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以木块为原料,利用下吸式固定床气化器进行富氧气化的中试实验。研究不同气化剂、富氧浓度以及气化温度对气化结果的影响。分析富氧气化使气体热值升高的原因以及影响气化产出气中CO2含量的因素。结果表明,随富氧浓度的增加,热值呈上升趋势,较空气气化热值增长1倍,产出气中CO、H2明显增加,但富氧浓度超过90%后对气体热值的贡献不大;产出气中CO2含量受富氧浓度、当量比以及当量比对气化温度及其气体热值的影响;同时针对物料特性和气化器本身材料的限制得出了该炉型的适宜气化温度为1100℃。
Wood as raw material, the use of fixed-bed gasifier under the suction oxygen-enriched gas pilot experiment. The effects of different gasifiers, oxygen-enriched concentration and gasification temperature on gasification results were studied. Analysis of the reasons for the increase of gas calorific value due to oxygen-enriched gasification and the factors affecting the CO2 content in gasification gas. The results showed that with the increase of oxygen concentration, the calorific value showed an upward trend, doubling the calorific value of air vaporization, and significantly increased the CO and H2 contents in the produced gas, but the contribution to the calorific value of the gas after the oxygen enrichment exceeded 90% The CO2 content in the output gas is influenced by the oxygen concentration, the equivalence ratio and the equivalence ratio to the gasification temperature and the gas calorific value. Meanwhile, according to the material characteristics and the limitation of the gasifier itself material, The gasification temperature is 1100 ° C.