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Sulfur-loaded hydrodesulfurization upgrading catalyst and preparation method

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: 2020-01-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Sulfur-loaded hydrodesulfurization upgrading catalyst and preparation method
  • Sulfur-loaded hydrodesulfurization upgrading catalyst and preparation method
  • Sulfur-loaded hydrodesulfurization upgrading catalyst and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 2.4kg of zinc nitrate in 12L of water to make a solution containing zinc, and dissolve 0.32kg of sodium metaaluminate and 0.40kg of sodium carbonate in 5L of water to make a solution containing aluminum. Divide the zinc-containing solution into 4 equal parts, each 3L. Take 3L zinc-containing solution, control the system temperature to 75°C, add aluminum-containing solution dropwise to it until the pH value reaches 9.4; stop adding aluminum-containing solution dropwise, then add 3L zinc-containing solution dropwise to the mixing system, and continue to drop aluminum-containing solution Titrate until the pH value reaches 9.4; alternately titrate the aluminum-containing solution and the zinc-containing solution until all the zinc-containing solutions are added to the mixing system, and add the aluminum-containing solution dropwise until the pH reaches 9.4. The total titration time is 2 hours. The obtained mixture was aged at 75°C for 4 hours, cooled and washed unt...

Embodiment 2

[0041] Dissolve 1.9kg of zinc chloride in 20L of water to form a zinc-containing solution, and dissolve 0.40kg of sodium metaaluminate and 0.80kg of sodium carbonate in 8.5L of water to form an aluminum-containing solution. Take 8L of zinc-containing solution, control the system temperature at 65°C, add aluminum-containing solution dropwise to it until the pH value reaches 9.1; the remaining zinc-containing solution is divided into 3 equal parts, each 4L. The aluminum-containing solution and the zinc-containing solution are alternately titrated until all the zinc-containing solutions are added to the mixing system, and the aluminum-containing solution is added dropwise until the pH reaches 9.1. The total titration time is 6 hours. The obtained mixture was aged at 76°C for 8 hours, cooled and washed until neutral, 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 ) 0.15...

Embodiment 3

[0048] Dissolve 800g of zinc nitrate in 4L of water to form a zinc-containing solution, and dissolve 120g of sodium metaaluminate and 120g of sodium carbonate in 1.7L of water to form an aluminum-containing solution. Take 2L zinc-containing solution, control the system temperature at 60°C, add aluminum-containing solution dropwise to it until the pH value reaches 9, stop adding the aluminum-containing solution dropwise, add the remaining 2L zinc-containing solution dropwise to the mixing system, and continue to drop the Aluminum solution until the pH value reaches 9, the total titration time is 4h. The obtained mixture was aged at 85°C for 4 hours, cooled and washed until neutral, 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, and the specific surface area is 260m 2 / g.

[0049] Take 50g of zinc-alumin...

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Abstract

The invention relates to a sulfur-carrying hydrodesulfurization upgrading catalyst. On the basis of weight of the catalyst, content of a molecular sieve in the catalyst is 5-70wt%, VIB-family metal content is 2-10wt% calculated according to oxide, VIII-family metal content is 1-5wt% calculated according to oxide, sulfur content is 3-8wt%, content of a zinc-aluminum lamellar material prepared through non-constant pH alternate titration is 5-50%, and phosphorus content is 0-10wt% calculated according to oxide. The zinc-aluminum lamellar material in the catalyst has large specific surface area, and the sulfur-carrying hydrodesulfurization upgrading catalyst prepared by compositing the zinc-aluminum lamellar material with a molecular sieve material has good hydrodesulfurization and olefin-reducing performance.

Description

technical field [0001] The invention relates to a sulfur-loaded catalytic cracking gasoline hydrogenation desulfurization upgrading catalyst and a preparation method, mainly preparing uniformly dispersed zinc-aluminum with high specific surface area through non-constant pH alternate titration of aluminum-containing sodium carbonate solution and zinc-containing solution The layered material, which is combined with the molecular sieve material to support sulfur-containing metal active components to prepare a catalyst, can be used for hydrodesulfurization of catalytic cracking gasoline and reduction of olefins. Background technique [0002] Due to the complexity of sources, the properties of FCC gasoline in my country vary greatly. Especially compared to foreign gasoline, the general sulfur content is 100-500v%, and some raw materials are also high-sulfur and high-olefin raw materials, the sulfur content is above 500mg / kg, and the olefin content exceeds 40%. Selective hydrodes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48B01J29/85C10G49/08
CPCB01J29/48B01J29/85B01J2229/183C10G49/08C10G2300/1037C10G2300/104C10G2300/1044C10G2300/202
Inventor 吴杰高源李自夏李景锋王兴梅王廷海向永生姚文君刘蕾
Owner PETROCHINA CO LTD
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