[1]窦元元,钟文琪,周冠文,等.煤加压低温热解制取焦油和煤气特性[J].东南大学学报(自然科学版),2018,48(1):85-91.[doi:10.3969/j.issn.1001-0505.2018.01.013]
 Dou Yuanyuan,Zhong Wenqi,Zhou Guanwen,et al.Characteristics of gas and oil production in low temperature coal pressurized pyrolysis[J].Journal of Southeast University (Natural Science Edition),2018,48(1):85-91.[doi:10.3969/j.issn.1001-0505.2018.01.013]
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煤加压低温热解制取焦油和煤气特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第1期
页码:
85-91
栏目:
能源与动力工程
出版日期:
2018-01-20

文章信息/Info

Title:
Characteristics of gas and oil production in low temperature coal pressurized pyrolysis
作者:
窦元元钟文琪周冠文刘倩殷俊平
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Dou Yuanyuan Zhong Wenqi Zhou Guanwen Liu Qian Yin Junping
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
煤炭 加压热解 低温热解 焦油 煤气
Keywords:
coal pressurized pyrolysis low temperature pyrolysis tar gas
分类号:
TK16
DOI:
10.3969/j.issn.1001-0505.2018.01.013
摘要:
为了提高煤在分级转化中的高效洁净利用,建立了煤加压热解实验系统.以陕西黑龙沟煤为对象,研究了不同温度(500~700 ℃)、压力(0.1~0.5 MPa)、气氛(N2与煤气)、粒径(0~3 mm与0~6 mm)对低温热解焦油、煤气产率和品质的影响规律.结果表明,随着温度升高,焦油产率先增加后减小,在温度为600 ℃时达到最高,煤气产率逐渐增加.随着压力的增加,焦油产率在N2气氛下降低,煤气气氛下升高;而热解煤气产率在N2气氛下升高,煤气气氛下降低;大颗粒煤热解焦油产率高于小颗粒煤的热解产率,但当压力达到0.5 MPa时,热解焦油与煤气产率几乎不受粒径影响.升高压力虽降低了热解煤气中CO与H2的含量,但促进更多轻质碳氢化合物(如CO2,CH4,C2H4,C2H6)的析出,因此提高了热解煤气热值,同时煤焦油品质也因焦油中苯、甲苯、苯酚及萘的实际收率增加而提高.
Abstract:
In order to improve the high efficiency and clean utilization of coal in graded conversion, an experimental system for coal pressurized pyrolysis was established. And taking the coal of Shaanxi Heilonggou as the object to study the effects of different temperatures(500 to 700 ℃), pressures(0.1 to 0.5 MPa), atmosphere(N2 and gas)and particle sizes(0 to 3 mm and 0 to 6 mm)on the yields and qualities of coal pyrolysis tar and gas at low temperature. The results show that with the increase of temperatures, the tar yield increases firstly and then decreases when reaching the highest at 600 ℃, the gas yield increases. With the increase of the pressure, the pyrolysis tar yield increases in the atmosphere gas and decreases in nitrogen atmosphere while the pyrolysis gas yield reduces in the gas atmosphere and increases in nitrogen atmosphere. The yield of pyrolysis tar is higher than that of small granular coal, but when the pressure reaches 0.5 MPa, the pyrolysis tar and the gas yield are almost unaffected by particle sizes. In the meantime, the increase in pressures reduces the amount of CO and H2 in the pyrolysis gas, but promotes the precipitation of more light hydrocarbons(such as CO2, CH4, C2H4, C2H6), increasing the calorific value of pyrolysis gas. Meanwhile, improving the quality of tar with the increase of the actual yield of benzene, toluene, phenol, and naphthalene in pyrolysis tar.

参考文献/References:

[1] Zhang S Y, Lu J F, Zhang J S, et al. Effect of pyrolysis intensity on the reactivity of coal char[J]. Energy & Fuels, 2008, 22(5): 3213-3221. DOI:10.1021/ef800245z.
[2] 崔银萍,秦玲丽,杜娟,等.煤热解产物的组成及其影响因素分析[J].煤化工,2007,35(2):10-15. DOI:10.3969/j.issn.1005-9598.2007.02.003.
Cui Yinping, Qin Lingli, Du Juan, et al. Products distribution and its influencing factors for coal pyrolysis[J]. Coal Chemical Industry, 2007, 35(2): 10-15. DOI:10.3969/j.issn.1005-9598.2007.02.003. (in Chinese)
[3] Gadiou R, Bouzidi Y, Prado G. The devolatilisation of millimetre sized coal particles at high heating rate: The influence of pressure on the structure and reactivity of the char[J]. Fuel, 2002, 81(16): 2121-2130. DOI:10.1016/s0016-2361(02)00144-8.
[4] 高晋生.煤的热解、炼焦和煤焦油加工[M].北京:化学工业出版社,2010:1-3.
[5] 段立强,林汝谋,蔡睿贤,等.整体煤气化联合循环(IGCC)底循环系统变工况特性[J].中国电机工程学报,2002,22(2):26-30. DOI:10.3321/j.issn:0258-8013.2002.02.006.
Duan Liqiang, Lin Rumou, Cai Ruixian, et al. Off-design characteristic of bottom cycle system in IGCC[J]. Proceedings of the CSEE, 2002, 22(2): 26-30. DOI:10.3321/j.issn:0258-8013.2002.02.006. (in Chinese)
[6] Wall T F, Liu G S, Wu H W, et al. The effects of pressure on coal reactions during pulverised coal combustion and gasification[J]. Progress in Energy & Combustion Science, 2002, 28(5): 405-433. DOI:10.1016/s0360-1285(02)00007-2.
[7] 许凯,胡松,向军,等.胜利褐煤的加压热解特性分析[J].中国电机工程学报,2011,31(29):15-20.
  Xu Kai, Hu Song, Xiang Jun, et al. Analysis on the behavior of pressurized pyrolysis of Shengli lignite[J]. Proceedings of the CSEE, 2011, 31(29): 15-20.(in Chinese)
[8] Canel M, Mlslrllogˇlu Z, Slnagˇ A. Hydropyrolysis of a Turkish lignite(Tunçbilek)and effect of temperature and pressure on product distribution[J]. Energy Conversion and Management, 2005, 46(13): 2185-2197. DOI:10.1016/j.enconman.2004.10.007.
[9] 范晓雷,张薇,周志杰,等.热解压力及气氛对神府煤焦气化反应活性的影响[J].燃料化学学报,2005,33(5):530-533.
  Fan Xiaolei, Zhang Wei, Zhou Zhijie, et al. Effects of pyrolysis pressure and atmosphere on gasification reactivity of Shenfu char[J]. Journal of Fuel Chemistry and Technology, 2005, 33(5): 530-533.(in Chinese)
[10] Seebauer V, Petek J, Staudinger G. Effects of particle size, heating rate and pressure on measurement of pyrolysis kinetics by thermogravimetric analysis[J]. Fuel, 1997, 76(13): 1277-1282. DOI:10.1016/s0016-2361(97)00106-3.
[11] Fidalgo B, van Niekerk D, Millan M. The effect of syngas on tar quality and quantity in pyrolysis of a typical South African inertinite-rich coal[J]. Fuel, 2014, 134: 90-96. DOI:10.1016/j.fuel.2014.05.032.
[12] 梁玉河,张碧芳,柳作良.在固定床中煤加压热解特性研究[J].武汉钢铁学院学报,1990,13(1):68-75.
  Liang Yuhe, Zhang Bifang, Liu Zuoliang. Pressurized pyrolytic properties of coal in fixed bed[J]. Journal of Wuhan Iron and Steel University, 1990, 13(1): 68-75.(in Chinese)
[13] 白宗庆,李文,尉迟唯,等.褐煤在合成气气氛下的低温热解及半焦燃烧特性[J].中国矿业大学学报,2011,40(5):726-732.
  Bai Zongqing, Li Wen, Yu Chiwei, et al. Low temperature pyrolysis of lignite in the presence of syngas and combustion characteristics of derived char[J]. Journal of China University of Mining & Technology, 2011, 40(5): 726-732.(in Chinese)
[14] 樊义龙,王宁波,徐红东,等.低温煤焦油产率和性质影响因素的研究[J].洁净煤技术,2010,16(6):36-39. DOI:10.3969/j.issn.1006-6772.2010.06.010.
Fan Yilong, Wang Ningbo, Xu Hongdong, et al. Analysis influencing factors of yield and properties of low-temperature tar[J]. Journal of Clean Coal Technology, 2010, 16(6): 36-39. DOI:10.3969/j.issn.1006-6772.2010.06.010. (in Chinese)
[15] 孙会青,曲思建,王利斌.低温煤焦油生产加工利用的现状[J].洁净煤技术,2008,14(5):34-38. DOI:10.3969/j.issn.1006-6772.2008.05.010.
Sun Huiqing, Qu Sijian, Wang Libin. Present situation on production and processing use of low temperature coal-tar[J]. Journal of Clean Coal Technology, 2008, 14(5): 34-38. DOI:10.3969/j.issn.1006-6772.2008.05.010. (in Chinese)
[16] 韩德虎,胡耀青,王进尚,等.煤热解影响因素分析研究[J].煤炭技术,2011,30(7):164-166.
  Han Dehu, Hu Yaoqing, Wang Jinshang, et al. Study and analysis of influence factors of coal pyrolysis[J]. Coal Technology, 2011, 30(7): 164-166.(in Chinese)
[17] 张晓方,金玲,熊燃,等.热分解气氛对流化床煤热解制油的影响[J].化工学报,2009,60(9):2299-2307. DOI:10.3321/j.issn:0438-1157.2009.09.024.
Zhang Xiaofang, Jin Ling, Xiong Ran, et al. Effect of reaction atmosphere on tar production from coal pyrolysis in fluidized bed reactor[J]. CIESC Journal, 2009, 60(9): 2299-2307. DOI:10.3321/j.issn:0438-1157.2009.09.024. (in Chinese)
[18] Liao H, Li B, Zhang B. Co-pyrolysis of coal with hydrogen-rich gases. 1. Coal pyrolysis under coke-oven gas and synthesis gas[J]. Fuel, 1998, 77(8): 847-851. DOI:10.1016/s0016-2361(97)00257-3.
[19] 熊源泉,刘前鑫,章名耀,等.煤的加压热解试验研究[J].燃烧科学与技术,1997,3(2):135-142.
  Xiong Yuanquan, Liu Qianxin, Zhang Mingyao, et al. The experimental research of pressurized coal pyrolysis[J]. Journal of Combustion Science and Technology, 1997, 3(2): 135-142.(in Chinese)
[20] Cousins A, Paterson N, Dugwell D R, et al. An investigation of the reactivity of chars formed in fluidized bed gasifiers: The effect of reaction conditions and particle size on coal char reactivity[J]. Energy & fuels, 2006, 20(6): 2489-2497. DOI:10.1021/ef0600661.
[21] 刘源,杨伏生,贺新福,等.影响煤炭热解产物分布的因素[J].湖南科技大学学报(自然科学版),2016,31(1):19-24. DOI:10.13582/j.cnki.1672-9102.2016.01.004.
Liu Yuan, Yang Fusheng, He Xinfu, et al. The influence factors of products distribution from coal pyrolysis[J]. Journal of Hunan University of Science & Technology(Natural Science Edition), 2016, 31(1): 19-24. DOI:10.13582/j.cnki.1672-9102.2016.01.004. (in Chinese)
[22] 李云,胡正阳.温度和压力对煤热解过程中多物转化影响的研究现状[J].内蒙古石油化工,2010,36(24):7-9. DOI:10.3969/j.issn.1006-7981.2010.24.004.
Li Yun, Hu Zhengyang. Research status of temperature and pressure on the coal pyrolysis process multi-conversion effects[J]. Journal of Inner Mongolia Petroleum and Chemical Engineering, 2010, 36(24): 7-9. DOI:10.3969/j.issn.1006-7981.2010.24.004. (in Chinese)

备注/Memo

备注/Memo:
收稿日期: 2017-08-08.
作者简介: 窦元元(1992—),女,硕士生;钟文琪(联系人),男,博士,教授,博士生导师,wqzhong@seu.edu.cn.
基金项目: 国家重点研发资助项目(2016YFB0600802)、江苏省普通高校研究生科研创新计划资助项目(SJLX16_0037)、江苏省环保科研课题资助项目(2015018).
引用本文: 窦元元,钟文琪,周冠文,等.煤加压低温热解制取焦油和煤气特性[J].东南大学学报(自然科学版),2018,48(1):85-91. DOI:10.3969/j.issn.1001-0505.2018.01.013.
更新日期/Last Update: 2018-01-20