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Production process of producing cleaning gasoline

A gasoline and clean technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of not meeting the requirements, achieve the effect of no loss of anti-knock index, and reduce the sulfur content

Active Publication Date: 2009-08-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for catalytic cracking (FCC) gasoline with high olefin content, the S-ZORB process can only desulfurize but cannot reduce olefins, and still cannot meet the requirements for olefins in clean gasoline specifications

Method used

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  • Production process of producing cleaning gasoline
  • Production process of producing cleaning gasoline
  • Production process of producing cleaning gasoline

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] This example prepares 2.0wt% NiO—0.50wt% ZnO—1.50wt% La 2 o 3 / Nano HZSM-5 desulfurization-reducing olefin catalyst.

[0041] Weigh 229.6g HZSM-5 (SiO 2 / Al 2 o 3 The molar ratio is 27, the grain size is 30nm~100nm) and 140.0gAl 2 o 3 , and grind and mix them evenly, add 150ml of dilute nitric acid solution and deionized water with a concentration of 5.6g / 100ml, and prepare a 1000ml slurry.

[0042] The above slurry was spray-dried, the air inlet temperature of the drying tower was 350°C, and the outlet air temperature was 150°C. The microspheres obtained by the cyclone separator were dried at 120° C. for 6 hours, and then calcined at 550° C. for 5 hours to prepare the nanometer HZSM-5 catalyst carrier intermediate. The obtained microspheres with a diameter of 40-100 microns accounted for 93 wt% of the total particles.

[0043] 100ml of the above-mentioned catalyst carrier intermediates were loaded into a vertical activation furnace, heated to 540° C. under an a...

example 2

[0047] This example prepares 4.0wt% MoO 3 —1.0wt%ZnO—3.0wt%La 2 o 3 / Ultrafine particle HBeta desulfurization-reducing olefin catalyst.

[0048] Weigh 239.6g HBeta(SiO 2 / Al 2 o 3 The molar ratio is 33, the grain size is 70nm~300nm), 140.0gAl 2 o 3 , and grind and mix them evenly, add 180ml of dilute nitric acid solution and deionized water with a concentration of 3.6g / 100ml, and prepare a 1000ml slurry.

[0049] The above slurry is spray-dried, the air inlet temperature of the drying tower is 320°C, and the outlet air temperature is 170°C. The microspheres obtained by the cyclone separator were dried at 110° C. for 8 hours, and then calcined at 570° C. for 3 hours. The obtained microspheres with a diameter of 40-100 microns accounted for 92 wt% of the total particles. Made into superfine particle HBeta desulfurization-reducing olefin catalyst carrier intermediate.

[0050] 120ml of the above-mentioned catalyst carrier intermediates were loaded into a vertical activa...

example 3

[0057] This example tests the catalytic performance of the NZ catalyst in Example 1.

[0058] with A # FCC gasoline is used as raw material, using NZ catalyst, see the process figure 1 .

[0059] The operating conditions of the fluidized bed reactor are as follows: the reaction pressure is 3.0MPa, the reaction temperature is 400°C, and the feed volume space velocity is 2.5h -1 The volume ratio to hydrogen oil is 400:1.

[0060] The regeneration conditions are as follows: the regeneration pressure is 0.8MPa, the volume ratio of gas to agent is 700:1, the temperature is kept at 530°C for 5.0 hours, and the regeneration gas is air.

[0061] Run 300 hours of sampling and analysis. Table 2 presents the feedstock and product mass balance data, and Table 3 presents the analytical results for the liquid product.

[0062] Table 2 Example 3 raw material and product material balance

[0063]

[0064] The analysis result of table 3 example 3 liquid products

[0065]

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Abstract

The invention discloses a method for producing clean gasoline from inferior gasoline fractions. The method is to use a fluidized bed continuous regeneration method to process inferior gasoline fractions. The process includes inferior gasoline raw materials and hydrogen contacting the hot desulfurization-reducing olefin catalyst in the riser, and lifting them to a fluidized bed reactor for reaction; then , the desulfurized olefin products and hydrogen sulfide-containing gas are separated from the raw catalyst for gas-solid separation, and the raw catalyst is transported to the regenerator after being stripped; in the regenerator, the raw catalyst is regenerated by burning charcoal in the presence of air; the obtained The regenerated catalyst is returned to the fluidized bed reactor for recycling. Compared with the prior art, the method of the present invention can greatly reduce the sulfur content, olefin content and benzene content of low-quality gasoline, and at the same time, the antiknock index ((R+M) / 2) of the produced clean gasoline does not lose substantially .

Description

1. Technical field [0001] The invention relates to a method for producing clean gasoline, in particular to a method for producing clean gasoline by hydrogenating inferior gasoline fractions. 2. Background technology [0002] In order to control air pollution, countries successively legislated to impose stricter restrictions on the content of sulfur and olefins in gasoline. Around 2005, the European IV emission standard (EN228-2004) formulated by the European Union and the U.S.EPA Tier2 formulated by the United States required the sulfur content of gasoline to be ≯50μg / g, and even proposed a sulfur-free gasoline with a sulfur content of 5μg / g-10μg / g. ", the olefin content will be reduced from ≯20.0v% to around 10.0v%. From July 1, 2005, China will require gasoline to have sulfur content≯500μg / g and olefin content≯30.0v%. Gasoline supplied to Beijing and Shanghai will implement gasoline specifications equivalent to the European III emission standard, and its main indicators ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/20
Inventor 赵乐平方向晨王继锋庞宏尤百玲刘继华
Owner CHINA PETROLEUM & CHEM CORP
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