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

Heavy aromatic oil hydrofining catalyst and method for producing BTX from heavy aromatic oil

A technology for hydrofining and aromatic oil, applied in the fields of hydrofining aromatics, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems affecting BTX yield and catalyst service life, etc. , to achieve the effects of improving comprehensive economy, saving energy consumption, and increasing BTX yield

Active Publication Date: 2022-05-06
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of this macroporous nano-beta molecular sieve is about 50-100nm, and the particle size is a bit too large. It may cause two or more aromatics to reach the acid center through the pores at the same time due to too large pores, causing polymerization to form coke and affecting BTX production. rate and service life of the catalyst
[0004] At present, the above-mentioned technical route is mostly used for the production of triphenyl products for heavy aromatics (Liu Yi et al., "Analysis of Lightweight Technology and Prospects for Heavy Aromatics", "Technology Application and Research", 2017.06, P40-P41). Method Distillation / extraction / hydrogenation combined technical route has not been reported yet

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
  • Heavy aromatic oil hydrofining catalyst and method for producing BTX from heavy aromatic oil
  • Heavy aromatic oil hydrofining catalyst and method for producing BTX from heavy aromatic oil
  • Heavy aromatic oil hydrofining catalyst and method for producing BTX from heavy aromatic oil

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Another aspect of the embodiments of the present invention provides a method for preparing the aforementioned heavy aromatic oil hydrotreating catalyst, which includes:

[0033] 1) mixing and roasting the natural sponge powder and aluminum hydroxide dry rubber powder to obtain the carrier;

[0034] 2) impregnating the carrier in an impregnating solution, followed by drying and roasting to obtain the heavy aromatic oil hydrofining catalyst, the impregnating solution includes an aqueous solution of a precursor of a metal active component, and the precursor The aqueous solution also contains a nonionic surfactant, wherein the precursor of the metal active component is selected from water-soluble compounds containing metal elements of Group VIB and / or Group VIII.

[0035] In some more specific embodiments, the step 1) specifically includes: drying and pulverizing the natural sponge to obtain a natural sponge powder, then mixing the dry aluminum hydroxide powder with the nat...

Embodiment 1

[0078] First, 3.0 g of natural sponge is blast-dried, the blower wind speed is 4 m / s, the drying temperature is 55 ° C, the blast drying time is 15 hours, and then pulverized to obtain a natural sponge powder with a particle size of 1500 mesh; Mix well with 160g of aluminum hydroxide dry rubber powder (80% on a dry basis). During the mixing process, add extrusion aids, such as citric acid, in an amount that meets the needs of the carrier; after mixing evenly, the mixture is dried and roasted Get the carrier. The drying temperature is 120° C., and the drying time is 5 hours; the calcination temperature is 500° C., and the calcination time is 1 hour.

[0079] To the prepared tungsten-cobalt impregnation solution, the concentration is 23.0g metal (calculated as oxide, tungsten / cobalt ratio 3:1) / 100mL solution, 100ml in total, add lauryl alcohol polyether, the amount added is based on the total mass of the carrier Add 2% to 10% of the solution to make an aqueous solution, impregn...

Embodiment 2

[0081] First, 3.6g of natural sponge is blast-dried, the blower wind speed is 3 m / s, the drying temperature is 50°C, and the blast drying time is 10h, and then pulverized to obtain a natural sponge powder with a particle size of 1000 mesh; the natural sponge powder is dried at room temperature Mix well with 180g aluminum hydroxide dry rubber powder (dry basis is 70%). During the mixing process, add extrusion aids, such as citric acid, in an amount to meet the carrier molding; after mixing evenly, the mixture is dried and roasted Get the carrier. Wherein the drying temperature is 160°C, and the drying time is 7 hours; the calcination temperature is 400°C, and the calcination time is 15 hours.

[0082] To the molybdenum-cobalt impregnation solution that has been prepared above, the concentration is 26.0g metal (calculated as oxide, molybdenum / cobalt ratio 3:1) / 100mL solution, add 100ml of lauryl alcohol polyether, the amount added is based on the total mass of the carrier Add 2...

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a heavy aromatic oil hydrofining catalyst and a method for producing BTX from heavy aromatic oil. The heavy aromatic oil hydrofining catalyst comprises a metal active component and a carrier for loading the metal active component, the carrier is formed by mixing and roasting natural sponge powder and aluminum hydroxide dry glue powder, and the metal active component comprises a metal oxide; the pore volume of the heavy aromatic oil hydrofining catalyst is 0.9-1.3 ml / g, the specific surface area is 150-350 m < 2 > / g, and the crushing strength is 300 N.cm <-1 > or above. The prepared heavy aromatic oil hydrofining catalyst has the advantages of large specific surface area and good activity; and meanwhile, the low-cost and inferior heavy aromatic oil is converted into liquefied gas and triphenyl products with high added values by the method, so that the comprehensive economy of the reforming device is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of processing methods for heavy aromatic oil, and in particular relates to a heavy aromatic oil hydrotreating catalyst and a method for producing BTX from heavy aromatic oil. Background technique [0002] Heavy aromatic oil mainly comes from catalytic reforming and ethylene cracking units. Reform C 9 + Heavy aromatics account for about 15% to 20% of the processing capacity of reforming units. The domestic reforming processing capacity has exceeded 100 million tons per year. Reforming C 9 + The production capacity of heavy aromatics is 15-20 million tons / year. cleavage C 9 + Heavy aromatics account for 10% to 20% of the production capacity of ethylene units. Domestic ethylene cracking units have a production capacity of more than 20 million tons per year. Cracking C 9 + The production capacity of heavy aromatics is 1-2 million tons / year. In the future, with the construction of aromatics complexes and...

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): B01J23/888B01J23/882B01J23/883B01J35/10C10G45/50
CPCB01J23/888B01J23/882B01J23/883C10G45/50B01J35/61B01J35/63B01J35/638B01J35/615Y02P20/52
Inventor 许杰尹宏峰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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