Heat exchange system for gradient utilization of energy in chemical process

Abstract

The invention relates to the technical field of chemical energy conservation, and discloses a chemical process energy gradient utilization heat exchange system which comprises a heat exchanger body, a shell cover is movably installed on the left side of the heat exchanger body, and a fluid inlet pipe extending to the top of the shell cover is fixedly installed on the inner top wall of the shell cover. A fluid outlet pipe extending to the bottom of the shell cover is fixedly installed on the inner bottom wall of the shell cover, a heat inlet pipe extending to the top of the heat exchanger body is fixedly installed on the inner top wall of the heat exchanger body, a heat outlet pipe extending to the bottom of the heat exchanger body is fixedly installed on the inner bottom wall of the heat exchanger body, and a bracket is fixedly installed at the bottom of the heat exchanger body. A connecting mechanism is arranged between the heat exchanger body and the outer side of the shell cover, a filtering mechanism extending to the inner side of the fluid inlet pipe is arranged at the top of the fluid inlet pipe, and according to the heat exchange system for gradient utilization of energy in the chemical process, the connecting mechanism is arranged, so that the purpose of convenient disassembly is achieved; the purpose of arranging a filtering structure is achieved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving technology in the chemical industry, specifically to a heat exchange system for the cascade utilization of energy in chemical processes. Background Technology

[0002] A search revealed Chinese patent publication number CN220418172U, which discloses a heat exchanger for chemical applications. The heat exchanger includes a main body, heat exchange tubes, a mounting plate, and mounting ports. The heat exchange tubes are divided into five groups, four of which are straight tubes and the other is an arc-shaped tube. When damage occurs, workers only need to remove and replace the straight or arc-shaped tube in the damaged area, eliminating the need for complete replacement and thus reducing maintenance costs. The existing technology described above has the following drawbacks: relying on flanges and bolts... The need for frequent cleaning of scale inside the heat exchanger necessitates frequent disassembly of the shell. Loosening and tightening multiple bolts during this process is time-consuming, and the lack of a corresponding filtration structure means that chemical hot and cold fluids often carry dust particles and other impurities when entering the high-efficiency chemical heat exchanger for heat exchange. The chemical hot and cold fluids themselves may also contain impurities. These impurities, after entering the heat exchanger and undergoing prolonged use, can cause pipe blockages, reducing its service life. Therefore, a chemical process energy cascade utilization heat exchange system is proposed to address these issues. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a heat exchange system for the cascade utilization of energy in chemical processes, which has the advantages of convenient disassembly and a filtration structure, thus solving the problems mentioned in the background section.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goals of convenient disassembly and the inclusion of a filtration structure, the present invention provides the following technical solution: a heat exchange system for energy cascade utilization in chemical processes, comprising a heat exchanger body, a shell cover movably mounted on the left side of the heat exchanger body, a fluid inlet pipe extending to its top fixedly mounted on the inner top wall of the shell cover, a fluid outlet pipe extending to its bottom fixedly mounted on the inner bottom wall of the shell cover, a heat inlet pipe extending to its top fixedly mounted on the inner top wall of the heat exchanger body, a heat outlet pipe extending to its bottom fixedly mounted on the inner bottom wall of the heat exchanger body, a bracket fixedly mounted on the bottom of the heat exchanger body, a connecting mechanism provided between the heat exchanger body and the outer side of the shell cover, a filtration mechanism extending to its inner side provided on the top of the fluid inlet pipe, and mounting mechanisms connected to the filtration mechanism provided on both the left and right sides of the fluid inlet pipe;

[0007] The connecting mechanism includes connecting rings. Connecting rings are fixedly installed on the outer sides of both the heat exchanger body and the shell cover. Sealing rings that fit together are fixedly installed on opposite sides of the two connecting rings. A bottom ring located outside the connecting pipe is movably installed between the bottom of the heat exchanger body and the shell cover. An outer frame is fixedly installed on both the front and rear sides of the bottom ring. A top ring located outside the connecting pipe and fitting against the outer sides of the heat exchanger body and the shell cover is movably installed on the top of the bottom ring. Connecting plates are fixedly installed on both the front and rear sides of the top ring. A vertical plate extending to the inner side of the outer frame is fixedly installed on one side of the connecting plate. A support rod is fixedly installed between the left and right sides of the inner wall of the outer frame. A rotating cylinder is rotatably connected to the outer side of the support rod. A bottom plate is fixedly installed at the bottom of the rotating cylinder. A push block extending to the outer side of the outer frame is fixedly installed on one side of the bottom plate. A top plate extending to one side of the vertical plate is fixedly installed at the top of the rotating cylinder. A fixing spring fixedly connected to the inner wall of the outer frame is fixedly installed on one side of the top plate. A wedge block that engages with the vertical plate is fixedly installed on the other side of the top plate.

[0008] Preferably, the filtration mechanism includes a mounting ring, on the top of the fluid inlet pipe, and a filter cartridge extending into the inside of the fluid inlet pipe is movably mounted on the inner side of the mounting ring.

[0009] Preferably, the installation mechanism includes an outer box, with the outer box fixedly installed on both the left and right sides of the fluid inlet pipe. A fixing plate is fixedly installed on the inner top wall of the outer box, a telescopic spring is fixedly installed on the bottom of the fixing plate, a U-shaped block is fixedly installed on the bottom of the telescopic spring, sliders extending to the outside of the outer box are fixedly installed on both the front and rear sides of the U-shaped block, a triangular block is fixedly installed on the bottom of the U-shaped block, mounting seats are fixedly installed on both the left and right sides of the mounting ring, a rotating block is rotatably connected to the inner side of the mounting seat, a swing plate extending to the inner side of the outer box is fixedly installed on the bottom of the swing plate, a right-angle plate located inside the outer box and in contact with the outer side of the triangular block is fixedly installed on one side of the swing plate, and limiting frames located on the outer sides of the two swing plates are fixedly installed on both the left and right sides of the fluid inlet pipe.

[0010] Preferably, the inner top wall of the shell cover has an installation hole adapted to the fluid inlet pipe, the inner bottom wall of the shell cover has a circular hole adapted to the fluid outlet pipe, the inner top wall of the heat exchanger body has a circular hole adapted to the heat inlet pipe, the inner bottom wall of the heat exchanger body has a circular hole adapted to the heat outlet pipe, and the number of brackets is two and they are symmetrically distributed from left to right.

[0011] Preferably, the top of the wedge block is inclined, the inner side of the vertical plate is provided with a card hole adapted to the wedge block, the inner top wall of the outer frame is open, and one inner wall of the outer frame is provided with a through hole adapted to the moving trajectory of the push block.

[0012] Preferably, the filter cartridge has filter holes on its inner side, and the size and number of filter holes can be set according to requirements. The inner top wall of the filter cartridge is designed to be open, and the bottom of the mounting ring has an arc-shaped groove that is compatible with the fluid inlet pipe.

[0013] Preferably, one inner wall of the outer box is open, the bottom wall of the outer box is open, the bottom of the triangular block is inclined, and mounting slots adapted to the sliding trajectory are provided on both the front and rear sides of the inner wall of the outer box. The number of telescopic springs inside a single outer box is two.

[0014] Preferably, the outer side of the slider is wrapped with a sponge sleeve, the two swing plates on both sides are symmetrically distributed, and the inner side of the mounting ring is hollow.

[0015] Preferably, a soft pad is provided on one side of the push block, the two outer frames are symmetrically distributed front and back, and the bottom ring and top ring are symmetrically distributed vertically.

[0016] (III) Beneficial Effects

[0017] Compared with existing technologies, the present invention provides a heat exchange system for the cascade utilization of energy in chemical processes, which has the following beneficial effects:

[0018] 1. This chemical process energy cascade utilization heat exchange system uses a connection mechanism that achieves detachable connection through a bottom ring, top ring, wedge block, and fixed spring. Pushing the push block causes the rotating drum to rotate around the support rod, which in turn causes the top plate to compress the fixed spring. The wedge block disengages from the locking hole in the vertical plate, and the top ring is lifted upwards, releasing the clamping force on the heat exchanger body and shell cover. Due to the close fit design of the sealing ring, the shell cover needs to be slightly rotated to overcome the friction force, and then the shell cover can be directly removed, achieving the purpose of convenient disassembly.

[0019] 2. This chemical process utilizes a heat exchange system with energy cascade utilization. By setting up a filtration mechanism and an installation mechanism, the filtration mechanism achieves detachable filtration through an installation ring and a filter cartridge. The installation mechanism is unlocked by pushing a push block, specifically by pushing the push block to disengage the triangular block from the right-angle plate, directly lifting the installation ring upwards, and removing the filter cartridge from the fluid inlet pipe. A new filter cartridge is then installed into the installation ring and reinstalled at the top of the fluid inlet pipe to filter the fluid, thus achieving the purpose of having a filtration structure. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0021] Figure 2 This is an exploded view of the connecting mechanism of the present invention;

[0022] Figure 3 This is a partial sectional perspective view of the connecting mechanism of the present invention;

[0023] Figure 4 This is a partial sectional perspective view of the connecting mechanism of the present invention;

[0024] Figure 5 This is a perspective view of the fluid inlet pipe and filtration mechanism of the present invention;

[0025] Figure 6 This is an exploded cross-sectional view of the installation mechanism of the present invention (viewed from below).

[0026] Figure 7 This is a sectional perspective view showing the connection between the filter mechanism and the installation mechanism of the present invention;

[0027] Figure 8 This is a partial sectional perspective view of the installation mechanism of the present invention.

[0028] In the diagram: 1 Heat exchanger body, 2 Shell cover, 3 Connecting mechanism, 301 Connecting ring, 302 Sealing ring, 303 Bottom ring, 304 Outer frame, 305 Top ring, 306 Connecting plate, 307 Vertical plate, 308 Support rod, 309 Rotary cylinder, 310 Bottom plate, 311 Push block, 312 Top plate, 313 Fixing spring, 314 Wedge block, 4 Fluid inlet pipe, 5 Filtration mechanism, 51 Mounting ring, 52 Filter cartridge, 6 Mounting mechanism, 601 Outer box, 602 Fixing plate, 603 Telescopic spring, 604 U-shaped block, 605 Slider, 606 Mounting seat, 607 Rotary block, 608 Swing plate, 609 Right angle plate, 610 Limiting frame, 7 Fluid outlet pipe, 8 Heat inlet pipe, 9 Heat outlet pipe, 10 Bracket. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-8This invention provides a technical solution: a heat exchange system for the energy cascade utilization of chemical processes, including a heat exchanger body 1, which serves as the core component of the entire heat exchange system, providing space and structural support for the heat exchange process. The heat exchanger body 1 is internally divided into upper and lower heat exchange zones. The upper zone uses spiral coils, and the lower zone uses finned tube bundles. High-temperature steam enters the upper coil from the inlet heat pipe 8 and exchanges heat counter-currently with process water flowing in from the fluid inlet pipe 4. After the steam condenses into hot water, it is discharged from the outlet heat pipe 9. The process water is heated to 120°C in the upper zone and then enters the lower zone, where it exchanges heat with medium-temperature heat transfer oil. The heat exchange is further increased to 180℃, and finally output from the fluid outlet pipe 7. A guide plate is set between the two heat exchange zones, and the angle is adjusted by an electric actuator to control the flow rate of the process water, thereby achieving dynamic optimization of heat exchange efficiency. A shell cover 2 is movably installed on the left side of the heat exchanger body 1, which is movably connected to the heat exchanger body 1 to form a closed heat exchange space. A fluid inlet pipe 4 extending to the top of the inner top wall of the shell cover 2 is fixedly installed, serving as a channel for the low-temperature fluid to enter the heat exchange system. The fluid to be heated is introduced into the heat exchanger body 1 to exchange heat with the high-temperature heat source. A fluid outlet pipe 7 extending to the bottom of the inner bottom wall of the cover 2 is fixedly installed, drawing the fluid whose temperature has increased after heat exchange from the heat exchanger body 1 and transporting it to subsequent processes or equipment to utilize energy. A heat inlet pipe 8 extending to the top of the inner top wall of the heat exchanger body 1 is fixedly installed, serving as a channel for the high-temperature heat source to enter the heat exchange system, introducing the high-temperature medium into the heat exchanger body 1 to provide heat for heat exchange. A heat outlet pipe 9 extending to the bottom of the inner bottom wall of the heat exchanger body 1 is fixedly installed, drawing the fluid whose temperature has decreased after heat exchange from the heat exchanger body 1 to the heat outlet. The source medium is drawn out from the heat exchanger body 1, and can be used for waste heat recovery or discharged to a suitable environment. A bracket 10 is fixedly installed at the bottom of the heat exchanger body 1 to support and stabilize the heat exchanger, ensuring that the heat exchanger remains stable during operation and preventing it from tipping over or being damaged due to vibration or external force. A connecting mechanism 3 is provided between the heat exchanger body 1 and the outer side of the shell cover 2. A filter mechanism 5 extending to the inside of the fluid inlet pipe 4 is provided at the top of the fluid inlet pipe 4. Installation mechanisms 6 connected to the filter mechanism 5 are provided on both the left and right sides of the fluid inlet pipe 4.

[0031] The inner top wall of the shell cover 2 is provided with an installation hole that matches the fluid inlet pipe 4, the inner bottom wall of the shell cover 2 is provided with a circular hole that matches the fluid outlet pipe 7, the inner top wall of the heat exchanger body 1 is provided with a circular hole that matches the heat inlet pipe 8, the inner bottom wall of the heat exchanger body 1 is provided with a circular hole that matches the heat outlet pipe 9, and there are two brackets 10 which are symmetrically distributed on the left and right.

[0032] The connecting mechanism 3 includes connecting rings 301. Connecting rings 301 are fixedly installed on the outer sides of both the heat exchanger body 1 and the shell cover 2, providing a basic connection point for the connecting mechanism 3 and facilitating the installation and fixing of other components. On opposite sides of the two connecting rings 301, mutually fitting sealing rings 302 are fixedly installed, forming a sealing structure to prevent leakage at the connection between the heat exchanger body 1 and the shell cover 2, ensuring that the internal pressure and medium of the system do not leak out. A bottom ring 303 is movably installed between the bottom of the heat exchanger body 1 and the shell cover 2, located outside the connecting pipe 301. Outer frames 304 are fixedly installed on both the front and rear sides of the bottom ring 303. A top ring 305 is movably installed on the top of the bottom ring 303, located outside the connecting pipe 301 and fitting against the outer sides of the heat exchanger body 1 and the shell cover 2. This top ring 305, in cooperation with the bottom ring 303, enhances the connection strength between the heat exchanger body 1 and the shell cover 2. Connecting plates 306 are fixedly installed on both the front and rear sides of the top ring 305. A connecting plate 306 is fixedly installed on one side of the connecting plate 306. A vertical plate 307 extending to the inner side of the outer frame 304 is installed, which engages with the wedge block 314 to achieve a snap-fit ​​fixation, ensuring the connection stability between the top ring 305 and the bottom ring 303. A support rod 308 is fixedly installed between the left and right sides of the inner wall of the outer frame 304. A rotating cylinder 309 is rotatably connected to the outer side of the support rod 308. A base plate 310 is fixedly installed at the bottom of the rotating cylinder 309. The rotating cylinder 309 is rotated by pushing the push block 311. An extension extending to the outer frame is fixedly installed on one side of the base plate 310. The push block 311 on the outside of 304 and the top of the rotating cylinder 309 are fixedly installed with a top plate 312 extending to one side of the vertical plate 307. A fixing spring 313 fixedly connected to the inner wall of the outer frame 304 is fixedly installed on one side of the top plate 312 to provide elastic force to the top plate 312, so that the wedge block 314 remains in the snap-fit ​​state with the vertical plate 307 when no external force is applied, ensuring the stability of the connecting mechanism 3. A wedge block 314 snap-fitted with the vertical plate 307 is fixedly installed on the other side of the top plate 312.

[0033] The top of the wedge block 314 is designed to be inclined. The inner side of the vertical plate 307 is provided with a card hole that matches the wedge block 314. The inner top wall of the outer frame 304 is designed to be open. One side of the inner wall of the outer frame 304 is provided with a through hole that matches the moving trajectory of the push block 311. A soft pad is provided on one side of the push block 311. The two outer frames 304 are symmetrically distributed front and back. The bottom ring 303 and the top ring 305 are symmetrically distributed vertically.

[0034] The filter mechanism 5 includes a mounting ring 51. The mounting ring 51 is movably mounted on the top of the fluid inlet pipe 4. A filter cartridge 52 extending to the inside of the fluid inlet pipe 4 is movably mounted on the inner side of the mounting ring 51, providing elasticity to the top plate 312 so that the wedge block 314 remains engaged with the vertical plate 307 when no external force is applied, ensuring the stability of the connection mechanism 3.

[0035] The filter cartridge 52 has filter holes on its inner side. The size and number of filter holes can be set according to requirements. The inner top wall of the filter cartridge 52 is designed to be open. The bottom of the mounting ring 51 has an arc-shaped groove that is compatible with the fluid inlet pipe 4.

[0036] The mounting mechanism 6 includes an outer box 601. The outer box 601 is fixedly mounted on both the left and right sides of the fluid inlet pipe 4. A fixing plate 602 is fixedly mounted on the inner top wall of the outer box 601. A telescopic spring 603 is fixedly mounted on the bottom of the fixing plate 602 to provide elasticity to the U-shaped block 604, allowing the U-shaped block 604 to maintain a certain position when no external force is applied, while being able to move up and down under external force. The U-shaped block 604 is fixedly mounted on the bottom of the telescopic spring 603. Slider blocks 605 extending to the outside of the outer box 601 are fixedly mounted on both the front and rear sides of the U-shaped block 604. A triangular block 611 is fixedly mounted on the bottom of the U-shaped block 604, fitting against the outer side of the right-angle plate 609. The U-shaped block 604... The up-and-down movement of the triangular block 611 interacts with the right-angle plate 609, thereby causing the swing plate 608 to swing, which in turn controls the installation and disassembly of the filter mechanism 5. Mounting bases 606 are fixedly installed on both the left and right sides of the mounting ring 51. A rotating block 607 is rotatably connected to the inner side of the mounting base 606. A swing plate 608 extending to the inner side of the outer box 601 is fixedly installed at the bottom of the rotating block 607. A right-angle plate 609 located inside the outer box 601 and in contact with the outer side of the triangular block 611 is fixedly installed on one side of the swing plate 608. Limiting frames 610 located outside the two swing plates 608 are fixedly installed on both the left and right sides of the fluid inlet pipe 4 to ensure that the swing plate 608 is aligned with the outer box 601.

[0037] One inner wall of the outer box 601 is open, the bottom wall of the outer box 601 is open, the bottom of the triangular block 611 is inclined, and the front and rear sides of the inner wall of the outer box 601 are provided with mounting strip holes that are adapted to the movement trajectory of the slider 605. There are two telescopic springs 603 inside the single outer box 601. The outer side of the slider 605 is covered with a sponge sleeve to reduce friction and wear during sliding. At the same time, it moves in the mounting strip holes on the inner wall of the outer box 601, restricting the movement trajectory of the U-shaped block 604 and ensuring its stable up and down sliding. The swing plates 608 on both sides are symmetrically distributed, and the inner side of the mounting ring 51 is hollow.

[0038] The high-temperature medium introduced by the heat inlet pipe 8 flows through the spiral coil or finned tube bundle inside the heat exchanger body 1, increasing the heat exchange area. The low-temperature fluid enters from the fluid inlet pipe 4 and flows through the shell-side space of the outer wall of the coil or tube bundle, forming counter-current or cross-current heat exchange with the high-temperature medium. Baffles or supports are installed on the inner wall of the heat exchanger body 1 to fix the tube bundle and guide the fluid to be evenly distributed, avoiding short circuits. The heat exchanger body 1 is divided into 2-3 independent heat exchange sections, each with a medium inlet of different flow rates or temperatures, to achieve gradual heat release. For example: First section: high-temperature medium (300℃) and low-temperature fluid (20℃) exchange heat for the first time, and the low-temperature fluid is heated to 100℃; Second section: medium-temperature medium (200℃) and 100℃ fluid exchange heat for the second time, and the fluid is heated to 150℃; Third section: low-temperature medium (100℃) and 150℃ fluid exchange heat for the final time, and the fluid reaches the target temperature (180℃). Each heat exchange zone inlet is equipped with a rotatable guide vane, which controls the fluid flow rate by adjusting the angle to optimize heat exchange efficiency. The low-temperature medium discharged from the heat outlet pipe 9 is introduced into the preheater through a bypass to preheat the fresh low-temperature fluid about to enter the heat exchanger, reducing the load on the main heat exchanger. The outer wall interlayer of the heat exchanger body 1 is filled with a phase change material (such as paraffin) to absorb excess heat during peak periods and release it during low-temperature periods, thus smoothing out temperature fluctuations.

[0039] During use, place the heat exchanger body 1 on a stable surface and secure it with the bracket 10 to ensure stability. Align the shell cover 2 with the heat exchanger body 1 and seal it using the connecting mechanism 3. Place the top ring 305 outside the connecting ring 301, insert the vertical plate 307 into the outer frame 304, and push the push block 311 to make the wedge block 314 engage with the locking hole of the vertical plate 307. Secure the top ring 305 and the bottom ring 303. Check that the sealing ring 302 fits tightly to ensure there is no risk of leakage. Insert the filter cartridge 52 into the mounting ring 51, ensuring that the filter holes face the direction of fluid flow. Place the mounting ring 51 on top of the fluid inlet pipe 4, making the arc groove fit against the pipe opening. Press down on the mounting ring 51 to make the swing plate 608 swing within the outer box 601. The right-angle plate 609 cooperates with the triangular block 611, and the elastic force of the telescopic spring 603 secures the device. Install the mounting ring 51, open the heat source input valve to allow the high-temperature medium to enter the heat exchanger body 1 through the heat inlet pipe 8, open the fluid input valve to allow the low-temperature fluid to enter the system through the fluid inlet pipe 4, and participate in heat exchange after filtration. Monitor the temperature and flow rate of the fluid outlet pipe 7 to ensure that the heat exchange efficiency meets the process requirements. Monitor the medium temperature of the outlet pipe 9 to determine whether it is necessary to adjust the heat source input or perform waste heat recovery. Push the slider 605 to compress the U-shaped block 604 and the telescopic spring 603, and separate the triangular block 611 from the right angle plate 609. Remove the mounting ring 51, clean or replace the filter cartridge 52, close the heat source and fluid input valves, drain the medium in the system, disassemble the connecting mechanism 3, separate the shell cover 2 from the heat exchanger body 1, use a cleaning agent to rinse the inner wall of the heat exchange tube to remove scale or deposits, reassemble the system, and ensure good sealing.

[0040] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0041] In summary, this chemical process energy cascade utilization heat exchange system, through the setting of a connecting mechanism 3, achieves detachable connection via a bottom ring 303, a top ring 305, a wedge block 314, and a fixing spring 313. Pushing the push block 311 causes the rotating drum 309 to rotate around the support rod 308, driving the top plate 312 to compress the fixing spring 313. The wedge block 314 disengages from the locking hole in the vertical plate 307, lifting the top ring 305 upwards, releasing the clamping of the heat exchanger body 1 and the shell cover 2. Due to the fitting design of the sealing ring 302, the shell cover 2 needs to be slightly rotated to overcome friction before it can be directly removed, achieving convenient disassembly. Through the setting of a filtration mechanism 5 and an installation mechanism 6, the filtration mechanism 5 achieves detachable filtration via an installation ring 51 and a filter cartridge 52, and is unlocked by the push block 311 of the installation mechanism 6. Specifically, pushing... The push block 311 disengages the triangular block 611 from the right-angle plate 609, lifting the mounting ring 51 directly upwards. The filter cartridge 52 is then removed from the fluid inlet pipe 4. The new filter cartridge 52 is inserted into the mounting ring 51 and reinstalled on top of the fluid inlet pipe 4 to filter the fluid. This achieves the purpose of having a filtration structure and solves the problem of locking via flanges and bolts. Since the heat exchanger needs frequent cleaning of scale inside, the shell needs to be disassembled frequently. Loosening and tightening multiple bolts during this process is time-consuming, and there is no corresponding filtration structure. When chemical hot and cold fluids enter the high-efficiency chemical heat exchanger for heat exchange, they often carry impurities such as dust particles. The chemical hot and cold fluids themselves may also contain impurities. These impurities may cause pipe blockage after entering the heat exchanger and being used for a long time, reducing the service life of the heat exchanger.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange system for energy cascade utilization in chemical processes, comprising a heat exchanger body (1), wherein a shell cover (2) is movably installed on the left side of the heat exchanger body (1), a fluid inlet pipe (4) extending to its top is fixedly installed on the inner top wall of the shell cover (2), a fluid outlet pipe (7) extending to its bottom is fixedly installed on the inner bottom wall of the shell cover (2), a heat inlet pipe (8) extending to its top is fixedly installed on the inner top wall of the heat exchanger body (1), a heat outlet pipe (9) extending to its bottom is fixedly installed on the inner bottom wall of the heat exchanger body (1), and a bracket (10) is fixedly installed at the bottom of the heat exchanger body (1), characterized in that: A connecting mechanism (3) is provided between the heat exchanger body (1) and the outer side of the shell cover (2). A filter mechanism (5) extending to the inner side of the fluid inlet pipe (4) is provided at the top. An installation mechanism (6) connected to the filter mechanism (5) is provided on both the left and right sides of the fluid inlet pipe (4). The connecting mechanism (3) includes a connecting ring (301). A connecting ring (301) is fixedly installed on the outer sides of both the heat exchanger body (1) and the shell cover (2). Sealing rings (302) are fixedly installed on opposite sides of the two connecting rings (301). A bottom ring (303) located outside the connecting pipe (301) is movably installed between the bottom of the heat exchanger body (1) and the shell cover (2). An outer frame (304) is fixedly installed on both the front and rear sides of the bottom ring (303). A top ring (305) located outside the connecting pipe (301) and in contact with the outer sides of the heat exchanger body (1) and the shell cover (2) is movably installed on the top of the bottom ring (303). A connecting plate (306) is fixedly installed on both the front and rear sides of the top ring (305). One side of the connecting plate (306)... A vertical plate (307) extending to the inner side of the outer frame (304) is fixedly installed. A support rod (308) is fixedly installed between the left and right sides of the inner wall of the outer frame (304). A rotating cylinder (309) is rotatably connected to the outer side of the support rod (308). A bottom plate (310) is fixedly installed at the bottom of the rotating cylinder (309). A push block (311) extending to the outer side of the outer frame (304) is fixedly installed on one side of the bottom plate (310). A top plate (312) extending to one side of the vertical plate (307) is fixedly installed at the top of the rotating cylinder (309). A fixing spring (313) fixedly connected to the inner wall of the outer frame (304) is fixedly installed on one side of the top plate (312). A wedge block (314) engaging with the vertical plate (307) is fixedly installed on the other side of the top plate (312).

2. The heat exchange system for cascaded energy utilization in chemical processes according to claim 1, characterized in that: The filtration mechanism (5) includes a mounting ring (51), which is movably mounted on the top of the fluid inlet pipe (4), and a filter cartridge (52) extending to the inside of the fluid inlet pipe (4) is movably mounted on the inner side of the mounting ring (51).

3. The heat exchange system for cascaded energy utilization in chemical processes according to claim 1, characterized in that: The installation mechanism (6) includes an outer box (601). The outer box (601) is fixedly installed on both the left and right sides of the fluid inlet pipe (4). A fixing plate (602) is fixedly installed on the inner top wall of the outer box (601). A telescopic spring (603) is fixedly installed on the bottom of the fixing plate (602). A U-shaped block (604) is fixedly installed on the bottom of the telescopic spring (603). Slider blocks (605) extending to the outside of the outer box (601) are fixedly installed on both the front and rear sides of the U-shaped block (604). A triangular block (61) is fixedly installed on the bottom of the U-shaped block (604). 1) Mounting bases (606) are fixedly installed on both the left and right sides of the mounting ring (51). A rotating block (607) is rotatably connected to the inner side of the mounting base (606). A swing plate (608) extending to the inner side of the outer box (601) is fixedly installed at the bottom of the rotating block (607). A right-angle plate (609) located inside the outer box (601) and in contact with the outer side of the triangular block (611) is fixedly installed on one side of the swing plate (608). Limiting frames (610) located outside the two swing plates (608) are fixedly installed on both the left and right sides of the fluid inlet pipe (4).

4. The heat exchange system for cascaded energy utilization in chemical processes according to claim 1, characterized in that: The inner top wall of the shell cover (2) is provided with an installation hole that matches the fluid inlet pipe (4), the inner bottom wall of the shell cover (2) is provided with a circular hole that matches the fluid outlet pipe (7), the inner top wall of the heat exchanger body (1) is provided with a circular hole that matches the heat inlet pipe (8), the inner bottom wall of the heat exchanger body (1) is provided with a circular hole that matches the heat outlet pipe (9), and there are two brackets (10) that are symmetrically distributed on the left and right.

5. The heat exchange system for cascaded energy utilization in chemical processes according to claim 1, characterized in that: The top of the wedge block (314) is inclined, the inner side of the vertical plate (307) is provided with a card hole that matches the wedge block (314), the inner top wall of the outer frame (304) is open, and the inner wall of one side of the outer frame (304) is provided with a through hole that matches the moving trajectory of the push block (311).

6. The heat exchange system for cascaded energy utilization in chemical processes according to claim 2, characterized in that: The filter cylinder (52) has filter holes on its inner side. The size and number of filter holes can be set according to requirements. The inner top wall of the filter cylinder (52) is designed with an opening. The bottom of the mounting ring (51) has an arc-shaped groove that is compatible with the fluid inlet pipe (4).

7. The heat exchange system for cascaded energy utilization in chemical processes according to claim 3, characterized in that: The inner wall of the outer box (601) is open on one side, the bottom wall of the outer box (601) is open, the bottom of the triangular block (611) is inclined, and the inner wall of the outer box (601) has mounting holes on both the front and rear sides that are adapted to the movement trajectory of the slider (605). The number of telescopic springs (603) inside a single outer box (601) is two.

8. The heat exchange system for cascaded energy utilization in chemical processes according to claim 3, characterized in that: The outer side of the slider (605) is covered with a sponge sleeve, the two swing plates (608) are symmetrically distributed, and the inner side of the mounting ring (51) is hollow.

9. The heat exchange system for cascaded energy utilization in chemical processes according to claim 1, characterized in that: A soft pad is provided on one side of the push block (311), the two outer frames (304) are symmetrically distributed front and back, and the bottom ring (303) and the top ring (305) are symmetrically distributed vertically.

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