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32results about How to "No new pollution" patented technology

Refining production method of glycerin

The invention provides a refining production method of crude glycerin. Byproducts of grease ester exchange or hydrolyzation are used as ingredients, and byproducts of biodiesel can also be used as ingredients. The method comprises the following steps: acidizing treatment, decolourization, alkali return for neutralization, concentration for salt removal, ion exchange and concentration treatment, wherein the ion exchange step comprises the substep of sequentially using cations, anions, cations, anions and zwitterions to exchange resin posts in a mixed way, the operation temperature of the resin posts is controlled between 40 and 60 DEG C, the flow rate is 15 mL / min, and finally, the pure glycerin solution is collected. The process of the invention has the advantages of simple operation condition, low temperature, little pollution and high yield, and can avoid the deterioration of the glycerin at the high temperature, the yield is higher than 97 percent, and the product purity is higher than 99.2 percent. The invention also provides a multiplex mixed type anion-cation exchange resin post combination device applicable to the method.
Owner:HUNAN ACAD OF FORESTRY

Waterproof glue for external wall ceramic tile

The invention discloses a waterproof glue for external wall ceramic tile, which is formed by formulating acrylic emulsion, ethylene glycol, film forming auxiliary (dodecyl ester), alkali swelling thickener, antiseptic and defoaming agent, the waterproof glue has the advantages of being waterproof, joint-filling, transparent, rich in elasticity, environmentally-friendly, bright and clean, simple and convenient in applying, etc., and is free from toxicity, odor and new pollution even in case of the long-term use thereof and is also age resisting, therefore, the waterproof glue for external wall ceramic tile is an ideal product for environmental protection.
Owner:康信勇

Method for preparing three-dimensional natural fiber oil-absorbing material

The invention provides a method for preparing a three-dimensional natural fiber oil-absorbing material. The method is characterized by comprising the following steps that 1, a cellulose fiber and a low-melting point fiber are loosened and blended, wherein the percentage by mass of the low-melting point fiber is 10 to 20 percent; 2, the loosened and blended fiber raw material is processed into a fiber net by airflow net-forming equipment; 3, the fiber net is heated and stuck into a three-dimensional structure, wherein the heating and sticking temperature is 130 to 160 DEG C, and the heating and sticking time is 20 to 100 minutes. According to the method for preparing the oil-absorbing material which takes a natural fiber, such as ceiba, bulrush floss, linter and bamboo pulp fiber as a raw material, a relatively ideal clustering state and a stable three-dimensional fiber clustering body structure of the natural fibers in a fiber clustering body are realized, the comprehensive oil-absorbing property of the fiber is improved, and the problems that scattered fibers are difficult in reclamation and oil leakage is caused again in the practical application of the fibers are well solved.
Owner:DONGHUA UNIV

Waste gum powder flexible acrylic acid water gap filling material and its preparation method

The present invention belongs to the field of building material technology, in the concrete, it relates to a waste rubber powder flexible acrylic acid water-base joint-filling material and its preparation method. It is made up by using rubber powder obtained by processing waste tyre as aggregate, and mixing it with the chemical raw materials of acrylic acid elastic emulsion, sodium hexametaphosphate, sodium benzoate, ethylene glycol, propylene glycol, polydimethylsiloxane, methyl cellulose, calcium carbonate and colouring agent according to a certain mixing ratio.
Owner:TONGJI UNIV

Flexible acrylic acid waste polyurethane water composite joint filling material and its preparation method

The present invention belongs to the field of building material technology, in the concrete, it relates to a flexible acrylic acid waste polyurethane water-base composite joint-filling material and its preparation method. It is made up by using powder obtained by processing waste polyurethane material as aggregate and mixing it with the chemical raw materials of acrylic acid elastic emulsion, sodium hexametaphosphate, sodium benzoate, ethylene glycol, propylene glycol, polydimethylsiloxane, methyl cellulose, calcium carbonate and colouring agent according to a certain mixing ratio.
Owner:TONGJI UNIV

Comprehensive utilization method for Bayer red mud

The invention provides a comprehensive utilization method for Bayer red mud, belonging to the technical field of metallurgy and chemical engineering. The method comprises the following steps: firstly,mixing the Bayer red mud with concentrated sulfuric acid, and conducting complete salinization under a low-temperature condition to obtain sulfated red mud; then, roasting the prepared sulfated red at a temperature of 600-900 DEG C, subjecting a roasted product to water leaching, and then conducting solid-liquid separation to obtain a sodium-rich low-iron leachate and high-iron red mud oxidized clinker; and finally, adding sodium carbonate into the leachate, carrying out solid-liquid separation, and carrying out evaporative crystallization on a filtrate to obtain sodium sulfate crystals. Thehigh-iron red mud oxidation clinker can be used for extracting aluminum. According to the method, high-purity sodium sulfate can be prepared, and aluminum can be extracted, so the waste is turned intowealth, and harm caused by direct accumulation of the red mud is eliminated.
Owner:UNIV OF SCI & TECH BEIJING

Method for recovering lithium and potassium from high-lithium-potassium anode carbon residues or high-lithium-potassium electrolytes

The invention discloses a method for recovering lithium and potassium from high-lithium-potassium anode carbon residues or high-lithium-potassium electrolytes. The method comprises the following stepsthat (1) the high-lithium-potassium anode carbon residues or the high-lithium-potassium electrolytes are finely ground as raw materials, mixed with a concentrated sulfuric acid solution, and heated to 280-500 DEG C for reacting; (2) water is added into the reacted materials for leaching, and primary filtrate is filtered and separated out; (3) the pH value is adjusted to be equal to 6-8 when the temperature of the primary filtrate is less than or equal to 30 DEG C, and secondary filtrate is obtained through filtering and separating; (4) the secondary filtrate is cooled to minus 5 DEG C to-minus 10 DEG C, and Na2SO4 is separated out; third filtrate is filtered and separated out; (5) after the third filtrate is heated to 90-100 DEG C or boiled, Na2CO3 is added and Li2CO3 is precipitated andseparated out, and the Li2CO3 and fourth filtrate are filtered and separated out; and (6) the fourth filtrate is cooled to minus 5 DEG C to-minus 10 DEG C, and Na2SO4 is precipitated out, a K2SO4 solution is filtered to separated out, and a K2SO4.xH2O product or a K2SO4 product is obtained by concentrating or dehydrating. The method is low in process flow cost and convenient to operate, almost does not generate new pollution while the waste is fully recovered, and has a good popularization prospect.
Owner:SHENYANG BEIYE METALLURGIGAL TECH CO LTD

Soft pellet aquatic feed

The invention provides soft pellet aquatic feed which is convenient to use and can replace alive small trash fishes. The soft pellet aquatic feed is mainly prepared from fishmeal, seaweed meal, beer yeast powder, fermented soybean meal, poly-phycocolloid, lysine, methionine, arginine, monopotassium phosphate, choline chloride and the like; the moisture content is more than or equal to 20% and less than or equal to 40%. The soft pellet aquatic feed can be produced in a large scale in a factory-like manner; meanwhile, the soft pellet aquatic feed can be preserved at a room temperature for more than 30 days and does not go bad.
Owner:福建格林生物科技有限公司 +1

Clay acrylic surface decorating material and its preparing method

The invention is a kind of dual environmental protection building surface ornamenting material produced by using brick powders of grinded waste construction clay bricks as main materials and its producing method. The invention makes clay brick powders as main materials, and is compounded from such chemical industry materials as acrylic acid emulsion, sodium hexametaphosphate, sodium benzoate, glycol, trimethylene glycol, polydimethyl siloxanes, methylcellulose and titanium oxide powder as per certain proportion. The invention has simple technics, convenient and sanitary construction, and can be used both in upscale wall surface and surfaces of column, tablet and board. After ornamented, it has elegant and vivid brick wall style, especially suitably used for outer ornament and repair of building wall surfaces whose outer walls need brick wall structures.
Owner:TONGJI UNIV

Method for efficiently extracting lithium from lithium-rich aluminum electrolyte waste residues and preparing anhydrous aluminum fluoride

The invention belongs to the technical field of nonferrous metal extraction. The invention provides a method for efficiently extracting lithium from lithium-rich aluminum electrolyte waste residues and preparing anhydrous aluminum fluoride. According to the method, HF gas generated by curing and volatilizing concentrated sulfuric acid is subjected to dust removal and impurity removal and then directly makes contact with an aluminum-loaded organic phase to prepare anhydrous AlF3, the purity of the synthesized anhydrous AlF3 is high, the prepared anhydrous AlF3 can be returned to the aluminum electrolysis process to serve as a cosolvent, and cyclic utilization of aluminum and fluorine is achieved. According to the method, the lithium resource in the lithium-rich aluminum electrolyte waste residues is recycled in the form of Li2CO3, the recycling rate is high, the product purity is high, and high economic benefits are achieved. According to the method, sodium dimethyl dithiocarbamate solution is used as a precipitator to deeply purify and remove calcium, magnesium and aluminum, the impurity element removal effect is thorough, and raw materials are prepared for the step of precipitating lithium in sodium carbonate. In the treatment process of the lithium-rich aluminum electrolyte waste residues, various components can be efficiently recycled, and new pollution is not generated while waste materials are fully recycled.
Owner:CENT SOUTH UNIV

Luminous insecticidal multifunction surface material and preparation method thereof

The invention relates to a luminous disinsection multifunctional surface material and a corresponding preparation method, belonging to construction material technical field, which uses permethrin, SrAI2O4:Eu2+ as main materials and adds styrene-acrylic emulsion, sepiolite and other materials. The invention has simple process, easy operation, clearness and wide application in hospital, canteen, company and channel or the like. Via the luminous property, the invention can be used as indication and decorative material, particularly as aqueous environment-friendly material, without toxicity, smell and pollution in production, construction and application.
Owner:TONGJI UNIV

Method for preparing vanadium trioxide by recycling anode electrolyte of invalid vanadium battery

The invention discloses a method for preparing vanadium trioxide by recycling anode electrolyte of an invalid vanadium battery. The method comprises the following steps: a, measuring tetravalent vanadium ion concentration and pentavalent vanadium ion concentration of the anode electrolyte of the invalid vanadium battery; b, adding a carbon-based adsorbent into the electrolyte in the step a, adsorbing, filtering and drying to obtain a vanadium-containing adsorbent; and c, roasting the vanadium-containing adsorbent obtained in the step b under the protection of an inert atmosphere to obtain a vanadium trioxide product. According to the method for preparing the vanadium trioxide by recycling the anode electrolyte of the invalid vanadium battery, the problem of disposal of the electrolyte of the existing invalid vanadium battery can be solved, a high-added-value vanadium trioxide product can be obtained, and the method is simple in process, free of pollution, environmentally friendly and good in application prospect.
Owner:ANSTEEL BEIJING RES INST +1

Cracking agent C9 primary hydrotreated oil deodorising method

The invention relates to a cracking agent C9 primary hydrotreated oil deodorising method and the method comprises the following steps: a. dissolving acidic activator in primary hydrotreated oil; b. using 3-5 times of water to prepare stabilized chlorine dioxide water solution; c. mixing the obtained solutions in step a and step b, stirring for 0.5-3h, precipitating for 0.1-2h, discharging reactionliquid, obtaining precipitate; d. neutralizing the precipitate with basic neutralizer to ensure the precipitate to be neutral; e. washing with water 1-2 times, discharging water and obtaining the finished product, wherein the content of the acidic activator is not more than 0.4% of the primary hydrotreated oil, the content of stabilized chlorine dioxide is 0.1-0.5% of primary hydrotreated oil andthe above steps are performed at room temperature and normal pressure. The invention has simple process, low cost, no new pollution and good effect.
Owner:广东新华粤石化集团股份公司

A kind of preparation method and application of bio-based deodorant

The invention relates to the technical field of highway asphalt, in particular to a bio-based deodorant, a preparation method and application thereof, comprising 40-60 parts of 3,4-dilinoleoyloxy-a-methylphenylacrolein, nano-white 40-60 parts of carbon black, 0.3-0.5 parts of antioxidant and 1-3 parts of polyethylene wax are prepared to obtain a bio-based deodorant. In the use process of the present invention, Schiff bases can be formed with amino groups in asphalt; stable thiol acetal can be formed with hydrogen sulfide, mercaptan, etc. generated in the process of adding stabilizers, so that toxic gases are no longer overflowed and use pollution is reduced. . The synthetic raw materials are all derived from natural substances, such as 3,4-dihydroxybenzaldehyde is extracted from the root of the Lamiaceae plant Salvia miltiorrhiza, and linoleic acid can be extracted from a variety of oil crops. The synthetic method is environmentally friendly and pollution-free; the synthetic product is degradable, and can be degraded by bacterial microorganisms after the pavement reaches its service life. The synthetic raw material has a special plant fragrance, which can relieve the discomfort caused by the peculiar smell generated during the asphalt mixing process to the operator.
Owner:山东高速集团有限公司创新研究院 +2

An electrokinetic-permeable reactive wall joint remediation method for heavy metal-contaminated soil

The invention belongs to the technical field of remediation of polluted soil, and in particular relates to a joint repair method of electrodynamic-permeable reaction walls for heavy metal polluted soil, in which a positive electrolytic cell and a negative electrolytic cell are arranged within a certain distance, and an electrolytic cell is arranged at a place where heavy metals of pollutants are enriched. The permeable reaction wall is connected to the power supply to perform electrodynamic restoration of the polluted soil. The permeable reaction wall is filled with adsorption materials, and the adsorption material is a three-layer coating structure: the innermost core layer is reduced iron and biological bacteria agent, The core layer is wrapped with an iron-loaded modified montmorillonite middle layer, and the middle layer is wrapped with a biochar outer layer. In the joint repair method of the present invention, the adsorption material used in the permeable reaction wall is a three-layer coating structure, and the zero-valent iron and biological bacteria agent with unstable performance are coated, which can effectively improve its stability and utilization rate, and has the advantages of High practical value and broad application prospects.
Owner:迪天环境技术南京股份有限公司

Treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate

The invention relates to a technology of industrial waste liquid treatment, and provides a treatment technology of acid washing and alkaline washing waste liquid of aluminum substrate. The treatment technology is mainly characterized in that oil removal, iron removal and phosphorus and silica removal pretreatments are respectively carried out on acid washing waste liquid and alkaline washing waste liquid, and the acid washing waste liquid and the alkaline washing waste liquid are mixed, neutralized and separated, oily filter residue can be used as fuel, filter cakes can be recycled, and the waste water discharged reaches the standard. The treatment technology can perform smooth treatment to a large amount of acid washing and caustic washing waste liquid of aluminum substrate, can not cause additional pollution, can recycle side products, and solves the technical problem in the field at home and abroad for a long time, and a pilot-scale test shows that the design is reasonable, the technology is easy to be implemented, and the technology has great social, environmental protection and economic benefits.
Owner:申明乐 +1

Preparation method and application of bio-based deodorant

The invention relates to the technical field of road asphalt, in particular to a bio-based deodorant as well as a preparation method and application thereof. The bio-based deodorant is prepared from 40-60 parts of 3, 4-dilinoleyloxy-a-methyl benzene acrolein, 40-60 parts of nano white carbon black, 0.3-0.5 part of an antioxidant and 1-3 parts of polyethylene wax. In the use process, the bio-based deodorant can form a ficus base substance with amino in asphalt; and hydrogen sulfide, mercaptan and the like generated in a stabilizer development process form stable thioacetal, so that toxic gas does not overflow any more, and the use pollution is reduced. The synthesis raw materials are all from natural substances, for example, 3, 4-dihydroxybenzaldehyde is extracted from roots of labiatae plant salvia miltiorrhiza, and linoleic acid can be extracted from various oil crops. The synthesis method is green, environment-friendly and pollution-free; and the synthetic product is degradable and can be degraded by bacterial microorganisms after the pavement reaches the service life. The synthetic raw materials have special plant fragrance, and can relieve the discomfort of operators caused by peculiar smell generated in the asphalt mixing process.
Owner:山东高速集团有限公司创新研究院 +2

A kind of alkali slag foamed concrete sound-absorbing material and its preparation method

The invention discloses an alkali slag foamed concrete sound absorption material and a preparation method thereof. The sound absorption material comprises granulated blast furnace slag, an alkali activator, a foaming agent, a catalyst, a foam stabilizer and a crack arresting agent, wherein the component of an alkali slag gel is blast furnace slag, the alkali activator is one kind or two kinds of combinations of water and sodium hydroxide, the foaming agent is hydrogen peroxide, the catalyst is potassium permanganate, the foam stabilizer is calcium stearate, and the crack arresting agent is one kind or two kinds of combinations of polypropylene fiber and polyvinyl alcohol fiber; in addition, water with a certain weight percentage is added in producing. According to the method, the obtained alkali slag foamed concrete sound absorption material has the advantages of green environmental protection, low cost, and high durability. The preparation method has the advantages of low energy consumption and environmental friendliness.
Owner:CHONGQING UNIV
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