Molten salt heat storage and release integrated device

Abstract

The invention discloses a fused salt heat storage and release integrated device, which belongs to the field of fused salt energy storage, and comprises a container, which is divided into a pumping area, a heating area, a heat storage area and a heat release area which are communicated in sequence; the electric heater is at least partially positioned in the heating area; the heat exchanger is positioned in the heat release area; one end of the delivery pump is communicated with the pumping area, the other end of the delivery pump is communicated with the heat storage area and the heat release area through a switching valve in a pipeline mode, the pumping area, the delivery pump, the switching valve, the heat storage area and the heating area form a heat storage circulation loop, and the pumping area, the delivery pump, the switching valve, the heat release area, the heat storage area and the heating area form a heat release circulation loop. Therefore, the switching valve can independently control the operation of the heat storage circulation loop and the heat release circulation loop. The invention has the technical effects that the independent control performance of heat storage and heat release is good, and the integration is good.

Description

Technical Field

[0001] This invention relates to molten salt energy storage, and more particularly to an integrated device for molten salt heat storage and release. Background Technology

[0002] Molten salt thermal energy storage and release devices are thermal energy storage and release systems that utilize molten salt as a heat storage and transfer medium. They are widely used in solar thermal power generation, industrial waste heat recovery, power grid peak shaving, and clean heating. Their core principle is to use molten salt to absorb and store heat at high temperatures and release it when needed, achieving spatiotemporal energy transfer and stable supply.

[0003] The independent control performance of the heat storage and release of related molten salt heat storage and release devices is poor, making it difficult to operate them independently. At the same time, the related molten salt heat storage and release devices have many external pipelines and auxiliary facilities, which can easily lead to poor integration. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide an integrated molten salt heat storage and release device, which not only has good independent control performance for heat storage and release, but also good integration.

[0005] Technical solution: A molten salt heat storage and release integrated device, comprising: The container is divided into a pumping zone, a heating zone, a heat storage zone, and a heat release zone that are connected in sequence. An electric heater that is at least partially located within the heating zone; The heat exchanger is located within the heat dissipation zone; A delivery pump is provided, with one end connected to the pumping zone and the other end connected to the heat storage zone and the heat release zone via a switching valve. The pumping zone, the delivery pump, the switching valve, the heat storage zone, and the heating zone form a heat storage circulation loop, and the pumping zone, the delivery pump, the switching valve, the heat release zone, the heat storage zone, and the heating zone form a heat release circulation loop, so that the switching valve can independently control the operation of the heat storage circulation loop and the heat release circulation loop.

[0006] Optionally, it also includes a first partition plate disposed between the heat storage zone and the heat release zone. The lower side of the first partition plate is provided with a heat storage and heat release connection channel. The heat storage zone and the heat release zone are connected through the heat storage and heat release connection channel so that the molten salt of the heat exchanger falls from the heat release zone into the heat storage zone.

[0007] Optionally, a second partition is provided between the heat storage zone and the heating zone. The upper side of the second partition is provided with a heat storage connection channel. The heat storage zone and the heating zone are connected through the heat storage connection channel so that the heat storage zone can temporarily store molten salt.

[0008] Optionally, it also includes a lifting agitator located in the heat storage zone to drive the molten salt in the heat storage zone to flow upward.

[0009] Optionally, a third partition is provided between the heating zone and the pumping zone. The lower end of the third partition is spaced from the interior of the container. The electric heater extends into the heating zone from top to bottom, so that the molten salt in the heating zone flows from top to bottom through the electric heater and then enters the pumping zone.

[0010] Optionally, a flow equalization plate is provided between the lower end of the third partition and the second partition. The second partition, the third partition, and the flow equalization plate enclose the heating zone. The flow equalization plate is provided with a plurality of holes for molten salt to flow out of the heating zone and for some of the heat from the heating zone to radiate to the pumping zone.

[0011] Optionally, it may also include a number of baffles staggered on both sides of the heating zone to increase the flow path of molten salt in the heating zone.

[0012] Optionally, it also includes a first inlet, a first outlet, a second inlet, and a third inlet, all disposed in the container. The first inlet is connected to the first cold outlet of the heat exchanger, the first outlet is connected to the second cold outlet of the heat exchanger, the second inlet is connected between the switching valve and the first hot outlet of the heat exchanger, and the third inlet is connected between the switching valve and the heat storage zone. The first inlet and the second hot outlet of the heat exchanger are located on one side of the container, and the first outlet and the second inlet are located on the other side of the container.

[0013] Optionally, the container is tilted along the direction of gravity at the end near the pumping zone so that the height of the heat release zone, heat storage zone, heating zone, and pumping zone gradually decreases.

[0014] Optionally, the container is wrapped with an electric heat tracing component and an insulation layer in sequence.

[0015] Beneficial effects: (1) The molten salt heat storage and release integrated device of this embodiment makes it easy to achieve good independent control performance of heat storage and heat release, thus facilitating the independent operation of heat storage and heat release; and since a single delivery pump controls heat storage and heat release, heat storage and heat release do not operate at the same time, the molten salt circulation path is short, reducing the operating pressure of a single delivery pump, and improving the molten salt flow efficiency and the control accuracy of the delivery pump.

[0016] (2) In this embodiment of the molten salt heat storage and release integrated device, the pumping zone is the main area for storing molten salt in the container, and the molten salt for heat storage and heat release both start from the pumping zone. Therefore, a single delivery pump can maximize its transport capacity when set in the pumping zone. In addition, the two circulation routes share the same container, so there is no need to set up two, which is convenient to reduce auxiliary facilities and has good integration. When releasing heat, the low temperature molten salt that has passed through the heat exchanger does not pass through the external pipeline, but directly enters the heat storage zone and then enters the heating zone. On the one hand, it is convenient for the low temperature molten salt to always be in the container and the return path is short, which can effectively reduce the risk of low temperature molten salt solidification. On the other hand, there is no need to set up an external pipeline for transporting low temperature molten salt outside the container, which is convenient to improve integration and also eliminates the need to set up additional electric heat tracing facilities, which is convenient to reduce the size of the device. Attached Figure Description

[0017] Figure 1 This is one of the structural diagrams of an integrated molten salt heat storage and release device according to Embodiment 1 of the present invention; Figure 2 This is a second structural diagram of an integrated molten salt heat storage and release device according to Embodiment 1 of the present invention; Figure 3 This is the third structural diagram of an integrated molten salt heat storage and release device according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the heat storage of a molten salt heat storage and release integrated device according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the heat release of a molten salt storage and release integrated device according to Embodiment 1 of the present invention; In the diagram: 1. Container; 101. First inlet; 102. Second inlet; 103. Third inlet; 104. First outlet; 11. Pumping zone; 12. Heating zone; 13. Heat storage zone; 14. Heat release zone; 2. Electric heater; 3. Heat exchanger; 31. Tube bundle; 32. Shell; 331. First hot flow port; 332. Second hot flow port; 333. First cold flow port; 334. Second cold flow port; 4. Transfer pump; 5. Switching valve; 61. First baffle; 611. Heat storage / heat release connection channel; 62. Second baffle; 623. Heat storage / heat addition connection channel; 63. Third baffle; 64. Flow equalization plate; 65. Baffle plate; 7. Lifting agitator; 8. Electric heat tracing assembly; 9. Insulation layer. Detailed Implementation

[0018] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. The terms "first," "second," etc., used in this invention are for the convenience of describing the technical solutions of the invention and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solutions of the invention. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, not to 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 the invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this invention.

[0020] Example 1 like Figure 1 This embodiment provides an integrated molten salt heat storage and release device, including: a container 1, which is divided into a pumping zone 11, a heating zone 12, a heat storage zone 13, and a heat release zone 14 connected in sequence; an electric heater 2 located at least partially in the heating zone 12; a heat exchanger 3 located in the heat release zone 14; and a delivery pump 4, one end of which is connected to the pumping zone 11, and the other end of which is connected to the heat storage zone 13 and the heat release zone 14 respectively through a switching valve 5. The pumping zone 11, the delivery pump 4, the switching valve 5, the heat storage zone 13, and the heating zone 12 form a heat storage circulation loop, and the pumping zone 11, the delivery pump 4, the switching valve 5, the heat release zone 14, the heat storage zone 13, and the heating zone 12 form a heat release circulation loop, so that the switching valve 5 can control the operation of the heat storage circulation loop and the heat release circulation loop separately.

[0021] Specifically, such as Figure 4During heat storage, firstly, switching valve 5 is activated, connecting the other end of transfer pump 4 to heat storage zone 13. Next, transfer pump 4 is activated, sequentially transferring molten salt from pumping zone 11 through switching valve 5, heat storage zone 13, and heating zone 12, and circulating it back to pumping zone 11, thus forming a heat storage circulation loop. It should be noted that because non-flowing molten salt exists within heat exchanger 3, during heat storage, the molten salt in heat storage zone 13 mainly enters heating zone 12 and is less likely to enter heat exchanger 3 in heat release zone 14.

[0022] like Figure 5 During heat release, firstly, the switching valve 5 is activated, connecting the other end of the transfer pump 4 to the first heat flow port 331 of the heat exchanger 3 in the heat release zone 14; then, the transfer pump 4 is activated, which sequentially transfers the molten salt in the pumping zone 11 through the switching valve 5, the first heat flow port 331 of the heat exchanger 3, the second heat flow port 332 of the heat exchanger 3, the heat storage zone 13, and the heating zone 12, and circulates it back to the pumping zone 11, thereby forming a heat release circulation loop.

[0023] In summary, the molten salt heat storage and release integrated device of this embodiment facilitates good independent control performance of heat storage and release, thus enabling independent operation of heat storage and release. Furthermore, since a single delivery pump 4 controls heat storage and release, they do not operate simultaneously, resulting in a shorter molten salt circulation path, reducing the operating pressure on the single delivery pump 4, and improving the molten salt flow efficiency and control accuracy of the delivery pump 4. The pumping zone 11 is the main area for storing molten salt within the container 1, and both heat storage and release molten salt originate from the pumping zone 11. Therefore, placing the single delivery pump 4 in the pumping zone 11 maximizes its operational efficiency. It has the capacity to deliver heat, and the two circulation routes share the same container 1, eliminating the need for two separate containers, which reduces auxiliary facilities and improves integration. During heat release, the low-temperature molten salt passing through the heat exchanger 3 is not transported through external pipelines, but directly enters the heat storage zone 13 and then the heating zone 12. On the one hand, this ensures that the low-temperature molten salt is always located inside the container 1 and has a short return path, which can effectively reduce the risk of solidification of the low-temperature molten salt. On the other hand, there is no need to set up external pipelines outside the container 1 for transporting the low-temperature molten salt, which improves integration and eliminates the need for additional electric heat tracing facilities, thus reducing the size of the device.

[0024] The container 1 is preferably arranged horizontally, and the material of the container 1 is preferably austenitic stainless steel with a thickness of 10-20mm. The electric heater 2 is used to heat the molten salt in the heating zone 12. The electric energy required by the electric heater 2 can come from the conversion of waste electricity, off-peak electricity or solar thermal energy, which facilitates the heat storage of molten salt. The electric heater 2 can be of the form of resistance type, etc. The first hot flow port 331 and the second hot flow port 332 of the heat exchanger 3 are used to flow molten salt in sequence, and the first cold flow port 333 and the second cold flow port 334 of the heat exchanger 3 are used to flow water or other heat exchange media in sequence, which facilitates the transfer of heat from the molten salt to the heat exchange media and realizes the heat release of the molten salt. The heat exchanger 3 is preferably of the form of an evaporator. The transfer pump 4 is used to transfer molten salt. The transfer pump 4 is preferably of the form of a vertical submersible pump. The switching valve 5 is preferably a three-way ball valve or a three-way plug valve made of high temperature resistant alloy to ensure reliable switching with zero leakage in both directions under high temperature molten salt conditions.

[0025] Furthermore, such as Figure 1 It also includes a first partition 61 located between the heat storage zone 13 and the heat release zone 14. The lower side of the first partition 61 is provided with a heat storage and heat release connection channel 611. The heat storage zone 13 and the heat release zone 14 are connected through the heat storage and heat release connection channel 611 so that the molten salt of the heat exchanger 3 falls from the heat release zone 14 into the heat storage zone 13.

[0026] Specifically, since the heat storage zone 13 and the heat release zone 14 are connected by the heat storage and heat release connection channel 611, it is convenient to utilize the gravity of molten salt, reduce the burden on the transfer pump 4, and improve the flow rate of molten salt. During operation, the molten salt that has undergone heat exchange in the heat release zone 14 directly enters the heat storage zone 13 through the heat storage and heat release connection channel 611 inside the container 1. The flow path is short and the molten salt flow efficiency is high. Since there is no need to go through the pipeline outside the container 1, there is no need to install electric heat tracing facilities for the pipeline, which improves the degree of integration and reduces the size of the equipment.

[0027] Furthermore, such as Figure 1 It also includes a second partition 62 located between the heat storage zone 13 and the heating zone 12. The upper side of the second partition 62 is provided with a heat storage connection channel 623. The heat storage zone 13 and the heating zone 12 are connected through the heat storage connection channel 623 so that the heat storage zone 13 can temporarily store molten salt.

[0028] Specifically, the heat storage connection channel 623 is essentially the outlet of the heat storage zone 13, located on the upper side of the second partition 62. This allows the heat storage zone 13 to temporarily store molten salt. When heat storage in the heating zone 12 is not urgent, some molten salt can be temporarily stored in the heat storage zone 13. Furthermore, the molten salt in the heat storage zone 13 can naturally flow into the heating zone 12 through the heat storage connection channel 623 as its storage volume increases (with the continuous influx of molten salt), thus reducing the burden on the delivery pump 4. In some embodiments, a mechanical stirrer can be installed in the heat storage zone 13 to maintain the temperature uniformity of the molten salt within the heat storage zone 13.

[0029] Furthermore, such as Figure 1 It also includes a lifting agitator 7 located in the heat storage zone 13 to drive the molten salt in the heat storage zone 13 to flow upward.

[0030] Specifically, the lifting agitator 7 is used to operate throughout the heat storage and heat release stages to facilitate the maintenance of uniform molten salt temperature. The lifting agitator 7 can be in the form of a spiral belt or an inclined paddle, etc., to provide axial lifting force, assist molten salt flow, and share pump pressure.

[0031] Furthermore, such as Figure 1 It also includes a third partition 63 located between the heating zone 12 and the pumping zone 11. The lower end of the third partition 63 is separated from the interior of the container 1. The electric heater 2 extends into the heating zone 12 from top to bottom so that the molten salt in the heating zone 12 flows from top to bottom through the electric heater 2 and then enters the pumping zone 11.

[0032] Specifically, the material of the third partition 63 is preferably austenitic stainless steel, nickel-iron-chromium alloy or other metals with certain thermal conductivity, so that the radiant heat generated by the electric heater 2 can be used to keep the molten salt in the pumping zone 11 warm through the third partition 63.

[0033] Furthermore, such as Figure 1 A flow equalization plate 64 is provided between the lower end of the third partition 63 and the second partition 62. The second partition 62, the third partition 63 and the flow equalization plate 64 enclose a heating zone 12. The flow equalization plate 64 is provided with several holes for molten salt to flow out of the heating zone 12 and for some of the heat from the heating zone 12 to radiate to the pumping zone 11.

[0034] Specifically, the flow equalization plate 64 is preferably a porous steel plate, which facilitates the creation of a controllable flow field in conjunction with the heat storage connection channel 623, so that the molten salt flows into the pumping zone 11 evenly, and guides the molten salt to form a stable and controllable large circulation loop during the heat storage stage, avoiding dead zones and short circuits in the flow field inside the container 1, while blocking large particulate impurities present in the molten salt, preventing large particulate impurities from damaging the delivery pump 4.

[0035] Furthermore, such as Figure 1It also includes several baffles 65 that are staggered on both sides of the heating zone 12 to increase the flow path of molten salt in the heating zone 12.

[0036] Specifically, the baffle 65 facilitates the increase of the flow path of molten salt in the heating zone 12, thereby facilitating the increase of the heating effect of the electric heater 2 on the molten salt. The baffle 65 can be connected to the second partition 62 or the third partition 63.

[0037] Furthermore, such as Figure 1 It also includes a first inlet 101, a first outlet 104, a second inlet 102, and a third inlet 103, all located in container 1. The first inlet 101 is connected to the first cold flow port 333 of heat exchanger 3, the first outlet 104 is connected to the second cold flow port 334 of heat exchanger 3, the second inlet 102 is connected between the switching valve 5 and the first hot flow port 331 of heat exchanger 3, and the third inlet 103 is connected between the switching valve 5 and the heat storage zone 13. The first inlet 101 and the second hot flow port 332 of heat exchanger 3 are located on one side of container 1, and the first outlet 104 and the second inlet 102 are located on the other side of container 1.

[0038] Specifically, since the first inlet 101 and the second hot flow port 332 of the heat exchanger 3 are located on one side of the container 1, and the first outlet 104 and the second inlet 102 are located on the other side of the container 1, it is convenient for the molten salt to flow along the direction of the second inlet 102, the first hot flow port 331 of the heat exchanger 3 and the second hot flow port 332 of the heat exchanger 3, that is, to flow from top to bottom. At the same time, it is convenient for the heat exchange medium to flow along the direction of the first inlet 101, the first cold flow port 333 of the heat exchanger 3, the second cold flow port 334 of the heat exchanger 3 and the first outlet 104, that is, to flow from bottom to top. This facilitates the countercurrent flow of the molten salt and the heat exchange medium, thereby maximizing the heat transfer temperature difference throughout the process and improving the heat exchange efficiency.

[0039] It should be noted that heat exchanger 3 can take two specific forms, such as Figure 1 The first type is where the heat exchanger 3 itself includes a tube bundle 31 and a shell 32; for example... Figure 2 The second type is that the heat exchanger 3 itself includes a tube bundle 31, and the inner wall of the container 1 and the first partition 61 serve as the shell 32.

[0040] Furthermore, such as Figure 3 The end of container 1 closest to the pumping zone 11 is tilted along the direction of gravity so that the height of the heat release zone 14, the heat storage zone 13, the heating zone 12 and the pumping zone 11 gradually decreases.

[0041] Specifically, as the heights of the heat release zone 14, heat storage zone 13, heating zone 12, and pumping zone 11 gradually decrease, it is convenient to enhance the natural convection of molten salt, reduce the energy consumption of the delivery pump 4, and optimize the stirring effect. The preferred range of the tilt angle α is 5-10°.

[0042] Furthermore, such as Figure 1 The container 1 is wrapped with an electric heat tracing component 8 and an insulation layer 9 in sequence.

[0043] Specifically, the electric heat tracing component 8 is used for periodic heating to prevent the molten salt in the container 1 from solidifying; the insulation layer 9 is used for heat preservation, and the thickness of the insulation layer 9 is preferably 200-400mm. The material of the insulation layer 9 is one of aluminum silicate fiber blanket, rock wool, and high-temperature glass wool.

[0044] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A molten salt heat storage integration device, characterized by, The container (1) is divided into a pumping zone (11), a heating zone (12), a heat storage zone (13) and a heat release zone (14) in sequence; An electric heater (2) is located at least partially in the heating zone (12); A heat exchanger (3) is located in the heat release zone (14); A delivery pump (4) is connected to the pumping zone (11) at one end, and is connected to the heat storage zone (13) and the heat release zone (14) through a switching valve (5) at the other end, respectively, and the pumping zone (11), the delivery pump (4), the switching valve (5), the heat storage zone (13) and the heating zone (12) form a heat storage circulation loop, and the pumping zone (11), the delivery pump (4), the switching valve (5), the heat release zone (14), the heat storage zone (13) and the heating zone (12) form a heat release circulation loop, so that the switching valve (5) can control the operation of the heat storage circulation loop and the heat release circulation loop, respectively. A first partition (61) is arranged between the heat storage zone (13) and the heat release zone (14), and a heat storage and heat release connection channel (611) is arranged on the lower side of the first partition (61), so that the heat storage zone (13) and the heat release zone (14) are connected through the heat storage and heat release connection channel (611), and the molten salt in the heat exchanger (3) falls into the heat storage zone (13) from the heat release zone (14).

2. A molten salt heat storage integration device according to claim 1, characterized in that A second partition (62) is arranged between the heat storage zone (13) and the heating zone (12), and a heating and heat storage connection channel (623) is arranged on the upper side of the second partition (62), so that the heat storage zone (13) and the heating zone (12) are connected through the heating and heat storage connection channel (623), and the heat storage zone (13) can temporarily store molten salt.

3. The molten salt heat storage integration device according to claim 1, characterized in that, A lifting type agitator (7) is arranged in the heat storage zone (13) to drive the molten salt in the heat storage zone (13) to flow upward.

4. A molten salt heat storage integration device according to claim 3, wherein, A third partition (63) is arranged between the heating zone (12) and the pumping zone (11), and the lower end of the third partition (63) has a spacing with the inside of the container (1), and the electric heater (2) extends downward into the heating zone (12), so that the molten salt in the heating zone (12) flows downward through the electric heater (2) and then enters the pumping zone (11).

5. A molten salt heat storage integration device according to claim 3, wherein A flow distribution plate (64) is arranged between the lower end of the third partition (63) and the second partition (62), and the second partition (62), the third partition (63) and the flow distribution plate (64) form the heating zone (12), and a plurality of holes are arranged on the flow distribution plate (64) for the molten salt to flow out of the heating zone (12) and radiate part of the heat of the heating zone (12) to the pumping zone (11).

6. A molten salt heat storage integration device according to claim 5, wherein, A plurality of baffles (65) are arranged in the heating zone (12) in an interleaved and spaced manner to increase the flow path of the molten salt in the heating zone (12).

7. The molten salt heat storage integration device according to claim 1, characterized in that, ​ 8. The molten salt heat storage integration device of claim 1, wherein, The container (1) is provided with a first inlet (101), a first outlet (104), a second inlet (102) and a third inlet (103), the first inlet (101) is communicated with the first cold flow port (333) of the heat exchanger (3), the first outlet (104) is communicated with the second cold flow port (334) of the heat exchanger (3), the second inlet (102) is communicated between the switching valve (5) and the first hot flow port (331) of the heat exchanger (3), the third inlet (103) is communicated between the switching valve (5) and the heat storage area (13), the first inlet (101) and the second hot flow port (332) of the heat exchanger (3) are located on one side of the container (1), and the first outlet (104) and the second inlet (102) are located on the other side of the container (1).

9. The molten salt heat storage integration device of claim 1, wherein, The container (1) is inclined along the direction of gravity near one end of the pumping area (11), so that the heights of the heat release area (14), the heat storage area (13), the heating area (12) and the pumping area (11) gradually decrease.

10. The molten salt heat storage integration device of claim 1, wherein, The container (1) is wrapped with an electric heat tracing assembly (8) and a heat preservation layer (9) in sequence.

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