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从蒸馏塔顶工艺防腐蚀各项技术措施的利弊,阐述了从“一脱四注”向“一脱二注”的进展及“一脱二注”的优点。
From the advantages and disadvantages of various technical measures of anti-corrosion of distillation column top, the progress of “one off and four injection” to “one off and two injection” and the advantages of “one off and two injection” are expounded.