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Double lift pipe catalytic cracking method and device for modifying inferior patrol

A double riser, inferior gasoline technology, applied in catalytic cracking, cracking, petroleum industry and other directions, can solve the problem of small decrease in gasoline olefin content or sulfur content, and achieve the effect of reducing sulfur content and improving the ratio of agent to oil

Active Publication Date: 2007-02-07
SINOPEC LUOYANG PETROCHEM ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the problem that the olefin content or sulfur content of gasoline produced by the prior art is not greatly reduced

Method used

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  • Double lift pipe catalytic cracking method and device for modifying inferior patrol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] in such as figure 1 The test is carried out on the double riser catalytic cracking test device shown; the upper part of the gasoline riser reactor of this device is equipped with a bed reactor with an expanded diameter structure, and the test device is according to figure 1 A waiting catalyst delivery pipe is provided. The total length of the gasoline riser reactor is 4200mm, the length of the first reaction zone is 3000mm, and the inner diameter of the first reaction zone is Φ20mm. The inner diameter D of the cylindrical shell of the bed reactor is Φ60mm, and the length L of the bed reactor is 600mm. The delivery pipe for the raw catalyst is a metal pipe with a circular cross section, lined with a heat-insulating and wear-resistant lining; the inner diameter is Φ10mm, and the length is 5000mm. The medium of the conveying air passing into the spent catalyst conveying pipe is water vapor, and the temperature of the water vapor is 200° C. (note: the conveying air medium...

Embodiment 2～ Embodiment 5

[0037] The main operating conditions of the gasoline riser reactor are listed in Table 2, and the product distribution of the gasoline riser reactor and the main properties of the upgraded gasoline are listed in Table 3. The main operating conditions of the experimental device used in Examples 2 to 5, the processed feed and treatment capacity of the heavy oil riser reactor and the gasoline riser reactor, the catalyst used in the test, and the heavy oil riser reactor are all in Example 1. same.

[0038] As can be seen from Table 2, in embodiment 2~embodiment 5, the weight flow rate of the spent catalyst that enters the bed layer reactor through the spent catalyst conveying pipe is respectively the spent catalyst weight after stripping in the stripping section of the second settler 20w%, 30w%, 40w% and 60w% of the circulation amount.

Embodiment 6

[0043] The test was carried out on the test device used in Example 1. The heavy oil riser reactor processes Subei blended heavy oil, with a processing capacity of 30kg / d; the gasoline riser reactor feeds low-quality gasoline with gasoline produced by the heavy oil riser reactor (self-produced gasoline 2), with a processing capacity of 15kg / d d. The catalyst used in the test is LRC-99 industrial balancer, and its carbon content after regeneration is 0.09w%. The weight flow rate of the spent catalyst entering the bed reactor through the spent catalyst delivery pipe is 5w% of the weight circulation of the spent catalyst after stripping in the stripping section of the second settler. The main properties of the heavy oil riser reactor feed and the inferior gasoline feed of the gasoline riser reactor are listed in Table 1, the main operating conditions of the gasoline riser reactor are listed in Table 4, the product distribution and improvement of the gasoline riser reactor The ma...

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Abstract

The double lift pipe catalytic cracking process and apparatus for modifying inferior petrol in petroleum processing aims at reducing the olefin content and sulfur content in petrol greatly. The present invention features that inferior petrol material after contacting with the regenerated catalyst is first upstream reacted in the first reaction area in the petrol lift pipe reactor and then further flowed upwards to diameter expanding structure bed layer reactor in the upper part of the petrol lift pipe reactor for mixing with the catalyst, which is fed through the catalyst conveying pipe and water steam stripped in the stripping section of the second depositor, and reacting. The present invention is used mainly for modifying inferior petrol and can reduce greatly the olefin content and sulfur content in petrol simultaneously. The present invention also discloses relevant double lift pipe catalytic cracking apparatus.

Description

technical field [0001] The invention relates to a hydrocarbon oil refining method in the petroleum processing process, in particular to a double riser catalytic cracking method and device for upgrading inferior gasoline. Background technique [0002] In order to control the emission of pollutants from automobile exhaust, major developed countries in the world have imposed strict restrictions on the olefin content and sulfur content of motor gasoline. World fuel specification II, III and IV motor gasoline standards require sulfur content to be less than 200 μg / g, 30 μg / g and 10 μg / g, respectively, and olefin content to be less than 20v%, 10v% and 10v% respectively (v% means volume percentage); Euro III and Euro IV automotive gasoline emission standards require that the sulfur content is less than 150 μg / g and 50 μg / g respectively, and the olefin content is less than 18v%. 80w% of my country's motor gasoline comes from the catalytic cracking process (w% means weight percentag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00
Inventor 刘金龙闫鸿飞李玖云王文柯张庆宇陈曼桥
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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