A kind of high-octane gasoline production method

A high-octane gasoline and production method technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of rapid catalyst deactivation, small heating space, short operation cycle, etc., and achieve hydrogen utilization The effect of high efficiency, improved response speed, and simple process

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this technology is that under the premise of ensuring the gasoline yield and octane number, the catalyst is deactivated quickly, the heating space is small, and the operating cycle of the device is short
In conclusion, there is no known method for catalytic distillation due to hydrocracking of diesel fractions

Method used

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  • A kind of high-octane gasoline production method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Weigh raw material NH 4 NaY type molecular sieve (80% ammonium exchange degree, 27.1% weight loss on ignition, SiO 2 / Al 2 o 3 The molar ratio is 5.3, the sodium oxide content is 4.0wt%) 2057.6 grams, add 9 liters of distilled water to make a slurry, and heat the slurry to 95 ° C under stirring conditions; add dropwise 495.0 grams of ammonium hexafluorosilicate to the above slurry The solution prepared with 3500 ml of distilled water was dripped in 2 hours, then continued to stir at 95°C for 2 hours, stopped stirring and allowed to stand for about 10 minutes, separated the precipitated fluoro(silicon)ammonium aluminate sodium crystals by decantation, And after washing with water and drying, the Y-type molecular sieve precursor A1 is obtained.

[0064] Weigh raw material NH 4 NaY type molecular sieve (ammonium exchange degree is 75%, burning weight loss is 26%, SiO 2 / Al 2 o 3 The molar ratio is 4.5, the sodium oxide content is 4.0wt%) 270 grams, add 1.2 liters of...

Embodiment 2

[0066] The present embodiment prepares hydrocracking catalyst C1, and concrete steps are as follows:

[0067] (1) The Y-type molecular sieve precursor A1 was subjected to hydrothermal treatment, and the hydrothermal treatment conditions were as follows: the temperature was 600° C., the water pressure was 0.1 MPa, and the treatment time was 1 hour to obtain the Y-type molecular sieve Y1.

[0068] (2) Take 30.6 grams of the Y-type molecular sieve Y1 obtained in step (1), made of 240 grams of small-pore alumina (pore volume 0.47mL / g, specific surface area 280m 2 / g), 0.2N dilute nitric acid solution 440mL peptized binder mixed, extruded and shaped, then dried at 110°C for 5 hours, and calcined at 600°C for 6 hours to obtain a catalyst carrier.

[0069] (3) The catalyst carrier obtained in step (2) was impregnated with an aqueous solution containing molybdenum and nickel, dried at 110°C for 5 hours, and calcined at 500°C for 5 hours to prepare the hydrocracking catalyst C1 of the pr...

Embodiment 3

[0071] This embodiment prepares hydrocracking catalyst C2, and concrete steps are as follows:

[0072] (1) Mix 68g of Y-type molecular sieve precursor A1 with a binder prepared by peptizing 160g of small-pore alumina and dilute nitric acid solution (same as in implementation 2), extrude and shape.

[0073] (2) Treat the molded product obtained in step (1) with ammonia-water vapor at high temperature, the treatment conditions are as follows: temperature 550°C, pressure 0.1MPa, ammonia partial pressure 0.01MPa, treatment time 1 hour, obtained The carrier contains Y-type molecular sieve Y2.

[0074] (3) The catalyst support obtained in step (2) is impregnated with an aqueous solution containing tungsten and nickel, dried at 110°C for 5 hours, and calcined at 500°C for 5 hours to prepare the hydrocracking catalyst C2 of the present invention.

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Abstract

The present invention discloses a high octane number gasoline production method, which is used for processing catalytic diesel fuel so as to produce the high octane number gasoline distillate, wherein the process mainly adopts a reaction distillation tower and a hydrogen circulation system, the stripping section of the reaction distillation tower adopts a hydrocracking catalyst as a filler, the rectification section is provided with the rectification tower plate, the tower plate is provided with an isomerization catalyst, the tower bottom oil is circulated to the material inlet of the tower, a hydrogen circulation heating furnace is arranged, the heated hydrogen gas enters the bottom portion of the tower, the gasoline distillate is obtained from the top of the tower, and a small amount (less than 2%) of the diesel fuel distillate is periodically discharged from the bottom of the tower. According to the method of the present invention, the characteristics of the hydrocracking and the reaction distillation process are completely utilized, such that the secondary cracking reaction of the light distillate is reduced, the liquid yield is increased, and the gasoline distillate yield is more than 90%. With the method of the present invention, the catalytic diesel fuel is completely catalyzed, the octane number of the produced is high, and compared with the conventional hydrogenation process, the method of the present invention has characteristics of simple process and energy saving.

Description

technical field [0001] The invention relates to a catalytic distillation method, in particular to a hydrocracking method capable of effectively treating inferior catalytic cracked diesel oil. Background technique [0002] Crude oil is becoming increasingly heavy and inferior, the market demand for heavy oil is decreasing, the demand for light oil is increasing, and the degree of deep conversion of heavy residual oil is continuously increasing. Catalytic cracking is one of the important means in the lightening of many heavy oils. However, the properties of the products obtained by catalytic cracking are generally poor, and further processing is required to obtain qualified products. The diesel fraction obtained from catalytic cracking generally has the characteristics of high aromatics content, low cetane number, high sulfur and nitrogen content, and it is difficult to directly use it as a product, and it is difficult to effectively improve its product quality by ordinary pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/10
Inventor 赵玉琢
Owner CHINA PETROLEUM & CHEM CORP
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