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Integration of ITM Syngas and High Temperature CO2 Adsorption for Clean Power Generation with CO2 Capture

IP.com Disclosure Number: IPCOM000019655D
Publication Date: 2003-Sep-24
Document File: 3 page(s) / 34K

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The IP.com Prior Art Database

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Integration of ITM Syngas and High Temperature CO2 Adsorption for Clean Power Generation with CO2 Capture

Abstract

Synthesis gas, a mixture of hydrogen and carbon monoxide, can be produced by oxidatively-reforming a hydrocarbon-containing stream which passes on one side of a non-porous, mixed conducting ceramic membrane, with oxygen from a hot, oxygen-containing gas, preferably air, which passes on the other side of the ceramic membrane. These membranes, known in the art generically as ion transport membranes (ITMs), utilize an oxygen chemical potential gradient across the membrane to cause oxygen ions to migrate through the membrane.

Membranes can be fabricated as tubes or flat plates that are arranged in modules for efficient contact with the hot air and hydrocarbon-containing streams. Synthesis gas and nitrogen-enriched non-permeate products are withdrawn from the modules. A comprehensive review of ion transport membranes is given by M. Stoukides in Catalysis Reviews - Science and Engineering, 42(1&2), 2000.

The objective of the process described here is to produce a hydrogen product suitable for use as a fuel (gas turbines, fuel cells, etc.) while also capturing all or most of the carbon dioxide for possible sequestration. A simplified representation of the process appears as Figure 1.

A natural gas or other hydrocarbon-containing stream is preheated, pretreated to remove contaminants, and mixed with steam. The preheated steam and natural gas mixture is fed to an ITM Syn...