球团烟气密相干塔脱硫-除尘一体化系统优化

史元良; 童震松; 宋存义

doi:10.13228/j.boyuan.issn0449-749x.20150226

钢铁 ›› 2015, Vol. 50 ›› Issue (12) : 72-79. DOI: 10.13228/j.boyuan.issn0449-749x.20150226

环保与能源

球团烟气密相干塔脱硫-除尘一体化系统优化

史元良^1,2，童震松^1,2，宋存义^1,2

作者信息 +

Simulation on desulfurization of sintering flue gas indense flow absorber integrated bag-filter

史元良^1,2，童震松^1,2，宋存义^1,2

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文章历史 +

摘要

为探明脱硫-除尘一体化系统内反应密集区以及因袋式除尘器远端利用率不高而导致除尘效率低下的原因，急需对一体化系统内流场分布进行研究。应用Fluent软件对密相干塔脱硫-除尘一体化系统进行仿真模拟，标准[κ-ε]湍流模型模拟气相流动，离散相（DPM）模型模拟固相流动，对改进前后的一体化系统进行模拟。模拟结果表明：除尘器内部增加气流板及改变风口布置方式对烟气在除尘器内的均匀流动都起到了良好的作用，其中改变风口布置方式效果更显著。密相干塔内部导流板最优设计长度为7.5 m，角度为45 °。

Abstract

In order to find active reaction zone of dense flow absorber and the reason that why the distal end of bag-filter was not highly used， it was urgent to study the internal flow field distuibution and the change of pressure field． In this paper， the system of a dense flow absorber integrated bag-filter was simulated with Fluent software before and after improvement． The two-equation turbulence model and discrete phase model(DPM) were used to simulate the gas phase flow and solid phase flow， respectively． Results of the simulation showed that changing the layout of outlets had much more positive effects on the homogeneous flow inside bag-filter than adding the baffle plate inside bag-filter． The empirical study also indicated that the most optimized design of the baffle plate inside the dense flow absorber was 7.5 m in length and 45 degree in angle．

关键词

密相干塔 / 布袋除尘器 / 球团 / 颗粒轨迹 / 数值模拟

Key words

dense flow absorber / bag-filter / pelletizing / particle tracks / simulation

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史元良, 童震松, 宋存义. 球团烟气密相干塔脱硫-除尘一体化系统优化[J]. 钢铁, 2015, 50(12): 72-79 https://doi.org/10.13228/j.boyuan.issn0449-749x.20150226

SHI Yuan-Liang, ZHONG Shen-Song, SONG Cun-Xi. Simulation on desulfurization of sintering flue gas indense flow absorber integrated bag-filter[J]. Iron and Steel, 2015, 50(12): 72-79 https://doi.org/10.13228/j.boyuan.issn0449-749x.20150226

中图分类号： TF09

参考文献

[1] 张奇．烧结烟气脱硫技术分析．矿业工程[J]．2014，12(01)：47-49．
[2] 党玉华，齐渊洪，王海风．烧结烟气脱硫技术．钢铁研究学报[J]，2010，22(05)：1-6．
[3] 李萌萌．基于CFD对袋式除尘器流场的数值模拟分析[学位论文]．武汉科技大学，2010．
[4] B．Du，W．Warsito，L．S．Fan，ECT studies of the choking phenomenon in a gas–solid circulating fluidized bed[J]，AIChE Journal，2004，50 (7)：1386-1406．
[5] Ollero P，Gutiérrez Ortiz F J，Cabanillas A，et al． Flue-Gas Desulfurization in Circulating Fluidized Beds： An Empirical Model from an Experimental Pilot-Plant Study[J]．Industrial & Engineering Chemistry Research，2001，40(23)：5640-5648．
[6] 白泽宇．复杂多相流动的数值模拟与分析[学位论文]．北京理工大学，2014．
[7] Tsuji Y，Kawaguchi T．Discrete particle simulation of two-dimensional fluidized bed[J]．Power Technology，1993，77 (01)：79-87．
[8] C．Y．Chu， S．J．Hwang，Flue gas desulfurization in an internally circulating fluidized bed reactor[J]，Powder Technology，2005，154 (11)：14–23．
[9] 汪军盛，叶猛，朱廷钰，等．循环流化床脱硫反应器流场特性实验研究[J]．贵州大学学报(自然科学版)，2014，31(02)：129—135．
[10] 沈志恒．循环流化床颗粒团聚作用的气固两相流动数值模拟[学位论文]．哈尔滨工业大学，2010．
[11] 查旭东，樊建人，郑友取，等．采用欧拉和拉格朗日混合模型对浓相颗粒流的研究[J]．动力工程．2000，20(05)：884-891．
[12] J．Zhang， C．You，S．Zhao，C．Chen， H．Qi，Characteristics and reactivity of rapidly hydrated sorbent for semidry flue gas desulfurization[J]，Environmental Science and Technology 2008，42 (05)：1705–1710．
[13] B．Du，L．S．Fan，Characteristics of choking behavior in circulating fluidized beds for Group B particles[J]，Industrial Engineering Chemistry Res 2004，43(18)：5507–5520．
[14] Chang G，Song C，Wang L．A modeling and experimental study of flue gas desulfurization in a dense phase tower[J]．Journal of Hazardous Materials，2011，189 (1-2)：134-140．
[15] 张东辉，王卓晖，宋存义，等．密相干塔烧结烟气脱硫系统仿真研究．北京科技大学学报[J]．2012，34(11)：1325-1331．
[16] 黄卫星，肖泽仪，石炎福，等．气固两相上行流动中颗粒加速行为的研究[J]．化学反应工程与工艺．2001，17(2)：101-106．