Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A kind of synthesis method of fixed bed low temperature methanol with heat and mass transfer catalysis triple effect

A technology of low-temperature methanol and synthesis methods, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of poor mass transfer effect, unfavorable, low ratio, etc., achieve mass transfer effect improvement, heat extraction The effect of improving the effect and stabilizing the conversion rate

Active Publication Date: 2016-04-06
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] known industrial CO 2 Conversion pathways include: (1) Catalytic reforming of methane and carbon dioxide to produce synthesis gas, however, this reaction needs to be carried out at high temperature (>650°C), and the catalyst is easily deactivated by sintering
(2) CO 2 with liquid NH 3 The reaction produces urea, but the addition of nitrogen makes the downstream product unsuitable for energy applications (NO x freed)
However, the slurry bed low-temperature methanol synthesis process has the following disadvantages (1) CO in the synthesis gas 2 (2) The effect of alcohol solvent as a heat extraction agent is limited; (3) The mass transfer effect is poor, and the product and solvent are mixed together, which is not conducive to the positive direction of the reaction

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 kind of synthesis method of fixed bed low temperature methanol with heat and mass transfer catalysis triple effect
  • A kind of synthesis method of fixed bed low temperature methanol with heat and mass transfer catalysis triple effect
  • A kind of synthesis method of fixed bed low temperature methanol with heat and mass transfer catalysis triple effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0020] Design of low-temperature methanol synthesis pathway, this pathway mainly includes the following steps:

[0021] CO 2 +1 / 2H 2 +Cu=HCOOCu...................(1);

[0022] HCOOCu+ROH=HCOOR+CuOH..........(2);

[0023] HCOOR+2H 2 =ROH+CH 3 OH................................(3);

[0024] CuOH+1 / 2H 2 =H 2 O+Cu................................(4);

[0025] CO 2 +3H 2 =CH 3 OH+H 2 O................................(5);

[0026] Cu represents the active center Cu from the copper-based catalyst 0 or Cu 1+ . ROH is the alcohol solvent used, which can be methanol, ethanol, propanol, 2-propanol, n-butanol and butanol isomers, etc. ROH is recycled in the reaction system without consumption. h 2O, as a by-product, was dissolved by the alcohol solvent during the reaction and carried out of the reactor. In the design of the whole react...

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

A method for synthesizing low-temperature methanol in a fixed-bed with heat-mass-transfer catalysis, involving a method for synthesizing methanol. In this method, the alcohol solution acts as a homogeneous catalyst to participate in and catalyze the reaction, and acts as a nucleophile to attack the formate adsorbed on the surface of the catalyst. , to generate formate; at the same time, the alcohol solution acts as a mobile phase to quickly remove heat. The methanol synthesis reaction is a strong exothermic reaction, and the low temperature is conducive to the positive direction of the methanol synthesis reaction; in addition, the alcohol solution is used as a mass transfer medium. The reaction product methanol and by-product water are taken away from the surface of the catalyst and the reactor to make the reaction proceed smoothly. The alcohol used may be methanol, ethanol, propanol, 2-propanol, butanol and isomers of butanol and the like. The present invention systematically studies the synthesis gas with CO2 content of 0-60%. At 180°C and 5.0MPa, with 2-propanol as solvent, the conversion rate of total carbon is stable above 80%, and the selectivity of methanol is high. at 95%.

Description

technical field [0001] The invention relates to a method for synthesizing methanol, in particular to a method for synthesizing low-temperature methanol in a fixed-bed with heat-mass-transfer catalysis triple action. Background technique [0002] Rapid development of a number of strategic emerging industries such as clean energy, energy conservation and environmental protection (page 4 of the 2013 Government Work Report, P4); solidly promote energy conservation, emission reduction and ecological environment protection (P5); establish an ecological compensation system, develop emission rights and carbon Emissions trading pilot (P10). In the suggestions for this year's government work, it is mentioned that we must adhere to the basic national policy of saving resources and protecting the environment, and strive to promote green development, circular development, and low-carbon development. Vigorously promote the conservation and recycling of energy resources, control the total...

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): C07C21/04C07C29/151
CPCY02P20/52
Inventor 石磊椿范立肖林久
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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
Eureka Blog
Learn More
PatSnap group products