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

Method for producing synthetic gas through continuous catalysis of methane by oxygen-carrying membrane

A synthesis gas and oxygen-carrying technology, applied in chemical instruments and methods, inorganic chemistry, bulk chemical production, etc., can solve problems such as high equipment investment and energy consumption, increased separation cost, and serious carbon deposition effect, and reduce production cost, shorten the production cycle, and the effect of efficient methods

Inactive Publication Date: 2012-04-25
KUNMING UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam reforming process has high energy consumption, large investment and low production capacity, and the n(H 2 ) / n(CO)=3, suitable for ammonia synthesis, but not suitable for important industrial processes such as subsequent Fischer-Tropsch synthesis of methanol and hydrocarbons
The investment and energy consumption of carbon dioxide reforming and triple reforming equipment are relatively high, and the carbon deposition effect is serious, which restricts their development
The common deficiency of the above processes is the formation of carbon monoxide (CO), carbon dioxide (CO 2 ) and hydrogen (H 2 ) mixed gas, if the hydrogen (H 2 ), which will inevitably increase the separation cost

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of oxygen-carrying catalytic membrane:

[0025] A. Dissolve commercially pure praseodymium nitrate and zirconium nitrate in water respectively to make rare earth metal salt solutions with a concentration of 1mol / L; then mix the praseodymium nitrate solution and zirconium nitrate solution evenly;

[0026] B. The solution in step A is precipitated with a NaOH solution with a concentration of 1 mol / L to form a rare earth metal hydroxide, and the precipitated rare earth metal hydroxide is washed with water and filtered until the pH value is 7, and the obtained The precursor of the oxygen-carrying catalytic membrane;

[0027] C. The precursor of the oxygen-carrying catalytic membrane in step B is dried at a temperature of 110°C for 12 hours; after drying, it is pre-calcined at a temperature of 300°C for 2 hours; Calcined for 8 hours; finally, the solid calcined at high temperature was pulverized, and pressed at a pressure of 60 MPa to obtain an oxygen-carryin...

Embodiment 2

[0031] Preparation of oxygen-carrying catalytic membrane:

[0032] A. Dissolve analytically pure cerium nitrate and zirconium chloride in water respectively to make rare earth metal salt solutions with a concentration of 3 mol / L, and then mix the cerium nitrate solution and zirconium chloride solution evenly;

[0033] B. Precipitate the solution in step A with ammonia water with a concentration of 4 mol / L to generate rare earth metal hydroxides, wash the precipitated rare earth metal hydroxides with water, and filter them with suction until the pH value is 7. Precursors of oxygen-catalyzed membranes;

[0034] C. Dry the precursor of the oxygen-carrying catalytic membrane in step B at a temperature of 120°C for 18 hours; after drying, pre-calcine at a temperature of 300°C for 2 hours; then pulverize the pre-calcined solid and heat it at a temperature of 800°C Calcined for 8 hours; finally, the solid calcined at high temperature was pulverized and pressed at a pressure of 40...

Embodiment 3

[0038] Preparation of oxygen-carrying catalytic membrane:

[0039] A. Dissolve analytically pure terbium nitrate, cerium nitrate, and zirconium nitrate in water respectively to prepare rare earth metal salt solutions with a concentration of 0.5 mol / L, and then mix the terbium nitrate solution, cerium nitrate solution, and zirconium nitrate solution evenly;

[0040] B. The solution in step A is precipitated with ammonia water with a concentration of 0.1 mol / L to form a rare earth metal hydroxide, and the precipitated rare earth metal hydroxide is washed with water and suction filtered until the pH value is 7 to obtain The precursor of the oxygen-carrying catalytic membrane;

[0041] C. Dry the precursor of the oxygen-carrying catalytic membrane in step B at a temperature of 120°C for 18 hours; after drying, pre-calcine at a temperature of 300°C for 2 hours; then pulverize the pre-calcined solid and heat it at a temperature of 800°C Calcined for 8 hours; finally, the solid c...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for producing synthetic gas through continuous catalysis of methane by oxygen-carrying membrane. The method comprises: introducing methane that is adopted as the reaction raw material gas from one side of an oxygen-carrying catalyzing membrane with thickness of 1-3mm, and simultaneously introducing a regeneration gas from the other side of the oxygen-carrying catalyzing membrane, in per square micrometer of which methane passes at flow of 0.008-0.076Ncm<3>.min<-1> and the regeneration gas passes at flow of 0.012-0.082Ncm<3>.min<-1>, conducting reaction under a reaction pressure of 1-2atm and a temperature of 800-1000DEG C for 0.5-50h, and carrying out collecting at the oxygen-carrying catalyzing membrane side where the raw material gas is introduced, thus obtaining the synthetic gas. The method of the invention has a totally short process, high efficiency, higher yield than traditional methane partial oxidation methods, and lower cost than other methane membrane reactions. The method provided in the invention can make mixing of different proportions according to the preparation technological demands of downstream chemicals or liquid hydrocarbon, thus broadening the application scope.

Description

technical field [0001] The invention relates to a method for continuously catalyzing synthesis gas from methane with an oxygen-carrying membrane, which belongs to the field of chemical preparation. Background technique [0002] With the increasing shortage of petroleum resources, the further development and utilization of natural gas resources has attracted more and more research interest. The main component of natural gas is methane (content > 90%). In addition to being directly used as fuel, it can also be used as an efficient, high-quality, clean energy and chemical raw material. The chemical structure of methane is stable, and its effective conversion process is relatively difficult. The conversion of methane can be divided into direct conversion and indirect conversion. Since the target product required by direct conversion is easily deeply oxidized in the reaction, the yield is very low, and the technical level that can be achieved is still far from the requirement...

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): C01B3/38
CPCY02P20/52
Inventor 李孔斋王华杜云鹏魏永刚祝星段月娟程显名
Owner KUNMING UNIV OF SCI & 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