Simulation of CaO regeneration process with CaSO4 oxygen carrier

doi:10.3969/j.issn.0438-1157.2012.12.045

CIESC Journal ›› 2012, Vol. 63 ›› Issue (12): 4055-4061.DOI: 10.3969/j.issn.0438-1157.2012.12.045

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Simulation of CaO regeneration process with CaSO₄ oxygen carrier

FAN Tengfei^1,2, CHENG Xiaolei^1,2, WANG Bo¹, TIAN Wendong¹, XIAO Yunhan¹

1. Research Center for Clean Energy and Power(Institute of Engineering Thermophysics), Chinese Academy of Sciences, Beijing 100190, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100080, China

Received:2012-05-04 Revised:2012-08-16 Online:2012-09-14 Published:2012-12-05
Supported by:
supported by the High-tech Research and Development Program of China(2008AA05A302)and the International S&T Cooperation Program of China(2010DFB70560).

应用CaSO₄载氧体燃烧技术的CaO再生过程

樊腾飞^1,2, 程晓磊^1,2, 王波¹, 田文栋¹, 肖云汉¹

1. 中国科学院先进能源动力重点实验室(工程热物理研究所), 北京 100190;
2. 中国科学院研究生院, 北京 100080

通讯作者: 王波
作者简介:樊腾飞(1982-),男,博士研究生。
基金资助:
国家高技术研究发展计划项目(2008AA05A302);国际科技合作项目(2010DFB70560)。

Abstract

Abstract: Coke gasification,CaSO₄ chemical-looping combustion and CaCO₃ decomposition were integrated into a CaO regeneration reactor in the simulation performed with Aspen Plus.The effects of temperature(700-1200℃),pressure(0.1-4 MPa)on the required minimum H₂O flow,coke flow,equilibrium product yields,pollution gas emissions,heat transfer between reactors and solids circulation rate were investigated.The minimum H₂O flow and coke flow reduced with increasing temperature and the declining pressure.The percentages of H₂S in product gases without H₂O decreased with increasing temperature and declining pressure,while the percentage of SO₂ had a reverse trend.The percentage of H₂S+SO₂ decreased first then increased with increasing temperature.H₂S was the main gas pollutant at a lower temperature and was replaced by SO₂ as temperature increased,which was explained by the side reactions of CaSO₄.The heat and recycled solids between the reactors decreased while solids circulation rate increased with increasing temperature,but the heat and recycled solids between the reactors increased while solids circulation rate decreased with increasing pressure.

Key words: CaSO₄ oxygen carrier, chemical-looping combustion, CaO regeneration

关键词: CaSO₄载氧体, 化学链燃烧, CaO再生

CLC Number:

TK121

FAN Tengfei, CHENG Xiaolei, WANG Bo, TIAN Wendong, XIAO Yunhan. Simulation of CaO regeneration process with CaSO₄ oxygen carrier[J]. CIESC Journal, 2012, 63(12): 4055-4061.

樊腾飞, 程晓磊, 王波, 田文栋, 肖云汉. 应用CaSO₄载氧体燃烧技术的CaO再生过程[J]. 化工学报, 2012, 63(12): 4055-4061.

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Simulation of CaO regeneration process with CaSO₄ oxygen carrier

应用CaSO₄载氧体燃烧技术的CaO再生过程

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