| Popis: |
A promising method for intensifying catalytic cracking, one that does not require any significant material costs, is the use of optimal quantities of various highly aromatic additives as activators in the feedstock. The additive may be a solvent extract from the No. III lube cut, tar from distillate cracking, pyrolysis tar, or heavy catalytic gasoil (HCGO) [i, 2]. When this approach is applied to fluid catalytic crackers, it has been observed that coke formatlon on the catalyst is reduced by 2-4% by weight, owing to the increase in aggregative stability (resistance to aggregation) of the gas/liquid petroleum emulsion as a result of incorporation of the surface-active components of the additive into the composition of the solvate shells of the gas bubbles. |
