Preparation method and use method of two-stage bed reaction catalyst used in coal tar pitch lightening process

A technology of lightening and coal tar pitch, which is applied in the field of preparation of two-stage bed reaction catalysts, can solve the problems such as coal tar pitch hydrocracking that has not been used and has not been effectively realized, achieves considerable yield, and increases lightening and isomerization. The effect of improving yield and small loss

Active Publication Date: 2011-04-13
JIANGSU TIANNUO NEW MATERIAL TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Whether it is the commonly used coal tar pitch processing and utilization method or the relatively mature medium-pressure hydrocracking technology, coal tar pitch hydrocracking has not been effectively realized. Now coal tar pitch hydrogenation technology is difficult to achieve the purpose of deep cracking, only mild cracking Hydrogen, and the existing hydrocatalytic deep cracking technology, coal tar pitch has not been used as raw materials, coupled with the huge resources of coal tar pitch and the broad prospects for application, it is necessary to study the deep coal tar pitch hydrocracking technology, in order to provide subsequent deep processing for various A high value-added aromatic hydrocarbon chemical product, which alleviates the current situation of oil shortage and is beneficial to the clean utilization of coal

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
  • Preparation method and use method of two-stage bed reaction catalyst used in coal tar pitch lightening process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) SiO 2 / Al 2 o 3The ZSM-5 molecular sieve with a molar ratio of 25 was evenly mixed with the molecular sieve through an alumina binder, and then a certain amount of 3 wt% dilute nitric acid was added and kneaded evenly, then extruded and formed, and dried at 110°C for 2 hours and dried at 110°C for 2 hours. After calcination at 510°C for 2 hours, impregnated with 7.5wt% nickel nitrate solution, dried at 110°C for 2 hours, and then fired at 460°C for 2 hours, the metal nickel oxide loading modification was completed, and 4.4wt% Ni / ZSM was obtained. -5, recorded as catalytic component 1; 2) Dry 14-mesh silica gel at 120°C for 2 hours, weigh 10 g of the dried silica gel carrier and place it in a dry branch bottle, connect a separatory funnel and a vacuum pump, and check the seal properties, vacuumize, impregnate with 10wt% ammonium molybdate solution, dry at 110°C for 2 hours, and then bake at 420°C for 2 hours to complete the metal molybdenum oxide loading modificatio...

Embodiment 2

[0023] 1) SiO 2 / Al 2 o 3 The Y molecular sieve with a molar ratio of 60 was mixed evenly with the molecular sieve through the alumina binder, and then a certain amount of 3 wt% dilute nitric acid was added and kneaded evenly, and then extrusion molding was carried out. After molding, it was dried at 110°C for 2 hours and heated at 530°C After roasting at low temperature for 2 hours, impregnate with 7.0wt% ammonium molybdate solution, dry at 110°C for 2 hours, and then bake at 460°C for 2 hours to complete the metal molybdenum oxide loading modification and obtain catalytic components 1-4.3 wt%. Mo / Y; 2) Molecular sieve MCM-41 was dried at 100°C for about 2 hours, impregnated with 10.0wt% nickel nitrate solution, dried at 110°C for 2 hours, and then calcined at 500°C for 2 hours to complete the metal Nickel oxide was loaded and modified to obtain catalytic component 2—7.3wt% Ni / MCM-41; 3) The above two modified catalytic components 1 and 2 with different functions were colle...

Embodiment 3

[0025] 1) SiO 2 / Al 2 o 3 The Beta molecular sieve with a molar ratio of 23 is mixed evenly with the molecular sieve through the alumina binder, and then a certain amount of 3wt% dilute nitric acid is added and kneaded evenly, and then extruded, dried at 120°C for 2 hours and dried at 520°C After calcination for 2 hours, it was impregnated with 4.0wt% nickel nitrate solution, dried at 110°C for 2 hours, and then fired at 460°C for 2 hours to complete the metal nickel oxide loading modification and obtain 2.9wt% Ni / Beta. 2) Dry the macroporous alumina at 120°C, impregnate it with 7.0wt% ammonium molybdate solution, dry it at 110°C for 2 hours, and then bake it at 500°C for 2 hours to complete the metal molybdenum oxide loading modification and obtain 5.9wt% Mo / Al 2 o 3 . 3) The above two modified catalytic components 1 and 2 with different functions are collectively referred to as catalyst III.

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

No PUM Login to view more

Abstract

The invention relates to a preparation method and use method of a two-stage bed reaction catalyst used in the coal tar pitch hydrocracking lightening process. The use method of the catalyst comprises the following specific steps: the mixture of coal tar pitch and toluene is used as the raw material and a fixed bed reactor is adopted to perform the efficient combinatorial catalysis through the two-stage bed reaction catalyst under the conditions that the reaction temperature is 380-500 DEG C, the reaction pressure is 5.0-12.0MPa and the reaction air speed is 0.2-5h<-1>, thus realizing the lightening process of the hydrocracking two-stage reaction of coal tar pitch. The two-stage bed combined catalyst in the invention consists of two catalytic components with different functions at a ratio of (1:10)-(10:2). By using the method in the invention in the coal tar pitch hydrocracking lightening reaction process, the reaction activity is higher, the stability is better, the production technology can be effectively simplified, and the production energy consumption, the material consumption and the cost can be reduced.

Description

technical field [0001] The invention relates to a preparation method and a use method of a second-stage bed reaction catalyst used in the coal tar pitch hydrocracking lightening process. Specifically, a mixture of coal tar pitch and toluene is used as a raw material, and a fixed-bed reactor is used to realize the hydrocracking lightening reaction of coal tar pitch through the high-efficiency catalytic effect of the combined catalyst of the two-stage bed. When the method is used in the coal tar pitch hydrocracking lightening reaction process, not only the reaction activity is high, the lightening yield is high, but also the production process can be effectively simplified, and the energy consumption, material consumption and cost of production can be reduced. Background technique [0002] my country is a big coal coking country, and coal tar pitch accounts for more than half of the total coal tar. At present, coal tar pitch is mainly used in the production of modified asphal...

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): B01J29/48B01J29/80B01J29/78B01J29/24C10G47/20
Inventor 朱志荣李富娟
Owner JIANGSU TIANNUO NEW MATERIAL TECH
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