초록 ▼

Disclosed is a process for controlling combustion in a fluid catalytic cracking regenerator. More specifically, afterburning which occurs during the combustion process is controlled by adjusting oxygen concentration in at least one of two combustion streams which is injected into a fluid catalytic c

Disclosed is a process for controlling combustion in a fluid catalytic cracking regenerator. More specifically, afterburning which occurs during the combustion process is controlled by adjusting oxygen concentration in at least one of two combustion streams which is injected into a fluid catalytic cracking regenerator. Preferably, the combustion streams used in the invention are asymmetrically injected into a dense phase catalyst bed within the regenerator.

대표청구항 ▼

[ What is claimed is:] [1.] A process for controlling afterburning in a fluid catalytic cracking regenerator, comprising:providing a catalyst bed in the fluid catalytic cracking regenerator;providing a regenerator vapor region above the catalyst bed;injecting a first and second stream of air into th

[ What is claimed is:] [1.] A process for controlling afterburning in a fluid catalytic cracking regenerator, comprising:providing a catalyst bed in the fluid catalytic cracking regenerator;providing a regenerator vapor region above the catalyst bed;injecting a first and second stream of air into the catalyst bed, wherein the first and second streams of air are spaced apart from one another;taking a temperature measurement in the catalyst bed;taking a temperature measurement in the regenerator vapor region;calculating the difference between the temperature of the catalyst bed and the temperature of the vapor region of the fluid catalytic cracking regenerator as .DELTA.T; andincreasing oxygen concentration in one of the first and second streams of air, when .DELTA.T has an absolute value that is greater than a predetermined value, until the absolute value of .DELTA.T is less than or equal to the predetermined value.