硫酸装置工艺防腐蚀研究  

Research on Corrosion Prevention of Sulfuric Acid Plant Process

作　　者：李宁 杨湘军 宁科 LI-Ning;YANG Xiang-Jun;NING-Ke(Dongying United Petroleum and Chemical Co.,Ltd.Dongying 257000,China;Dongying Gangkun Energy Technology Co.,Ltd.Dongying 257000,China;Shandong Nahai Water Development Co.,Ltd.Dongying 257000,China)

机构地区：[1]东营威联化学有限公司,山东东营257000 [2]东营港坤能源科技有限公司,山东东营257000 [3]山东纳海水务发展有限责任公司,山东东营257000

出　　处：《全面腐蚀控制》2024年第5期153-158,共6页Total Corrosion Control

摘　　要：近年来,随着国家环保法律法规日趋严格,二氧化硫烟气被国家列为重点减排对象,二氧化硫的减排与回收已成为环保领域急需突破的重大课题。GB31570-2105《石油炼制工业污染物排放标准》规定酸性气回收装置排放烟气中二氧化硫质量浓度一般地区不大400mg/m^(3)特殊地区不大于100mg/m^(3),部分省市要求排放烟气中二氧化硫质量浓度不得高于50mg/m^(3),甚至更低[1-4]。目前,以硫酸装置作为回收硫在石油化工行业中得到大量使用,因此对于其使用中的防腐研究也成为一项重点工作。考虑硫酸装置腐蚀原因复杂,风险隐患较大,本文根据某炼厂硫酸装置腐蚀情况分析其腐蚀介质的分布、机理分析等以及预防提出建议。In recent years,with the increasingly strict national environmental protection laws and regulations,sulfur dioxide flue gas has been listed as a key emission reduction target by the country.The emission reduction and recovery of sulfur dioxide has become a major issue that urgently needs to be broken through in the field of environmental protection.GB31570-2105 Emission Standards for Pollutants in the Petroleum Refining Industry stipulates that the mass concentration of sulfur dioxide in the flue gas discharged from acidic gas recovery devices is generally not greater than 400mg/m^(3) in special areas and not greater than 100mg/m^(3).Some provinces and cities require that the mass concentration of sulfur dioxide in the flue gas discharged should not exceed 50mg/m^(3) or even lower[1-4].At present,sulfuric acid plants are widely used in the petrochemical industry for sulfur recovery,so the research on anti-corrosion during their use has become a key task.Considering the complex causes of corrosion in sulfuric acid plants and the high risks and hidden dangers,this article analyzes the distribution and mechanism of corrosion media in a certain refinery’s sulfuric acid plant based on the corrosion situation,and proposes suggestions for prevention.

关 键 词：二氧化硫 硫酸装置 防腐蚀研究 

分 类 号：TE-9[石油与天然气工程]