洁净煤技术

2020, v.26;No.129(05) 1-10

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水泥炉窑高能效低排放关键技术研发及应用进展
Research and application progress of the key technologies for high efficiency and low emission of cement kilns

姚远;魏小林;陈立新;李森;谭厚章;
YAO Yuan;WEI Xiaolin;CHEN Lixin;LI Sen;TAN Houzhang;State Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences;School of Engineering Science,University of Chinese Academy of Sciences;Beijing Hinergy Clean Energy Technology Co.,Ltd.;School of Energy and Power Engineering,Xi'an Jiaotong University;

摘要(Abstract):

工业炉窑的高能效低排放关键技术能够有效提升炉窑能源利用效率、降低污染物排放。综述了节能管控与余热利用、富氧煅烧、分级燃烧以及颗粒物分离与资源化利用等工业炉窑节能减排共性关键技术的研发及其在2 500~5 000 t/d水泥炉窑上的集成应用。基于工业炉窑物质流与能量流的匹配关系,开展了节能管控平台的设计,开发了满足多品种工艺目标要求的水泥炉窑能量流优化重组节能新技术,并进行了水泥炉窑物质流与能量流匹配的节能管理平台工业示范的实施;采用低能变压吸附制氧技术与水泥熟料煅烧有机结合的新工艺,研发了满足产品种类及产量质量宽阈度变化生产的水泥炉窑富氧煅烧技术,并进行了工业示范;针对NOx和SOx等高排放问题,综合优化了分解炉分级燃烧、SNCR脱硝等技术,并进行了水泥分解炉分级燃烧和SNCR优化脱硝技术工业示范的实施;针对排放物减排与资源化利用,研发了烟气深度降温除尘颗粒排放物的净化分离与再利用新技术,并进行了工业炉窑气固排放物质的高效分离与洁净利用技术工业示范的实施,实现了颗粒物洁净排放及资源化利用。
The key technologies for high energy efficiency and low emission of industrial furnaces can effectively improve the energy utilization efficiency and reduce pollutant emissions. In this paper,the research of common key technologies for energy conservation and emission reduction in industrial furnaces were reviewed,such as energy-saving management and waste heat utilization,oxygen-enriched calcination,staged combustion,particle separation and resource utilization,and their integrated applications in 2 500-5 000 t/d cement kilns. Based on the matching relationship between the material and energy flow of industrial furnaces,the design of an energy-saving management platform was carried out. New energy-saving technologies for optimization and reorganization of energy flow in cement kilns were developed to meet the requirements of multiple types process goals. The industrial demonstration of the energy-saving management platform matching the material and energy flow in cement kilns has been implemented. The oxygen-enriched calcination technologies in cement kilns was developed by organically combining low-energy pressure-swing-adsorption and cement clinker calcination,which can meet the wide threshold variation in production of product category and output quality,and their industrial demonstrations was carried out.In view of the problems of high emissions such as NOxand SOx,the stage combustion and SNCR denitration technologies in decomposition furnace were comprehensively optimized. The industrial demonstration of the technologies for the staged combustion and SNCR optimized denitrificationin cement decomposition furnace has been conducted. Aiming at emission reduction and resource utilization,the new technologies for particulate emissions purification,separation and reuse in deep cooling and dust removal of flue gas have been proposed. The industrial demonstration of efficient separation and clean utilization of gas-solid emissions in industrial furnaces has been put into effect. The clean emission and resource utilization of particulate matter have been realized.

关键词(KeyWords): 水泥炉窑;节能管控;富氧煅烧;分级燃烧与SNCR;气固排放
cement kiln;energy-saving management and control;oxygen-rich calcination;staged combustion and SNCR;gas-solid emissions

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2016YFB0601501)

作者(Author): 姚远;魏小林;陈立新;李森;谭厚章;
YAO Yuan;WEI Xiaolin;CHEN Lixin;LI Sen;TAN Houzhang;State Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences;School of Engineering Science,University of Chinese Academy of Sciences;Beijing Hinergy Clean Energy Technology Co.,Ltd.;School of Energy and Power Engineering,Xi'an Jiaotong University;

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DOI: 10.13226/j.issn.1006-6772.IF20080621

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