CFB锅炉石灰石粉制备系统研究  

Study on the Limestone Preparation System of CFB Boilers

作　　者：曾兵[1] 万承军[1] 刘毅[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院,广东广州510663

出　　处：《中国电力》2014年第4期153-159,共7页Electric Power

摘　　要：循环流化床(CFB)锅炉石灰石粉制备系统的产品粒度分布特性直接影响着炉内脱硫效果及石灰石粉的利用率,细碎和分选是石灰石粉粒度控制的关键环节。为有效控制石灰石粉粒度和降低生产成本,越来越多拥有CFB锅炉的电厂放弃外购成品石灰石粉,选择在厂内配置石灰石粉制备系统。结合工程实例,简单介绍石灰石的细碎和分选设备,重点对"AUBEMA破碎机+振动筛"、"柱磨机+瀑流式选粉机"和FAM公司细碎机等3种石灰石粉制备系统的技术经济性进行了对比和分析。研究结果表明,柱磨机配套瀑流式选粉机的制备系统具有经济性好、单机出力大、对石灰石粉含水率不敏感、维护工作量小等优点,是大型CFB锅炉石灰石粉制备系统较为合理的选择。The particle size distribution of limestone produced by limestone preparation system （LPS） directly influences the control of furnace desulphurization and the utilization ratio of limestone. The fine crushing and screening are the keys of the LPS to control the particle size. To effectively control the particle size and reduce the production costs, more and more plants with circulating fluidized bed （CFB） boilers choose to build their own LPS instead of purchasing limestone. In this paper, based on the engineering practice, the equipments for limestone crushing and separation are introduced. The focus is on the analysis of the technical and economic performance of three different LPSs, i.e. AUBEMA crusher ＋ vibrating screen, column mill ＋ PL type powder separator and the crusher fabricated by FAM. The study indicates that the LPS of column mill equipped with PL type powder separator has better economic performance, higher unit output, less moisture sensitivity and lower maintenance requirement. Therefore, it is a reasonable choice for the LPS of large scale CFB boilers.

关 键 词：循环流化床 脱硫 石灰石粉制备 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程] TQ177.26[化学工程—硅酸盐工业]