矿物组分对煤热解过程的影响及其机理研究

项目名称： 矿物组分对煤热解过程的影响及其机理研究

项目编号： No.51276160

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 能源与动力工程

项目作者： 王勤辉

作者单位： 浙江大学

项目金额： 80万元

中文摘要： 为了高效利用煤炭资源中的高价值组分，同时获取电力、热能、化学产品和液体燃料，基于固体热载体热解的煤热解气化燃烧分级转化技术得到了越来越大的关注。在这一技术背景下，开展固体热载体煤灰矿物组分以及煤自身固有矿物组分对煤热解的影响规律及其机理方面的研究工作就显得尤为迫切。国内外对煤自身固有矿物质以及添加金属盐类、金属氧化物等无机物对煤热解过程的催化作用进行了探索，但往往局限于煤中非矿物相的矿物质对煤热解影响方面的研究，对煤中矿物相以及煤灰矿物组分对煤热解影响方面的研究甚少涉及，因此无法全面地、系统地揭示矿物组分对煤热解过程的影响规律及其机理。本项目拟开展不同煤种、不同热解气氛、不同压力条件下煤以及煤灰中矿物组分对煤热解过程（热解产物组分及其产率）的影响规律及其机理的研究，并建立在大量煤灰存在条件下煤与煤灰共热解模型，为煤热解气化燃烧分级转化装置的设计和运行提供指导。

中文关键词： 煤热解；矿物质；煤灰；固定床；流化床

英文摘要： More and more attention is paid to coal pyrolysis-gasification-combustion staged conversion technology based on solid heat carrier coal pyrolysis in order to efficiently utilize the high value components from coal and produce power, heat, chemicals and liquid fuel. Hot coal ash is usually used as solid heat carrier during coal pyrolysis, so that it is urgent to carry out mechanism research on influence of mineral of coal ash and coal on coal pyrolysis. Although some research work has been done to explore catalytic effect of inherent mineral in coal as well as inorganic matter such as metal salts and oxides on coal pyrolysis at home and abroad, it is often more about the non- mineral-phase inorganic matter in coal while rarely refers to the mineral-phase mineral in coal and coal ash, thus influence of the latter on coal pyrolysis and its mechanism is unable to be demonstrated comprehensively and systematically. This project is to conduct mechanism research on influence of mineral in coal and coal ash on coal pyrolysis (pyrolysates' composition and their yield) at different coal ranks, different pyrolysis atmosphere and different pressures, and establish coal and coal ash co-pyrolysis model under the condition of existence of a great amount of heat carrier ash, which will provide guidance for design and operation

英文关键词： coal pyrolysis；mineral matter；coal ash；fixed bed；fluidized bed