发明名称 |
Hydrogen and carbon dioxide coproduction apparatus |
摘要 |
Highly purified gaseous hydrogen and liquid carbon dioxide are produced from a steam reformer/shift converter by passing the effluent from the latter through a multibed hydrogen PSA unit followed by an uncoupled carbon dioxide PSA unit. The carbon dioxide PSA unit produces a hydrogen-rich stream which is recycled to the feed to the steam reformer, a carbon dioxide-rich recycle stream which is recycled to the carbon dioxide PSA unit feed and a carbon dioxide-rich product stream which is introduced under pressure to a liquifier. A waste stream from the liquifier is recycled to the carbon dioxide PSA unit feed. A portion of the carbon dioxide-rich product stream is withdrawn from the compressor at a stage such that its pressure is higher than that of the carbon dioxide PSA unit and returned thereto as a cocurrent purge preceding bed regeneration to obtain product.
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申请公布号 |
US5000925(A) |
申请公布日期 |
1991.03.19 |
申请号 |
US19900522343 |
申请日期 |
1990.05.11 |
申请人 |
THE BOC GROUP, INC. |
发明人 |
KRISHNAMURTHY, RAMACHANDRAN;MALIK, VIRGINIA A.;STOKLEY, ALAN G. |
分类号 |
B01D53/047;C01B3/48;C01B3/56;C01B31/20;F25J3/02 |
主分类号 |
B01D53/047 |
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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