Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions

陈明光; 孙建中; 唐福瑞; 顾培韵; 潘祖仁

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Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions

更新时间：2025-12-16

- Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions
- CIESC Journal Issue 6, (1988)
- 作者机构：
  
  浙江大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系 ,杭州,杭州,杭州,杭州,杭州
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 1988，
  
  Published：25 December 1988
- 稿件说明：
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陈明光, 孙建中, 唐福瑞, et al. Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions[J]. CIESC Journal, 1988, (6).
DOI：

陈明光, 孙建中, 唐福瑞, et al. Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions[J]. CIESC Journal, 1988, (6). DOI：

摘要

本文选用O_2-KCl水溶液体系

采用动态物理吸收法对卧式搅拌釜加压条件下的气液传质容易系数进行了测定.釜液中的氧浓度变化由氧电极跟踪测定.通过改变气相压力、搅拌转速和液含率

分别考察了这些因素对卧式搅拌釜气液传质特性的影响.结果表明

高压下的液相传质容量系数有所提高.与常压相比

在液含率为0.5、桨径比为0.8、采用六叶平直透平桨叶搅拌的条件下

若压力升到36atm(1atm=101.325kPa)

k_La将增加20%左右.

Abstract

Volumetric mass transfer coefficient kL a was determined by the unsteady state oxygen absorption method for a O2-KCl solution system. Changes of the dissolved oxygen concentration in the bulk liquor with time was monitored through a dissolved oxygen probe. Various effects

such as gas pressure

impeller rotational speed and liquid ratio

on the mass transfer coefficient kL a were investigated. It was found that at high pressures

with the increase of gas phase density

gases tended to form small bubbles in the liquid phase

and as a result a higher rnsss transfer coefficient in the agitated vessel was visualized. When the liquid ratio was 0.5

and the employed tunbins impeller diameter ratio 0.8

about 20% increase

in the value of kLa was obtained when operating under a pressure of 36 atm. instead of atmospheric.

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