Gas-solid separation equipment

There are four broad groups of gas-solid separation equipment ... 

Entrainment of particles, causing loss of catalyst and/or solid product, contributing to air pollution and requiring gas-solid separation equipment... 

Catalyst particles tend to be entrained from the bed, requiring gas-solid separation equipment (e.g., cyclones, filters) and leading to catalyst losses. In particular, fines tend to be lost, since these are most readily entrained or elutriated. The loss of fines can cause direct economic loss, pollution, and changes in reactor performance. 

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