skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption

Abstract

The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.

Inventors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175576
Patent Number(s):
6,974,496
Application Number:
10/609,501
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
DOE Contract Number:
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Wegeng, Robert S., Rassat, Scot D., Stenkamp, Victoria S., TeGrotenhuis, Ward E., Matson, Dean W., Drost, M. Kevin, and Viswanathan, Vilayanur V.. Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption. United States: N. p., 2005. Web.
Wegeng, Robert S., Rassat, Scot D., Stenkamp, Victoria S., TeGrotenhuis, Ward E., Matson, Dean W., Drost, M. Kevin, & Viswanathan, Vilayanur V.. Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption. United States.
Wegeng, Robert S., Rassat, Scot D., Stenkamp, Victoria S., TeGrotenhuis, Ward E., Matson, Dean W., Drost, M. Kevin, and Viswanathan, Vilayanur V.. Tue . "Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption". United States. doi:. https://www.osti.gov/servlets/purl/1175576.
@article{osti_1175576,
title = {Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption},
author = {Wegeng, Robert S. and Rassat, Scot D. and Stenkamp, Victoria S. and TeGrotenhuis, Ward E. and Matson, Dean W. and Drost, M. Kevin and Viswanathan, Vilayanur V.},
abstractNote = {The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 13 00:00:00 EST 2005},
month = {Tue Dec 13 00:00:00 EST 2005}
}

Patent:

Save / Share:
  • The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. In another aspect, the apparatus ormore » methods utilize heat exchange channels of varying lengths that have volumes controlled to provide equal heat fluxes. Methods of fuel cell startup are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.« less
  • The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include themore » ability to use (typically) 30-100 times less adsorbent compared to conventional systems.« less
  • This patent describes a hydrocarbon conversion process. It comprises: passing a reactor feed; passing at least a portion of the reactor product through a first adsorption zone; passing the first adsorption effluent stream through a second adsorption zone containing solid adsorbent heating at least a substantial portion of the second adsorption effluent to a temperature sufficient to desorb at least a portion of C{sub 6} + hydrocarbon fraction, reducing the pressure in the second adsorption zone to a pressure sufficient to desorb at least a portion of C{sub 1}--C{sub 5} hydrocarbon fraction; passing a portion of the first desorption effluentmore » stream to the reaction zone to comprise the recycle stream.« less
  • 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 themore » 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 parity hydrogen from gaseous products of coal gasification and as an acid gas scrubber.« less
  • 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 themore » 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.« less