摘要
采用GJ-2型共振搅拌反应釜,首先研究了一定条件下煤液化转化率随时间的变化关系.结果表明,煤液化反应过程中存在着初始高活性反应阶段,而且煤在该阶段完成了绝大部分液化反应;接着研究了氢气在煤液化初始高活性阶段的作用机理.结果如下:1)在无催化液化条件下,氢气在煤液化初始高活性阶段几乎不参与煤液化反应;2)煤液化初始高活性阶段氢气能够快速溶解于煤液化溶剂中,因此氢气的溶解过程不是其未有效参与煤液化反应的主要原因;3)在煤液化初始高活性阶段添加高分散性铁系催化剂和助剂硫,氢气在催化剂作用下参与了煤液化反应,进而使液化总转化率提高7%以上.
In this paper,the reaction between total conversion and time was investigated by liquefaction of Yanzhou coal using a 17 mL tubular resonance agitation microautoclave reactor under certain condition.It was found that coal liquefaction existed an initial stage of high reactivity.During this stage,most of the liquefaction reaction was completed.Then the reaction mechanism of hydrogen for the initial high reactivity stage was studied by coal liquefaction.The results show that: 1) without catalyst,in the initial high reactivity stage of coal liquefaction,hydrogen could not participate coal liquefaction reaction;2) in the initial high reactivity stage of coal liquefaction,hydrogen soluted in coal liquefaction solvent rapidly.Thus the main reason that hydrogen did not participate the liquefaction reaction effectively is not the solution process;3) adding high dispersion iron catalyst with sulfur promoter in the initial high reactivity stage of coal liquefaction,hydrogen,activated by the catalyst impregnation,was able to participate coal liquefaction reaction.By which the total conversion increased more than 7 percent.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第3期36-40,共5页
Coal Conversion
基金
国家自然科学基金资助项目(20776094)
山西省自然科学基金资助项目(2009011010-2)
关键词
氢气
初始高活性
液化
反应机理
氢气溶解规律
兖州煤
hydrogen
initial high reactivity stage
liquefactionhydrogen solution
Yanzhou coal