榆林煤干馏技术的研究  

Dry distillation of Yulin 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》2013年第4期41-44,共4页Clean Coal Technology

摘　　要：通过对原煤性质的分析,说明榆林煤是一种低水分、低灰分、高挥发分、低硫分、中高发热量的优质煤,较适于低温干馏。对榆林原煤进行破碎处理,分析了加热温度、加热方式、分段方式和原煤粒度等对榆林煤干馏工艺的影响,并最终确定了适于榆林煤干馏的最佳工艺条件。试验表明:榆林原煤强度较好,有利于提高煤炭利用率;干馏温度为600℃时,焦油产率最高,达到9.0%以上;内热式加热方式具有加热效率高、加热均匀等优点,其焦油产率比外热式约高0.7%;在保证干馏产品产率及品质的条件下,三段炉的分段工艺较适宜榆林煤干馏;干馏原煤最佳粒度为5～50 mm。最后分析了煤焦油和半焦性质,说明榆林煤干馏技术更应将煤焦油作为主要产品。The analysis of Yutin raw coal quality show that it＇s high-quality coal with low moisture, ash and sulphur, high volatile, medium-high calorific value, which is suitable for low-temperature carbonization. First crush the Yulin raw coal, then analyse the influence of heating temperature and method, segmentation methods, raw coal particle size on dry distillation. Determine the suitable condition of carbonization process for Yulin coal. The results show that Yu｜in coal has higher strength, which help to improve utilization rate. When the carbonization temperature reaches 600 ℃, the tar yield reaches up to above 9.0 percent. The tar yield gotten by inner-heating technology is 0.7 percent higher than outer-heating method. The inner-heating technology has high heating efficiency, uniform heating and the like. To ensure the yield and quality of product, contrast one, two, three sections of the furnace, find that the three-stage furnace staging process is more suitable for Yulin coal carbonization. The optimum coal particle size for dry distillation ranges from 5 mm to 50 mm. Analyse the characteristics of coal tar and semi-coke, find that coal tar should be the main product in the carbonization process.

关 键 词：煤干馏 榆林煤 煤焦油 半焦 低温干馏 内热式 

分 类 号：TD849[矿业工程—煤矿开采] TQ523[矿业工程—矿山开采]