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32 results about "Aggregation rate" patented technology

Method for purifying dodecanedioic acid

The invention discloses a method for purifying dodecanedioic acid, which comprises the following steps of: carrying out demulsification, filtration and decoloration on stop fermentation liquor of dibasic acid and adding pure water to dilute; adding purified water into a crystallization kettle, pumping diluted fermented clear liquid into a crystallizer, simultaneously filling dilute sulphuric acid with the mass concentration of 30 percent into a discharge hole of an external circulating pump and adding the dilute sulphuric acid into the crystallizer, and controlling the PH of reaction materials; ensuring crystal mush to flow to the lower part of a crystallization chamber through a central downcomer and then flow upwards, so that crystals with large granularities are enriched on the bottom layer of the crystallization chamber; and cooling the crystals outflowing from a discharge hole of the crystallizer by a cooler and carrying out filter pressing, washing and drying to obtain the dodecanedioic acid. Due to the adoption of the purifying method, the micro mixing effect is achieved by diluting local concentration of the reaction mass through the material circulating pump, the solution nucleation rate, the crystal growth rate and the aggregation rate are reduced, the moisture percentage and the impurity content of a filter cake are obviously reduced, the dried dibasic acid product has large and uniform particles, good glossy and high purify, and the continuity of the crystallizing process is realized.
Owner:CHINA PETROLEUM & CHEM CORP +1

Water-soluble ammonium polyphosphate NPK compound fertilizer and preparation method thereof

InactiveCN105272477AGood water solubilityPolymerization rate does not decayFertilizer mixturesUltrasound attenuationPhosphate
The invention relates to the field of compound fertilizers and provides a water-soluble ammonium polyphosphate NPK compound fertilizer and a preparation method thereof. The water-soluble ammonium polyphosphate NPK compound fertilizer comprises monoammonium phosphate, potassium sulphate or potassium chloride and a low-melting mixture, wherein the low-melting mixture comprises urea and an addition agent. The mass ratio of the urea to the monoammonium phosphate to the potassium sulphate or the potassium chloride is (1.0-7.0):1.0:(1.0-2.0). The preparation method of the water-soluble ammonium polyphosphate NPK compound fertilizer comprises the following steps that the urea and the addition agent are provided for forming the low-melting mixture, and melting treatment is performed on the low-melting mixture to obtain a first melt; a blend formed by the monoammonium phosphate and the potassium sulphate or the potassium chloride is added into the first melt to be subjected to a heating reaction; granulation is performed. The problems that when an existing method is adopted for synthesizing ammonium polyphosphate, the ammonia loss problem is serious, the environment is polluted, the bubble control effect is poor and the pH value is low, so that the product aggregation rate is rapid in attenuation are solved.
Owner:SHENZHEN BATIAN ECOTYPIC ENG +1

Method for loading appearance-controllable bi-metal nano-composite material between two-dimensional laminar material and conductive polymer double carrier

The invention discloses a method for loading an appearance-controllable bi-metal nano-composite material between a two-dimensional laminar material and a conductive polymer double carrier. The method comprises the following steps: step I, adding a bi-metal salt-containing solution into a two-dimensional laminar material-containing solution, so as to form a uniform solution; step II, adding conductive polymer monomer into the solution obtained in the step I; step III, removing unreacted monomer from the solution obtained in the step II, and washing with deionized water, so as to obtain the bi-metal nano-composite material. The method has the advantages that not only are the synthesis steps simple, but also the catalyst stability is high, separation for recycling is convenient, the service life of a catalyst is greatly prolonged, and the problems of high aggregation rate, short service life and low cyclic utilization efficiency of the conventional metal nano-catalyst in practical application are solved. More importantly, due to simple experiment parameter regulation, the appearance of the bi-metal nano-composite material can be controlled effectively, and the catalytic activity of the catalyst is further improved. Therefore, the purpose of using the catalyst efficiently is realized.
Owner:HARBIN INST OF TECH

Essential oil for activating blood and dredging collaterals and preparation method thereof

InactiveCN107334822ASignificantly reduce platelet aggregation rateHigh extraction rateEssential-oils/perfumesBlood disorderPlatelet aggregation ratioThrombus
The invention belongs to the technical field of Chinese medicine, and particularly relates to essential oil for activating blood and dredging collaterals. The essential oil comprises, by weight, 40-90 parts of jizhou mugwort leaf essential oilx, 30-70 parts of rhizoma corydalis essential oil, 36-76 parts of perilla leaf essential oil, 20-87 parts of garden balsam stem essential oil, 40-68 parts of carthamus tinctorius essential oil, 42-77 parts of chuanxiong rhizome essential oil and 30-75 parts of suberect spatholobus stem essential oil. The Chinese herbs are used as raw materials, an oxidation-resistant extracting solution is adopted for extracting the essential oil, and then all the essential oil is mixed according to a proportion to obtain the essential oil. The essential oil for activating blood and dredging collaterals has the remarkable effects that the aggregation rate of platelets is remarkably decreased, and blood viscosity and the wet weight of thrombus are remarkably reduced, and the effect of activating blood and dredging collaterals is remarkable; in the essential oil for activating blood and dredging collaterals, the chuanxiong rhizome essential oil and suberect spatholobus stem essential oil have a synergistic effect. The oxidation-resistant extracting solution is adopted for extracting the essential oil, so that the extracting rate of essential oil components is increased.
Owner:赵铄杰

Method for preparing single crystal or amorphous substance of medicine or medicine intermediatemedicinemedicine with adjustable particle size

The invention provides a method for preparing a single crystal or amorphous substance of a medicine or a medicine intermediate with adjustable particle size. According to the method, the supply and aggregation rate of medicine or medicine intermediate molecules is controlled by freezing and curing a medicine or medicine intermediate solution, so that the medicine or medicine intermediate single crystal or amorphous substance with adjustable particle size is prepared. Controllable preparation of the single crystal or amorphous substance of the medicine or the medicine intermediate is achieved in a mode of freezing the medicine or the medicine intermediate solution for the first time; by controlling the freezing and curing process of the solution, the supply rate and aggregation rate of themedicine or medicine intermediate are regulated and controlled, so that whether the medicine or medicine intermediate can be nucleated and crystallized and the crystal growth condition thereof are regulated and controlled, and the single crystal or amorphous substance of the medicine or medicine intermediate is efficiently prepared. Meanwhile, the particle size of the medicine or the medicine intermediate single crystal or amorphous substance is regulated and controlled by controlling the curing temperature.
Owner:INST OF CHEM CHINESE ACAD OF SCI +1

Method for purifying dodecanedioic acid

The invention discloses a method for purifying dodecanedioic acid, which comprises the following steps of: carrying out demulsification, filtration and decoloration on stop fermentation liquor of dibasic acid and adding pure water to dilute; adding purified water into a crystallization kettle, pumping diluted fermented clear liquid into a crystallizer, simultaneously filling dilute sulphuric acid with the mass concentration of 30 percent into a discharge hole of an external circulating pump and adding the dilute sulphuric acid into the crystallizer, and controlling the PH of reaction materials; ensuring crystal mush to flow to the lower part of a crystallization chamber through a central downcomer and then flow upwards, so that crystals with large granularities are enriched on the bottom layer of the crystallization chamber; and cooling the crystals outflowing from a discharge hole of the crystallizer by a cooler and carrying out filter pressing, washing and drying to obtain the dodecanedioic acid. Due to the adoption of the purifying method, the micro mixing effect is achieved by diluting local concentration of the reaction mass through the material circulating pump, the solution nucleation rate, the crystal growth rate and the aggregation rate are reduced, the moisture percentage and the impurity content of a filter cake are obviously reduced, the dried dibasic acid product has large and uniform particles, good glossy and high purify, and the continuity of the crystallizing process is realized.
Owner:CHINA PETROLEUM & CHEM CORP +1
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