Gas phase heat conducting oil on-line regeneration device
By designing an online regeneration device for vapor-phase heat transfer oil, and utilizing high-pressure steam heating and component separation technology, the problems of high energy consumption and downtime during heat transfer oil regeneration have been solved, achieving low-energy online regeneration and continuous production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINFENGMING GRP CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-16
Smart Images
Figure CN224358416U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat transfer oil regeneration technology, and in particular to an online regeneration device for vapor-phase heat transfer oil. Background Technology
[0002] Thermal transfer oil is a type of specialized oil with good thermal stability widely used in industrial fields for indirect heat transfer. Vapor phase thermal transfer oil refers to thermal transfer oil that is in a gaseous state when releasing heat, and during use, the thermal transfer oil undergoes a phase cycle of heating and vaporization followed by releasing heat and liquefaction.
[0003] During heating and use, heat transfer oil undergoes oxidation, cracking, and polymerization reactions, significantly increasing its light component and residual carbon content. If material leaks into the heat transfer oil, prolonged heating will cause a substantial increase in its acid value, easily corroding pipelines and equipment. Because heat transfer oil is expensive, replacing it entirely is costly, especially for large integrated plants. Regenerating the original heat transfer oil for reuse using regeneration technology is a reasonable and economical method.
[0004] Currently, there are two methods for heat transfer oil regeneration: online and offline. Offline regeneration requires shutdown or slow replacement, resulting in low efficiency and poor economic performance. Online regeneration can ensure continuous production of the unit and is more reasonable. However, while vacuum distillation can achieve online regeneration, this method requires heating and cooling the heat transfer oil, consuming a large amount of energy, resulting in high overall energy consumption. Utility Model Content
[0005] To address the aforementioned technical shortcomings, this invention provides an online regeneration device for vapor-phase heat transfer oil, which enables online regeneration of heat transfer oil without shutting down the system, and features low energy consumption and good continuity.
[0006] This utility model discloses an online regeneration device for vapor-phase heat transfer oil, including a production unit, a heat transfer oil steam main, a heat transfer oil intermediate tank, and a heat exchange island. The production unit is connected to the heat transfer oil intermediate tank via a pipeline. A heat transfer oil transfer pump is installed on the pipeline between the production unit and the heat transfer oil intermediate tank. The heat transfer oil intermediate tank is connected to the heat exchange island via a pipeline, and the heat exchange island is connected to the heat transfer oil steam main via a pipeline. A heat transfer oil intermediate pump is installed on the pipeline between the heat transfer oil intermediate tank and the heat exchange island. A vacuum pump is connected to the top of the heat transfer oil intermediate tank via a pipeline. The vacuum pump is connected to the heat transfer... A light component removal valve is installed on the pipeline between the intermediate oil tanks; a heat transfer oil bypass pipe is installed on the pipeline between the intermediate heat transfer oil pump and the heat exchange island, the heat transfer oil bypass pipe is connected to the heat transfer oil evaporator, the top of the heat transfer oil evaporator is connected to the heat transfer oil steam main pipe through a pipeline, a high-pressure steam inlet pipe and a high-pressure steam outlet pipe are installed on the heat transfer oil evaporator, a first thermometer and a steam regulating valve are installed on the high-pressure steam inlet pipe, a second thermometer is installed on the heat transfer oil evaporator, a heavy component discharge pipe is installed at the bottom of the heat transfer oil evaporator, and a heavy component discharge valve is installed on the heavy component discharge pipe.
[0007] A level gauge is installed inside the heat transfer oil evaporator, and a heat transfer oil regulating valve is installed on the heat transfer oil bypass pipe.
[0008] The present invention provides an online regeneration device for vapor-phase heat transfer oil. While heating and vaporizing the heat transfer oil in the heat exchange island to ensure a sufficient supply of heat transfer oil vapor to the production unit, a portion of the heat transfer oil is diverted to the heat transfer oil evaporator. The temperature of the heat transfer oil in the evaporator can be controlled according to actual needs, allowing the heat transfer oil to evaporate while allowing heavy components to remain in the evaporator and eventually be discharged. This achieves online regeneration of the heat transfer oil without affecting the normal operation of the production unit, and the overall energy consumption is low. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0010] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0011] Example 1:
[0012] like Figure 1As shown, this utility model discloses an online regeneration device for vapor-phase heat transfer oil, including a production device 16 and a heat transfer oil steam main 19. Its features include: an intermediate heat transfer oil tank 1 and a heat exchange island 18. The production device 16 is connected to the intermediate heat transfer oil tank 1 via a pipeline. A heat transfer oil transfer pump 17 is installed on the pipeline between the production device 16 and the intermediate heat transfer oil tank 1. The intermediate heat transfer oil tank 1 is connected to the heat exchange island 18 via a pipeline. The heat exchange island 18 is connected to the heat transfer oil steam main 19 via a pipeline. An intermediate heat transfer oil pump 2 is installed on the pipeline between the intermediate heat transfer oil tank 1 and the heat exchange island 18. A vacuum pump 4 is connected to the top of the intermediate heat transfer oil tank 1 via a pipeline. A light component removal valve 3 is installed on the pipeline between the intermediate heat transfer oil tank 1 and the intermediate heat transfer oil pump 2; a heat transfer oil bypass pipe 6 is installed on the pipeline between the intermediate heat transfer oil pump 2 and the heat exchange island 18, the heat transfer oil bypass pipe 6 is connected to the heat transfer oil evaporator 5, the top of the heat transfer oil evaporator 5 is connected to the heat transfer oil steam main pipe 19 through a pipeline, a high-pressure steam inlet pipe 9 and a high-pressure steam outlet pipe 10 are installed on the heat transfer oil evaporator 5, a first thermometer 12 and a steam regulating valve 11 are installed on the high-pressure steam inlet pipe 9, a second thermometer 13 is installed on the heat transfer oil evaporator 5, a heavy component discharge pipe 14 is installed at the bottom of the heat transfer oil evaporator 5, and a heavy component discharge valve 15 is installed on the heavy component discharge pipe 14.
[0013] A level gauge 8 is installed inside the heat transfer oil evaporator 5, and a heat transfer oil regulating valve 7 is installed on the heat transfer oil bypass pipe 6.
[0014] Among them, production device 16 refers to an industrial device that requires heating with vapor-phase heat transfer oil during the enterprise's production process, and does not specifically refer to any particular device. Heat exchange island 18 is a commercially available product; its specific structure will not be described in detail. Heat exchange island 18 uses boiler steam to heat and vaporize the heat transfer oil entering it, with a heating temperature between 320-330℃. Heat transfer oil evaporator 5 is also a commercially available product; its specific structure will not be described in detail. It uses high-pressure steam to heat the heat transfer oil entering the evaporator 5.
[0015] The specific operation process of the regeneration device in this embodiment is as follows:
[0016] The heat transfer oil vapor in the heat transfer oil vapor main pipe 19 enters the production unit 16. After heat exchange, the temperature decreases, and the heat transfer oil vapor liquefies to form liquid heat transfer oil. The liquid heat transfer oil is then transported to the heat transfer oil intermediate tank 1 by the heat transfer oil transfer pump 17. The heat transfer oil in the heat transfer oil intermediate tank 1 is then transported to the heat exchange island 18 by the heat transfer oil intermediate pump 2. The heat exchange island 18 heats the heat transfer oil, generally to 320-330℃, allowing the heat transfer oil in the heat exchange island 18 to rapidly heat up and vaporize, forming heat transfer oil vapor. This vapor is then transported through a pipeline to the heat transfer oil vapor main pipe 19, realizing the circulation of heat transfer oil between the production unit 16, the heat transfer oil intermediate tank 1, the heat exchange island 18, and the heat transfer oil vapor main pipe 19.
[0017] The pipe between the intermediate heat transfer oil tank 1 and the heat exchange island 18 can be connected to the bottom of the intermediate heat transfer oil tank 1. Since the liquid phase heat transfer oil liquefied by the production unit 16 enters the intermediate heat transfer oil tank 1, its temperature is about 260-270℃, which is lower than the boiling point of the heat transfer oil, but higher than the boiling point of the low components in the heat transfer oil. Therefore, the low components in the heat transfer oil are in a vaporized state in the intermediate heat transfer oil tank 1 and are located in the upper part of the intermediate heat transfer oil tank 1. So, according to actual needs, the light component removal valve 3 can be opened and the vacuum pump 4 can be started to extract the low components in the intermediate heat transfer oil tank 1 to achieve the removal of low components.
[0018] Part of the heat transfer oil in the intermediate tank 1 is transported to the heat transfer oil regenerator through the heat transfer oil bypass pipe 6. High-temperature steam is used to heat the heat transfer oil in the heat transfer oil regenerator through the high-pressure steam inlet pipe 9 and the high-pressure steam outlet pipe 10, and the heating temperature is controlled at 280-290℃ to achieve vaporization and evaporation of the heat transfer oil. The heavy components, due to their high boiling point, cannot vaporize and remain in the heat transfer oil evaporator 5. They can be discharged to the outside through the heavy component discharge pipe 14 to achieve the regeneration of the heat transfer oil.
[0019] A first thermometer 12 is installed on the high-pressure steam inlet pipe 9 to detect the temperature of the high-pressure steam. At the same time, a second thermometer 13 is installed inside the heat transfer oil evaporator 5. Based on the high-pressure steam temperature and the temperature inside the heat transfer oil evaporator 5, the opening of the steam regulating valve 11 can be controlled to achieve stable heating of the heat transfer oil inside the heat transfer oil evaporator 5. The heating temperature can be precisely controlled to ensure that the heat transfer oil evaporates. The heavy components that have not reached the vaporization temperature gradually sink to the bottom of the heat transfer oil evaporator 5 and can be discharged separately to achieve separation of heavy components and regeneration of heat transfer oil.
[0020] A level gauge 8 is installed inside the heat transfer oil evaporator 5. The level inside the heat transfer oil evaporator 5 can be controlled by adjusting the opening of the heat transfer oil regulating valve 7, thereby ensuring the stability of heat transfer oil evaporation.
[0021] If the production device 16 involves a vacuum pump, a cooling system, and an exhaust gas treatment system, the vacuum pump 4 in this embodiment can be replaced by the vacuum pump of the production device 16. After the light components are extracted, they are processed through the cooling system and the exhaust gas treatment system, which can reduce the equipment cost and operating cost of the online regeneration device for gas phase heat transfer oil in this embodiment.
[0022] The beneficial effects of this invention are as follows: During normal production, heat transfer oil undergoes oxidation, cracking, and polymerization reactions after repeated heating, resulting in a significant increase in its light component and residual carbon content, thus producing light and heavy components. This device can remove these light and heavy components without affecting the normal production of the production unit 16, thereby improving thermal efficiency. Furthermore, the heat generated during the heat transfer oil regeneration process can be used by the production unit 16, eliminating energy waste.
[0023] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simplification, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An online regeneration device for vapor-phase heat transfer oil, comprising a production unit and a heat transfer oil steam main, characterized in that: It also includes a thermal oil intermediate tank and a heat exchange island. The production unit is connected to the thermal oil intermediate tank via a pipeline. A thermal oil transfer pump is installed on the pipeline between the production unit and the thermal oil intermediate tank. The thermal oil intermediate tank is connected to the heat exchange island via a pipeline. The heat exchange island is connected to the thermal oil steam main via a pipeline. A thermal oil intermediate pump is installed on the pipeline between the thermal oil intermediate tank and the heat exchange island. A vacuum pump is connected to the top of the thermal oil intermediate tank via a pipeline. A light component removal device is installed on the pipeline between the vacuum pump and the thermal oil intermediate tank. A bypass pipe for thermal oil is installed on the pipeline between the intermediate pump and the heat exchange island. The bypass pipe is connected to the thermal oil evaporator. The top of the thermal oil evaporator is connected to the thermal oil steam main pipe through a pipeline. A high-pressure steam inlet pipe and a high-pressure steam outlet pipe are installed on the thermal oil evaporator. A first thermometer and a steam regulating valve are installed on the high-pressure steam inlet pipe. A second thermometer is installed on the thermal oil evaporator. A heavy component discharge pipe is installed at the bottom of the thermal oil evaporator. A heavy component discharge valve is installed on the heavy component discharge pipe.
2. The online regeneration device for vapor-phase heat transfer oil according to claim 1, characterized in that: A level gauge is installed inside the heat transfer oil evaporator, and a heat transfer oil regulating valve is installed on the heat transfer oil bypass pipe.