SMR Reactor CO2 Integration for Syngas Efficiency
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Solution Overview
Problem
The Steam Methane Reforming (SMR) process is inefficient and contributes significantly to atmospheric carbon dioxide emissions, with high costs associated with syngas generation, limiting the production of liquid fuels like Ethanol.
Innovation Solution
Introducing a CO2 stream from industrial sources into the SMR reaction chamber, where it is converted to Syngas, increasing efficiency and reducing atmospheric CO2, while maintaining the standard SMR reactions with methane and steam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the SMR process is used to produce syngas, then liquid fuels can be produced, but the process is inefficient and results in significant carbon dioxide emissions
Solution Approach 1:
The patent converts the harmful CO2 emissions from the SMR process into a useful resource by introducing CO2 as an additional feedstock. The CO2 reacts with H2 in the reformer to produce additional CO and H2O, thereby reducing emissions while enhancing syngas production efficiency and flexibility.
Solution Approach 2:
The patent changes the chemical composition parameters of the feedstock by introducing CO2 into the SMR process. This parameter change enables new reaction pathways (CO2 + H2 ↔ CO + H2O) that improve syngas production efficiency while simultaneously reducing the harmful CO2 emissions that would otherwise be released to the atmosphere.
2Productivity
If CO2 is introduced as a feedstock into the SMR reaction chamber, then syngas production efficiency increases, but the process complexity increases
Solution Approach 1:
The patent makes the SMR reaction chamber multi-functional by enabling it to process not only the traditional CH4 and H2O feedstocks but also CO2 as an additional feedstock. This universality allows the same reactor to perform multiple functions: traditional steam methane reforming, CO2 reforming, and water-gas shift reactions, thereby increasing syngas production efficiency without requiring separate processing units.
3Object-generated harmful factors
If CO2 from industrial sources is utilized as feedstock, then atmospheric CO2 is reduced, but the cost of feedstock preparation increases
Solution Approach 1:
The patent applies the self-service principle by utilizing CO2 that is already present in industrial sources and would otherwise be emitted to the atmosphere. Instead of requiring expensive external CO2 capture and purification systems, the process uses readily available CO2 streams from industrial processes, thereby reducing atmospheric CO2 while minimizing additional feedstock preparation costs.
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 approach enhances the H2/CO ratio, increases Ethanol production, and reduces atmospheric CO2, offering economic and environmental benefits by utilizing CO2 as a feedstock in the SMR process.
Implementation Method 1
the CO2 added as a feed-stock results in another reaction (CO2+H2CO+H2O) taking place in the chamber such that the CO2 from the gaseous stream is also converted to CO in the Syngas
Implementation Method 2
The SMR reaction is: CH4+H2OCO+3H2
Implementation Method 3
the Water-Gas Shift reaction is: CO+H2OCO2+H2
Data Source
AI summary
A system and method for increasing the production of Syngas from an SMR (Steam Methane Reforming) processing plant by providing CO2 as an additional feedstock, such as from an exhaust stream of a Corn-to-Ethanol plant, or from a power plant or industrial plant, like a cement plant. The CO2 steam and methane are introduced into the SMR reactor heated to about 870° C. and at about one atmosphere such that a reaction takes place that produces Syngas comprising CO, Hydrogen (H2) and carbon dioxide (CO2). The Syngas is then cleaned and provided to a Fischer-Tropsch synthesis reactor or other Bio-catalytic synthesis reactor to produce Ethanol or other high value liquid fuel.