Integrated catalyst-heat exchanger and method of oxidizing carbon monoxide in a hydrogen reformer of a vehicle fuel cell system

申请公布号：: US2004126297(A1)
申请号：: US20020330782
申请日期：: 2002.12.27
申请公布日期：: 2004.07.01
申请人：: VISTEON GLOBAL TECHNOLOGIES, INC.
发明人：: CHOI SAEMIN;CHOKKARAM SIVARAJ;LINNE CRAIG;MENG ZHU;ALBAROUDI HOMAM;PAPOULIS EVANGELOS
分类号：: B01D53/62;C01B3/58;H01M8/06;(IPC1-7):B01D53/62
主分类号：: B01D53/62
摘要：: The present invention involves a system and method of oxidizing carbon monoxide in a preferential oxidizer for a hydrogen reformer of a fuel cell system for vehicular and stationary applications. The method includes providing a heat exchange system of the preferential oxidizer, wherein the heat exchange system has a single integrated oxidation reaction region in which an oxidation catalyst is disposed for oxidizing carbon monoxide to carbon dioxide. The method further includes introducing a hydrogen-rich reformate to the heat exchange system, wherein the hydrogen-rich reformate is at a predetermined temperature and has a first content of carbon monoxide. The method further includes injecting oxygen to the hydrogen-rich reformate, wherein the oxygen is at a predetermined stoichiometric oxygen/carbon monoxide ratio. The method further includes oxidizing at least a portion of the carbon monoxide to carbon dioxide with the oxidation catalyst when the hydrogen-rich reformate and oxygen contact the single integrated oxidation reaction region so that the hydrogen-rich reformate has a second content of carbon monoxide less than the first content at the predetermined temperature. The method further includes maintaining the hydrogen-rich reformate at the predetermined temperature when the carbon monoxide is oxidized in the single integrated reaction region of the heat exchange system.