新型多段式低阶煤热解工艺的研究  

A new type of pyrolysis process for low rank coal

作　　者：张卫东 

机构地区：[1]湖南华银能源技术有限公司,湖南长沙410007

出　　处：《洁净煤技术》2015年第6期56-58,共3页Clean Coal Technology

摘　　要：针对目前低阶煤热解技术中块煤热解效率低、末煤无法充分利用等问题,分析了国内外低阶煤热解技术路线、特点及局限性,重点论述了外热式和内热式2种低阶煤热解技术的作用原理,提出了一种新型低阶煤热解路线。目前常用的固体热载体技术和气载体技术具有工艺成熟,技术路线简单等优点,适合对低阶煤进行简单处理,但也存在一定局限性,如气载体技术难以充分利用末煤,固体热载体技术耗能较高等。新型低阶煤热解技术可同时对块煤和末煤进行处理,并且可充分提取煤炭中的煤焦油及高热值气体组分,实现能源分级利用。The pyrolysis process for low rank coal had the disadvantages of low lump coal pyrolysis efficiency,incomplete use of slack coal,the principle of internal heat type and external heat type were investigated. A new type of low rank coal pyrolysis route was proposed. Themature solid-carrier technology and air-carrier technology were more commonly used which was suitable for low rank coal treatment,whilethe former had higher energy consumption and the latter couldn＇t make full use of slack coal. The new low rank coal pyrolysis technologycould treat lump coal and slack coal at the same time,and it also could fully extract coal tar and high calorific value gas components,a-chieve energy classification and utilization.

关 键 词：低阶煤 热解 煤焦油 干馏 

分 类 号：TQ52[化学工程—煤化学工程]