大颗粒煤模拟气化的煤气洗涤水中有机污染物组成

发布时间：2018-07-03 05:32

本文选题：煤炭气化 + CO　；参考：《燃烧科学与技术》2016年01期

【摘要】：分别以H2O(g)和CO2为气化剂,采用自制的煤炭地下气化模拟试验装置和GC-MS分析仪,研究粒径为5~10,mm的大颗粒内蒙褐煤、鹤壁烟煤和晋城无烟煤在不同气化温度下气化的煤气洗涤水中有机污染物组成.结果表明:随着气化温度的升高,煤气洗涤水中的各类酚不断增多,甲苯、萘和醚类化合物则不断减少,杂环化合物的变化较复杂,适当控制气化温度可以有效降低煤炭地下气化对地下水的有机污染程度;气化剂为H2O(g)时萘和各类酚含量均高于气化剂为CO2时的含量,醚和甲苯含量则小于CO2时的含量;煤种对煤气洗涤水中有机污染物种类和含量影响较大,内蒙褐煤洗涤水中酚的含量远大于鹤壁煤和晋城煤,甲苯含量的变化顺序为晋城煤鹤壁煤内蒙煤,萘含量的变化顺序与甲苯的变化顺序相反.
[Abstract]:Using H _ 2O (g) and CO _ 2 as gasification agents, a self-made underground coal gasification simulation test device and GC-MS analyzer were used to study the inner Mongolia lignite with a diameter of 5 ~ 10mm. Hebi bituminous coal and Jincheng anthracite gasified under different gasification temperature gas washing water organic pollutants composition. The results show that with the increase of gasification temperature, the phenols in the gas washing water increase, while the toluene, naphthalene and ether compounds decrease, and the heterocyclic compounds change more complex. Properly controlling the gasification temperature can effectively reduce the degree of organic pollution of underground coal gasification to groundwater, and the contents of naphthalene and phenol are higher than those of CO _ 2 when the gasifier is H _ 2O (g), and the content of ether and toluene is smaller than that of CO _ 2. The content of phenol in lignite washing water of Inner Mongolia is much higher than that of Hebi coal and Jincheng coal. The change order of toluene content is Jincheng coal Hebi coal inner Mongolia coal. The change order of naphthalene content is opposite to that of toluene.
【作者单位】：河南理工大学材料科学与工程学院;河南理工大学能源科学与工程学院;
【基金】：国家自然科学基金资助项目(51174077;51404098) 教育部博士点基金资助项目(20124116110002)
【分类号】：X784

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