Closed type rough cyclone quick separation system carrying multiple-riser reactor for catalytic cracking process and catalytic cracking method thereof

Abstract

The invention relates to a closed type rough cyclone quick separation system carrying multiple-riser reactor for catalytic cracking process and a catalytic cracking method thereof. The reactor provided by the invention comprises risers, a stripping stage, a reacting-settler, rough cyclone separators disposed inside the reacting-settler and cyclone separators disposed on the top of the reacting-settler, wherein outlet ascension pipes of the rough cyclone separators are connected with inlets of the top cyclone separators through an oil gas collecting pipe. As a plurality of independent risers are arranged in the invention, feedstocks of different traits respectively undergo cracking reaction under each appropriate environment according to the requirements of device production schemes and product quality, so as to raise the yield of a target product. As a novel close type rough cyclone quick separation system is adopted on the outlets of the risers in the system, the staying time of cracked oil gas inside a settler is effectively shortened, the coke rate is reduced, and the yield of the target product is raised, therefore guaranteeing the device to operate safely for long periods of time.

Description

Technical field [0001] The invention belongs to equipment and method for catalytic cracking reaction of petroleum refining and chemical industry, more specifically, it is a novel multi-riser reactor equipment and a catalytic cracking method applied in a petroleum refining catalytic cracking device. Background technique [0002] In recent years, around the in-depth research, development and extension of catalytic cracking reaction technology, domestic and foreign research units and engineering companies have carried out a large number of research and development, and formed a series of catalytic cracking family technology, such as the development of the Petroleum Institute The MGD, MIP-CGP, DCC, ARGG, and CPP reaction processes of Luoyang Engineering Company, the flexible multi-effect catalytic cracking process (FDFCC) of Luoyang Engineering Company, the dual riser technology (TSRFCC and TSRCP-MPE) of the University of Petroleum (East China) and the University of Petroleum (Beijin...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to develop a new type of catalytic cracking multi-riser reactor with closed rough rotation and quick separation for a series of problems of current main single or double riser reactor and riser outlet quick separation system And its catalytic cracking method makes this new riser reactor more conducive to optimizing the raw materials with different properties under different riser reaction conditions, improving the yield of the target product, and increasing the yield of light oil; at the same time, it can reduce the reaction more effectively. The coking of the system ensures the long-term safe operation of the device; in addition, the system has a simple structure and large operating flexibility, which has positive significance for reducing the work intensity of the operator

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