水泥工业窑灰-石膏湿法脱硫系统物料平衡及水平衡工艺流程优化  

Optimization of Material Balance and Water Balance Process Flow for Cement Industry Kiln Ash-gypsum Wet Desulfurization System

作　　者：冯海军 王道斌[2] Haijun;WANG Daobin(Tianshan Materials Co.,Ltd.,Shanghai 200126,China;Tianjin Cement Industry Design&Research Institute Co.,Ltd.,Tianjin 300400,China)

机构地区：[1]天山材料股份有限公司,上海200126 [2]天津水泥工业设计研究院有限公司,天津300400

出　　处：《水泥技术》2025年第1期20-24,共5页Cement Technology

摘　　要：鉴于国家对大气污染物排放标准的日益严格,众多水泥厂采用窑灰-石膏湿法脱硫系统以实现高效脱硫。然而,常规窑灰-石膏湿法脱硫系统存在物料平衡及水平衡工艺流程复杂、投资及运行成本较高、占地面积大等问题。基于常规窑灰-石膏湿法脱硫工艺提出了一种优化方案,通过取消一级、二级石膏脱水设备及相应的配套设施,简化了脱硫工艺流程,并将事故浆液直接输送至窑头篦式冷却机,实现了物料平衡及水平衡工艺流程的简化。此外,在该优化方案中,事故浆液罐新增了向窑头篦式冷却机内喷入浆液的功能,通过流量计监测浆液流量,可调节物料平衡。以国内某5000t/d熟料生产线为例,此优化方案降低了一次性投资约90万元,每年可节约运行成本17.35万元,经济效益显著,对窑头废气及熟料质量的影响较小。Considering the increasingly strict national standards for air pollutant emissions,many cement plants adopt kiln ash-gypsum wet desulfurization systems to achieve efficient desulfurization.However,the conventional kiln ash-gypsum wet desulfurization system has problems such as complex material balance and water balance process flow,high investment and operating costs,and large footprint.An optimization scheme based on the conventional kiln ash-gypsum wet desulfurization process is proposed,which simplifies the desulfurization process by eliminating the first and second stage gypsum dehydration equipment and corresponding supporting facilities.The accident slurry is directly transported to the grate cooler,achieving the simplification of material balance and water balance process flow.In addition,in this optimization plan,the accident slurry tank has added the function of spraying slurry into the grate cooler at the kiln head.The slurry flow rate can be monitored by a flowmeter to adjust the material balance.Taking a domestic 5000 t/d clinker production line as an example,this optimization plan reduces the one-time investment by about 0.9 million yuan and can save operating costs of 0.1735 million yuan per year.The economic benefits are significant,and the impact on kiln head exhaust gas and clinker quality is relatively small.

关 键 词：湿法脱硫 石膏脱水 物料平衡 事故浆液 流量计 

分 类 号：TQ172.622.19[化学工程—水泥工业]