Jet Pump Vacuum System for Heat Transfer Oil Degassing
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Solution Overview
Problem
Thermal oil systems face operational reliability issues due to the formation of volatile 'low boilers' which vaporize and ignite at low temperatures, posing safety risks and causing cavitation in pumps, necessitating a method to minimize low-boiler content.
Innovation Solution
A heat transfer oil system incorporating a vacuum pump designed as a jet pump to separate and liquefy gaseous low boilers, utilizing a jet pump to create a reduced pressure in the condensation device, ensuring efficient throughput and recirculation of media without thermal oil loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional separator is used to remove volatile components, then low-boiler content is reduced, but the system complexity increases and treatment performance is limited
Solution Approach 1:
The jet pump extracts gaseous low boilers from the separator and transports them to the condensation device, separating the removal function from the separator itself. This extraction approach enhances reliability by actively removing volatile components while keeping the separator design simple.
Solution Approach 2:
The jet pump acts as an intermediary device between the separator and condensation device, facilitating the transport of gaseous low boilers through pressure differential. This mediator approach improves treatment performance without requiring direct integration that would increase system complexity.
2Reliability
If a spray deaerator is used to separate volatile components, then low-boiler content is reduced, but treatment performance may be insufficient under high load conditions
Solution Approach 1:
The jet pump operates continuously to transport gaseous low boilers from the separator to the condensation device, ensuring uninterrupted removal of volatile components. This continuous action maintains high treatment performance even under varying load conditions.
Solution Approach 2:
The system utilizes pressure differential as the driving parameter for the jet pump, allowing adaptive transport of gases based on system conditions. This parameter-based control enables the system to maintain treatment performance across different operational loads.
3Productivity
If multiple separate devices are used for separation and condensation, then treatment performance is improved, but device complexity increases
Solution Approach 1:
The jet pump integrates the functions of gas transport and pressure regulation into a single device, connecting the separator and condensation device. This merging approach enables multiple treatment functions while avoiding the complexity of fully integrated multi-functional equipment.
Solution Approach 2:
The jet pump serves multiple functions: transporting gaseous low boilers, creating pressure differential, and facilitating continuous flow between devices. This multi-functionality improves treatment performance by coordinating separation and condensation without requiring separate dedicated devices for each function.
4Productivity
If a jet pump is added to transport gases, then treatment performance is maximized, but device complexity increases
Solution Approach 1:
The jet pump utilizes the kinetic energy of the liquid stream to generate the pressure differential needed for gas transport, eliminating the need for additional power sources or complex control systems. This self-service approach maximizes treatment performance while minimizing the increase in device complexity.
Solution Approach 2:
The jet pump employs hydraulic principles to transport gaseous low boilers using the momentum of the liquid flow. This pneumatic-hydraulic approach enables efficient gas-liquid separation and transport without mechanical moving parts, reducing complexity while maintaining high treatment performance.
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
This design enhances the operational reliability of the heat transfer oil system by maximizing treatment performance, preventing overload from volatile components and maintaining a high flash point, thus extending the service life and ensuring safety.
Implementation Method 1
a jet pump (9) which is designed to ensure that gaseous low boilers pass from the gas space of the separating device (10) into the condensation device (16)
Implementation Method 2
wherein gaseous volatile components of the heat transfer oil of the processing stream generated by means of the separating device can be liquefied by means of the condensing device of the processing device
Data Source
Figure 1
Figure 2
AI summary
A heat transfer oil system (1) has an oil supply circuit (2) in which a supply stream of heat transfer oil circulates. A treatment device (6) for treating the heat transfer oil circulating in the oil supply circuit (2) is connected in parallel to the oil supply circuit (2) and has a separating device (10) and a condensing device (16). A treatment stream of heat transfer oil to be treated, branched off from the supply stream, can be fed to the separating device (10) of the treatment device (6). Gaseous, volatile components of the heat transfer oil in the treatment stream, generated by the separating device (10), can be liquefied by means of a condensing device (16) of the treatment device (6).A gas chamber (14) of the separation device (10) receives gaseous, volatile components of the heat transfer oil in the treatment stream and is connected via a connecting line (15) to a gas chamber (19) of the condensation device (16). A vacuum pump (9) can be connected to the gas chamber (19) of the condensation device (16) at a suction side (20). By means of the vacuum pump (9), a pump-generated reduced pressure can be created in the gas chamber (19) of the condensation device (16), which is lower than the pressure in the gas chamber (14) of the separation device (10). As a result, gaseous, volatile components of the heat transfer oil in the treatment stream can be conveyed from the gas chamber (14) of the separation device (10) to the condensation device (16) through the connecting line (15) between the gas chambers (14, 19) of the separation device (10) and the condensation device (16).