制氢体系中催化燃烧换热器

催化燃烧换热器具有高效、经济和环境友好等特点。本文详细阐述了催化燃烧换热器在制氢体系中的重要意义,以及国内外对于催化燃烧换热器的研究现状。通过对制氢系统中不同结构的燃烧换热器的比较,指出了它们各自的优缺点。结合本实验室在75kW甲醇水蒸气重整制氢和5kW甲烷重整制氢体系开发过程中催化燃烧换热器的设计所涉及到的一些相关问题,指出现阶段对于催化燃烧换热器的研究还存在很大的欠缺。同时,指出开展催化燃烧换热器相关领域的研究在进一步优化制氢体系过程中的必要性。最后提出了研究的着眼点和解决问题的措施。

CATALYTIC COMBUSTION HEAT EXCHANGER FOR HYDROGEN PRODUCTION

Catalytic combustion heat exchanger (CCHE) is benign to the environment, and it performs efficiently and economically. As the core of fossil fuel processor for fuel cell, some different type CCHEs were discussed in respect of their heat transfer efficiency and scale-up. The accurate models, which predicted heat transfer coefficients of industrial heat exchangers without phase change and inner heat source, are available in the literature. However this paper indicates it is necessary to develop theoretical models for CCHE with phase change under low-Re conditions.