The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2013
Filed:
Oct. 13, 2009
Shwetha Ramkumar, Columbus, OH (US);
Liang-shih Fan, Columbus, OH (US);
Shwetha Ramkumar, Columbus, OH (US);
Liang-Shih Fan, Columbus, OH (US);
The Ohio State University Research Foundation, Columbus, OH (US);
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 HS, 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, sulfur and halides in a solid-phase calcium-containing product comprising CaCO, CaS and CaX; (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, in the presence of synthesis gas, in the presence of Hand O, under partial vacuum, and combinations thereof.