摘要
利用固定床反应器,考察了浸渍法添加硝酸铁、氯化铁和硫酸亚铁铵等铁基催化剂对煤加氢热解特性的影响,对提高焦油产率较显著的硫酸亚铁铵的作用过程进行了探讨,并对其焦油进行了分析评价.结果表明,添加这三种催化剂时煤加氢热解的转化率都有提高,其中在添加5%(质量分数,以铁计)的硫酸亚铁铵时焦油的产率提高最为显著,由不加催化剂时的14.3%(质量分数,daf)提高到17.9%;铁的价态不同对煤加氢热解的催化作用不同,铵根的存在有利于煤热解转化率和焦油产率的提高;采用硫酸亚铁铵为催化剂时煤热解得到的焦油品质优于无催化剂时得到的焦油品质.
The effect of iron-based catalysts such as Fe（NO3）3,FeCl3 and （NH4）2Fe（SO4）2prepared by impregnation method on the hydropyrolysis behavior were investigated using a fixedbed reactor in this paper.The role of catalyst,（NH4）2Fe（SO4）2,having the highest yield of tar was investigated,and its tar was evaluated.The results showed that coal hydropyrolysis conversion was improved after adding these three catalysts; adding （NH4）2Fe（SO4）2 of 5％,the tar yield increased from 14.3％ （daf） without catalysts to 17.9％ （daf）.Adding different valence iron catalyst,the role of iron catalyst is different.The existence of ammonium root is conducive to the improvement of coal pyrolysis conversion and tar yield.The tar prepared from （NH4）2Fe（SO4）2 has a good quality compared with that prepared without catalyst,its quality greatly improved.
出处
《煤炭转化》
CAS
CSCD
北大核心
2014年第2期21-24,共4页
Coal Conversion
基金
新疆维吾尔自治区自然科学基金资助项目(2011211A020)
关键词
加氢热解
铁基催化剂
浸渍法
hydropyrolysis
iron-based catalysts
impregnation method
