Biogas Additive Injection via Fluid-Driven Soluble Packaging
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Solution Overview
Problem
The use of hazardous trace elements like nickel, cobalt, and selenium in biogas production poses safety risks to operators and the environment, and existing methods for introducing these additives into biogas plants are costly and require significant operational effort due to safety regulations, with risks of exposure and high costs associated with packaging and handling.
Innovation Solution
A biogas plant design where a container for additives is connected to the pipeline downstream of a closing means, allowing safe introduction of dust-proof, water-soluble packaging of trace elements through a fluid line, ensuring safe handling and reducing operational costs by avoiding direct contact and minimizing hazardous substance exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hazardous trace elements are introduced into the fermenter through the pipeline using dust-tight water-soluble packaging, then the additives can be introduced without additional packaging costs and complexing agents, but there is a risk that packaging could tear open in the pipeline and additives could collect in dead spaces, causing exposure risks to operating personnel
Solution Approach 1:
A container is introduced as an intermediary component between the pipeline and the fermenter. This container receives the packaged trace elements from the pipeline and provides a controlled transfer point, eliminating the need for packaging in the pipeline itself while preventing exposure risks through controlled access and proper containment during transfer operations
Solution Approach 2:
The packaging is extracted from the pipeline environment and placed in a dedicated container system. This separates the packaging function from the transport function, allowing the packaging to be handled in a controlled setting rather than being subjected to pipeline conditions that could cause tearing and exposure
2Object-affected harmful factors
If trace elements are greatly diluted through fillers to fall below limit values, then safety risks to personnel and environment are reduced, but the filler and higher transport weight cause relatively high costs
Solution Approach 1:
The trace elements are packaged in dust-tight water-soluble packaging before introduction, which maintains concentration without requiring fillers. The packaging itself provides the safety function by preventing dust release during handling and transport, eliminating the need for dilution with fillers while maintaining safety standards
3Productivity
If hazardous substances are stored and used in production plants, then the fermentation process can be optimized by adding trace elements, but the use requires adherence to technical rules such as TRGS and GefStoffV, increasing operational effort and costs
Solution Approach 1:
Single-use dust-tight water-soluble packaging is employed for trace element introduction. This disposable approach eliminates the need for complex storage facilities, handling procedures, and compliance infrastructure required for hazardous substance management, while still achieving the fermentation optimization benefits
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
The solution enables safe and cost-effective introduction of hazardous additives into biogas plants, reducing risks to personnel and the environment while adhering to safety regulations, by using a fluid line to introduce trace elements in a controlled manner, thus preventing exposure and lowering operational costs.
Implementation Method 1
a fluid line (11) which is connected to the container (5) and conveys a fluid into the container (5) in order to create a pressure in the container (5)
Implementation Method 2
the additives (6) are introduced through the pipeline (2) into the fermenter (1) in dust-tight but water-soluble packaging
Data Source
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AI summary
The invention relates to a biogas plant with at least one digester (1) for the degradation of a substrate to produce biogas, wherein at least one pipeline (2) for supplying a pumpable medium into the digester (1) is connected to the digester (1). According to the invention, a container (5) for additives (6) is connected to the pipeline (2) downstream of a first closure device (4), wherein the container (5) is connected to a fluid line (11) which carries a fluid, so that the additives (6) can be introduced into the digester (1) by means of the fluid. Furthermore, the invention relates to a device and a method for introducing additives (6) into a digester (1) of a biogas plant, wherein at least one pipeline (2) for supplying a pumpable medium into the digester (1) is connected to the digester (1).The additives (6) are introduced into the fermenter (1) via the pipeline (2) in a dust-proof, water-soluble package, in particular in the form of at least one bag. Trace elements, which are considered hazardous substances due to their toxicity and mutagenicity, are safely introduced into the fermenter during the fermentation process by means of the fluid, usually water, without endangering operating personnel or the environment.