Patent ID: 6464955
Filing Date: 2002-10-15
Classification: B01D,B01J,C01B,Y02E,Y02P

Abstract:
A process for forming a product gas containing a member selected from the group consisting of hydrogen, carbon monoxide, and mixtures thereof, comprising:(a) passing a feed gas comprising a member selected from the group consisting of steam, carbon dioxide, and mixtures thereof, through particulates comprising an oxygen ion-conducting ceramic to form said product gas by abstracting oxygen from said member of said feed gas to at least partially saturate said ceramic particulates with oxygen, wherein said hydrogen in said product gas is formed from said steam and said carbon monoxide in said product gas is formed from said carbon dioxide, and said ceramic particulates are maintained at a temperature between about 300 and about 1400Â° C. and at an absolute pressure between about 0.5 and about 50 bars; (b) removing oxygen from said ceramic particulates by performing at least one of: increasing said temperature, decreasing said pressure, passing a reducing agent through said ceramic particulates, or combinations thereof; and alternating between steps (a) and (b).