Hydrogen Apparatus Emulsifier and Reformers
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Solution Overview
Problem
Existing hydrogen producing apparatuses face challenges in achieving efficient hydrogen production due to issues with thermal energy management and homogenous mixing of fuel and water in hydrocarbon fuel reforming processes, particularly in autothermal reforming and partial oxidation processes.
Innovation Solution
A hydrogen producing apparatus comprising a reforming unit with multiple reformers, a feed unit for forming a reactant mixture, and a heating unit, where the reformers are heated to increase the total heating surface area and enhance thermal energy recycling, and an emulsifier is used to ensure homogenous mixing of fuel and water before reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multiple reformers are used to increase heating surface area, then thermal energy recycling is enhanced, but device complexity increases
Solution Approach 1:
The system divides the reforming process into multiple separate reformers (first reformer, second reformer, etc.) arranged in sequence within the reactor. Each reformer handles a portion of the fuel conversion, allowing thermal energy to be progressively recovered and reused across multiple stages, thereby enhancing overall thermal efficiency while managing complexity through modular segmentation
Solution Approach 2:
Multiple reformers are nested within a single reactor vessel, with each reformer contained within the overall reactor structure. This nesting approach allows multiple heating surfaces to be packed into one compact unit, increasing thermal recycling efficiency without proportionally increasing the external footprint or operational complexity
2Device complexity
If fuel and water are mixed without emulsification, then mixing is simple, but homogeneity is poor leading to carbon deposition
Solution Approach 1:
An emulsifier is introduced in the feed system before the reforming process to pre-mix fuel and water into a homogeneous emulsion. This preliminary emulsification action ensures uniform distribution of fuel and water molecules before they enter the reformers, preventing carbon deposition by eliminating localized fuel-rich zones that would otherwise form during the reaction
Solution Approach 2:
The emulsifier acts as an intermediary substance or device between fuel and water, creating an emulsion that facilitates homogeneous mixing. This intermediary mechanism allows poor-mixing fuel-water combinations to achieve uniform distribution without requiring complex high-speed mixing equipment, thereby reducing carbon deposition while keeping the mixing system relatively simple
3Productivity
If reformers are heated to high temperatures, then hydrogen production efficiency increases, but thermal control stability becomes difficult to maintain
Solution Approach 1:
The system employs thermal feedback mechanisms where heat generated by the exothermic reforming reactions in early reformers is automatically channeled to preheat feeds and maintain temperatures in subsequent reformers. This feedback loop stabilizes operating temperatures across all reformers, allowing high-temperature operation for efficient hydrogen production while maintaining temperature consistency through self-regulating thermal coupling
Solution Approach 2:
Multiple reformers are thermally coupled and operated in sequence, merging their thermal fields so that heat from one reformer directly benefits adjacent reformers. This merging of thermal zones creates a unified temperature distribution pattern that maintains stable operating conditions across the entire reforming system, preventing temperature fluctuations that would otherwise occur in isolated high-temperature reactors
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 apparatus achieves improved reaction efficiency, reduces carbon deposition, and enhances thermal control, ensuring consistent operation temperatures and increased hydrogen production efficiency by evenly heating and emulsifying fuel and water before reaction.
Implementation Method 1
at least one gas pipe extends between and through the gas intake and outlet ports of the casing and winds around one of the reformers
Implementation Method 2
air delivered from the gas intake port through the gas pipe and the connecting pipe is mixed with a fuel in the feed unit to form a reactant mixture
Implementation Method 3
The heating unit includes a heater that is connected to the casing and that is configured for heating the receiving space
Implementation Method 4
a reforming unit for carrying out a reforming reaction
Data Source
AI summary
A hydrogen producing apparatus includes a reforming unit, a feed unit, and a heating unit. The reforming unit includes a casing defining a receiving space and having gas intake and outlet ports, a plurality of reformers disposed in the receiving space, at least one gas pipe winding around one of the reformers, and a connecting pipe in fluidic communication with the gas pipe. The feed unit is in fluidic communication with the reformers and the connecting pipe such that air delivered from the gas intake port through the gas pipe and the connecting pipe is mixed with a fuel in the feed unit to form a reactant mixture to be fed to the reformers for hydrogen production. The heating unit includes a heater connected to the casing.