Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides
Abstract
A process for producing hydrogen comprising the steps of: (i) gasifying a fuel into a raw synthesis gas comprising CO, hydrogen, steam, sulfur and halide contaminants in the form of H.sub.2S, COS, and HX, wherein X is a halide; (ii) passing the raw synthesis gas through a water gas shift reactor (WGSR) into which CaO and steam are injected, the CaO reacting with the shifted gas to remove CO.sub.2, sulfur and halides in a solid-phase calcium-containing product comprising CaCO.sub.3, CaS and CaX.sub.2; (iii) separating the solid-phase calcium-containing product from an enriched gaseous hydrogen product; and (iv) regenerating the CaO by calcining the solid-phase calcium-containing product at a condition selected from the group consisting of: in the presence of steam, in the presence of CO.sub.2, in the presence of synthesis gas, in the presence of H.sub.2 and O.sub.2, under partial vacuum, and combinations thereof.
- Inventors:
- Issue Date:
- Research Org.:
- The Ohio State University Research Foundation (Columbus, OH)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1088984
- Patent Number(s):
- 8496909
- Application Number:
- 13/123,746
- Assignee:
- The Ohio State University Research Foundation (Columbus, OH)
- 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:
- FC26-03NT41853
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Ramkumar, Shwetha, and Fan, Liang-Shih. Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides. United States: N. p., 2013.
Web.
Ramkumar, Shwetha, & Fan, Liang-Shih. Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides. United States.
Ramkumar, Shwetha, and Fan, Liang-Shih. Tue .
"Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides". United States. https://www.osti.gov/servlets/purl/1088984.
@article{osti_1088984,
title = {Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides},
author = {Ramkumar, Shwetha and Fan, Liang-Shih},
abstractNote = {A process for producing hydrogen comprising the steps of: (i) gasifying a fuel into a raw synthesis gas comprising CO, hydrogen, steam, sulfur and halide contaminants in the form of H.sub.2S, COS, and HX, wherein X is a halide; (ii) passing the raw synthesis gas through a water gas shift reactor (WGSR) into which CaO and steam are injected, the CaO reacting with the shifted gas to remove CO.sub.2, sulfur and halides in a solid-phase calcium-containing product comprising CaCO.sub.3, CaS and CaX.sub.2; (iii) separating the solid-phase calcium-containing product from an enriched gaseous hydrogen product; and (iv) regenerating the CaO by calcining the solid-phase calcium-containing product at a condition selected from the group consisting of: in the presence of steam, in the presence of CO.sub.2, in the presence of synthesis gas, in the presence of H.sub.2 and O.sub.2, under partial vacuum, and combinations thereof.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {7}
}
Works referenced in this record:
Method of increasing the sulfation capacity of alkaline earth sorbents
patent, January 1982
- Shearer, John A.; Turner, Clarence B.; Johnson, Irving
- US Patent Document 4,312,280
The influence of particle shape on flow modes in pneumatic conveying
journal, February 2011
- Hilton, J. E.; Cleary, P. W.
- Chemical Engineering Science, Vol. 66, Issue 3