MULTICYCLE STUDY ON CHEMICAL-LOOPING COMBUSTION OF METHANE WITH CASO4 OXYGEN CARRIER IN A FIXED BED REACTOR
IntroductionChemical-looping combustion (CLC) has been proposed as a new technology that can be used to control the greenhouse gas emission with less energy loss1. A number of metal oxides have been extensively investigated as potential oxygen carriers in CLC of methane or natural gas in many research centers such as Tokyo Institute of Technology2,3, Chalmers University of Technology4-6, CSIC7,8, and Korea Institute of Energy Research9,10. However, these oxygen carriers also have some significant disadvantages for application in the CLC system, for example, high cost of these metal materials, the heavy carbon deposition problem, and potential heavy-metal pollution to the environment. Alstom Power Inc. Have started investigation on the feasibility of CaSO4 based oxygen carrier in CLC system11, but they still have not published key data yet. CANMET has also explored the use of CaSO4 as oxygen carrier in CLC12. As a novel oxygen carrier, CaSO4 has many advantages. It is much more environmentally sound as a nonmetal oxide. CaSO4 is cheaper due to vast gypsum resources all over the world. Compared with metal oxides,13 CaSO4 has a relatively higher oxygen capacity. A CLC system using two interconnected fluidized bed reactors is proposed for direct use of coal and other solid fuels such as biomass, solid wastes and cokes14. It is mainly composed of a bubbling fluidized bed, a fluidized bed, and a cyclone.
Qilei Song Rui Xiao Zhongyi Deng Laihong Shen Mingyao Zhang
School of Energy and Environment, Southeast University, Nanjing 210096, China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
135-136
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）