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    • 70. 发明专利
    • Method of refining natural gas and natural gas refining system
    • 精炼天然气和天然气精炼系统的方法
    • JP2009019192A
    • 2009-01-29
    • JP2008123344
    • 2008-05-09
    • Hitachi Ltd株式会社日立製作所
    • ASANO TAKASHIHINO YUKOKAMOSHITA MAMORU
    • C10L3/10F25J1/00F25J3/02F25J3/08
    • F25J3/061F25J3/0615F25J3/0635F25J3/064F25J3/067F25J2205/10F25J2205/20F25J2220/66Y02C10/12
    • PROBLEM TO BE SOLVED: To provide a method and system of refining natural gas that improves the quality of liquefied natural gas and enables separation and recovery of hydrocarbons other than methane. SOLUTION: The method of refining natural gas containing methane; any other hydrocarbon selected from the group consisting of ethane, ethylene, propane, propylene, n-butane, isobutane, 1-butene, n-pentane, and isopentane; carbon dioxide; and hydrogen sulfide, includes adjusting a pressure and temperature of the natural gas so that the methane is in the gas phase, the other hydrocarbon is in the liquid phase, and the carbon dioxide and the hydrogen sulfide are in the solid phase, respectively; separating the natural gas, of which the pressure and temperature has been adjusted, into a gas containing the methane and a suspension liquid; and separating the separated suspension liquid into a liquid containing the other hydrocarbon and a solid containing the carbon dioxide and the hydrogen sulfide. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供改善天然气质量的方法和系统,其提高液化天然气的质量,并能够分离和回收甲烷以外的烃。 解决方案:精炼含甲烷天然气的方法; 选自乙烷,乙烯,丙烷,丙烯,正丁烷,异丁烷,1-丁烯,正戊烷和异戊烷的任何其它烃; 二氧化碳; 和硫化氢,包括调节天然气的压力和温度,使得甲烷处于气相,其它烃处于液相,二氧化碳和硫化氢分别为固相; 将已经调节了压力和温度的天然气分离成含有甲烷和悬浮液的气体; 并将分离的悬浮液分离成含有其它烃的液体和含有二氧化碳和硫化氢的固体。 版权所有(C)2009,JPO&INPIT