Jacketed heat exchange device and spheroidizing furnace for preparing silica powder

Abstract

This invention provides a jacketed heat exchange device and a spheroidizing furnace for preparing silica powder. The jacketed heat exchange device includes a jacket body with a heat exchange medium inlet and a heat exchange medium outlet. The heat exchange medium outlet is located at the upper part of the jacket body. An exhaust device is also provided at the upper part of the jacket body. The exhaust device includes an exhaust bend, one end of which is inserted into the jacket body and extends upward to the top surface of the internal cavity of the jacket body. The exhaust bend can fully exhaust the gas between the heat exchange medium outlet and the top surface of the jacket body, thereby improving the overall heat exchange effect of the jacketed heat exchange device and reducing safety hazards. The spheroidizing furnace equipped with this jacketed heat exchange device can precisely control the furnace temperature during silica powder preparation, reducing the problem of uneven silica particle formation caused by temperature fluctuations, significantly improving product quality consistency and production efficiency, reducing the defect rate, and increasing economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of silica powder preparation technology, and more specifically, to a jacketed heat exchange device and a spheroidizing furnace for preparing silica powder. Background Technology

[0002] With the continuous development of industrial technology, jackets, as a commonly used heat exchange device, are widely used in chemical, pharmaceutical and other fields. Jackets are typically used on the outside of containers, controlling the internal temperature by flowing a medium (such as water, steam or coolant) inside the jacket. This structural design effectively improves the heat exchange efficiency of the equipment and ensures that the equipment operates within a safe temperature range.

[0003] In existing technologies, to achieve good heat exchange performance or ensure equipment safety, the heat exchange medium outlet is typically located at the top of the jacket. Ideally, the heat exchange medium outlet should be as close as possible to the top of the jacket to ensure sufficient flow of the medium within the jacket and to remove heat. However, in practical applications, due to design or manufacturing limitations, the height between the heat exchange medium outlet and the top of the jacket may be significant. This can result in a space between the heat exchange medium outlet and the top of the jacket that is not filled with liquid but is instead occupied by gas. This situation can lead to poor heat exchange performance, failure to meet process requirements, and even safety hazards or accidents.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a jacketed heat exchange device and a spheroidizing furnace for preparing silica powder, so as to improve the above-mentioned technical problems.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, the present invention provides a jacketed heat exchange device, which includes a jacket body, wherein the jacket body is provided with a heat exchange medium inlet and a heat exchange medium outlet, the heat exchange medium outlet is provided at the upper part of the jacket body, and the upper part of the jacket body is also provided with an exhaust device, the exhaust device including an exhaust bend, one end of the exhaust bend being inserted into the jacket body and extending upward to the top surface of the internal cavity of the jacket body.

[0008] In an optional embodiment, the exhaust bend includes a vertical section and a horizontal section that are interconnected. The free end of the vertical section extends upward to the top surface of the jacket body, and the angle between the end face of the free end of the vertical section and the top surface of the jacket body is α, where α > 45°. The horizontal section extends out of the jacket body.

[0009] In an optional implementation, α = 60°.

[0010] In an optional embodiment, the exhaust bend is further provided with an exhaust valve.

[0011] In an optional embodiment, the exhaust valve is located at the end of the horizontal section that extends out of the jacket body.

[0012] In an optional embodiment, the exhaust bend is inserted into the jacket body at the same height as or below the heat exchange medium outlet.

[0013] In an optional embodiment, the exhaust bend is a rigid bend.

[0014] In an optional embodiment, the heat exchange medium outlet is provided with a medium outlet valve, and the heat exchange medium inlet is provided with a heat exchange medium inlet valve.

[0015] Secondly, this utility model also provides a spheroidizing furnace for preparing silica powder, wherein the outer wall of the spheroidizing furnace is provided with a jacketed heat exchange device as described in any of the preceding embodiments.

[0016] The beneficial effects of this invention include: An exhaust device is provided on the upper part of the jacket body, and the exhaust bend extending to the top surface of the internal cavity of the jacket body can fully exhaust the gas between the heat exchange medium outlet and the top surface of the jacket body, thereby improving the overall heat exchange effect of the jacket heat exchange device and reducing safety hazards. When preparing silica powder, the spheroidizing furnace equipped with this jacket heat exchange device can precisely control the furnace temperature, reducing the problem of uneven silica particle formation caused by temperature fluctuations, significantly improving product quality consistency and production efficiency, reducing the defect rate, and increasing economic benefits. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the jacketed heat exchanger provided in the embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure at point A of the jacketed heat exchange device provided in an embodiment of the present invention.

[0020] Icons: 10-Jacketed heat exchanger; 100-Jacket body; 101-Jacket outer wall; 102-Jacket inner wall; 110-Heat exchange medium inlet; 120-Heat exchange medium outlet; 130-Exhaust bend; 131-Vertical section; 132-Horizontal section; 133-Exhaust valve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model 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 utility model.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0027] The following describes in detail, through embodiments and in conjunction with the accompanying drawings, the overall structure, working principle, and technical effects of a jacketed heat exchange device and a spheroidizing furnace for preparing silica powder provided by this utility model.

[0028] Example

[0029] See Figure 1 This embodiment provides a jacketed heat exchange device, which includes a jacket body 100. The jacket body 100 constitutes the outer shell of the entire device and has a closed cavity space inside, which can provide a closed flow space for the heat exchange medium. Specifically, the internal cavity space of the jacket body 100 is surrounded by the outer wall 101 and the inner wall 102 of the jacket. It should be noted that, generally, the jacket body 100 is made of metal, such as stainless steel. The jacket body 100 can be used directly as a heat exchange container, or it can be fitted onto the surface of the container that needs heat exchange, that is, the shape and size of the inner wall 102 of the jacket body 100 matches the shape and size of the outer wall of the container that needs heat exchange. For example, if the container that needs heat exchange is a spheroidizing furnace, and the spheroidizing furnace is cylindrical, then the inner wall of the jacket body 100 is cylindrical, and the jacket body 100 is an annular sleeve with a certain thickness. Specifically, in this embodiment, the heat exchange medium is a cooling medium. Of course, depending on the actual application scenario, in other embodiments, the heat exchange medium can also be a heating medium.

[0030] The jacket body 100 is provided with a heat exchange medium inlet 110 and a heat exchange medium outlet 120, wherein the heat exchange medium outlet 120 is located at the upper part of the jacket body 100, and the heat exchange medium inlet 110 is located at the lower part of the jacket body 100. This positioning design overcomes the gravity of the cooling medium, allowing the jacket to be completely filled with cooling medium, facilitating the flow of the cooling medium under pressure after heat exchange is completed, and maintaining the directionality of the medium flow. In this embodiment, the heat exchange medium outlet 120 is provided with a heat exchange medium outlet valve (not shown in the figure), and the heat exchange medium inlet 110 is provided with a heat exchange medium inlet valve (not shown in the figure). These two valves work together. The heat exchange medium inlet valve precisely controls the injection speed and flow rate of the heat exchange medium, avoiding excessive injection that could cause a sudden increase in internal pressure of the jacket, or insufficient injection that could result in inadequate heat exchange. The heat exchange outlet valve is adjusted accordingly to control the timely discharge of the medium, achieving refined management of the heat exchange medium circulation.

[0031] The jacket body 100 is also equipped with an exhaust device, which includes an exhaust bend 130. One end of the exhaust bend 130 is inserted into the jacket body 100 and extends upward to the top surface of the internal cavity of the jacket body 100. This design ensures that the gas inside the jacket can be discharged along the exhaust bend 130, preventing gas from accumulating inside the jacket, interfering with the heat transfer process between the heat exchange medium and the object being heat exchanged, or even causing a safety accident.

[0032] Specifically, see Figure 2In this embodiment, the exhaust bend 130 is composed of a vertical section 131 and a horizontal section 132 connected together. The free end of the vertical section 131 extends upward to the top surface of the jacket body 100, and the angle α between the end face of the free end of the vertical section 131 and the top surface of the jacket body 100 is greater than 45°, for example, α = 60°. The larger angle setting allows the gas to change its flow direction more smoothly when passing through the bend, reducing the resistance at the corner. When the gas transitions from the vertical section 131 to the horizontal section 132, the larger angle α allows the gas force to be more effectively converted into the power for horizontal discharge, accelerating the exhaust process.

[0033] Furthermore, an exhaust valve 133 is also provided on the exhaust bend 130. The exhaust valve 133 is located at the end of the horizontal section 132 that extends out of the jacket body 100. The exhaust valve 133 gives the system the ability to regulate exhaust. At the initial stage of device startup, closing the exhaust valve 133 allows the cooling medium to quickly fill the jacket, preventing premature loss of the medium. After filling, opening the exhaust valve 133 allows the gas to be discharged. During operation, the valve is opened according to the actual working conditions to precisely control the exhaust, maintain the fullness of the cooling medium in the jacket, and ensure stable and continuous heat exchange and safety.

[0034] Furthermore, the height at which the exhaust pipe is inserted into the jacket body 100 is below the heat exchange medium outlet 120, meaning that the height at which the exhaust pipe is inserted into the jacket body 100 is the same as or lower than the height of the heat exchange medium outlet 120. This arrangement ensures that when the heat exchange medium flows out, the gas can also be discharged through the exhaust bend 130, preventing gas residue or accumulation in the jacket and maintaining a stable heat exchange environment.

[0035] It should be noted that in this embodiment, the exhaust bend 130 is a rigid bend, meaning it is made of a rigid material, such as stainless steel. During long-term operation, even under equipment vibration or minor external impacts, the rigid bend maintains its shape and structural stability, without bending or deforming, thus ensuring a smooth and unobstructed exhaust passage. This eliminates the need for frequent maintenance and replacement of the bend, reducing operating costs. The location where the exhaust bend 130 intersects the jacket body 100 is sealed by welding.

[0036] The assembly and operation of the jacketed heat exchanger 10 in this embodiment are as follows:

[0037] The jacket body 100 is welded or integrally formed using existing processes, ensuring accurate pre-reserved positions for the heat exchange medium inlet 110 and outlet 120. The exhaust bend 130 is inserted into the jacket body 100 according to design requirements and fixed, ensuring it extends to the top surface of the internal cavity. If an angled exhaust bend 130 is used, precisely control the angle between the cut at the end of the vertical section 131 and the top surface of the jacket. An exhaust valve 133 is installed at the end of the horizontal section 132, and media valves are also installed at the heat exchange medium inlet 110 and outlet 120.

[0038] When the equipment is initially filled with heat exchange medium, first close the exhaust valve 133, and open the heat exchange medium inlet valve and the heat exchange medium outlet valve. When medium overflows from the heat exchange medium outlet 120, open the exhaust valve 133 of the exhaust device and close the heat exchange medium outlet valve. When all the medium discharged from the exhaust valve 133 is medium, it means that the gas in the jacket has been completely removed. Then, close the exhaust valve 133 and open the heat exchange medium outlet valve.

[0039] During equipment operation, when the heat exchange medium is the cooling medium, as the temperature of the medium inside the jacket rises, the gas originally dissolved in the medium will be released and accumulate in the upper space of the heat exchange medium outlet 120 inside the jacket. At this time, the gas can still be discharged by opening the exhaust valve 133 of the exhaust device.

[0040] Furthermore, this embodiment also provides a spheroidizing furnace for preparing silica powder. The outer wall of the spheroidizing furnace is equipped with the aforementioned jacketed heat exchange device, wherein the heat exchange medium is a cooling medium. The assembled jacketed heat exchange device is installed around the outer wall of the spheroidizing furnace, and the sealed connection ensures efficient heat transfer. During the silica powder preparation process, as the spheroidizing furnace heats up, the jacketed heat exchange device starts simultaneously, precisely controlling the furnace temperature and maintaining a stable reaction environment.

[0041] In summary, the exhaust bend 130 promptly discharges gas from the jacket, preventing gas blockage, maintaining uniform flow of the heat exchange medium (e.g., cooling medium), and improving heat exchange efficiency. The bend at a specific angle accelerates exhaust and reduces energy loss; the exhaust valve 133 enhances system controllability and adapts to different operating conditions; the appropriate insertion position ensures stable flow of the cooling medium; the rigid bend provides long-term stable exhaust; and the inlet and outlet valves precisely regulate medium circulation. When preparing silica powder, the spheroidizing furnace equipped with this jacket heat exchange device can precisely control the furnace temperature, reducing uneven silica particle formation caused by temperature fluctuations, significantly improving product quality consistency and production efficiency, reducing defect rates, and increasing economic benefits. Simultaneously, it can effectively prevent safety accidents caused by gas accumulation within the jacket.

[0042] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A jacketed heat exchange device, characterized in that, The device includes a jacket body, which has a heat exchange medium inlet and a heat exchange medium outlet. The heat exchange medium outlet is located on the upper part of the jacket body. The upper part of the jacket body is also provided with an exhaust device, which includes an exhaust bend. One end of the exhaust bend is inserted into the jacket body and extends upward to the top surface of the internal cavity of the jacket body.

2. The jacketed heat exchange device according to claim 1, characterized in that, The exhaust bend includes a vertical section and a horizontal section that are interconnected. The free end of the vertical section extends upward to the top surface of the jacket body, and the angle between the end face of the free end of the vertical section and the top surface of the jacket body is α, where α > 45°. The horizontal section extends out of the jacket body.

3. The jacketed heat exchange device according to claim 2, characterized in that, α=60°。 4. The jacketed heat exchange device according to claim 2, characterized in that, An exhaust valve is also installed on the exhaust bend.

5. The jacketed heat exchange device according to claim 4, characterized in that, The exhaust valve is located at the end of the horizontal section that extends out of the jacket body.

6. The jacketed heat exchange device according to claim 2, characterized in that, The position at which the exhaust bend is inserted into the jacket body can be below the outlet of the heat exchange medium.

7. The jacketed heat exchange device according to claim 1, characterized in that, The exhaust bend is a rigid bend.

8. The jacketed heat exchange device according to claim 1, characterized in that, The heat exchange medium outlet is equipped with a medium outlet valve, and the heat exchange medium inlet is equipped with a heat exchange medium inlet valve.

9. A spheroidizing furnace for preparing silica powder, characterized in that, The outer wall of the spheroidizing furnace is provided with a jacketed heat exchange device as described in any one of claims 1 to 8.

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