And the proposals are suggested, that is liquid-ring compressor should be selected for the devices which caustic soda production capacity is less than 60 kt/ a and the centrifugal compressor should be selected for those of more than 100 kt/ a. 最后提出建议:在6万ta以下规模的烧碱装置中,应选用液环式压缩机;10万ta以上规模选用离心式压缩机。