Hydrodesulfurization upgrading catalyst and preparation method thereof

A hydrodesulfurization and catalyst technology, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low specific surface area of ​​zinc oxide-containing materials and limited application of catalytic materials, and achieve good hydrogenation Desulfurization and olefin reduction performance, reduction of hydrothermal treatment process, effect of large specific surface area

Active Publication Date: 2019-12-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problem that the specific surface area of ​​zinc oxide-containing materials prepared by conventional preparation methods is low, and the application as a catalytic material is limited

Method used

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  • Hydrodesulfurization upgrading catalyst and preparation method thereof
  • Hydrodesulfurization upgrading catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 2.4 kg of zinc nitrate in 12 L of water to prepare a zinc-containing solution, and dissolve 0.32 kg of sodium meta aluminate and 0.40 kg of sodium carbonate in 5 L of water to prepare an aluminum-containing solution. Divide the zinc-containing solution into 4 equal parts, 3L each. Take 3L of zinc-containing solution, control the system temperature to 75℃, add aluminum-containing solution to it until the pH value reaches 9.4; stop dripping aluminum-containing solution, then drop 3L of zinc-containing solution into the mixing system, and continue to drip aluminum-containing solution Until the pH value reaches 9.4; Alternately titrate the aluminum-containing solution and the zinc-containing solution until all the zinc-containing solution is added to the mixing system, and the aluminum-containing solution is added dropwise for the last time until the pH reaches 9.4. The total titration time is 2 hours. After the obtained mixture was aged at 75°C for 4 hours, it was ...

Embodiment 2

[0041] Dissolve 1.9 kg of zinc chloride in 20 L of water to form a zinc-containing solution, and dissolve 0.40 kg of sodium metaaluminate and 0.80 kg of sodium carbonate in 8.5 L of water to form an aluminum-containing solution. Take 8L of zinc-containing solution, control the temperature of the system to 65°C, and add aluminum-containing solution to it until the pH value reaches 9.1; the remaining zinc-containing solution is divided into 3 equal parts, each of 4L. Alternate titration of aluminum-containing solution and zinc-containing solution until all the zinc-containing solution is added to the mixing system, the last time the aluminum-containing solution is added dropwise until the pH reaches 9.1, and the total titration time is 6 hours. The obtained mixture was aged at 76°C for 8 hours, cooled and washed to neutrality, and dried in an air atmosphere at 90°C for 10 hours to obtain a zinc-aluminum layered material 2 with the molecular formula Zn 0.67 Al 0.33 (OH) 2.03 (CO 3 ...

Embodiment 3

[0048] Dissolve 800 g of zinc nitrate in 4 L of water to prepare a zinc-containing solution, and dissolve 120 g of sodium metaaluminate and 120 g of sodium carbonate in 1.7 L of water to prepare an aluminum-containing solution. Take 2L of zinc-containing solution, control the system temperature at 60℃, add aluminum-containing solution to it until the pH value reaches 9, stop dripping aluminum-containing solution, add the remaining 2L zinc-containing solution to the mixing system, and continue to drip The titration time of the aluminum solution reaches 9 and the total titration time is 4 hours. After the obtained mixture was aged at 85°C for 4 hours, it was cooled and washed to neutrality, and dried in an air atmosphere at 120°C for 5 hours to obtain a zinc-aluminum layered material 3 with the molecular formula Zn 0.59 Al 0.63 (OH) 2.44 (CO 3 ) 0.195 ·6H 2 O, the molar ratio of zinc to aluminum is 0.94, the specific surface area is 260m 2 / g.

[0049] Take 50g zinc-aluminum layere...

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Abstract

The invention relates to a hydrodesulfurization upgrading catalyst. The hydrodesulfurization upgrading catalyst is prepared from, 5-70 % by weight of the catalyst of molecular sieve, 2-10 % by weight of oxide of VIB family metal, 1-5 % by weight of oxide of VIII family metal, 5-50 % by weight of the catalyst of zinc aluminum layered material prepared through inconstant pH alternative titration and 0-10 % by weight of oxide of phosphorus. The zinc aluminum layered material has a large specific surface area, is uniform in zinc aluminum dispersion, and is used for preparing a catalytic cracking hydrodesulfurization upgrading catalyst, and the catalyst has good hydrodesulfurization performance and olefin reduction performance.

Description

Technical field [0001] The invention relates to a catalytically cracked gasoline hydrodesulfurization and upgrading catalyst and a preparation method thereof, which mainly prepare a uniformly dispersed, high specific surface area zinc-aluminum layered material by alternate titration of an aluminum-containing sodium carbonate solution and a zinc-containing solution with non-constant pH , The material and molecular sieve material composite preparation catalyst can be used for catalytic cracking gasoline hydrodesulfurization and olefin reduction. Background technique [0002] Due to the complex source of my country's FCC gasoline, its properties have changed greatly. Especially compared to foreign gasoline, the sulfur content is generally 100-500v%, and some of the raw materials are high-sulfur, high-olefin raw materials, the sulfur content is above 500mg / kg, and the olefin content exceeds 40%. Selective hydrodesulfurization technology will inevitably cause partial saturation of ol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48B01J29/85B01J35/10C10G45/12
CPCB01J29/005B01J29/48B01J29/85B01J35/1004C10G45/12
Inventor 吴杰张忠东高源范国宁李景锋初伟姚文君何崇慧李自夏王廷海向永生刘蕾
Owner PETROCHINA CO LTD
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