中低温煤焦油脱水剂的复配研究

Compounding reagent for medium-low temperature coal tar dewatering

为解决煤焦油在深加工时水分导致管道和法兰爆裂的问题,考察了脱水剂复配比例、脱水剂投加量、脱水温度、搅拌时间对脱水效果的影响,复配出可将中低温煤焦油含水率降至3%以下的脱水剂。研究发现:较优的试验条件是脱水剂I和J的复配比例为2∶3,脱水剂添加量为5×10^(-4),脱水温度为60℃,搅拌时间为1 h。将脱水后的煤焦油送检测机构检测,结果显示复配出的脱水剂不但对煤焦油品质没有影响,而且有很好的脱水能力和脱盐能力。

In order to solve the issue of pipe and flange burst caused by water during the deep processing of coal tar, the effects of dehydra- tion reagent ratio, dosage, dehydration temperature and stirring time on dehydration efficiency were investigated. The dehydrating rea- gent could reduce the water content of coal tar to below 3%. The optimum conditions are I and J mixture ratio of 2 ： 3 ,the amount of de- hydrating agent is 5×10^-4 ,the dehydration temperature is 60 ℃ and the stirring time is 1 h. The test results show that the dehydrating rea- gent has little effect on the quality of coal tar, moreover, it has good dewatering and desalting capacity.