研究论文
刁永发,郑显玉,陈昌和.氨水洗涤脱除CO2温室气体的机理研究[J].环境科学学报,2003,23(6):753-757
氨水洗涤脱除CO2温室气体的机理研究
- Study on removal mechanism of CO2 greenhouse gas by ammonia scrubbing
- 基金项目：国家重点基础研究项目(No.G19990222);中国博士后科学基金项目(中博基2002)
- 作者
- 单位
- 刁永发
- 清华大学热能工程系,煤的清洁燃烧国家重点实验室,北京 100084
- 郑显玉
- 清华大学热能工程系,煤的清洁燃烧国家重点实验室,北京 100084
- 陈昌和
- 清华大学热能工程系,煤的清洁燃烧国家重点实验室,北京 100084
- 摘要：利用氨水洗涤电厂模拟烟气中的CO2温室气体,在合适的操作条件下,可以实现很高的CO2脱除率(达到95%以上);当入口CO2体积分数分别为10%、12%、14%,氨水吸收CO2的脱除率超过90%时,进口CO2体积分数对氨水吸收CO2脱除率的影响不大;随着氨水浓度的增加,氨水吸收CO2的吸收速率和达到平衡状态时CO2的脱除率都要增大;氨水洗涤CO2温室气体的动力学研究表明:在实验所涉及的温度区间内,其化学反应符合Arrhenius规律.
- Abstract：This paper described our research results on a novel CO2 removal approach using ammonia for scrubbing.Under proper conditions the removal efficiencies were stable and was in the range of 95%-99%.When inlet concentrations of CO2 were 10%,12%,14%(V/V),respectively,and the removal efficiencies were higher than 90%,the influence of inlet CO2 concentration on the removal efficiency was minimal.It indicates that high potential of scrubbing with a fast absorption rate by ammonia occurred in the system.The results indicated also that temperature had a key role in the CO2 removal and the removal efficiency reached its highest at about 33℃.From the kinetics of scrubbing CO2 greenhouse gas by ammonia,it showed that,at experimental temperatures,the chemical reaction could be described by Arrhenius' Law.
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