10 results about "Ammonium hydrogen phosphate" patented technology

The application provides a catalytic denitration agent and a preparation method thereof, and comprises the following components: a reducing base: urea 30-60 parts, ammonium carbamate 10-25 parts, ammonium carbonate 5-15 parts, ammonium bicarbonate 5-15 parts; a phase change catalytic component: ammonium dihydrogen phosphate 2-6 parts, di-ammonium hydrogen phosphate 1-5 parts, molybdate 0.05-0.5 parts, tungstate 0.1-0.8 parts, organic acid metal salt 0.1-0.8 parts, modified zeolite 1-8 parts; a functional additive: dispersant 0.2-1.0 parts, surfactant 0.1-0.6 parts, corrosion inhibitor 0.05-0.2 parts. The application constructs a multi-component complex catalytic system, and the prepared high-molecular catalytic denitration agent can realize the unity of wide-temperature high-efficiency denitration, low corrosion, low ammonia escape and high operation stability while significantly reducing the phase change temperature and energy consumption, and effectively solves the multiple problems of harsh reaction conditions, unstable efficiency and equipment corrosion in the prior art.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a separation method and application of iron, arsenic and indium. The method for separating the iron, the arsenic and the indium comprises the following steps: mixing a high-iron high-arsenic indium solution and an extraction organic phase, and extracting to obtain an organic phase loaded with the iron and the arsenic and raffinate; the organic phase loaded with iron and arsenic is subjected to reverse extraction, and iron reverse extraction liquid and an organic phase loaded with arsenic are obtained; the arsenic-loaded organic phase is subjected to reverse extraction, and arsenic reverse extraction liquid is obtained; the extraction organic phase comprises an amine extraction agent, a neutral phosphate extraction agent and a diluent; and a stripping agent adopted when the organic phase loaded with iron and arsenic is subjected to stripping comprises a mixture of a phosphoric acid solution and an ammonium hydrogen phosphate solution. According to the method, iron and arsenic elements are extracted preferentially, extraction of indium is inhibited, then iron and arsenic reverse extraction is conducted in sequence, and step-by-step separation of iron and arsenic is achieved.

The application provides a method for reviving an alcohol amine solution. The method for reviving the alcohol amine solution comprises the following steps: performing first adsorption treatment on the alcohol amine solution to be revived by using a hydrogen phosphate removing agent to obtain a first solution and an adsorption system; performing second adsorption treatment on the first solution by using a hydroxyl ion exchange resin and a methyldiethanolamine cation exchange resin in sequence to obtain a second solution; performing second mixing treatment on the adsorption system by using an ammonium sulfate solution to obtain a third solution and a removing agent to be regenerated; performing second mixing treatment on the third solution by using a hydrogen ion exchange resin to obtain a fourth solution; and performing third mixing treatment on the second solution and the fourth solution to obtain a revived alcohol amine solution. The method for reviving the alcohol amine solution can remove the heat stable salt in the alcohol amine solution to be revived, and hardly causes loss of ammonium hydrogen phosphate in the alcohol amine solution to be revived.

The invention provides an organic fertilizer suitable for tea garden soil, the organic fertilizer comprises the following components by weight: 80 parts of tea residue, 75 parts of manure, 175 parts of tea seed cake, 65 parts of illite powder, 30 parts of agricultural rare earth, 25 parts of ammonium hydrogen phosphate, 3 parts of trichoderma viride, 65 parts of calcium magnesium phosphate fertilizer, 40 parts of nitrogen fertilizer, and 15 parts of plant ash, the total concentration of the trichoderma viride is 1.7 * 10 < 8 > cfu / ml, the ratio of lanthanum to cerium in the agricultural rare earth is 2: 1, and the ratio of lanthanum to cerium in the agricultural rare earth is 2: 1. The content of the lanthanum is 335 mg / kg. The tea garden soil texture can be improved, the soil water retention and scrap capability is improved, the tea garden soil hardening condition is reduced, and the tea yield and quality can be improved; meanwhile, the organic fertilizer can be granulated through the drying granulator, and the processing time of the organic fertilizer is shortened, so that the processing efficiency of the organic fertilizer is improved, and the organic fertilizer can be conveniently produced and processed.

The application discloses a method for preparing wolf tooth rod-shaped calcium phosphate based on ion coordination regulation and directional nucleation, and the method uses calcium chloride as a calcium source, di-ammonium hydrogen phosphate as a phosphorus source, and polyethylene glycol-6000 as a morphology regulator; through a hydrothermal reaction combined with a high-temperature calcination process, wolf tooth rod-shaped calcium phosphate with high monomodal preferential orientation is prepared; EDS energy spectrum scanning proves that the product is calcium phosphate and has excellent biocompatibility, and can be widely applied to bone tissue engineering scaffolds, drug carriers, biological coatings and other fields; the process steps are simple, the reaction conditions are controllable, and the cost is low, so that the application provides a new idea for preparation of high-performance calcium phosphate materials.

The application discloses a preparation method of a multi-element doped fluorophosphate positive electrode material, and belongs to the technical field of electrode materials. The preparation method comprises the following steps: S1, mixing ammonium hydrogen phosphate, a mixture of vanadium pentoxide and ammonium metavanadate, graphene and glucose, and performing water sand grinding to obtain a slurry; S2, performing spray drying on the slurry, high-temperature sintering, airflow crushing, and obtaining crushed materials; S3, mixing the crushed materials, lithium fluoride, trimanganese tetroxide, lithium carbonate, nanometer carbon tubes and non-oxidized di-niobium, adding water sand grinding, and performing spray drying to obtain dry powder; and S4, high-speed mixing the dry powder with nanometer aluminum oxide, high-temperature sintering, and crushing to obtain the multi-element doped fluorophosphate positive electrode material. The multi-element doped fluorophosphate positive electrode material has the characteristics of excellent electric conductivity, good processing performance, high point, high energy density, excellent cycle and rate performance. The preparation process is simple, and is suitable for large-scale industrial production.

The application relates to a hydrogenation catalyst and a preparation method thereof, and belongs to the technical field of catalysts. The method comprises the following steps: 1) soaking sepiolite in deionized water, settling, and removing impurities to obtain substance a; 2) uniformly mixing the substance a with metatitanic acid, adding a pore-expanding agent, a binder and water, shaping, drying, and calcining to obtain a carrier b; 3) preparing a mixed solution of cobalt salt and nickel salt, adding molybdenum salt, a complexing agent and a solvent to obtain an impregnation liquid c, impregnating the carrier b in the impregnation liquid c, drying, and calcining to obtain a mixture d; and 4) preparing an impregnation liquid e by taking nickel salt, ammonium hydrogen phosphate and a solvent, impregnating the mixture d in the impregnation liquid e, drying, and calcining to obtain the hydrogenation catalyst. The active component of the prepared hydrogenation catalyst is distributed in multiple layers from the outside of the carrier to the inside of the carrier, the outermost layer of the core is nickel phosphide, the middle layer of the shell is active metal components of nickel oxide and molybdenum oxide, and the core is molybdenum oxide and cobalt oxide. The hydrogenation catalyst can realize oxidation state activation and has high low-temperature activity.

This invention belongs to the field of building materials and discloses a low-carbon admixture based on red mud and its preparation method. The low-carbon admixture comprises the following raw materials in parts by weight: 100 parts red mud, 5-10 parts sodium ammonium hydrogen phosphate, 20-30 parts modified plant fiber powder, and 20-40 parts water. The preparation method includes: mixing red mud, sodium ammonium hydrogen phosphate, modified plant fiber powder, and water; wet ball milling followed by calcination; cooling to room temperature; and then milling again to obtain the red mud admixture. This invention utilizes red mud as a raw material, and the prepared low-carbon admixture has the advantages of high compressive strength and high activity index, and effectively solves the pollution problem of red mud.

The invention discloses dietary fiber premixed flour and a preparation method thereof, belongs to the technical field of food processing, and is used for solving the technical problems that premixed flour in the prior art is single in taste, unobvious in flavor characteristic and lack of nutrition, and the bulkiness of flour cannot be improved and starch gelatinization cannot be prevented. The preparation method of the dietary fiber premixed flour comprises the following steps: mixing polydextrose, composite hydrophilic colloid, resistant dextrin, fructo-oligosaccharide, a sweetening agent and modified fruit and vegetable powder solid, and then grinding and sieving to obtain a mixture; and sealing the mixture to obtain the dietary fiber premixed flour. The composite hydrophilic colloid prepared by the invention is prepared by compounding hydroformylated xanthan colloid, esterified sodium alginate and gelatin; the prepared modified fruit and vegetable powder solid is obtained by spraying emulsion containing ammonium hydrogen phosphate and olive oil to the surface of fruit and vegetable powder and curing. The prepared dietary fiber premixed flour has the advantages of being high in nutritional value, fluffy in taste, obvious in flavor characteristic and rich in taste.

The invention discloses a composite-based biochar material for mine acid tail water treatment and a preparation method thereof.The composite-based biochar material is based on bamboo reed-based activated carbon high in ash content and is combined with ammonium hydrogen phosphate, magnesium oxide, calcium hydroxide, carboxymethyl cellulose and other components to form a slow-release composite-based material; the composite material realizes rapid adjustment of the pH value of the acidic mine tail water, efficient adsorption of heavy metals and improvement of the long-term stability of the treatment effect through a multi-component synergistic effect.