Venturi Ejector Flow Control for Compressed Gas Drying
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Solution Overview
Problem
Existing drying devices for compressed gas face challenges in efficiently recombining regeneration gas with compressed gas to be dried, due to pressure drops that require external forces and result in energy losses.
Innovation Solution
The proposed drying device incorporates an adjustable venturi ejector and a bypass pipe with a valve to regulate the flow of regeneration gas, allowing for controlled recombination with the compressed gas while minimizing pressure drops and energy losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a venturi ejector is used to recombine regeneration gas with compressed gas to be dried, then the regeneration gas can be recombined with the compressed gas without loss, but a relatively large pressure drop occurs resulting in energy loss
Solution Approach 1:
The patent applies parameter changes by adjusting the flow rate of compressed gas through the venturi ejector to optimize the balance between recombination efficiency and pressure drop. By controlling operational parameters rather than changing the fundamental mechanism, the system achieves effective regeneration gas recombination while minimizing energy loss from excessive pressure drops.
2Productivity
If the flow through the venturi ejector is increased to improve regeneration gas recombination, then more regeneration gas can be recombined, but the pressure drop and associated energy loss increase
Solution Approach 1:
The patent implements dynamics by making the venturi ejector flow adjustable rather than fixed. This allows the system to dynamically optimize the balance between regeneration gas recombination efficiency and energy loss from pressure drops, adapting to different operational conditions and desiccant regeneration requirements.
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
By regulating the flow through the venturi ejector, the device ensures efficient regeneration of the desiccant while maintaining low pressure drops and associated energy losses, optimizing the drying process.
Implementation Method 1
a venturi ejector can be used, which will generate an underpressure when the compressed gas to be dried flows through it. Under the influence of this underpressure, the regeneration gas can be sucked in as it were by the venturi ejector and thus recombined with the compressed gas to be dried.
Implementation Method 2
in the regeneration pipe heating means are provided for the regeneration gas
Implementation Method 3
Regenerable desiccant refers to a desiccant that is able to extract moisture from a gas by means of adsorption
Data Source
AI summary
Drying device for drying compressed gas which includes at least two vessels with regenerable desiccant and an adjustable valve system which is such that a vessel can dry compressed gas, while the other vessel is being regenerated, whereby by regulating the valve system, the vessels can each in turn dry gas. The drying device includes a regeneration pipe for supplying a regeneration gas which runs from an outlet for dried gas to the valve system, and in which heating means are provided, whereby the drying device is provided with a return pipe for returning the regeneration gas to an inlet, running from the valve system to an inlet pipe which connects to said inlet and in which a venturi ejector is mounted, to which said return pipe is connected, and that regulating means are provided for regulating the flow of gas going through the venturi ejector.