Simulation and experimental analysis of spray flash regeneration characteristics of CaCl<sub>2</sub> solution

ZHANG Hao; SHEN Kai; LAI Yanhua; CUI Lin; DONG Yong

doi:10.11949/j.issn.0438-1157.20181274

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Simulation and experimental analysis of spray flash regeneration characteristics of CaCl₂ solution

Energy and environmental engineering | 更新时间：2026-07-24

- Simulation and experimental analysis of spray flash regeneration characteristics of CaCl₂ solution
- CIESC Journal Vol. 70, Issue 6, Pages: 2269-2278(2019)
- 作者机构：
  
  1.山东大学能源与动力工程学院，山东济南 250061
  2.西北电力设计院，陕西西安 710075
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181274
  CLC： TK 124
- Received：31 October 2018，
  
  Revised：2019-03-25，
  
  Online First：15 June 2020，
  
  Published：05 June 2019
- 稿件说明：
移动端阅览
张昊, 申凯, 赖艳华, 崔琳, 董勇. 氯化钙溶液喷雾闪蒸再生特性模拟及试验分析[J]. 化工学报, 2019, 70(6): 2269-2278

ZHANG Hao, SHEN Kai, LAI Yanhua, CUI Lin, DONG Yong. Simulation and experimental analysis of spray flash regeneration characteristics of CaCl₂ solution[J]. CIESC Journal, 2019, 70(6): 2269-2278 DOI: 10.11949/j.issn.0438-1157.20181274.
张昊, 申凯, 赖艳华, 崔琳, 董勇. 氯化钙溶液喷雾闪蒸再生特性模拟及试验分析[J]. 化工学报, 2019, 70(6): 2269-2278 DOI： 10.11949/j.issn.0438-1157.20181274.

ZHANG Hao, SHEN Kai, LAI Yanhua, CUI Lin, DONG Yong. Simulation and experimental analysis of spray flash regeneration characteristics of CaCl₂ solution[J]. CIESC Journal, 2019, 70(6): 2269-2278 DOI: 10.11949/j.issn.0438-1157.20181274. DOI：

摘要

燃煤电厂排放的烟气中含有大量水蒸气，氯化钙溶液循环除湿技术具有较好的除湿潜力。为了研究吸湿后的氯化钙溶液的再生性能，使用Matlab软件对液滴闪蒸过程进行了数值模拟，并搭建了氯化钙溶液喷雾闪蒸试验台。考察了闪蒸压力，溶液初始温度、浓度、溶液流量等因素对氯化钙溶液再生量的影响。试验结果表明了数学模型的准确性；溶液表面蒸气压和再生压力的差值以及溶液过热度是影响再生量的关键因素；闪蒸出口水蒸气经冷凝后Cl

–

含量不足0.2 mg/L。浓度为35%的溶液在再生温度为60℃、再生压力为10 kPa、流量为0.2 m

/h的情况下，可以实现5 kg/h以上的水分回收量。

Abstract

The f

lue gas emitted by coal-fired power plants contains a large amount of water vapor

and the calcium chloride solution circulating dehumidification technology has a good dehumidification potential. To study the regeneration performance of the CaCl

solution after dehumidification

the droplet flashing process was numerically simulated by using Matlab software

and a test bench on regeneration of CaCl

solution by spray flash evaporation was set up. The effects of flash pressure

initial solution temperature

concentration

and solution flow rate on the regeneration of CaCl

solution were investigated. The results showed the accuracy of the mathematical model. The difference between vapor pressure on the solution surface and the regeneration pressure and the superheat of the solution are the key factors affecting the regeneration efficiency. The concentration of Cl

in the condensed water after flashing is less than 0.2 mg/L. CaCl

solution with a concentration of 35%

a regeneration temperature of 60℃

a regeneration pressure of 10 kPa

and a flow rate of 0.2 m

/h will has a rate of more than 5 kg/h water recovery quality.

关键词

Keywords

references

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⁰

Simulation and experimental analysis of spray flash regeneration characteristics of CaCl2 solution

DOI：10.11949/j.issn.0438-1157.20181274

摘要

Abstract

关键词

Keywords

references

Simulation and experimental analysis of spray flash regeneration characteristics of CaCl₂ solution