The composition of main air blower set of catalytic cracking unit. The different types of blower and its different inlet pipe system arrangement were recommended.

介绍了催化裂化装置中主风机机组的组成，以及不同型式的鼓风机其入口管系的不同配置。

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The utility model is also provided with a set of winnowing device, and grains are winnowed and collected by the negative pressure of an air intake of a blower.

它还有一套风运装置，由风机的进风口负压实现粮食的风运收集。

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