Dual-cycle mode catalytic cracking reaction regenerative system production technology and device

Abstract

The invention belongs to the technical field of catalytic racking reaction and provides a dual-cycle mode catalytic cracking reaction regenerative system production device which is of a design structure consisting of a riser used for carrying out two-stage catalytic cracking reaction, a two-stage precipitator, a stripper and a high-and-low parallel reaction regenerator (8); a heavy oil riser (1) is of a riser structure used for carrying out the two-stage catalytic cracking reaction, and is provided with a heavy oil riser first reactor (9) and a heavy oil riser second reactor (11); a first precipitator (6) is arranged between the heavy oil riser first reactor (9) and the heavy oil riser second reactor (11), and with the adoption of the first precipitator (6), the reaction of the heavy oil riser is divided into a catalyst first cyclic system and catalytic cracking first reaction stage, and a catalyst second cyclic system and catalytic cracking second reaction stage; and according to the invention, the problems of large light oil yield deviation, high coking rate, coking influence, catalyst regeneration and the like found in the traditional riser production process are solved.

Description

technical field [0001] The invention belongs to the technical field of catalytic cracking reaction, and mainly relates to a production process and device of a double-cycle mode catalytic cracking reaction regeneration system. Background technique [0002] At present, the main purpose of catalytic cracking technology at home and abroad since the birth of catalytic cracking is to develop a reasonable catalytic cracking reaction regeneration system, in order to further process the tail oil at atmospheric pressure and reduced pressure through catalytic cracking units, and to improve the yield and quality of light oil as much as possible. and reduce the coking rate; for this reason, some relatively mature catalytic cracking reaction regeneration system processes and reaction regeneration system devices have been developed and industrialized at home and abroad. According to the layout of the riser of the reaction regeneration system device, these processes are mainly divided into s...

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Problems solved by technology

[0009] The purpose of the present invention is to propose a production process and device of a double-cycle catalytic cracking reaction regeneration system to solve the problems of large light oil yield deviation, high coking rate, coking influence, and catalyst regeneration in the existing riser production process.

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