基于感应加热的生物质气化制氢试验

Experiment of Biomass Gasification for Hydrogen Production Based on Induction Heating

利用感应加热原理,设计并建立了基于感应加热的流化床生物质气化制氢试验装置,从反应器内部为生物质气化过程提供热量,实现了准确控温下的生物质气化制氢。以稻壳为生物质原料,水蒸气和空气为气化剂,进行了生物质气化制氢试验研究,考察了反应温度、蒸汽与生物质的质量比(S/B)、当量比(ER)对产物气成分和产氢率的影响。试验结果表明:气化温度在800℃时,H2体积分数随着S/B增大或ER减小而升高,H2产率在S/B为1.5或ER为0.22存在最大值。在温度为950℃、S/B为1.5、ER为0.22时,H2体积分数和产率同时达到最大值35.47%和78.22 g/kg。

Based on electromagnetic induction heating technology, a fluidized bed gasification reactor based on induction heating was manufactured. It could provide heat for the biomass gasification process from the inside, and control the gasification reaction temperature accurately. Taking rice husk as raw materials of biomass, steam and air gasification as gas agent, biomass gasification for hydrogen production experiment was carried out. The effects of reactor temperature, steam-to-biomass ratio （S/B） , and equivalence ratio （ER） on gas composition and hydrogen yield were investigated. According to the experimental results, it was found that when the reactor temperature was 800℃, the hydrogen content increased with the inerease of SfB or the decrease of ER, hydrogen yield reached its maximum at the S/B of 1.5 or at the ER of 0.22. The highest hydrogen content （35.47%） and the highest hydrogen yield （78.22 g/kg） , was achieved simultaneously at a reactor temperature of 950℃ , ER of 0.22, and S/B of 1.5.