新型干法水泥窑硫动态循环研究  

Study on Sulfur Cycle of Dynamic Equilibrium in NSP Cement Kiln System

作　　者：嵇鹰[1,2] 杨康[1] 徐德龙[1,2] 周蕊[1] 孙毅[1] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,西安710055 [2]西部建筑科技国家重点实验室,西安710055

出　　处：《硅酸盐通报》2011年第5期1023-1028,共6页Bulletin of the Chinese Ceramic Society

基　　金：陕西省科技工业攻关资助项目(2010K07-02);陕西省重点学科建设专项资金资助项目

摘　　要：新型干法水泥窑系统存在硫循环动态平衡,即部分硫始终处于系统当中参与动态循环,硫循环与系统结皮堵塞和SO2排放关系密切。本文通过工业现场测试,对比研究高固气比预热分解系统和普通预热分解系统的硫循环,探讨了硫收支动态平衡和硫动态循环机理,提出用硫循环度ε作为系统中硫参与循环程度的参数,用硫循环动态平衡理论对高固气比系统SO2减排优势进行了解释。研究结果表明通过对硫循环进行操控可以实现对结皮堵塞防止和SO2减排。Sulfur derived from fuels or raw meals will accumulate and circulate within NSP cement kiln systems;a sulfur circulation within system can result in choking of preheaters,and increased SO2 emission in the exit gases.In this paper,comparisons of the sulfur circulation between the high solid gas ratio preheating and precalcining system and the conventional preheating and precalcining system with data as measured in operating cement manufacturing plants.Discusses the dynamic balance of sulfur payments and mechanism of sulfur dynamic circulation.Proposed with sulfur cycle ε degrees as system in the degree of sulfur cycle parameters.Advantage in reducing SO2 emission with an application of high solid gas ratio preheating and precalcining system was also discussed.It is concluded that an effective control in sulfur circulations would alleviate choking or coating in kiln system,and lead to reduction in SO2 emission.

关 键 词：水泥窑 硫循环度 SO2减排 

分 类 号：TQ172[化学工程—水泥工业]