Ammonia Reformer Heating Sequence for Faster H2 Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ammonia processing systems face challenges such as slow startup times, non-ideal thermal characteristics, suboptimal conversion efficiencies, and high weight and volume requirements, limiting their effectiveness as a hydrogen storage vector.
Innovation Solution
A method involving heating a first reformer to a target temperature range, directing ammonia to produce reformate comprising hydrogen and nitrogen, combusting a portion of the reformate to heat a second reformer, and further reforming ammonia in the second reformer while using the reformate stream to maintain temperature, with optional processing in a hydrogen processing module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ammonia processing systems are used, then ammonia can be processed, but the systems have slow startup times, non-ideal thermal characteristics, suboptimal conversion efficiencies, and high weight and volume requirements
Solution Approach 1:
The system is divided into multiple reformers (first reformer and second reformer) that operate in sequence or parallel, allowing for optimized processing stages and faster overall conversion while maintaining manageable system complexity
Solution Approach 2:
The first reformer is heated to a target temperature range before ammonia is directed to it, ensuring optimal conditions are already in place for immediate efficient conversion when operation begins, reducing startup time
2Temperature
If conventional ammonia processing systems are used, then ammonia can be processed, but the systems have non-ideal thermal characteristics
Solution Approach 1:
The system employs different target temperature ranges for the first reformer and second reformer, optimizing thermal conditions for each stage of ammonia conversion to improve overall efficiency while maintaining ideal thermal characteristics
Solution Approach 2:
A combustion heater is introduced as an intermediary component to provide controlled heating and maintain optimal temperature ranges in the reformers, improving thermal characteristics and conversion efficiency
3Productivity
If conventional ammonia processing systems are used, then ammonia can be processed, but the systems have high weight and volume requirements
Solution Approach 1:
Multiple reformers and processing functions are combined into an integrated system where the first reformer, second reformer, and combustion heater work together, reducing overall system weight and volume while improving conversion efficiency through optimized spatial arrangement and shared components
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 ammonia conversion efficiency, reduces weight and volume requirements, and improves thermal management, making ammonia a more effective hydrogen storage vector.
Implementation Method 1
NH3 may be contacted with a catalyst in a heated reformer to generate a reformate stream comprising hydrogen (H2) and nitrogen (N2)
Implementation Method 2
combusting a portion of the reformate to heat a second reformer
Implementation Method 3
NH3 may be contacted with a catalyst in a heated reformer to generate a reformate stream comprising hydrogen (H2) and nitrogen (N2)
Data Source
AI summary
The present disclosure provides systems and methods for processing ammonia (NH3). A heater may heat reformers and NH3 reforming catalysts therein. NH3 may be directed to the reformers from storage tanks, and the NH3 may be decomposed to generate a reformate stream comprising hydrogen (H2) and nitrogen (N2). At least part of the reformate stream may be used to heat the reformers.