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A combined process method for heavy oil conversion

A combined process and heavy oil technology, applied in the petroleum industry, hydroprocessing process, hydrocarbon oil treatment, etc., can solve limited and reduce coke yield and other problems, and achieve the effect of prolonging the operation cycle and simple process

Active Publication Date: 2019-09-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method is limited to reduce coke yield and improve product quality

Method used

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  • A combined process method for heavy oil conversion
  • A combined process method for heavy oil conversion
  • A combined process method for heavy oil conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] In this example, a combined process of solvent deasphalting, ebullating bed, fixed bed, and catalytic cracking is used to carry out heavy oil hydroconversion. Firstly, the raw material oil A is uniformly mixed with butane solvent, and then enters the solvent deasphalting device to obtain deasphalted oil and deoiled asphalt, and after preheating, the deoiled asphalt is mixed with hydrogen and enters the ebullated bed hydrotreating device for hydrogenation reaction, deasphalting Remove sulfur, nitrogen, metal and other heteroatoms in raw materials, and at the same time convert asphaltenes into colloids or smaller molecules, reduce product viscosity, and separate hydrogenation products to obtain liquid phase oil, which is mixed with deasphalted oil into The reaction is carried out in the fixed bed hydrogenation unit, and the resulting oil enters the catalytic cracking unit for further cracking and conversion into dry gas, catalytic cracking gasoline, catalytic cracking dies...

Embodiment 2

[0093] Raw material B is used as described in Example 2, and its properties are shown in Table 1. Example 2 The ebullated bed reactor uses a mixed catalyst with a volume ratio of catalyst A and catalyst B of 1:0.4.

Embodiment 3

[0095] Raw material C is used as described in Example 3, and its properties are shown in Table 1. Example 3 The ebullated bed reactor uses a mixed catalyst with a volume ratio of catalyst A and catalyst B of 1:1.

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Abstract

The invention discloses a combined process method for heavy oil conversion. The method comprises the following steps: heavy oil raw materials enter a solvent deasphalting device, deasphalted oil and deoiled asphalt are obtained; the obtained deoiled asphalt enters a fluidized bed hydrotreating device for fluidized bed hydrotreating; reaction effluent obtained from fluidized bed hydrotreating is mixed with deasphalted oil; meanwhile, at least part of recycle oil from the catalytic cracking device is added for mixing, and a mixture sequentially passes through a fixed bed hydropretreating reaction zone and a fixed bed hydrotreating reaction zone which are arranged in series; generated oil obtained from reaction effluent of the fixed bed hydrotreating reaction zone is used as a raw material of the catalytic cracking device; catalytic cracking gasoline, catalytic cracking diesel oil, reclaimed oil and oil slurry are obtained after a catalytic cracking reaction product is separated. With adoption of the method, the operation period of a treatment device can be greatly prolonged.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating heavy oil with a hydrogenation process. Background technique [0002] At present, the demand for gasoline, coal, diesel and other oil products, especially the demand for motor gasoline in the domestic and foreign oil product markets will continue to rise, while the demand for heavy fuel oil and other heavy oil products will show a downward trend. At the same time, the properties of crude oil are deteriorating day by day on a global scale, environmental protection regulations are becoming stricter, and increasingly stringent requirements are put forward for the quality of oil products. Therefore, how to realize the lightening of heavy oil and the continuous upgrading of the quality of gasoline and diesel products at a more economical and reasonable cost has become the focus of domestic and foreign refining industries. [0003] The main purpose of the resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
Inventor 耿新国刘铁斌翁延博李洪广杨旭
Owner CHINA PETROLEUM & CHEM CORP
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