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A method for lightening heavy oil

A lightening and heavy oil technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problems of reducing coke yield, limited and other problems, and achieve extended operation period, simple process, and metal removal/capacity. boosted effect

Active Publication Date: 2019-08-06
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 method for lightening heavy oil
  • A method for lightening heavy oil
  • A method for lightening heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Raw material A is used as described in Example 1, and its properties are shown in Table 1. Feedstock A was separated to obtain light fraction and heavy fraction with a cut point of 538°C. After the heavy fraction is processed by the coking unit, coker gasoline, coker diesel oil, coker gas oil and coke are obtained. The reaction conditions of the coke unit are shown in Table 8; the light fraction and coker gas oil are mixed with hydrogen and sent to the hydrogenation pretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, 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, hydroprocessin...

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 545°C. After the heavy fraction is processed by the coking unit, coker gasoline, coker diesel oil, coker gas oil and coke are obtained. The reaction conditions of the coke unit are shown in Table 8; the light fraction and coker gas oil are mixed with hydrogen and sent to the hydrogenation pretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, 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, ...

Embodiment 3

[0093]Raw material C is used 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. After the heavy fraction is processed by the coking unit, coker gasoline, coker diesel oil, coker gas oil and coke are obtained. The reaction conditions of the coke unit are shown in Table 8; the light fraction and coker gas oil are mixed with hydrogen and sent to the hydrogenation pretreatment 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 pretre...

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Abstract

The invention discloses a light treatment method for heavy oil. The method comprises the following steps: a heavy oil raw material is fractionated, light fractions and heavy fractions are obtained, the obtained heavy fractions enter a coking device, and coked gasoline, coked diesel oil, coked wax oil and coke are obtained after treatment; the light fractions, the coked wax oil and hydrogen are mixed and sequentially pass through a fixed bed hydropretreating reaction zone and a fixed bed hydrotreating reaction zone which are arranged in series, generated oil obtained from the fixed bed hydrotreating reaction zone enters a fluidized bed hydrocracking reaction zone, and after reaction effluent of the fluidized bed hydrocracking reaction zone is separated, gas, gasoline, diesel oil, wax oil and unconverted oil are obtained; the obtained unconverted oil is mixed with the heavy fractions, and a mixture enters a coking unit for treatment. With adoption of the method, the operation period of aheavy oil hydrotreating 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): C10G67/00
CPCC10G67/00
Inventor 耿新国刘铁斌翁延博李洪广杨旭
Owner CHINA PETROLEUM & CHEM CORP
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