会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 24. 发明授权
    • Process for producing alkyl nitrite
    • 亚硝酸烷基酯的制备方法
    • US06191302B1
    • 2001-02-20
    • US09176372
    • 1998-10-21
    • Keigo NishihiraShuji TanakaShinichi Yoshida
    • Keigo NishihiraShuji TanakaShinichi Yoshida
    • C07C20302
    • C07C201/04C07C203/00
    • An alkyl nitrite can be produced on an industrial scale with a high efficiency and with a low yield of by-products by the process wherein nitrogen oxide-containing feed gas is brought into an alkyl alcohol liquid in a distillation column reactor while circulating a liquid fraction, produced in the reactor and containing the alkyl alcohol, through a circulation path including a lower section of the reactor and a cooler to remove the reaction heat vigorously generated in the reactor, and while controlling the weight ratio of the circulating liquid fraction to the total alkyl alcohol fed into the reactor to 50:1 to 200:1, the molar ratio of the total alkyl alcohol fed to the reactor and contained in the circulating liquid fraction to nitrogen oxide in the feed gas to 20:1 to 150:1, and the content of the alkyl alcohol in the liquid fraction to 15 to 60% by weight; and the resultant gas fraction containing the target alkyl nitrite is collected from the reactor.
    • 亚硝酸烷基酯可以在工业规模上以高效率和低产率的副产物生产,其中将含氮氧化物的进料气体在蒸馏塔反应器中进入烷基醇液体,同时使液体馏分 在反应器中生产并含有烷基醇,通过包括反应器的下部的循环路径和冷却器,以除去在反应器中剧烈产生的反应热,同时控制循环液体馏分与总的重量比 将进料到反应器中的烷基醇的摩尔比为50:1至200:1,进料到反应器中并且包含在循环液体馏分中的总烷基醇与进料气体中的氮氧化物的摩尔比为20:1-150:1, 并且液体馏分中的烷基醇的含量为15〜60重量% 从反应器收集含有目标亚硝酸烷基酯的所得气体馏分。
    • 26. 发明授权
    • Process for continuously producing dimethyl carbonate
    • 连续生产碳酸二甲酯的方法
    • US5631396A
    • 1997-05-20
    • US647164
    • 1996-05-09
    • Keigo NishihiraShinichi YoshidaShuji TanakaYutaka Asada
    • Keigo NishihiraShinichi YoshidaShuji TanakaYutaka Asada
    • B01J27/13C07B61/00C07C68/00C07C68/08C07C69/96
    • C07C68/00
    • Dimethyl carbonate ((CH.sub.3 O).sub.2 CO) is continuously produced by a catalytic reaction (first step) of CO with CH.sub.3 NO.sub.2, with a significantly reduced loss of CH.sub.3 ONO by the process including a second step wherein (CH.sub.3 O).sub.2 CO in a reaction product gas of the first step is absorbed by dimethyl oxalate while contacting the resultant liquid fraction with CO to recover CH.sub.3 ONO, a third step wherein CH.sub.3 ONO is regenerated from NO in the condensed gas fraction produced in the second step and molecular oxygen and CH.sub.3 OH introduced into the third step, the resultant regenerated gas fraction being recycled and reused as a feed gas for the first step, and a fourth step wherein (CH.sub.3 O).sub.2 CO contained in the liquid fraction of the second step is collected.
    • 通过CO与CH3NO2的催化反应(第一步)连续制备碳酸二甲酯((CH 3 O)2 CO),通过包括第二步骤的CH 3 NOO的显着降低的损失,其中(CH 3 O)2 CO在反应产物气体中的 第一步被草酸二甲酯吸收,同时使所得液体馏分与CO接触以回收CH 3 NOO,第三步是在第二步产生的冷凝气体馏分中从NO再生CH3ONO,并将第三步中引入分子氧和CH3OH, 所产生的再生气体馏分被再循环并重新用作第一步骤的进料气体;以及第四步骤,其中收集第二步骤的液体馏分中所含的(CH 3 O)2 CO。