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| Experimental study of enhancement of demercuration from flue gas by calcium-based composite sorbent with non-thermal plasma treated |
| BAI Li-yi1, DUAN Yu-feng1, DING Wei-ke1, HU Peng1, WEI Hong-qi1, ZHANG Jun2 |
1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China;
2. School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000, China |
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Abstract The influence of SO2, O2 and non-thermal plasma treatedon mercury removal by sorbent of high porosity and high specific surface area was investigated in a fixed bed bench. The mechanism of demercuration was analyzed by different characterization methods. As non-thermal plasma treatment increases relative content of oxygen-containing functional groups on the surface of sorbent, the study showed that the adsorption of mercury removal significant increases. In 0.07% SO2+6% O2atmosphere, the efficiency of mercury removal rose from 23.7% to 91.2% compared with which in the non-oxygen atmosphere. As active sites of the adsorption of Hg0, hydroxyl group and ester group improved the efficiency of demercuration. But the effect of carbonyl group was not obvious. It was due to the presence of O2 that the unsaturated bonds of carbon atoms was increased. With the increase of SO2 concentration to 0.15%, the competitive mechanism was the main effect. The efficiency of mercury removal dropped to 23.3%.
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Received: 06 September 2017
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| [1] |
佚名.《能源发展"十三五"规划》介绍(二)[J]. 能源与节能, 2017,(7):1-1.
|
| [2] |
姚婷,洪亚光,段钰锋,等.KI改性凹凸棒管道喷射脱汞实验研究[J]. 中国电机工程学报, 2015,35(22):5787-5793.
|
| [3] |
Evan J. Granite, Henry W. Pennline, Richard A. Hargis. Novel Sorbents for mercury removal from flue gas[J]. Industrial & Engineering Chemical Research, 2000,39(4):1020-1029.
|
| [4] |
张安超,张洪良,宋军,等.Mn-Co/MCM-41吸附剂表征及脱除烟气中单质汞研究[J]. 中国环境科学, 2015,35(5):1319-1327.
|
| [5] |
Sjostrom S, Ebner T, Ley T, et al. Assessing sorbents for mercury control in coal-combustion fluegas[J]. Air Waste Management Association, 2002,52:902-911.
|
| [6] |
赵鹏飞,郭欣,郑楚光.活性炭及氯改性活性炭吸附单质汞的机制研究[J]. 中国电机工程学报, 2010,30(23):40-44.
|
| [7] |
高鹏,向军,张安超.壳聚糖吸附剂脱除燃煤模拟烟气中汞的试验研究[J]. 中国环境科学, 2010,30(6):733-737.
|
| [8] |
洪亚光,段钰锋,朱纯,等.载溴高硫石油焦活性炭脱汞实验研究[J]. 中国电机工程学报, 2014,34(11):1762-1768.
|
| [9] |
张星,李彩亭,樊小鹏,等CeCl3/活性炭纤维去除模拟烟气中单质汞的实验研究[J]. 中国环境科学, 2012,32(5):816-821.
|
| [10] |
Zeng X, Xu Y, Zhang B, et al. Elemental mercury adsorption and regeneration performance of sorbents FeMnOx enhanced via non-thermal plasma[J]. Chemical Engineering Journal, 2017,309:503-512.
|
| [11] |
Xu F, Luo Z, Cao W, et al. Simultaneous oxidation of NO, SO2 and Hg0 from flue gas by pulsed corona discharge[J]. Journal of Environmental Sciences, 2009,21(3):328-332.
|
| [12] |
Ko K B, Byun Y, Cho M, et al. Influence of HCl on oxidation of gaseous elemental mercury by dielectric barrier discharge process[J]. Chemosphere, 2008,71(9):1674-1682.
|
| [13] |
Zhang J, Duan Y, Zhou Q, et al. Adsorptive removal of gas-phase mercury by oxygen non-thermal plasma modified activated carbon[J]. Chemical Engineering Journal, 2016,294:281-289.
|
| [14] |
Zhang B, Xu P, Qiu Y, et al. Increasing oxygen functional groups of activated carbon with non-thermal plasma to enhance mercury removal efficiency for flue gases[J]. Chemical Engineering Journal, 2015,263:1-8.
|
| [15] |
丁卫科,段钰锋,张君,等.低温等离子改性复合钙基吸附剂烟气脱汞脱硫实验研究[J]. 中国电机工程学报, 2017,36(3):3802-3808.
|
| [16] |
Liu J, Qu W, Joo S W, et al. Effect of SO2 on mercury binding on carbonaceous surfaces[J]. Chemical Engineering Journal, 2012, 184:163-167.
|
| [17] |
Ma J, Li C, Zhao L, et al. Study on removal of elemental mercury from simulated flue gas over activated coke treated by acid[J]. Applied Surface Science, 2015,329:292-300.
|
| [18] |
朱纯,段钰锋,冒咏秋,等.烟气组分对氯化铵改性活性炭汞吸附特性的影响[J]. 工程热物理学报, 2013,34(10):1982-1985.
|
| [19] |
郑楚光.煤燃烧汞的排放及控制[M]. 北京:科学出版社, 2010:93-94.
|
| [20] |
Li Y, Duan Y, Wang H, et al. Effects of Acidic Gases on Mercury Adsorption by Activated Carbon in Simulated Oxy-Fuel Combustion Flue Gas[J]. Energy & Fuels, 2017,31(9):9745-9751.
|
| [21] |
陈明明,段钰锋,周强,等.烟气组分对汞吸附影响的程序升温脱附[J]. 化工进展, 2016,35(12):4065-4071.
|
| [22] |
Lopez-Anton M A, Yuan Y, Perry R, et al. Analysis of mercury species present during coal combustion by thermal desorption[J]. Fuel, 2010,89(3):629-634.
|
| [23] |
Rumayor M, Fernandez-Miranda N, Lopez-Anton M A, et al. Application of mercury temperature programmed desorption (Hg-TPD) to ascertain mercury/char interactions[J]. Fuel Processing Technology, 2015,132:9-14.
|
| [24] |
Rumayor M, Diazsomoano M, Lopezanton M A, et al. Mercury compounds characterization by thermal desorption.[J]. Talanta, 2013,114(3):318-322.
|
| [25] |
Puziy A M, Poddubnaya O I, Socha R P, et al. XPS and NMR studies of phosphoric acid activated carbons[J]. Carbon, 2008,46(15):2113-2123.
|
| [26] |
Sun P, Zhang B, Zeng X, et al. Deep study on effects of activated carbon's oxygen functional groups for elemental mercury adsorption using temperature programmed desorption method[J]. Fuel, 2017,200:100-106.
|
| [27] |
李海龙,王晓刚,李立清,等.SO2对CeO2-TiO2催化剂上汞氧化的双面影响研究[J]. 工程热物理学报, 2013,34(9):1775-1778.
|
| [28] |
Chang J C S, Ghorishi S B. Simulation and evaluation of elemental mercury concentration increase in flue gas across a wet scrubber[J]. Environmental science & technology, 2003,37(24):5763-5766.
|
| [1] |
HU Peng, DUAN Yu-feng, CHEN Ya-nan, ZHOU Qiang, ZHU Chun, DING Wei-ke, LI Chun-feng, LIU Meng, WANG Shuang-qun. Characteristics of denitrification and mercury removal by Mo-Mn/TiO2 catalysts[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(2): 523-531. |
|
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