低温等离子改性复合钙基吸附剂烟气脱硫实验研究

doi:10.16085/j.issn.1000-6613.2017.03.045

化工进展 ›› 2017, Vol. 36 ›› Issue (03): 1107-1112.DOI: 10.16085/j.issn.1000-6613.2017.03.045

低温等离子改性复合钙基吸附剂烟气脱硫实验研究

丁卫科, 段钰锋, 张君, 赵文广, 孙益, 刘猛

东南大学能源热转换及其过程测控教育部重点实验室, 江苏南京 210096

收稿日期:2016-07-18 修回日期:2016-08-31 出版日期:2017-03-05 发布日期:2017-03-05
通讯作者: 段钰锋,博士,教授,博士生导师。
作者简介:丁卫科(1990-),男,硕士研究生。E-mail:dwkskjh2011@163.com。
基金资助:
国家自然科学基金（51376046，51576044）及国家重点研发计划（2016YFC0201105、2016YFB0600604-02）项目。

Experimental study on desulfurization from flue gas by calcium-based composite sorbent with non-thermal plasma treated

DING Weike, DUAN Yufeng, ZHANG Jun, ZHAO Wenguang, SUN Yi, LIU Meng

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, Jiangsu, China

Received:2016-07-18 Revised:2016-08-31 Online:2017-03-05 Published:2017-03-05

摘要/Abstract

摘要：

低温等离子技术对固体吸附剂表面具有明显的改性作用，为研究低温等离子改性对复合钙基吸附剂脱硫的影响，并开发高效的脱硫吸附剂，分别制取了不同比例的活性炭/复合钙基吸附剂（AC/CaO），并在固定床吸附实验台上进行脱硫实验，探究配比、吸附温度、O₂浓度对SO₂吸附效果的影响。在优化的实验条件下，进一步探究低温等离子改性对复合钙基吸附剂脱硫的影响。结果表明，在最佳实验条件下，复合钙基吸附剂对SO₂的单位质量吸附量达到24.89mg/g，大于纯CaO的脱硫效果；通过低温等离子处理后的复合钙基吸附剂拥有更高的SO₂脱除效率，与未改性复合钙基吸附剂相比，单位质量吸附量提高了61.7%；在SO₂和NO的竞争脱除反应中，经过低温等离子改性后，复合钙基吸附剂脱除污染物向着有利于脱除SO₂的方向发展。

关键词: 低温等离子, 复合钙基吸附剂, 脱硫

Abstract:

Non-thermal plasma technology has significant modification effect on solid adsorbent surface. In order to study the effect of calcium-based sorbent modified by non-thermal plasma on desulfurization and develop a high efficient desulfurization adsorbent, the calcium-based sorbents with different ratios of activated carbon(AC/CaO) were prepared. The influences of AC to CaO ratio, adsorption temperature,O₂ concentration on the desulfurization of calcium based sorbent were studied in a fixed bed adsorption test bench. Under the optimized experimental conditions,the effects of non-thermal plasma modification on the desulfurization were further studied. Results showed that the maximum capacity of per mass calcium-based adsorption for SO₂ reached 24.89 mg/g in the optimal experimental conditions,which was greater than the pure CaO. The calcium-based sorbents treated with non-thermal plasma performed higher SO₂ removal efficiency. Compared with the unmodified calcium-based sorbent,SO₂ adsorption capacity per mass increased by 61.7% through non-thermal plasma modification. There are competitive removal reaction between SO₂ and NO with calcium-based sorbent,however,it was favorable for SO₂ removal after non-thermal plasma modification.

Key words: non-thermal plasma technology, calcium-based composite sorbent, desulfurization

中图分类号:

X511

丁卫科, 段钰锋, 张君, 赵文广, 孙益, 刘猛. 低温等离子改性复合钙基吸附剂烟气脱硫实验研究[J]. 化工进展, 2017, 36(03): 1107-1112.

DING Weike, DUAN Yufeng, ZHANG Jun, ZHAO Wenguang, SUN Yi, LIU Meng. Experimental study on desulfurization from flue gas by calcium-based composite sorbent with non-thermal plasma treated[J]. Chemical Industry and Engineering Progress, 2017, 36(03): 1107-1112.

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低温等离子改性复合钙基吸附剂烟气脱硫实验研究

Experimental study on desulfurization from flue gas by calcium-based composite sorbent with non-thermal plasma treated

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