Experimental results indicate that the extents of axial gas backmixing are related the gas velocity.
实验结果表明湍动床存在着明显的轴向返混，轴向扩散系数与气速有关。
Backmixing of liquid and gas and association effects between acetic acid molecules were considered and the accuracy of the model for dynamic process was greatly improved.
该模型考虑了气液相返混及醋酸分子间的缔合效应，提高了模型对非稳态过程的模拟精度。
Owing to the short residence time, more uniform gas-solid flow and reduced backmixing of downer reactor, it can obtain more object products and the dry gas yield can be inhibited.
由于下行床具有短停留时间、气固流动更均匀和返混小的优点，能获得更高的产品收率，使干气收率受到抑制。
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