtration with a small amount of hydrophobic fibers for venting of entrapped air; (b) a first chemical mitigation module, preferably in the form of an adsorption module comprising carbon or the combination of carbon and a deionization resin; and (c) a second chemical mitigation module, preferably in the form of a deionization resin module. Modules including a carbon bed or a resin bed may be equipped with a pair of hydrophobic foam bed restraints that apply opposing axial pressure to the bed in all operating conditions.
Owner:PRISMEDICAL CORP

Cosmetic pedestal mirror

A cosmetic pedestal mirror has a base composed of a glass disk hood with a thickness combined with a bottom board. The bottom board has an outer surface pasted with a slip-proof pad. The glass disk hood has an outer surface embedded with decorative pieces and an interior surface coated with a decorative coating layer. The glass disk hood has a through hole defined at its center to allow a bolt with a smaller diameter on a connecting rod to penetrate and cooperate with a securing element for fixing. Thereby, the cosmetic pedestal mirror has reduced manufacturing cost and improved utility and appearance and does not need electroplating treatment to eliminate environmental issues.
Owner:MIRROR KING ENTERPRISE

Geopolymeric concrete based on recycled aggregate and preparation method of geopolymeric concrete

The invention relates to geopolymeric concrete based on recycled aggregate, and a preparation method of the geopolymeric concrete. The concrete is prepared by taking construction waste as aggregate and inorganic geopolymer as an adhesive through an alkali activation process. The recycled aggregate geopolymeric concrete prepared by using the method has the characteristics that the concrete can be rapidly dried, the compressive strength, particularly the early-stage compressive strength is high, the volume shrinkage in the coagulation process is extremely low, the coefficient of volume expansion is approximate to 0, and acid-base corrosion resistance is good. Due to the adoption of the method, the defects that the conventional concrete is low in early-stage strength and the coagulation time is long are overcome; a method for rapidly repairing concrete pavement is provided, and problems of recycling and reusing construction waste aggregate and environment problems caused by the construction waste aggregate are solved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method for synthesizing zeolite by fly ash and application thereof

InactiveCN1631513AImprove purification effectAvoid the disadvantages that the treatment effect is affected by temperature, etc.Other chemical processesWater/sewage treatment by sorptionPhosphatePollution
The invention concerns a way of synthesize stone using coal powder and its applying in removing nitrogen and phosphorus in the waste water. Get the coal powder as the material, add the material including aluminum, silicon, or fluorine which can saluted in the alkaline solution, after mixing, add metal alkaline solution and synthesize fei stone by water heating reaction, then change shape by metal salt aqua, we get the fei stone after separating solid and liquid. Change the fei stone to the grains and put them in the filtering bed, achieving to remove nitrogen and phosphorus. The invention solves the environment problem, economy the resource of nitrogen and phosphorus in the coal powder, no second pollution.
Owner:SHANGHAI JIAO TONG UNIV

Method for radish soil testing and formulated fertilization

The invention discloses a method for radish soil testing and formulated fertilization. Currently, farmers mainly use fertilizer in farming and fertilization, however, soil is hardened, the yield and the quality of crops are reduced, and environment problems of lost and unbalanced soil nutrient, non-point source pollution and soil acidification are caused. A soil test and a fertilizer field test serve as a basis, and according to radish fertilizer requirement laws, nutrient preserving capability and fertilizer response, the application amount, the application period and the application method of fertilizer such as nitrogen, phosphorus, potassium, microelements and secondary elements are provided on the basis of reasonable organic fertilizer application. The scientific fertilizer application is applied in accordance with radish growth rules, the fertilizer utilization rate is improved, the soil fertility is improved, the soil pollution caused by improper fertilizer application is reduced, the biological environment is improved, and the radish yield and economic benefits are improved effectively.
Owner:INST OF ECONOMIC CROP HUBEI ACADEMY OF AGRI SCI

Methods and systems for distributing liquid chemicals

Briefly, this invention uses one or more pressure vessels having installed therein on its inside a balloon of flexible and non-expandable wall to smoothly and continuously deliver a chemical to any end user without contamination and gas dissolution. Since the balloon installed inside the pressure vessel isolates a high pressure gas from the chemicals, gas dissolution in the chemical and the resulted gas bubble problems are effectively eliminated. Further, contaminants in the high pressure gas which fills the balloon will not be transferred into the chemical and the extremely toxic chemical will not be transferred into the gas to be exhausted as a serious environmental issue. Unlike the vacuum / pressure system, the contamination by the ambient air leaking into the system is avoided because the disclosed delivery system is always with the pressure higher or equal to the ambient pressure.
Owner:AIR LIQUIDE AMERICA INC

Castor oil-based hydrophilic chain extender as well as preparation method and application thereof

The invention discloses a castor oil-based hydrophilic chain extender as well as a preparation method and application thereof. According to the castor oil-based hydrophilic chain extender, starting from castor oil, one of the renewable resources, a hydroxyl group is introduced by mercapto group-ene light click reaction to obtain an intermediate, and then a carboxyl group is generated through hydrolysis reaction of an ester group (or ricinoleic acid is generated through ester hydrolysis reaction of castor oil first, and then the hydroxyl group is introduced by mercapto group-ene light click reaction), the hydrophilic chain extender containing at least two hydroxyl groups and a carboxyl group is prepared, and the hydrophilic chain extender is applied to preparation of anionic aqueous polyurethane emulsion. According to the castor oil-based hydrophilic chain extender as well as the preparation method and the application thereof, the castor oil is applied to hydrophilic chain extender rawmaterials, has positive reference value for broadening application and increasing added value of natural fat products and also plays a positive role in reducing or replacing an environment problem caused by the use of petroleum non-renewable resources. The castor oil-based hydrophilic chain extender prepared by the invention is liquid at normal temperature, a contact area with other raw materialsduring a reaction is larger, the mixing is more uniform and the reaction speed is higher.
Owner:SOUTH CHINA AGRI UNIV

Recycled aggregate concrete

The invention provides a recycled aggregate concrete which comprises the following ingredients of cement, recycled aggregate, admixture, water and pumping aid for the concrete determined according toperformances, and the ingredients of the concrete according to the weight percentages of the concrete are respectively 4-20 percent of cement, 0-35 percent of recycled fine aggregate, 0-46 percent ofrecycled rough aggregate, 1-8 percent of admixture, 1.5-2.5 percent of the pumping aid for the concrete based on the weight sum of the cement and the admixture, and the balance of water. The inventionhas the effects that the effective utilization of building wastes is realized so that limited resources can be recycled, and the environment problem is solved. The recycled aggregate concrete is oneof main routes of developing green concretes and realizing the ecologization of building products. The concrete can reduce the pollution to the environment from building wastes, decrease the production volume and the production energy consumption of natural ore materials, accord with the requirements of saving resources and energy and not damaging the environment of the world environment organization, is more beneficial for sustainable development, not only can satisfy requirements of the contemporary people, but also does not damage the capacity of satisfying unborn requirements.
Owner:天津港保税区航保商品砼供应有限公司 +1

Preparation method of carrier-free talcum powder master batch

ActiveCN101792536ASolve pollutionSolve problems such as poor compatibilityGranulation by material expressionDiameter ratioDiluent
The invention relates to a talcum powder, in particular to a preparation method of carrier-free talcum powder master batch. The preparation method of the carrier-free talcum powder master batch comprises the following steps of: preparation of additive: mixing diluent and binding agent according to a certain proportion, wherein the diluent accounts for 90-99 percent, and the binding agent accounts for 1-10 percent; treatment of the talcum powder: stirring and mixing the mixed additive and talcum powder, wherein the additive accounts for 15-35 percent, and the talcum powder accounts for 65-85%; molding of the talcum powder: putting the mixed talcum powder into an extruder for extruding at the normal temperature, controlling the pelleting pressure to be 1-2 MPa, the diameter of the extruded granule to be 1-5mm and the length-diameter ratio to be 1-4; and drying the extruded granules at 120-180 DEG C for 0.5-1h, and obtaining the product, wherein the percent is weight percent. The preparation method has the advantages of solving the environment problem caused by rising powder in the using process of the traditional talcum powder.
Owner:SHENYANG POLYTECHNIC UNIV +1

Clarification method for sugarcane juice

The invention discloses a clarification method for cane expressed juice, which is an improvement for sulfurous acid method manufacturing technique of a cane sugar factory. The cane juice is conveyed into a reactor after the first heating, and carbonation is performed through adding lime and carbon dioxide; solid-liquid separation can be performed to the carbonation cane juice to remove solid impurity, and the stoving liming neutralization treatment is performed to the obtained clear juice taking sulfur dioxide and lime as clarificant; the stoving liming neutralization treatment can be also performed to the turbid carbonation cane juice directly taking sulfur dioxide and lime as clarificant. The stoving liming neutralization cane juice is conveyed into a settler after the second heating, and the clear juice and the mud juice are separated. The clarification method has the advantages that the brenstone use level is reduced, the production cost is saved, the sulfur dioxide residual in white sugar is decreased greatly, the product quality is improved, the carbon dioxide discharge amount is reduced, the clear juice purity is increased by 1 to 1.5, the white granulated sugar color value is reduced by twenty percent, and therefore the environment problem does not exist.
Owner:南宁苏格尔科技有限公司

Method for preparing cellulose nano-fibers based on biomass material

The invention discloses a method for preparing cellulose nano-fibers based on a biomass material. The method comprises the following steps: carrying out drying and fining treatment on the biomass material; then, mixing the generated biomass material and an organic acid solvent, heating, reflowing and separating biomass cellulose; then carrying out nano fibration treatment on the separated biomass cellulose by adopting a physical method, so as to obtain the cellulose nano-fibers with high purity and a high length-diameter ratio. By adopting the method disclosed by the invention, the preparation efficiency is effectively improved and the cellulose nano-fibers with the high purity and the high length-diameter ratio can be prepared; the generation of chemical pollution wastes is reduced; meanwhile, a series of environment problems caused by the fact that chlorine is used in a traditional purification method are avoided.
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI

Stable acid inhibitor formulations with improved performance, lower toxicity and minimal environmental issues

Aqueous concentrates of non-toxic corrosion inhibitors, preferably storage-stable, useful in acidic cleaning solutions for cleaning the surfaces of metal that contacts food or potable water, the concentrates comprising at least one polymer, which may be protein-derived or synthetic; at least one iodine ion providing compound; an acidifier; and optionally, at least one anionic, nonionic or amphoteric surfactant; at least one coupling agent; and a pH adjuster; the concentrates being substantially free of nonylphenol derivatives and compounds containing elemental iodine and providing an improved acid inhibition and less foaming than similar compositions comprising nonylphenol derivatives and elemental iodine when mixed with aqueous acidic cleaners; acidic solutions prepared therefrom; and methods of their use.
Owner:HENKEL KGAA

High oil absorption resin and its preparation method

This invention discloses a high oil-absorbing resin and its preparation. This high oil-absorbing resin is made by using scrap tire as raw material, combining cross linking agent, dispersant agent, assistant dispersant agent, free radical polymerization initiator, solvent and water. This invention not only utilizes the waste sources effectively, but also solves the environment problem caused by scrap tire.The method is simple and cost is low.
Owner:DONGHUA UNIV

Toughened and reinforced polylactic acid nano composite material and preparation method thereof

InactiveCN101037532AGood adhesionIntercalation effect improved significantlyALUMINUM STEARATESFunction group
The invention relates to method of preparing secondary functionalization organic modified montmorillonite (TFC), toughening and reinforcement biodegradable polylactic acid nano composite material using the organic montmorillonite and preparing method thereof. The novel double-function group organic modified montmorillonite (TFC) enhances adhesion force between montmorillonite and polymer molecule and obviously increases property of the composite material. The toughening and reinforcement biodegradable polylactic acid nano composite material is prepared by using polylactic acid as main raw material, and adding certain poly(epsilon-caprolactone) and lactic acid-epsilon-caprolactone copolymer; plasticizer selects acetyl tri-n-butyl citrate, tri-n-butyl citrate, triethyl citrate, dioctyl phthalate, and dibutylphthalate; lubricant selects aluminum stearate and calcium stearate; heat stabilizer selects maleic anhydride and epoxy soybean oil (EOS); and intensifier selects TFC montmorillonite (MMT). The prepared composite material possesses high strength and good toughness, and is hopeful of replacing traditional non-degradable material to be applied in field such as packaging, medical, and engineering for solving environment problems generated by white pollution.
Owner:SHANGHAI UNIV

Hybrid Control System And Method

A hybrid process control system including electrical transmission of power to a sub-sea hydraulic power unit, which in turn provides hydraulic power for control of hydraulic actuators. A circulation system using small bore tubing in the umbilical cord in combination with a traditional topside hydraulic power unit provides for active control of hydraulic fluid quality with respect to contamination caused by the sub-sea hydraulic actuators, especially process gas from down hole safety valves. Thus, a more economical power transmission is achieved without reduction of fluid quality, which is essential to system integrity and reliability. Also, a significant enhancement of power transmission without a dramatic increase in the size of hydraulic supply and return lines is achieved. Fluid environmental issues are reduced to a negligible aspect.
Owner:VETCO GRAY SCANDINAVIA

Agricultural region water resource environment diagnosis method and system

ActiveCN104200080AAddressed issue where differences in underlying surfaces were not consideredSpecial data processing applicationsDiagnosis methodsWater resources
The invention relates to an agricultural region water resource environment diagnosis method. The agricultural region water resource environment diagnosis method is characterized by comprising the first step of building an evapotranspiration model and a runoff model and diagnosing agricultural region water according to the evapotranspiration model and the runoff model, the second step of building a non-point source pollution model and diagnosing agricultural region non-point source pollution, and the third step of diagnosing the agricultural region water resource environment according to diagnosis on the agricultural region water and the non-point source pollution. The method not only takes space difference, caused by nonuniformity of underlying surfaces of different planting structures, between total water and irrigation water into consideration, but also takes different non-point source pollution drainage intensities of the underlying surfaces into consideration, and can effectively diagnose a water resource environment problem.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI

Deep coal bed gas and heat co-extraction method

The invention discloses a deep coal bed gas and heat co-extraction method. The method comprises the steps that 1, a first vertical drilling well is constructed, a heat-preserving casing pipe is adopted for carrying out gas sealing and heat isolating protection for a well hole; 2, construction of a layering horizontal well is carried out according to the thickness of a coal bed, the layering numberK is determined according to the coal bed real thickness M and the gas drainage radius R, and K is equal to M / 2R; 3, a second vertical drilling well is constructed; 4, circumferential dispersing holes of the horizontal well are constructed, and then first extraction of gas is carried out; 5, hydraulic fracturing is carried out on all the drilled holes, a three-dimensional fracture mesh is formed,and then second extraction of the gas is carried out; 6, the first vertical drilling well serves as a water injecting well, the second vertical drilling well serves as a steam output well, the wateris injected into the deep coal bed, the principle of heat transfer is utilized for transferring geothermal energy into the water steam, and the water steam is extracted and utilized. According to themethod, gas extraction and geothermal energy exploitation can be carried out for the deep coal bed which is 1500-3000 meters, the geothermal extraction efficiency is improved, energy is saved, emission is reduced, and the geological environment problems of water and soil pollution, thermal pollution and the like are prevented.
Owner:SHANDONG UNIV OF SCI & TECH

Corn stalk biochar, method for removing sulfonamide antibiotics in water by using corn stalk biochar and application of corn stalk biochar

The invention relates to corn stalk biochar, a method for removing sulfonamide antibiotics in water by using the corn stalk biochar and application of the corn stalk biochar. The corn stalk biochar is prepared by the following steps: firstly, drying and crushing; secondly, putting into a tubular atmosphere furnace, heating by adopting programs, and performing oxygen-free carbonization under the condition of 500 to 700DEG C for 120 to 180 minutes; thirdly, cooling in the furnace to room temperature, and grinding charcoal ash; fourthly, soaking with hydrochloric acid, filtering, washing, drying to constant weight, and sieving. The corn stalk biochar serving as an adsorbent is put into a water body containing the sulfonamide antibiotics for adsorbing to remove the sulfonamide antibiotics, so that the difficult problem that antibiotics in water are difficult to remove is solved. Meanwhile, the environment problem brought by straw burning is solved, wastes are changed into the valuables, the recycling of corn stalks is realized, and better economic benefits and social benefits are obtained.
Owner:SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP

Difunctional electrolyte and preparation method thereof

The invention relates to a difunctional electrolyte and preparation method thereof. The electrolyte is prepared by dissolving LiODFB, TEAODFB and additives to PC radical nonaqueous organic solvent. The PC radical nonaqueous organic solvent is one or multiple-solvent system at least containing propene carbonate, and ethylene carbonate, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, propyl methyl carbonate, ethyl, methyl acetate, ethyl acetate, ethylene sulfite, propylene sulfite, acetonitrile, gamma-D lactone. The electrolyte of the invention has difunctional characteristic, which not only satisfies the request for the lithium ion battery by Li[+] chemical energy saving, but also satisfies the request for a super capacitor double electrode layer energy saving, at the same time being the difunctional electrolyte suitable for the super capacitor battery. The electrolyte is beneficial to promote the contribution for the energy and environment problem solution and provides a developing way for the electrolyte development.
Owner:CENT SOUTH UNIV +1

Method for extracting gamma-polyglutamic acid by inorganic salt/organic solvent coprecipitation effect

The invention discloses a method for extracting gamma-polyglutamic acid. The scheme of the method comprises the following steps: filtering out thallus by pumping fermentation liquor; adding organic solvent into fermentation supernate, adding sodium chloride, potassium chloride or ammonium sulfate, and putting for one night to obtain precipitate which is a gamma-polyglutamic acid coarse product; dissolving the gamma-polyglutamic acid coarse product into distilled water, filtering out undissolved micromolecule substance in a centrifuging way, adding sodium chloride, potassium chloride or ammonium sulfate and organic solvent into the supernate, stirring to obtain a gamma-polyglutamic acid precipitate, dissolving the gamma-polyglutamic acid precipitate into the distilled water according to 1: (5-10) (m : v), and filtering out impurity by an ultrafiltration membrane; and performing the freeze drying to ultrafiltration peritoneal effluent so as to obtain white gamma-polyglutamic acid powder. After the method is used, the product extraction yield can be effectively improved, the usage amount of the organic solvent can be reduced, the production cost can be lowered, the environment problem caused by a large number of organic solvent during extracting can be avoided, and the environment pollution can be reduced.
Owner:天津北洋百川生物技术有限公司

Process for producing propionate

The invention discloses a microbial fermentation culture medium and a process for producing propionate by using the fermentation culture medium. According to the fermentation process, the fermentation culture medium in which corn steep liquor dry powder and soybean meal are taken as an organ nitrogen source is used, so that the fermentation time is shortened, and the yield of the propionate is also improved; and raw materials are industrial by-products, so that the cost is saved, and the environment problem is also solved.
Owner:沈阳科纳提克生物科技有限公司

Intelligent robot fault diagnosis method based on artificial intelligence, device and system

The invention discloses an intelligent robot fault diagnosis method based on artificial intelligence, a system, an intelligent robot and a mobile terminal. The intelligent robot fault diagnosis comprises steps of capturing the problem state of the intelligent robot when the intelligent robot detects the fault produced by the intelligent robot, generating a problem two dimension code of the network environment problem or the system fault problem and displaying when the problem state is determined to be the network environment problem or the system fault problem so as to enable the mobile terminal to scan the problem two dimension code in order to obtain the corresponding fault information, receiving the user operation aiming for the fault information, generating a diagnosis two dimension code according to the operation, performing scanning and recognition on the diagnosis two dimension code to obtain the diagnosis information corresponding to the diagnosis two dimension code, and regulating the intelligent robot according to the diagnosis information. The intelligent robot fault diagnosis method enables the intelligent robot to be easy to maintain, reduces the paralysis, shut-down and repair rate of the intelligent robot, enables the user to use and maintain the intelligent robot at a pretty low learning cost, and improves the user experience.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD

Device and method for spraying liquid material film based on ultrasonic vibration table

The invention specifically relates to a device and a method for spraying liquid material film based on an ultrasonic vibration table, belonging to the technical field of semiconductors. The invention provides the device for spraying liquid material film based on the ultrasonic vibration table in order to improve the evenness of a sprayed film and reduce the usage amount of a spraying solution, the waste and the environment pollution, and the device comprises a nozzle moving mechanism, an ultrasonic atomizing nozzle, a device adsorbing component and an ultrasonic vibrating component, wherein the nozzle moving mechanism is used for moving the ultrasonic atomizing nozzle, the ultrasonic atomizing nozzle is used for atomizing liquid to form superfine liquid drops, the device adsorbing component is arranged below the ultrasonic atomizing nozzle and is used for adsorbing and fixing substrate devices to be sprayed, and the ultrasonic vibrating component is arranged at the lower end of the device adsorbing component and is used for vibrating the spraying substrate devices in the vertical direction. By the method, while the evenness of photoresist coated on a wafer is improved, the usage amount of the used photoresist is largely reduced, thus the generated environment problems are also reduced.
Owner:TSINGHUA UNIV

Method for preparing single-walled carbon nanotube fiber and composite fiber thereof

The invention relates to the field of carbon nanotube fiber and composite fiber thereof, in particular to a method for preparing single-walled carbon nanotube fiber and composite fiber thereof. A single-walled carbon nanotube prepared through a floating catalyst chemical vapor deposition method is adopted as a base material, an amphipathy surface active agent is used for dispersing the single-walled carbon nanotube and extruded into a condensation bath to form the fiber, and continuous preparation of the high-strength and high-conductivity fiber is achieved. A material with the good compatibility is added into a fiber stock solution, the composite fiber is obtained, and more functions are given to the fiber. According to the method, consumption of strong acid in the existing wet method spinning technology is avoided, and safety risk and environment problems in the production process are reduced; meanwhile, consumption of insulativity polymer adhesives is avoided, the conductivity of the fiber prepared through wet method spinning is improved, the problems that in the existing carbon nanotube composite fiber preparation technology, the function material is distributed in the fiber not uniformly, and the carrying amount cannot be increased easily are solved, and uniform distribution of the high-load functional material in the fiber base is achieved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Method for modifying desulfuration ash for cement retarder

The invention relates to a method for modifying desulfuration ash produced by a steel enterprise sintering process or a power plant smoke drying method or semidry method smoke desulfuration for cement retarder. The method is characterized by comprising the following steps of: A, performing micro thinning treatment on the desulfuration ash by adopting a ball milling or airflow crushing mode so that the specific surface area of the desulfuration ash grain diameter is 300 to 1,000 m<2> / kg; and B, putting the desulfuration ash subjected to the micro thinning treatment into a closed container of 450 to 700 DEG C, blowing oxygen or air into the closed container, and reacting for 20 to 60 minutes to obtain the modified desulfuration ash for the cement retarder. The method for modifying the desulfuration ash for the cement retarder not only can solve a series of environment problems caused by long-term stacking of the desulfuration ash, but also can produce certain economic benefit and social benefit.
Owner:中钢集团武汉安全环保研究院有限公司

Acrylic resin composition dispersed in water

InactiveUS20050165159A1Fully dispersedImprove the storage stability (usable durationOrganic dyesPolyurea/polyurethane coatingsDispersion stabilityWater dispersible
The present invention provides an acrylic resin composition dispersed in water giving good appearance, having sufficient dispersion stability, providing coating film physical properties excellent in durability and weather resistance and also capable of properly dealing with the recent environmental issues, and a two-component coating composition set using such an acrylic resin composition dispersed in water. The above-mentioned acrylic resin composition dispersed in water comprises an acrylic resin containing a carboxyl group-containing monomer and a hydroxyl group-containing monomer, a water-dispersible isocyanate compound, and a specific compound as a neutralizing base.
Owner:NIPPON SHOKUBAI CO LTD

Method for preparing liquid fuel by hydrothermal liquification of hyacinth

The invention belongs to the technical fields of environmental protection and new energy, in particular to a method for preparing liquid fuel by hydrothermal liquification of hyacinth. The method comprises the following steps: firstly, carrying out simple treatments such as crushing and the like on the hyacinth, directly pouring the treated hyacinth into an autoclave to form slurry with a certainsolid-to-liquid ratio, charging inert gases or reducible gases with a certain pressure into the autoclave, stirring, and raising the temperature to 180-450 DEG C, keeping the temperature for 1-120 minutes, quickly cooling to the room temperature, collecting a reaction mixture, leaching and extracting the mixture with organic solvent, separating the mixture, filtering an organic phase and removingthe organic solvent to obtain biological oil. The method takes the hyacinth as a raw material and can carry out liquefied treatment on the hyacinth after large-scale artificial culture without dryingtreatment, thus the method can be used as a way for obtaining environment-friendly renewable energy resources and reduce the environment problem brought by large amount of proliferation of the hyacinth while utilizing hyacinth residual body in a resource mode.
Owner:FUDAN UNIV

Environment-friendly process for producing dihydromyrcenol by using dihydromyrcene hydration reaction

The invention discloses an environment-friendly process for producing dihydromyrcenol by using a dihydromyrcene hydration reaction. The process adopts an integrated system consisting of a jet reaction device, an oil-water separation device and a rectification device. A high-speed injector is adopted in a reactor for reinforcing heat transfer and mass transfer of a reaction process; an acid (containing sulphuric acid, phosphoric acid and p-toluenesulfonic acid) is used as a catalyst and is in closed cycle; and an oil-water separator is arranged in the process flow to reduce the heat load of a rectification tower, and meanwhile the catalyst and the water phase in the oil-water separator are cycled and used in the system together so as to avoid the environment problems caused by the discharge of acid waste water. The process of the invention can improve the conversion rate of dihydromyrcene, and reduce the energy consumption and the production cost. Compared with a mechanical stirring reactor or a fixed bed reactor with the same scale, the process can improve the conversion rate of the dihydromyrcene by 1.2 to 4 times, and reduce the energy consumption of a dihydromyrcenol product per ton by more than 55 percent.
Owner:厦门中坤化学有限公司 +1
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