37results about How to "Not easy to coalesce" patented technology

Production of urban mixed gas from mixed light hydrocarbon gas blended coal is carried out by filtering liquefied light hydrocarbon, pressurizing, heat vaporizing in heating vaporizer, mixing vaporized light-hydrocarbon gas with air or pressurized air in mixing chamber to form mixed light hydrocarbon, inspecting mixed light-hydrocarbon by oxygen inspector, storing in intermediate air tank, mixing coal-made air with mixed light hydrocarbon in mixing chamber to form mixed gas, inspecting mixed gas by oxygen inspector, storing in air tank, low or low-mediate pressure two-stage transfer distributing for mixed gas and entering into user terminal. It has less carbon monoxide content.

The invention discloses a hydrophobic modification method for a Y-shaped molecular sieve. The method comprises the following steps: A, uniformly paving and dispersing the Y-shaped molecular sieve in silica wool, then placing the silica wool in a reaction furnace, wherein the Y-shaped molecular sieve is processed through baking for 2 hours at a temperature of 400-550 DEG C; B, introducing mixed gas comprising N2 and SiCl4 gas to the Y-shaped molecular sieve in the step A to carry out a reaction, wherein the reaction temperature is 300-600 DEG C, the reaction time is 30-180 minutes; C, taking the molecular sieve product from the step B, then washing the product through deionized water until no Cl<-> exists in the filtrate, and then washing the product through an acid; D, drying the resulting product from the step C, continuously packing the product through the silica wool, then placing the silica wool into the reaction furnace to carry out the reaction with water vapor having the temperature of 600-900 DEG C, wherein the reaction time is 2-12 hours. The hydrophobic modification method provided by the present invention has the following advantages that: the method is a convenient gasphase dealuminzation and silicon reinsertion method; with the method, the prepared molecular sieve has uniform silica alumina ratio, the solid particles are not easy to be aggregated to form the blocks.

The invention discloses a nano solid super-strong alkali catalyst. The nano solid super-strong alkali catalyst comprises 50 to 80 molar percent of magnesium oxide and 20 to 50 molar percent of tin oxide, and has a cubic crystal form, and the side length of the cube is 60 to 150nm. The invention also provides a preparation method of the nano solid super-strong alkali catalyst and application of the nano solid super-strong alkali catalyst in catalysis. The nano solid super-strong alkali catalyst has simple components and high catalytic activity, is easy and convenient to prepare, is present in a small amount, does not corrode a reactor and ensures mild reaction conditions when applied to the catalysis of one-pot condensation reaction, belongs to an environment-friendly catalyst, and can be used for multiple times through centrifugal separation after the reaction is finished.

The invention discloses a polymer microsphere adjusting and driving agent, which comprises the following raw materials in parts by weight: 21-25 parts of acrylamide, 5-8 parts of anionic surfactant, 0.5-1.2 parts of crosslinking agent, and 5-8 parts of emulsifier 1.5-2 parts of ammonium persulfate, 0.1-0.5 parts of potassium persulfate, 150-250 parts of oil and 100-280 parts of deionized water; stir the oil and emulsifier evenly to form a continuous oil phase; mix acrylamide, anion surface Active agent, crosslinking agent, and part of ammonium persulfate are dissolved in deionized water to form a water phase; potassium persulfate solution and ammonium persulfate solution are prepared; the water phase is added to the oil phase, ammonium persulfate solution is added at low temperature, and persulfate solution is added at high temperature Potassium solution, constant temperature reaction and natural cooling to room temperature. The invention provides a polymer microsphere control and displacement agent, through the combined reaction of the above-mentioned several materials, it is possible to synthesize polymer gel microspheres with good gel ductility matching its pore throat size, which greatly improves oil recovery .

The invention discloses a diesel fuel pour-point depressant dispersant and a preparation method thereof. The dispersant comprises the following components by weight percentage: 0-20% of Tween, 0-20% of polyethylene glycol, 0-10% of vinyl alcohol butyl ether, 0-10% of polar nitrogenous compounds and 50-80% of Span-80. The raw materials are weighed and mixed according to the weight percentage, and then the materials are stirred in a stirring tank with the speed of 100rpm for 30 min at the temperature of 50 DEG C, and the dispersant is prepared. In the invention, a new dispersant mixture is prepared by combining and mixing various kinds of dispersants uniformly, and then is used with the pour-point depressant according to a certain proportion, thereby improving the sensitivity of the pour-point depressant and the effect of pour point depression.

The present invention discloses an esomeprazole sodium 1,2-propylene glycol solvate and a preparation process thereof, wherein X-ray powder diffraction spectrogram has characteristic diffraction peaks when a diffraction angle 2theta is 5.84+ / -0.1, 10.88+ / -0.1, 11.78+ / -0.1, 15.58+ / -0.1, 20.36+ / -0.1, 20.98+ / -0.1,22.54+ / -0.1, 22.90+ / -0.1, 23.98+ / -0.1, 24.42+ / -0.1, 24.68+ / -0.1, 25.32+ / -0.1, 26.36+ / -0.1, 27.82+ / -0.1, 29.76+ / -0.1, 31.74+ / -0.1, and 32.40+ / -0.1. The starting material esomeprazole sodium is added to the 1,2-propylene glycol, the mixture is stirred at a temperature of 10 to 60 DEG C for 2 to 9 hours, and through filtering and drying, the esomeprazole sodium 1,2-propylene glycol solvate is obtained. The preparation process according to the present invention is simple, achieves a high yield, and obtains safe and nontoxic solvent. The obtained product esomeprazole sodium 1,2-propylene glycol solvate has a greater crystalline granularity, fails to be aggregated simply, and achieves a good stability.

The present application proposes a method for preparing a pour point depressant for high waxy crude oil, which includes using α-olefin and maleic anhydride to carry out a free radical copolymerization reaction to obtain a pour point depressant intermediate, and then esterifying the pour point depressant intermediate with aliphatic alcohol. The process of obtaining crude pour point depressant products through chemical reaction, and the fatty alcohol is a mixed alcohol of higher alcohol and Guerbet alcohol. The present application utilizes α-olefin and maleic anhydride to undergo a copolymerization reaction to form a copolymer, and at the same time, maleic anhydride itself has an acid anhydride, which can react with aliphatic alcohol to be esterified to obtain a pour point depressant, which has a good pour point depressant effect. In this application, a large branched Guerbet alcohol is introduced on the basis of the copolymer to improve the molecular structure of the pour point depressant, so that the content of the product is increased to 80%, the freezing point is less than or equal to 15°C, and the safety of the product due to low concentration transportation is reduced. risk and save on shipping costs.