| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a low temperature carbon dioxide removal process that enables effective heat transfer between a cold stream of a heat exchanger and a warm stream of flue gas. <P>SOLUTION: A low temperature carbon dioxide removal device includes: a supply source for supplying a compressed flue gas 100; a multi-stream heat exchanger for pre-cooling the compressed gas, which is configured to separate the compressed gas into a first compressed stream 130 and a second compressed stream 132; and a gas expansion device 114 located downstream of the multi-stream heat exchanger, the gas expansion device configured to expand the compressed gas into a first sub-stream 134 of carbon dioxide depleted gas and a second sub-stream 136 of carbon dioxide. A part of the first sub-stream and at least a part of the second sub-stream are recirculated into the multi-stream heat exchanger to pre-cool the compressed flue gas. <P>COPYRIGHT: (C)2013,JPO&INPIT |
