Coal tar hydrogenation pretreatment catalyst and preparation method thereof

A technology for hydrotreating pretreatment and catalyst, which is applied in physical/chemical process catalysts, chemical instruments and methods, and hydrogenation of aromatic hydrocarbons, etc., can solve problems such as good diffusion performance, achieve good diffusion performance, protect pore structure, reduce The effect of roasting energy consumption

Active Publication Date: 2020-09-04
CCTEG CHINA COAL RES INST
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore volume of the macropores of 20-30 nm or more in the catalyst prepared by the method of the present invention accounts for 45-70% of the total pore volume, has good diffusion performance, and effectively solves the problem of diffusion and hydrogenation conversion of a large amount of asphaltene macromolecular substances in coal tar to the inside of the catalyst

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
  • Coal tar hydrogenation pretreatment catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Phosphorus-containing pseudo-boehmite M is prepared, and M contains 1.04% of P in its total weight. The specific surface area and pore volume of phosphorus-containing pseudo-boehmite M were measured by nitrogen adsorption method, and the specific surface area of ​​M was 245m 2 / g, the pore volume is 1.4mL / g, and the most probable pore diameter is 20.8nm.

[0035] Weigh 100g of the above-mentioned pseudo-boehmite M (dry basis), add 3g of scallop powder, dissolve 1.2g of boric acid and 0.6g of polyoxyethylene ether in 110g of deionized water, add to the aforementioned materials, knead and extrude on a single screw Extrude into a cylindrical shape with a diameter of 2.5mm on the machine, dry at 105°C for 4 hours, and then bake at 800°C for 4 hours to obtain an alumina carrier. The preparation contains (6.2gMoO 3 +4.8gNiO) / 100mL metal impregnation solution, impregnate the obtained carrier by saturated impregnation, dry at 100°C for 4h, and roast at 550°C for 4h to prepare...

Embodiment 2

[0037] Phosphorus-containing pseudo-boehmite M is prepared, and M contains 0.89% of P in its total weight. The specific surface area and pore volume of phosphorus-containing pseudo-boehmite M were measured by nitrogen adsorption method, and the specific surface area of ​​M was 224m 2 / g, the pore volume is 1.5mL / g, and the most probable pore diameter is 19.6nm.

[0038] Weigh 100g of the above-mentioned pseudo-boehmite M (dry basis), add 3g of scallop powder and 1.0g of boron oxide, dissolve 1.7g of polyoxyethylene ether in 107g of deionized water, add to the aforementioned materials, knead and extrude in a single-screw Extruded into a clover shape with a diameter of 3.0mm on a bar machine, dried at 120°C for 3 hours, and then roasted at 600°C for 5 hours to obtain an alumina carrier, which was prepared with (8.3gWO 3 +3.6gNiO) / 100mL metal impregnation solution, impregnate the obtained carrier by saturated impregnation, dry at 105°C for 4h, and roast at 600°C for 4h to prepar...

Embodiment 3

[0040]Phosphorus-containing pseudo-boehmite M is prepared, and M contains 2.01% of P in its total weight. The specific surface area and pore volume of phosphorus-containing pseudo-boehmite M were measured by nitrogen adsorption method, and the specific surface area of ​​M was 230m 2 / g, the pore volume is 1.5mL / g, and the most probable pore diameter is 19.5nm.

[0041] Weigh 100g of the above-mentioned pseudo-boehmite M (dry basis), add 3g of scallop powder, dissolve 1.6g of boric acid and 0.8g of polyoxyethylene ether in 110g of deionized water, add to the aforementioned materials, knead and extrude on a single screw Extruded into a four-leaf clover shape with a diameter of 3.0mm on the machine, dried at 110°C for 4 hours, and then calcined at 750°C for 4 hours to obtain an alumina carrier, which was prepared with (6.2gMoO 3 +2.6gNiO) / 100mL metal impregnation solution, impregnate the obtained carrier by saturated impregnation, dry at 90°C for 6h, and roast at 500°C for 5h to...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a coal tar hydrogenation pretreatment catalyst and a preparation method thereof. The pore volume of the catalyst is 0.9-1.5 mL / g, the specific surface area is 200-300 m < 2 > / g, the most probable pore diameter is 15-30 nm, and the pore volume of macropores with the pore size of 20-30 nm or above accounts for 45-70% of the total pore volume. Aluminum oxide is used as a carrier, VIB and VIII metal elements are used as active components, a phosphorus element is used as an auxiliary agent, the weight content of the active components in the hydrogenation pretreatment catalyst is 0.4%-10% by metal, and the weight content of the auxiliary agent phosphorus in the hydrogenation pretreatment catalyst is 0.1%-10% by element. The coal tar hydrogenation pretreatment catalyst provided by the invention has the advantages of large pore volume, large pore diameter, excellent diffusivity and higher demetalization and hydrogenolysis asphaltene activity.

Description

technical field [0001] The invention relates to a hydrogenation pretreatment catalyst and a preparation method thereof, in particular to a large pore diameter and large pore volume coal tar hydrogenation pretreatment catalyst and a preparation method thereof. Background technique [0002] Coal tar is a valuable chemical raw material obtained in the process of coal pyrolysis and gasification. With the rapid development of low-rank coal pyrolysis technology, the production of medium and low temperature coal tar has increased significantly. Medium and low temperature coal tar contains more alkanes, cycloalkanes and less condensed ring aromatics, and is suitable for the production of clean fuel oil and high value-added chemicals through hydrogenation. [0003] Residual oil is the most difficult raw material to process among petroleum-based heavy oils. It contains a large amount of colloids and asphaltenes. This part of the substance has a large molecular weight, complex structu...

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): B01J27/19B01J27/188B01J35/10C10G45/08C10G45/50
CPCB01J27/19B01J27/188B01J35/1061B01J35/1033C10G45/08C10G45/50C10G2300/201C10G2300/202Y02P20/52
Inventor 吴艳马博文李文博陈贵锋常秋连李军芳李艳芳熊银伍
Owner CCTEG CHINA COAL RES INST
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