水泥生产系统富氧燃烧改造的性能模拟优化  

Simulation optimization of oxygen-fuel combustion retrofitting of cement production system

作　　者：陈涛[1] 王玉亭 周月桂[2] CHEN Tao;WANG Yuting;ZHOU Yuegui(College of Smart Energy,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Thermal Energy Engineering,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学国家电投智慧能源创新学院,上海200240 [2]上海交通大学机械与动力工程学院热能工程研究所,上海200240

出　　处：《洁净煤技术》2025年第2期181-189,共9页Clean Coal Technology

基　　金：国家自然科学基金资助项目(51976120)。

摘　　要：以日产3000t熟料的水泥干法生产设备为研究对象,采用AspenPlus软件建立了水泥生产系统富氧燃烧改造的工艺流程模型,研究了采用富氧煤粉燃烧方式生产水泥熟料的系统能量效率和CO_(2)捕集成本。结果表明:在相同的水泥熟料生产条件下,当烟气再循环率为51%时,富氧燃烧气氛下系统沿程温度分布与空气气氛下相匹配,此时富氧燃烧整体氧气体积分数为26.4%。富氧燃烧方式需要配置的空气分离装置和CO_(2)纯化压缩装置将导致系统能量效率比传统生产方式下降18.9%,并且采用该方式生产1t水泥熟料需花费532.1元。但在CO_(2)捕集成本方面,采用富氧煤粉燃烧技术生产水泥熟料的系统CO_(2)捕集成本为227.3元/t,比传统的燃烧后CO_(2)捕集成本降低了58%。因此,对水泥熟料采用富氧燃烧技术生产,可以保证熟料的产量和品质,同时CO_(2)捕集成本也比燃烧后CO_(2)捕集成本更低,具有显著优势。The dry process cement production equipment with a daily production capacity of 3,000 tonnes of clinker was taken as the research object,and Aspen Plus software was used to establish the corresponding production process model.The system energy efficiency of cement clinker production by using oxygen-fuel pulverised coal combustion was investigated,as well as the CO_(2) capture and integration of the system.The results show that a flue gas recirculation rate of 51% results in an oxygen-fuel atmosphere with the overall oxygen concentration of 26.4% with the temperature profile of the system closest to the air atmosphere at the same cement clinker input condition.The air separation device and CO_(2) purification and compression device required for oxygen-fuel combustion will lead to a decrease in the energy efficiency of the system,which is 18.9% lower than that of the traditional method,and the production of 1 tonne of cement clinker using this method costs 532.1 yuan.However,the CO_(2) capture cost of the system for cement clinker production using oxygen-fuel pulverised coal combustion technology is 227.3 yuan/t,which is 58% lower than that of the traditional post-combustion CO_(2) capture cost.Accordingly,the use of oxygen-fuel combustion technology for cement clinker production not only ensures the clinker yield and quality,but also has a significant carbon capture cost advantage as the CO_(2) capture cost is lower than that of post-combustion carbon capture technologies.

关 键 词：水泥生产 富氧燃烧 热力性能优化 技术经济性分析 系统集成 

分 类 号：TQ172.6[化学工程—水泥工业] X781.5[化学工程—硅酸盐工业]