发明名称 |
UN PROCEDIMIENTO PARA LA PRODUCCION DE NITROGENO CON UN REN-DIMIENTO Y UNA PUREZA RELATIVAMENTE ALTOS |
摘要 |
<p>The present invention provides a process for the production of nitrogen at relatively high yield and purity by cryogenic rectifiction of feed air characterized by… (1) introducing the major portion of the feed air into a rectification column which is operating at a pressure in the range of from 241 to 1000 kPa (from 35 to 145 psia), and wherein feed air is separated into nitrogen-rich vapour and oxygen-enriched liquid;… (2) condensing a minor portion of the feed air, at a pressure greater than that at which the column is operating. by indirect heat exchange with oxygen-enriched liquid;… (3) introducing the resulting condensed minor portion of the feed air into the column at a point at least one tray above the point where the major portion of the feed air is introduced into the column;… (4) condensing a first portion of the nitrogen-rich vapour by indirect heat exchange with vapourizing oxygen-enriched liquid;… (5) passing at least some of the resulting condensed nitrogen-rich portion to the column at a point at least one tray above the point where the minor portion of the feed air is introduced into the column; and… (6) recovering substantially the entire remaining second portion of the nitrogen-rich vapour as product nitrogen.</p> |
申请公布号 |
ES548865(D0) |
申请公布日期 |
1986.12.01 |
申请号 |
ES19650005488 |
申请日期 |
1985.11.14 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
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分类号 |
F25J3/00;F25J3/04;(IPC1-7):C01B21/00 |
主分类号 |
F25J3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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