烟气脱硫活性炭微波再生特性的实验研究

张立强; 蒋海涛; 马春元; 董勇

烟气脱硫活性炭微波再生特性的实验研究

山东大学燃煤污染物减排国家工程实验室, 山东济南 250061

基金项目: 国家自然科学基金(51206097); 山东省科学技术发展计划(2009GG2GC06003)。

详细信息

通讯作者:
董勇,男,博士,教授,E-mail:dongy@sdu.edu.Cn

中图分类号: TK09
计量
- 文章访问数: 2279
- HTML全文浏览量: 26
- PDF下载量: 690
- 被引次数: 0
出版历程
- 收稿日期: 2012-06-06
- 修回日期: 2012-08-13
- 刊出日期: 2012-11-30

Microwave regeneration characteristics of activated carbon for flue gas desulfurization

National Engineering Laboratory for Coal-Fired Pollutants Emission Reduction, Shandong University, Jinan 250061, China

摘要

摘要: 研究了烟气脱硫活性炭的微波再生特性。通过扫描电镜、N₂吸附、元素分析、Boehm滴定表征微波再生对活性炭孔隙结构和表面化学性质的影响,分析微波再生对活性炭吸附烟气中SO₂的影响规律。结果表明,微波再生功率越高,SO₂再生曲线越窄,峰值浓度越高,有利于载硫活性炭的解吸和高浓度再生气的获取。微波再生对活性炭起到了活化作用,使活性炭的孔结构变狭长。随着微波再生功率的提高,活性炭的微孔比表面积、微孔孔容增加,酸性官能团含量上升,碱性官能团含量下降。100 W再生后,活性炭再生不完全,残留的H₂SO₄影响了活性炭的吸附,活性炭的SO₂吸附性能下降。200、300、400 W工况下,活性炭的SO₂吸附容量均得到提高,且随着再生功率的提高,活性炭的碱性官能团含量上升,微孔比表面积、微孔孔容增加,SO₂吸附性能逐渐增强。
- 活性炭 /
- 微波再生 /
- 孔隙结构 /
- 表面官能团 /
- SO₂
Abstract: Microwave regeneration of SO₂-loaded activated carbon (AC) and its consequent adsorption characteristics were studied. The effects of microwave regeneration on the pore texture and surface chemistry of activated carbon were examined by scanning electron microscopy, low-temperature N₂ adsorption, elemental analysis and Boehm titration, and its effect on the adsorption of SO₂ contained in flue gas passing over activated carbon was analyzed. The results show that increasing microwave regenerative power produces a narrower SO₂ regeneration curve with higher peak concentrations, which aids both the regeneration of activated carbon and recovery of a high concentration of SO₂. The carbon pores become elongated during the regeneration process. With increasing microwave power, the micropore specific surface area, volume, and the proportion of surface acidic functional groups all increase, while the surface alkaline functional groups decrease. Incomplete regeneration occurrs at 100 W due to the inhibiting effect of residual H₂SO₄ on adsorptive capacity. At 200, 300 and 400 W, the adsorptive capacity for SO₂ exceeds that of the original AC.
- activated carbon /
- microwave regeneration /
- pore texture /
- surface functional groups /
- SO₂

HTML全文

参考文献(27)

张守玉, 房倚天, 黄戒介, 颜振明, 张建民, 王洋. 活性焦吸附氧化法脱除烟道气中二氧化硫[J]. 燃料化学学报, 1999, 27(6): 465-468. (ZHANG Shou-yu, FANG Yi-tian, HUANG Jie-jie, YAN Zhen-ming, ZHANG Jian-min, WANG Yang. Eliminating sulfur dioxide from flue gas by adsorption and oxidation on active coke[J]. Journal of Fuel Chemistry and Technology, 1999,27(6): 465-468.)

马双忱, 靳义净, 金鑫, 姚娟娟, 张博, 董松, 石荣雪. 烟气共存成分对微波辐照活性炭同时脱硫脱硝的影响研究[J]. 燃料化学学报, 2011, 39(6): 460-464. (MA Shuang-chen, JIN Yi-jing, JIN Xin, YAO Juan-juan, ZHANG Bo, DONG Song, SHI Rong-xue. Influences of co-existing components in flue gas on simultaneous desulfurization and denitrification using microwave irradiation over activated carbon[J]. Journal of Fuel Chemistry and Technology, 2011, 39(6): 460-464.)

赵毅, 韩静, 马天忠. 活性炭纤维负载TiO₂同时脱硫脱硝实验研究[J]. 中国电机工程学报, 2009, 29(11): 44-49. (ZHAO Yi, HAN Jing, MA Tian-zhong. Experimental study on simultaneous desulfurization and denitrification by supporting TiO₂ on activated carbon fiber[J]. Proceedings of the CSEE, 2009, 29(11): 44-49.)

林金春, 高恒, 温建华, 林秀兰. 陈孝云. 微波加热在活性炭再生中应用研究进展[J]. 科学技术与工程, 2008, 8(23): 1671-1819. (LIN Jin-chun, GAO Heng, WEN Jian-hua, LIN Xiu-lan, CHEN Xiao-yun. Application of microwave heating in regenerating activated carbon[J]. Science Technology and Engineering, 2008, 8(23): 1671-1819.)

孙康, 蒋剑春. 活性炭再生方法及工艺设备的研究进展[J]. 生物质化学工程, 2008, 42(6): 55-60. (SUN Kang, JIANG Jian-chun. Research progress of technologies and equipments for regeneration of activated carbon[J]. Biomass Chemical Engineering, 2008, 42(6): 55-60).

YUEN F K, HAMEED B H. Recent developments in the preparation and regeneration of activated carbons by microwaves[J]. Adv Colloid Intreface Sci, 2009, 149(1/2): 19-27.

BOUDOU J P, ALONZO A M, TASCON J M. Introduction of acidic groups at the surface of activated carbon by microwave-induced oxygen plasma at low pressure[J]. Carbon, 2000, 38(7): 1021-1029.

MENÉNDEZ J A, MENÉNDEZ E M, IGLESIAS M J, GARC'IA A, PIS J J. Modification of the surface chemistry of active carbons by means of microwave-induced treatments[J]. Carbon, 1999, 37(7): 1115-1121.

LIU Q, ZHENG T, LI N, WANG P, ABULIKEMU G. Modification of bamboo-based activated carbon using microwave radiation and its effects on the adsorption of methylene blue[J]. Appl Surf Sci, 2010, 256(10): 3309-3315.

马双忱, 马宵颖, 郭天祥, 赵毅. 微波改性活性炭用于烟气脱硫脱硝的实验研究[J]. 燃料化学学报, 2010, 38(6): 739-744. (MA Shuang-chen, MA Xiao-ying, GUO Tian-xiang, ZHAO Yi. Experimental study on desulfurization and denitrification from flue gas over modified activated carbon using microwave irradiation[J]. Journal of Fuel Chemistry and Technology, 2010, 38(6): 739-744.)

牛秀丽, 房倚天, 张永奇, 王洋. 流化床快速制不定形活性焦脱除烟气中SO₂的研究[J]. 燃料化学学报, 2008, 33(4): 465-468. (NIU Xiu-li, FANG Yi-tian, ZHANG Yong-qi, WANG Yang. Study on SO₂ removal from flue gas by active coke prepared from fluidized bed reactor[J]. Journal of Fuel Chemistry and Technology, 2008, 33(4): 465-468.)

马双忱, 赵毅, 马宵颖, 郭天祥, 刘皓磊, 姚为方. 微波诱导催化还原脱硫脱硝实验研究[J]. 中国电机工程学报, 2006, 26(18): 121-126. (MA Shuang-chen, ZHAO Yi, MA Xiao-ying, GUO Tian-xiang, LIU Hao-lei, YAO Wei-fang. Experimental study on microwave induced catalyzed reduction for desulfurization and denitrification[J]. Proceedings of the CSEE, 2006, 26(18): 121-126.)

张守玉, 朱延钰, 杨之媛, 吕红, 黄戒介, 王洋. 煤质活性焦用于脱除烟道气中的SO₂[J]. 燃烧科学与技术, 2002, 8(1): 38-43. (ZHANG Shou-yu, ZHU Ting-yu, YANG Zhi-yuan, LU Hong, HUANG Jie-jie, WANG Yang. Application of active coke derived from coal for SO₂-removal from flue gas[J]. Journal of Combustion Science and Technology, 2002, 8(1): 38-43.)

BRADSHAW S M, van WYK E J, de SWARDT J B. Preliminary economic assessment of microwave regeneration of activated carbon for the carbon in pulp process [J]. JMPEE, 1997, 32(3): 131-144.

QUAN X, LIU X, BO L. Regeneration of acid orange 7-exhausted granular activated carbons with microwave irradiation [J]. Water Res, 2004, 38(20): 4484-4490.

ANIA C O, PARRA J B, MENÉNDEZ J A, PIS J J. Microwave-assisted regeneration of activated carbons loaded with pharmaceuticals [J]. Water Res, 2007, 41(15): 3299-3306.

ANIA C O, PARRA J B, MENÉNDEZ J A, PIS J J. Effect of microwave and conventional regeneration on the microporous and mesoporous network and on the adsorptive capacity of activated carbons[J]. Microporous Mesoporous Mater, 2005, 85(6): 7-15.

孙文强. 改性活性炭吸附SO₂及微波场中再生的研究. 大连: 大连理工大学, 2010. (SUN Wen-qiang. Study on SO₂ absorption by modified activated carbon and regeneration in microwave field. Dalian: Dalian University of Technology, 2010.)

杨斌武, 蒋文举, 朱晓帆, 刘小燕, 何媛媛. 微波辐照法再生载硫活性炭的研究[J]. 化工环保, 2003, 23(3): 125-128. (YANG Bin-bin, JIANG Wen-ju, ZHU Xiao-fan, LIU Xiao-yan, HE Yuan-yuan. Study on regeneration of SO₂-loaded activated carbon by microwave irradiation[J]. Environmental Protection of Chemical Industry, 2003, 23(3): 125-128.)

牛志睿, 黄学敏. 吸附SO₂饱和活性碳纤维的微波解析性能研究[J]. 延安大学学报(自然科学版), 2008, 27(2): 1098-1103. (NIU Zhi-rui, HUANG Xue-min. On the regeneration of activated carbon fiber with SO₂ by microwave radiation[J]. Journal of Yanan University, 2008, 27(2): 1098-1103.)

李开喜, 凌立成, 刘朗, 张碧江, 刘振宇. 热处理改性的活性炭纤维的脱硫活性[J]. 催化学报, 2000, 20(3): 264-268. (LI Kai-xi, LING Li-cheng, LIU Lang, ZHANG Bi-jiang, LIU Zhen-yu. Desulfurization activity of activated carbon fiber modified by heat treatment[J]. Chinese Journal of Catalysis, 2000, 20(3): 264-26.)

潘志铭. 微波加热中的温度检测[J]. 深圳大学学报(理工版), 2002, 19(2): 81-84. (PAN Zhi-ming. Temperature measurement in the application of microwave heating[J]. Journal of Shenzhen University(Science & Engineering), 2002, 19(2): 81-84.)

李兵, 张立强, 蒋海涛, 王志强, 马春元. 粉末活性炭低温吸附氧化NO的动力学研究[J]. 煤炭学报, 2011, 36(12): 2092-2096. (LI Bing, ZHANG Li-qiang, JIANG Hai-tao, WANG Zhi-qiang, MA Chun-yuan.Study on kinetics of adsorption and oxidation of NO over powder activated carbon [J]. Journal of China Coal Society, 2011, 36(12): 2092-2096.)

张守玉, 向银花, 赵建涛. 活性炭质材料脱硫活性探讨[J]. 煤炭转化, 2002, 25(2): 29-34. (ZHANG Shou-yu, XIANG Yin-hua, ZHAO Jian-tao. Study on the mechanism of flue gas desulphrization by carbonaceous materials[J]. Coal Conversion, 2002, 25(2): 29-34.)

DAVINI P. Adsorption and desorption of SO₂ on active carbon-The effect of surface basic groups[J]. Carbon, 1990, 28(4): 565-571.

BOEHM H P. Some aspects of the surface chemistry of carbon blacks and other carbons[J]. Carbon, 1994, 32(5): 759-769.

单晓梅, 张文辉, 杜铭华, 朱书全. 湿氧化和热处理对煤基活性炭吸附SO₂的影响[J]. 煤炭学报, 2004, 28(2): 208-212. (SHAN Xiao-mei, ZHANG Wen-hui, DU Ming-hua, ZHU Shu-quan. Effect of wet oxidation and heat-treatment on the SO₂ adsorption capacity for coal-based activated carbon[J]. Journal of China Coal Society, 2004, 28(2): 208-212.)

施引文献

资源附件(0)

访问统计