【作者】 肖慧；

【导师】 欧元贤； 汤勇；

【作者基本信息】 华南理工大学 ， 机械制造及其自动化， 2010， 硕士

【摘要】 基于硼氢化钠水解制氢反应原理,采用高性能泡沫金属载体板,设计制造了两种针对不同功率氢燃料电池使用的制氢微反应器。通过理论计算、模拟分析和实验验证方法分析了反应器的性能。并开发了针对这两种制氢微反应器的应用系统。本文的主要研究内容如下:采用泡沫金属载体板,针对千瓦级燃料电池,设计制造了管式微反应器,采用特殊的喷管结构,使溶液与催化剂充分接触;针对十瓦级燃料电池,设计制造了板式微反应器,采用流道分布结构和气液分离结构,实现氢气和反应溶液的分离。对两种反应器内压降与流体流速的关系及多孔泡沫金属载体板的传热性能进行了理论计算。利用Fluent软件,模拟分析了不同入口速度及不同结构参数对泡沫金属中流体速度和压力分布的影响,得出泡沫金属中流体速度分布和压力分布规律。以速度分布均匀情况和压降的大小来分析反应器性能,模拟分析了不同入口速度及不同结构参数对微反应器中流体速度和压力分布的影响。所设计的两种微反应器内流体分布均匀,压降随入口速度的增大而增大。加工了板式制氢微反应器及管式制氢微反应器,搭建了反应器性能测试实验系统。实验结果表明:在板式微反应器内,产氢速率随入口速度的增加而降低,随温度的升高而增大,泡沫镍载体板的性能优于泡沫铜载铂的性能;管式微反应器内,入口速度越快产氢速率越大。开发了制氢微反应器应用系统。采用管式微反应器,开发出面向千瓦级大功率燃料电池的供氢系统,包括制氢装置及其控制系统,反应系统安全可靠、自动化程度高;采用板式微反应器,开发出面向十瓦级小功率电器的B-μPEMFC集成系统,并搭建了B-μPEMFC系统原理验证平台及系统测试平台。更多还原

【Abstract】 According to hydrolysis of sodium borohydride, two kinds of microreactor for hydrogen production for different power hydrogen fuel cells which use metal foam as catalyst support were designed and manufactured. Reactor’s performance was analyzed through theoretical calculation, simulation analysis and experimental verification. And these two kinds of microreactors were applied with fuel cell in system. The main research content of this paper is as follows:Based on metal foam catalyst support, tube microreactor for kilowatt fuel cell was designed and manufactured, using a special nozzle structure to make solution contact fully with catalyst; board microreactor for 10-watt fuel cell was designed and manufactured, using distribution structure and channel structure of gas-liquid separation to achieve the separation of hydrogen and the reaction solution. The relationship of pressure drop and flow rate in these two kinds of microreactors and the heat transfer performance of metal foam catalyst support were calculated.The fluid velocity and pressure distribution in metal foam with different inlet velocity and different structural parameters was analyzed by Fluent, obtained discipline of fluid velocity and pressure distribution in metal foam. The reactor’s performance can be analyzed by velocity distribution and pressure drop. The influence of different inlet velocity to microreactor’s flow velocity and pressure distribution was simulated. The fluid in these two kinds of microreactors distributed uniformly, pressure drop increased with the speed increased.Board microreactor and tube microreactor were machined, reactor performance test system was built. The results show that: in the board reactor, hydrogen production rate increased with the inlet velocity decreased and temperature increased, the performance of nickel foam support is better than the performance of copper foam; in the tube microreactor, hydrogen production rate increased with the inlet velocity increased.These two kinds of microreactors were applied with fuel cell in system. By using tube microreactor, a hydrogen generation system for kilowatt high-power fuel cells was designed, including hydrogen generation equipment and control system, the system is reliable and automatic; by using board microreactor, B-μPEMFC system for 10-watt low-power electric equipment was designed, theory verification platform and test platform of B-μPEMFC system were built.更多还原