Integrated Partial Oxidation and Electrolysis for Hydrogen Production
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Solution Overview
Problem
Electrolysis-based green hydrogen production systems driven by renewable power have significantly higher capital costs compared to fossil-based blue hydrogen technologies, making them less attractive for large-scale hydrogen and electric power production.
Innovation Solution
An integrated partial oxidation and electrolysis process that combines the use of a partial oxidation reactor and an electrolyzer to produce hydrogen, where the oxygen produced by electrolysis is fully utilized in the partial oxidation reactor, and the combined hydrogen is used for power generation, with optional storage and further processing to enhance hydrogen production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrolysis-based green hydrogen production systems are used, then hydrogen can be produced using renewable power, but capital costs are significantly higher than fossil-based blue hydrogen technologies
Solution Approach 1:
The patent combines electrolysis-based green hydrogen production with partial oxidation of carbonaceous feedstock to create an integrated system. The electrolyzer produces hydrogen and oxygen, where the oxygen is fed to the partial oxidation reactor. This merging allows the system to achieve green hydrogen production while using the exothermic partial oxidation to provide heat for the endothermic reforming reactions and potentially reduce overall energy requirements, thereby lowering capital expenditure barriers while maintaining renewable power utilization.
Solution Approach 2:
The integrated system performs multiple functions: the electrolyzer produces both hydrogen (for green hydrogen production) and oxygen (as a byproduct); the partial oxidation reactor uses this oxygen to generate heat and produce additional hydrogen; the system can operate in multiple modes depending on feedstock availability and power costs. This multi-functionality increases the economic viability and reduces capital expenditure requirements compared to standalone electrolysis systems.
2Use of energy by moving object
If electrolysis-based green hydrogen systems are deployed at scale, then renewable power utilization increases, but financial risk increases due to higher capital costs
Solution Approach 1:
The system allows for parameter changes in operation mode depending on economic conditions. When renewable power is cheap and abundant, the system operates primarily in electrolysis mode for green hydrogen production. When power costs are high or feedstock is available, the system increases partial oxidation contribution. This flexibility in operational parameters allows project developers to optimize the green/blue hydrogen mix based on real-time economic conditions, reducing financial risk while maintaining high renewable power utilization when advantageous.
3Ease of manufacture
If partial oxidation is integrated with electrolysis, then capital expenditures are reduced, but system complexity increases
Solution Approach 1:
The integrated system is designed so that the electrolyzer's oxygen byproduct automatically serves the partial oxidation reactor's oxygen requirement, and the partial oxidation heat automatically contributes to the overall energy balance. This self-service arrangement reduces the need for external oxygen supply infrastructure and simplifies the integration complexity despite combining multiple processes. The system uses its own internal byproducts and energy flows to reduce external dependencies.
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 integrated approach reduces capital expenditures, lowers financial risks, and attracts more capital investments by efficiently producing hydrogen and electric power at scale, utilizing renewable energy sources while integrating green and blue hydrogen production methods.
Implementation Method 1
an electrolyzer to convert water to hydrogen and oxygen
Implementation Method 2
a partial oxidation reactor to partially combust a carbonaceous gaseous and/or liquid feed with oxygen to generate heat
Implementation Method 3
generate heat used to pyrolyze a non-combusted portion of the carbonaceous gaseous and/or liquid feed
Data Source
AI summary
A system and method for producing hydrogen and/or power at scale. A partial combustion of a carbonaceous gaseous and/or liquid feed with an oxygen-containing feed generates heat for pyrolyzing non-combusted carbonaceous gaseous and/or liquid feed materials to produce an effluent including hydrogen, carbon monoxide, carbon dioxide, water, and nitrogen. Electrolysis powered by a renewable energy source converts water to hydrogen and oxygen for the oxygen-containing feed. Hydrogen is collected from the electrolysis, and also from the effluent, and sent to a hydrogen-based power generator.