源头提质的可燃固体废物流化床气化实验

来源期刊:中南大学学报(自然科学版)2018年第8期

论文作者:池涌 李延吉 于梦竹 李润东

文章页码:2091 - 2099

关键词:源头分类提质;可燃固体废物;流化床;气化

Key words:source classification; combustible solid waste; fluidized bed; gasification

摘    要:采用流化床对源头提质的可燃固体废物进行气化实验研究,研究反应温度和空气当量比(ER)对燃气组分变化和气化反应特性的影响。研究结果表明:随着气化温度升高,H2和CO体积分数也随之升高,而CO2和CH4体积分数随着气化温度升高而降低;随着空气当量比增大,CO2体积分数也随之增加,而H2和CH4体积分数随着空气当量比增大而减少;气化气可燃成分中的CO体积分数最高,H2和CH4体积分数次之;气化气低位热值随着气化温度升高和空气当量比增大而降低,而气化效率随着气化温度升高和空气当量比增大而降低;气化气产率随着温度升高而增大,随着空气当量比增大而增大。典型组分气化的最优工况如下:空气当量比为0.4,温度为700 ℃。

Abstract: The effects of temperature and air equivalence ratio (ER) on gasification characteristics of combustible solid waste were studied based on the source-classified garbage in a fluidized bed gasifier. The main studied factors were the composition variation of syngas and the characteristics of gasification. The results show that with the increase of gasification temperature, the volume fractions of H2 and CO also increase while the volume fractions of CO2 and CH4 decrease. With the increase of ER, CO2 volume fraction also increases while H2 and CH4 volume fractions reduce. The CO volume fraction of the gas products is the highest, H2 and CH4 volume fractions are second highest. Low calorific value of syngas decreases with the increase of gasification temperature and air equivalence ratio(ER), and gasification efficiency decreases when gasification temperature and air equivalence ratio(ER) increase. Gasification gas yield increases with the increase of gasification temperature and air equivalence ratio(ER). The optimal condition for gasification typical components is as follows: air equivalence ratio is 0.4 and gasification temperature is 700 ℃.

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