煤制天然气项目煤炭的合理利用

为了更好地利用选煤厂的粒煤、粉煤、煤泥等,依据生产能力2000万t/a选煤厂的洗选数据和不同粒径煤的煤质数据,结合不同煤炭气化技术对粒度和煤质的要求进行研究。提出采用不同的气化组合方式利用选煤产品,即将碎煤加压气化和粉煤加压气化相结合,利用掺混的粉煤、矸石和煤泥作为化工项目动力站的原料。结果表明:通过合理设置气化单元的系列配置和动力站原料分配,可以充分利用选煤产品,提高煤炭的利用率。经过分析提出了大型煤制天然气项目煤炭的利用方案、主工艺技术路线选择及调峰方法等。

Efficient utilization of coal in SNG project

To efficiently utilize pea coal,pulverized coal and slime in coal preparation plant,based on the preparation data of coal preparation plant whose production capacity is 20 million tons per year and relevant coal quality,analyze the coal size and quality standards for different coal gasification technologies.Provide that the coal processing products could be efficiently used by combining different coal gasification technologies,such as combining crushed coal pressure gasification technology with pulverized coal pressure gasification technology,taking the mixture of pulverized coal,gangue and slime as raw material.The results show that,the coal utilization efficiency could be improved by rationalizing gasification units and raw materials composition of power station.At last,state the final project,the main technology route and peak shaving methods for large-scale SNG projects.