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Method for hydrogenation dialkene removal of catalytically cracked gasoline

A technology for catalytically cracking gasoline and removing diolefins, which is applied in the field of hydrodediolefination of catalytically cracked gasoline in petroleum refining, and can solve the problems of low removal rate of diolefins and the like

Active Publication Date: 2008-12-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the influence of the carrier formula of the above-mentioned diolefin selective hydrogenation catalyst, its diolefin removal rate is low, and it cannot better solve the pressure drop of the next step reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take by weighing the Y molecular sieve (Na 2 (0≤0.2% by weight), 72gV250 powder, and they are ground and mixed evenly, adding about 2ml concentration is the dilute nitric acid solution of 2g / 100ml, stirred into a jelly with suitable humidity, extruded into a circumscribed circle diameter of 1.6 The clover-shaped strips of 1 mm were dried at 120° C. and calcined at 550° C. in an air atmosphere for 3 hours to obtain carrier ZT1.

[0028] Weigh 189.4 g (dry basis) of the carrier ZT prepared by the above method, and put it in an Erlenmeyer flask. After vacuuming the Erlenmeyer flask, use 100ml containing CoO2.4g, MoO 3 6.8g, MgO0.7g, NiO0.7g solution was sprayed slowly, and left to stand for 2 hours. Then, it was dried at 120° C. for 4 hours and calcined at 450° C. for 4 hours to obtain catalyst CAT1.

Embodiment 2

[0030] Weigh 89.4 g (dry basis) of the carrier ZT1 prepared in the above-mentioned Example 1, and put it into 200 ml of molybdenum, cobalt, nickel, and magnesium solutions for impregnation. The solution contains CoO2.4g, MoO 3 6.8g, MgO0.7g, NiO0.7g, impregnated at room temperature for 2 hours, then dried at 120°C for 4 hours, and calcined at 450°C for 4 hours to obtain catalyst CAT2.

Embodiment 3

[0032] Take by weighing the Y molecular sieve (Na 2 O≤0.2% by weight), 72gV250 powder, 2g NH 4 F, Grind and mix them evenly, add about 2ml of dilute nitric acid solution with a concentration of 2g / 100ml, stir it into a jelly with suitable humidity, extrude it into a clover-shaped strip with a circumscribed circle diameter of 1.6mm on the extruder, and bake at 120°C dry, and calcined at 550° C. in an air atmosphere for 3 hours to obtain carrier ZT2.

[0033] Weigh 4.2 g (dry basis) of the carrier ZT28 prepared by the above method, and put it in a conical flask. After vacuuming the Erlenmeyer flask, use 3.5g of CoO, MoO 3 100ml of a solution of 10.2g, MgO1.0g, and NiO1.1g was slowly sprayed, and left to stand for 2 hours. Then, it was dried at 120° C. for 4 hours and calcined at 450° C. for 4 hours to obtain catalyst CAT3.

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PUM

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Abstract

The invention relates to a method for catalyzing and cracking gasoline which is added with hydeogen for extracting alkadiene; catalyzed and cracked gasoline distillate with an alkadiene value of 2.56gI.(100g)<-1> is added with the hydrogen for extracting the alkadiene at a reaction temperature of 120 DEG C to 280 DEG C and at a hydrogen differential pressure of 1.0Mpa to 5.0 Mpa, an liquid hourly space velocity of 1.0h<-1> to 20.0h<-1> and volume ratio of hydrogen to oil of 10 to 400; the catalyst takes alumina and Y molecular sieve as composite carriers loading 3.35 percent of cobaltous oxide, 10.03 percent of molybdenum oxide, 0.86 percent of magnesia and 1.01 percent of nickel oxide, and the total weight of the catalyst is 100 percent; atomic ratio of magnesium to cobalt and nickel is 6.8; the average value of the alkadiene of the produced oil is reduced to be less than 0.2gI.(100g)<-1>; the selectivity of extracting the alkadien reaches 95.1 percent; the octane number of the raw oil (RON) is reduced to be not more than 1, monoolefine is reduced to be not more than 3v percent and the average value of the liquid yield of the gasoline is 99.6 mass percent.

Description

technical field [0001] The invention relates to a method for petroleum refining and catalytic cracking gasoline hydrogenation to diene. Background technique [0002] With the efforts of countries all over the world to reduce the emission of harmful substances in the exhaust gas of combustion engines, the properties and specifications of motor fuels (gasoline, diesel) are rapidly increasing. Many properties are emphasized in these specifications, especially the sulfur content and olefin content of gasoline. In the gasoline and diesel grade standards proposed by the "World Fuel Code", the sulfur content of type II gasoline is <200μg / g, and the olefin content is <20μg / g; the sulfur content of type III gasoline is <30μg / g, and the olefin content is < 10(v)%. There is a big gap between China's current fuel standards and the world's clean fuel standards. With China's accession to the WTO, China's clean fuel standards will also be internationalized. In China, FCC gas...

Claims

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Application Information

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IPC IPC(8): C10G45/38
Inventor 霍东亮崔德强王晓张鹛允陈冬梅张成涛
Owner BC P INC CHINA NAT PETROLEUM CORP
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