| 密相干塔烧结烟气脱硫系统仿真研究 |
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| 引用本文： | 张东辉, 王卓晖, 宋存义, 贾纤, 卢熙宁. 密相干塔烧结烟气脱硫系统仿真研究[J]. 工程科学学报, 2012, 34(11): 1325-1331. DOI: 10.13374/j.issn1001-053x.2012.11.017 |
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| 作者姓名： | 张东辉 王卓晖 宋存义 贾纤 卢熙宁 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院, 北京 100083; |
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| 摘 要： | 应用Fluent软件对密相干塔模拟仿真,研究了烟气整流系统和链式搅拌器对烟气流场和湍流、循环灰轨迹及系统压力损失的影响,并在模拟工况下确定了烟气整流系统较优导流板布置形式.研究结果表明,链式搅拌器能够显著增大塔内附近区域的湍动能,提高转速不能明显提高整体烟气湍流强度,双层链式搅拌器可以增大高湍流强度区且减缓其衰减速度,该工况下安装双层链式搅拌器,转速为100 r·min-1较为理想,此时密相干塔能够实现烟气均布和气固充分接触,大部分颗粒参与内循环,少部分进入除尘器,系统压损约为200 Pa.
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| 关 键 词： | 烧结 烟气 脱硫 计算机模拟 流场 湍流 颗粒轨迹 |
| 收稿时间： | 2011-09-26 |
Simulation study on desulfurization of sintering flue gas in a dense flow absorber |
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| ZHANG Dong-hui, WANG Zhuo-hui, SONG Cun-yi, JIA Xian, LU Xi-ning. Simulation study on desulfurization of sintering flue gas in a dense flow absorber[J]. Chinese Journal of Engineering, 2012, 34(11): 1325-1331. DOI: 10.13374/j.issn1001-053x.2012.11.017 |
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| Authors: | ZHANG Dong-hui WANG Zhuo-hui SONG Cun-yi JIA Xian LU Xi-ning |
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| Affiliation: | 1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. China Coal Coking & Chemical Holding Co. Ltd., Beijing 100011, China |
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| Abstract: | A numerical simulation of a dense flow absorber with Fluent software was performed to study the effects of the flue gas rectifier system and the chain agitator on the flow field and turbulent flow of flue gas, the trajectory of circulating ash and the pressure loss of the dense flow absorber. The optimal layout form of the baffle plate was determined under the simulated condition. It is found that the chain agitator obviously amplifies the turbulent kinetic energy inside the dense flow absorber, while the increase of revolving speed cannot obviously improve the whole turbulent intensity of flue gas. The double-deck chain agitator can enlarge the area with high turbulent intensity and retard turbulent dissipation. Under this condition, the desired speed of the double-deck chain agitator is 100 r·min-1. Meanwhile, the uniform distribution of flue gas inside the dense flow absorber and the gas-solid sufficient contact can be realized, most of particles are involved in internal recycling, and a small quantity of particles enter the dust catcher. The pressure loss of the system is approximately 200 Pa. |
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| Keywords: | sintering flue gases desulfurization computer simulation flow fields turbulence particle tracks |
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