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    • 94. 发明申请
    • Process for the production of hydrochloric acid and neutralized sulfates
    • 生产盐酸和中和硫酸盐的方法
    • US20020114759A1
    • 2002-08-22
    • US09788140
    • 2001-02-16
    • Jose Cabello-Fuentes
    • C01D005/02
    • C01B17/96C01B7/035C01C1/164C01C1/242C01D5/02
    • A process for the production of hydrochloric acid and neutralized sulfates comprising: reacting sulfuric acid with an alkaline metal chloride in order to obtain a liquor containing hydrochloric acid, an acid alkaline metal sulfate and an excess of sulfuric acid; separating the hydrochloric acid from the liquor containing the hydrochloric acid, the acid alkaline metal sulfate and the excess of sulfuric acid; neutralizing the acid alkaline metal sulfate and the excess sulfuric acid by adding to the remaining liquor after the separation of the hydrochloric acid a neutralizing agent to obtain a neutralized mass; cooling the neutralized mass to crystallize the neutralized alkaline metal sulfate and obtain neutralized alkaline metal sulfate crystals; and separating the neutralized alkaline metal sulfate crystals from the liquor.
    • 一种生产盐酸和中和硫酸盐的方法,包括:使硫酸与碱金属氯化物反应,以获得含有盐酸,酸性碱金属硫酸盐和过量硫酸的液体; 从含有盐酸,酸性碱金属硫酸盐和过量的硫酸的液体中分离盐酸; 在分离盐酸中和剂后向其余液体中和酸碱金属硫酸盐和过量硫酸,得到中和物质; 冷却中和的物质以使中和的碱金属硫酸盐结晶,得到中和的碱金属硫酸盐晶体; 并从该液体中分离中和的碱金属硫酸盐晶体。
    • 95. 发明授权
    • Preparation of N-hydrocarbylthiophosphoric triamides
    • N-烃基硫代磷酸三酰胺的制备
    • US5770771A
    • 1998-06-23
    • US786396
    • 1997-01-21
    • Gerald M. SulzerChi Hung ChengW. Dirk KlobucarCharles H. Kolich
    • Gerald M. SulzerChi Hung ChengW. Dirk KlobucarCharles H. Kolich
    • C01C1/16C07F9/02C07F9/22C07F9/26
    • C01C1/164C07F9/025C07F9/224C07F9/26
    • Continuously fed to and mixed in a first reactor are (i) a preformed mixture of primary hydrocarbyl monoamine, tertiary amine and liquid inert organic solvent, and (ii) thiophosphoryl chloride while removing heat of reaction to maintain the reaction temperature in the range of about -20.degree. C. to about +50.degree. C. A reaction mixture containing N-hydrocarbylaminothiophosphoryl dichloride is formed. Ammonia and an effluent stream from the first reactor are continuously fed to and mixed in a second reactor in proportions of at least about 16 moles, of ammonia per mole of N-hydrocarbylaminothiophosphoryl dichloride that produce a reaction mixture containing N-hydrocarbylthiophosphoric triamide, and that keep in solution ammonium chloride co-product formed in the reaction. Heat of reaction is removed so that the temperature is high enough to keep ammonium chloride-ammonia complex from forming a solid phase in this reaction mixture, but low enough to avoid significant reduction in yield of N-hydrocarbylthiophosphoric triamide being formed. Effluent is withdrawn from the second reactor so as to maintain a substantially constant volume of reaction mixture in the second reactor. The process eliminates a difficult filtration of the co-product ammonium chloride formed in the second reaction. Also, it possible to accomplish this in a continuous process, with improved efficiency in large scale production of the N-hydrocarbylthiophosphoric triamides. Moreover, the ammonium chloride can be readily converted in the process to an industrially useful liquid co-product mixture.
    • 连续进料并混合在第一反应器中的是(i)主要烃基单胺,叔胺和液体惰性有机溶剂的预制混合物,和(ii)硫代磷酰氯,同时除去反应热,将反应温度保持在约 -20℃至约+ 50℃。形成含有N-烃基氨基硫代磷酰基二氯化物的反应混合物。 将氨和来自第一反应器的流出物流连续地进料至第二反应器中,其比例为至少约16摩尔,每摩尔N-烃基氨基硫代磷酰二氯的氨,其产生含有N-烃基硫代磷酰三酰胺的反应混合物,并且 保持反应中形成的溶液中氯化铵共同产物。 去除反应热,使得温度足够高以使氯化铵 - 氨络合物在该反应混合物中形成固相,但足够低以避免形成的N-烃基硫代磷酰三酰胺的产率显着降低。 将废水从第二反应器中排出,以便在第二反应器中维持反应混合物体积基本恒定。 该方法消除了在第二反应中形成的副产物氯化铵的难以过滤。 此外,可以在连续的方法中实现这一点,提高N-烃基硫代磷酸三酰胺的大规模生产的效率。 此外,氯化铵可以在工艺中容易地转化成工业上有用的液体共产物混合物。