Gas Sorption System with Pre-Processing Unit for Ultra-Low Dew Point
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Solution Overview
Problem
Current gas sorption systems face challenges in achieving low dew points, energy efficiency, and stable air treatment for removing moisture and volatile organic compounds, with existing solutions requiring high regeneration energy and complex setups.
Innovation Solution
A gas sorption system with a main sorption unit, process air circuit, regeneration air circuit, and purge air circuit, where a pre-processing unit heats and/or dehumidifies the regeneration airflow, allowing the purge airflow to flow in the same direction as the regeneration airflow, optimizing rotor regeneration and energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pre-processing unit heats and/or dehumidifies the regeneration airflow, then the rotor regeneration effectiveness is improved and ultra-low dew points are achieved, but the device complexity increases
Solution Approach 1:
The pre-processing unit performs heating and/or dehumidification of the regeneration airflow before it enters the sorption rotor. This preliminary treatment ensures the regeneration air is optimally conditioned to achieve ultra-low dew points in the process airflow, while avoiding the need for more complex post-processing systems
Solution Approach 2:
The system divides the regeneration process into distinct stages: pre-processing of the regeneration airflow (heating and/or dehumidification), followed by the main sorption process. This segmentation allows each component to be optimized independently, achieving high dew point reduction effectiveness while maintaining manageable system complexity
2Loss of energy
If purge airflow flows in the same direction as regeneration airflow through the rotor, then energy consumption is reduced and air treatment efficiency is enhanced, but the device complexity increases
Solution Approach 1:
The purge airflow and regeneration airflow are merged into a single flow path through the sorption rotor, flowing in the same direction. This combination allows the purge function (removing saturated sorbent material) and regeneration function (heating the sorbent) to be performed simultaneously in one pass, reducing energy consumption and simplifying the airflow control system compared to separate counter-flow paths
Solution Approach 2:
The single airflow path serves multiple functions: it simultaneously performs purification of the sorbent material, regeneration of the sorption capacity, and removal of captured contaminants. This multi-functionality reduces the need for separate systems and minimizes energy loss while achieving enhanced air treatment efficiency
3Productivity
If high temperature is used for regeneration of desiccant material, then the dehumidifying capacity is improved, but the energy consumption increases
Solution Approach 1:
The system optimizes the temperature parameter of the regeneration airflow by using a pre-processing unit that heats the air to the required temperature before it contacts the sorbent material. This controlled parameter change ensures sufficient heat for effective regeneration and high dehumidifying capacity while minimizing energy waste through precise temperature management and heat recovery from the purge stream
Solution Approach 2:
The system recovers energy from the warm purge airflow that exits the rotor and uses it to pre-heat the incoming regeneration airflow in the pre-processing unit. This heat recovery reduces the additional energy required to achieve the high temperatures needed for effective sorbent regeneration, thereby maintaining high dehumidifying capacity while reducing overall energy consumption
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 configuration achieves ultra-low dew points, reduces energy consumption, and enhances air treatment efficiency for carbon dioxide, ammonia, hydrogen sulphide, and volatile organic compounds, enabling stable and effective air processing.
Implementation Method 1
a pre-processing unit arranged to heat and/or to dehumidify the regeneration airflow upstream of the sorption unit
Implementation Method 2
a pre-processing unit arranged to heat and/or to dehumidify the regeneration airflow upstream of the sorption unit
Implementation Method 3
a sorption rotor arranged to treat the process airflow by removing a target gas from the process airflow
Implementation Method 4
a main regeneration air circuit arranged to conduct a main regeneration airflow through the sorption rotor
Data Source
AI summary
A gas sorption system for removal of moisture, carbon dioxide, ammonia, hydrogen sulfide, volatile organic compounds or mixtures thereof from air includes a main sorption unit; a main process air circuit arranged to conduct a main process airflow through a main sorption rotor in the main sorption unit; a main regeneration air circuit arranged to conduct a main regeneration airflow through the main sorption rotor in the main sorption unit; and a purge air circuit arranged to conduct a purge airflow through the main sorption rotor in the main sorption unit, the purge airflow being configured to flow through the main sorption rotor in the same direction as the main regeneration airflow. A pre-processing unit is connected to the main regeneration air circuit upstream of the main sorption unit and is arranged to heat and/or to dehumidify the main regeneration airflow upstream of the main sorption unit.