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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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金属氧化物吸附剂干法脱除气相as2o3实验研究
, PP. 476-482
Keywords: 气相as2o3,吸附剂,金属氧化物,干法吸附,cao,fe2o3
Abstract:
？利用自制as2o3连续发生装置,在固定床反应器上研究了金属氧化物cao、fe2o3、al2o3对煤燃烧高温烟气中气相砷的吸附特性。600~900℃温度的吸附实验结果表明,金属氧化物cao、fe2o3吸附剂对气相as2o3的吸附以化学吸附为主,随着吸附温度的升高,吸附量与吸附效率逐渐减小;3种金属氧化物的气相固砷能力依次为fe2o3>cao>al2o3;研究了气相砷浓度对吸附剂固砷量的影响特性,当气相砷体积浓度在4.5×10-6~13.5×10-6变化时,不会有吸附饱和的现象发生,当吸附剂种类一定时,吸附效率仅与吸附温度有关,对于不同气相砷浓度保持相同的吸附温度可以获得相同的吸附效率。
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