Solvent Separation Apparatus with Segmented Exhaust Pathways
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Solution Overview
Problem
Existing solvent separation systems face issues with solvent adherence to exhaust pathways, leading to decreased purification efficiency and the need for frequent maintenance, which reduces the operation rate of heat treatment apparatuses.
Innovation Solution
A solvent separation method and apparatus that involves rotating an impeller to introduce gas with volatilized solvents into a storage space, cooling and devolatilizing the solvents using a collection face with a lower surface temperature, and applying an electric field to separate remaining solvents, facilitating easy solvent collection and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cooler is used to devolatilize solvent from exhaust atmosphere, then solvent removal efficiency is improved, but solvent adheres to exhaust pathways requiring frequent maintenance
Solution Approach 1:
The exhaust pathway is segmented into multiple channels: a first exhaust pathway for purified gas and a second exhaust pathway for gas containing devolatilized solvent. This segmentation prevents solvent-adhered gas from contacting the cooler and exhaust duct, eliminating solvent accumulation while maintaining removal efficiency.
Solution Approach 2:
The devolatilized solvent is extracted from the exhaust atmosphere in a dedicated separation chamber before the gas enters the exhaust pathway. By removing the solvent-containing portion separately, the cooler and exhaust duct are protected from solvent adherence, reducing maintenance needs.
2Quantity of substance
If solvent is discharged to the outside of heat treatment apparatus, then solvent concentration inside apparatus is reduced, but environmental pollution increases
Solution Approach 1:
The solvent undergoes phase transition from vapor to liquid through devolatilization in the separation chamber. This phase change enables the solvent to be collected and removed in liquid form, preventing its discharge to the environment while maintaining low solvent concentration inside the heat treatment apparatus.
Solution Approach 2:
The harmful effect of solvent discharge is converted into a beneficial process by capturing the devolatilized solvent in the separation chamber. The solvent that would otherwise pollute the environment is instead collected and removed through the second exhaust pathway, transforming an environmental hazard into a controlled removal process.
3Reliability
If maintenance is performed by disassembling exhaust pathways, then solvent accumulation is removed, but operation rate of heat treatment apparatus is reduced
Solution Approach 1:
The exhaust system is segmented into two separate pathways: one for purified gas that does not require maintenance, and another for solvent-containing gas that is isolated from the main exhaust duct. This segmentation allows the primary exhaust pathway to operate continuously without disassembly, maintaining high operation rates while still enabling maintenance when needed.
Solution Approach 2:
A separation chamber acts as an intermediary between the cooler and the exhaust pathway. This intermediary component captures devolatilized solvent before it can adhere to the exhaust duct, serving as a maintainable element that protects the main exhaust system from solvent accumulation, thereby reducing the frequency and extent of maintenance required.
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 system effectively removes solvents from the exhaust atmosphere, reducing maintenance burdens and maintaining high operation rates by preventing solvent adherence to equipment, thus enhancing purification efficiency.
Implementation Method 1
cooling and devolatilizing the volatilized solvent introduced into the storage space by a collection face which has been cooled so as to have a surface temperature lower than the temperature of the gas
Implementation Method 2
cooling and devolatilizing the volatilized solvent introduced into the storage space by a collection face which has been cooled so as to have a surface temperature lower than the temperature of the gas
Implementation Method 3
applying an electric field to separate remaining solvents
Data Source
AI summary
Provided are a solvent separation method, a solvent separation apparatus, and a solvent separation system that make it possible to easily collect a solvent removed from an exhaust atmosphere and that make it possible to easily carry out maintenance of exhaust gas pathways. An impeller placed in a storage space of a casing is rotated to introduce a gas including a volatilized solvent from an inlet of the casing into the storage space, and the volatilized solvent is cooled and devolatilized by a collection face that has been cooled so as to have a surface temperature lower than the temperature of the gas, to thereby separate the solvent from the gas.