Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption
Abstract
Bulk separation of the gaseous components of multi-component gases provided by the gasification of coal including hydrogen, carbon monoxide, methane, and acid gases (carbon dioxide plus hydrogen sulfide) are selectively adsorbed by a pressure swing adsorption technique using activated carbon zeolite or a combination thereof as the adsorbent. By charging a column containing the adsorbent with a gas mixture and pressurizing the column to a pressure sufficient to cause the adsorption of the gases and then reducing the partial pressure of the contents of the column, the gases are selectively and sequentially desorbed. Hydrogen, the least absorbable gas of the gaseous mixture, is the first gas to be desorbed and is removed from the column in a co-current direction followed by the carbon monoxide, hydrogen and methane. With the pressure in the column reduced to about atmospheric pressure the column is evacuated in a countercurrent direction to remove the acid gases from the column. The present invention is particularly advantageous as a producer of high purity hydrogen from gaseous products of coal gasification and as an acid gas scrubber. 2 figs., 2 tabs.
- Inventors:
- Issue Date:
- Research Org.:
- State Univ. of New York, Buffalo (USA)
- OSTI Identifier:
- 5541674
- Application Number:
- ON: DE86013768
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- AC21-83MC20183
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 08 HYDROGEN; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 01 COAL, LIGNITE, AND PEAT; ACTIVATED CARBON; SORPTIVE PROPERTIES; CARBON DIOXIDE; ADSORPTION; DESORPTION; REMOVAL; SEPARATION PROCESSES; CARBON MONOXIDE; HYDROGEN; HYDROGEN PRODUCTION; COAL GASIFICATION; HYDROGEN SULFIDES; METHANE; ZEOLITES; FLOWSHEETS; MOLECULAR SIEVES; PRESSURE DEPENDENCE; SHIFT PROCESSES; ADSORBENTS; ALKANES; CARBON; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DIAGRAMS; ELEMENTS; GASIFICATION; HYDROCARBONS; HYDROGEN COMPOUNDS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; MINERALS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SORPTION; SULFIDES; SULFUR COMPOUNDS; SURFACE PROPERTIES; THERMOCHEMICAL PROCESSES; 080107* - Hydrogen- Production- Coal Gasification; 400105 - Separation Procedures; 010404 - Coal, Lignite, & Peat- Gasification
Citation Formats
Ghate, M R, and Yang, R T. Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption. United States: N. p., 1985.
Web.
Ghate, M R, & Yang, R T. Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption. United States.
Ghate, M R, and Yang, R T. Thu .
"Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption". United States.
@article{osti_5541674,
title = {Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption},
author = {Ghate, M R and Yang, R T},
abstractNote = {Bulk separation of the gaseous components of multi-component gases provided by the gasification of coal including hydrogen, carbon monoxide, methane, and acid gases (carbon dioxide plus hydrogen sulfide) are selectively adsorbed by a pressure swing adsorption technique using activated carbon zeolite or a combination thereof as the adsorbent. By charging a column containing the adsorbent with a gas mixture and pressurizing the column to a pressure sufficient to cause the adsorption of the gases and then reducing the partial pressure of the contents of the column, the gases are selectively and sequentially desorbed. Hydrogen, the least absorbable gas of the gaseous mixture, is the first gas to be desorbed and is removed from the column in a co-current direction followed by the carbon monoxide, hydrogen and methane. With the pressure in the column reduced to about atmospheric pressure the column is evacuated in a countercurrent direction to remove the acid gases from the column. The present invention is particularly advantageous as a producer of high purity hydrogen from gaseous products of coal gasification and as an acid gas scrubber. 2 figs., 2 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 03 00:00:00 EDT 1985},
month = {Thu Oct 03 00:00:00 EDT 1985}
}