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12414results about How to "Solve pollution" patented technology

Method for comprehensive treatment of oilfield waste

The invention discloses a method for comprehensive treatment of oilfield waste, which is characterized by comprising the process steps of cleaning and separation, ultrasonic separation, tempering and destabilization, oil-water separation, centrifugal separation, mixed curing, air floatation separation, adsorption filtration, flocculating settling, oxidization electrolysis, deep purification and permeable filtration. Thus, the oilfield waste is treated and utilized in a classified manner, so that sump oil is recovered, the solid phase achieves the discharge standard of oilfield sludge treatment design specifications (SY / T6851-2012) or is reutilized for construction material manufacturing, and the liquid phase achieves the sewage comprehensive discharge standard (GB8978-1996) after being subjected to water treatment.
Owner:RUIJIE ENVIRONMENTAL PROTECTION TECH CO LTD

Sea shell micropowder filler and its use

A shell microparticle filler used for high-molecular materials to improve their thermal and mechanical performance is prepared from shell through pulverizing, classifying, high-temp stabilizing and decoloring, and chemical surface modifying. It features its surficial hydrophilic, lipophilic and active properties.
Owner:孙建宁 +1

Harmless disposal method of kitchen garbage

The invention relates to a harmless disposal method of kitchen garbage, which comprises the following steps of: (1) pretreatment: after unloading the kitchen garbage, performing solid-liquid separation, rough crushing, crushing and sorting and performing magnetic separation, and recycling metal substances mixed in the kitchen garbage; (2) hydrothermal hydrolysis: after the pretreatment, adopting the hydrothermal hydrolysis to fully inactivate viruses and bacteria in the kitchen garbage, separating out animal and vegetable fatty oil from the kitchen garbage, and hydrolyzing organic materials at the same time; (3) using the fatty oil obtained in the step (2) as an industrial fatty oil material or further performing deep processing to obtain fatty acid methyl ester or biodiesel; mixing and proportioning the pasty organic materials and then conveying into an anaerobic fermentation system; and conveying large granular organic materials into an aerobic biological fermentation device. The method provided by the invention realizes harmless disposal of the kitchen garbage mainly by the pretreatment and the hydrothermal hydrolysis process, increases the conversion rate of biological energy of the kitchen garbage and increases the economic benefit of kitchen garbage recycling products.
Owner:CHINA URBAN CONSTR DESIGN & RES INST CO LTD +2

Low-temperature ceramic foam material and production method thereof

The invention relates to a production method producing low temperature ceramic foam material by using solid waste slag, which belongs to the technical field of building materials. Combined according to the mass ratio, the components of the low temperature ceramic foam materials consist of 100 portions of cementing materials, 100 to 400 portions of skeletal materials, 13 to 50 portions of activators, 0.2 to 3.0 portions of accessory ingredient, 0.04 to 1.0 portions of foaming agents and 15 to 50 portions of solvents. By the processes of raw material treatment, mixing, casting molding and maintenance, the raw materials with the formulas are made into the low temperature ceramic foam material which takes low temperature ceramic compound reinforced by inorganic waste slag particles as matrix phase and stomas as dispersed phase. Compared with the prior art, the material produced by the method has the advantages of high strength, good thermal and heat insulating property, high waste slag utilization ratio, low cost, environmental protection and saving natural resources, etc., which can be widely used as decoration material and thermal and heat insulating material.
Owner:KUNMING UNIV OF SCI & TECH

Graphene/carbon black thermoplastic resin master batch with high dispersibility and preparation method thereof

The invention discloses a graphene/carbon black thermoplastic resin master batch with high dispersibility and a preparation method thereof. The graphene/carbon black compound in the master batch is formed in an electrostatic self-assembly manner, and comprises 10-50% of graphene, 5-20% of carbon black, 0.5-10% of surfactant, 10-65% of carrier resin and 2-10% of assistant. The preparation method comprises the following steps: (1) compounding and dispersing graphene by adopting the surfactant to control the positive electricity of the graphene surface; (2) forming a stable graphene/carbon black compound from the modified graphene and carbon black with positive electricity through electrostatic incorporation in a self-assembly manner; (3) preparing the graphene/carbon black thermoplastic resin master batch with high dispersibility by matching with a solution blended process, a melt-blending method and an in-situ polymerization method; (4) adding the assistant to extrude and pelletize, so as to prepare the graphene/carbon black/thermoplastic resin master batch particles after processing the master batch. By adopting the obtained master batch, the problems of difficult charging of graphene powder, uneven dispersion, dust pollution, unstable product performance and the like are solved.
Owner:XIAMEN KNANO GRAPHENE TECH CORP

Application of tungsten-based catalyst in lignin catalytic hydrogenation for producing aromatic compound

The invention relates to hydrocracking of lignin, and specifically relates to a method for applying a tungsten-based catalyst to catalyze lignin hydrocracking for producing an aromatic compound. The catalyst comprises a main active component of non-zero-valent tungsten, and a second metal component of a small amount of one or more transition metals selected from zero-valent nickel, cobalt, ruthenium, iridium, palladium, platinum, iron, and copper. According to the method, raw materials such as lignin, biomass hydrolysis residue, lignosulfonate, and alkaline lignin are subject to catalytic hydrogenation under a hydrothermal condition with a temperature of 120 to 450 DEG C and a hydrogen pressure of 1 to 20MPa; the raw materials are cracked into C6-C9 phenolic compounds with high selectivity. A maximal phenol yield reaches 55.6%. Compared to existing technologies, according to the invention, renewable natural biomasses are adopted as raw materials, such that the raw materials are cheap, and have wide sources; inorganic acid and alkali are not required, such the production of a large amount of alkaline solution in traditional lignin catalysis is avoided; the tungsten-based catalyst is cheap; the reaction process is green, and has atom economical characteristics.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Method for recovering rare earth from ionic type rare earth crude ore

The invention discloses a method for recovering rare earth from ionic type rare earth crude ore, which comprises the following steps of: leaching the ionic type rare earth crude ore by taking at least one of magnesium sulfate, magnesium chloride and calcium chloride, instead of most or all ammonium sulfate, ammonium chloride or sodium chloride, as an ore leaching agent to obtain rare earth leachate, performing neutralization and impurity removal, and precipitating rare earth by adopting solution of magnesium hydrogen carbonate or / and calcium bicarbonate to obtain a rare earth carbonate product. In the method, an ammonium bicarbonate precipitator and most or all ammonium sulfate, ammonium chloride and sodium chloride serving as ore leaching agents are eliminated, pollution of ammonia nitrogen wastewater and high-salinity sodium salt wastewater on environment and underground water is greatly reduced or eliminated, and the method is an environment-friendly ionic type rare earth ore mining process.
Owner:GRIREM ADVANCED MATERIALS CO LTD

Method for recovering valuable metals from waste printed circuit board

The invention discloses a method for recovering valuable metals from a waste printed circuit board. The method comprises the following steps: sorting and crushing the printed circuit board, evenly mixing powder containing multiple metal parts with a fluxing agent, and smelting at low temperature for 1-3.5h; adding hot water into smelting products for leaching; evaporating and concentrating filtrate after filtration, and then returning evaporation mother liquor to the water leaching process step; using solution after leaching for swirl electrodeposition of metal silver, and adding 5-25% of HNO3 into filter residue for leaching; filtering the solution after electrodeposition, and adding 1-5 times of the weight of aqua regia into the filter residue for leaching; using the solution after leaching by the aqua regia for the swirl electrodeposition of gold, adding saturated NH4Cl into the solution after the electrodeposition for reaction, then filtering, using ammonium chloroplatinate for refining the filter residue, obtaining sponge platinum, adding methanoic acid into the solution after precipitation, and carrying out reaction for obtaining crude palladium powder. The method can extract copper, nickel, silver, gold, platinum, palladium and other main products and other by-products, realize the maximization of reutilization of value metal resources in the waste printed circuit board and solve the environmental pollution problem; and the adoption of the swirl electrolysis technology can realize low energy consumption, low reagent consumption, short process flow and simple operation.
Owner:HUNAN JIANG YE MECHANICAL & ELECTRICAL TECH CO LTD

Device and method for manufacturing airflow melting electrostatic spinning nano-fiber non-woven fabric

The invention relates to a device and a method for manufacturing an airflow melting electrostatic spinning nano-fiber non-woven fabric. The device for manufacturing the airflow melting electrostatic spinning nano-fiber non-woven fabric comprises a stock hoper, a screw extruder, a filter, a metering pump, a material path, a melt-blown die head, a hot-air pipeline, an air compressor, a heating device, a high voltage electrostatic generator and a receiving device. The material path is made of high thermal conductivity insulating ceramics. The method for manufacturing the nano-fiber non-woven fabric adopts the device disclosed by the invention and comprises the following processing steps: (1) preparing a polymer melt; (2) jetting nano-fibers by using airflow static electricity; and (3) moulding the non-woven fabric. The method for manufacturing the nano-fiber non-woven fabric of the invention adopts airflow-melting electrostatic spinning technology, avoids a problem of pollution of electrostatic spinning solvent, and is novel environment-friendly non-woven fabric manufacturing technology. In the manufacturing method, high voltage electrostatic is directly acted on the melt-blown die head; the melt has high and uniform charge; and simultaneously by utilizing drafting of the airflow, the prepared nano-fiber has the advantages of thin diameter and narrow distribution. The device can meet production requirements by improving the conventional melt-blown manufacturing device, and has low implementation cost and easy industrialization promotion.
Owner:TIANJIN POLYTECHNIC UNIV

Preparation method of water-based polyurethane/nano-silicon dioxide composite emulsion

InactiveCN101845217AEliminate pollutionAddress pollution and damagePolyurea/polyurethane coatingsPrepolymerSolvent
The invention relates to a preparation method of a water-based polyurethane / nano-silicon dioxide composite emulsion, which comprises the following steps: uniformly mixing and stirring ethyl orthosilicate, absolute ethyl alcohol and octadecyl trimethyl ammonium chloride for reacting to obtain nano-silicon dioxide sol; heating polyglycol, and then, adding diisocyanate and dibutyltin dilaurate for reacting to form polyurethane prepolymer; adding a hydrophilic chain extender and a cross-linking agent into the polyurethane prepolymer for carrying out chain extending reaction, adding organic base for regulating the pH value to be 7.0-8.0, and then, adding deionized water to obtain 30% of water-based polyurethane emulsion; and mixing the nano-silicon dioxide sol and the water-based polyurethane emulsion in a water bath, and carrying out ultrasonic treatment to obtain the water-based polyurethane / nano-silicon dioxide composite emulsion. Harmful solvents and emulsifying agents do not need to be added in the preparation process of the invention, thereby solving the problems of polluting environment and injuring operators.
Owner:SHAANXI UNIV OF SCI & TECH

Fruity ice cream and its production process

InactiveCN101019594ADifferent componentsUnique tasteFrozen sweetsFood preparationNutrientChemistry
The present invention relates to fruity ice cream and its production process. The fruity ice cream has fruit shell in 0.5-2.5 thickness, top cover and inside soft ice cream comprising fruit juice and ice cream in the same weight ratio. It is produced through the following steps: making the shell with fruit, making the top cover, making fruit juice, making ice cream, storing and transporting, and making fruity ice cream. The present invention makes it possible to ingest the nutrients of fruit while eating ice cream, and the fruity ice cream has different components, unique flavors and excellent functions of quenching thirst and eliminating summer heat.
Owner:陈鹏

Energy-conserving textile fabric washing device

The invention discloses an energy-saving textile cloth cleaning device, which comprises a casing, the inner cavity of the casing is sequentially provided with a cleaning chamber, a drying chamber and a sterilization chamber from left to right, and a fixed frame on the left side of the casing passes through The fixed shaft is fixedly connected with the feed roller, the fixed frame on the right side of the housing is fixedly connected with the discharge roller through the fixed shaft, the upper left side of the housing is provided with a feed inlet, and the upper right side of the housing is provided with a The discharge port is fixedly connected with a water storage tank on the upper surface of the shell, and the bottom of the left side of the water storage tank is fixedly connected with a water delivery pipe, and a booster pump is fixedly connected with the water delivery pipe. The invention provides an energy-saving textile cloth cleaning device, which has the advantages of thoroughly cleaning and disinfecting the cloth, is effective in recycling the cleaning liquid to prevent water pollution, and has the advantage of effectively utilizing the heat in the drying chamber, solving the problem of The problems of waste of energy and incomplete cleaning of existing textile fabrics.
Owner:秦泽坤

Electroplating wastewater zero-discharge or low-discharge handling method

The invention provides a processing method for zero draining or low draining of electroplating wastewater. The method adopts an integrative technique, such as barrier concentration, barrier separation, ion exchange, and ultraviolet light catalytic oxidation, etc. The following steps are adopted: the pretreatment of the electroplating wastewater; the treatment for the three types of wastewater including pickling wastewater, wastewater containing cyanide and passivating and electroplating rinsing composite wastewater; and the treatment for the wastewater in an acid-soluble pool. Compared with the wastewater in an integrative electroplating plant with universal generic multi-plating species, only the prior water separation method with no need to control the troubled water strictly can realize : first, zero draining of the electroplating wastewater is performed; second, when operating in the low energy consumption way, 65 to 85 percent of water recovery is realized, the left wastewater which can not be recovered is discharged when reaching the primary discharge standard of National Standard; third, the processing cost is reduced; fourth, the metallic ion in the wastewater can be effectively recovered and utilized, at the same time, the benefit disinvestment cost is produced; fifth, the amount for causing solid waste is reduced; sixth, the invention is advantageous to realize the automatic control and the operation.
Owner:SURFACE & INTERFACE CHEM ENG TECH RES CENT NANJING UNIV +1

Wind-solar power generation and hydrogen-production hydrogen-storage system and operation control method thereof

The invention relates to a wind-solar power generation and hydrogen-production hydrogen-storage system and an operation control method thereof, and relates to the technical field of new energy wind-solar power generation and hydrogen production. According to the invention, a rectifier at a fan side of a wind power farm is connected with a grid side inverter; a DC (Direct Current) bus is connectedwith a supercapacitor of a DC / DC convertor; the rear surface of the supercapacitor is connected with a hydrogen production and hydrogen storage system; a photovoltaic system is connected with the DC bus in front of the supercapacitor by the DC / DC convertor and is used as a power compensation unit of the wind power farm; the wind-solar power generation and hydrogen-production hydrogen-storage system further comprises a power coordination control module and a monitoring module; and problems of poor peak regulation capacity, unsmooth hydrogen production, short service life of equipment and the like of a wind-solar power generation and hydrogen-production hydrogen-storage system are mainly solved. The wind-solar power generation and hydrogen-production hydrogen-storage system has the characteristics that the system is high in peak regulation capacity; the requirement of a load evening peak can be met; smooth hydrogen production can be ensured; the service life of the equipment is prolonged; flexible grid connection can be implemented in the premise of ensuring purity of produced hydrogen; and an energy utilization rate is high.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method for producing baking-free bricks by using phosphorous gypsum based cementitious material to solidify yellow phosphorous slags

The invention provides a method for producing baking-free bricks by using phosphorous gypsum based cementitious material to solidify yellow phosphorous slags. 1) The raw materials and formula of the invention are as follows: (1) the phosphorous gypsum cementitious material: 40-60 parts of phosphorous gypsum, 0-30 parts of yellow phosphorous slags, 0-30 parts of pulverized fuel ash, 0-5 parts of blast furnace slag, 10-15 parts of calcined lime, and 0-10 parts of carbide slag; (2) the mateirals of the baking-free brick green bodies: 100 parts of phosphorous gypsum cementitious material, 150-300parts of yellow phosphorous slags raw materials, 2-4 parts of activator, 0.2-1 part of auxiliary agent, and 10-40 parts of water. 2) The preparation method: the baking-free bricks are produced throughthe steps of treating raw materials, mixing the solution with additive, preparing brick blanks and moulding and conserving. In the production process of the invention, no organic matter is added, thus completely avoiding the pollution problems of toxic substance caused by degradation of organic materials, and the release of additive and volatilization of residues, and having the advantages of lowcost, good physical property, high production efficiency, saving of energy consumption and non environmental pollution.
Owner:KUNMING UNIV OF SCI & TECH
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