Industrial Evaporation Apparatus with Flow Path Control
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Solution Overview
Problem
Existing industrial evaporation apparatuses face challenges in efficiently evaporating lower boiling point materials from liquids with high viscosity, leading to issues like degeneration, contamination, and poor stability during prolonged operations, especially when the liquid resides for extended periods, causing problems like discoloration and contamination with solid foreign materials.
Innovation Solution
An industrial evaporation apparatus where a liquid with a lower boiling point flows down along the external surface of guides without a heat source, featuring a specific structure with a flow path controlling member, guides, and a perforated plate, which reduces 'dead space' and ensures efficient evaporation and polymerization, allowing for continuous operation without thermal degeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the liquid is allowed to fall down freely in the evaporation zone, then the residence time is reduced, but the evaporating efficiency becomes poor and the strands sway and fuse
Solution Approach 1:
The evaporation zone is segmented into multiple sections with guides arranged in sequences. The liquid flows down through multiple stages rather than falling freely in one section, which increases the effective evaporation time while maintaining efficient heat transfer through controlled film formation on each guide surface.
Solution Approach 2:
The invention transitions from one-dimensional free falling to multi-dimensional controlled flow along guide surfaces. By arranging guides in sequences and allowing the liquid to flow down along external surfaces rather than free falling, the system adds spatial control dimensions that simultaneously extend residence time and maintain evaporating efficiency.
2Productivity
If the liquid resides for extended periods in the apparatus, then complete evaporation can be achieved, but thermal degeneration, discoloration, and contamination occur
Solution Approach 1:
The liquid continuously flows down along the guide surfaces in a controlled manner, ensuring continuous exposure to evaporation conditions without stagnation. This continuous motion prevents thermal degeneration while maintaining complete evaporation by eliminating dead zones where liquid would otherwise reside too long.
Solution Approach 2:
The guides serve as intermediary surfaces that facilitate controlled liquid flow and heat transfer. By mediating the evaporation process through guide surfaces rather than direct heating of stationary liquid, the system achieves complete evaporation while preventing thermal degeneration through continuous motion and controlled exposure.
3Productivity
If a heat source is applied to the tubes for evaporation, then the evaporation rate increases, but thermal degeneration of the liquid occurs
Solution Approach 1:
The invention replaces direct thermal heating with a mechanical flow control system. Instead of applying heat sources to tubes, the system uses gravity-driven flow along guide surfaces to control the evaporation process, maintaining high evaporation rates through continuous motion while preventing thermal degeneration.
Solution Approach 2:
The system changes the key parameter from temperature control to flow rate control. By controlling the liquid flow rate down the guides rather than controlling the temperature through heat sources, the system achieves high evaporation rates while preventing thermal degeneration through parameter transformation.
4Object-affected harmful factors
If the liquid flows down along external surfaces of guides, then thermal degeneration is prevented, but the apparatus complexity increases
Solution Approach 1:
The guides are designed as thin rod-shaped structures that create thin liquid films during flow. This thin film configuration prevents thermal degeneration by ensuring continuous exposure and rapid evaporation, while the simple rod-shaped guide structures minimize apparatus complexity compared to more elaborate heating systems.
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 apparatus enables stable and efficient evaporation of high-viscosity liquids, preventing degeneration and contamination, achieving high-purity and high-performance polymer production at industrial scales without discoloration or molecular weight variation, with the ability to produce not less than 1 ton/hr for prolonged periods.
Implementation Method 1
a liquid containing a material having a lower boiling point than that of the liquid is made to flow down along an external surface of a guide
Implementation Method 2
during which time the lower boiling point material is evaporated
Data Source
AI summary
An industrial evaporation apparatus having a specified structure in which there are guides that do not themselves have a heat source, a flow path controlling member having a function of making the liquid fed onto a perforated plate from a liquid receiving port flow mainly from a peripheral portion toward a central portion of the perforated plate is provided in a liquid feeding zone, and formula (1) to (5), or formula (1) to (10), or formula (1) to (12), are satisfied.