Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Air Products and Chemicals, Inc., Allentown, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1176227
- Patent Number(s):
- 7695545
- Application Number:
- 11/685,992
- Assignee:
- Air Products and Chemicals, Inc. (Allentown, PA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
- DOE Contract Number:
- FC36-01GO11087
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 08 HYDROGEN
Citation Formats
Golden, Timothy Christopher, Weist, Jr., Edward Landis, Hufton, Jeffrey Raymond, and Novosat, Paul Anthony. Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration. United States: N. p., 2010.
Web.
Golden, Timothy Christopher, Weist, Jr., Edward Landis, Hufton, Jeffrey Raymond, & Novosat, Paul Anthony. Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration. United States.
Golden, Timothy Christopher, Weist, Jr., Edward Landis, Hufton, Jeffrey Raymond, and Novosat, Paul Anthony. Tue .
"Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration". United States. https://www.osti.gov/servlets/purl/1176227.
@article{osti_1176227,
title = {Adsorption process to recover hydrogen from feed gas mixtures having low hydrogen concentration},
author = {Golden, Timothy Christopher and Weist, Jr., Edward Landis and Hufton, Jeffrey Raymond and Novosat, Paul Anthony},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {4}
}