Organic Polymer Adsorbent Pore Structure for Dehumidification
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Solution Overview
Problem
Inorganic adsorbents used in desiccant dehumidifiers have poor mechanical properties, leading to cracking or crushing due to volume changes during adsorption and desorption, and they also have limited specific surface area and slow dehumidification speed.
Innovation Solution
An organic polymer adsorbent is developed with controlled pore size and specific surface area, using toluene as a pore generator, which enhances mechanical properties and adsorption/desorption performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If inorganic adsorbent is used to increase specific surface area by reducing pore size, then adsorption capacity is improved, but dehumidification speed decreases
Solution Approach 1:
The patent applies local quality by creating a hierarchical pore structure with different pore sizes distributed throughout the adsorbent. Small pores (2-10 nm) provide high specific surface area for adsorption capacity, while large pores (10-100 nm) provide fast transport pathways for dehumidification speed. This local differentiation of pore functions resolves the contradiction between adsorption capacity and dehumidification speed.
Solution Approach 2:
The patent transitions from a single-pore-size structure to a multi-scale pore structure by introducing a second dimension of pore size classification. The pore size distribution spans from 2 nm to 100 nm, creating a dimensional hierarchy where different pore sizes serve different functions: small pores for adsorption and large pores for transport, thereby resolving the trade-off between capacity and speed.
2Quantity of substance
If inorganic adsorbent is used for strong adsorption of water molecules, then adsorption capacity is improved, but regeneration temperature increases
Solution Approach 1:
The patent applies local quality by functionalizing different regions of the pore structure with specific organic groups. Hydrophilic groups enhance adsorption capacity in certain regions, while the overall organic polymer structure enables easier desorption at lower temperatures compared to inorganic adsorbents. This localized functional differentiation allows strong adsorption without requiring high regeneration temperatures.
Solution Approach 2:
The patent changes the chemical parameter of the adsorbent material from inorganic to organic polymer based. This parameter change fundamentally alters the adsorption mechanism, enabling strong adsorption capacity through organic functional groups while allowing regeneration at lower temperatures due to the different bonding characteristics of organic polymers compared to inorganic materials.
3Reliability
If inorganic adsorbent is used for moisture adsorption and desorption, then dehumidification function is achieved, but mechanical properties deteriorate
Solution Approach 1:
The patent changes the material parameter from inorganic to organic polymer based adsorbent. This parameter change fundamentally improves mechanical properties because organic polymers are inherently more flexible and less brittle than inorganic materials. The polymer chains can accommodate volume changes during adsorption-desorption cycles without cracking, while maintaining reliable dehumidification function.
Solution Approach 2:
The patent employs composite materials by creating a porous organic polymer structure that combines the advantages of porosity (for dehumidification function) with polymer flexibility (for mechanical strength). The cross-linked polymer network provides structural integrity while the porous structure enables moisture adsorption, resolving the contradiction between function and mechanical properties.
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 organic polymer adsorbent exhibits improved mechanical stability, increased adsorption capacity, and enhanced desorption efficiency, addressing the limitations of inorganic adsorbents while reducing energy requirements for regeneration.
Implementation Method 1
an adsorbent is a material that typically includes pores, and a capillary phenomenon is applied to the adsorbent such that a concentration of moisture (gas phase) in a solid (adsorbent) is higher than that of moisture in the air. This is referred to as adsorption.
Implementation Method 2
Additionally, moisture that is adsorbed into the surface of the adsorbent is introduced into the solid through the surface layer of the solid. This is referred to as absorption.
Implementation Method 3
when high temperature is supplied through the process of regeneration, the phenomenon of desorption in which vapor and gas molecules adsorbed into an adsorbent are separated occurs.
Data Source
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AI summary
The present disclosure relates to an organic polymer adsorbent, a composition for an organic polymer adsorbent and a method of manufacturing thereof and more specifically, to an organic polymer adsorbent that is used for a ventilation apparatus such as a desiccant dehumidifier and the like. According to the present disclosure, the adsorbent uses an organic polymer adsorbent as a material, thereby ensuring mechanical stability and durability, and the adsorbent uses toluene as a pore generator such that inner pores that are connected with each other, and specific surface areas and sizes of the adsorbent may be controlled. Thus, the adsorbent of the present disclosure may have an adsorption ability more excellent than that of other organic polymer adsorbents containing a conventional salt-type carboxy group and may have a significantly improved desorption ability, thereby ensuring enhanced energy efficiency.