Evacuate the equipment and break vacuum with an inert gas such as nitrogen . Purge with an inert gas if equipment design does not permit evacuation .

对设备抽 真空，然后充入不活泼气体，如氮。如果设备不允许抽 真空，用不活泼气体来 净化。

Two kinds of process of depleted brine dechlorination were introduced which were the process of air purge and vacuum dechlorination . After comparing it showed that the process of vacuum process was better than the air purge dechlorination .

介绍了淡盐水空气吹徐脱氯工艺和真空脱氯工艺，通过对工艺的特点进行比较，认为 真空脱氯工艺优于空气 吹除脱氯工艺。