purge gas meaning in English

冲洗
吹扫气体
吹扫用的气体
吹扫用气体
净化气体

Some changes are needed in the configuration of the plant to reflect the changes that have occurred on the site , primarily that both the hydrogen recovery plant that was fed with purge gas and supplied instrument air and the site auxiliary boilers that provide low pressure steam have been dismantled
装置布局发生了一些变化，主要的两项就是拆除了氢回收装置和辅助锅炉，氢回收装置消耗吹扫气和仪表空气，辅助锅炉曾经用来提供低压蒸汽。