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Hydrocarbons hydrocracking method

A hydrocracking and hydrocarbon technology, applied in the field of hydrocarbon hydrocracking, can solve the problems of hydrocracking catalyst deactivation, etc., and achieve the effects of promoting deep cracking, reducing load and reducing operating costs

Active Publication Date: 2008-02-27
SINOPEC LUOYANG PETROCHEM ENG CORP
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Problems solved by technology

[0006] The above-mentioned "trans" hydrocracking processes all have the disadvantage that the fresh feed is directly subjected to the hydrocracking reaction without refining process, which makes the hydrocracking catalyst susceptible to deactivation due to nitrogen poisoning in the raw material, so the hydrogenation Cracking catalysts require special high nitrogen resistance catalysts

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Embodiment Construction

[0030] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only drawn to illustrate the basic content of the present invention, and do not limit the scope of the present invention.

[0031] As shown in Figure 1, raw oil 13 enters the device, and after exchanging heat with the first reactor effluent 19, it is mixed with the following mixed hydrogen 15 and the second reactor effluent 18 to enter the first reactor 1, and the first reaction The reactor 1 is usually operated under the conditions of a pressure of 14.0-18.0 MPa and a temperature of 350-450°C. The first reactor 1 is filled with a hydrofinishing catalyst or the upper part is filled with a hydrofinishing catalyst and the lower part is filled with a hydrocracking catalyst. After heat exchange with the effluent 19 of the first reactor, the circulating oil 30 is mixed with the following mixed hydrogen 15 and enters th...

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Abstract

The invention discloses a hydrogenation cracking method of hydrocarbon, which consists of first reactor and second reactor, wherein the first reactor is refined hydrogen reactor or hydrogenation refining and hydrogenation cracking reactor; the second reactor is hydrogenation cracking reactor; the crude oil and flow material from second reactor enters in the first reactor with hydrogen to do hydrogenation refining reaction or hydrogenation refining and hydrogenation cracking reaction; the effluent from the first reactor is separated to obtain circulated hydrogen, object product and non-conversing oil; all or partial non-conversing oil can be circulating oil in the second reactor with hydrogen, which proceeds hydrogenation cracking reaction; the effluent from the second reactor enters in the first reactor; the composite hydrogen can be new hydrogen to supplement, which mixes gas with circulating hydrogen.

Description

technical field [0001] The invention belongs to the field of petroleum refining and relates to a hydrocarbon hydrocracking method. Background technique [0002] Hydrocracking unit has increasingly become a key means to balance refinery production and market demand due to its wide range of raw oil processing, flexible product structure, good product quality, and high liquid yield. Currently, hydrocracking units mostly use fixed-bed reactors to process light and heavy gas oils. Generally, it can be divided into single-stage hydrocracking and two-stage hydrocracking according to its technological process. In the high-pressure hydrocracking units that have been put into operation in my country, the main technological process mostly adopts a single-stage one-pass process and a partial circulation process of unconverted oil. or a full cycle process. The single-stage circulation process means that when there is no external demand for unconverted oil, all unconverted oil is boosted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/12
Inventor 李立权师敬伟
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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