低阶煤热解项目煤气热量及焦油的回收工艺  

Coal gas heat and tar recovery process in low rank coal pyrolysis project

作　　者：单丹 Shan Dan(TZ(Tianjin)Binhai Heavy Machinery Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]太重(天津)滨海重型机械有限公司,天津300450

出　　处：《煤化工》2022年第4期53-57,共5页Coal Chemical Industry

摘　　要：热解煤气的热量回收及焦油回收技术是低阶煤热解工艺的关键环节。针对某低阶煤热解项目中煤气的热量回收和焦油的冷凝回收技术难点,以焦油性质与析出特征为基础,利用Aspen Plus模拟软件,构建了煤气热量与焦油回收工艺模拟流程,形成基于温度梯度的热解煤气热量分级回收。同时对废锅B、间冷器A和间冷器B的不同馏程焦油产物进行分质回收,从而达到热效率与产品品质提升的双重效果。The heat and tar recovery of pyrolysis gas was the key process of low rank coal pyrolysis.Aiming at the technical difficulties of gas heat recovery and tar condensation recovery in a low rank coal pyrolysis project,based on the properties and precipitation characteristics of tar,the coal gas heat and tar recovery process simulation flow was built by using Aspen Plus software,forming a temperature gradient-based classified heat recovery process of pyrolysis gas.At the same time,the tar products of different distillation ranges from waste heat boiler B,inter cooler A and inter cooler B were recovered at different qualities,so as to achieve the dual effects of heat efficiency and product quality improvement.

关 键 词：低阶煤热解 Aspen Plus 煤气热量回收 焦油回收 

分 类 号：TQ53[化学工程—煤化学工程]