Research on ammonia desorption from ionic liquid intensified by falling film evaporation

WANG Junnan; DONG Haifeng; LIU Wei; MA Longwei; ZHANG Xiangping

doi:10.11949/0438-1157.20260460

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Research on ammonia desorption from ionic liquid intensified by falling film evaporation

更新时间：2026-06-02

- Research on ammonia desorption from ionic liquid intensified by falling film evaporation
- CIESC Journal (2026)
- 作者机构：
  
  1.中国石油大学（北京），碳捕集与转化利用北京市重点实验室，北京 102249
  2.中国科学院过程工程研究所，固态电池及储能过程北京市重点实验室，北京 100190
  3.惠州市绿色能源与新材料研究院，广东惠州 516003
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260460
  CLC： TQ 028
- Received：01 April 2026，
  
  Revised：2026-05-25，
  
  Accepted：28 May 2026，
- 稿件说明：
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WANG Junnan, DONG Haifeng, LIU Wei, et al. Research on ammonia desorption from ionic liquid intensified by falling film evaporation[J/OL]. CIESC Journal, 2026.
DOI：

WANG Junnan, DONG Haifeng, LIU Wei, et al. Research on ammonia desorption from ionic liquid intensified by falling film evaporation[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260460.

摘要

含氨离子液体解吸再生是离子液体法含氨尾气分离新技术的核心过程之一，其性能决定了分离过程的能耗和成本。由于离子液体较高的黏度，采用降膜蒸发有利于提高离子液体中氨的传递性能，提高气液分离效率。本工作开展了降膜蒸发强化含氨离子液体解吸再生过程的实验研究，系统评价了温度、压力、流量和富液氨含量对氨气有效解吸率、传质系数和解吸强度的影响，进一步探究

了内构件对氨气解吸的强化效果。结果表明，贫液中氨含量随解吸温度的升高和压力的降低而降低；提高富液氨含量和流量，可增强表观传质系数和氨气解吸强度；低流量下内置螺旋线可有效提高氨解吸率，在105 ℃，10 kPa和0.030 kg·m

-1

·s

-1

下，氨气解吸率从50.76%提高至69.04%，但在流量较高时（如0.108 kg·m

-1

·s

-1

），由于液膜自身波动加剧，螺旋线对液膜扰动作用减弱，使得其对氨气降膜解吸性能的影响不再显著。

Abstract

The regeneration of ammonia (NH

)-rich ionic liquids (ILs) is a critical step in the new technology of IL-based NH

separation and recovery from NH

-containing gas. The NH

desorption performance directly determines the energy consumption and cost of the overall separation process. Due to the high viscosity of ILs

the use of the falling film evaporator is beneficial to enhancing the mass transfer performance of NH

in ILs and improving separation efficiency. In this work

an experimental study was conducted on the process of NH

关键词

Keywords

references

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