文献类型：期刊文献

英文题名：Modeling Wet Air Oxidation of Sodium Acetate in a Bubble Column

作者：Bi, Jinghao[1];Qin, Weijun[1];Xie, Dongjie[1];Xie, Fan[1];Xu, Xiao[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：11

期号：10

外文期刊名：PROCESSES

收录：;EI(收录号：20241515857914);WOS:【SCI-EXPANDED(收录号:WOS:001095079100001)】；

基金：This project was sponsored by the "Chenguang Program" supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission (20CG39).

语种：英文

外文关键词：wet air oxidation; bubble column; mass transfer; degradation efficiency; sodium acetate

摘要：Scale-up bubble columns for wet air oxidation (WAO) represent a novel solution to the growing problem of sodium acetate-containing waste discharge. This study used an axial dispersion model to simulate a reactor at a high temperature of 320 degrees C. By minimizing the structure size and gas fed into the system, the estimated optimal reactor dimensions were obtained. At the optimized reactor diameter, total height, initial oxygen partial pressure, and superficial gas velocity of 1 m, 7 m, 40 bar, and 0.07 m/s, respectively, a degradation efficiency of over 90% was obtained, at which the residual concentration of sodium acetate degraded from 700 mol/m3 to 70 mol/m3. The axial distributions of the dissolved oxygen, sodium acetate, and oxygen concentrations in the gas were nearly uniform. The bubble column reactor exhibited an intermediate state between well-mixed flow and plug flow for both liquid and gas.