DBD Plasma Reactor for COx Hydrogenation
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Solution Overview
Problem
Existing methods for converting by-product gases or waste gases into higher-value-added chemical products require significant heat input, limiting efficiency and reactor material choices due to severe reaction conditions.
Innovation Solution
A dielectric barrier discharge (DBD) plasma reactor with a catalyst bed using a catalytically active component on a mesoporous support, where the catalyst is reduced at 300° C. to 500° C. in a reducing atmosphere to activate COX hydrogenation, allowing plasma conversion of COX to light hydrocarbons at room temperature or less without external heat supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional COX hydrogenation reactions are performed at high temperatures and high pressures, then conversion efficiency is improved, but energy consumption increases and reactor material choices are limited
Solution Approach 1:
The invention changes the temperature and pressure parameters from conventional high-temperature/high-pressure conditions to low-temperature/low-pressure plasma conditions, enabling COX hydrogenation without the severe reaction conditions that typically require high energy input
Solution Approach 2:
The invention replaces the conventional thermal-mechanical reaction system with a plasma-based system, using electromagnetic field energy to drive the hydrogenation reaction instead of relying on thermal energy and high pressure
2Speed
If conventional COX hydrogenation reactions are performed at high temperatures, then reaction rate is improved, but heat supply requirements increase
Solution Approach 1:
The invention replaces thermal energy input with plasma energy input, using electromagnetic fields to activate reactants and drive reactions without requiring high temperatures and external heat supply
Solution Approach 2:
The plasma discharge operates in periodic pulses, creating transient high-energy states that drive the reaction forward without maintaining continuous high-temperature conditions that would require constant heat input
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method effectively converts by-product gases into higher-value-added chemical products like methane, ethane, and propane without additional heat, achieving high CO conversion rates and maintaining CO2 conversion rates similar to those at higher temperatures, while simplifying reactor design and operation.
Implementation Method 1
forming light hydrocarbon(s) in gas-phase through plasma conversion of COX without heat supply from the outside
Implementation Method 2
dielectric barrier discharge (DBD) plasma reactor
Implementation Method 3
catalyst for COX hydrogenation comprises a catalytically active component on a mesoporous support that is a dielectric
Implementation Method 4
a first step of reducing a metal-based catalytically active component at 300° C. to 500° C. in a reducing atmosphere to preliminarily activate a catalyst for COX hydrogenation
Implementation Method 5
reducing a metal-based catalytically active component at 300° C. to 500° C.
Data Source
AI summary
The present invention relates to a dielectric barrier discharge (DBD) plasma reactor comprising a catalyst bed for COX hydrogenation in a discharge region; and a method to produce light hydrocarbons from a COX-containing gas mixture in the DBD plasma reactor. In the DBD plasma reactor for a COX hydrogenation reaction, the catalyst for COX hydrogenation comprises a catalytically active component on a mesoporous support that is a dielectric. When the DBD plasma reactor for a COX hydrogenation reaction according to the present invention is used, it is possible to convert by-product gases or waste gases into higher-value-added chemical products without additional heat supply from the outside.