Low-Temperature Catalytic Reactor for Carbon Dioxide Conversion
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Solution Overview
Problem
Existing methods for converting carbon dioxide into valuable products like acetic acid or carbon monoxide are inefficient and do not effectively utilize the greenhouse gas emissions produced by processes such as steam cracking and oxidative dehydrogenation.
Innovation Solution
A reactor system using low-temperature ODH catalysts converts carbon dioxide into acetic acid or carbon monoxide by hydrogenation and water gas shift reactions, operating at temperatures below 425°C, and includes a condenser to separate and condense the products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to convert carbon dioxide into valuable products, then the conversion efficiency is low, but the process complexity and cost increase
Solution Approach 1:
The patent changes the temperature parameter to below 425°C and uses specific catalyst compositions (metal oxides such as copper, zinc, aluminum, calcium, magnesium, or their combinations) to achieve efficient CO2 conversion without requiring complex high-temperature equipment or multiple processing stages
Solution Approach 2:
The patent introduces catalysts as intermediary substances that facilitate the conversion of CO2 to acetic acid or carbon monoxide through hydrogenation and water-gas shift reactions, enabling the process to proceed efficiently at lower temperatures without complex equipment
2Productivity
If high temperature processes are used for carbon dioxide conversion, then the reaction rate increases, but energy consumption and equipment requirements increase
Solution Approach 1:
The patent changes the temperature parameter from conventional high temperatures to below 425°C while maintaining high reaction rates through the use of specific catalyst compositions, thereby reducing energy consumption and equipment requirements
Solution Approach 2:
The patent replaces thermal energy input (high temperature) with catalytic action (metal oxide catalysts) to drive the conversion reactions, substituting a mechanical/thermal system with a chemical catalytic system that operates at lower temperatures
3Object-affected harmful factors
If carbon dioxide emissions are not utilized, then the process simplicity is maintained, but environmental harm increases
Solution Approach 1:
The patent converts the harmful CO2 emissions from steam cracking or oxidative dehydrogenation processes into valuable chemical products (acetic acid or carbon monoxide) through catalytic hydrogenation and water-gas shift reactions, transforming an environmental problem into an economic opportunity
Solution Approach 2:
The patent integrates CO2 utilization into existing ethylene production processes, allowing the same industrial setup to simultaneously produce ethylene while converting CO2 emissions into additional valuable products, thereby achieving multiple functions without proportionally increasing complexity
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
The system efficiently converts carbon dioxide into value-added products like acetic acid or carbon monoxide, reducing emissions and providing flexibility in ethylene production processes.
Implementation Method 1
contacting carbon dioxide with catalyst in presence of hydrogen in a reactor to convert carbon dioxide into acetic acid and carbon monoxide
Implementation Method 2
converts carbon dioxide into acetic acid or carbon monoxide by hydrogenation and water gas shift reactions
Implementation Method 3
condensing the acetic acid and the water in the condenser heat exchanger
Implementation Method 4
discharging a product effluent from the reactor to a condenser heat exchanger
Data Source
AI summary
A system and method for converting carbon dioxide into products by contacting the carbon dioxide with catalyst in the presence of hydrogen in a reactor.