Development of Compound Iron Sulfide Cleaning Agent

A kind of compound iron sulfide cleaning agent was developed successfully.The cleaning agent usually contained surfactant,tetrakis(hydroxymethyl)phosphonium sulfate,ammonium chloride,ethylene diamine tetraacetic acid and corrosion inhibitor.The removal efficiency of iron sulfide and hydrogen sulfide,the emulsifying power and dispersancy of cleaning agent,and carbon steel corrosion rate were tested.The results showed that the cleaning agent could remove iron sulfide in oil tank and prevent auto-ignition effectively.The cleaning agent is also environment-friendly,which is worth of promotion.