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Hydrocracking method for producing chemical materials

A technology for hydrocracking and chemical raw materials, which is applied in the fields of hydroprocessing, petroleum industry, and hydrocarbon oil treatment, and can solve problems such as complex processes

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method focuses on the use of solvent refining. Compared with the current direct hydrocracking unit, this method has a more complicated process

Method used

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  • Hydrocracking method for producing chemical materials
  • Hydrocracking method for producing chemical materials
  • Hydrocracking method for producing chemical materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The test feedstock oil C is a mixture of VGO feedstock A and CGO feedstock B, in which the proportion of CGO incorporated is 40%. The main properties of the VGO feedstock A, CGO feedstock B and feedstock oil C are shown in Table 1.

[0086] In the reaction hydrogen partial pressure 15.0MPa, the refining section is 368 °C, and the volumetric space velocity in the refining section is 1.0h -1 , the cracking section is 375°C, and the volumetric space velocity of the cracking section is 1.5h -1, under the reaction conditions of the hydrogen oil volume ratio of 1200, the main process conditions, the nitrogen content of the refined oil and the product distribution results are shown in Table 2, and the main product properties are shown in Table 3.

[0087] It can be seen from Table 1 that the hydrocracking raw material C is a mixture of VGO and 40% CGO, in which the nitrogen mass fraction reaches 0.23%, which is a relatively inferior wax oil fraction.

[0088] It can be seen f...

Embodiment 2

[0097] The test feedstock oil B is 100% CGO, and the main properties of the feedstock oil B are shown in Table 1.

[0098] In the reaction hydrogen partial pressure 15.0MPa, the refining section is 378 °C, and the volumetric space velocity in the refining section is 1.0h -1 , the cracking section is 385°C, and the volumetric space velocity of the cracking section is 1.5h -1 , under the reaction conditions with a hydrogen oil volume ratio of 1200, the main process conditions, the nitrogen content of the refined oil and the product distribution results are shown in Table 4, and the main product properties are shown in Table 5.

[0099] It can be seen from Table 1 that the hydrocracking raw material B is 100% CGO, in which the nitrogen mass fraction reaches 0.37%, which is an inferior hydrocracking feed.

[0100] It can be seen from Table 4 that the air velocity in the refining section is 1.0h -1 , the space velocity of the cracking section is 1.5h -1 Under the same conditions...

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Abstract

The invention discloses a hydrocracking method for producing chemical materials. The method comprises the steps of entering raw material oil and hydrogen into a hydrorefining reactor for performing hydrodesulfurization, hydro-denitrification, olefin saturation and partial aromatic saturation under the action of a hydrorefining catalyst; and carrying out contact reaction on the obtained effluent and a hydrocracking catalyst in a hydrocracking reactor. According to the method provided by the invention, the required transformation depth can be reached under a relatively mild reaction condition; heavy naphtha is good in selectivity; and long-term operation of a device is realized.

Description

technical field [0001] The invention belongs to a method for preparing hydrocarbon oil in the presence of hydrogen, more specifically, a hydrocracking method for producing chemical raw materials by blending coking wax oil in a large proportion. Background technique [0002] Delayed coking is one of the important secondary processing methods in refineries. Coking wax oil (hereinafter referred to as CGO) is the wax oil fraction obtained from the coking process, which generally accounts for 20% to 30% of the coking products. Compared with straight-run wax oil (hereinafter referred to as VGO), CGO has the characteristics of high nitrogen content, high colloidal content and high content of polycyclic aromatic hydrocarbons. It is a low-quality and difficult-to-process wax oil fraction. [0003] The continuous improvement of the processing capacity of coking units around the world has resulted in an increase in the production of coking wax oil (CGO) year by year. Coking wax oil ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
CPCC10G65/12
Inventor 赵阳董建伟胡志海蒋东红陈元君赵广乐王子文毛以朝
Owner CHINA PETROLEUM & CHEM CORP
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