中文摘要：

煤热解是一种重要的煤炭分质利用技术，中低温热解焦油是制取液体燃料和化学品的重要原料。本文从对煤进行预处理、改变热解气氛、催化热解与催化加氢热解、煤与其它物质共热解、新型耦合热解工艺等方面综述了煤热解制焦油的工艺研究进展，探讨了影响煤热解过程焦油产率的因素及机理，并对各工艺进行了评价。

英文摘要：

Coal pyrolysis was an important technique for coal conversion.Coal tar , one of the products , was an important raw material for liquid fuels and chemicals.The technologies including pretreatment of coal , change of atmosphere , catalytic pyrolysis and catalytic hydropyrolysis , co -pyrolysis with other material and novel integrated pyrolysis technology were stated that can improve tar yield during coal pyrolysis process , the factors that effected tar yield and the mechanisms were discussed , as well as the advantages and disadvantages of each processes.