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Method and device for modifying low-quality heavy oil

A technology of inferior heavy oil and upgrading device, which is used in the petroleum industry, refining and cracking process treatment, cracking and other directions only in multi-stage series

Inactive Publication Date: 2011-03-30
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and device for upgrading inferior heavy oil. The method and device can achieve the current technological goal of fluidized coking of heavy raw materials without changing the distribution and product properties of catalytic cracking products. And under the condition of retaining the technological advantages of fluidized coking, it is easy to overcome the technical difficulties of the existing fluidized coking process in the fluidized heat transfer, the manufacture of charcoal particles, char regeneration control and application, etc.

Method used

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  • Method and device for modifying low-quality heavy oil
  • Method and device for modifying low-quality heavy oil

Examples

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Effect test

Embodiment 1

[0037] According to the comparative example, the difference is the weight mixing ratio of the stripped spent catalyst from the riser reactor in the catalyst mixer and the regenerated catalyst from the regenerator, the temperature of the mixed catalyst in the catalyst mixer, the upgrading of inferior heavy oil The ratio of solvent to oil in the reactor, and the reaction time. See Table 3 for the operating conditions, product distribution and some product properties of the inferior heavy oil upgrading device in this example.

Embodiment 2

[0039] According to the comparative example, the difference is the weight mixing ratio of the stripped spent catalyst from the riser reactor in the catalyst mixer and the regenerated catalyst from the regenerator, the temperature of the mixed catalyst in the catalyst mixer, the upgrading of inferior heavy oil The ratio of solvent to oil in the reactor, and the reaction time. See Table 4 for the operating conditions, product distribution and some product properties of the inferior heavy oil upgrading device in this example.

Embodiment 3

[0041] According to the comparative example, the difference is the weight mixing ratio of the stripped spent catalyst from the riser reactor in the catalyst mixer and the regenerated catalyst from the regenerator, the temperature of the mixed catalyst in the catalyst mixer, the upgrading of inferior heavy oil The ratio of solvent to oil in the reactor, and the reaction time. See Table 5 for the operating conditions, product distribution and properties of some products of the inferior heavy oil upgrading device in this example.

[0042] Table 1 riser reactor feed properties (comparative example)

[0043] Heavy Oil Riser Reactor Feed

Daqing Atmospheric Residue

Daqing Vacuum Residue

Density (20℃), kg·m -3

908.2

0.9279

Charcoal residue, w%

4.2

9.06

Family composition, w%

saturated hydrocarbon

62.3

50

Aromatics

25.6

32.9

Colloid + asphaltenes

12.1

17.1

Sulfu...

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Abstract

The invention discloses method and device for modifying low-quality heavy oil. According to a catalytic cracking device, a fluidization low-quality heavy oil modifying process is formed by arranging a low-quality heavy oil modifying reactor and using a carbon deposit to-be-generated catalyst as a heat carrier. The to-be-generated catalyst from a catalytic cracking lifting pipe reactor is mixed with a regenerated catalyst from a regenerator to be used as the heat carrier entering the low-quality heavy oil modifying reactor for reacting with low-quality fed materials to generate an oil gas, the oil gas enters a fractionating column, and the separated catalyst enters the regenerator for regeneration for circulating. The device comprises a catalytic cracking lifting pipe reactor (1), a to-be-generated catalyst conveying pipe (5), a catalyst mixer (9), a low-quality heavy oil modifying reactor and a regenerator (6). Under the premise of no influence on the distribution and the quality of catalytic cracking products, the invention achieves the purpose of a low-quality heavy oil fluidization heat modification process, and is suitable for secondary processing on the low-quality heavy oil raw material with low content of heavy metals (Ni+V).

Description

technical field [0001] The invention relates to a method and device for upgrading inferior heavy oil. Background technique [0002] At present, the secondary thermal processing processes in the petrochemical industry are mainly: delayed coking process, flexible coking process and fluidized coking process; ART, ROP, etc. also belong to fluidized coking process. Compared with delayed coking and flexible coking, fluidized coking has obvious technological advantages. First, the liquid product yield of fluid coking is higher than that of delayed coking and flexible coking, but the coke yield is lower than that of delayed coking and flexible coking. Secondly, fluidized coking has less mechanical equipment and low investment. Because it is a closed system as a whole, the dust pollution caused during the start-up and operation of the device is reduced. The flue gas produced by the burner undergoes heat recovery, desulfurization and dust removal, and is superior to delayed coking a...

Claims

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Application Information

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IPC IPC(8): C10G55/06C10G11/00C10G7/00
Inventor 王文柯汤海涛张亚西孟凡东陈曼桥闫鸿飞王龙延樊麦跃武立宪陈章淼
Owner CHINA PETROCHEMICAL CORP
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