发明授权
US07695545B2 Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration
有权
从具有低氢浓度的原料气混合物中回收氢的吸附方法
- 专利标题: Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration
- 专利标题(中): 从具有低氢浓度的原料气混合物中回收氢的吸附方法
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申请号: US11685992申请日: 2007-03-14
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公开(公告)号: US07695545B2公开(公告)日: 2010-04-13
- 发明人: Timothy Christopher Golden , Edward Landis Weist, Jr. , Jeffrey Raymond Hufton , Paul Anthony Novosat
- 申请人: Timothy Christopher Golden , Edward Landis Weist, Jr. , Jeffrey Raymond Hufton , Paul Anthony Novosat
- 申请人地址: US PA Allentown
- 专利权人: Air Products and Chemicals, Inc.
- 当前专利权人: Air Products and Chemicals, Inc.
- 当前专利权人地址: US PA Allentown
- 代理商 Bryan C. Hoke, Jr.
- 主分类号: B01D53/02
- IPC分类号: B01D53/02
摘要:
A process for selectively separating hydrogen from at least one more strongly adsorbable component in a plurality of adsorption beds to produce a hydrogen-rich product gas from a low hydrogen concentration feed with a high recovery rate. Each of the plurality of adsorption beds subjected to a repetitive cycle. The process comprises an adsorption step for producing the hydrogen-rich product from a feed gas mixture comprising 5% to 50% hydrogen, at least two pressure equalization by void space gas withdrawal steps, a provide purge step resulting in a first pressure decrease, a blowdown step resulting in a second pressure decrease, a purge step, at least two pressure equalization by void space gas introduction steps, and a repressurization step. The second pressure decrease is at least 2 times greater than the first pressure decrease.