Rotary Drum Dryer Regeneration with Split Heated Gas Flow
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Solution Overview
Problem
Existing compressor installations with dryers are inefficient due to high energy consumption and large, expensive heating elements required to raise the temperature of compressed gas for regeneration, especially in turbo compressors and low-pressure applications, leading to significant energy loss and increased costs.
Innovation Solution
A compressor installation with a dryer featuring a rotating drum and a regeneration zone divided into two subzones, where only the hotter portion of the compressed gas flow is heated, allowing for efficient drying without heating the entire gas flow, thereby reducing energy consumption and enabling a smaller, less expensive heating element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the temperature of compressed gas is raised by placing a heating element before guiding this gas through the regeneration zone, then the efficiency of the adsorption dryer is increased and a lower pressure dew point is achieved, but the current consumption is 8 to 15% of the nominal energy consumption of the compressor installation, which is relatively very high
Solution Approach 1:
The regeneration zone is divided into two subzones: a first subzone receiving hot compressed gas directly from the compressor, and a second subzone receiving additional heated gas. This segmentation allows selective heating of only the portion of gas that requires it, rather than heating the entire gas flow, thereby reducing overall energy consumption while still achieving the required pressure dew point.
Solution Approach 2:
Different portions of the gas flow receive different temperature treatments based on local requirements. The first subzone uses the naturally hot compressed gas without additional heating, while the second subzone receives supplemental heating. This local differentiation optimizes energy usage by applying heat only where necessary to achieve sufficient regeneration.
2Manufacturing precision
If the temperature of the compressed gas is raised by placing a heating element before guiding this gas through the regeneration zone, then the efficiency of the adsorption dryer is increased, but the heating element is large and expensive
Solution Approach 1:
The regeneration zone is divided into two subzones: a first subzone receiving hot compressed gas directly from the compressor, and a second subzone receiving additional heated gas. This segmentation allows selective heating of only the portion of gas that requires it, rather than heating the entire gas flow, thereby reducing overall energy consumption while still achieving the required pressure dew point.
Solution Approach 2:
Different portions of the gas flow receive different temperature treatments based on local requirements. The first subzone uses the naturally hot compressed gas without additional heating, while the second subzone receives supplemental heating. This local differentiation optimizes energy usage by applying heat only where necessary to achieve sufficient regeneration.
3Manufacturing precision
If the temperature of the compressed gas is raised by placing a heating element before guiding this gas through the regeneration zone, then the efficiency of the adsorption dryer is increased, but a smaller heating element can be used resulting in saving of energy and material costs
Solution Approach 1:
The regeneration zone is divided into two subzones: a first subzone receiving hot compressed gas directly from the compressor, and a second subzone receiving additional heated gas. This segmentation allows selective heating of only the portion of gas that requires it, rather than heating the entire gas flow, thereby reducing overall energy consumption while still achieving the required pressure dew point.
Solution Approach 2:
Different portions of the gas flow receive different temperature treatments based on local requirements. The first subzone uses the naturally hot compressed gas without additional heating, while the second subzone receives supplemental heating. This local differentiation optimizes energy usage by applying heat only where necessary to achieve sufficient regeneration.
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 enhances the efficiency of the drying process, lowers the pressure dew point, and results in substantial energy savings, leading to a more compact and cost-effective installation.
Implementation Method 1
the drying agent, present in the drying zone, extracts moisture from this gas
Implementation Method 2
this gas evaporates the moisture present in the drying agent by means of the compression heat in this gas
Data Source
AI summary
Compressor installation comprising a compressor (9) and a dryer (1) which are mutually connected via a pressure pipe (10), whereby the dryer (1) comprises a housing (2) with a drying zone (3) and a regeneration zone (4), as well as a rotating drum (5) with a drying agent (6), whereby the regeneration zone (4) comprises a first subzone (41) and a second subzone (42); whereby two regeneration conducts (14 and 15) connect to the pressure pipe (10), respectively a first regeneration conduit (14) which connects to an inlet of the first subzone (41) and through which compressed gas having a first temperature (T1) is guided, and a second regeneration conduit (15) which connects to an inlet of the second subzone (42); and, whereby the second regeneration conduit (15) comprises a heating element (16) for heating compressed gas flowing through said second regeneration conduit (15) to a second temperature (T2) which is higher than the first temperature (T1).