高温煤焦油脱水脱盐工艺优化研究  

Dewatering and desalination process optimization technology of high temperature coal tar

作　　者：朱肖曼 张晓静 马博文 

机构地区：[1]煤炭科学技术研究院有限公司煤化工分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《洁净煤技术》2016年第3期61-64,68,共5页Clean Coal Technology

基　　金："十二五"国家科技支撑计划资助项目(2012BAA04B04);煤炭科学技术研究院有限公司技术创新基金资助项目(2014CX01)

摘　　要：针对煤焦油原料中盐含量较高造成的设备磨损和蒸馏塔腐蚀等问题,选用一种典型的高温煤焦油为原料,分别研究破乳剂、破乳剂添加量、水添加量、温度和静置时间对高温煤焦油脱水脱盐效果的影响,并优化工艺条件。结果表明,破乳剂和温度是最主要的2个影响因素,并得到优化的脱水脱盐条件:优选醇类聚醚破乳剂,破乳剂的添加量为100 mg/kg,水添加量为20%,在130℃温度下恒温4 h,经处理后的高温煤焦油盐含量小于5 mg/kg,水含量小于1.50%。In order to resolve problems of machine abrasion and distillation tower corrosion caused by high salt content during coal tar utilization,experiments for dewatering and desalination of high temperature coal tar were conducted by employing the following influencing factors,which were the types of chemical demulsifiers,the addition of chemical demulsifiers and purified water,temperature and standing time. The dewatering and desalting efficiency of each influencing factor was optimized and analyzed. The results indicated that the type of chemical demulsifiers and temperature were the most critical influencing factors. Meanwhile,polyether demulsifier was the best choice.When the dosage of demulsifier was 100 mg / kg,the water mass fraction was 20%,the salt of coal tar could be controlled under 5 mg / kg and the water was less than 1. 50% by keeping the raw coal tar at 130 ℃ for 4 h.

关 键 词：高温煤焦油 脱水脱盐 破乳剂 影响因素 

分 类 号：TQ52[化学工程—煤化学工程]