Integrated Ammonia Waste Fluid Neutralization With pH Feedback
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Solution Overview
Problem
The challenge of efficiently neutralizing ammonia-containing waste fluids, particularly from lubricating oils used in ammonia fuel engines, due to limited installation space in ships and land power plants, which can lead to corrosion and the need for effective disposal.
Innovation Solution
A neutralization processing system and method involving a sludge tank, neutralizer supply line, and pH/ammonia concentration sensors to measure and neutralize ammonia-containing waste fluids using citric acid as a neutralizer, with optional additives like iron oxide for detoxification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a recovery tank is used to store ammonia-containing waste fluid, then the waste fluid can be recovered and neutralized, but the installation space requirement increases
Solution Approach 1:
The patent combines the waste fluid storage function and neutralization processing function into a single integrated tank system. The neutralization tank serves both as a storage container for ammonia-containing waste fluid and as a processing vessel where neutralization occurs, eliminating the need for separate recovery and processing equipment.
Solution Approach 2:
The neutralization tank is designed to perform multiple functions: storing waste fluid, conducting neutralization reactions, and facilitating sludge separation. This multi-functional design reduces the overall equipment footprint while maintaining complete waste fluid management capability.
2Productivity
If ammonia concentration in lubricating oil increases due to moisture mixing, then carbon-neutral energy use is achieved, but corrosion risk increases
Solution Approach 1:
The patent converts the harmful effect of ammonia dissolution in lubricating oil into a beneficial neutralization process. By adding citric acid to neutralize the ammonia, the system transforms the corrosive ammonia-containing waste fluid into harmless substances (ammonium citrate), turning the corrosion problem into an opportunity for chemical treatment and resource recovery.
Solution Approach 2:
The patent employs pH sensors and ammonia concentration sensors to continuously monitor the waste fluid conditions, providing feedback control for the neutralization process. This ensures that neutralization is performed only when necessary and at the appropriate level, preventing over-neutralization while effectively eliminating corrosion risks.
3Device complexity
If neutralization is performed without precise measurement, then the process is simpler, but neutralization efficiency decreases
Solution Approach 1:
The patent uses pH sensors and ammonia concentration sensors to provide real-time feedback on the neutralization process status. This feedback mechanism allows the system to automatically adjust the neutralizer dosage and determine when neutralization is complete, ensuring high efficiency without requiring complex manual monitoring or adjustment procedures.
Solution Approach 2:
The neutralization system is designed to automatically monitor and adjust the neutralization process based on sensor readings, reducing the need for manual intervention. The system self-regulates the neutralizer addition rate and determines process completion, maintaining simplicity while achieving high neutralization efficiency.
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
Efficient neutralization of ammonia-containing waste fluids, reducing corrosion risks and enabling safe disposal by directly measuring pH and ammonia concentration for precise neutralizer application.
Implementation Method 1
a sensor configured to measure pH of the waste fluid or an ammonia concentration of the waste fluid
Implementation Method 2
neutralizing the waste fluid by adding a neutralizer to the waste fluid in accordance with either or both of a measured value of the pH of the waste fluid and a measured value of the ammonia concentration of the waste fluid
Data Source
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AI summary
A neutralization processing system for an ammonia-containing waste fluid, includes: one or more sludge tanks; a sludge discharge line configured to supply the waste fluid to the sludge tank; a neutralizer supply line configured to supply a neutralizer to the sludge tank; and a sensor configured to measure pH of the waste fluid or an ammonia concentration of the waste fluid.