Solid-Liquid Separator Heat Exchange Cycle Optimization
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Solution Overview
Problem
Existing solid-liquid separation technologies using substance A, such as DME, face challenges with inefficient heat exchange, high maintenance frequency due to impurities, and difficulty in accurately controlling the substance A amount in the cycle, leading to reduced efficiency and frequent maintenance.
Innovation Solution
A solid-liquid separator and method utilizing a closed system with a compressor, shell and tube heat exchangers, and a pump to manage the state change of substance A, along with an external temperature control mechanism and magnetic separation for efficient dehydration and deoiling, addressing the inefficiencies and maintenance issues by optimizing the cycle and substance A amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external heat medium is used for heat exchange, then heat exchange function is provided, but heat exchange efficiency is low and maintenance frequency increases due to impurities and clogging
Solution Approach 1:
The patent extracts the heat exchange function from the external medium side and relocates it to the internal circulation side by using the circulation tank and pump system. The heat exchanger now exchanges heat between the circulating liquid and the processed material itself, eliminating exposure to external impurities while maintaining heat exchange efficiency.
Solution Approach 2:
The patent introduces the circulation tank and pump as intermediary components between the heat exchanger and the processed material. This intermediary closed-loop system allows heat exchange to occur without direct contact with external media, preventing clogging and contamination while maintaining efficient heat transfer.
2Productivity
If the amount of substance A in the cycle is increased, then dehydration and deoiling efficiency is improved, but unfavorable liquid phase is generated in heat exchanger reducing efficiency
Solution Approach 1:
The patent makes the amount of substance A dynamic and adjustable through the pump circulation system. The controller can adjust the pump operation to maintain the optimal amount of substance A in the cycle, allowing the system to adapt to different processing conditions while preventing the formation of unfavorable liquid phases in the heat exchanger.
Solution Approach 2:
The patent implements a feedback control system where the controller monitors the state of substance A and the processing results, then adjusts the pump circulation to maintain the optimal amount of substance A. This feedback mechanism ensures high dehydration and deoiling efficiency while preventing heat exchanger inefficiency from excessive substance A accumulation.
3Loss of energy
If the amount of substance A in the cycle is decreased, then heat exchange efficiency is improved, but gas-liquid two-phase flow is generated reducing cycle efficiency
Solution Approach 1:
The patent uses the adjustable pump circulation system to dynamically maintain the substance A amount at levels that prevent gas-liquid two-phase flow formation. The system can adapt the circulation rate to ensure sufficient liquid phase presence in the heat exchanger, maintaining both heat exchange efficiency and overall cycle efficiency.
Solution Approach 2:
The controller monitors cycle operation parameters and adjusts pump circulation to maintain adequate substance A levels. This feedback control prevents gas-liquid two-phase flow conditions that would reduce cycle efficiency, while avoiding excessive substance A accumulation that would harm heat exchange efficiency.
4Reliability
If oil-free compressor is used for substance A state change, then dehydration and deoiling function is achieved, but maintenance frequency is high due to short maintenance interval
Solution Approach 1:
The patent extracts substance A from the compression function and uses it only for dehydration and deoiling. By separating the compression function (using air compressor with oil separator) from the dehydration/deoiling function (using circulated substance A), the system eliminates the need for oil-free compressors while maintaining the required separation function.
Solution Approach 2:
The patent introduces air as an intermediary medium for compression, separated from substance A through the oil separator. This intermediary approach allows the use of standard air compressors instead of specialized oil-free compressors, significantly extending maintenance intervals while preserving the dehydration and deoiling functionality.
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 enables efficient operation with extended maintenance intervals, precise control of substance A, and enhanced heat exchange efficiency, reducing the formation of unfavorable phases and maintaining high separation performance.
Implementation Method 1
a first heat exchanger that exchanges condensation heat of the substance B and evaporation heat of the substance A
Implementation Method 2
evaporation heat of the substance A
Implementation Method 3
condensation heat of the substance B
Implementation Method 4
a second heat exchanger that exchanges evaporation heat of the substance B and condensation heat of the substance A
Implementation Method 5
evaporation heat of the substance B
Implementation Method 6
condensation heat of the substance A
Implementation Method 7
a compressor that compresses the substance B
Implementation Method 8
expansion means that, decompresses the substance B which is condensed
Implementation Method 9
a pump that circulates the substance A
Implementation Method 10
a substance A capable of dissolving water and oil
Implementation Method 11
a treatment tank in which the condensed substance A which is condensed in the second heat exchanger after the substance A evaporates while separating from water or oil in the first heat exchanger
Data Source
AI summary
The solid-liquid separator that uses the substance A capable of dissolving water and oil, and performs dehydration and deoiling from an object to be treated by bringing a mixture of water and a solid, oil and a solid, or water, oil and a solid that is an object to be treated, and the substance A in a liquid state into contact with each other, and subsequently evaporating the substance A, includes a substance B that circulates while causing change of state in a closed system, a compressor that compresses the substance B, a first heat exchanger that exchanges condensation heat of the substance B and evaporation heat of the substance A, an expansion valve that decompresses the substance B which is condensed, and a second heat exchanger that exchanges evaporation heat of the substance B and condensation heat of the substance A.