Manure Acidification Plant Upper Addition Mixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional methods for acidifying animal manure to reduce ammonia emission and improve fertilizing effect are complex, expensive, and inefficient, often leading to incomplete acidification and increased corrosion risks due to improper acid distribution and reaction.
Innovation Solution
A method involving a plant with a process tank where an acidification agent, such as sulphuric acid, is added to the top of the manure, utilizing a propeller agitator for efficient mixing and distribution, ensuring even acidification and minimizing corrosion risks by preventing acid accumulation near tank walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the acidification agent is added at the bottom of the process tank, then the mixing efficiency is improved, but the corrosion risk to the process tank increases due to acid accumulation
Solution Approach 1:
The patent inverts the conventional approach by adding the acidification agent at the upper part of the process tank instead of the bottom. The dense acidification agent sinks through the manure column, providing effective mixing while distributing the acid throughout the volume rather than allowing accumulation at the bottom, thus reducing corrosion risk to the process tank.
Solution Approach 2:
The patent applies local quality by creating different flow patterns in different regions of the tank. The upper addition point creates a top-to-bottom flow pattern that ensures uniform distribution, while the bottom region is protected from excessive acid concentration, thereby localizing the beneficial mixing effect while protecting the tank structure from corrosion.
2Object-affected harmful factors
If the acidification agent is added at an upper part of the process tank, then the corrosion risk is reduced, but the mixing efficiency may be compromised
Solution Approach 1:
The patent utilizes the density parameter of the acidification agent (which is higher than manure) as a key change. By adding the dense acidification agent at the upper part, it naturally sinks and distributes throughout the manure column, achieving effective mixing without requiring mechanical agitation at the addition point, thus maintaining mixing efficiency while reducing corrosion risk.
3Object-generated harmful factors
If traditional acidification methods are used, then ammonia emission reduction is achieved, but the system complexity and cost increase
Solution Approach 1:
The patent extracts the essential function of acidification from complex traditional systems and implements it through a simple upper addition method. By removing unnecessary complexity from the acidification system while maintaining the core function of reducing ammonia emission, the patent achieves the desired environmental benefit with a simpler, more cost-effective system.
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 effectively reduces ammonia emission, enhances the fertilizing effect of animal manure, and prolongs the life of the acidification plant by ensuring thorough acid distribution and minimizing corrosion.
Implementation Method 1
Known acidification agents that are suitable for acidification of animal manure, such as various acids, have a density higher than that of animal manure. On addition of the acidification agent at an upper part of the animal manure, an optimal mixing of the acidification agent is consequently ensured since due to its higher density, the acidification agent will sink down through the animal manure
Implementation Method 2
a process tank provided with a mixing unit for mixing an acidification agent with a quantity of animal manure in said process tank
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a plant (1) for acidification of animal manure (5). The plant (1) comprises a process tank (2) provided with a mixing unit (3) for mixing an acidification agent (4) with a quantity of animal manure (5) in said process tank (2), and wherein said process tank (2) is furthermore provided with supply means (6) for supply of the acidification agent (4) to the animal manure (5) in the process tank (2). Moreover, the plant (1) comprises conveying means (7) for conveying a quantity of animal manure (5) from a livestock stable (8) to the process tank (2), and return means (9) for returning at least a portion of the acidified animal manure (5) from the process tank (2) to a livestock stable (8). The plant (1) is characterized in that said supply means (6) are arranged at an upper part (10) of the process tank (2) so that the acidification agent (4) can be supplied to the animal manure (5) in the process tank (2) at an upper part (11) of the animal manure (5).