纤维素废弃物稀酸水解残渣制氢研究

AN EXPERIMENTAL RESEARCH ON HYDROLYTIC RESIDUES OF LIGNOCELLULOSES WASTE CONVERSION INTO HYDROGEN

对纤维素废弃物水解残渣催化气化制氢进行了研究,考察了气化温度、催化温度、催化剂颗粒粒径和S/B (单位时间内进入气化器中水蒸汽质量与生物质质量之比)4个主要参数对气体组成和氢气产率的影响并和以木屑为原料催化气化制氢进行了比较。在试验范围内提高气化温度、催化温度和S/B的值以及减小催化剂颗粒粒径对提高氢产率有利,其中气化温度和S/B对提高氢产率影响较大。气化温度在800～850℃内较为理想,催化剂颗粒的适宜粒径为2～3mm,S/B取1.5～2.0较佳;和木屑制氢相比,使用水解残渣制取的气体中CO和CO_2的体积百分比小,H_2/CO的值大,氢气含量高,有利于后续处理,且氢产率大,对制氢有利。

The characteristics of hydrolytic residues of lignocelluloses waste conversion into hydrogen through a series of experiments were studied, observed and studied the effects of gasification temperature, catalytic temperature, particle size of catalyst, S/B on gas composition, hydrogen yield were observed. Comparing hydrolytic residues of lignocelluloses waste conversion into hydrogen with sawdust conversion into hydrogen , the CO and CO2 volume ratios reduces, the H2/CO ratio and the H2 content increase greatly, the high-yield of hydrogen. Under the experimental conditions examined, the results showed that higher gasification temperature, catalytic temperature, S/B and small particle size of catalyst contributes to higher hydrogen yield, gasification temperature and S/B have more contribution to higher hydrogen yield. There are a fitting parameter of gasification temperature, particle size of catalyst and S/B.