炼油装置中H2S腐蚀产物自然氧化实验研究

采集炼油装置中的腐蚀产物样品在自然条件下进行氧化实验考察其氧化自燃性。结果表明：单质硫的存在对腐蚀产物的自燃起到了促进作用，有可能威胁到炼油企业的安全生产，硫磺回收装置应是重点安全防护对象；水的吸热降温和隔氧窒息能抑制腐蚀产物的自燃，但FeS含量高时仍能发生自燃；一般装置中，罐顶腐蚀产物比罐底腐蚀产物的氧化危险性大。

EXPERIMENTAL STUDY ON THE SPONTANEOUS OXIDATION OF CORROSION PRODUCTS IN REFINING UNITS

Corrosion products from various locations of refining units were collected and natural oxidation experiments were arranged to study the oxidation and spontaneous combustion behaviors of these corrosion products. Results show that the existence of elemental sulfur could promote the oxidation of corrosion products and even speeds up the process of spontaneous combustion, which threatens the refinery security, thus sulfur recovery units should be the main object to be concerned. Water could inhibit the spontaneous combustion of corrosion products by absorbing heat, reducing temperature and isolating oxygen in some ways. But if the content of ferrous sulfide in the corrosion products is high enough, spontaneous combustion may happen as well. Corrosion products collected from the top of refining units are more dangerous than those from the bottom since containing less water.