Reduction of sulphur content in FCC-naphtha

Regenerating zeolitic cracking catalyst

Regenerating zeolitic cracking catalyst

Regenerating zeolitic cracking catalyst

Regeneration of alkali metal sulfides from alkali metal hydrosul

Regeneration of alkali metal sulfides from alkali metal hydrosul

Removal of carbon monoxide and sulfur oxides from refinery flue

Removal of contaminating metals from FCC catalyst by NH.sub.4 ci

Removal of quinoline insolubles from coal derived fractions

Removing pollutants from flue gas in nonzeolitic catalytic crack

Resid catalytic cracking process utilizing ZSM-5 for increased g

Resid cracking process and apparatus

Resid hydroprocessing method

Resid hydroprocessing method utilizing a metal-impregnated, carb

Residua desulfurization and hydroconversion with sodamide and hy

Residua desulfurization with sodium oxide and hydrogen

Residual fuel deriving from petroleum crude by thermal shock cra

Residuum conversion process

Restricting silica content of catalyst inventory to prevent alum

Riser cracking for maximum C3 and C4 olefin yields