循环利用热流ⅱ.ppt

天然气现场制氢新工艺的研究 学生 汪丛伟 导师 王树东 研究员 * 内容纲要 天然气现场制氢的意义及优势 天然气现场制氢的新工艺 总结与展望 研究背景 天然气现场制氢的技术路线 天然气水蒸汽重整 CH4+H2O=CO+3H2， △H298K= 206kJ/mol CH4+2H2O=CO2+3H2， △H298K= 165kJ/mol CH4+2O2=CO2+2H2O，△H298K= -804 kJ/mol 天然气自热重整 CH4+0.5O2=CO+2H2， △H298K=-36 kJ/mol CH4+H2O=CO+3H2， △H298K=206kJ/mol CH4+2H2O=CO2+3H2， △H298K=165kJ/mol 天然气现场制氢新工艺 集成换热式(反应耦合） 循环利用热流：壁式反应器，两段式反应器，多层套筒式反应器 降低传热传质阻力：板式反应器，微通道反应器 净化纯化式 制备高纯度H2 ：膜反应器 降低CO排放：双层催化剂无CO反应器 多层套筒式重整反应器 微通道反应器 集成化膜反应器 总结与展望 将重整制氢,供热,纯化一体化,实现过程强化、系统高度集成是降低制氢成本的出路 集成换热式(热量耦合） 净化纯化式（降低成本） 现场制氢新工艺要真正走向实际应用，还需切实解决自身的关键技术，扬长避短 谢谢大家! 参考文献 1.ON-BOARD FUEL PROCESSING GO/NO-GO DECISION, DOE DECISION TEAM COMMITTEE REPORT , August 2004 2.Theophilos I, Xenophon E. Verykios, Development of a novel heat-integrated wall reactor for the partial oxidation of methane to synthesis gas, Catalysis Today 46 (1998) 71-81 3.M. Zanir, A. Gavriilidis, Catalytic combustion assisted methane steam reforming in a catalytic plate reactor, Chemical Engineering Science 58 (2003) 3947 – 3960 4.Vogel, B., G. Schaumberg, A. Schuler, and A. Henizel, 1998, .Hydrogen Generation Technologies for PEM Fuel Cells,. 1998 Fuel Cell Seminar Abstracts, November 16-19, 1998, Palm Springs, CA, pp. 364-367. 5. A.Y. Tonkovicha, S. Perrya,W.A. Rogersa, Microchannel process technology for compact methane steam reforming, Chemical Engineering Science 59 (2004) 4819 – 4824 6. Vladimir G, Kai S, Hydrogen production from methane by steam reforming in a periodically operated two-layer catalytic reactor, Applied Catalysis A: General 289 (2005) 121–127 7.A novel steam reforming reactor for fuel cell distributed power generation, California Energy Commission, May 2000 参考文献(续) 8. Yu M L, Min H R, Process development for generating high purity hydrogen by using supported palladium membrane reactor as steam Reformer, International Journal of Hydrogen Energy 25 (2000) 211-219 9. S Lin, Y Chen, C Lee, Dynamic modeling and control structure design of an experimental fu