Dehumidifying Tower with Flash Distillation for Dust-Free Cooling
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Solution Overview
Problem
Conventional dehumidifying towers for moisture-containing exhaust gas produce recycled moisture liquids with solid dust entrainment, requiring complex and costly separation processes, and can lead to dust accumulation and reduced heat exchange efficiency in cooling devices.
Innovation Solution
A dehumidifying tower design incorporating a washing section, flash-distilling section, and condensing section, where the flash-distillation under negative pressure produces a clean recycled liquid and vapor, avoiding solid dust entrainment and enhancing heat exchange efficiency, with integrated vacuum flash-distillation and condensing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional washing and cooling tower is used to dehumidify moisture-containing exhaust gas, then the exhaust gas can be cooled and moisture condensed, but the recycled liquid contains solid dust entrainment requiring complex separation processes
Solution Approach 1:
The invention extracts the harmful solid dust from the exhaust gas stream before it enters the cooling process. By introducing a solid-liquid separator in the liquid circulation path, dust is continuously removed from the recycled liquid, preventing its accumulation and ensuring the recycled liquid remains clean without requiring complex external separation processes.
Solution Approach 2:
The patent introduces a solid-liquid separator as an intermediary device in the liquid circulation system. This separator acts as a mediator between the cooling tower and the liquid storage tank, automatically removing dust particles from the recycled liquid and preventing them from re-entering the cooling process.
2Temperature
If exhaust gas is cooled in a conventional tower, then moisture condenses, but dust accumulates in the cooling liquid and blocks the cooling device
Solution Approach 1:
The invention implements continuous dust removal from the recycled liquid through the solid-liquid separator. This ensures the cooling liquid remains clean throughout continuous operation, preventing dust accumulation that would otherwise block the cooling device and maintain reliable operation indefinitely.
Solution Approach 2:
The cooling system performs self-cleaning through the integrated solid-liquid separator. The separator automatically removes dust from the circulating liquid without external intervention, allowing the cooling device to maintain its performance and reliability through self-service dust removal.
3Productivity
If a conventional washing and cooling tower is used, then dehumidification is achieved, but large work area and multiple apparatuses are required
Solution Approach 1:
The invention merges the solid-liquid separation function directly into the liquid circulation system of the washing and cooling tower. By integrating the separator with the existing liquid storage tank and circulation pump, the system achieves both dehumidification and dust removal in a single compact unit, reducing the need for separate apparatuses and work area.
Solution Approach 2:
The recycled liquid in the system serves multiple functions: it cools the exhaust gas, condenses moisture, and is continuously purified of dust by the separator. This multi-functional use of the same liquid stream eliminates the need for separate cleaning systems and reduces the overall footprint of the dehumidification apparatus.
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 solution results in a clean recycled liquid and vapor, reducing the need for additional separation processes and minimizing dust-related issues, while improving heat exchange efficiency and requiring less operational space.
Implementation Method 1
cool the exhaust gas and condense at least a portion of moisture in the exhaust gas into liquid
Implementation Method 2
receiving and flash-distilling the cooling liquid that has been used in the washing section to produce a cooled cooling liquid and a cooling liquid vapor
Implementation Method 3
receiving and condensing the cooling liquid vapor produced by the flash-distillation
Data Source
AI summary
A dehumidifying tower having a washing section, a flash-distilling section, and a condensing section. In the washing section, exhaust gas is washed with a cooling liquid to remove at least a portion of solid dust entrained in the exhaust gas, cool the exhaust gas, and condense at least a portion of moisture in the exhaust gas into liquid. The flash-distilling section flash-distills the cooling liquid used in the washing section to produce a cooled cooling liquid and a cooling liquid vapor. Cooling liquid produced by flash-distillation enters the washing section. The flash-distilling section is in gas-phase isolation from the washing section. The condensing section condenses the cooling liquid vapor produced by flash-distillation. The condensing section is configured to be in gas-phase communication with and liquid-phase isolation from the flash-distilling section, and be in both gas-phase and liquid-phase isolation from the washing section.