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Heavy oil hydrotreating method

A treatment method, heavy oil hydrogenation technology, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of reducing coke yield, limited, etc., and achieves extended operation period, simple process, metal removal/accommodation The effect of ability improvement

Active Publication Date: 2018-06-01
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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Examples

Experimental program
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Effect test

Embodiment 1

[0089] Raw material A is used as described in Example 1, and its properties are shown in Table 1. Raw material A is separated to obtain light fraction and heavy fraction with a cut point of 530°C. After the heavy fraction is processed by the solvent deasphalting unit, deasphalted oil and deoiled asphalt are obtained. The operating conditions of solvent deasphalting are shown in Table 8. The resulting deasphalted oil and light fractions are sent to the hydropretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, The catalysts of hydroprocessing reactor B, hydroprocessing reactor C, and hydroprocessing reactor D are loaded according to the mode in Table 2, and the hydroprocessing reactor A, hydroprocessing reactor B, The operating conditions of hydrogenation pretrea...

Embodiment 2

[0091] Raw material B is used as described in Example 2, and its properties are shown in Table 1. Feedstock B was separated into light and heavy fractions with a cut point of 538°C. The heavy fraction is processed through a solvent deasphalting unit to obtain deasphalted oil and deoiled asphalt; see Table 8 for the operating conditions of solvent deasphalting. The resulting deasphalted oil and light fractions are sent to the hydropretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, The catalysts of hydroprocessing reactor B, hydroprocessing reactor C, and hydroprocessing reactor D are loaded according to the mode in Table 2, and the hydroprocessing reactor A, hydroprocessing reactor B, The operating conditions of hydrogenation pretreatment reactor C, hydrotreat...

Embodiment 3

[0093]Raw material C is used as described in Example 3, and its properties are shown in Table 1. Feedstock C is separated to obtain light fraction and heavy fraction with a cut point of 550°C. The heavy fraction is processed through a solvent deasphalting unit to obtain deasphalted oil and deoiled asphalt; see Table 8 for the operating conditions of solvent deasphalting. The resulting deasphalted oil and light fractions are sent to the hydropretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, The catalysts of hydroprocessing reactor B, hydroprocessing reactor C, and hydroprocessing reactor D are loaded according to the mode in Table 2, and the hydroprocessing reactor A, hydroprocessing reactor B, The operating conditions of hydrogenation pretreatment reactor C,...

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Abstract

The invention discloses a heavy oil hydrotreating method. The method comprises the following steps: (1) heavy oil raw materials are fractionated, and light fractions and heavy fractions are obtained;(2) the heavy fractions obtained in the step (1) enter a solvent deasphalting device, and deasphalted oil and deoiled asphalt are obtained after treatment; (3) the light fractions obtained in the step(1) and the deasphalted oil obtained in the step (2) are mixed with hydrogen, a mixture passes through a fixed bed hydropretreating reaction zone and a fixed bed hydrotreating reaction zone which arearranged in series sequentially, generated oil obtained in the fixed bed hydrotreating reaction zone enters a fluidized bed hydrocracking reaction zone, a reaction effluent from the fluidized bed hydrocracking reaction zone is separated, and gas, gasoline, diesel oil, wax oil and unconverted oil are obtained; (4) after the unconverted oil obtained in the step (3) is mixed with the heavy fractionsobtained in the step (1), the mixture enters a solvent deasphalting device for treatment. 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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IPC IPC(8): C10G67/02
Inventor 耿新国刘铁斌翁延博李洪广杨旭
Owner CHINA PETROLEUM & CHEM CORP
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