以干馏煤气为介质的半焦干熄焦技术研究  

TECHNOLOGY RESEARCH OF PYROGENOUS COAL GAS USED AS SEMI-COKE QUENCHING MEDIUM

作　　者：李惠娟[1] 赵俊学[1] 李小明[1] 刘军利[1] 华建设[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安硕士生710055

出　　处：《煤炭转化》2011年第1期29-33,共5页Coal Conversion

基　　金：陕西省工业攻关项目(2010K07-04);陕西省教育厅教育基金资助项目(09JK522)

摘　　要：针对陕北半焦产品水分含量高,生产过程中水资源消耗大的问题,提出利用低温干馏煤气作为熄焦介质实现半焦干熄焦的技术方案.对应用干熄焦技术的内热式直立低温干馏炉生产半焦的过程进行了模拟物料平衡、热量平衡计算和低温干馏过程能耗分析.结果表明,干熄焦技术应用于低温干馏生产半焦过程可以节约水约203kg/t半焦,有效回收半焦显热,节能643.30MJ/t半焦,产品水分可大幅度减少;同时,由于水煤气反应减少,半焦收率提高;理论分析证明了该技术良好的应用前景.Aimed at overcoming the problem of high water content in semi-coke product and large water consumption in the production process in the north of Shaanxi Province, the tech- nological scheme of the pyrogenous coal gas used as semi-coke quenching medium to quench and extinguish the hot semi-coke was proposed in this paper. Based on the low-temperature carboniza- tion process carried out in the shaft internal heating type furnace, the material balance, heat bal- ance of semi-coke is calculated and energy consumption is analyzed. The results showed that the new process with semi-coke dry quenching technology could save almost 203 kg water and 643.30 MJ per ton of semi-coke, with the semi-coke sensible heat effectively recycle, as a result, water content in product can be obviously reduced. Meanwhile, the theoretical semi-coke yield can be improved because of the decrease of water gas reaction. The technology shows a good application foreground.

关 键 词：煤低温干馏 干熄焦 衡算 节水 降耗 

分 类 号：TQ520.6[化学工程—煤化学工程]