(787g) CO2 Emission Reduction By the Reverse Boudard Reaction - Coal Gasification With CO2
AIChE Annual Meeting
Friday, November 8, 2013 - 10:24am to 10:43am
CO2 capture and sequestration from coal-fired power plants is an energy intensive process, both in CAPEX and OPEX. CO2 emission reduction by gasification of coal with CO2 is an alternative method for future new coal-fired power plants. The reaction of carbon with CO2 giving CO is also called the reverse Boudouard reaction. This reaction is highly endothermic; however, energy from other co-existing exothermic reactions can be used to reduce the overall energy consumption. We developed a new process for this application . Initial coal gasification under thermal plasma conditions makes the reaction more favorable. With the presence of water vapor, this process is able to produce syngas with CO2and coal as the feed. This paper will also address the subsequent syngas cleanup step.
 Maoqi Feng, Francis Huang, Richard Johnson, Enhancement of syngas production in coal gasification with CO2 conversion under plasma conditions, US Patent 8,435,478 (issue May 7, 2013).