双膛石灰竖窑粉尘排放特性及控制技术研究  

Research on dust emission characteristics and control technology of TSR lime kiln

作　　者：王跃[1] 周浩宇[1] 刘前 万忠炎 潘绍兵 曾文波[1] 李峰 Wang Yue;Zhou Haoyu;Liu Qian;Wan Zhongyan;Pan Shaobing;Zeng Wenbo;Li Feng(Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,China;Xianfu Iron and Steel Co.,Ltd.,Yuxi 653401,China)

机构地区：[1]中冶长天国际工程有限责任公司,长沙410205 [2]仙福钢铁有限公司,玉溪653401

出　　处：《耐火与石灰》2024年第2期22-26,共5页Refractories & Lime

摘　　要：分析了石灰双膛竖窑在泄压过程中的粉尘排放特性,初始冲击波压力过高导致烟气无法直连布袋除尘器,这是造成粉尘污染的主要原因。弄清了初始冲击波的形成、传播与演化行为特征,比对了延长直管长度、增加弯管数量、增加变径结构与泄压腔体三种方式对冲击波压力的衰减效果,提出了一种基于压块泄压阀的柔性泄压直联布袋技术,将放散烟气初始冲击波压力由8 kPa降至1 kPa,达到烟气直连布袋、环境粉尘污染得到大幅改善的效果。同时,针对粉尘在阀体和管道中易沉降的难题,提出了一种基于3通内旋阀的扇形旋塞防沉降技术,解决了粉尘在阀体与管道系统内的沉降难题。The paper analyzes the dust emission characteristics of the TSR lime kiln during the pressure relief process,identifices the main reason for dust pollution lies in the initial shock wave caused by high pressure,which prevents the flue gas from directly going to the bag filter.The paper clarifies the characteristics of the formation,propagation,and evolution behavior of the initial shock wave,compares the attenuation effects of extending the length of the straight pipe,providing more bends,and installing a flare structure and pressure relief chamber on the shock wave pressure,and proposes a direct-connection bag filter technology for flexible pressure relief based on a block pressure relief valve.The initial shock wave pressure of the exhausted flue gas is reduced from 8 kPa to 1 kPa,making the flue gas go directly to the bag filter.The environmental dust pollution has been significantly improved.In addition,a fan-shaped plug anti-settling technology based on a three-way internal rotary valve is proposed in response to the problem of dust settling in the valve body and pipeline system.

关 键 词：双膛石灰竖窑 粉尘排放特性 粉尘控制 柔性泄压阀 扇形内旋阀 

分 类 号：TQ175.653.6[化学工程—硅酸盐工业]