A heat exchange device for reducing the temperature of hydrochloric acid in a silica ash leaching circulation

Abstract

The utility model provides a kind of heat exchange device for silica ash shower washes circulating hydrochloric acid cooling, comprising: fixed plate, four flow channel through pipes being equipped on fixed plate, adjusting plate being equipped in one end of fixed plate, heat exchange sheet being equipped between fixed plate and adjusting plate and being fixed with clamping screw;Clamping groove is clamped into by clamping screw and is equipped on the upper and lower ends of heat exchange sheet laminated group, arc fluid protrusion is equipped on the surface of heat exchange sheet, sealing gasket is equipped on the surface of heat exchange sheet, by above-mentioned scheme, the design of arc fluid protrusion increases the contact area of fluid and heat exchange sheet, further enhances heat exchange effect, avoids the problem that heat exchange effect is unstable due to fluid distribution is uneven in traditional heat exchange device.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing. Background Technology

[0002] Cooling the circulating hydrochloric acid is a crucial step in the silica fume rinsing process. Traditional cooling methods typically employ cooling towers or plate heat exchangers, but these methods have several significant drawbacks. While cooling towers are effective, they require a large footprint, consume high energy, and are susceptible to environmental influences, leading to unstable cooling performance. Secondly, although plate heat exchangers have a smaller footprint, their complex structure results in high maintenance costs, and their heat exchange efficiency is prone to decline due to corrosion and scaling over long-term use. Furthermore, during silica fume rinsing, the circulating hydrochloric acid often contains impurities such as silica fume particles and metal ions. These impurities not only affect the recycling efficiency of the hydrochloric acid but also damage the heat exchange equipment, shortening its lifespan. Utility Model Content

[0003] This utility model provides a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, in order to solve the problem of unstable heat exchange effect in heat exchange devices for cooling circulating hydrochloric acid during silica fume rinsing.

[0004] To address the aforementioned problems, this utility model provides a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, comprising: a fixed plate; four flow channel pipes disposed on the fixed plate; an adjusting plate disposed at one end of the fixed plate; heat exchange plates disposed between the fixed plate and the adjusting plate and fixed by clamping screws; clamping grooves disposed at the upper and lower ends of the heat exchange plate stack for engaging the clamping screws; arc-shaped fluid protrusions disposed on the surface of the heat exchange plates; and sealing gaskets disposed on the surface of the heat exchange plates. Through the above scheme, the design of the arc-shaped fluid protrusions increases the contact area between the fluid and the heat exchange plates, further enhancing the heat exchange effect and avoiding the problem of unstable heat exchange effect caused by uneven fluid distribution in traditional heat exchange devices.

[0005] According to one embodiment of this utility model, the heat exchange device further includes: a purified liquid channel connected to a flow channel pipe via a flange interface; a vertical plate disposed within the purified liquid channel; a filter belt disposed between two vertical plates and rotated in cooperation with a sprocket and chain mechanism; a motor cooperating with the sprocket and chain mechanism; and a liquid inlet disposed on the front side of the vertical plate. By adding structures such as the purified liquid channel, filter belt, and motor, the liquid purification function is enhanced, automated filtration is achieved, the equipment life is extended, and the overall performance and operating efficiency of the heat exchange device are improved. It is particularly suitable for application scenarios with high requirements for liquid purity, such as silica fume rinsing and circulating hydrochloric acid cooling.

[0006] According to one embodiment of the present invention, a slidable high-pressure water sprayer is provided on the outer side of the filter belt, and an impurity collection channel is provided in the upper middle part of the filter belt and fixed to the inner side of the upright plate. With the above solution, the slidable high-pressure water sprayer can slide along the outer side of the filter belt and use high-pressure water flow to clean the filter belt, effectively removing impurities and particles attached to the filter belt, avoiding filter clogging, and ensuring the filtration efficiency and service life of the filter belt.

[0007] According to one embodiment of the present invention, the aforementioned slidable high-pressure water sprayer is connected to the vertical plate via a slide rail. An adjusting bolt is provided on the slide rail. By adjusting the bolt on the slide rail, the position of the slidable high-pressure water sprayer can be precisely controlled so that it can be aimed at the key areas of the filter belt for cleaning, ensuring a more comprehensive and thorough cleaning effect.

[0008] According to one embodiment of the present invention, the mesh diameter of the filter belt is in the range of 0.1mm to 0.5mm. Through the above solution, fine particles and impurities in the liquid can be effectively intercepted, ensuring the cleanliness of the filtered liquid and meeting the needs of high-purity liquid treatment such as silica fume rinsing, circulating hydrochloric acid cooling, etc.

[0009] According to one embodiment of the present invention, the filter belt is made of polytetrafluoroethylene (PTFE). PTFE has extremely strong corrosion resistance and can resist the erosion of strong corrosive media such as hydrochloric acid, ensuring long-term stable operation of the filter belt in harsh environments such as silica fume rinsing, circulating hydrochloric acid cooling, etc., thus extending the service life of the filter belt.

[0010] According to one embodiment of the present invention, the sealing gasket is made of corrosion-resistant rubber. Corrosion-resistant rubber can resist the erosion of strong corrosive media such as hydrochloric acid, ensuring that the sealing gasket operates stably for a long time in the harsh environment of silica fume rinsing and hydrochloric acid cooling, and avoiding sealing failure due to corrosion.

[0011] According to one embodiment of the present invention, the bottom of the fixing plate is provided with a support foot. Through the above solution, a stable support is provided for the heat exchange device, preventing the equipment from shifting or tipping over due to vibration or external force during operation, thus ensuring the stable operation of the equipment.

[0012] The technical advantages of this application are as follows:

[0013] This application provides a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing. The arc-shaped fluid protrusion design increases the contact area between the fluid and the heat exchange plates, further enhancing the heat exchange effect and avoiding the unstable heat exchange caused by uneven fluid distribution in traditional heat exchange devices. By adding purification liquid channels, filter belts, and motors, the liquid purification function is enhanced, achieving automated filtration, extending equipment life, and improving the overall performance and operating efficiency of the heat exchange device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, provided by this utility model.

[0015] Figure 2 This is a top view structural diagram of a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, provided by this utility model.

[0016] Figure 3 This utility model provides Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0017] Figure 4 This is a front view schematic diagram of the heat exchanger plate in a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, provided by the utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Heat exchange fins; 2. Adjusting plate; 3. Clamping screw; 4. Fixing plate; 5. Flow channel pipe; 501. Cooling medium outlet; 502. Hydrochloric acid inlet; 503. Hydrochloric acid outlet; 504. Cooling medium inlet; 6. Vertical plate; 7. Motor; 8. Filter belt; 9. Sliding high-pressure water sprayer; 10. Liquid inlet; 11. Purified liquid channel; 12. Sealing gasket; 13. Arc-shaped fluid protrusion; 14. Clamping groove; 15. Sprocket and chain mechanism; 16. Impurity collection channel; 17. Support foot; 18. Slide rail. Detailed Implementation

[0020] The following will be combined with the appendix Figures 1-4 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples and should not be used to limit the scope of protection of this application.

[0021] Reference Figures 1-4 This utility model provides a heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, comprising: a fixed plate 4, four flow channel pipes 5 disposed on the fixed plate 4, an adjusting plate 2 disposed at one end of the fixed plate 4, heat exchange plates 1 disposed between the fixed plate 4 and the adjusting plate 2 and fixed by clamping screws 3; clamping grooves 14 disposed at the upper and lower ends of the stacked heat exchange plates 1 for engaging the clamping screws 3, arc-shaped fluid protrusions 13 disposed on the surface of the heat exchange plates 1, and sealing gaskets 12 disposed on the surface of the heat exchange plates 1. Through the above scheme, the design of the arc-shaped fluid protrusions 13 increases the contact area between the fluid and the heat exchange plates 1, further enhancing the heat exchange effect and avoiding the problem of unstable heat exchange effect caused by uneven fluid distribution in traditional heat exchange devices.

[0022] The aforementioned flow channel pipe 5 includes a hydrochloric acid inlet 501, a hydrochloric acid outlet 504, a cooling medium inlet 502, and a cooling medium outlet 503. The arc-shaped fluid protrusion 13 connects the hydrochloric acid inlet 501 and the hydrochloric acid outlet 504, making them diagonally arranged. Consequently, the cooling medium inlet 502 and the cooling medium outlet 503 are also diagonally arranged. The presence of the sealing gasket 12 ensures that only one type of fluid exists within a single heat exchange plate 1.

[0023] The heat exchange device also includes: a purified liquid channel 11 connected to the flow channel pipe 5 via a flange interface; a vertical plate 6 located within the purified liquid channel 11; a filter belt 8 located between two vertical plates 6 and rotated in cooperation with a sprocket and chain mechanism 15; a motor 7 cooperating with the sprocket and chain mechanism 15; and a liquid inlet 10 located on the front side of the vertical plate 6. By adding the purified liquid channel 11, the filter belt 8, and the motor 7, the liquid purification function is enhanced, automated filtration is achieved, the equipment life is extended, and the overall performance and operating efficiency of the heat exchange device are improved. It is particularly suitable for applications requiring high liquid purity, such as silica fume rinsing and circulating hydrochloric acid cooling.

[0024] The filter belt 8 is equipped with a sliding high-pressure water sprayer 9 on its outer side, and an impurity collection channel 16 is provided in the upper middle part of the filter belt 8 and fixed to the inner side of the upright plate 6. Through the above scheme, the sliding high-pressure water sprayer 9 can slide along the outer side of the filter belt 8 and use high-pressure water flow to clean the filter belt 8, effectively removing impurities and particles attached to the filter belt 8, avoiding filter clogging, and ensuring the filtration efficiency and service life of the filter belt 8.

[0025] The aforementioned slidable high-pressure water sprayer 9 is connected to the vertical plate 6 via a slide rail 18. The slide rail 18 is equipped with an adjusting bolt. By adjusting the bolt on the slide rail 18, the position of the slidable high-pressure water sprayer 9 can be precisely controlled so that it can be aimed at the key areas of the filter belt 8 for cleaning, ensuring a more comprehensive and thorough cleaning effect.

[0026] The mesh diameter of the filter belt 8 is between 0.1mm and 0.5mm. Through the above scheme, fine particles and impurities in the liquid can be effectively intercepted, ensuring the cleanliness of the filtered liquid and meeting the needs of high-purity liquid treatment such as silica fume rinsing, circulating hydrochloric acid cooling, etc.

[0027] The filter belt 8 is made of polytetrafluoroethylene (PTFE). PTFE has extremely strong corrosion resistance and can resist the erosion of strong corrosive media such as hydrochloric acid, ensuring that the filter belt 8 can operate stably for a long time in harsh environments such as silica fume rinsing, circulating hydrochloric acid cooling, etc., thus extending the service life of the filter belt 8.

[0028] The sealing gasket 12 is made of corrosion-resistant rubber. Corrosion-resistant rubber can resist the erosion of strong corrosive media such as hydrochloric acid, ensuring that the sealing gasket 12 can operate stably for a long time in the harsh environment of silica fume rinsing and hydrochloric acid cooling, and avoiding sealing failure caused by corrosion.

[0029] The bottom of the aforementioned fixed plate 4 is provided with support feet 17. Through the above scheme, a stable support is provided for the heat exchange device, preventing the equipment from shifting or tipping over due to vibration or external force during operation, thus ensuring the stable operation of the equipment.

[0030] Working principle:

[0031] The turbid hydrochloric acid solution flows into the filter belt area 8 from the liquid inlet 10. The motor 7 drives the sprocket and chain mechanism 15, which in turn drives the PTFE filter belt 8 to rotate continuously. The mesh diameter (0.1–0.5 mm) can intercept tiny particles such as silicon powder and metal oxides in the silica fume leaching solution.

[0032] The filtered clean hydrochloric acid enters the heat exchange area through the purification liquid channel 11, while impurities adhere to the surface of the filter belt. Motor 7 drives the filter belt 8 at 5 r / min, and the high-pressure water sprayer 9 is activated every hour to clean it. The sliding high-pressure water sprayer 9 moves along the slide rail 18, spraying high-pressure water onto the outside of the filter belt to remove the attached impurities. The washed impurities fall with the water flow into the impurity collection channel 16 inside the filter belt and are periodically discharged from the system to prevent clogging.

[0033] The number of heat exchange fins 1 is selected according to the required heat exchange capacity and water flow rate. After the heat exchange section is assembled, clean hydrochloric acid flows in from the hydrochloric acid inlet 502 and enters the channel on one side of the heat exchange fin 1. The arc-shaped fluid protrusion 13 causes the hydrochloric acid to flow in a serpentine manner, increasing the contact area with the heat exchange fin 1 and improving the heat exchange efficiency. Due to gravity, the hydrochloric acid flows out from the diagonally arranged hydrochloric acid outlet 503, completing the cooling process. Cooling medium (such as water or ethylene glycol solution) flows in from cooling medium inlet 504 and enters the channel on the other side of heat exchange plate 1 in a counter-current arrangement with the hydrochloric acid flow path. After absorbing heat from hydrochloric acid through heat exchange plate 1, it is discharged from cooling medium outlet 501. The arc-shaped fluid protrusion 13 on the surface of heat exchange plate 1 has a height of 3mm, which disturbs the fluid, breaks the boundary layer, enhances the turbulence effect, and avoids the problem of local overheating or uneven heat exchange caused by laminar flow in traditional devices. The sealing gasket 12 ensures that only one fluid (hydrochloric acid or cooling medium) flows in the sealing gasket 12 of every two heat exchange plates 1, preventing cross-contamination and maintaining a stable temperature difference.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing, comprising: The fixed plate (4), four flow channel pipes (5) provided on the fixed plate (4), an adjustment plate (2) provided at one end of the fixed plate (4), and heat exchange plates (1) provided between the fixed plate (4) and the adjustment plate (2) and fixed by clamping screws (3); characterized in that, clamping grooves (14) are provided at the upper and lower ends of the stacked heat exchange plates (1) so that the clamping screws (3) can be inserted, arc-shaped fluid protrusions (13) are provided on the surface of the heat exchange plates (1), and sealing gaskets (12) are provided on the surface of the heat exchange plates (1).

2. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 1, characterized in that, Also includes: A purification liquid channel (11) connected to the flow channel pipe (5) via a flange interface, a vertical plate (6) located in the purification liquid channel (11), a filter belt (8) located between the two vertical plates (6) and rotating in cooperation with a sprocket and chain mechanism (15), a motor (7) cooperating with the sprocket and chain mechanism (15), and a liquid inlet (10) located on the front side of the vertical plate (6).

3. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 2, characterized in that, The filter belt (8) is provided with a sliding high-pressure water sprayer (9) on the outside, and an impurity collection channel (16) is provided in the upper middle part of the filter belt (8) and fixed to the inside of the vertical plate (6).

4. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 3, characterized in that, The slidable high-pressure water sprayer (9) is connected to the vertical plate (6) via a slide rail (18), and an adjusting bolt is provided on the slide rail (18).

5. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 2, characterized in that, The mesh diameter of the filter belt (8) ranges from 0.1 mm to 0.5 mm.

6. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 3, characterized in that, The filter belt (8) is made of polytetrafluoroethylene.

7. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 1, characterized in that, The sealing gasket (12) is made of corrosion-resistant rubber.

8. The heat exchange device for cooling circulating hydrochloric acid during silica fume rinsing according to claim 1, characterized in that, The bottom of the fixing plate (4) is provided with a support foot (17).

Images