Sulphur reduction of fluid catalytic cracking (FCC) naphtha by an in situ Zn/Mg(Al)O FCC additive Original Research Article

A number of solutions for the reduction of sulphur in fluid catalytic cracking (FCC) naphtha have been suggested. One possible solution would be to use an FCC catalyst or an FCC catalyst additive which could reduce the sulphur content in the FCC naphtha in situ in the cracker itself. Through this work, it has been shown that an FCC-additive made by impregnating zinc on a hydrotalcite-like material is able to give a significant reduction of naphtha sulphur in MAT experiments, while the hydrotalcite material itself gives only a minor reduction of naphtha sulphur. It has also been shown that the additive has no effect on catalyst activity, but gives an unwanted increase in the production of coke.