VOC Condensing System Using Phase Change Heat Storage
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Solution Overview
Problem
Conventional volatile organic compound (VOC) condensing systems face inefficiencies in drying filters after the desorption process, leading to prolonged drying times and reduced VOC removal efficiency due to residual cooling liquids.
Innovation Solution
Incorporating a condensation heat storage unit using phase change materials to store VOC condensation heat, which is then utilized by a drying control unit to expedite the drying process, either in a forward or reverse direction, and controlling the inflow and pressurization of external air to optimize drying efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-temperature steam is supplied to desorb VOC from the filter, then VOC desorption efficiency is improved, but drying time increases due to residual cooling liquid
Solution Approach 1:
The patent recovers the cooling liquid that remains in the filter after desorption and reuses it as cooling media in the condensation process. This converts the harmful residual liquid into a beneficial resource, reducing waste while maintaining efficient VOC condensation. The cooling liquid is collected from the filter, transferred to a cooling liquid storage tank, and then pumped back to the condensation unit to cool condensed VOC.
Solution Approach 2:
The patent changes the temperature parameter of the steam during desorption by controlling the steam supply temperature and flow rate. By optimizing these parameters, the system achieves effective VOC desorption while minimizing the amount of residual cooling liquid that needs to be evaporated during the drying phase, thus reducing drying time.
2Reliability
If drying time is extended to remove residual cooling liquid, then filter readiness for next adsorption is improved, but VOC removal efficiency decreases
Solution Approach 1:
The residual cooling liquid in the filter is converted into a useful resource by recycling it to the condensation unit. This eliminates the need for extended drying time while ensuring the filter is ready for the next adsorption cycle, as the liquid is removed and reused productively.
Solution Approach 2:
The system maintains continuous operation by immediately recycling the cooling liquid to the condensation unit without interrupting the adsorption-desorption cycle. This continuous flow ensures that the filter is rapidly prepared for the next cycle while the cooling liquid performs its useful function of condensing VOC in real-time.
3Productivity
If condensation heat storage unit with phase change material is used, then drying efficiency is improved, but device complexity increases
Solution Approach 1:
The patent introduces a condensation heat storage unit containing phase change material (PCM) that absorbs and stores heat during the condensation of VOC. The PCM undergoes phase transition (e.g., solid-liquid) to store thermal energy, which is then released during the drying phase to accelerate evaporation of residual cooling liquid, significantly improving drying efficiency without requiring complex external heating systems.
Solution Approach 2:
The phase change material in the heat storage unit automatically releases stored thermal energy during the drying phase without requiring external control or additional energy input. The system self-regulates the drying process by utilizing the inherent thermal properties of the PCM, simplifying control mechanisms while maintaining high drying efficiency.
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 significantly reduces the drying time of filters after desorption, thereby enhancing VOC removal efficiency by leveraging the stored condensation heat.
Implementation Method 1
condensation heat storage unit for storing VOC condensation heat being generated in the adsorption-desorption unit by using phase change material (PCM)
Implementation Method 2
storing VOC condensation heat being generated in the adsorption-desorption unit
Implementation Method 3
drying the adsorption-desorption unit after the desorption process by using the condensation heat stored in the condensation heat storage unit
Data Source
AI summary
A volatile organic compound condensation system and method thereof for enhancing drying efficiency of a filter using VOC condensation heat including high-temperature steam condensation heat are disclosed. A volatile organic compound condensing system according to the present invention is characterized by comprising: an adsorption-desorption unit repeating an adsorption process of adsorbing volatile organic compound (VOC) from a supply gas and a desorption process of desorbing the adsorbed VOC by supplying high-temperature steam to the VOC adsorbed by the adsorption process; a condensation heat storage unit for storing VOC condensation heat being generated in the adsorption-desorption unit by using phase change material (PCM); and a drying control unit that dries the adsorption-desorption unit after the desorption process by using the condensation heat stored in the condensation heat storage unit.