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 (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1224892
- Patent Number(s):
- 9174844
- Application Number:
- 13/892,681
- Assignee:
- The Ohio State University Research Foundation
- 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
- Resource Relation:
- Patent File Date: 2013 May 13
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
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., 2015.
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. Wed .
"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/1224892.
@article{osti_1224892,
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 = {Wed Nov 04 00:00:00 EST 2015},
month = {Wed Nov 04 00:00:00 EST 2015}
}
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Calcium looping process for high purity hydrogen production integrated with capture of carbon dioxide, sulfur and halides
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