空气湿度对煤自燃特征参数及热效应的影响研究
TD75.2; 为了考察不同湿度条件对煤自燃过程参数及热效应的影响,搭建了湿度可调的精密型空气发生装置,并与煤自燃程序升温氧化装置联用,测定煤自燃过程指标性气体的释放规律;利用热分析设备定量表征不同空气湿度条件下煤自燃热量释放规律;结合数值模拟方法探究空气湿度对煤自燃过程热效应影响.结果表明:通入潮湿空气可显著提高煤样耗氧速率,促进CO和CO2 的生成,空气湿度对煤自燃过程热效应呈现出阶段性特征;水分在刚接触到煤体时,短时间内会释放大量的吸附热,促进煤体升温;空气中水分参与煤自燃体系热效应主要通过水的吸附热、煤氧反应热、热对流和热传导 4 个途径,其中吸附热和导热传热起到主导作用....
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| Published in | 矿业安全与环保 Vol. 50; no. 3; pp. 74 - 80 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
山西工程职业学院,山西 太原 030032%太原理工大学 矿业工程学院,山西 太原 030024%山西晋神沙坪煤业有限公司,山西 忻州 034000
01.06.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1008-4495 |
| DOI | 10.19835/j.issn.1008-4495.2023.03.013 |
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| Abstract | TD75.2; 为了考察不同湿度条件对煤自燃过程参数及热效应的影响,搭建了湿度可调的精密型空气发生装置,并与煤自燃程序升温氧化装置联用,测定煤自燃过程指标性气体的释放规律;利用热分析设备定量表征不同空气湿度条件下煤自燃热量释放规律;结合数值模拟方法探究空气湿度对煤自燃过程热效应影响.结果表明:通入潮湿空气可显著提高煤样耗氧速率,促进CO和CO2 的生成,空气湿度对煤自燃过程热效应呈现出阶段性特征;水分在刚接触到煤体时,短时间内会释放大量的吸附热,促进煤体升温;空气中水分参与煤自燃体系热效应主要通过水的吸附热、煤氧反应热、热对流和热传导 4 个途径,其中吸附热和导热传热起到主导作用. |
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| AbstractList | TD75.2; 为了考察不同湿度条件对煤自燃过程参数及热效应的影响,搭建了湿度可调的精密型空气发生装置,并与煤自燃程序升温氧化装置联用,测定煤自燃过程指标性气体的释放规律;利用热分析设备定量表征不同空气湿度条件下煤自燃热量释放规律;结合数值模拟方法探究空气湿度对煤自燃过程热效应影响.结果表明:通入潮湿空气可显著提高煤样耗氧速率,促进CO和CO2 的生成,空气湿度对煤自燃过程热效应呈现出阶段性特征;水分在刚接触到煤体时,短时间内会释放大量的吸附热,促进煤体升温;空气中水分参与煤自燃体系热效应主要通过水的吸附热、煤氧反应热、热对流和热传导 4 个途径,其中吸附热和导热传热起到主导作用. |
| Author | 王俊峰 王晨 范耀庭 迟克勇 李小平 |
| AuthorAffiliation | 山西工程职业学院,山西 太原 030032%太原理工大学 矿业工程学院,山西 太原 030024%山西晋神沙坪煤业有限公司,山西 忻州 034000 |
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| Author_FL | FAN Yaoting WANG Chen LI Xiaoping CHI Keyong WANG Junfeng |
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| Keywords | 空气湿度 煤自燃 数值模拟 热效应 阶段特征 吸附热 |
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| Snippet | TD75.2; 为了考察不同湿度条件对煤自燃过程参数及热效应的影响,搭建了湿度可调的精密型空气发生装置,并与煤自燃程序升温氧化装置联用,测定煤自燃过程指标性气体的释放规... |
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| Title | 空气湿度对煤自燃特征参数及热效应的影响研究 |
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