A system and method for coupling co2 conversion to improve high value product yield from catalytic apparatuses

By introducing a CO2 reforming unit into the catalytic cracking unit, CO and H2 are generated through dry reforming reaction, which solves the problems of catalyst coking and greenhouse gas emissions, improves the conversion rate of heavy oil and the yield of high-value products, and forms a highly efficient catalyst closed-loop system.

CN122399684APending Publication Date: 2026-07-17CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202510069512.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When processing low-quality heavy oil, catalytic cracking units produce high yields of dry gas and coke, resulting in large greenhouse gas emissions. Existing technologies struggle to achieve efficient conversion of CO2 and CH4 and enhance the production of high-value products.

Method used

By introducing a CO2 reforming unit into the catalytic cracking unit, the reformed dry gas and regenerated flue gas are used to carry out a dry reforming reaction with the regenerated catalyst to generate CO and H2. At the same time, the catalyst is reduced and regenerated, forming a closed-loop system, reducing the problem of carbon deposition, and improving the conversion rate of heavy oil and the yield of high-value products.

Benefits of technology

It enables continuous reaction and regeneration of catalysts, reduces CO2 and CH4 emissions, improves heavy oil conversion rate and yield of high-value products such as gasoline and propylene, reduces coke yield, and the method is simple and easy to implement.

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Abstract

本发明提供一种耦合CO2转化提高催化装置高价值产品产率的系统和方法，系统包括重油反应单元、再生单元和CO2重整单元；重油反应单元设有重油反应器，重油反应器底部设有预提升段，预提升段设有再生催化剂入口和还原催化剂入口，预提升段上方连接有重油管线；再生单元设有再生器，重油反应单元中沉降器的待生催化剂出口与再生器的催化剂入口连通，再生器设有富氧再生风入口；CO2重整单元设有下行反应器。本发明中同一催化剂体系即可兼顾重油转化、CO2转化、催化剂还原，使催化剂可以连续反应和再生，既解决重整催化剂积炭问题，又实现装置整体的热量平衡和催化剂还原。
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Citation Information

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