Ammonia Removal Equipment with Real-Time Concentration Measurement
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Solution Overview
Problem
Existing ammonia removal systems face challenges in predicting breakthroughs in adsorbers, leading to increased frequency of regenerating or replacing adsorbers and production of gases with high ammonia concentrations, as they require switching between adsorbers before breakthrough occurs.
Innovation Solution
Configuring multiple ammonia removal apparatuses in series with real-time ammonia concentration measurement using WS-CRDS systems to detect breakthroughs promptly and switch operations effectively, allowing continued use of the first apparatus until breakthrough and ensuring the second apparatus treats the gas to low concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If switching operation between two adsorbers arranged in parallel before breakthrough occurs, then ammonia removal reliability is improved, but the frequency of regenerating adsorbers increases and productivity deteriorates
Solution Approach 1:
The system dynamically switches between parallel adsorber configurations based on real-time ammonia concentration measurements. The control unit monitors breakthrough occurrence and automatically transitions adsorbers between service and regeneration modes, optimizing both reliability and productivity by extending service life until actual breakthrough rather than predetermined intervals
Solution Approach 2:
Ammonia concentration measurement units provide real-time feedback on breakthrough occurrence to the control unit. This feedback mechanism enables the system to adjust operation modes dynamically, switching from preventive replacement to condition-based replacement, thereby reducing unnecessary regeneration frequency while maintaining reliable ammonia removal
2Productivity
If using adsorbers until immediately before breakthrough, then productivity is improved, but it becomes difficult to predict breakthrough timing and ammonia removal reliability deteriorates
Solution Approach 1:
Real-time ammonia concentration measurement provides feedback on actual breakthrough occurrence. The control unit uses this information to determine precise switching timing, allowing the system to maximize adsorber utilization while reliably detecting breakthrough moments, thus resolving the conflict between productivity and reliability
Solution Approach 2:
The system replaces predictive timing mechanisms with actual measurement-based detection. Instead of relying on predetermined schedules or estimation methods, the system directly measures ammonia concentration to detect breakthrough, enabling both extended operation and reliable control
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 reduces the frequency of regenerating or replacing ammonia removal apparatuses and minimizes the discharge of high ammonia concentration gases, maintaining efficient ammonia removal and hydrogen gas production.
Implementation Method 1
the fuel gas is introduced into an adsorber to remove ammonia
Implementation Method 2
measuring an ammonia concentration in a gas after being treated by ammonia removal apparatuses at previous stages
Data Source
Figure 1~3
Figure 4
AI summary
Ammonia removal equipment and the like, the equipment including a first ammonia removal apparatus that removes ammonia in a mixed gas comprising hydrogen and ammonia, a second ammonia removal apparatus that is installed at a stage subsequent to the first ammonia removal apparatus and that treats a first treated gas treated by the first ammonia removal apparatus, and a first ammonia concentration measurement apparatus that measures the ammonia concentration in the first treated gas treated by the first ammonia removal apparatus.