The basic conditions of the impurities content in civilian gas and the purifi-cation system at Sanming Steel are introduced. After the process of diesel washing of naph-thalene was upgraded to dry de-naphthalene process, naphthalene, hydrogen sulfide and other impurities content in civilian gas have been lowered and gas pipeline corrosion and control instrument blockage have been reduced.%介绍了三明钢铁公司民用煤气杂质含量及净化系统的基本情况，民用煤气柴油洗萘升级为干法脱萘后，降低了民用煤气的萘及硫化氢等杂质含量，减少了民用煤气管道腐蚀及仪控表计堵塞。
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