Integrated hydrocracking method

A hydrocracking and hydrogen technology, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, can solve the problems of complicated operation, increased primary investment, large investment, etc., and achieves simplified process flow, low operating cost, and equipment The effect of low investment

CN102329640BActive Publication Date: 2014-08-20CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-08-20

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Abstract

The invention discloses an integrated hydrocracking method. The method includes the following steps: under hydrocracking conditions, high-sulfur raw oil and hydrogen are mixed and then pass through a hydrocracking catalyst bed, high-nitrogen raw oil and hydrogen are mixed and then pass through a hydrocracking catalyst bed, reaction effluents respectively enter hot high-pressure separators and are separated, two routes of produced gas are mixed and injected into washing water and then enter a cold high-pressure separator via a high-pressure air cooler, and the produced hydrogen-rich gas is recycled after passing through a circulating hydrogen desulfurization tower. The integrated hydrocracking method organically combines hydrocracking processes for processing different natures of materials, consequently, on the basis of the normal processing of different natures of poor-quality materials, the respective characteristics of the materials can be sufficiently utilized, and thereby an ideal comprehensive processing effect can be achieved. The method integrates two gas routes together, and has the advantages of little equipment investment, lower operation cost, simplified process flow and the like.
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Description

technical field

[0001] The invention relates to a combined hydrocracking process, mainly referring to gas circuit combination, especially a combined method for separately processing high-nitrogen raw materials and high-sulfur raw materials by high-pressure hydrocracking. Background technique

[0002] Hydrocracking technology has many advantages such as strong feedstock adaptability, flexible product scheme, high liquid product yield, and good product quality. It has been favored by oil refining companies all over the world for many years. As one of the main processes for deep processing of heavy oil, hydrocracking can not only directly produce clean motor fuels such as gasoline, coal, and diesel, but also light and heavy naphtha and hydrocracking tail oil in its products are high-quality chemical raw materials. Therefore, In recent years, hydrocracking technology has gradually developed into a bridge technology for the organic combination of oil, chemical and fiber in modern...

Examples

Embodiment 1

[0030] use figure 1 In the process flow shown, the gas paths of hydrocracking units A and B are organically combined. The properties of the catalysts used in the examples are listed in Table 1. The catalyst is a commercial catalyst developed and produced by Fushun Petrochemical Research Institute.

[0031] The properties of raw oil and hydrocracking operating conditions are shown in Table 2, and the gas composition and amine consumption of high-fraction gas mixed with water are shown in Table 3.

[0032] Table 1 Main physicochemical properties of the catalyst

[0033] project

FF-36

FC-14

Appearance shape

Clover Strips

Cylindrical bar

Particle diameter, mm

1.1～1.3

1.5～1.7

Strip length, mm

3～8

3～8

Crushing strength, N / cm

≥180

＞185

Chemical composition, m%:

NiO

3.8

5.6

MoO 3

24.1

-

WO 3

-

22.0

[0034] Table ...