Pyrolysis Experiment and Kinetics Study of Ethanol and Dimethyl Ether in Shock Tube

doi:10.7652/xjtuxb202111009

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Pyrolysis Experiment and Kinetics Study of Ethanol and Dimethyl Ether in Shock Tube

更新时间：2025-07-09

- Pyrolysis Experiment and Kinetics Study of Ethanol and Dimethyl Ether in Shock Tube
- Vol. 55, Issue 11, Pages: 77-86(2021)
- 作者机构：
  
  河南科技大学车辆与交通工程学院,河南,洛阳,471003
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202111009
  CLC： TK401
- Online First：10 November 2021，
  
  Published：2021
- 稿件说明：
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Pyrolysis Experiment and Kinetics Study of Ethanol and Dimethyl Ether in Shock Tube[J]. 2021, 55(11): 77-86.
DOI：

Pyrolysis Experiment and Kinetics Study of Ethanol and Dimethyl Ether in Shock Tube[J]. 2021, 55(11): 77-86. DOI： 10.7652/xjtuxb202111009.

摘要

为探究含氧燃料在高温低压条件下的裂解特性

以乙醇和二甲醚为研究对象

利用激波管开展了两种燃料的裂解试验

通过气相色谱仪测量了乙醇和二甲醚在1 200～1 700 K和0.20～0.25 MPa条件下4种热解产物甲烷、乙炔、乙烯和甲醛的浓度

利用直接关系图法构建了详细的组合简化模型(DME-Ethanol模型)

并通过该模型进行产率和敏感性分析。结果表明:乙醇和二甲醚热解过程中的主要产物分别为乙烯和甲烷; 乙醇和二甲醚在热解过程中均主要是通过由H和CH

自由基等引发的夺氢反应消耗

二甲醚中特有的对称结构使得其通过单分子解离反应消耗的比例大于乙醇

更多的甲基增大了二甲醚热解体系的反应性; DME-Ethanol模型对两种燃料裂解产物的浓度预测误差在10%以内。

Abstract

In order to explore the pyrolysis characteristics of oxygenated fuels under high temperature and low pressure conditions

ethanol and dimethyl ether(DME)were used as the research objects in shock tubes to conduct the pyrolysis experiment. The concentrations of four pyrolysis products of methane

acetylene

ethylene and formaldehyde in ethanol and dimethyl ether pyrolysis at 1 200-1 700 K and 0.20-0.25 MPa were tested by gas chromatograph. Also

direct relationship graph method was used to establish a detailed

combined and simplified model(DME-Ethanol model)

then ROP analysis and sensitivity analysis were performed. The results show that dimethyl ether and ethanol are mainly consumed by the H-abstraction reactions initiated by H and CH

etc.; the proport

ion of dimethyl ether consumed by unimolecular dissociation reactions is larger than that of ethanol due to its unique symmetrical structure. More methyl groups increase the reactivity of dimethyl ether pyrolysis. The concentration prediction errors of the DME-Ethanol model for the pyrolysis products are within 10%.

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references

YOON S S, ANH D H, CHUNG S H. Synergistic effect of mixing dimethyl ether with methane, ethane, propane, and ethylene fuels on polycyclic aromatic hydrocarbon and soot formation [J]. Combustion and Flame, 2008, 154(3): 368-377.

宋清双, 李跟宝, 周龙保, 等. 柴油机燃用二甲醚/柴油混合燃料时的性能与排放研究 [J]. 西安交通大学学报, 2006, 40(3): 294-297.

SONG Qingshuang, LI Gangbao, ZHOU Longbao, et al. Study on performances and emission characteristics of direct injection diesel engine fueled with blend of dimethyl ether/diesel fuel [J]. Journal of Xi'an Jiaotong University, 2006, 40(3): 294-297.

CIPOLAT D. Analysis of energy release and NOx emissions of a CI engine fuelled on diesel and DME [J]. Applied Thermal Engineering, 2007, 27(11/12): 2095-2103.

THOMAS G, FENG B, VEERARAGAVAN A, et al. Emissions from DME combustion in diesel engines and their implications on meeting future emission norms: a review [J]. Fuel Processing Technology, 2014, 119: 286-304.

ARCOUMANIS C, BAE C, CROOKES R, et al. The potential of di-methyl ether(DME)as an alternative fuel for compression-ignition engines: a review [J]. Fuel, 2008, 87(7): 1014-1030.

FARRELL A E, PLEVIN R J, TURNER B T, et al. Ethanol can contribute to energy and environmental goals [J]. Science, 2006, 311(5760): 506-508.

GOLDEMBERG J. Ethanol for a sustainable energy future [J]. Science, 2007, 315(5813): 808-810.

HU C, SHUAI S J, WANG J X. Study on combustion characteristics and PM emission of diesel engines using ester-ethanol-diesel blended fuels [J]. Proceedings of the Combustion Institute, 2007, 31(2): 2981-2989.

SAKAI S, ROTHAMER D. Effect of ethanol blending on particulate formation from premixed combustion in spark-ignition engines [J]. Fuel, 2017, 196: 154-168.

刘圣华, 魏衍举, 吕胜春, 等. 乙醇汽油发动机排放特性研究 [J]. 西安交通大学学报, 2006, 40(7): 745-747.

LIU Shenghua, WEI Yanju, LÜ Shengchun, et al. Study on emission characteristics of gasohol engine [J]. Journal of Xi'an Jiaotong University, 2006, 40(7): 745-747.

BO Z, FU W, GONG J. Study of fuel consumption when introducing DME or ethanol into diesel engine [J]. Fuel, 2006, 85(5/6): 778-782.

PYUN S H, REN W, LAM K Y, et al. Shock tube measurements of methane, ethylene and carbon monoxide time-histories in DME pyrolysis [J]. Combustion and Flame, 2013, 160(4): 747-754.

TRANTER R S, LYNCH P T, YANG X. Dissociation of dimethyl ether at high temperatures [J]. Proceedings of the Combustion Institute, 2013, 34(1): 591-598.

HASHEMI H, CHRISTENSEN J M, GLARBORG P. High-pressure pyrolysis and oxidation of DME and DME/CH4 [J]. Combustion and Flame, 2019, 205: 80-92.

HIDAKA Y, SATO K, YAMANE M. High-temperature pyrolysis of dimethyl ether in shock waves [J]. Combustion and Flame, 2000, 123(1): 1-22.

FISCHER S L, DRYER F L, CURRAN H J. The reaction kinetics of dimethyl ether: I High-temperature pyrolysis and oxidation in flow reactors [J]. International Journal of Chemical Kinetics, 2000, 32(12): 713-740.

AGHSAEE M, NATIVEL D, BOZKURT M, et al. Experimental study of the kinetics of ethanol pyrolysis and oxidation behind reflected shock waves and in laminar flames [J]. Proceedings of the Combustion Institute, 2015, 35(1): 393-400.

METHLING T, KATHROTIA T, BRAUN-UNKHOFF M, et al. The pyrolysis of ethanol: Kinetic modeling of shock tube experiments [C]∥7th European Combustion Meeting. Budapest, Hungary: Institute of Combustion Technology, 2015: 1-51.

HASHEMI H, CHRISTENSEN J M, GLARBORG P. High-pressure pyrolysis and oxidation of ethanol [J]. Fuel, 2018, 218: 247-257.

ZHAO Q, RAN J, QIN C, et al. An experimental study on the gas and soot formation in ethanol pyrolysis [J]. International Journal of Oil Gas and Coal Technology, 2019, 20(2): 189.

KIECHERER J, CORNELIE B, BENTZ T, et al. Pyrolysis of ethanol: a shock-tube/TOF-MS and modeling study [J]. Proceedings of the Combustion Institute, 2015, 35(1): 465-472.

DU W, MA Z, YIN Z, et al. Auto-ignition and deflagration characteristics of ethanol-gasoline/air at high temperature [J]. Fuel, 2019, 255: 115768.

廖钦, 徐胜利. 雾化激波管研制和煤油点火延时测量 [J]. 实验流体力学, 2009, 23(3): 70-74.

LIAO Qin, XU Shengli. The ignition delay measurement of atomized kerosene air mixture in an aerosol shock tube [J]. Experimental Fluid Mechanics, 2009, 23(3): 70-74.

DAVIDSON D F, HAYLETT D R, HANSON R K. Development of an aerosol shock tube for kinetic studies of low-vapor-pressure fuels [J]. Combustion and Flame, 2008, 155(1/2): 108-117.

ZHANG Y, EL-MERHUBI H, LEFORT B, et al. Probing the low-temperature chemistry of ethanol via the addition of dimethyl ether [J]. Combustion and Flame, 2018, 190: 74-86.

MITTAL G, BURKE S M, DAVIES V A, et al. Autoignition of ethanol in a rapid compression machine [J]. Combustion and Flame, 2014, 161(5): 1164-1171.

KAISER E W, WALLINGTON T J, HURLEY M D, et al. Experimental and modeling study of premixed atmospheric-pressure dimethyl ether air flames [J]. Journal of Physical Chemistry: A, 2000, 104(35): 8194-8206.

BURKE U, SOMERS K P, O'TOOLE P, et al. An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures [J]. Combustion and Flame, 2015, 162(2): 315-330.

MARINOV N M. A detailed chemical kinetic model for high temperature ethanol oxidation [J]. International Journal of Chemical Kinetics, 2015, 31(3): 183-220.

SIVARAMAKRISHNAN R, MICHAEL J V, WAGNER A F, et al. Roaming radicals in the thermal decomposition of dimethyl ether: experiment and theory [J]. Combustion and Flame, 2011, 158(4): 618-632.

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