甲醇自热重整制氢集成式反应器的研究

Hydrogen Production by Methanol Autothermal Reforming in An Integrated Reactor

设计了一种车载集成式甲醇自热重整制氢反应器,将甲醇-水-空气自热重整制氢反应、一氧化碳变换反应、甲醇-水液体汽化、以及物料间的换热等集成于一个反应器内。自热重整区和变换区内分别装填Cr-Zn催化剂、Cu-Zn-Al变换催化剂。重整器无需外供热和附加保温措施。产物中φ(H2)可达51.1%、φ(CO)低于0.5%(干气);产氢量达到6.0 m3/h(STP);能量转化效率达到0.85。该类反应器通过甲醇的直接燃烧启动,启动时间为3m in,动态应答时间为秒级。该类型甲醇重整器可应用于车载燃料电池氢源系统。

An integrated reformer for methanol reforming to H2 on-board was designed and tested. It put the reactions of methanol-water-air autothermal reforming, CO watergas shift, methanol-water vaporization as well as heat exchange between materials together in it. The Cr-Zn catalyst and Cu-Zn-A1 catalyst were in autothermal reforming chamber and heat exchange chamber, respectively. The reformer did not need external heat and the other measurement of maintaining heat. The results showed that the H2 molar fraction in product could reach 51%, and CO molar fraction was lower than 0. 5 %. Furthermore, the H2 productivity was 6. 0 Nm^3 · h^-1, and the efficiency of energy exchange was 0.85. The reformer started up within 3 minutes by direct burning of methanol, the selectivity time was in second order. The reformer is promising for on board H2 production from methanol autothermal reforming for proton exchange membrane fuel cell.