4790 results about "Potassium carbonate" patented technology

The invention provides a method for preparing lithium cobaltate by directly using an invalid lithium ion battery. The method comprises the following steps: crushing the invalid lithium ion battery or scraps generated when a lithium cobaltate battery is produced by a mechanical crusher at normal temperature; adding water and one or more of acetic acid, sulfuric acid, hydrochloric acid or nitric acid to produce mixed aqueous solution of the battery scraps and acid; filling the mixed aqueous solution into a hermetic pressure reactor, and controlling the temperature in the reactor to be between 50 and 150 DEG C; introducing or adding one leaching additive of sulfur dioxide or hydrogen, or adding hydrazine hydrate; stirring and leaching, cooling, and filtering; adding one precipitator of sodium carbonate, potassium carbonate and ammonium carbonate, or adding composite precipitator consisting of one of the sodium carbonate, the potassium carbonate and the ammonium carbonate and one of sodium hydroxide and potassium hydroxide to obtain mixture of lithium carbonate, cobalt carbonate and cobalt hydroxide; drying and calcining at high temperature to produce a lithium cobaltate product. The method is particularly suitable for the treatment scale of medium-sized and small enterprises, and is an effective method for directly materializing cobalt secondary resources.

A contaminant-removal filter for removing acidic contaminants from a gas stream, such as air. The filter has a porous or fibrous body that includes a plurality of passages extending from a first, inlet face to a second, outlet face, the passages providing flow paths. The body has a base or alkaline material, such as potassium carbonate, and a promoter, such as potassium iodide, impregnated throughout the substrate. The filter is free of any humectants.

A method for producing sintered pellets and sintered pellets produced therefrom including mixing a dopant with water and kaolin clay to form substantially round and spherical green pellets and sintering the pellets to form a proppant. The dopant is selected from the group consisting of potassium carbonate, potassium sulfate, potassium chloride, mica, kalsilite, and combinations thereof.

Methods and systems for C02 separation for low emission power generation in combined-cycle power plants are provided. One system includes a gas turbine system that stoichiometrically combusts a fuel and an oxidant in the presence of a compressed recycle stream to provide mechanical power and a gaseous exhaust. The compressed recycle stream acts as a diluent to moderate the temperature of the combustion process. A boost compressor can boost the pressure of the gaseous exhaust before being compressed into the compressed recycle stream. A purge stream is tapped off from the compressed recycle stream and directed to a C02 separator configured to absorb C02 from the purge stream using a potassium carbonate solvent.

Water containing dissolved salts, such as calcium sulfate, calcium chloride, magnesium sulfate, magnesium chloride, sodium carbonate, sodium chloride, sodium sulfate, calcium bicarbonate, and mixtures thereof, is treated to reduce the concentration of those salts. About 0.1 to about 60 g / L of sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, calcium hydroxide, calcium carbonate, aluminum hydroxide, aluminum sulfate, aluminum potassium sulfate, and mixtures thereof is added to the water, whereby a precipitate forms in the water. The precipitate is separated from said water and the water is desalinated using reverse osmosis, flash evaporation, or another method. The process is preferably performed by first adding calcium oxide or calcium hydroxide, separating the precipitate that forms, then adding sodium hydroxide and sodium carbonate to form a second precipitate.

The support removal apparatus comprising in combination a retention tank having a manifold assembly comprising a plurality of nozzle heads in hydraulic communication with the discharge side of a pump, collectively configured for agitating an aqueous cleaning solution comprised of sodium or potassium hydroxide, sodium or potassium carbonate, and water; a heating element mounted within the retention tank for heating the aqueous cleaning solution to a predetermined temperature set point; a basket strainer mounted within the retention tank in hydraulic communication with the intake side of the pump to mitigate passage of small rapid prototype parts and residual support material therethrough and into the pump and manifold assembly; a work surface mounted atop the retention tank and having a movable lid fitted with a basket for containing small rapid prototype parts; a thermocouple for maintaining the temperature within a tolerable range for optimum removal of support material; a level indicator to ensure adequate solution level in the retention tank for operability of the pump and heating element; a cabinet having interface controller mounted on an exterior panel thereof for setting timer and heat functions; and a microprocessor having capabilities for making minute adjustments to the heating element via feedback from the thermocouple and controlling operation of the pump and heating element for a pre-set time interval.

The invention provides an environment-friendly silt curing agent, which is manufactured through the following steps: one or two among fly ash, calcium sulfate, sodium sulfate, sodium carbonate and potassium carbonate, one or two among slag, slag combination, potassium hydroxide, calcium oxide, sodium silicate or silicon dioxide, one or two among carbide slag, lime or gypsum, as well as one or two among triethanol amine surfactant, calcium lignosulfonate or sodium lignosulfonate form a plurality of optimal compound formulations according to respective attributes, are optimized, compounded, ground till the Brinell specific surface areas are between 300 and 900 m2 / kg respectively and then mixed, wherein particle sizes are between 0.00040 and 0.5 mm. As a large amount of waste is utilized, the curing agent saves raw materials, solves the problems about waste discharge and environmental pollution, controls waste through waste, and has important significance to environmental protection. The invention aims to provide the environment-friendly silt curing agent which has strong adaptability to a plurality of types of silt and soil, is good in curing effect, good in durability after curing and capable of utilizing industrial waste, and can be widely applied to fill engineering, embanking or embankment reinforcement engineering, road engineering and other fields.

The invention discloses a composite heavy metal polluted soil conditioner as well as application and an application method thereof. The soil conditioner comprises the following components: plant ash, calcium magnesium phosphate, quicklime, zeolite and organic fertilizers at a weight ratio of (0.3-1.1):(0.1-1.2):(0.4-2.1):(0.1-0.6):(0.008-0.06):(0.4-1.2). Through inorganic components such as quicklime, calcium magnesium phosphate and phosphate in hydroxyapatite as well as potassium carbonate in the plant ash, the soil conditioner can be used for fixing heavy metals in polluted soil and improving the fertility of the polluted soil in combination with organic manures such as the plant ash and the organic fertilizers so as to continuously intensify the restoration of the polluted soil, has the advantages of relatively-high stability, good environmental friendliness and low cost, can be used for inactivating and restoring various heavy metal polluted soil, especially has a good restoration effect on soil pollution caused by waste slag discharged by industrial and mining enterprises, can be used for realizing the treatment goal without generating secondary pollution, and is liable to realize large-area popularization.

The invention discloses a preparation method of 1-(4-(4-(1H-1,2,4-triazolyl-1-yl)phenoxy)phenyl)-1H-1,2,4-triazole. The organic compound is prepared by heating 4,4'-dibromodiphenyl ether, triazole, potassium carbonate and copper oxide by a one-pot process. The preparation method has the characteristics of simple technological operation, low production cost and low environmental pollution, and is suitable for large-scale industrial production. The invention also discloses application of the 1-(4-(4-(1H-1,2,4-triazolyl-1-yl)phenoxy)phenyl)-1H-1,2,4-triazole in photoelectric materials.

The invention relates to a photo-induced reversible self-repair polyurethane film and a preparation method and a repair method thereof. The polyurethane film mainly comprises 10 to 40 parts of phenolic hydroxyl coumarin derivative, 10 to 50 parts of alkyl bromal compound, 10 to 40 parts of polyisocyanate, and 10 to 30 parts of polyether polyol or polyester polyol. The preparation method comprises the following steps of: generating phenolic hydroxyl coumarin by using the phenolic hydroxyl coumarin derivative and the alkyl bromal compound under the action of absolute potassium carbonate; and reacting the phenolic hydroxyl coumarin, the polyisocyanate and the polyether polyol or the polyester polyol to obtain polyurethane solution, and performing cross linking under the irradiation of ultraviolet with wavelength of 350 nanometers after the film is formed to obtain the polyurethane film. The damaged surface is irradiated through the ultraviolet with wavelength of 254 to 350 nanometers, so that the reduced coumarin monomers are subjected to dimer cross linking reaction again and the purpose of repairing cracks is fulfilled. Compared with the prior art, the polyurethane film has the characteristics of good film forming property and high transparency; and the repair process is simple and has low cost.

The invention relates to a method for recycling titanium dioxide in a waste SCR (Selective Catalytic Reduction) denitration catalyst. The method comprises the following steps of: firstly removing dust from the waste denitration catalyst, pulverizing, then adding concentrated sulfuric acid so as to carry out acid hydrolysis on the waste denitration catalyst to obtain a concentrated titanyl sulfate solution, and adding water for dilution; adding a non-ionic emulsifier serving as a flocculating agent and a sulfonate surface active agent or a polycarboxylate surface active agent as a coagulant aid, and adding water-solubility methyl silicone oil; pumping into a plate-and-frame filter press for filter pressing, carrying out vacuum concentration on filtrate, then heating to 90 DEG C to 98 DEG C, and maintaining for 5.5 hours so as to hydrolyze the filtrate; cooling a hydrolysis product to 40 DEG C, and carrying out vacuum filtration so as to sediment out metatitanic acid; rinsing with sand-filtered water and deionized water, and adding potassium carbonate or phosphorous acid to obtain metatitanic acid filter cakes; and drying the filter cakes, calcining at 500-800 DEG C, and then pulverizing to obtain a titanium dioxide finished product. The method has the advantages of being capable of reducing disposal amount of the waste denitration catalyst, recycling the waste denitration catalyst and reducing the production cost of the waste denitration catalyst.

A method of preparing a crimped tow of cellulose acetate filaments comprising the steps of: a) providing cellulose acetate dope b) forming filaments (23) from the dope c) applying at least one additive to the filaments d) crimping the filaments to form a crimped tow wherein the at least one additive is capable of removing a component from cigarette smoke. Preferably, the component is a Hoffmann analyte. The additive may comprise a solution, liquid, emulsion or particulate material or combinations thereof. Preferably, the additive comprises an acidic compound or an alkaline compound. The additive may comprise malic acid, potassium carbonate, citric acid, tartaric acid, lactic acid, ascorbic acid, polyethyleneimine, cyclodextrin, sodium hydroxide, sulphamic acid, sodium sulphamate, polyvinyl acetate and carboxylated acrylate, carbon, silica, zeolite, clay, alumina, metal, molecular sieves or an ion exchange resin. The product tow can be processed on standard equipment to make efficient filter rods from which cigarette filter tips can be made which give significantly increased and selective retention of key smoke constituents.

The invention relates to a synthetic process of a chemical substance, and particularly relates to a synthetic method for synthesizing (E)-2-[2-(6-chloro pyrimidine-4-yloxy)phenyl]-3-methoxy methacrylate and azoxystrobin; the method comprises the following steps: mixing a raw material of 3-(alpha-methoxy)methylene benzofuran-2-(3H)-ketone and potassium carbonate in a toluene solvent, cooling to 0-10 DEG C, adding sodium methoxide, reacting for 0.4-0.6 hours; adding 4,6-dichloropyrimidine and a catalyst of DABCO, reacting for 1-2 hours, filtering to remove inorganic salts, washing the filtrate with water, performing distillation to recover toluene; adding a catalyst of potassium bisulfate into the distillation residues of the above reaction, heating to 132-145 DEG C in a reduced-pressure condition for reaction; directly adding salicylonitrile to synthesize azoxystrobin or performing toluene dissolution, water washing, solvent recovery, recrystallization and filtration to obtain an intermediate. The production and synthesis of (E)-2-[2-(6-chloro pyrimidine-4-yloxy)phenyl]-3-methoxy methacrylate by the production process of the invention has high yield, and simple operations, and the used raw materials and processes are routine reagents and methods.

The invention relates to a preparation method of herbicide dicamba. The preparation method includes: (1) liquid potassium hydroxide and 2, 5-dichlorophenol are reacted according to molar ratio of 0.95:1-1:1 to obtain 2, 5-dichlorophenol potassium; (2) at the presence of anhydrous potassium carbonate and catalyst, the 2, 5-dichlorophenol potassium obtained in the step (1) is reacted with CO2 to generate 3, 6-dichlorosalicylic acid, pressure of CO2 is controlled to be 4-6MPa, reaction temperature ranges from 100 DEG C to 160 DEG C, and molar ratio of anhydrous potassium carbonate and 2, 5-dichlorophenol potassium is 1-2:1; and (3) in alkaline condition, at the temperature of 70-100 DEG C, the 3, 6-dichlorosalicylic acid obtained in the step (2) and chloromethane are reacted under the action of the catalyst through a tube fixed-bed reactor according to molar ratio 1:1-3.5, saponification and acidification are performed to obtain 3, 6-dichloro-2-methoxysalicylic acid, namely the dicamba. The process is high in reaction yield, simple in reaction condition, good in product quality, small in three wastes and low in energy consumption.

An axial substituted phthalocyanine complex, its manufacture and applications in optical dynamics therapy are disclosed. It is prepared by: refluxing silicon dichloride phthalocyanine and monoaluminium phthalocyanine with substitutes contained appropriate compounds and sodium hydrogen or potassium carbonate in appropriate solvent for a certain time, washing with solvent, separating through liquid chromatography, and purifying to obtain products. The complex is prepared simply and quickly, uneasy to be agglomerated, strong optical sensitive, valuble as a drug in optical dynamic treatment. Its structure is clear without isomer.

A Fe-Mn catalyst with high activity and stability for Fischer-Tropsch synthesis contains Fe, Mn, Ca, K and SiO2. It is prepared through codepositing of the assistant containing Fe, Mn and Ca, silicon sol and ammonia water, feeding the deposit slurry and the catalyst slurry prepared from potassium carbonate solution in drier, drying and calcining.

The present invention provides a chemically stable pharmaceutical preparation of a benzimidazole type compound. That is, the present invention relates to a composition comprising at least one substance selected from sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, aminoalkyl methaacrylate copolymer E, arginine aspartate, hydroxypropyl cellulose and crospovidone incorporated into a benzimidazole type compound or an alkali metal salt thereof.

Novel solvents and methods of use for the removal of CO2 from flue gas, natural gas, hydrogen gas, synthesis gas, and other process and waste gas streams are provided. The solvent contains an alkali salt such as potassium carbonate and a polyamine such as piperazine (PZ) where the polyamine concentration is at least 1.5 equivalents / Kg H2O and the alkali salt concentration is at least 0.5 equivalents / Kg H2O. The preferred alkali salt / polyamine ratio is from approximately 1:2 to 2:1, and no additional alcohol is required for solubilizng the PZ. This chemical solvent and method of use provides efficient and effective removal of CO2 from gaseous streams and other sources.

The invention discloses a bunker coal environment-friendly synergist, which comprises the following components by weight percent: 1 to 10 percent of ammonium bicarbonate, 1 to 8 percent of sodium bicarbonate, 1 to 10 percent of sodium carbonate, 1 to 5 percent of sodium nitrate, 1 to 10 percent of potassium nitrate, 1 to 15 percent of calcium carbonate, 1 to 10 percent of sodium hydroxide, 2 to 10 percent of calcium hydroxide, 1 to 10 percent of potassium permanganate, 3 to 15 percent of potassium chloride, 10 to 35 percent of sodium chloride, 1 to 10 percent of ammonium chloride, 1 to 15 percent of calcium chloride, 1 to 10 percent of borax, 1 to 10 percent of macaroni, 1 to 5 percent of potassium carbonate, 1 to 5 percent of calcium nitrate, 1 to 5 percent of iron oxide, and the balance being micro turpentine, sulfur and paraffin wax. The bunker coal environment-friendly synergist makes flame of combustion be more rampant and denser, the furnace temperature rise to a higher level, the hearth be brighter and cleaner and tail gas be cleaner.

The invention relates to a preparation method of azilsartan, comprising the following steps of: (1) preparing ethoxybenzimidazole-7-methyl carboxylate; (2) preparing 2-cyan-4'-bromomethyl biphenyl; (3) dissolving the ethoxybenzimidazole-7-methyl carboxylate and the 2-cyan-4'-bromomethyl biphenyl into ethanol; adding potassium carbonate to react to obtain 1-[(2'-cyan diphenyl-4-yl)methyl]-2-ethoxybenzimidazole-7-methyl carboxylate; (4) suspending the 1-[(2'-cyan diphenyl-4-yl)methyl]-2-ethoxybenzimidazole-7-methyl carboxylate in water; adding hydroxylamine hydrochloride, sodium hydroxide and tetrabutylammonium fluoride; heating and reflowing, and then cooling; adding the sodium hydroxide and ethyl chloroformate, heating and reflowing to obtain azilsartan methyl ester; and (5) hydrolyzing the azilsartan methyl ester to obtain a product. The preparation method of the azilsartan, disclosed by the invention, has the advantages of being short in process route, high in yield, and safe and reliable; and the purity of the azilsartan obtained by using the method is high.

The invention relates to a method for preparing activated carbon with humic acid as a raw material and an application of the activated carbon. The method comprises the steps of mixing industrial humic acid with an activating agent which is potassium hydroxide, sodium hydroxide, zinc chloride, potassium carbonate or phosphoric acid uniformly to react under inert atmosphere protection for 1-5 hours; then cooling the product, washing the product in an acid solution until the pH value is 6-7 and drying the product, thus obtaining the activated carbon. The method is convenient to operate, is relatively low in energy consumption and is suitable for large-scale industrial production. The humic acid porous activated carbon material obtained by the method has a rich porous structure and a relatively big specific surface area, is used for preparing water purifiers or electrode materials of supercapacitors, and has methylene blue dye adsorption value of 600mg / g. Besides, the humic acid porous activated carbon material is used as the electrode material of a supercapacitor to assemble a high-performance supercapacitor. The specific capacitance of the activated carbon single electrode is 351Fg<-1>. Various test results show that the activated carbon is microporous-mesoporous composite carbon and has specific surface area of about 3200m<2> / g, the pore size distribution of the activated carbon is 1-5nm, and the pore volume of the activated carbon is about 2cm<3> / g.

The present invention is one kind of neutral borosilicate glass for medicine production. The neutral borosilicate glass has recipe comprising quartz sand 168-178 Kg, feldspar powder 14.7-18.7 Kg, borax pentahydrate 49-51 Kg, sodium carbonate 8-12 Kg, barium carbonate 8.6-9.4 Kg, sodium nitrate 0.4-0.6 Kg, calcite 1-2 Kg, fluorite 0-4 Kg, potassium carbonate 8.5-9.5 Kg, salt 0.8-1.6 Kg, cerium oxide 0.5-0.9 Kg and cullet 120 Kg. It has high chemical stability, high hydrolysis stability, few alkali metal volatilizations, simple production process and low cost.

The invention discloses a method for preparing poly(arylene ether nitrile) resin powder, and belongs to the technical field of high polymer materials. 2,6-dichlorobenzonitrile and aromatic dihydric phenol are taken as raw materials, 1-methyl-2-Pyrrolidinone is taken as a solvent, anhydrous potassium carbonate or anhydrous sodium carbonate is taken as a catalyst, and methylbenzene or dimethylbenzene is taken as a dehydrating agent; and the method comprises the following steps of: performing reflux reaction at the temperature of between 130 and 160 DEG C for 2 to 4 hours in a reactor, slowly evaporating out water and the dehydrating agent, and raising the temperature to 180-200 DEG C until a macromolecular rod-climbing phenomenon happens; adding the solvent into the reactor, and diluting the reaction products to the mass concentration of 2 to 15 percent; and adding a precipitator into the reactor, continuously stirring, performing centrifugal solid-liquid separation, washing the solid in acidic boiling water, filtering and drying to obtain the poly(arylene ether nitrile) resin powder. The prepared poly(arylene ether nitrile) resin powder has the characteristics of superfine granularity (reaching 100-400 meshes), uniform granularity, high purity, stable performance, and excellent electrical property, and can be widely applied in the fields such as electronics, precision machines, aerospace, new energy and the like.

The invention discloses a preparation method of non-isocyanate polyurethane and application of the non-isocyanate polyurethane in spraying polyurea. The preparation method of the non-isocyanate polyurethane comprises the following steps: (1) preparing a polyether diol diglycidyl ether intermediate; (2) preparing a heterogeneous loaded potassium carbonate and potassium iodide catalyst; (3) preparing polyether bicyclo carbonate; and (4) preparing the non-isocyanate polyurethane product. The invention has the advantages as follows: 1, the preparation method is low in energy consumption, free of pollution and low in cost and has a concept of environment friendliness, low-carbon economy and atomic economy; and 2. the prepared non-isocyanate polyurethane, as a amine resin for the spraying polyurea, has better chemical resistance, hydrolysis resistance and the penetration resistance and is superior to amino-terminated polyether in adhesion to substrate and leveling property.

A method for recycling metal in a waste LiMn1-x-yNixCoyO2 battery and preparing LiMn1-x-yNixCoyO2 comprises the steps that a waste lithium ion battery is discharged and dismantled, or positive electrode leftover materials and positive electrode fragments are collected, and waste positive plates are obtained; waste LiMn1-x-yNixCoyO2 powder is obtained through the calcinations, water dissolution and the filtration of the waste positive plates; the waste LiMn1-x-yNixCoyO2 powder and potassium pyrosulfate are mixed according to a certain proportion and calcinated, the calcinated products are leached by water, a potassium carbonate solution is added into the solution, then the filtration is carried out, the proportion of Li, Ni, Co and Mn in filter residues is adjusted by supplying carbonate, ball-milling, compressing and the calcinating are carried out on the Li, the Ni, the Co and the Mn, and LiMn1-x-yNixCoyO2 positive materials are regained. Composition adjustment is carried out on filtrate with sulfuric acid, and potassium hydrogen sulfate is obtained after the crystallization treatment is carried out.

A feed additive for relaxing the hot stress reaction of milk cow in the summer is prepared from organochromium, cultured yeast, nicotinic acid, VA, VD, VE, sodium selenite (or yeast selenium), copper sulfate, zinc sulfate, cobalt sulfate, calcium iodate, manganese sulfate, etc.

The invention discloses an ammonia-free chemical nickel plating bath which adopts an ammonia-free pH modifying agent to regulate the pH value of the bath. Each liter of the bath contains the components that nickel salt is 24 to 30g, reducing agent is 24 to 33g, buffering agent is 10 to 18g, complexing agent is 20 to 30g, stabilizing agent is 0.5 to 1.5mL, brightener is 1.5 to 3.0mL, and others are water. In the ammonia-free chemical nickel plating bath, the ammonia-free pH modifying agent is selected from one or the mixture of sodium hydroxide, and potassium hydroxide or potassium carbonate. All materials in the ammonia-free chemical nickel plating bath do not contain heavy metal, ammonia water is not utilized to regulate the pH value, the problems of environment pollution, invalidation caused by overlong storing time of the bath, etc. are not caused, and the obtained chemical plating bath is friendly to the environment, in addition, the luminance brightness of the made plating layer can be full-bright. The bath has wide application prospect.