Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method

A technology of desulfurization catalyst and alumina, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor desulfurization activity and stability, and achieve improved service life, good wear resistance, and reduced The effect of octane loss

Active Publication Date: 2020-05-08
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the problems of poor catalyst desulfurization activity and stability in the prior art, and provide a desulfurization catalyst with high desulfurization activity, low octane loss, high stability, long life and good wear resistance. Catalyst, its preparation method and method for hydrocarbon oil desulfurization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method
  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method
  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] The present invention also provides a method for preparing a desulfurization catalyst, the method comprising: (1) performing a precipitation reaction on a mixed solution obtained by mixing a silver-containing compound, a zinc-containing compound and a precipitating agent, filtering and drying the mixture obtained by the precipitation reaction and roasting to obtain a precipitated product; (2) contacting a silica source, an alumina source, a molecular sieve with an MFI structure, water and an acid solution to form a slurry, and mixing the precipitated product obtained in step (1) with the slurry to form carrier mixture; then molding, drying and roasting the carrier mixture to form a carrier; (3) introducing a compound containing an active metal to the carrier obtained in step (2) and drying and roasting to obtain a desulfurization catalyst precursor; the active The metal is at least one of cobalt, nickel, iron and manganese; (4) reducing the desulfurization catalyst precu...

Embodiment 1

[0089] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0090] (1) Precipitation product is prepared. 10.9 kg of zinc acetate dihydrate powder (produced by Beijing Chemical Plant, analytically pure), 0.72 kg of anhydrous silver acetate (Sinopharm Chemical Reagent Company, analytically pure) and 18 kg of deionized water were mixed, and dissolved completely after stirring for 30 minutes. The precipitated product obtained by adding 1.8 kg of ammonia water was filtered, dried at 150° C. for 2 hours, and then calcined at 500° C. for 1 hour to obtain the precipitated product C1.

[0091] The precipitated product C1 was subjected to fluorescence analysis and XRD determination. In the XRD spectrum (see figure 1 ) without Ag 2 The diffraction peak of O, and the standard diffraction peak of ZnO shifted to the right, where A 100 -B 100 = 0.31°, A 002 -B 002 = 0.32°, A 101 -B 101 =0.31°, indicating that the Ag i...

Embodiment 2

[0099] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0100] (1) Precipitation product is prepared. 14.0 kg of zinc nitrate hexahydrate (produced by Beijing Chemical Plant, analytically pure), 1.76 kg of silver nitrate powder (Sinopharm Chemical Reagent Company, analytically pure) and 18 kg of deionized water were mixed, and after stirring for 30 minutes, 2.0 kg of urea was added and heated to After treatment at 80°C for 2 hours, a white precipitate was obtained. After filtration, it was first dried at 150°C for 2 hours, and then calcined at 500°C for 1 hour to obtain the precipitated product C2.

[0101] The precipitated product C2 was subjected to XRD determination. In the XRD spectrum (see figure 1 ) without Ag 2 The diffraction peak of O, and the standard diffraction peak of ZnO shifted to the right, where A 100 -B 100 =0.37°, A 002 -B 002 = 0.35°, A 101 -B 101 =0.35°, indicating that the Ag in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a desulfurization catalyst and a preparation method thereof, and a hydrocarbon oil desulfurization method. The desulfurization catalyst is prepared from the following components in percentage by weight: 5-35% of silicon oxide source, 5-35% of aluminum oxide, 30-70% of zinc oxide, 2-15% of silver oxide, 1-20% of a molecular sieve with an MFI structure and 5-30% of an activemetal, wherein at least part of the silver oxide exists in a form of forming a zinc-silver composite metal oxide represented by a general formula AgxZn1-xO with the zinc oxide, x is greater than 0 andless than or equal to 0.24, x represents an atomic molar ratio, the active metal is at least one of cobalt, nickel, iron and manganese, and the sulfur capacity of the zinc-silver composite metal oxide represented by AgxZn1-xO is greater than or equal to 30%. The desulfurization catalyst prepared by adopting the ratio has the characteristics of high desulfurization activity, high stability, long service life and good wear resistance.

Description

technical field [0001] The invention relates to a desulfurization catalyst for hydrocarbon oil, in particular to a desulfurization catalyst, its preparation method and a method for desulfurization of hydrocarbon oil. Background technique [0002] The sulfur in the exhaust of automobile engines will inhibit the precious metals in the catalytic converter and cause irreversible poisoning, reducing the purification effect of the catalytic converter on automobile exhaust. Unpurified automobile exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, and these gases are likely to form photochemical smog under photocatalysis. [0003] Most of the sulfur in gasoline products in my country comes from thermally processed gasoline blending components (such as catalytically cracked gasoline), so the reduction of sulfur content in thermally processed gasoline will help reduce the sulfur content of gasoline products. my country's current gasoline product s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76C10G47/20
CPCB01J29/76C10G47/20C10G2300/1037C10G2300/104C10G2300/1044C10G2300/202C10G2300/70
Inventor 林伟宋烨王磊田辉平刘俊
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap