公开(公告)号：US4305733A

公开(公告)日：1981-12-15

申请号：US127886

申请日：1980-03-06

申请人： Walter Scholz ,  Gerhard Ranke ,  Hans Becker ,  Boris G. Bergo ,  Alexander I. Grizenko ,  Alexej V. Frolov

发明人： Walter Scholz ,  Gerhard Ranke ,  Hans Becker ,  Boris G. Bergo ,  Alexander I. Grizenko ,  Alexej V. Frolov

IPC分类号： B01D53/14 ,  C07C7/00 ,  F25J3/08 ,  C10L3/00

CPC分类号： B01D53/1462 ,  C07C7/005 ,  Y02C10/06 ,  Y02P20/152 ,  Y10S62/928

摘要： A method for the recovery of a methane-rich natural gas from a natural gas containing, apart from methane, also hydrogen sulfide, carbondioxide, higher hydrocarbons and, in most cases, organosulfur compounds. According to the invention a hydrocarbon fraction of C.sub.4 hydrocarbons and higher is naturally removed from the natural gas which is then subjected to a selective scrubbing for the removal of hydrogen sulfide with a regeneratable extraction, of scrubbing liquid. Next a C.sub.3 fraction is removed, the remaining gas being scrubbed with a second regeneratable washing agent, for the removal of carbondioxide to leave the methane-rich gas.

摘要翻译： 从除了甲烷以外还含有硫化氢，二氧化碳，高级烃以及大多数情况下含有有机硫化合物的天然气中回收富含甲烷的天然气的方法。 根据本发明，C4烃和更高级的烃馏分天然地从天然气中除去，然后对天然气进行选择性洗涤以用可再生萃取物除去洗涤液。 接下来，除去C3级分，剩下的气体用第二可再生洗涤剂洗涤，用于去除二氧化碳以离开富含甲烷的气体。