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High-viscosity heavy oil processing method

A processing method and heavy oil technology, applied in the petroleum industry, cracking, catalytic cracking, etc., can solve problems such as prolonging the production cycle, and achieve the effects of improving liquid yield, overcoming severe coking, and reducing coking.

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only prolongs the production cycle by optimizing the process conditions, and does not fundamentally solve the problem of coking in the furnace tube of the visbreaking heating furnace

Method used

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  • High-viscosity heavy oil processing method
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  • High-viscosity heavy oil processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0025]Carry out 4 groups of tests on the heavy oil visbreaking test device, are respectively embodiment 1, embodiment 2, embodiment 3, embodiment 4. The test device flow chart of embodiment sees figure 1 .

[0026] The heavy oil raw material enters from the top of the visbreaking tower after exchanging heat with the vis-reduced residual oil generated by the heat exchanger to 200-400°C; the catalytic flue gas raw material passes through the heat exchanger and reacts with the unstable gasoline and vis-reduced diesel oil After heat exchange to 200-300°C, enter the catalytic flue gas heating unit to heat to 350-900°C, then heat the catalytic flue gas and introduce it into the deoxidation reactor for deoxidation treatment, and control the oxygen content in the catalytic flue gas below 0.01-1wt%. The deoxidized catalytic flue gas enters the visbreaking tower; the heavy oil is in contact with the hot air of the catalytic flue gas at 350-900°C for at least 0.01-60 minutes in the visb...

Embodiment 1

[0029] The feed oil used in Example 1, Example 2, Example 3, Example 4 and Comparative Example 1 is the same vacuum residue feed, and its kinematic viscosity at 100°C is 590mm 2 / s, the feed rate is 50kg / h, the specific properties are shown in Table 1. For other operating procedures, please refer to the descriptions in the specific embodiment section of this manual in conjunction with the accompanying drawings, see Table 2 for the main operating conditions, and see Table 3 for product distribution.

[0030] Table 1 Properties of raw oil

[0031]

[0032] Table 2 Main operating conditions

[0033]

[0034] Table 3 Product Distribution

[0035]

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PUM

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Abstract

The invention discloses a high-viscosity heavy oil processing method. Visbreaking reaction is carried out on a high-viscosity heavy oil raw material in a visbreaking tower under the action of catalytic flue gas; the visbreaking reaction pressure is generally -0.03-0.3 MPa and is preferably -0.01-0.1 MPa; the reaction temperature is generally 380-550 DEG C and is preferably 400-450 DEG C; and the visbreaking reaction time is generally 0.01-60 min and is preferably 5-20 min. The high-viscosity heavy oil processing method disclosed by the invention has the advantages that the yield of a light product can be greatly increased, and the coking of equipment can be effectively prevented.

Description

technical field [0001] The invention relates to a processing method for high-viscosity heavy oil, in particular to a method for reducing the viscosity of high-viscosity heavy oil with low energy consumption and high efficiency. Background technique [0002] Visbreaking has the advantages of simple equipment, less investment, the ability to process low-quality residual oil, and mature technology. It can produce light oil or raw materials for further light processing, so it is widely used in refineries or residual oil processing plants. Relevant statistical data show that in the processing of residue oil, visbreaking accounts for more than 30%, while in the thermal processing of residue oil, visbreaking accounts for more than 50%. . [0003] Visbreaking is a shallow thermal conversion process, which mainly uses vacuum residue as raw material. Visbreaking has been used for resid upgrading since the 1930s. Its purpose is thermal conversion, which can not only reduce the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/02
Inventor 彭冲郭蓉曾榕辉吴子明崔哲曹正凯
Owner CHINA PETROLEUM & CHEM CORP
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