Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A preparation method of a hierarchical porous carbon-based catalyst for catalytically upgrading coal tar

A carbon-based catalyst and catalytic upgrading technology, applied in physical/chemical process catalysts, catalytic cracking, chemical instruments and methods, etc., can solve the problems of unfavorable reactant diffusion active site contact, complex production process, catalyst deactivation and other problems , to achieve the effects of low preparation cost, simple production process, and promotion of catalytic cracking

Active Publication Date: 2022-02-08
TAIYUAN UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the present invention, most of the existing carbon-based catalysts for catalyzing and modifying coal tar are microporous materials, which are not conducive to the diffusion of reactants in the pores of the catalyst and the contact with the active sites, and also easily lead to the inactivation of the catalyst due to the blockage of the pores; Moreover, the production process of traditional hierarchical porous carbon materials is complex and the production cost is high

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
  • A preparation method of a hierarchical porous carbon-based catalyst for catalytically upgrading coal tar
  • A preparation method of a hierarchical porous carbon-based catalyst for catalytically upgrading coal tar
  • A preparation method of a hierarchical porous carbon-based catalyst for catalytically upgrading coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) The long-flame coal Wucaiwan coal in the Wucaiwan area of ​​Xinjiang was selected as the raw material. After the coal sample was crushed, ground and sieved, the sample with a particle size of less than 0.178mm was selected for the experiment.

[0037] (2) The raw coal of Wucai Bay is treated with acid elution and demineralization. Stir 60g of coal sample with 600mL of hydrochloric acid with a concentration of 6mol / L at 25°C for 12h, filter, wash and dry, then soak the coal sample with 600mL of hydrofluoric acid with a concentration of 7.6mol / L at 25°C Stir for 12 hours, filter, wash and dry to obtain demineralized Wucaiwan coal.

[0038] (3) Weigh 11g demineralized Wucaiwan coal and 0.7793g Ca(NO 3 ) 2 4H 2 O was mixed in a beaker, and deionized water was added to submerge the sample. After stirring at 25 °C for 12 h, the resulting mixture was dried at 70 °C to obtain demineralized Wucaiwan coal loaded with calcium nitrate.

[0039] (4) Put the demineralized Wuc...

Embodiment 2

[0044] (1) The long-flame Yining coal in the Yining area of ​​Xinjiang was selected as the raw material. After the coal sample was crushed, ground, and sieved, the sample with a particle size of less than 0.178 mm was selected for the experiment.

[0045] (2) Carry out acid elution mineral treatment on Yining raw coal. Stir 40 g of coal sample with 400 mL of hydrochloric acid with a concentration of 6 mol / L at 25°C for 12 hours, filter, wash, and dry, then soak the coal sample washed with hydrochloric acid and 400 mL of hydrofluoric acid with a concentration of 7.6 mol / L at 25 °C Stir at ℃ for 12 hours, filter, wash and dry to obtain demineralized Yining coal.

[0046] (3) Weigh 9g of demineralized Yining coal and 0.4757g of Ca(CH 3 COO) 2 ·H 2 O was mixed in a beaker, and deionized water was added to submerge the sample. After stirring at 25 °C for 12 h, the resulting mixture was dried at 70 °C to obtain demineralized Yining coal loaded with calcium acetate.

[0047] (4) ...

Embodiment 3

[0053] (1) The long-flame coal Wucaiwan coal in the Wucaiwan area of ​​Xinjiang was selected as the raw material. After the coal sample was crushed, ground and sieved, the sample with a particle size of less than 0.178mm was selected for the experiment.

[0054] (2) The raw coal of Wucai Bay is treated with acid elution and demineralization. Stir 60g of coal sample with 600mL of hydrochloric acid with a concentration of 6mol / L at 25°C for 12h, filter, wash and dry, then soak the coal sample with 600mL of hydrofluoric acid with a concentration of 7.6mol / L at 25°C Stir for 12 hours, filter, wash and dry to obtain demineralized Wucaiwan coal.

[0055] (3) Weigh 12g of demineralized Wucaiwan coal and 0.2223g of Ca(OH) 2 Mix in a beaker, add deionized water to immerse the sample, stir at 25°C for 12h, and dry the resulting mixture at 70°C to obtain demineralized Wucaiwan coal loaded with calcium hydroxide.

[0056] (4) The demineralized Wucaiwan coal loaded with calcium hydroxide...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

A method for preparing a hierarchically porous carbon-based catalyst for catalytically upgrading coal tar, belonging to the technical field of preparation of catalytically modifying coal tar catalysts, can solve the problem of existing microporous carbon-based catalysts due to their small pore diameters. The diffusion resistance of the tar reactant is relatively large, which is not conducive to the progress of the catalytic reaction. Firstly, the coal with low metamorphism degree is activated by water vapor under the catalysis of calcium-containing minerals to obtain semi-coke with hierarchical pore structure, and then the hierarchical porous semi-coke is used as the carrier to load active metals to prepare carbon-based carbon with hierarchical pore structure. catalyst. The catalyst has well-developed micropore and mesopore structure, which is conducive to the diffusion of heavy components in the tar in the pores of the catalyst and the contact with the active sites, and shows a good catalytic effect in catalytically modified coal tar. ,with broadly application foreground.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalytically modified coal tar catalysts, and in particular relates to a preparation method of a hierarchical porous carbon-based catalyst used for catalytically modified coal tar. Background technique [0002] Coal pyrolysis is the basic stage of coal thermochemical transformation, and the tar produced during coal pyrolysis is a viscous mixture of hydrocarbons. The light components in coal tar are important chemical raw materials, many of which cannot or cannot be economically obtained from the petroleum industry. However, the heavy components in the coal tar produced by the coal chemical industry are as high as more than 50%. Due to the high boiling point of the heavy components, the separation is difficult, and the degree of processing and utilization of the heavy components is low. This not only causes a waste of resources, but also easily lead to environmental pollution. [0003] Ca...

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 Patents(China)
IPC IPC(8): B01J23/78B01J23/28B01J35/10C10G11/02
CPCC10G11/02B01J23/28B01J23/78C10G2400/30B01J35/695
Inventor 鲍卫仁吕鹏李凡闫伦靖高美琪周亚杰
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com