公开(公告)号：US06306354B1

公开(公告)日：2001-10-23

申请号：US08651160

申请日：1996-05-17

申请人： Donald F. Szydlowski ,  Thomas J. Corrigan ,  Dale W. Blake ,  Richard A. Sederquist

发明人： Donald F. Szydlowski ,  Thomas J. Corrigan ,  Dale W. Blake ,  Richard A. Sederquist

IPC分类号： F28D704

CPC分类号： C01B3/16 ,  B01J8/025 ,  B01J8/0285 ,  B01J2208/00141 ,  B01J2219/00083

摘要： A fuel cell power plant, generally, has a fuel cell stack for electrochemically converting a hydrocarbon fuel into electricity. In order for the hydrocarbon fuel to be used by the fuel cell stack, it must be steam reformed into a hydrogen-rich process gas. This process gas has a carbon monoxide level that would be detrimental to the fuel cell stack, so the process gas is passed through a shift converter to decrease the carbon monoxide level therein prior to feeding the process gas to the fuel cell stack. In order to decrease the level of carbon monoxide without the need to increase the size of the shift converter catalyst bed, or lower the temperature of the process gas as it enters the shift converter to an undesirably low temperature, the shift converter design that utilizes an upstream adiabatic zone and a downstream actively cooled zone. The actively cooled zone is cooled by a pressurized water coolant which boils as it cools the process gas stream. The coolant entering the shift converter is essentially a single phase water stream, and the coolant exiting the shift converter is a two phase water-steam mixture.

摘要翻译： 燃料电池发电厂通常具有用于将碳氢化合物燃料电化学转化成电的燃料电池堆。 为了使燃料电池堆使用碳氢化合物燃料，必须将其蒸汽重整成富氢处理气体。 该工艺气体具有对燃料电池堆不利的一氧化碳水平，因此在将工艺气体供给燃料电池堆之前，工艺气体通过变换器以降低其中的一氧化碳水平。 为了降低一氧化碳的水平，而不需要增加变换催化剂床的尺寸，或者当工艺气体进入转换器到不期望的低温时，其温度降低，使用 上游绝热带和下游主动冷却区。 主动冷却区域被加压的水冷却剂冷却，其在冷却工艺气体流时沸腾。 进入换档转换器的冷却剂基本上是单相水流，离开换档转换器的冷却剂是两相水蒸气混合物。