化工学报2019，Vol.70Issue(10)：3914-3923,10.DOI:10.11949/0438-1157.20190636
上流式反应器气液相间传质特性的实验研究
Experimental study of gas-liquid mass transfer characteristics in up-flow reactor
摘要
Abstract
The upflow reactor is a key pre-reactor of fixed bed residual hydrocracking process, which improves the applicability to residual materials and prolongs the run time of the device. Experimental bench of upflow reactor for the mass transfer process between gas and liquid was built. The industrial catalysts particles with the shape of pentagonal cylinder are packed in the reactor, and air simulates hydrogen and aqueous solution for oil. Based on physical absorption of oxygen into water and chemical absorption into sodium sulfite, the gas-liquid mass transfer characteristics in the upflow reactors are explored under the condition of high gas liquid flux ratio. The influences of superficial gas velocity, superficial liquid velocity, packing particle dimension, internal component, catalyst packing gradation and the ratio of height to diameter on volumetric liquid-side mass transfer coefficient and gas-liquid interfacial area were investigated. The experimental data show that the volumetric liquid-side mass transfer coefficient increases with the increase of gas and liquid superficial velocity. The smaller the particle diameter, the greater the volumetric liquid-side mass transfer coefficient is. Installing proper internal components in the bed layer can enhance gas-liquid mass transfer and the larger aspect ratio of the reactor is beneficial to the gas-liquid mass transfer process. Based on the experimental data, the empirical correlation formula suitable for the volumetric liquid-side mass transfer coefficient and gas-liquid interfacial area of upflow reactor are established, and the maximum fitting errors are 12% and 24% respectively. That the empirical correlations of gas-liquid mass transfer may well describe the characteristics of gas-liquid mass transfer in upflow reactor.关键词
反应器/传质/渣油加氢/内构件/颗粒级配/反应工程Key words
reactor/mass transfer/residual oil hydrogenation/internals/particles gradation/reaction engineering分类
化学化工引用本文复制引用
曹俊雅,张绅,张涛,雍玉梅,杨超..上流式反应器气液相间传质特性的实验研究[J].化工学报,2019,70(10):3914-3923,10.基金项目
国家重点研发计划重点专项(2016YFB0301701) （2016YFB0301701）
国家自然科学基金项目(21776283,21427814) （21776283,21427814）
中国科学院前沿科学重点研究项目(QYZDJ-SSW-JSC030) （QYZDJ-SSW-JSC030）
