公开(公告)号：US20130298600A1

公开(公告)日：2013-11-14

申请号：US13979491

申请日：2011-01-17

申请人： Antoine Hernandez ,  Yuan-Jun Hu ,  Yanfang Liu ,  Jean-Marc Tsevery

发明人： Antoine Hernandez ,  Yuan-Jun Hu ,  Yanfang Liu ,  Jean-Marc Tsevery

IPC分类号： F25J3/08

CPC分类号： F25J3/08 ,  C01B3/506 ,  C07C7/09 ,  F25J3/0223 ,  F25J3/0233 ,  F25J3/0276 ,  F25J2200/70 ,  F25J2200/72 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2205/30 ,  F25J2210/06 ,  F25J2210/42 ,  F25J2215/02 ,  F25J2220/02 ,  F25J2260/02 ,  F25J2270/904 ,  C07C9/04

摘要： A process for the production of ammonia synthesis gas and pure methane by cryogenic separation of a feed gas containing at least 75% hydrogen as well as methane and nitrogen, the feed gas is cooled in a heat exchanger and partially condensed, the partially condensed feed is sent to a phase separator, the gas from the phase separator is sent to a nitrogen wash column, liquid nitrogen is sent to the top of the nitrogen wash column and ammonia synthesis gas is removed from the top of the nitrogen wash column, the liquid from the phase separator is expanded and sent to a separation column, a nitrogen enriched gas stream is removed from the top of the column and a nitrogen depleted liquid stream rich in methane is removed from the bottom of the column and the nitrogen depleted liquid stream rich in methane is vaporized to form a pure methane product.

摘要翻译： 通过低温分离含有至少75％氢气以及甲烷和氮气的进料气体来生产氨合成气和纯甲烷的方法，将进料气在热交换器中冷却并部分冷凝，部分冷凝的进料为 送到相分离器，将来自相分离器的气体送至氮气洗涤塔，将液氮送至氮气洗涤塔的顶部，氨氮合成气从氮气洗涤塔的顶部除去，液体从 将相分离器膨胀并送入分离塔，从塔顶部除去富氮气流，从塔的底部除去富含甲烷的贫氮液体，富含氮的液态物流 甲烷蒸发形成纯甲烷产物。