Method of producing aromatic hydrocarbon through catalytic conversion of organic oxides

A technology of organic oxides and catalytic conversion, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, organic chemistry, chemical recovery, etc., can solve the problems of catalyst loss, catalyst activity reduction, catalyst hydrothermal deactivation, etc., to reduce catalyst Loss and operating costs, reduced pipeline and equipment wear, reduced hydrothermal deactivation effects

Active Publication Date: 2016-10-05
SINOPEC ENG +1
View PDF15 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents also focus on investigating the influence of different catalyst compositions and the modification of rare metals and rare earth metals on the aromatization process. CN 1880288A and CN 101823929 B mainly propose the influence of cyclic aromatization of reaction products on the yield of aromatic hydrocarbons, but these patents still A reaction regeneration system that does not involve organic oxides to aromatics
[0006] Chinese patent CN 101244969 A discloses a device and method for continuous aromatization and catalyst regeneration, the device includes an aromatization fluidized bed and a fluidized bed for continuous catalyst regeneration and is arranged between the two fluidized beds The pipelines and solid conveying devices used for catalyst transportation, but the patent does not propose the specific form of the regeneration system, and there are so

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
  • Method of producing aromatic hydrocarbon through catalytic conversion of organic oxides
  • Method of producing aromatic hydrocarbon through catalytic conversion of organic oxides
  • Method of producing aromatic hydrocarbon through catalytic conversion of organic oxides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] like figure 1 As shown in the system for producing aromatics by catalytic conversion of organic oxides, the process and operating conditions of the first embodiment of the method for producing aromatics by catalytic conversion of organic oxides of the present invention are as follows:

[0078] According to the method of the present invention, the catalyst circulation between the reactor and the regenerator is set up. The catalyst is a modified ZSM-5 molecular sieve catalyst (synthesized and produced by a research institute of Sinopec, the same below), and the raw material is industrial methanol. The heating temperature is 180°C; the reaction temperature is 490°C, and the pressure in the dilute phase section of the reactor and the top of the first regenerator is 0.2MPa(g). Gas-phase methanol enters the bottom of the dense-phase bed reaction section from the feed distribution plate, fully contacts and reacts with the regenerated catalyst from the second regenerator, and t...

Embodiment 2

[0085] like figure 2 The process and operating conditions of the second embodiment of the method for producing aromatics by catalytic conversion of organic oxides in the system shown in the present invention are as follows:

[0086] According to the method of the present invention, the catalyst circulation between the reactor and the regenerator is set up, the catalyst is a ZSM-5 molecular sieve catalyst, the raw material is industrial methanol, and the feed preheating temperature is 160 ° C; the reaction temperature is 470 ° C, the dilute phase section of the reactor and The top pressure of the first regenerator is 0.15MPa(g). Gas-phase methanol enters the bottom of the dense-phase bed reaction section from the feed distribution plate, fully contacts and reacts with the regenerated catalyst from the second regenerator, and the gas and catalyst move upward along the flow and react in the entire dense-phase bed reaction section , the mass space velocity of methanol is 0.5h -...

Embodiment 3

[0093] like image 3 The process and operating conditions of the third embodiment of the method for producing aromatics by catalytic conversion of organic oxides in the system shown in the present invention are as follows:

[0094] According to the method of the present invention, the catalyst circulation between the reactor and the regenerator is set up, the catalyst is a ZSM-5 molecular sieve catalyst, the raw material is industrial methanol, and the feed preheating temperature is 200 ° C; the reaction temperature is 490 ° C, the dilute phase section of the reactor and The top pressure of the first regenerator is 0.3MPa(g). Gas-phase methanol enters the bottom of the dense-phase bed reaction section from the feed distribution plate, fully contacts and reacts with the regenerated catalyst from the second regenerator, and the gas and catalyst move upward along the flow and react in the entire dense-phase bed reaction section , methanol mass space velocity 2.0h -1 .

[0095]...

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 method of producing aromatic hydrocarbon through catalytic conversion of organic oxides. The method includes the steps of: a) contacting the organic oxides in a dense-phase bed reaction section with a regenerated catalyst from a second regenerator to perform an aromatization reaction; b) discharging the reaction product from a reactor dilute-phase section, wherein to-be-regenerated catalyst successively passes through a first regenerator and the regenerator and then is fed back to the reactor for the reaction. The method has safe and stable process, achieves continuous operation, reduces usage amount of oxygen-containing gas for coking, catalyst loss and hydrothermal deactivation, is low in operation cost and has low environment pollution.

Description

technical field [0001] The invention relates to a method for preparing aromatics by catalytic conversion of organic oxides. Background technique [0002] Aromatics is an important organic chemical basic raw material, among which benzene, toluene and xylene (including o-xylene, m-xylene and p-xylene) are widely used, and their end products are used in synthetic resin, synthetic fiber, synthetic rubber, Coatings, dyes and pharmaceuticals and other fields. With the development of my country's economy and society, the demand for aromatics is also increasing. At present, the annual consumption of aromatics in my country exceeds 20 million tons, but half of them need to be imported from abroad. [0003] Benzene, toluene and xylene mainly come from the petrochemical industry. The aromatics produced by domestic petrochemical routes account for more than 85% of the total aromatics production. The production technologies mainly include: naphtha catalytic reforming, ethylene cracking ...

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): C07C1/20C07C15/04C07C15/06C07C15/08
CPCY02P20/584
Inventor 吴雷江盛阳余龙红程建民杨启业段丹黄泽川
Owner SINOPEC ENG
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