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["Problemas com o material em res deidas de coking",,"Recentemente trabalhando em um projeto de tratamentoamento de em as de coking,,,因为焦化废水中含有Cl等腐蚀性离子,因此在材质选择上比较慎重。但有一个废水预热器,冷热侧的材质一般都选择碳钢比不锈钢更适合吗?请大家多指教。",,"碳钢不如不锈钢耐Cl腐蚀,如果仅仅是氯盐的话应该寿命也不会太长,最好最好用钛。".,"理论上是这样,据我了解现场一般都用碳钢,所以才不解。".,"看成分和浓度,另外有些公司做的设计选材不一定合适,特别是环保公司,我有个废盐水处理项目就被坑了,所以设备都换了".,"钛材太贵,不如试试我们的无机防腐涂料71".,"估计是节约成本的因素,一般这种预热器都是管程34或316".,"主要是因为特种材料太贵。在这种情况下容易发生孔蚀漏,而且维修又麻烦,报废成本太高。做碳钢的顶个报废。".

2020-04-30View Original

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最近遇到一个焦化废水的处理的项目,焦化废水中因含Cl等腐蚀性离子,因此材质选型比较慎重。但有一废水预热器,冷热侧的材质一般都选择CS,氯离子腐蚀碳钢比不锈钢适合么?请大家多指教。
Reply #22020-04-30
碳钢不比不锈钢耐Cl腐蚀,仅仅是CL盐的话应该寿命也不会太长,最好用钛。
Reply #32020-04-30
理论上如此,据我了解现场一般CS多,所以才不解。
Reply #42020-04-30
看成分和浓度,另外有些公司做的设计选材不一定合适,特别是小环保公司,我有个废盐水处理项目就被坑了,主要设备都换了
Reply #52020-05-06
钛材太贵,不如试试我们的711无机防腐涂料
Reply #62020-05-06
估计是节约成本的也因素,一般这种预热器都是管程2205,壳程用304或者316
Reply #72020-05-29
主要是特材太贵。304这场合容易孔蚀漏,1-2年修又麻烦,报废成本太高。做碳钢的顶个1-2年,直接报废。

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