中低温煤焦油加氢工艺技术概述

针对煤炭在干馏、气化或热解过程中的副产物——煤焦油的高效清洁利用问题,分析了煤焦油的来源以及煤焦油加氢的目的、作用和原理;以煤热解过程产生的中低温煤焦油的加氢改质处理工艺为例,论述了加氢精制工艺、加氢精制-加氢裂化工艺、液相裂解加氢工艺、非均相悬浮床加氢工艺的优缺点及其在国内加氢改质装置的生产应用效果;结果表明,煤焦油...

Summarization of Hydrogenation Process Technology of Medium and Low Temperature Coal Tar Oil

In allusion to the problems of high-effectiveness,cleanness and utilization for by-productscoal tar oil formed in processes of dry distillation,gasification or hot decomposition of coal,author has analyzed the source of the coal tar oil and purpose,function and principle for hydrogenation of coal tar oil;taking the hydrogenation up-gradation treatment process for medium and low temperature coal tar oil formed in hot decomposition process of coal as an example,has discussed the advantages and shortages for hydrogenation rectification process,hydrogenation rectification-hydrogenation cracking process,liquid phase cracking hydrogenation process,non-homogenous phase suspending bed hydrogenation process and their application effect in the hydrogenation up-degradation plant in China,result indicates that there is already industrialization production experience in many chemical enterprises for the hydrogenation rectification-hydrogenation cracking process of coal tar oil,it has applicable technology basis for large-scale industrialization.