GB510110A - Improvements in and relating to catalysts for use in cracking hydrocarbons - Google Patents

Abstract

510,110. Catalysts for cracking oils. STANDARD OIL DEVELOPMENT CO. June 29, 1938, No. 19332. Convention date, Oct. 22, 1937. [Classes 1 (i) and 32] Catalysts, for the conversion of high-boiling hydrocarbons into lower boiling hydrocarbons suitable as motor fuels of high octane number, such as Fuller's earth, bentonites, zeolites &c., are prepared by mixing the finely divided catalytic material with a small amount of a finely divided 'solid polycyclic hydrocarbon, e.g., anthracene or naphthalene, moistening the mass with a small amount of water, moulding into small compact masses, e.g., pills, pellets, tablets &c., and then heating, prior to their use as catalysts, to a temperature sufficient to boil off the hydrocarbon without leaving any decomposition products on the catalyst. The catalyst and hydrocarbon may be mixed in the proportion of 1-20 parts hydrocarbon to 99-90 parts of clay, increased pressure in the moulding operation requiring a greater proportion of hydrocarbon. Preferably, the mixture is formed into 10-12 mm. pills which are reground to 10 mesh and reformed into 4 mm. pills. The conversion process is carried out at about 850‹F and the catalyst is regenerated by oxidation ; the catalyst prepared as above requires a shorter time for regeneration. Examples describe the conversion of a West Texas gas oil using catalysts prepared as above, showing the yield in successive cycles, and also the conversion and regeneration times. Comparison is made between such catalysts and compressed catalysts not made with such hydrocarbons.