热等离子体煤制乙炔裂解气烃类循环过程分析

doi:10.11949/j.issn.0438-1157.20141790

化工学报 ›› 2015, Vol. 66 ›› Issue (6): 2227-2234.DOI: 10.11949/j.issn.0438-1157.20141790

热等离子体煤制乙炔裂解气烃类循环过程分析

程炎, 颜彬航, 李天阳, 程易

清华大学化学工程系, 北京 100084

收稿日期:2014-12-03 修回日期:2015-03-16 出版日期:2015-06-05 发布日期:2015-06-05
通讯作者: 程易
基金资助:
国家重点基础研究发展计划项目 (2012CB720301);国家科技支撑计划项目(2013BAF08B04)。

Process analysis of effluent hydrocarbon recycling for coal pyrolysis to acetylene in thermal plasma

CHENG Yan, YAN Binhang, LI Tianyang, CHENG Yi

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2014-12-03 Revised:2015-03-16 Online:2015-06-05 Published:2015-06-05
Supported by:
supported by the National Basic Research Program of China (2012CB720301) and the National Key Technology Research and Development Program of China(2013BAF08B04).

摘要/Abstract

摘要：

针对等离子体煤裂解制乙炔过程, 提出了将过程裂解气中副产的烃类分离, 循环输入等离子体反应器的新型工艺流程。基于新疆天业2 MW示范平台装置的典型运行参数, 采用热力学分析手段, 理论上分析了该工艺流程对于体系乙炔产量、单位质量乙炔煤耗和裂解电耗等的影响。结果表明, 裂解气烃类循环可以有效提高裂解气中乙炔浓度和产率, 同时减少煤粉输送气等流程气体的使用。典型操作条件下, 采用裂解气烃类循环工艺可以增加35.6%的乙炔收率和13.4%的氢气收率, 降低30%的单位乙炔煤耗和裂解电耗, 是高效可行的优化方案。

关键词: 多相反应器, 煤热解, 等离子体, 热力学, 碳氢化合物

Abstract:

Coal pyrolysis via thermal plasma provides an alternative path to realize the effective conversion from coal to acetylene. Recycling the hydrocarbons in the effluent gas to the plasma pyrolysis process is proposed in this work to improve the reactor performance. Thermodynamic analysis is made as the reference on the basis of the pilot-plant results of Xinjiang Tianye 2 MW plasma pyrolysis device. The comparison results show that the recycling of effluent hydrocarbons (except acetylene) can raise the volume fraction and mass flow rate of acetylene in the product gas. The hydrocarbons in cracked gas is ample to be used as the conveying and accelerating gas for coal and the protecting gas for plasma torch, which can reduce the input amount of working gas and optimize the whole gas flow of the process. Different optimization cases are discussed to compare the products (i.e., acetylene and hydrogen) output and the gas input of the thermal plasma pyrolysis system. The optimized results show that the recycling process is feasible and effective, with reduced coal consumption (30%) and pyrolysis energy consumption (30%) as well as increased acetylene yield (35.6%).

Key words: multiphase reactor, coal pyrolysis, plasma, thermodynamics, hydrocarbons

中图分类号:

TQ536.9

程炎, 颜彬航, 李天阳, 程易. 热等离子体煤制乙炔裂解气烃类循环过程分析[J]. 化工学报, 2015, 66(6): 2227-2234.

CHENG Yan, YAN Binhang, LI Tianyang, CHENG Yi. Process analysis of effluent hydrocarbon recycling for coal pyrolysis to acetylene in thermal plasma[J]. CIESC Journal, 2015, 66(6): 2227-2234.

参考文献 24

[1]	Chen Jiaqi(陈家琦), Cheng Yi(程易), Xiong Xinyang(熊新阳), Wu Changning(吴昌宁), Jin Yong(金涌). Research process of coal pyrolysis to acetylene in thermal plasma reactor [J]. Chemical Industry and Engineering Process(化工进展), 2009,28(3):361-367.
[2]	Bond R L, Galbraith I F, Ladner W R, Mcconnell G I T. Production of acetylene from coal using a plasma jet [J]. Nature, 1963, 200(491): 1313-1314.
[3]	Nicholson R, Littlewood K. Plasma pyrolysis of coal [J]. Nature, 1972, 236(5347): 397-400.
[4]	Kushner L M. Plasma technology in acetylene production in the US // Cheremisinoff P N, Farah O G, Ouellette R. Radio Frequency/ Radiation and Plasma Processing[C]. Lancaster: Technomic Publishing Inc., 1985:193-207.
[5]	Patrick Jr. A J, Gannon R E. 1 MW prototype arc reactor for processing coal to chemicals //Cheremisinoff P N, Farah O G, Ouellette R. Radio Frequency/Radiation and Plasma Processing[C]. Lancaster: Technomic Publishing Inc., 1985:144-154.
[6]	Shen Benxian(沈本贤), Wu Youqing(吴幼青), Gao Jinsheng(高晋生). Research on coal pyrolysis to acetylene via plasma [J]. Coal Conversion(煤炭转化), 1994, 17(4): 67-72.
[7]	Zhu Yuan(祝媛), Zhang Jiyu(张济宇), Xie Kechang(谢克昌). Research progress of coal pyrolysis to acetylene via thermal plasma in downer reactors [J]. Journal of Chemical Industry & Engineering(化学工业与工程技术), 2004, 25(1): 30-36.
[8]	Chen H, Xie K. Hydropyrolysis of light hydrocarbons in H2/Ar plasma jet [J]. Petrol. Sci. Technol., 2003, 21(5/6): 709-717.
[9]	Tian Y, Xie K, Zhu S, Fletcher T H. Simulation of coal pyrolysis in plasma jet by CPD model [J]. Energy & Fuels, 2001, 15(6): 1354-1358.
[10]	Xie Kechang(谢克昌). Coal Structure and Its Reactivity(煤的结构与反应性)[M]. Beijing: Science Press, 2002.
[11]	Chen J, Cheng Y. Process development and reactor analysis of coal pyrolysis to acetylene in hydrogen plasma reactor [J]. J. Chem. Eng. Jpn., 2009, 42(suppl. 1): 103-110.
[12]	Leutner H W, Stokes C S. Producing acetylene in a plasma arc [J]. Ind. Eng. Chem., 1961, 53(5): 341-342.
[13]	Anderson J E, Case L K. An analytical approach to plasma torch chemistry [J]. Ind. Eng. Chem. Process. Des. Dev., 1962, 1(3): 161-165.
[14]	Ibberson V J, Sen M. Plasma jet reactor design for hydrocarbon processing [J]. Chem. Eng. Res. Des., 1976, 54(4): 265-275.
[15]	Laflamme C B, Jurewicz J W, Gravelle D V, Boulos M I. Thermal plasma reactor for the processing of gaseous hydrocarbons [J]. Chem. Eng. Sci., 1990, 45(8): 2483-2487.
[16]	Fincke J R, Anderson R P, Hyde T, Detering B A, Wright R, Bewley R L, Haggard D C, Swank W D. Plasma thermal conversion of methane to acetylene [J]. Plasma. Chem. Plasma. P., 2002, 22(1): 105-136.
[17]	Libberson V J, Sen M. Plasma jet reaction design for hydrogen processing [J]. Transaction Insitution of Chemical Engineers, 1976, 54(4): 265-275.
[18]	Mosse A L, Gorbunov A V, Galinovskii A A, et al. Production of commercial hydrogen and acetylene from propane-butane and liquid hydrocarbons in an electric-arc plasma reactor [J]. Journal of Engineering Physics. Thermophysics, 2008, 4(81): 652-658.
[19]	Su Baogen(苏宝根), Fang Jianwei(房建威), Wen Guangdong(闻光东), Ma Jie(马杰), Xing Huabin(邢华斌), Ren Qilong(任其龙), Pyrolysis of propane to acetylene using high-power rotating arc hydrogen plasma [J]. CIESC Journal(化工学报), 2013, 64(11): 4039-4045.
[20]	Baddour R F, Iwasyk J M. Reactions between elemental carbon and hydrogen at temperatures above 2800 K [J]. Ind. Eng. Chem. Process Res. Dev., 1962, 1(3): 169.
[21]	Baddour R F, Blanchet J L. Reactions of carbon vapor with hydrogen and with methane in a high intensity arc [J]. Ind. Eng. Chem. Process Res. Dev., 1964, 3(3): 258-266.
[22]	Wu C, Chen J, Cheng Y. Thermodynamic analysis of coal pyrolysis to acetylene in hydrogen plasma reactor [J]. Fuel. Process Technol., 2010, 91(8): 823-830.
[23]	Yan B, Xu P, Cheng Y. Understanding coal/hydrocarbons pyrolysis in thermal plasma reactors by thermodynamic analysis [J]. Chem. Eng. Sci., 2012, 84: 31-39.
[24]	Reynolds W C. The element potential method for chemical equilibrium analysis: implementation in the interactive program STANJAN[R]. Stanford University, Department of Mechanical Engineering, 1986.

热等离子体煤制乙炔裂解气烃类循环过程分析

Process analysis of effluent hydrocarbon recycling for coal pyrolysis to acetylene in thermal plasma

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