生物酶处理对煤炭存储热值及堆煤温度影响的试验研究

电厂煤场储煤量巨大,储存期较长,减少煤炭在存储过程中的热值损失和自燃现象,能够提高电厂的经济效益。通过在某煤场煤堆喷洒生物酶,获得了生物酶在大规模煤堆上使用时对煤堆热值及温度的影响数据。结果表明,生物酶处理技术对于降低煤炭储存过程中的热值损失有一定效果,经处理的煤堆储存期温度升高,不利于减少煤堆的自燃。

全方位储煤筒仓安全保护系统介绍

储煤筒仓是一种将传统露天存储的煤炭在筒仓内全封闭存储的煤炭存储方式,具备环保、节能、节地、流程简单、减少存储过程损耗等优点,但同时也增加了安全掌控难度。本文介绍了一套全方位储煤筒仓安全保护系统,包含监测系统、制氮系统、空气压缩系统、吹扫扰动系统、通风系统、控制系统和消防系统。

CO2 Storage Mechanism in Coal and its Effect on Methane Production in Enhanced Coalbed Methane Recovery

In this study, we provided more theoretical method for estimation of dissolution amount and applied this method to enhanced coalbed methane recovery （ECBMR） simulator. Dissolution amount was measured by method of differential heat of adsorption. Akabira coal, a Japanese bituminous coal, was used for the experiment. The results showed that CO2 was stored in coal by both adsorption and dissolution. Using this result the methane production was calculated by ECBMR-simulator, enhanced coalbed methane recovery simulator, the University of Tokyo （ECOMERS-UT）. Total stored CO2 was separated into adsorption component and dissolution component. Only the former component contributes to the competitive adsorption. Coalbed methane （CBM） production simulation considering the dissolution showed later and smaller peak production and prolonged methane production before the breakthrough than the conventional competitive adsorption.