Numerical simulation of cooling tower for low-temperature adsorption of co-fired flue gas

王新烨; 李珂; 黄珂楠; 施子福; 李培; 周永刚

doi:10.19666/j.rlfd.202411239

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Numerical simulation of cooling tower for low-temperature adsorption of co-fired flue gas

Thermal Power Generation Vol. 54, Issue 9, Pages: 145-153(2025)

更新时间：2026-08-11

- Numerical simulation of cooling tower for low-temperature adsorption of co-fired flue gas
- 作者机构：
  
  1. 浙江科技大学能源与环境系统工程系
  2. 浙江大学能源清洁利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202411239
  CLC： X773
- Published：2025
- 稿件说明：
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[1]王新烨,李珂,黄珂楠,等.燃煤烟气低温吸附冷却塔数值模拟[J],2025,54(09):145-153.
[1]王新烨,李珂,黄珂楠,等.燃煤烟气低温吸附冷却塔数值模拟[J],2025,54(09):145-153. DOI： 10.19666/j.rlfd.202411239.

DOI：10.19666/j.rlfd.202411239.

摘要

低温吸附协同脱除燃煤烟气污染物技术是一种有效的污染控制手段，能够实现多种污染物的近零排放。聚焦烟气喷淋冷却塔，采用ANSYS Fluent软件对冷却塔内部进行了数值模拟，分析了多种参数的影响。研究表明：增大喷淋高度，可以有效延长烟气与冷却水的接触时间，从而显著增强换热效果；降低喷淋冷却水的温度能强化冷却塔的降温能力；此外，适当减少入口烟气的流速可以增加烟气在塔内的滞留时间，有助于气液热量交换更为充分；减小冷却水液滴的直径可以增加接触面积，增强换热；增大喷淋角度可以增加冷却水在喷淋冷却塔内的滞留时间，延长烟气与冷却水之间接触时间，增强换热；增大冷却水流量可以增大烟气与冷却水的换热面积，增强换热；填料的设置可以有效提高喷淋冷却塔的换热能力，同时节约冷却水用量。综合优化这些参数可以有效降低冷却烟气的温度，为低温吸附协同脱除燃煤烟气污染物技术中喷淋冷却塔的设计制造及优化提供了理论支持。

Abstract

Low-temperature adsorption technology for coal-fired flue gas pollutants can synergistically remove various pollutants and achieve near-zero emission. Focusing on the key equipment of this technology

flue gas spray cooling tower

ANSYS Fluent software is used to simulate the inside of the tower

and the impacts of various parameters are analyzed. The results indicate that

increasing the spray height effectively extends the contact time between flue gas and cooling water

thus significantly enhances heat exchange. Reducing the temperature of the cooling water strengthens the tower's cooling capacity. Additionally

moderately reducing the inlet flue gas velocity increases its residence time in the tower

promoting more thorough heat exchange. Reducing the droplet diameter of the cooling water enhances the heat transfer efficiency by increasing the contact area.Enlarging the spray angle extends the residence time of cooling water within the tower and lengthens the contact duration with flue gas

boosting heat exchange. Increasing the cooling water flow rate expands the heat exchange area

further improving the heat transfer performance. The addition of packing material improves the heat exchange capacity of the tower while conserving cooling water. Comprehensively optimizing these parameters can substantially reduce the temperature of cooled flue gas

providing theoretical support for the design

manufacturing

and optimization of spray cooling towers in the low-temperature adsorption technology for coal-fired flue gas pollutants.

关键词

Keywords

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