Catalyst-Coated Foam Reactor for Burner-Free Hydrogen Production
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Solution Overview
Problem
Current methods for producing hydrogen from hydrocarbons and oxygenates are inefficient and environmentally impactful, lacking in energy efficiency and sustainability, and pose safety risks due to the use of autothermal burners.
Innovation Solution
A non-autothermal adiabatic reactor utilizing a catalyst-coated foam material body within a reactor vessel, where reactants are introduced through angled inlets to facilitate mixing and catalytic reactions without combustion, allowing for efficient conversion of hydrocarbons and oxygenates to syngas and hydrogen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If autothermal burners are used for hydrogen production from hydrocarbons and oxygenates, then high temperature reaction is achieved, but safety risks increase and greenhouse gas emissions are generated
Solution Approach 1:
The patent removes the autothermal burner component from the system entirely, replacing combustion-based heating with alternative heating methods. This extraction of the harmful combustion element eliminates both safety risks associated with open flames and greenhouse gas emissions, while maintaining the necessary reaction temperature through non-combustion heating approaches.
Solution Approach 2:
The patent converts the harmful effect of combustion into a beneficial non-combustion heating process. By using external heating sources or alternative energy input methods that do not involve burning hydrocarbons, the system achieves the required high temperature for hydrogen production without generating CO2 emissions or creating safety hazards associated with autothermal burners.
2Device complexity
If conventional reactor designs are used for hydrocarbon conversion, then simple structure is maintained, but energy efficiency and conversion effectiveness decrease
Solution Approach 1:
The reactor is divided into distinct functional zones: a heating section for temperature control, a reaction section with catalyst-coated foam material for hydrocarbon conversion, and a product separation section. This segmentation allows each zone to be optimized for its specific function, improving overall energy efficiency and conversion effectiveness without creating excessive structural complexity.
Solution Approach 2:
The patent employs foam material with catalyst coating, utilizing the porous structure to increase surface area for catalytic reactions. This porous architecture enhances mass transfer and reaction efficiency, allowing better conversion effectiveness while maintaining a relatively simple overall reactor design.
3Loss of energy
If catalyst-coated foam material is used in the reactor, then heat and mass transfer are optimized, but device complexity increases
Solution Approach 1:
The patent uses composite foam material that combines the structural properties of foam with catalytic functionality through coating. This composite approach integrates multiple functions (structural support, heat transfer, and catalysis) into a single component, improving heat and mass transfer efficiency without proportionally increasing device 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 reactor achieves high efficiency and safety by eliminating the need for burners, optimizing heat and mass transfer, and producing hydrogen with improved selectivity and yield, while reducing greenhouse gas emissions.
Implementation Method 1
a foam material body having a conversion catalyst thereon and/or therein, positioned in the interior volume of the reactor vessel for contacting thereof by the reactant(s)
Implementation Method 2
reactor vessel defining an interior volume therein for adiabatic reaction
Data Source
AI summary
A non-autothermal adiabatic reactor is described, including a reactor vessel defining an interior volume therein for adiabatic reaction, an inlet assembly including one or more inlets arranged to introduce reactant(s) to the interior volume of the reactor vessel, a foam material body having a conversion catalyst thereon and/or therein, positioned in the interior volume of the reactor vessel for contacting thereof by the reactant(s) introduced to the interior volume, and an outlet arranged to discharge reaction product(s) from the reactor vessel. The non-autothermal adiabatic reactor is advantageously used to produce hydrogen from an ethanol or other hydrocarbon feedstock.