由产尘设备集气罩、抽风罩、抽风管道、除尘器、通风机、排气管道（包括烟囱）、管道附件、排尘设备以及维护监测设施等组成的系统。
介绍了一水硫酸亚铁生产中干燥工艺改进的要求，着重介绍了高温介质、物料温度、排风温度、除尘系统等对产品质量的影响。
Requirements in drying process improvement of FeSO4·H2O, effects of high temperature medium, material temperature, air exhaust temperature and dust removal system on product quality are introduced.
介绍了中药制剂厂房洁净空调系统针对不定时开启局部除尘排风造成系统压差不能保证的解决方案；集中式多个子洁净空调系统操作室对洁廊相对负压的解决方案。
In cleaning air conditioner used in Chinese drug factory, if the local dust removing air discharge is not turned on in time, the differential pressure in the system cannot be kept.
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