在矩形卧式多级串联环流反应器中，改变气速和液相表面张力，将气泡分为大气泡和小气泡两大类，进行研究。着重考察了两者对气相返混和气液界面传质的贡献，利用气相大、小气泡的分区模型，传质模型等进行了模拟计算，并提出了“有效气含率”这个新概念 In the rectangular horizontal multi-stage series loop reactor, the gas velocity and the liquid surface tension were changed, and the bubbles were divided into two categories: big bubble and small bubble. The contribution of both to the gas phase backmixing and the mass transfer at the gas-liquid interface was emphatically investigated. The partition model and the mass transfer model of large and small gas bubbles were used to simulate the calculation. The new concept of “effective gas holdup”