主动冷却通道内甲醇催化分解吸热过程

推进技术 ›› 2015, Vol. 36 ›› Issue (6): 927-932.

主动冷却通道内甲醇催化分解吸热过程

张　琴,刘国柱,李国柱,张香文

天津大学化工学院绿色合成与转化教育部重点实验室，天津 300072,天津大学化工学院绿色合成与转化教育部重点实验室，天津 300072,天津大学化工学院绿色合成与转化教育部重点实验室，天津 300072,天津大学化工学院绿色合成与转化教育部重点实验室，天津 300072

发布日期:2021-08-15
作者简介:张　琴(1989—)，女，硕士生，研究领域为吸热燃料。E-mail:zhangqin071031@126.com 通讯作者:刘国柱(1979—)，男，博士，研究员，研究领域为航空航天先进碳氢燃料。
基金资助:
国家自然科学基金重大研究计划(91116001)。

Endothermic Process of Methanol Catalysis Decomposition

Key Laboratory for Green Chemical Technology of the Ministry of Education，School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China,Key Laboratory for Green Chemical Technology of the Ministry of Education，School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China,Key Laboratory for Green Chemical Technology of the Ministry of Education，School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China and Key Laboratory for Green Chemical Technology of the Ministry of Education，School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China

Published:2021-08-15

摘要/Abstract

摘要： 甲醇分解生成H2和CO是吸热反应，为了研究甲醇作为吸热燃料应用于主动冷却技术的可行性，使用电加热管技术，在4MPa压力下研究了热分解，Pd/Al2O3，Pt/Al2O3，Ag/Al2O3涂层催化剂对甲醇分解的影响。结果表明在600℃时5%Pd/Al2O3催化甲醇分解，分解率达到68.87%，热沉为4236 kJ/kg，比热裂解高出18.39%。此外，也比较了不同金属含量负载催化剂对甲醇分解的影响，发现较高的金属含量有利于提高催化剂的活性和选择性。

关键词: 甲醇；催化分解；热沉；结焦

Abstract: Methanol decomposition to hydrogen and carbon moNO_xide is an endothermic reaction. The feasibility of methanol as an endothermic fuel used in active cooling technology was carried out. Herein the catalytic decomposition of methanol was studied in an electrically heated tube reactor at 4 MPa with wall-coated Pd/Al2O3，Pt/Al2O3 and Ag/Al2O3 catalysts. Results show that 5%Pd/Al2O3 catalyst has positive effect on methanol decomposition in which the decomposition ratio reaches 68.87% and the heat sink is 4236kJ/kg，with 18.39% higher than that of thermal cracking at 600 oC. In addition，the effects of different amount of metal catalysts for methanol cracking was also studied. It is found that the catalyst with higher loading amount of metal has higher activity and selectivity.

Key words: Methanol；Catalytic decomposition；Heat sink；Coke

张　琴,刘国柱,李国柱,张香文. 主动冷却通道内甲醇催化分解吸热过程[J]. 推进技术, 2015, 36(6): 927-932.

ZHANG Qin,LIU Guo-zhu,LI Guo-zhu,ZHANG Xiang-wen. Endothermic Process of Methanol Catalysis Decomposition[J]. Journal of Propulsion Technology, 2015, 36(6): 927-932.

参考文献

[1] Huang H, Spadaccini L J, Sobel D R. Fuel-Cooled Thermal Management for Advanced Aeroengines[J]. Journal of Engineering for Gas Turbines and Power-Transaction of the ASME, 2004, 126(2):284-293.
[2] Fabuss B, Smith J, Lait R, et al. Kinetics of Thermal Cracking of Paraffinic and Naphthenic Fuels at Elevated Pressures[J]. Industrial & Engineering Chemistry Process Design and Development, 1964, 3(1):33-37.
[3] Edwards T. Cracking and Deposition Behavior of SuperCritical Hydrocarbon Aviation Fuels[J]. Combustion Science and Technology, 2006, 178(1-3):307-334.
[4] Sobel D R, Spadaccini L J. Hydrocarbon Fuel Cooling Technologies for Advanced Propulsion[J]. Journal of Engineering for Gas Turbines and Power, 1997, 119(2):344-351.
[5] Pettersson L, [Sjostrom]K. Decomposed Methanol as a Fuel—A Review[J]. Combustion Science and Technology, 1991, 80(4-6):265-303.
[6] Liu Y, Hayakawa T, Ishii T, et al. Methanol Decomposition to Synthesis Gas at Low Temperature over Palladium Supported on Ceria-Zirconia Solid Solutions[J]. Applied Catalysis A: General, 2001, 210(1-2):301-314.
[7] Cheng W, Shiau C, Liu TH, et al. Promotion of Cu/Cr/Mn Catalyst by Alkali Additives in Methanol Decomposition[J]. Applied Catalysis A: General, 1998, 170(2):215-224.
[8] Cheng W-H. Development of Methanol Decomposition Catalysts for Production of H2 and CO[J]. Accounts of Chemical Research, 1999, 32(8):685-691.
[9] Imamura S, Hagashihara T, Saito Y, et al. Decomposition of Methanol on Pt-loaded Ceria[J]. Catalysis Today, 1999, 50(2):369-380.
[10] Brown JC, Gulari E. Hydrogen Production from Methanol Decomposition over Pt/Al2O3 and Ceria Promoted Pt/Al2O3 Catalysts[J]. Catalysis Communications, 2004, 5(8):431-436.
[11] Jiang R, Liu G, Zhang X. Thermal Cracking of Hydrocarbon Aviation Fuels in Regenerative Cooling Microchannels[J]. Energy&Fuels, 2013, 27(5):2563-2577.
[12] Jiang R, Liu G, He X, et al. Supercritical Thermal Decompositions of Normal- and Iso-Dodecane in Tubular Reactor[J]. J.Anal.Appl.Pyrolysis, 2011, 92(2):292-306.
[13] Liu G, Wang X, Zhang X. Pyrolytic Depositions of Hydrocarbon Aviation Fuels in Regenerative Cooling Channels[J]. J.Anal.Appl.Pyrolysis, 2013, 104:384-395
[14] Liu G, Zhao G, Meng F,et al. Catalytic Cracking of Supercritical n-Dodecane over Wall-Coated HZSM-5 Zeolites with Micro-and Nanocrystal Sizes[J]. Energy & Fuels, 2012, 26(2):1220-1229.
[15] 黄国靖, 艾长胜. 甲醇裂解气的碳势及其影响因素[J]. 金属热处理, 1990, 9:35-39.
[16] 张强强, 汪旭清, 刘国柱, 等. 主动冷却通道内吸热型碳氢燃料热裂解结焦抑制机理[J]. 推进技术, 2013, 34(12):1713-1718.(ZHANG Qiang-qiang, WANG Xu-qing, LIU Guo-zhu, et al. Inhibition Mechanism of Pyrolytic Cokes from Endothermic Hydrocarbon Fuels in Regenerative Cooling Channels[J]. Journal of Propulsion Technology, 2013, 34(12):1713-1718. )(编辑:梅瑛)　　　　　　　　　　　　　*　收稿日期:2014-03-30；修订日期:2014-06-18。基金项目:国家自然科学基金重大研究计划(91116001)。作者简介:张琴(1989—),女,硕士生,研究领域为吸热燃料。E-mail:zhangqin071031@126.com 通讯作者:刘国柱(1979—),男,博士,研究员,研究领域为航空航天先进碳氢燃料。E-mail:gliu@tju.edu.cn