Electrically Heated Reforming Reactors for Catalyst-Bed Heat Control
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Solution Overview
Problem
Existing methane reforming processes face challenges in achieving efficient heat input and management in catalyst beds, requiring high temperatures and complex infrastructure, especially for smaller scale operations, and result in significant CO2 emissions.
Innovation Solution
The use of electrically heated reactors with heating elements extending through the catalyst bed allows for precise control of heat input, eliminating the need for conventional furnaces and reducing CO2 emissions, enabling compact and transportable reactor designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional combustion furnaces are used for heating catalyst beds in reforming reactors, then high temperatures required for reforming reactions can be achieved, but the system becomes complex and generates significant CO2 emissions
Solution Approach 1:
The patent replaces the mechanical combustion furnace system with an electrical heating system. Heating elements are directly inserted into the catalyst bed to provide heat electrically, eliminating the need for external combustion furnaces and associated complex infrastructure while achieving the required high temperatures for reforming reactions
Solution Approach 2:
The invention extracts the heating function from the external combustion furnace and places heating elements directly within the catalyst bed. This separation allows the heating system to be simplified and localized, reducing overall device complexity while maintaining effective temperature control
2Temperature
If conventional combustion furnaces are used for heating catalyst beds, then high temperatures can be achieved, but CO2 emissions increase significantly
Solution Approach 1:
The patent substitutes electrical heating for combustion-based heating, replacing a chemical process that generates CO2 emissions with an electrical process that does not directly produce emissions. This eliminates the harmful byproducts associated with fossil fuel combustion while maintaining the necessary temperature levels
Solution Approach 2:
The invention converts the harmful CO2 emissions from combustion into beneficial electrical energy input. By using electricity (potentially from renewable sources) to heat the catalyst bed, the system eliminates carbon emissions while achieving the same thermal effect, effectively transforming a harmful process into a clean one
3Use of energy by moving object
If gas fired heating is used for reforming operations, then required heat input can be provided, but system infrastructure becomes large and complex
Solution Approach 1:
The patent replaces the gas-fired heating system with direct electrical heating elements inserted into the catalyst bed. This substitution provides the necessary heat input through a simpler electrical system, eliminating the need for gas delivery infrastructure, burners, and associated control systems
Solution Approach 2:
The heating elements serve multiple functions: they provide heat to the catalyst bed, act as temperature sensors through their electrical properties, and can be independently controlled for different zones. This multi-functionality reduces the need for separate heating and monitoring systems, simplifying overall infrastructure
4Temperature
If conventional furnaces are used for heating, then high temperatures can be maintained, but compactness and transportability are compromised
Solution Approach 1:
The invention extracts the heating function from a large external furnace and integrates it directly into the reactor vessel through inserted heating elements. This consolidation eliminates the need for separate furnace structures, allowing the entire system to be compact and potentially transportable while maintaining high operating temperatures
Solution Approach 2:
The heating elements are nested directly within the catalyst bed and reactor structure. This nested arrangement integrates the heating system into the existing reactor volume, eliminating the need for external furnace enclosures and reducing the overall footprint of the equipment
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 enables efficient heat control and production of synthesis gas at lower temperatures, reducing carbon footprint and infrastructure complexity, while allowing for flexible deployment at hydrocarbon sources.
Implementation Method 1
Through resistive or inductive heating, electricity may be used to quickly and efficiently raise the temperature of a catalyst bed
Implementation Method 2
Through resistive or inductive heating, electricity may be used to quickly and efficiently raise the temperature of a catalyst bed
Implementation Method 3
contacting a reformer feed comprising both (i) a hydrocarbon and (ii) H2O and/or CO2 with a catalyst that is disposed in the catalyst bed volume
Data Source
AI summary
Electrically heated reforming reactors and associated reforming processes are disclosed, which benefit from a number of advantages in terms of attaining and controlling the input of heat to catalytic conversion processes such as in the reforming of hydrocarbons (e.g., methane) using H2O and/or CO2 as an oxidant. The disclosed reactors provide the ability to target the input of heat to specific regions within a catalyst bed volume. This allows for the control of the temperature profile in one or more dimensions (e.g., axially and/or radially) and/or otherwise tailoring heat input for processing specific reformer feeds, achieving specific reformer products, effectively utilizing the catalyst, and/or compensating for a number of operating parameters (e.g., flow distribution). Dynamic control of the heat input may be used in response to changes in feed or product composition and/or catalyst activity.