A kind of hydrocracking method of inferior diesel oil

A technology for hydrocracking and inferior diesel oil, applied in chemical instruments and methods, hydrocarbon oil cracking, hydrocarbon oil treatment, etc., can solve the problems of small increase in cetane number, etc., achieve optimal pore size distribution range, concentrated pore size distribution, Remove the effect of non-skeletal structures

Active Publication Date: 2019-04-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that when dealing with raw materials with high sulfur, nitrogen and colloid content, the increase in cetane number is small, and the cetane number of the product still needs to be further improved

Method used

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  • A kind of hydrocracking method of inferior diesel oil
  • A kind of hydrocracking method of inferior diesel oil
  • A kind of hydrocracking method of inferior diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 95°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 410mL solution concentration is 78g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 63.8wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.15MPa, temperature Under the conditions of 530°C and a treatment time of 1.5 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 650mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 7.5%, and stirred at 80°C for 2 hours, then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the crystallization temperature i...

Embodiment 2

[0053] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 100°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 256mL solution concentration is 58g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 65.0wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.10MPa, temperature Under the conditions of 450°C and treatment time of 2.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 369mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 4.8%, and stirred at a constant temperature of 85°C for 2 hours , and then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the...

Embodiment 3

[0055] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 95°C, and start adding dropwise (NH 4 ) 2 SiF 6Aqueous solution, 410mL solution concentration is 78g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 63.8wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.15MPa, temperature Under the conditions of 480°C and treatment time of 1.0 hour, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 520mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 5.3%, and stirred at 80°C for 4 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallization, the crystallization temperature is...

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Abstract

The invention discloses a hydrocracking method for inferior diesel oil. The method comprises the steps of subjecting inferior diesel oil feedstock and a hydrocracking catalyst to contact, carrying out a hydrocracking reaction, and subjecting the obtained hydrocracking product to separation, thereby obtaining a gasoline fraction and a diesel fuel fraction, wherein modified Y molecular sieves serve as the hydrocracking catalyst and have the following properties: the relative crystallinity is 110% to 150%, the SiO2 / Al2O3 mole ratio is 10 to 50, the unit cell parameter is 2.436nm to 2.445nm, the total pore volume is 0.55mL / g to 1.0mL / g, and the pore volume of mesopores accounts for 70% or more of the total pore volume. The method can be used for effectively converting fractions of the inferior diesel oil to produce superior-quality gasoline and high-quality diesel fuel products.

Description

technical field [0001] The invention relates to a hydrocracking method, in particular to a hydrocracking method for producing high-octane gasoline by hydrogenating inferior catalytic diesel oil. Background technique [0002] Catalytic cracking (FCC) technology is one of the main technological means for lightening heavy oil, and it occupies a relatively important position in oil refining enterprises all over the world. The main feature of catalytic cracking technology is to crack the paraffins and cycloalkanes in the feed, and basically does not have the ability to destroy the ring of aromatics. Therefore, a large amount of condensed ring aromatics is usually enriched in catalytic cracking diesel. FCC diesel has high sulfur content and aromatics content, and poor engine ignition performance. It is a low-quality diesel blending component. It is mainly used to blend fuel oil, non-vehicle diesel and heating oil abroad. In China, due to the shortage of petroleum resources, catal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/16B01J29/14B01J29/16
CPCB01J29/146B01J29/166B01J2229/186C10G47/16C10G2400/02C10G2400/04
Inventor 刘昶王凤来关明华杜艳泽黄薇赵红郝文月曹均丰
Owner CHINA PETROLEUM & CHEM CORP
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