18 results about "Phosphorus acid" patented technology

This invention discloses a method for improving the yield of urea phosphate in the preparation of wet-process phosphoric acid. The method involves mixing a crystallizer with wet-process phosphoric acid and urea, reacting the mixture, and then cooling, crystallizing, filtering, and drying to obtain urea phosphate. Alternatively, wet-process phosphoric acid is mixed with urea and reacted. After the reaction, a crystallizer or a urea phosphate mother liquor containing the crystallizer is added, followed by cooling, crystallizing, filtering, and drying to obtain urea phosphate. The crystallizer is one or a mixture of two or more of ethylene glycol methyl ether, ethylenediaminetetraacetic acid, and citric acid in any proportion. The urea phosphate produced by this method is in crystalline form, meeting the industrial urea phosphate standard (GB / T27805-2011), satisfying market demand, and featuring a low-cost crystallizer with flexible addition methods, making it very convenient for practical production.

The application discloses a kind of high-efficiency precipitation treatment process and system of iron phosphate mother liquor wastewater, belong to battery raw material grade phosphorus acid iron sewage treatment field, including the following steps: mother liquor and ammonia water are injected into primary mixing pool; pH is adjusted to 6.5~6.8 by mechanical stirring reaction; sludge of flocculation tank and primary sedimentation tank backflow carries out flocculation reaction 30min;Into primary sedimentation tank, the best rising velocity of mother liquor is 0.4m / h~0.6m / h;Part of mother liquor is discharged from effluent area, another part of mother liquor is discharged from bottom sludge concentration area, reduce the sludge amount of primary plate-frame filter press, shorten plate-frame filter press feeding time, bottom concentrated sludge is continuously discharged by sludge backflow pump and primary sludge discharge pump;Part of sludge backflows to flocculation tank, another part of sludge enters primary plate-frame filter press and is dewatered;Backflow sludge and flocculation can be fully mixed to form larger flocculation, and the solid content of sludge is higher after larger flocculation enters primary plate-frame filter press and is filtered again;Primary plate-frame filtrate flows into secondary mixing pool.

The invention discloses phosphorus-based acid source catalyzed high-flame-retardant ultraviolet-resistant aerogel powder and a preparation method of the phosphorus-based acid source catalyzed high-flame-retardant ultraviolet-resistant aerogel powder. The preparation method comprises the following steps: S1, adding TiO2 powder into ethanol; adding nitric acid to adjust the pH value; amino alkyl triethoxy silane is added, and stirring is carried out; after heating reaction, washing and vacuum drying are performed to obtain modified TiO2; s2, tetraethyl orthosilicate, absolute ethyl alcohol and deionized water are mixed, a phosphorus acid source is dropwise added while stirring is conducted, and water bath hydrolysis is conducted after dropwise adding is completed; s3, adding modified TiO2 into the solution obtained in S2, stirring, and dropwise adding ammonia water to induce the system to generate gelation reaction; s4, adding absolute ethyl alcohol and normal hexane after gelling, and carrying out solvent exchange; s5, adding a mixed solution of a hydrophobic modifier and n-hexane for surface modification to obtain a wet gel composite material; s6, drying to obtain the flame-retardant hydrophobic silicon dioxide / modified TiO2 aerogel composite material. The fireproof and anti-ultraviolet performance of the HSA composite material disclosed by the invention is remarkably improved.

The application discloses a preparation method of isopropylated triphenyl phosphate with low phosphorus acid triphenyl ester content, which comprises the following steps: firstly, isopropyl phenol, phenol, phosphorus oxychloride and a catalyst are put into a reactor, and isopropylated triphenyl phosphate crude product is obtained after reaction; secondly, the isopropylated triphenyl phosphate crude product is subjected to vacuum distillation, and the vacuum distillation is stopped when the acid value of the isopropylated triphenyl phosphate crude product is less than or equal to 3 mgKOH / g; finally, the isopropylated triphenyl phosphate crude product after vacuum distillation is subjected to molecular distillation treatment, and isopropylated triphenyl phosphate product is obtained. The preparation method is a physical purification process, has mild conditions and simple operation, does not introduce new impurities, and does not produce a large amount of 'three wastes', so that the problem of a large amount of phosphorus acid ester organic wastewater caused by alkali washing water washing in a traditional process can be effectively avoided, and environmental pollution in the production process is greatly reduced.

An aqueous dispersion of a polymer additive having a weight average molecular weight of from 2,000 to 25,000 g / mol and comprising, by weight based on the weight of the polymer additive, (i) from 20% to 85% of structural units of an ethylenically unsaturated siloxane monomer; (ii) from 0.1% to 10% of structural units of an ethylenically unsaturated functional monomer carrying at least one functional group selected from an amide, ureido, carboxyl, carboxylic anhydride, hydroxyl, phosphorus acid, or sulfonic acid group, a salt thereof, or mixtures thereof; and (iii) from 5% to 79.9% of structural units of an additional ethylenically unsaturated nonionic monomer. The aqueous dispersion has a coagulum content less than 2,000 ppm after filtration through a 44 micron sieve. A coating composition comprises the aqueous dispersion of the polymer additive can provide coatings with anti-corrosion and / or stain removal properties.

The application discloses a microbial preparation for saline-alkali soil improvement and a preparation method and application thereof, and relates to the technical field of soil improvement, and specifically discloses a microbial preparation for saline-alkali soil improvement, which comprises Bacillus marinus with a preservation number of CGMCC No.28096, Bacillus cereus with a preservation number of CGMCC No.29355, Bacillus subtilis with a preservation number of CICC 25064 and Pseudomonas with a preservation number of CICC 22131, and the ratio of the viable bacterial counts of the Bacillus marinus, the Bacillus cereus, the Bacillus subtilis and the Pseudomonas is (3-5):(1-3):(5-7):(1-3). The microbial preparation can effectively reduce the alkalinity and sodium adsorption ratio of the saline-alkali soil, effectively degrade phosphorus acid tris(2-chloropropyl) ester pollutants, and improve the quality of the saline-alkali soil.

The present invention is a composition comprising a) an aqueous dispersion of polymer particles optionally functionalized with a phosphorus acid monomer and having a z-average particle size as measured using dynamic light scattering in the range of from 50 nm to 500 nm; b) a salt of iodic acid; c) a C8-C10-alkyl phosphate or sulfate; with the proviso that when the polymer particles are not functionalized with the phosphorus acid monomer, the composition further comprises d) a hydrotrope. The composition of the present invention provides a way of preserving a latex against microbial growth in the absence of a biocide.

The invention relates to a coke ore pellet for industrial yellow phosphorus production and a preparation method of the coke ore pellet. The preparation method comprises the following steps: S1, respectively crushing and screening coke powder and ground phosphate rock; s2, fully stirring and mixing the screened coke powder and ground phosphate rock with industrial phosphoric acid to obtain an intermediate mixed material; s3, uniformly adding industrial water into the intermediate mixed material obtained in the S2 through a spraying device, starting stirring at the same time, and uniformly stirring to obtain a final mixed material; and S4, the final mixed material obtained in the S3 is pressed into coke ore pellets through a double-roller press, and then the coke ore pellets are put into a plate type dryer to be dried and shaped. According to the preparation method of the coke ore pellets, the coke powder and the ground phosphate rock serve as raw materials, the industrial phosphoric acid serves as the binding agent and the activating agent, the prepared coke ore pellets are low in cost, high in compressive strength in a high-temperature area and high in pelletizing rate and can serve as a raw material for producing industrial yellow phosphorus, and cost reduction and efficiency improvement of yellow phosphorus production are achieved.

The application discloses a phosphorus acid triphenyl ester fluorescent quantitative rapid detection method and products and application thereof, and relates to a phosphorus acid triphenyl ester hapten, an artificial antigen, a monoclonal antibody and a preparation method thereof, and a phosphorus acid triphenyl ester fluorescent quantitative rapid detection test strip. The test strip comprises a sample pad, a label pad, a reaction membrane and a water absorption pad which are sequentially connected and fixed on a PVC bottom plate. The label pad is coated with an anti-phosphorus acid triphenyl ester monoclonal antibody which is labeled with a detectable label. The reaction membrane is provided with a T line and a C line. The T line is coated with a phosphorus acid triphenyl ester artificial antigen, and the C line is coated with a sheep anti-phosphorus acid triphenyl ester antibody. The test strip is combined with the detection method in the application, and has the advantages of high specificity, high sensitivity, short detection time, low cost, low skill requirement for an operator and the like under the premise of ensuring detection accuracy, and the detection limit reaches 0.1 ug / kg. The test strip is suitable for rapid detection of a large number of samples on site and has a good application prospect.

This invention relates to the field of phosphorus chemical technology and discloses a method for preparing monoammonium phosphate (MAP) using phosphorus and fluorine wastewater residue and residual phosphoric acid raffinate. The method involves mixing and reacting phosphorus and fluorine wastewater residue, residual phosphoric acid raffinate, and sodium sulfate, controlling the ratio of F / Mg to be greater than 4 and the ratio of Na / Mg to be greater than 3 in the reaction system. The reaction produces dilute phosphoric acid and phosphogypsum. After solid-liquid separation, the filtrate is dilute phosphoric acid. Ammonia is added to the dilute phosphoric acid for neutralization, followed by filtration. The resulting filtrate is then concentrated through at least one evaporation and cooling crystallization to obtain the MAP product. This invention uses residual raffinate to prepare MAP, with phosphorus and fluorine wastewater residue as a desulfurizing agent. The calcium source in the residue can be used as a desulfurizing agent, the phosphorus source can produce phosphoric acid, and fluorine acts as a co-precipitant to remove magnesium. This avoids the need to add additional fluorine-containing reagents in industrial MAP production, resulting in a simpler process and lower cost.

The invention relates to the technical field of wastewater treatment, in particular to an electric flocculation system coupled with a solid electrolyte and a deep phosphorus removal method of phosphorus-containing wastewater, and the electric flocculation system coupled with the solid electrolyte comprises an anode and a cathode coupled with an adsorbent type solid electrolyte layer; and the adsorbent type solid electrolyte layer is anion exchange resin with phosphorus adsorption capacity. The solid electrolyte electric flocculation system is applied to phosphorus-containing wastewater with low phosphate radical concentration, and the advantages and characteristics of the adsorbent type solid electrolyte and the electric flocculation system are fully exerted, so that phosphate radical enrichment can be realized, and the removal rate of phosphate radicals is increased; moreover, for the problem of high energy consumption of a common electric flocculation system caused by low conductivity of low-concentration phosphorus-containing wastewater, the solid electrolyte electric flocculation system disclosed by the invention enhances ion conduction by introducing the adsorbent type solid electrolyte layer, so that the energy consumption of the system is greatly reduced.

The present application relates to the technical field of lithium ion battery cathode material, in particular to a kind of phosphorus acid iron production wastewater treatment method.The present application includes the following steps:S1.pH is adjusted to 10.6-11.5 by adding zirconium industry waste lye to phosphorus acid iron production wastewater, after reaction, solid-liquid separation is carried out, and the precipitate is removed, to obtain solution A;S2.carbonate is added to solution A, after reaction, solid-liquid separation is carried out, and the precipitate is removed, to obtain solution B;S3.solution B is reused to crude phosphoric acid for producing phosphorus acid iron;And / or, solution B is treated by membrane.The present application uses zirconium industry waste lye for the pretreatment of phosphorus acid iron production wastewater, not only can reduce the pretreatment cost, and the phosphorus acid root retention rate in pretreated wastewater is relatively high, can be directly reused to crude phosphoric acid, reduce phosphorus loss;While effectively reducing the hardness of phosphorus acid iron, when carrying out the later stage membrane treatment, it can significantly reduce the risk of fouling and membrane blocking.

The present invention is a composition comprising an aqueous dispersion of a) polymer particles functionalized with structural units of a phosphorus acid monomer; b) one or more inorganic extenders; and c) polyorganosiloxane resin particles having a D50 particle size in the range of from 1 μm to 10 μm, and a number average molecular weight in the range of from 100,000 to 1,000,000 Daltons. The composition of the present invention is useful in a matte paint formulation that forms a coating with a balance of desirable coefficient of friction, mar resistance, and scratch resistance properties.

The present invention is a composition comprising a) an aqueous dispersion of polymer particles optionally functionalized with structural units of a phosphorus acid monomer and having a z-average particle size as measured using dynamic light scattering in the range of from 50 nm to 500 nm; b) a C4-C10-alkyl hydroperoxide; c) a C8-C10-alkyl phosphate or sulfate; with the proviso that when the polymer particles are not functionalized with structural units of the phosphorus acid monomer, the composition further comprises d) a hydrotrope. The composition of the present invention provides a biocide-free latex with relatively low concentrations of a hydroperoxide.

The invention discloses a phosphoric acid tri (1, 3-dichloro isopropyl) ester degrading flora and application of the phosphoric acid tri (1, 3-dichloro isopropyl) ester degrading flora. Belongs to the technical field of biological treatment of environmental organic pollutants. The flora is mixed bacteria and is named as QYTD-1, and the invention aims to provide the phosphoric acid tri (1, 3-dichloroisopropyl) ester degrading flora which is high in environmental adaptability, relatively low in cost and relatively good in degrading effect and application of the phosphoric acid tri (1, 3-dichloroisopropyl) ester degrading flora. The catalyst is used for degrading tris (1, 3-dichloro isopropyl) phosphate.

The present invention is a composition comprising a waterborne dispersion of a) polymer particles functionalized with structural units of a phosphorus acid monomer; b) an orthophosphate n-butyl ester block additive. The composition of the present invention is useful in a paint formulation to provide block resistance and high tint strength.

This application relates to the field of resource recovery technology for aluminum etching solutions, specifically disclosing a process for resource recovery of waste acid from display panel aluminum etching solutions. The process includes the following steps: adsorbing the waste acid from the display panel aluminum etching solution onto mesoporous silica, filtering to obtain a three-component mixed acid solution; distilling the three-component mixed acid solution to obtain a dilute phosphoric acid solution and a two-component mixed acid solution; concentrating and purifying the dilute phosphoric acid solution to obtain 85% industrial phosphoric acid; and neutralizing the two-component mixed acid solution with calcium hydroxide and magnesium oxide to obtain CMA de-icing agent. This application effectively removes metal ions from the waste acid through mesoporous silica adsorption, improving the purity of the product.

The present application relates to the field of bio-based flame-retardant materials, and more particularly to a bio-based flame-retardant polyurethane pouring sealant and a preparation method thereof. The bio-based flame-retardant polyurethane pouring sealant is composed of an A component containing a phosphorus acid bis(tolyl) monococoyl ester bio-based flame retardant and a B component containing castor oil and modified soybean oil polyol. The flame retardant has high phosphorus content, good char-forming structure and high bio-based content by regulating the ratio of tolyl and cocoyl, and has excellent flame-retardant efficiency. The A and B components are prepared by vacuum dehydration and mixing, respectively, and the ratio can be adjusted, and the construction is simple. The present application uses low epoxy value epoxy soybean oil with an epoxy value of 2.0±0.5%, which significantly improves the long-term stability and the wet heat aging electrical insulation performance of the system without reducing the flame-retardant grade. The product after curing has V0 level flame-retardant performance, low water absorption, high adhesive strength, excellent mechanical properties, green environmental protection, low toxicity and low migration, and is suitable for circuit board and other electronic device pouring protection.