An integrated hydrogenation process and hydrogenation system for crude oil-to-chemicals

By efficiently coupling the separation unit, ebullating bed and fixed bed hydrogenation reaction zones and optimizing the reaction conditions and catalysts, the problem of low heavy crude oil conversion efficiency was solved, and the yield of chemical raw materials was increased and energy consumption was reduced.

CN118725901BActive Publication Date: 2025-09-05CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202310316410.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-29
Publication Date
2025-09-05
Estimated Expiration
2043-03-29

AI Technical Summary

Technical Problem

In existing crude oil-to-chemicals technologies, the efficiency of converting heavy crude oil into light chemical raw materials is low and the device coupling is poor, resulting in low chemical raw material yields and high energy consumption and investment.

Method used

The separation unit, the ebullating bed heavy oil hydrogenation unit and the fixed bed hydrogenation unit are efficiently coupled. Through the series connection of multiple reaction zones and the application of gas-liquid separators, the reaction conditions and catalyst selection are optimized to achieve efficient conversion of crude oil into light naphtha and heavy naphtha.

Benefits of technology

The yield of chemical raw materials is increased, the energy consumption and investment of the device are reduced, the properties of hydrogenated heavy oil are improved, and the overall yield of chemicals is increased.

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Abstract

The present invention discloses an integrated hydrogenation process and system for producing crude oil-based chemicals. The system comprises a first fractionation unit, a first ebullated-bed reaction zone, a first gas-liquid separator, a second ebullated-bed reaction zone, a second gas-liquid separator, a first fixed-bed reaction zone, a second fixed-bed reaction zone, a second fractionation unit, a third gas-liquid separation unit, a fourth gas-liquid separator, and a fourth fractionation unit. Also provided is an integrated hydrogenation process for producing crude oil-based chemicals, coupling the separation unit, ebullated-bed heavy oil hydrogenation, and fixed-bed hydrogenation to achieve efficient conversion of crude oil into light naphtha and heavy naphtha, chemical raw materials. The process of the present invention efficiently and organically couples the reaction units, achieving a crude oil-to-chemical conversion rate exceeding 85%. Furthermore, through optimized device coupling, device investment and energy consumption can be significantly reduced.
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