Configurable Aeration Device for Bioreactor Oxygen Transfer
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Solution Overview
Problem
Existing aeration devices for bioprocessing installations, such as bioreactors, face challenges in providing an efficient oxygen supply and preventing unintentional filling or clogging, particularly due to the limitations of conventional ring spargers and microspargers in adapting to various biotechnological processes and stages.
Innovation Solution
A configurable aeration device with adjustable gas outlet ports and an adjusting mechanism, allowing for manual or automatic control of discharge characteristics like velocity, direction, and composition, and incorporating features like hydrophobic coatings or membranes to prevent clogging and adapt to different biotechnological processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ring spargers with large discharge openings are used, then gas flow rate is high, but oxygen transfer efficiency is insufficient
Solution Approach 1:
The aeration device divides the gas outlet into multiple types of discharge openings with different sizes (first type with larger openings, second type with smaller openings). This segmentation allows simultaneous achievement of high gas flow rate (through first type openings) and high oxygen transfer efficiency (through second type openings), resolving the contradiction between gas flow rate and oxygen transfer efficiency.
2Reliability
If microspargers with small discharge openings are used, then oxygen transfer efficiency is high, but gas flow rate is limited and clogging occurs
Solution Approach 1:
The aeration device segments discharge openings into multiple types, where second type openings with smaller dimensions provide high oxygen transfer efficiency, while first type openings with larger dimensions maintain high gas flow rate and prevent clogging. This segmentation resolves the contradiction between oxygen transfer efficiency and gas flow rate.
Solution Approach 2:
The aeration device combines multiple types of discharge openings in a single device, making it universally applicable for both high oxygen transfer efficiency requirements and high gas flow rate requirements. This multi-functionality allows the device to handle various biotechnological processes without clogging, resolving the contradiction between oxygen transfer efficiency and gas flow rate.
3Device complexity
If a single type of aeration device is used, then device complexity is low, but adaptability to different biotechnological processes is limited
Solution Approach 1:
The aeration device incorporates multiple types of discharge openings (first type with larger openings, second type with smaller openings) in a single housing, enabling the device to adapt to different biotechnological processes and stages. This multi-functionality increases adaptability while maintaining relatively simple device structure, resolving the contradiction between device complexity and adaptability.
Solution Approach 2:
The aeration device can dynamically adapt to different process requirements by utilizing different types of discharge openings based on the specific biotechnological process stage. The device transitions from using primarily first type openings during early stages to incorporating second type openings during later stages, resolving the contradiction between device complexity and adaptability.
4Productivity
If gas outlet ports are exposed to liquid biological medium, then aeration function is effective, but unintentional filling and clogging occur
Solution Approach 1:
The aeration device incorporates a membrane structure that allows gas to pass through while preventing liquid biological medium from entering the internal channels. This flexible film structure maintains effective aeration function while preventing unintentional filling and clogging, resolving the contradiction between aeration function and reliability.
Solution Approach 2:
The aeration device utilizes porous membrane structures at the gas outlet ports that permit gas diffusion into the liquid biological medium while blocking liquid from entering the internal channels. This porous material structure maintains effective aeration function while preventing unintentional filling and clogging, resolving the contradiction between aeration function and reliability.
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 device effectively adapts to various biotechnological processes by controlling gas discharge characteristics, preventing unintentional filling and clogging, and ensuring efficient oxygen supply, thus enhancing the operational flexibility and efficiency of bioprocessing installations.
Implementation Method 1
the inner surface of one or more gas outlet ports of the housing and/or of at least a section of one or more aeration channels of the housing is provided with a coating or insert
Implementation Method 2
the housing comprises one or more aeration channels in its interior, wherein the housing further comprises one or more gas inlet ports, via each of which a gas can be introduced into at least one aeration channel of the housing, and wherein the housing further comprises a plurality of gas outlet ports, via each of which the gas can be discharged from the respective aeration channel to the outside of the aeration device
Data Source
AI summary
Various embodiments relate to an aeration device for a bioprocessing installation, in particular a bioreactor, comprising a housing, wherein the housing comprises one or more aeration channels in its interior, wherein the housing further comprises one or more gas inlet ports, via each of which a gas can be introduced into at least one aeration channel of the housing, and wherein the housing further comprises a plurality of gas outlet ports, via each of which the gas can be discharged from the respective aeration channel to the outside of the aeration device. It is proposed that the aeration device is configurable with respect to a predetermined discharge of gas via the gas outlet ports.