Dehydrogenation Apparatus with Partitioned Reaction Chambers
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Solution Overview
Problem
The hydrogen conversion rate of hydrides in dehydrogenation reactors is lowered when the reaction between the hydride and acid aqueous solution is temporarily stopped and restarted due to solidified products interfering with the reaction, leading to inefficient hydrogen supply for fuel cells and hydrogen combustion devices.
Innovation Solution
A dehydrogenation reaction apparatus with a partitioned reaction vessel, a buffer tank for hydrogen storage, and a controller that adjusts acid aqueous solution supply based on hydrogen consumption and pressure, ensuring efficient hydrogen generation and supply to fuel cells by optimizing the reaction process across multiple reaction chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reaction between hydride and acid aqueous solution is temporarily stopped and restarted, then the reaction can be paused for operational flexibility, but the hydrogen conversion rate of hydride is lowered due to solidified products interfering with the reaction
Solution Approach 1:
The reaction vessel is divided into multiple reaction chambers by partition walls, allowing the reaction to be segmented into independent zones. This enables temporary suspension of reaction in certain chambers without affecting others, and prevents solidified products from one chamber from interfering with reactions in other chambers, thereby maintaining hydrogen conversion rate while providing operational flexibility.
2Productivity
If multiple reaction chambers are used to maintain high hydrogen conversion rate, then the hydrogen supply efficiency is improved, but the device complexity increases due to partition walls and multiple supply ports
Solution Approach 1:
The partition walls serve multiple functions: they separate reaction chambers to prevent interference from solidified products, provide structural support for the reaction vessel, and act as mounting surfaces for supply ports and cooling coils. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving improved hydrogen supply efficiency.
3Quantity of substance
If acid aqueous solution is continuously supplied to maintain hydrogen supply, then the hydrogen availability is improved, but the loss of substance increases due to unnecessary reaction when hydrogen demand is low
Solution Approach 1:
The supply of acid aqueous solution is made dynamic and controllable through individual supply ports for each reaction chamber. The system can adjust the timing and amount of acid solution supplied to each chamber based on real-time hydrogen demand, allowing continuous supply when needed while preventing unnecessary reactions and substance loss when demand is low, thereby optimizing both hydrogen availability and substance utilization.
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
Maintains a high hydrogen conversion rate of hydrides and stabilizes hydrogen supply to fuel cells by reacting all hydrides stored in partitioned reaction chambers and using a buffer tank for temporary hydrogen storage, enhancing the operational efficiency and continuity of hydrogen fuel systems.
Implementation Method 1
a reaction between the hydride and the acid aqueous solution is temporarily stopped and restarted
Implementation Method 2
a cooling coil installed inside the reaction vessel to circulate a refrigerant
Data Source
AI summary
A dehydrogenation reaction apparatus is disclosed. An embodiment of the present disclosure provides a dehydrogenation reaction apparatus, including: a dehydrogenation reactor that includes a reaction vessel configured to store a chemical hydride, and at least one partition wall partitioning an inner space of the reaction vessel into a plurality of reaction chambers; and a buffer tank configured to temporarily store hydrogen generated in the dehydrogenation reactor and then supply the hydrogen to the fuel cell.