不同还原性气氛下ZJX煤灰结渣行为研究

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英文篇名：Study on Slagging Behavior of Zhujixi in Different Reducing Atmosphere 作者：王守飞 ; 李寒旭 ; 纪明俊 ; 胡侠 ; 徐冬柏 英文作者：Wang Shoufei;Li Hanxu;Ji Mingjun;Hu Xia;Xu Dongbai;College of Chemical Engineering,Anhui University of Science and Technology;ZhongA n United Coal Chemical Co.,Ltd.; 关键词：ZJX煤 ; 干法排渣 ; 不同还原气氛 ; 晶体矿物转化 ; 表面熔融 英文关键词：Zhu Ji Xi coal;;dry slag;;different reducing atmosphere;;crystal mineral transformation;;surface molten state 中文刊名：SDHG 英文刊名：Shandong Chemical Industry 机构：安徽理工大学化学工程学院;中安联合煤化有限责任公司; 出版日期：2019-03-23 出版单位：山东化工 年：2019 期：v.48;No.352 基金：国家自然科学基金资助项目(21376006);; 安徽省科技重大专项资助项目(15czz02045) 语种：中文; 页：SDHG201906048 页数：4 CN：06 ISSN：37-1212/TQ 分类号：139-142

摘要

以淮南矿区ZJX煤为研究对象,利用高温管式炉研究高灰熔点煤灰在不同还原气氛下的煤灰团聚(结渣)特性,探索高灰熔点淮南煤在气流床气化干法排渣技术中煤灰的结渣行为;考察了气氛对煤灰团聚(结渣)的表观形貌、机械强度的影响,采用X-射线衍射仪、扫描电镜研究不同气氛下渣样的晶体矿物转化、表面熔融状态。结果表明:随着通入气氛的还原性增强,1100℃ZJX的煤灰由团聚逐渐变成严重结渣,在N_2∶CO=6∶4气氛下,1100℃时渣样表面已出现熔融现象,晶体矿物出现硬石膏和莫来石,并且随着还原性气氛的增强,硬石膏、金红石和石英等晶体矿物相互反应,产生表面熔融是引起煤灰粘结的主要原因。
        In this paper,ZJX coal in Huainan mining area is the main study object,the agglomeration(slagging) characteristics of high ash fusion temperature coal in different reducing atmosphere were studied by high temperature tubular furnace,and the slagging behavior of coal ash in entrained flow gasification dry ash extraction technology was explored. The effects of reducing atmosphere on crystal mineral transformation and surface melting state of slag were studied by X-ray diffraction and scanning electron microscopy. The results show that with the reduction of pass into the atmosphere increased,1100 c ore by Zhu Ji Xi ash agglomeration gradually become serious slagging,under N_2∶CO=6∶4 atmosphere at 1100 DEG C of slag surface melting phenomenon,mineral crystal hard gypsum and mullite,and with the increase of temperature,anhydrite,rutile and quartz etc. mineral crystal surface melting reaction is mainly caused by the ash bond.

引文

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