叶兴联. 脱硫废水旋转雾化蒸发塔的流场特性模拟研究. 力学与实践, xxxx, x(x): 1-11. doi: 10.6052/1000-0879-23-274
引用本文: 叶兴联. 脱硫废水旋转雾化蒸发塔的流场特性模拟研究. 力学与实践, xxxx, x(x): 1-11. doi: 10.6052/1000-0879-23-274
Ye Xinglian. Simulation study on flow field characteristics of rotary atomization evaporation tower for desulfurization wastewater. Mechanics in Engineering, xxxx, x(x): 1-11. doi: 10.6052/1000-0879-23-274
Citation: Ye Xinglian. Simulation study on flow field characteristics of rotary atomization evaporation tower for desulfurization wastewater. Mechanics in Engineering, xxxx, x(x): 1-11. doi: 10.6052/1000-0879-23-274

脱硫废水旋转雾化蒸发塔的流场特性模拟研究

SIMULATION STUDY ON FLOW FIELD CHARACTERISTICS OF ROTARY ATOMIZATION EVAPORATION TOWER FOR DESULFURIZATION WASTEWATER

  • 摘要: 通过热态实验对比验证了数值模型的可行性和结果的可靠性。在此基础上,以某600MW燃煤机组旋转雾化蒸发塔为研究对象,开展了流场特性研究。结果表明,随着轴向距离的增大,雾滴的蒸发速率会逐渐降低,径向上的分布范围会逐渐变广,最大粒径和中值粒径会逐步减小;塔体直筒中下部碰壁概率大于上部,且靠近灰斗的区域增幅明显,是相对易结垢区域;设计范围内,塔径和塔高对雾滴的蒸发过程影响较小,适当降低塔径和塔高可以降低产物碰壁概率;无导向锥时,导流装置易出现结垢,导向锥体的存在对烟气起到聚拢作用,但过高的导向锥会增加较大的阻力。

     

    Abstract: The feasibility of the numerical model and the reliability of the results were verified through hot state experiments. On this basis, a study was conducted on the flow field characteristics of the rotating atomization evaporation tower of a 600MW coal-fired unit. The results show that as the axial distance increases, the evaporation rate of droplets gradually decreases, the radial distribution range gradually widens, and the maximum and median particle sizes gradually decrease. The probability of hitting the wall in the lower part of the tower is greater than that in the upper part, and the area near the ash hopper has a significant increase, making it a relatively easy area for scaling. Within the design scope, the diameter and height of the tower have a relatively small impact on the evaporation process of droplets, and appropriately reducing the diameter and height of the tower can reduce the probability of product wall collision. When there is no guide cone, the guide device is prone to scaling, and the presence of the guide cone plays a role in gathering flue gas, but excessively high guide cones will incur higher resistance.

     

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