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Sulfur-carrying hydrodesulfurization upgrading catalyst and preparation method

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

Active Publication Date: 2017-07-07
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-carrying hydrodesulfurization upgrading catalyst and preparation method
  • Sulfur-carrying hydrodesulfurization upgrading catalyst and preparation method
  • Sulfur-carrying hydrodesulfurization upgrading catalyst and preparation method

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, and the aluminum-containing solution is added dropwise for the last time 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 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 (C...

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 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-carrying catalytic cracking gasoline hydrodesulfurization and upgrading catalyst and a preparation method thereof. It mainly prepares uniformly dispersed, high specific surface area zinc aluminum by alternate titration of an aluminum-containing sodium carbonate solution and a zinc-containing solution with non-constant pH. A layered material, which is combined with a molecular sieve material to support sulfur-containing metal active components to prepare a catalyst that 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 raw materials are also high-sulfur, high-olefin raw materials, the sulfur content is above 500mg / kg, and the olefin content exceeds 40%. Selective hydrodesulfu...

Claims

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Application Information

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Patent Type & Authority Applications(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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