A STUDY ON CAO-BASED CATALYTIC TAR REFORMING IN A CHEMICAL LOOPING GASIFICATION SYSTEM
Use of calcium oxide (CaO) in a chemical looping gasification (CLG) system is basically aimed for continuous hydrogen production with in-process CO2 capteure.Previous studies showed that CaO, when added to a biomass steam gasifier, could play the role of both CO2 sorbent and tar reforming catalyst, and thereby produce more hydrogen.However, most of these works focused on the former role with little attention to tar reforming aspect of CaO.Therefore, this work aims primarily at studying the tar reforming effect of in-bed CaO in a CaO-based chemical looping gasification (CaO-CLG).To this end, an in-depth analysis of the effect of CaO on tar composition is presented.To explore the effect of CaO on tar production and reforming, a baseline study with sand as a bed material was conducted for comparison.Results show that shifting the tar species from higher to fewer ring structures as a result of in-bed CaO can reduce tar dew point by 11 ℃ and tar carcinogenic potential by almost 60%.
Jakkapong Udomsirichakorn Prabir Basu P.Abdul Salam Bishnu Acharya
Energy Field of Study,Asian Institute of Technology,P.O.Box 4,Klong Luang,Pathumthani 12120,Thailand Mechanical Engineering Department,Dalhousie University,Halifax B3J 1Z1,Canada Greenfield Research Incorporated,P.O.Box 25018,Halifax B3M 1N8,Canada
国际会议
The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)
北京
英文
835-841
2014-05-14（万方平台首次上网日期，不代表论文的发表时间）