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Catalytic cracking desulfur method of faulty gasoline and device thereof

A low-quality gasoline, catalytic cracking technology, applied in catalytic cracking, cracking, petroleum industry and other directions, can solve the problems of short reaction time, limited reduction of sulfur content in modified gasoline, etc., and achieve the effect of improving the overall activity

Active Publication Date: 2007-01-31
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the existing double-riser catalytic cracking process and device adopt the riser reactor in the gasoline reforming reactor, so that the catalyst-oil ratio is relatively low and the reaction time is short, resulting in the sulfur content of reformed gasoline The problem of limited decline

Method used

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  • Catalytic cracking desulfur method of faulty gasoline and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] in such as figure 1 The test is carried out on the double-reactor catalytic cracking desulfurization test device of the present invention shown. The gasoline fast bed reactor has an inner diameter of Φ60mm and a length of 4200mm. The catalyst mixer has an inner diameter of Φ100mm and a length of 800mm. 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, and the inner diameter is Φ12mm. The medium of the conveying wind which is passed into the conveying pipe of the standby catalyst through the conveying air pipe is water vapor, and the temperature of the water vapor is 200°C. The temperature of the water vapor fed through the steam distributor in the catalyst mixer is also 200°C. The heavy oil riser reactor processes Subei blended heavy oil, with a processing capacity of 30kg / d; the gasoline fast-bed reactor feeds low-quality gasoline with gasoline produced by the heavy oil riser...

Embodiment 2～ Embodiment 5

[0045] The test was carried out on the test device used in Example 1. The main operating conditions of the heavy oil riser reactor and the gasoline fast bed reactor are listed in Table 2, and the product distribution of the gasoline fast bed reactor and the main properties of the upgraded gasoline are listed in Table 3. In embodiment 2~embodiment 5, the processed feedstock and treatment capacity of test device, heavy oil riser reactor and gasoline fast bed reactor, test catalyst used and other unspecified main operating conditions are all the same as in embodiment 1. of the same.

[0046] As can be seen from Table 2, in Examples 2 to 5, the weight flow rate of the spent catalyst that enters the catalyst mixer through the spent catalyst delivery pipe is respectively the weight flow of the spent catalyst after stripping in the stripping section of the second settler. 20w%, 40w%, 60w% and 80w% of the amount.

Embodiment 6

[0051] 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 fast-bed reactor feeds low-quality gasoline with the 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 balance agent, the balance catalyst has a microreaction activity of 62 and a carbon content of 0.09w%. The weight flow rate of the spent catalyst entering the catalyst mixer 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 fast bed reactor are listed in Table 1. The main operating conditions of the heavy oil riser reactor and the gasoline fast bed reactor are listed in...

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Abstract

The present invention discloses a catalytic cracking desulfurization method of low-grade gasoline in the field of petroleum processing technology and its equipment. It is characterized by that the invented gasoline upgrading reactor adopts gasoline fast bed reactor with cylindrical structure, a portion of spent catalyst can be passed through spent catalyst coveying pipeline with flow control valve and fed into catalyst mixer, and is mixed together with regenerated catalyst coming from regenerator under the action of aqueous vapor, then fed into gasoline fast bed reactor and is contacted with low-grade gasoline feed so as to make reaction to greatly reduce sulfur content of low-grade gasoline.

Description

technical field [0001] The invention belongs to the field of petroleum processing and relates to a method and device for catalytic cracking and desulfurization of 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 gasoline sulfur content to be less than 150 μg / g and 50 μg / g respectively, and olefin content to be less than 18v%. 80w% of my country's motor gasoline comes from the catalytic cracking process (w% means weight percentage), and the olefin content and sulfur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
Inventor 张立新李玖云闫鸿飞王文柯陈曼桥武立宪张亚西
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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