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

Title: CO.sub.2 separation from low-temperature flue gases

Abstract

Two methods are provide for the separation of carbon dioxide from the flue gases. The first method utilizes a phase-separating moiety dissolved in an aqueous solution of a basic moiety to capture carbon dioxide. The second method utilizes a phase-separating moiety as a suspended solid in an aqueous solution of a basic moiety to capture carbon dioxide. The first method takes advantage of the surface-independent nature of the CO.sub.2 absorption reactions in a homogeneous aqueous system. The second method also provides permanent sequestration of the carbon dioxide. Both methods incorporate the kinetic rate enhancements of amine-based scrubbing while eliminating the need to heat the entire amine solution (80% water) in order to regenerate and release CO.sub.2. Both methods also take advantage of the low-regeneration temperatures of CO.sub.2-bearing mineral systems such as Na.sub.2CO.sub.3/NaHCO.sub.3 and K.sub.2CO.sub.3/KHCO.sub.3.

Inventors:
 [1];  [2];  [3];  [4]
  1. Irwin, PA
  2. Salem, MA
  3. Monroeville, PA
  4. Bethel Park, PA
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1017440
Patent Number(s):
7842126
Application Number:
12/241,430
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
DOE Contract Number:  
NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Dilmore, Robert, Allen, Douglas, Soong, Yee, and Hedges, Sheila. CO.sub.2 separation from low-temperature flue gases. United States: N. p., 2010. Web.
Dilmore, Robert, Allen, Douglas, Soong, Yee, & Hedges, Sheila. CO.sub.2 separation from low-temperature flue gases. United States.
Dilmore, Robert, Allen, Douglas, Soong, Yee, and Hedges, Sheila. Tue . "CO.sub.2 separation from low-temperature flue gases". United States. https://www.osti.gov/servlets/purl/1017440.
@article{osti_1017440,
title = {CO.sub.2 separation from low-temperature flue gases},
author = {Dilmore, Robert and Allen, Douglas and Soong, Yee and Hedges, Sheila},
abstractNote = {Two methods are provide for the separation of carbon dioxide from the flue gases. The first method utilizes a phase-separating moiety dissolved in an aqueous solution of a basic moiety to capture carbon dioxide. The second method utilizes a phase-separating moiety as a suspended solid in an aqueous solution of a basic moiety to capture carbon dioxide. The first method takes advantage of the surface-independent nature of the CO.sub.2 absorption reactions in a homogeneous aqueous system. The second method also provides permanent sequestration of the carbon dioxide. Both methods incorporate the kinetic rate enhancements of amine-based scrubbing while eliminating the need to heat the entire amine solution (80% water) in order to regenerate and release CO.sub.2. Both methods also take advantage of the low-regeneration temperatures of CO.sub.2-bearing mineral systems such as Na.sub.2CO.sub.3/NaHCO.sub.3 and K.sub.2CO.sub.3/KHCO.sub.3.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}

Patent:

Save / Share: