【発明の名称】重質油の接触分解方法及その装置

Japanese Patent JPS594475

B2

PURPOSE:To carry out the catalytic cracking of heavy oil to light oil and an olefin- rich fraction, in high yield, without producing tar, pitch, etc., by adding a low- activity catalyst to the heavy oil, and heating under specific conditions wherein the temperature is changed in two or more steps. CONSTITUTION:Heavy oil Fo is mixed with the catalyst from the regeneration furnace 3 in the catalyst mixer 9 at a catalyst ratio of about 0.05-0.5, and the mixture is fed to the primary cracking furnace 1 and subjected to the primary catalytic cracking at about 350-500 deg.C. The decomposition residue is deposited to the surface of the catalyst particles. After the primary catalytic cracking, the heavy oil, the gaseous decomposition products, the catalyst and the decomposition residue are fed to the top of the secondary cracking furnace 2. The catalyst from the regeneration furnace 3 is charged to the upper fluidized bed of the furnace 2, fluidized with steam St, etc. heated at about 500-800 deg.C in the heating furnace 4, and transferred to the lower fluidized bed. The secondary catalytic cracking is carried out at a catalyst ratio of about 410, at a temperature between about 400-600 deg.C and higher than the temperature of the primary catalytic cracking.

SOGAWA TOORU
MOTOGAMI AKIKYO
SATO KAORU
MORYA KENICHI

JP3091680A

January 30, 1984

March 13, 1980

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NIPPON KAIHATSU KONSARUTANTO KK

C10G51/02; B01J21/16; (IPC1-7): C10G51/02

Utaka Katsumi

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