Liquid phase hydrogenation system and method

A liquid-phase hydrogenation and hydrogenation reaction technology, which is applied in the fields of hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of long gas-liquid movement path, inability to achieve hydrogenation effect, and difficult operation.
CN109679690AActive Publication Date: 2019-04-26CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2019-04-26

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Abstract

The invention discloses a liquid phase hydrogenation system and method. The liquid phase hydrogenation system comprises a hydrogen dissolving area and a hydrogenation reaction area; the hydrogen dissolving area is internally provided with a plurality of hydrogen dissolving devices which comprise hydrogen dissolving device shells; a plurality of hydrogen dissolving assemblies which are connected inparallel are included in the hydrogen dissolving device shells; and the hydrogenation reaction area comprises a fixed bed reactor and one or more up-flow-type tubular reactors, wherein the fixed bedreactor and the one or more up-flow-type tubular reactors are connected in series. Fresh raw oil and hydrogen form a 'gas-in-oil' type gas-liquid mixed fluid with the stable state in the hydrogen dissolving area firstly and then enter the hydrogenation reaction area to generate a liquid phase hydrogenation reaction; and according to the method, the 'gas-in-oil' type gas-liquid mixed fluid formed in the hydrogen dissolving area is adopted as a fed material of the liquid phase hydrogenation reaction, the supplementary hydrogen-to-oil ratio in the hydrogenation reaction process can be greatly decreased, the hydrogenation reaction speed is increased, the hydrogenation reaction efficiency is improved, the hydrogen utilization rate is increased, hydrogen consumption and energy consumption are lowered, and deep hydrogenation is achieved.
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Description

technical field

[0001] The invention belongs to the field of petrochemical industry, and specifically relates to a liquid-phase hydrogenation system and a liquid-phase hydrogenation method. Background technique

[0002] Liquid phase hydrogenation technology is a new type of hydrogenation technology. Compared with the conventional trickle bed gas\liquid\solid three-phase hydrogenation process, it has the advantages of simple process flow, saving investment, reducing production costs, and high reaction efficiency. In the conventional trickle bed hydrogenation reaction process, hydrogen is mainly used for mass transfer, that is, the speed at which hydrogen diffuses from the gas phase and dissolves into oil is the rate-controlling step of the entire hydrogenation reaction. The liquid-phase hydrogenation process eliminates the influence of hydrogen diffusion and mass transfer, so that the hydrogenation reaction is carried out in the kinetic control zone, that is, the hydrogen is ...

Claims

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