雾化反应器制备氢氧化镁传质性能研究

于红蕾; 梁慧; 房信; 王嘉辉; 范丽华

doi:10.11949/0438-1157.20260207

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雾化反应器制备氢氧化镁传质性能研究

催化、动力学与反应器 | 更新时间：2026-06-09

- 雾化反应器制备氢氧化镁传质性能研究
- Mass transfer characteristics of an atomizing reactor in the preparation of magnesium hydroxide
- 化工学报 2026年
- 作者机构：
  
  沈阳工业大学化工装备学院，辽宁辽阳 111000
- 作者简介：
  
  于红蕾(1994—)，女，博士，讲师， hlyu@sut.edu.cn
- 基金信息：
  
  辽宁省博士科研启动基金项目(2025-BS-0315)
- DOI：10.11949/0438-1157.20260207
  中图分类号： TQ132.2
- 收稿：2026-02-10，
  
  修回：2026-06-04，
  
  录用：2026-06-09，
- 稿件说明：
移动端阅览
于红蕾, 梁慧, 房信, 等. 雾化反应器制备氢氧化镁传质性能研究[J/OL]. 化工学报, 2026.

YU Honglei, LIANG Hui, FANG Xin, et al. Mass transfer characteristics of an atomizing reactor in the preparation of magnesium hydroxide[J/OL]. CIESC Journal, 2026.
于红蕾, 梁慧, 房信, 等. 雾化反应器制备氢氧化镁传质性能研究[J/OL]. 化工学报, 2026. DOI： 10.11949/0438-1157.20260207.

YU Honglei, LIANG Hui, FANG Xin, et al. Mass transfer characteristics of an atomizing reactor in the preparation of magnesium hydroxide[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260207.

摘要

通过理论模型与实验验证相结合，探讨了雾化反应器制备氢氧化镁的传质性能。基于表面更新理论建立了传质模型，预测精度较好（误差

10%）。实验结果表明，液气流量比和溶液浓度显著影响传质效率，最佳条件为液体流量60 L/h，氨气流量300 L/h（液气流量比2×10⁻³）、氯化镁溶液浓度25 wt%、温度308 K，此时传质系数（

）达到最大值2.53 kmol·kPa

-1

·m

-3

·s

-1

。雾化反应器在30 min内转化率达77.61%，较鼓泡反应器提升8.2%。反应时间缩短40 min，产物氢氧化镁粒径更小（D

降低74.12%）、分布更窄，晶体结构稳定。延长雾化时间至90分钟可获得规则六角片状氢氧化镁，提高分散性。本研究可为相关工艺优化提供基础理论与数据参考。

Abstract

The mass transfer performance of an atomizing reactor for magnesium hydroxide preparation was investigated through a combination of theoretical modeling and experimental validation. A mass transfer model based on surface renewal theory was developed and exhibited good predictive capability

with an error below 10%. The results demonstrated that the liquid–gas flow ratio and magnesium chloride solution concentration significantly influenced the mass transfer efficiency. Optimal conditions were obtained at a liquid flow rate of 60 L h⁻¹

an ammonia flow rate of 300 L h⁻¹ (liquid–gas flow ratio of 2 × 10⁻³)

a MgCl₂ solution concentration of 25 wt%

and a temperature of 308 K. Under these conditions

the volumetric mass

transfer coefficient (

) reached a maximum value of 2.53 kmol·kPa⁻¹·m⁻³·s⁻¹. The atomizing reactor achieved a conversion of 77.61% within 30 min

representing an 8.2% increase compared with a conventional bubble reactor

while reducing the reaction time by 40 min. Moreover

the obtained Mg(OH)₂ exhibited a significantly smaller particle size (D

reduced by 74.12%)

narrower size distribution

and stable crystal structure. Extending the atomization time to 90 min resulted in well-defined hexagonal plate-like Mg(OH)₂ with improved dispersion. This research can provide fundamental theories and data references for the optimization of related processes.

关键词

Keywords

references

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