净化气 meaning in English

clean gas
detergent gas
purified gas

This paper analyzes various technical and economic characteristics and technologic calculations for gas transmission pipeline , and takes luojiazai depurative gas transmission pipeline as an example , introduces the technical and economic comparison of desiccation projects in detail and proposes a feasible dehydration and desiccation technical project
摘要分析了各种天然气管道干燥方法的技术经济特点及工艺计算方法，以罗家寨净化气外输管道为例，介绍了其脱水干燥方案的技术经济比选，提出了切实可行的脱水干燥技术方案。