发明名称 |
HIGH PRESSURE NITROGEN PRODUCTION CRYOGENIC PROCESS |
摘要 |
The present invention is a cryogenic process to produce medium to high pressure gaseous nitrogen without the use of a nitrogen product compressor. The process is an improvement to a conventional nitrogen generator with waste expander. The present invention reboils crude liquid oxygen from the main distillation column in two stages at different pressures and uses a small number of trays above one of the reboilers. The use of the trays above one of the reboilers allows collection of a pressurized stream with a composition similar to air. This pressurized stream is recycled to an intermediate stage of the main air compressor.
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申请公布号 |
CA2028252(C) |
申请公布日期 |
1994.03.22 |
申请号 |
CA19902028252 |
申请日期 |
1990.10.22 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC., |
发明人 |
AGRAWAL, RAKESH |
分类号 |
F25J3/04;(IPC1-7):F25J3/04 |
主分类号 |
F25J3/04 |
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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