含碳基质预处理及热解气化反应机理研究
摘 要
含碳基质的高效利用对于能源转型和环境保护具有重要意义。本研究聚焦于含碳基质预处理及热解气化反应机理，旨在通过系统分析不同预处理方法对含碳基质结构特性的影响，揭示其在热解气化过程中的转化规律。研究选取典型含碳基质为对象，采用物理、化学预处理手段改变其微观结构与表面性质，结合热重分析、气相色谱-质谱联用等技术表征预处理前后样品的热稳定性和产物分布特征。结果表明，预处理显著影响含碳基质的热解行为，其中碱处理有效提高了生物质类含碳基质的热解气化效率，而酸处理则促进了煤基含碳基质中矿物质的溶解，降低了灰分含量并改善了气化性能。
关键词：含碳基质预处理 热解气化反应机理 生物质
Abstract
The efficient use of carbon-containing matrix is of great significance for the energy transition and environmental protection. This study focuses on the reaction mechanism of carbon-containing matrix pretreatment and pyrolysis and gasification, aiming to systematically analyze the influence of different pretreatment methods on the structural characteristics of carbon-containing matrix, and reveal the conversion rules in the process of pyrolysis and gasification. In this study, the typical carbon-containing matrix was selected as the ob ject, using physical and chemical pretreatment methods to change its microstructure and surface properties, and characterized the thermal stability and product distribution characteristics of samples before and after pretreatment in combination with thermal weight analysis and gas chromatography-mass spectrometry. The results showed that pretreatment significantly affects the pyrolysis behavior of carbon-containing matrix, in which alkali treatment effectively improves the pyrolysis and gasification efficiency of biomass carbon-containing matrix, while acid treatment promotes the dissolution of minerals in coal-based carbon-containing matrix, reduces the ash content and improves the gasification performance.
Keyword:Carbonaceous Matrix Pretreatment Pyrolysis Gasification Reaction Mechanism Biomass
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3研究方法与技术路线 2
2含碳基质预处理技术 2
2.1预处理工艺选择 2
2.2物理预处理方法 3
2.3化学预处理方法 3
2.4生物预处理方法 4
3热解气化反应特性 4
3.1热解气化基本原理 4
3.2反应温度对产物影响 5
3.3气氛环境对反应影响 5
3.4催化剂作用机制分析 6
4反应动力学及机理 6
4.1动力学模型建立 7
4.2关键反应步骤解析 7
4.3中间产物演化规律 8
4.4反应路径优化建议 8
结论 9
参考文献 10
致谢 11
摘 要
含碳基质的高效利用对于能源转型和环境保护具有重要意义。本研究聚焦于含碳基质预处理及热解气化反应机理，旨在通过系统分析不同预处理方法对含碳基质结构特性的影响，揭示其在热解气化过程中的转化规律。研究选取典型含碳基质为对象，采用物理、化学预处理手段改变其微观结构与表面性质，结合热重分析、气相色谱-质谱联用等技术表征预处理前后样品的热稳定性和产物分布特征。结果表明，预处理显著影响含碳基质的热解行为，其中碱处理有效提高了生物质类含碳基质的热解气化效率，而酸处理则促进了煤基含碳基质中矿物质的溶解，降低了灰分含量并改善了气化性能。
关键词：含碳基质预处理 热解气化反应机理 生物质
Abstract
The efficient use of carbon-containing matrix is of great significance for the energy transition and environmental protection. This study focuses on the reaction mechanism of carbon-containing matrix pretreatment and pyrolysis and gasification, aiming to systematically analyze the influence of different pretreatment methods on the structural characteristics of carbon-containing matrix, and reveal the conversion rules in the process of pyrolysis and gasification. In this study, the typical carbon-containing matrix was selected as the ob ject, using physical and chemical pretreatment methods to change its microstructure and surface properties, and characterized the thermal stability and product distribution characteristics of samples before and after pretreatment in combination with thermal weight analysis and gas chromatography-mass spectrometry. The results showed that pretreatment significantly affects the pyrolysis behavior of carbon-containing matrix, in which alkali treatment effectively improves the pyrolysis and gasification efficiency of biomass carbon-containing matrix, while acid treatment promotes the dissolution of minerals in coal-based carbon-containing matrix, reduces the ash content and improves the gasification performance.
Keyword:Carbonaceous Matrix Pretreatment Pyrolysis Gasification Reaction Mechanism Biomass
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3研究方法与技术路线 2
2含碳基质预处理技术 2
2.1预处理工艺选择 2
2.2物理预处理方法 3
2.3化学预处理方法 3
2.4生物预处理方法 4
3热解气化反应特性 4
3.1热解气化基本原理 4
3.2反应温度对产物影响 5
3.3气氛环境对反应影响 5
3.4催化剂作用机制分析 6
4反应动力学及机理 6
4.1动力学模型建立 7
4.2关键反应步骤解析 7
4.3中间产物演化规律 8
4.4反应路径优化建议 8
结论 9
参考文献 10
致谢 11
