A coupling reaction device for heavy oil lightening

Abstract

The invention provides a coupling reaction device for heavy oil lightening, which includes a reactor and a synthesis gas-gas-solid separator; the inside of the reactor includes a cracking section and a gasification section that are connected to each other through a material pipeline; the input end of the material pipeline is connected to the The bottom of the gasification section is connected, and the output end of the material pipeline is connected with the top of the cracking section; the cracking section is equipped with a heavy oil raw material inlet, a solid particle outlet, a synthesis gas inlet, and an oil and gas outlet; the gasification section is equipped with a gasification agent inlet and a solid particle inlet And the synthesis gas outlet; the synthesis gas outlet is connected with the inlet of the synthesis gas-gas-solid separator, and the gas phase outlet of the synthesis gas-gas-solid separator is connected with the synthesis gas inlet through the external synthesis gas delivery pipeline; the solid particle outlet is through the external riser It communicates with the solid particle inlet. The device can realize the synergy between the two reaction processes of heavy oil cracking and gasification, so as to obtain high-yield and high-quality oil gas and synthesis gas, and reduce the energy consumption of cracking reaction.

Description

technical field [0001] The invention relates to a heavy oil lightening coupling reaction device, which belongs to the technical field of petroleum processing. Background technique [0002] With the heavy and inferior quality of crude oil, the output of inferior heavy oil (heavy oil, super heavy oil, oil sand bitumen, vacuum residue, oil slurry, deoiled bitumen, etc.) has increased sharply. Inferior heavy oil usually has the characteristics of low H / C ratio, high content of sulfur, nitrogen and heavy metals, and large carbon residue value. The internal enrichment of carbon residue and asphaltene components lead to a serious tendency of coking in heavy oil during processing. Due to problems such as catalyst deactivation, high hydrogen consumption, and long-term operation, it is difficult to directly use catalytic cracking or catalytic hydrogenation to meet the direct processing needs of a large amount of inferior heavy oil. Compared with the one-step heavy oil processing tech...

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Problems solved by technology

[0006] The flexible coking process uses coke powder as the heat carrier of the heavy oil cracking reaction. The coke produced is attached to the surface of the coke powder and needs to be transported to the gasification / combustion reactor for removal. The recirculation and return of coke powder between multiple reactors not only makes it difficult to recycle coke powder between multiple reactors, but also makes it difficult to realize direct logistics or heat exchange between coke gasification and heavy oil coking reaction, which increases the energy consumption of cracking reaction

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