张宪尚,隆清明,吕贵春
ZHANG Xianshang,LONG Qingming,LYU Guichun

• 1:瓦斯灾害监控与应急技术国家重点实验室
• 2:中煤科工集团重庆研究院有限公司
• 3:重庆大学资源与环境科学学院

摘要(Abstract)：

针对在山西晋城赵庄煤矿井下测定瓦斯解吸压力先升高后降低的异常情况,通过对仪器设备和现场环境存在的原因进行排查分析,确定是由于瓦斯解吸过程中吸热导致的罐内气体温度降低,从而出现解吸压力的测定结果异常。为了解决该问题,利用良好导热材料设计加工成煤样罐,使罐内外达到热平衡,分别研究煤样罐置于空气和水介质中的解吸压力,实验发现煤样罐放置空气中出现了先升高后降低的现象,而在水中解吸压力快速回升。依据实验室瓦斯恒温解吸装置的水浴原理,设计加工形成了双壁内充填水的煤样罐,定量研究分析了煤样甲烷气体解吸热、比热容及需水量,通过实验室测定分析赵庄煤矿煤样的瓦斯解吸规律,验证了该煤样罐能够满足工业应用要求。
Aiming at the abnormal case that gas desorption pressure increased first then decreased during underground measurement in Zhaozhuang coal mine in Jingcheng, through analysis and investigation of the possible problems of instruments and site environments, it was determined that the gas temperature reduction in the canister was induced by heat adsorption during gas desorption, thus resulting in the abnormal results of desorption pressure measurement. In order to solve this problem, good heat-conducting material was used to design and manufacture coal sample canister so as to achieve thermal balance inside and outside the canister. The desorption pressure of coal sample canister in air and water was studied. The study found that the desorption pressure in a canister in air increased first and then decreased, but the desorption pressure in a canister in water got back rapidly. According to the principle of water bath of gas desorption device of constant temperature in lab, the coal sample canisters with double walls filled with water were designed and manufactured, the adsorbed heat, the specific heat capacity and the water demand of methane were studied and analyzed quantitatively. In lab, the gas desorption law of coal samples of Zhaozhuang mine was measured and analyzed, verifying that the coal sample canister could meet the requirement of industrial application.

关键词(KeyWords)： 解吸热;瓦斯;温度;解吸压力;煤样罐
desorbed heat;gas;temperature;desorption pressure;coal sample canister

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项课题(2016ZX05045-004)~~

作者(Author): 张宪尚,隆清明,吕贵春
ZHANG Xianshang,LONG Qingming,LYU Guichun

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