Antioxidants in Naptha

[mm1975]

Dear sir,

Can any one please give me the guidance on where can i get the information about antioxidant Usage in naptha Processing
what are the types of antioxidants available, what should be the dosage rate to prevent Gum Formation e.t.c

Thanks & Regards

 

[25362]

Typical antioxidants are alkyl phenols and phenylene diamines. These not only retard the formation of gums and improve storage stability but also diminish the formation of peroxides that may attack rubber hoses used in some aircraft. The dosage is around 20 mg/L.

Besides, minor quantities of metal ions, such as 0.01 ppm copper, picked up by refinery streams may actually catalyse the formation of gums. Metal deactivators are added to chelate these metal traces acting in synergy with the anti-oxidants. Example: N,N-disalicylidene 1,2 propanediamine.

A brief Google search will give you plenty of information on the types in use and the suppliers in the market.