Supercharge Your Innovation With Domain-Expert AI Agents!

Process for producing high-quality synthesis gas from methane, carbon dioxide and water

A carbon dioxide, high-quality technology, applied in chemical instruments and methods, hydrogen/synthesis gas production, inorganic chemistry, etc., can solve the problems of hydrogen storage and transportation safety obstruction, electric energy cannot be directly stored, molar ratio does not meet the requirements, etc. , to achieve the effect of renewable resources, high energy efficiency and high concentration

Active Publication Date: 2021-07-16
DALIAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will inevitably lead to a large amount of CO in the double whole product gas 2 and H 2 O, so the syngas concentration is very low, and (H 2 -CO 2 ) / (CO+CO 2 ) molar ratio does not meet the requirements
[0006] On the other hand, renewable energy such as wind power and photovoltaic power generation is inherently intermittent and unstable, and electric energy cannot be stored directly. Therefore, how to realize large-scale storage of renewable electric energy is a bottleneck problem restricting its application and development.
Water electrolysis is a mature technology for hydrogen production. Although renewable electricity can be converted into hydrogen energy on a large scale with high efficiency, it is hindered by the safety issues of hydrogen storage and transportation.

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
  • Process for producing high-quality synthesis gas from methane, carbon dioxide and water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] γ-Al with a diameter of 2mm 2 o 3 The ball is used as the carrier, and the supported Co / γ-Al containing 10wt% Co is prepared by the impregnation method 2 o 3 The catalyst is packed in the plasma catalytic reforming reactor. The plasma is generated by sliding arc discharge, the upper end of the catalyst is 4cm away from the end of the plasma, and the outside of the catalytic bed is heated by an electric furnace.

[0023] The flow rate of water flowing into the electrolytic cell is 4.9 mol / h, and the anode and cathode sides of the electrolytic cell generate 2.5 mol / h of O 2 and 4.9mol / h of H 2 . 2.3mol / h O produced on the anode side of the electrolytic cell 2 (the rest is evacuated), with 7.0mol / h CH 4 and 2.3mol / h CO 2 , as reformed feed gas (CH 4 / CO 2 / O 2 The molar ratio is 3 / 1 / 1), and flows into the plasma catalytic reforming reactor. The reaction conditions of the plasma catalytic reforming reactor are: plasma energy density 27kJ / mol, catalyst space velo...

Embodiment 2

[0026] γ-Al with a diameter of 2mm 2 o 3 The pellets were used as the carrier, and the supported Ni / CeO with the weight percentage of Ni and Ce respectively 11wt% and 8wt% was prepared by the step-by-step impregnation method 2 / γ-Al 2 o 3 The catalyst is packed in the plasma catalytic reforming reactor. The plasma catalytic reforming reactor is the same as in Example 1.

[0027] The flow rate of water flowing into the electrolytic cell is 5.7mol / h, and the anode and cathode sides of the electrolytic cell respectively produce 2.9mol / h of O 2 and 5.7mol / h of H 2 . 2.3mol / h O produced on the anode side of the electrolytic cell 2 (the rest is evacuated), with 5.7mol / h CH 4 and 2.3mol / h CO 2 , as reformed feed gas (CH 4 / CO 2 / O 2 The molar ratio is 2.5 / 1 / 1), and flows into the plasma catalytic reforming reactor. The reaction conditions of the plasma catalytic reforming reactor are: plasma energy density 27kJ / mol, catalyst space velocity 254mmol g -1 h -1 (5700ml·g ...

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 provides a method for preparing high-quality synthesis gas from methane, carbon dioxide and water. The water simultaneously generates oxygen and hydrogen in a water electrolysis cell; all or part of the oxygen is mixed with methane and carbon dioxide and flows into a plasma catalytic reforming reactor. Generate reformed product gas; reformed product gas is mixed with hydrogen generated by the cathode of the water electrolysis cell to obtain high-quality synthesis gas; raw materials are methane, carbon dioxide and water, which are rich in resources and renewable, which is beneficial to CO 2 emission reduction. The generated syngas has a high concentration and is consistent with methanol synthesis and Fischer-Tropsch synthesis (H 2 -CO 2 ) / (CO+CO 2 ) molar ratio is equal to 2 requirements, without any post-treatment, that is, directly applied to methanol synthesis and Fischer-Tropsch synthesis. Through the coupling of plasma catalytic reforming and electrolytic water reaction, the electrical energy is converted into chemical energy through the synthesis gas route. The reaction system has the advantages of high energy efficiency, fast response and flexible regulation, and is especially suitable for large-scale storage of renewable electric energy.

Description

technical field [0001] The invention relates to a method for preparing synthesis gas, in particular to a method for preparing high-quality synthesis gas from methane, carbon dioxide and water. Background technique [0002] Syngas is a raw material gas used in the synthesis of liquid fuels and chemicals, with carbon monoxide and hydrogen as the main components. Among them, the syngas requirement (H 2 -CO 2 ) / (CO+CO 2 ) molar ratio is equal to 2 (no CO 2 , which simplifies to H 2 / CO molar ratio is equal to 2). [0003] Since methane has the highest H / C atomic ratio and is extremely abundant in natural and renewable resources, such as natural gas, shale gas, combustible ice, and biogas, it is an important raw material for industrial synthesis gas production. There are three basic reforming methods for producing synthesis gas from methane: steam reforming, CO 2 Reforming (dry reforming) and oxidative reforming (partial oxidation). The first two, steam reforming and CO ...

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): C01B3/40C01B3/36C25B1/04
CPCC01B3/36C01B3/40C01B2203/0861C01B2203/1052C01B2203/1058C25B1/04Y02E60/36Y02P20/10
Inventor 朱爱民李小松刘景林朱晓兵
Owner DALIAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com