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A method for selective hydrogenation of pyrolysis gasoline

A pyrolysis gasoline and selective hydrogenation technology, applied in chemical instruments and methods, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as difficult quality control, narrow process operable range, complex catalyst components, etc., and achieve simple preparation method , good catalytic activity, low cost effect

Active Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the catalyst components are complicated, the quality control is difficult, and the process can be operated within a narrow range
[0006] In summary, in the prior art, the catalysts for the selective hydrogenation of pyrolysis gasoline are inorganic-supported catalysts, the catalyst components of this type are complex, and the preparation methods of the catalysts are complex
[0007] Therefore, for the selective hydrogenation process of pyrolysis gasoline, under the premise of ensuring better activity and selectivity, a catalyst can be developed, which can overcome the problem of complex catalyst preparation process in the prior art and will greatly improve the performance of pyrolysis gasoline hydrogenation catalysts. The application has important practical significance

Method used

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  • A method for selective hydrogenation of pyrolysis gasoline
  • A method for selective hydrogenation of pyrolysis gasoline
  • A method for selective hydrogenation of pyrolysis gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of catalyst (Raney Ni / polypropylene):

[0047] (1) Mold the polypropylene powder (Maoming Petrochemical, F280M) with a flat vulcanizer at a temperature of 200°C and a pressure of 7MPa for 10mins to form a sheet with a thickness of about 2mm;

[0048] (2) Take a 20g polypropylene sheet, spread a layer of nickel-aluminum alloy powder on the top and bottom of the sheet, the Ni content in the nickel-aluminum alloy is 48% (weight), and the aluminum weight content is 52% (weight), put it on the flat plate Sulfurization instrument, molded at a temperature of 220°C and a pressure of 7MPa for 10mins, took it out and cooled it, and the upper and lower surfaces of the polypropylene sheet were covered with nickel-aluminum alloy powder to obtain a supported catalyst sheet, weighing 120g;

[0049] (3) Cut the catalyst sheet into about 3-5mm particles;

[0050] (4) Prepare 400g of 10% NaOH aqueous solution with deionized water, add 100g of the catalyst obtained in step (3...

Embodiment 2

[0052] Preparation of Catalyst (Raney Ni / Nylon-6)

[0053] (1) Weigh 50g of nylon-6 particles (Baling Petrochemical, BL2340-H) and place them in the nickel-aluminum alloy powder. The Ni content in the nickel-aluminum alloy is 48% (by weight), and the aluminum content is 52% (by weight). Use a flat vulcanizer to press for 10 minutes at a temperature of 220°C and a pressure of 7 MPa, take it out and cool it, sieve it, and screen out spherical particles. The surface of the particles is completely covered by nickel-aluminum alloy powder, and the supported catalyst is obtained, weighing 210g;

[0054] (2) Prepare 400g of 20% NaOH aqueous solution with deionized water, add 40g of the catalyst obtained in step (1), keep the temperature at 85°C, and filter the solution after 4 hours to obtain an activated supported catalyst, and the final nickel metal loading in the catalyst It is 45% (by weight), after washing to near neutrality, it is stored in deionized water for subsequent use, an...

Embodiment 3

[0056] Preparation of catalyst (Raney Ni / Nylon-6):

[0057] (1) Mold nylon-6 (Baling Petrochemical, BL2340-H) with a flat vulcanizer at a temperature of 250 °C and a pressure of 7 MPa for 10 mins to form a sheet with a thickness of about 2 mm;

[0058] (2) Take a 20g nylon-6 sheet, spread a layer of nickel-aluminum alloy powder on the top and bottom of the sheet, the Ni content in the nickel-aluminum alloy is 48% (by weight), and the aluminum content is 52% (by weight), put it on the flat plate Sulfurization instrument, molding at a temperature of 220°C and a pressure of 7 MPa for 10 minutes, took it out and cooled it, and the upper and lower surfaces of the nylon-6 sheet were covered with nickel-aluminum alloy powder to obtain a supported catalyst sheet, weighing 180g;

[0059] (3) Mechanically cut the catalyst sheet into particles with an average particle size of about 3-5mm;

[0060] (4) Prepare 400g of 20% NaOH aqueous solution with deionized water, add 40g of the catalys...

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Abstract

The invention discloses a pyrolysis gasoline selective hydrogenation method which is characterized in that a reaction is carried out between a liquid-phase material flow, containing a pyrolysis gasoline C6-C8 and / or C5-C9 hydrocarbon compound middle fraction and / or a pyrolysis gasoline C5-204 DEG C hydrocarbon compound total fraction and hydrogen, which are employed as raw materials, through contact with a catalyst supported on an organic high-molecular material and being placed in a fixed bed reactor, wherein reaction conditions are described as follows: a reaction temperature is 35-120 DEG C; a reaction pressure is 2.0-5.0 MPa, the space velocity of fresh oil liquid is 1-16 / hours; and a volume ratio of hydrogen to the oil is 25-300.

Description

technical field [0001] The invention relates to a method for selective hydrogenation of pyrolysis gasoline, in particular to a method for one-stage selective hydrogenation of pyrolysis gasoline. Background technique [0002] Pyrolysis gasoline is the general term for the liquid by-product C5-C10 (204°C) fractions produced during the cracking of light oil to produce ethylene and propylene. Various manufacturers fractionate pyrolysis gasoline fractions with different boiling ranges according to their needs, and the most common ones are C6-C8, C5-C9, and C5-204°C whole fractions. The composition of pyrolysis gasoline is very complex, mainly including benzene, toluene, xylene, mono-olefins, di-olefins, straight-chain alkanes, cycloalkanes, and organic compounds of nitrogen, sulfur, oxygen, chlorine and heavy metals, etc., a total of more than 200 components, of which Benzene, toluene, and xylene (collectively referred to as BTX) are about 50-80% aromatics, and 25-30% unsaturate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/02C10G49/04B01J31/06
CPCB01J31/06C10G49/02C10G49/04
Inventor 王秀玲戴伟蒋海斌张晓红徐洋鲁树亮乔金樑
Owner CHINA PETROLEUM & CHEM CORP