118results about How to "Improve the effect of chemical reactions" patented technology

A method and apparatus for activating and dissociating gases involves generating an activated gas with a plasma located in a chamber. A downstream gas input is positioned relative to an output of the chamber to enable the activated gas to facilitate dissociation of a downstream gas introduced by the gas input, wherein the dissociated downstream gas does not substantially interact with an interior surface of the chamber.

The invention relates to a method for producing alumina by utilization of high-aluminum alumyte, which belongs to the technical field of metallurgy. The method comprises: firstly, grinding alumyte ores, and adopting a fluidized bed to perform roasting and desulfurization pretreatment; secondly, treating obtained roasted ores by a Bayer process, and obtaining Al2O3 products after stripping, crystal seed decomposition and calcining treatment; and thirdly, introducing roasted tail gas generated by roasting into red mud under the stirring condition, and absorbing SO2 in the tail gas. The method has low stripping temperature, can effectively remove sulfur element in the ores, has great significance in developing and using the ores for alumina industrial production practice, uses the red mud during industrial production of alumina as an absorbent of the low concentration SO2 tail gas during roasting, and realizes dealkalization and modification treatment and comprehensive utilization of the red mud.

A stabilized, chemically reactive, metallic nano-material effective for degradation of chlorinated organic compounds in soils, sediments and groundwater. The nano-material is composed of a magnetic metal nanoparticle and a carbohydrate stabilizer bound to the nanoparticle. The preferred metal nanoparticle is iron and the preferred carbohydrate stabilizer is either a starch or a water soluble cellulose such as sodium carboxymethyl cellulose. The nanoparticle may be either mono-metallic, bi-metallic or multi-metallic in nature, but is preferably bi-metallic wherein it is coated with a secondary catalytic metal coating, preferably palladium. A method of making the metallic nano-material is further disclosed wherein a solution of the metal nanoparticle and carbohydrate stabilizer is prepared, and the nanoparticle is then reduced under inert conditions. A process for reductive dechlorination of chlorinated organic compounds is also disclosed wherein the reduced magnetic metal nanoparticle is prepared, and then contacted with a chlorinated organic compound to dechlorinate the compound. Preferably, the nano-material is injected into a site such as soil subsurface or groundwater contaminated with a chlorinated organic compound to provide in-situ dechlorination.

The present invention provides a fuel composition comprising a fuel and a film-forming additive wherein the fuel comprises diesel and a fuel alcohol and wherein the film-forming additive is present in the fuel composition in an amount of less than 0.1 wt %.

The invention relates to the field of synthetic production of cosmetics and aims to provide strippable water-based non-irritation nail polish. The strippable water-based non-irritation nail polish comprises deionized water, water-soluble modified polyurethane, chitosan, a wetting agent, a dispersing agent, an antifoaming agent, a rheological agent, water-soluble environment-friendly color paste and other additives. Water is used as a solvent, and no or only a small amount of absolute ethyl alcohol is added to be used as an additive, so that the nail polish has no paint smell of traditional oil-soluble nail polish or alcohol smell of alcohol-soluble nail polish and contains no alkali-associative thickener, and the whole nail polish system is neutral and causes no damage to the skin, nails and clothes.

The invention provides a preparation method of metallurgical biomass semi-coke. The preparation method comprises the following steps of: uniformly mixing 55-70% of inferior coal, 25-40% of biomass charcoal powder and 4-8% of binding agent, pressing for molding the uniform mixture, and carrying out destructive distillation at 650-800 DEG C for 10-15 hours to obtain the semi-coke for sintering and blast furnace jetting. The biomass semi-coke provided by the invention has the advantages of both the biomass charcoal and the semi-coke, and is strong in chemical reactivity, low in sulfur content, capable of reducing the emission of the greenhouse gas CO2 and the harmful gas SO2, wide in carbon raw materials, and low in process energy consumption; the heat value of the produced biomass semi-coke is high and can reach 28.8MJ/Kg on average; therefore, the cost of the raw materials can be reduced, the pollution caused by the random discard or combustion of the biomass can be eliminated.

The invention provides a method for preparing modified nanosilicon dioxide. Firstly, nanosilicon dioxide is reunited as little as possible by adding chitosan during the nucleation process, thereby obtaining modified nanosilicon dioxide which is uniform, steady and excellent in dispersivity. Secondly, ethylene diamine tetraacetic acid and the nanosilicon dioxide react to enable the surface of the ethylene diamine tetraacetic acid to modify a certain amount of amino. Thirdly, silanol and aminosilylation are arranged on the outer layer of the nanosilicon dioxide, added stannous chloride enables the silanol and the aminosilylation to have excellent activities to epoxy groups, speeds up reaction progress, and greatly improves modified grafting ratio of surface of the nanosilicon dioxide.

The present invention provides a valve which makes it possible to reduce the diameter of the vacuum exhaustion pipings for making the facility for the vacuum exhaustion system small, as a result lowering the costs, and making the vacuum exhaustion time short, and also which can prevent the corrosions, cloggings, and seal leakages inside the piping system caused by the accumulation of substances produced by the decomposition of the gas. Specifically, the aluminum passivation is applied on the piping parts, i.e. the valve and others, used in the vacuum exhaustion system to inhibit the gas decomposition caused by the temperature rise at the time of the baking so that components for the reduction in the diameter size in the vacuum exhaustion system are provided. The corrosions, cloggings and seat leakages caused by the gas decomposition are prevented.

Methods, systems, and compounds for degrading chlorinated compounds in water. A facile aqueous-based surface treatment of zero-valent iron is provided to increase the reactivity of a zero-valent iron material for degrading chlorinated compounds in the water without the use of a noble metal catalyst. Such a facile aqueous-based surface treatment can be implemented as a surface sulfidation pre-treatment of iron to increase its reactivity towards chlorinated contaminants in water. The disclosed facile aqueous-based surface treatment increases reactivity utilizing sulfur compounds for use in the degradation of the chlorinated compounds in the water.

Disclosed is a method for producing a glass substrate, which involves a first polishing step and a second polishing step both for polishing the surface of the glass substrate with a polishing solution containing a polishing agent. The method is characterized by additionally involving a heating step for heating the glass substrate, wherein the heating step is carried out after the first polishing step and before the second polishing step.

The invention discloses a production process for formaldehyde-free multiply plywood. The production process mainly includes the following steps of cold plasma processing, double-sided gluing of single boards, assembly, hot-press molding, contact calibrating, gluing and veneering, veneer hot pressing, edge sawing, sanding and finished product obtaining. According to the production process, under a high-temperature hot-pressing action of the boards, after isocyanate modified soy protein adhesive is unblocked, the activity of -NCO radials of isocyanate is recovered, and the -NCO radials carry out a cross-linking reaction with degraded soy protein and wood, so that a uniform space mesh structure is formed, the cohesion strength is improved, formation of stable chemical bonds on the surface of the soy protein and the surface of the wood can be facilitated, and thus water resistance of the soy protein based adhesive is improved.

The invention provides a distribution type high-frequency high-voltage power supply device used for driving DBD plasma source groups, and belongs to the technical field of special power supply equipment and gas discharge advanced oxidation technology application. According to the device, a full-bridge IGBT power conversion technology or a semi-bridge IGBT power conversion technology is adopted for design of an IGBT high-frequency power conversion controller, high-frequency power of 5-20kHz is input to a power output busbar, and then several to hundreds of independent high-frequency high-voltage power outputs are obtained due to the fact that several to hundreds of high-impedance small high-frequency high-voltage transformers are distributed, so that the distribution type high-frequency high-voltage power supply device is formed to drive atmosphere DBD plasma source groups of different types and different kinds of discharge power. Therefore, inherent resonance frequency of an atmosphere DBD discharge system is improved, effects of a chemical reaction of atmosphere DBD discharge plasmas are improved, and a novel technical device is provided for large-scale application of the advanced oxidation technology.

The invention discloses a compounding activation coal ash latent active and improving coal ash quality method in the building material domain, which is characterized by the following: using II, III degree coal ash for raw material; adding in 2.0-4.0% calcium sulfate, 3.0-4.0% alum stone, 5.0-10.0% industrial residue(such as steel scoria, slag), 1-2% inoculating crystal and a little disperser in coal ash weight; putting the above material and raw condition coal ash in ball grinder to jevigate; filling coal ash with 0.045 mum square hole screen in stocking yard by separation equipment; grinding the coal ash with larger 0.045 mum square hole screen until the fineness of coal ash (0.045 mum) is smaller than 10%. The method can make the low-grade coal ash to become I-grade or high grade coal ash, which meet the demand of the market.

The invention discloses a method for synthesizing substituted pyrrole, comprising the following steps: carrying out addition reaction on a catalyst and 1,3-conjugate diyne in the primary organic amine in an inert atmosphere to obtain the substituted pyrrole after the reaction is finished. In the method, the catalyst is at least one selected from CuC1, CuBr and CuI; the primary amine compound is aliphatic organic amine or aromatic organic amine; the 1,3-conjugate diyne is aromatic 1, 3-conjugate diyne or aliphatic 1, 3-conjugate diyne or 1,3-conjugate diyne crossed by the above two. The method of the invention adopts low-price, safe, easily obtained and simple cuprous compound as a catalyst, and has simple and moderate reaction condition; and the catalyst system shows that the substituted pyrrole is efficiently and high selectively synthesized by one-step method by the addition reaction of the 1,3-conjugate diyne and the primary amine.

The invention discloses a preparation method for a biodegradable tissue engineering skin stent. The method comprises the following steps: adding carboxylation chitosan and sodium hyaluronate as auxiliary raw materials and adding NaCl as a pore-foaming agent into an aqueous solution of human collagen, stirring till fully dissolving all the added materials, adding glutamine transaminase as a bio-enzyme cross-linking agent for enzymatic cross-linking, and then refrigerating, performing vacuum freeze drying, removing salt and sterilizing by irradiating with Co60, thereby acquiring a degradable three-dimensional tissue engineering skin stent for repairing skin. The skin stent has high biocompatibility and excellent pore structure, is suitable for cell growth and can be used for treating full-thickness defect and scald.

The invention discloses a method for manufacturing semicoke for sintering. A mixture comprises the following raw materials: 85%-90% of fault coal, 4%-10% of high-iron and low-silicon iron ore powder and 4%-8% of a binder. The method comprises the following steps: pressing and molding the mixture after evenly mixing; carrying out destructive distillation at 700-850 DEG C for 7-15 hours; and then carrying out dense-medium cleaning under the condition that the specific gravity of the dense medium is 1.3-1.4, so as to obtain semicoke for sintering. The semicoke produced by the method has the advantages of ferrocoke and semicoke, and is strong in chemical reactivity; the semicoke and coke powder are used in a mixed manner, so that the granularity structure of sintering fuel can be optimized, and the breathability of a sintering bed is improved; the used raw materials are fault coal, brown coal and high-volatile bituminous coal, so that the application range of metallurgical industry fuel is expanded, and the cost of the sintering fuel is reduced.

The invention discloses a concrete glue reducing agent and belongs to the technical field of concrete admixtures. The concrete glue reducing agent is composed of the following components in percentageby weight: 20%-45% of organic amine, 15%-30% of low-molecular-weight polyethylene glycol, 0.01%-0.1% of a bubble adjusting component and the balance of water. The concrete glue reducing agent disclosed by the invention is non-toxic, simple in process, pollution-free, low in energy consumption and easy for industrial production; and the peaceability of concrete can be effectively improved, the slurry enrichment rate of cement-based slurry can be improved, the chemical reaction effect of a cement-based gel material in the concrete can be improved, and the cost of the concrete can be saved.

The invention discloses biocharcoal-based slow release fertilizer. The biocharcoal-based slow release fertilizer is prepared from biocharcoal and chemical fertilizer with the mass ratio being 20:(5 to10). The biocharcoal-based slow release fertilizer disclosed by the invention has the beneficial effects that agricultural and forest wastes such as straws with wide distribution, large yield and lowcost are adopted as biomass, has rich pore channels, is easily decomposed, is not deteriorated after being absorbed, is wear-resistant, and also has excellent adsorbing and ion-exchange properties, the fertility, the structure and microorganisms and the like of soil can be effectively improved, and the soil quality can be improved; shown from the cumulative released amount of nitrogen of the biocharcoal-based slow release fertilizer in water, the cumulative released amount of the nitrogen in 480 hours is about 80%, i.e., the cumulative released amount of nitrogen nutrients in 20 days is 80%.The invention also discloses a preparation method of the biocharcoal-based slow release fertilizer. The preparation method adopts a hydrothermal method to prepare the biocharcoal-based slow release fertilizer, the technology is manure, the operation is convenient, simple and easy, low cost, less investment and low energy consumption are achieved, and an economic and feasible technical means is provided for large-scale application of the biocharcoal-based slow release fertilizer.