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

Novel method for high-gravity reinforced conversion of coal-based chemical raw material

A chemical raw material and supergravity technology, which is applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical processes, etc., can solve the problems of high catalyst regeneration frequency, increased catalyst cost, high catalyst development cost, etc. problems, to achieve the effects of reducing by-product formation, inhibiting secondary reactions, and reducing energy consumption

Inactive Publication Date: 2012-05-23
BEIJING UNIV OF CHEM TECH
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fluidized bed or slurry bed has strict requirements on the strength, wear resistance and certain sieving particle size of the catalyst, thus increasing the cost of the catalyst
In addition, regardless of the fixed bed or fluidized bed reactor, the frequency of catalyst regeneration is very high
Moreover, the product distribution is mainly determined by the performance of the catalyst. The catalyst requires a specific synthesis method and modification to achieve the desired product yield, which makes the development cost of the catalyst 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
  • Novel method for high-gravity reinforced conversion of coal-based chemical raw material
  • Novel method for high-gravity reinforced conversion of coal-based chemical raw material
  • Novel method for high-gravity reinforced conversion of coal-based chemical raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The methanol-to-olefins reaction is carried out using a high-gravity reactor. Methanol was used with a purity of 99%. The commercially available SAPO-34 molecular sieve without any modification was put into the mesh support as the methanol-to-olefins catalyst, and fixed on the rotor of the high-gravity reactor.

[0029] The process conditions for carrying out methanol to olefins reaction are as follows:

[0030] Methanol gas space velocity: 2500h -1 , Reaction temperature: 370°C, Reaction pressure: 0.1MPa

[0031] Catalyst bed speed: 500-1500rpm

[0032] High gravity enhanced methanol to olefins reaction results:

[0033]

Embodiment 2

[0041] The reaction of dimethyl ether to olefins was carried out in a high gravity reactor. A commercially available ZSM-5 molecular sieve without any modification was put into a mesh support as a dimethyl ether-to-olefins catalyst, and fixed on the rotor of the high-gravity reactor.

[0042] The processing conditions for carrying out the reaction of dimethyl ether to olefins are as follows:

[0043] Dimethyl ether space velocity: 2500h -1 , Reaction temperature: 370°C, Reaction pressure: 0.1MPa

[0044] Catalyst bed speed: 500-1500rpm

[0045] The results of high gravity enhanced dimethyl ether to olefins reaction:

[0046]

Embodiment 3

[0048] One-step synthesis of dimethyl ether from syngas using a supergravity reactor. The physical mixture of commercially available methanol synthesis catalyst and ZSM-5 molecular sieve is used as a catalyst for the one-step synthesis of dimethyl ether from synthesis gas, which is placed in a mesh support and fixed on the rotor of the high-gravity reactor.

[0049] The process conditions for carrying out the reaction of syngas one-step system of dimethyl ether are as follows:

[0050] Synthetic gas air velocity: 2500h -1 , CO / H 2 =1 / 2 Reaction temperature: 270°C, reaction pressure: 5MPa, catalyst bed rotation speed: 500-1500rpm

[0051] The reaction results of one-step synthesis of dimethyl ether from syngas enhanced by high gravity:

[0052] CO conversion rate

[0053] Coal-based methanol to dimethyl ether (MTD) of the present invention, methanol to aromatics (MTA), coal-based dimethyl ether to aromatics (DTA), and coal-based methanol dimethyl ether mixture to o...

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 discloses a novel method for high-gravity reinforced conversion of a coal-based chemical raw material, which belongs to the technical field of high gravity. According to the method, a conversion reaction for a coal-based chemical raw material is carried out in a high-gravity reactor, and a catalyst bed is fixed on a rotor of a rotating packed bed and is always in a rotation state during the process of the reaction; through adjustment of the rotating speed of the rotor of the rotating packed bed, the mass transfer process of reaction products is reinforced, distribution of the reaction products is controlled, and selectivity of a target product is improved. The method provided in the invention carries out conversion reactions on chemical raw materials like coal-based syngas, methanol and dimethyl ether by using a rotating packed bed reactor and is a brand novel method for conversion of coal-based chemical raw materials.

Description

technical field [0001] The invention relates to a new method for supergravity-enhanced conversion of coal-based chemical raw materials, specifically, a method for converting coal-based chemical raw materials, including synthesis gas, methanol, and dimethyl ether, into dimethyl ether using a supergravity reactor , the reaction of alkenes and aromatics belongs to the technical field of high gravity. technical background [0002] One-step synthesis gas to dimethyl ether (STD), coal-based methanol to dimethyl ether (MTD), coal-based methanol to olefins (MTO), methanol to aromatics (MTA), and coal-based dimethyl ether to olefins (DTO), Coal-based dimethyl ether to aromatics (DTA) and coal-based methanol dimethyl ether mixture to olefins (DMTO) are important new C1 chemical processes. [0003] The above-mentioned processes in the early stage all used stationary reactors. Since the above conversion reactions are all exothermic reactions, the activity of the catalyst declines rapi...

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
IPC IPC(8): B01J8/10
CPCB01J19/1806B01J8/0214B01J8/10B01J2208/00539B01J2208/00557B01J2208/00884
Inventor 陈建峰张燚初广文
Owner BEIJING UNIV OF CHEM 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