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Treatment method of residual oil

A treatment method and technology for residual oil, which is applied in the fields of hydrocarbon oil treatment, hydrotreating process, petroleum industry, etc. It can solve the problems of unfavorable device stable operation, unable to fundamentally change the pressure drop growth trend of the pre-reactor, etc.

Active Publication Date: 2017-05-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method alleviates the increase in pressure drop by changing the loads of each anti-feed, but cannot fundamentally change the growth trend of the pre-reactor pressure drop. From the point of view of actual industrial operation, once the pressure drop starts to increase, it will quickly reach the design upper limit. Moreover, changing the feeding of each reverse inlet is not conducive to the stable operation of the device.

Method used

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  • Treatment method of residual oil
  • Treatment method of residual oil

Examples

Experimental program
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Effect test

Embodiment 1

[0076] The properties of raw material A used in Example 1 are shown in Table 1. After separation, light fraction and heavy fraction were obtained, and the cut point was 590°C. The heavy fraction is processed through a solvent deasphalting unit to obtain deasphalted oil and deoiled asphalt. The obtained deasphalted oil and light fraction, 50% of the catalytic cracking diesel and all the catalytic cracking heavy cycle oil of the catalytic cracking unit are 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, Catalysts in Hydrogenation Pretreatment Reactor B, Hydrogenation Pretreatment Reactor C, and Hydrotreating Reactor D are loaded according to the method in Table 3, and the operating conditions of residue oil hydrogenation are shown in ...

Embodiment 2

[0078] In Example 2, the properties of the raw material B used are shown in Table 1. After separation, the light fraction and the heavy fraction were obtained, and the cut point was 605°C. The obtained heavy fraction is processed through a solvent deasphalting unit to obtain deasphalted oil and deoiled asphalt. The deasphalted oil and light fraction, 30% of the catalytic cracking diesel and all the catalytic cracking heavy cycle oil of the catalytic cracking unit are sent to the hydropretreatment reaction zone. The total catalyst loading and feed properties of the hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the feed space velocity is different. The hydrogenation pretreatment reactor The hourly volume space velocity of liquid A is 0.20h -1 , the hourly volumetric space velocity of liquid B in the hydrogenation pretreatment reactor is 0.32h -1 , the volumetric space velocity of l...

Embodiment 3

[0080] In Example 3, raw materials A, B, and C were separated to obtain light fraction and heavy fraction, and the cut point was 600°C. Then, the obtained heavy fraction is processed through a solvent deasphalting device to obtain deasphalted oil and deoiled asphalt. The hydrogenation pretreatment reactor A adopts the light fraction and deasphalted oil of raw material A, the hydrogenation pretreatment reactor B adopts the light fraction and deasphalted oil of raw material B, and the hydrogenation pretreatment reactor C adopts the light fraction and deasphalted oil of raw material C. Distillates and deasphalted oils. The feed amount of described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C is the same, and described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor The same catalyst loading method was adopted in the hydrogen pretreatment reactor C. T...

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Abstract

The invention discloses a treatment method of residual oil, which comprises a solvent deasphalting device, a hydrogenation pretreatment reaction area, a hydrogenation treatment reaction area and a catalytic cracking reaction area. The method comprises the following steps that the raw residual oil is fractionated to obtain a light fraction and a heavy fraction; the heavy fraction is treated in the solvent deasphalting device to obtain deasphalted oil and deoiled asphalt; the light fraction, the deasphalted oil and hydrogen are mixed and then sequentially pass through the hydrogenation pretreatment reaction area and the hydrogenation treatment reaction area which are connected in series; gas-liquid separation is performed on a reaction effluent of the hydrogenation treatment reaction area; a gas phase cycles back to the hydrogenation pretreatment reaction area and / or the hydrogenation treatment reaction area; a liquid phase directly enters the catalytic cracking reaction area to perform a catalytic cracking reaction; and a catalytic cracking reaction effluent is separated to obtain dry gas, liquefied gas, a catalytic cracking gasoline fraction, a catalytic cracking diesel fraction, catalytic cracking heavy cycle oil and catalytic cracking slurry oil. The method can prolong a stable operation period of a device.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating heavy oil by using a solvent deasphalting-hydrogenation combined 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. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/1077
Inventor 刘铁斌耿新国翁延博李洪广
Owner CHINA PETROLEUM & CHEM CORP
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