【摘要】 以生物质模型化合物葡萄糖为原料,在温度500～600℃,压力23～37MPa范围内,利用新研制的超临界水流化床系统对其气化制氢特性进行研究,讨论了过程主要参数温度、压力、物料浓度以及催化剂添加对气化制氢的影响。实验结果表明:温度对气化影响最大,而压力对气化的影响较小,升高温度和压力都有利于产氢。随着物料浓度增加葡萄糖气化效果下降,在超临界水流化床气化制氢系统中实现30%葡萄糖的连续稳定气化。K₂CO₃提高气化率同时降低了产气中CO含量,ZnCl₂的加入虽对气化率影响不大,但大大提高了氢气的选择性。该文的实验研究验证了超临界水流化床气化制氢系统的有效性。更多还原

【Abstract】 Glucose used as a biomass model compound was gasified for hydrogen production in the new supercritical water fluidization bed system with temperature of 500-600℃and pressure of 23-27MPa.The influences of main parameters,including temperature,pressure,feedstock concentration and catalyst addition,on the gasification process were discussed. The experiment results show that temperature is the key factor and pressure has a minor effect on glucose gasification. Higher temperature and pressure is in favor of glucose gasification.Gasification performance of glucose decreases with the increasing concentration,and 30wt%glucose was gasified stably during long-term operations.Gasification efficiency increases and molar fraction of CO decreases with the addition of K₂ CO₃.ZnCl₂ addition has no significant effect on the gasification efficiency,but it improves the selectivity of hydrogen in gas product.Experimental research also shows that the supercritical water fluidization bed system is effective for hydrogen production by biomass gasification.更多还原