Sequential Capture of CO_2 and SO_2 in a Pressurized TGA Simulating FBC Conditions

PING   SUN; JOHN   R.   GRACE; C.   JIM   LIM; EDWARD   J.   ANTHONY

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Sequential Capture of CO_2 and SO_2 in a Pressurized TGA Simulating FBC Conditions

机译：在模拟FBC的加压TGA中顺序捕获CO_2和SO_2

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Four FBC-based processes were investigated as possible means of sequentially capturing SO_2 and CO_2. Sorbent performance is the key to their technical feasibility. Two sorbents (a limestone and a dolomite) were tested in a pressurized thermogravimetric analyzer (PTGA). The sorbent behaviors were explained based on complex interaction between carbonation, sulfation, and direct sulfation. The best option involved using limestone or dolomite as a SO_2-sorbent in a FBC combustor following cyclic CO_2 capture. Highly sintered limestone is a good sorbent for SO_2 because of the generation of macropores during calcination/ carbonation cycling.

机译：研究了四个基于FBC的过程，作为依次捕获SO_2和CO_2的可能方法。吸收性能是其技术可行性的关键。在加压热重分析仪（PTGA）中测试了两种吸附剂（石灰石和白云石）。基于碳酸化，硫酸化和直接硫酸化之间的复杂相互作用来解释吸附剂的行为。最佳选择涉及在循环CO_2捕集后在FBC燃烧器中使用石灰石或白云石作为SO_2吸附剂。高度烧结的石灰石是SO_2的良好吸附剂，因为在煅烧/碳酸化循环过程中会生成大孔。

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来源
《Environmental Science & Technology》 |2007年第8期|p.2943-2949|共7页
作者
PING SUN; JOHN R. GRACE; C. JIM LIM; EDWARD J. ANTHONY;
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作者单位

Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, Canada, V6T 1Z3;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类环境化学;
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Sequential Capture of CO_2 and SO_2 in a Pressurized TGA Simulating FBC Conditions

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