Waste heat recovery device for dichloropropene production

Abstract

This disclosure relates to the technical field of waste heat recovery. One embodiment of this disclosure provides a waste heat recovery device for dichloropropylene production, comprising: a base plate, a foundation, and a shell. The foundation is vertically fixed to the base plate, and the shell is disposed on the foundation. A fixing assembly is disposed between the shell and the foundation. Flow chambers are all opened within the side surface of the foundation and are distributed in multiple rows. Heat exchange components are disposed on the foundation and the shell, and the heat exchange components include a main inlet pipe and a main outlet pipe, which are respectively disposed at the top and bottom of the foundation. Both the main inlet pipe and the main outlet pipe are connected to the flow chambers, and several solenoid valves are installed on both the main inlet pipe and the main outlet pipe. This technical solution solves the technical problem of inconvenient disassembly and maintenance of existing heat exchangers in practical applications.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of waste heat recovery technology, and more specifically, to a waste heat recovery device for dichloropropylene production. Background Technology

[0002] Dichloropropylene, an important chemical raw material, is widely used in the synthesis of pesticides, pharmaceutical intermediates, and polymer materials. Its production process often involves the release of significant amounts of heat, such as exothermic reactions in reactors and steam from the top of distillation columns. Directly releasing this waste heat not only results in substantial energy waste but also exacerbates environmental thermal pollution, contradicting the current industry trends of energy conservation, emission reduction, and green production. Therefore, introducing waste heat recovery devices into dichloropropylene production is of great significance for reducing energy consumption and improving economic efficiency for enterprises.

[0003] Currently, waste heat recovery in dichloropropylene production largely relies on heat exchangers, which transfer heat energy from the high-temperature medium to the low-temperature medium (such as cold water or air) for secondary utilization. However, existing heat exchangers present significant challenges in practical applications, including inconvenience in disassembly and maintenance. Due to the complex production environment of dichloropropylene and the potential presence of corrosive components in the medium, internal pipes and heat exchange fins of the heat exchanger are prone to scaling, corrosion, or blockage, requiring regular disassembly, cleaning, inspection, or replacement of components.

[0004] Traditional heat exchangers often use fixed welding or multiple bolts for connection, requiring significant time to remove bolts or cut weld points during disassembly. Reassembly is then necessary after maintenance, increasing the workload for maintenance personnel, extending equipment downtime, and potentially leading to decreased sealing at connections due to repeated disassembly. This can result in media leakage risks, affecting waste heat recovery efficiency and production safety, and failing to meet the demands of continuous and efficient dichloropropylene production. Therefore, developing a waste heat recovery device that is easy to disassemble and maintain is crucial for improving the stability of waste heat recovery systems in dichloropropylene production. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a waste heat recovery device for dichloropropylene production, which solves the technical problem that existing heat exchangers in practical applications are inconvenient to disassemble and maintain.

[0006] According to one aspect, at least one embodiment of this disclosure provides a waste heat recovery device for dichloropropylene production, comprising:

[0007] The base plate, the foundation base, and the outer shell are provided. The foundation base is vertically fixed to the base plate, and the outer shell is disposed on the foundation base.

[0008] A fixing component is disposed between the housing and the base;

[0009] Several flow chambers and heat exchange components are provided. The flow chambers are all opened in the side surface of the base and are arranged in multiple rows. The heat exchange components are disposed on the base and the outer shell.

[0010] The heat exchange assembly includes a main inlet pipe and a main outlet pipe, which are respectively located at the top and bottom of the base. Both the main inlet pipe and the main outlet pipe are connected to the flow cavity, and several solenoid valves are installed on both the main inlet pipe and the main outlet pipe.

[0011] As a further technical solution, the surface of the base is provided with a number of mounting grooves, the mounting grooves are connected to the flow cavity, and a heat exchange tube is inserted into a pair of the mounting grooves. One end of the heat exchange tube is fixedly connected to the mounting groove by bolts.

[0012] As a further technical solution, flushing pipes are inserted into several mounting slots located at the top and bottom. The flushing pipes are fixedly connected to the mounting slots by bolts, and a sealing plug is screwed to one end of each flushing pipe.

[0013] As a further technical solution, a medium connecting pipe is provided at the top and bottom of the outer shell. An impurity filter element is inserted into the medium connecting pipe at the top. A clamping frame is fixedly connected to the top of the outer shell by bolts, and the upper end of the clamping frame is inserted into the medium connecting pipe.

[0014] As a further technical solution, the fixing component includes several fixing ears, each of which is fixed around the outer surface of the base. A positioning rod is provided on each fixing ear. Several connecting ears are provided around the outer surface of the housing. The connecting ears are fitted onto the positioning rods, and nuts are connected to the positioning rods by threaded engagement.

[0015] As a further technical solution, a support frame is provided on the surface of the base plate, and a number of support wheels are rotatably connected to the top of the support frame. The support wheels are arranged in two rows, and the interval between the two rows of support wheels is larger than the outer diameter of the medium connection pipe.

[0016] As a further technical solution, the outer casing is fitted over the outside of the flushing pipe, and a sealing sleeve is connected between the outer casing and the flushing pipe.

[0017] As a further technical solution, a sealing groove is provided on the surface of the base, and the outer shell is inserted into the sealing groove.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the heat exchange assembly, through modular design and independent control, solves the problem of inconvenient disassembly and maintenance of traditional heat exchangers. The heat exchange tubes and flushing tubes are bolted together and can be individually disassembled and replaced without overall disassembly. Solenoid valves control individual flow chambers, allowing maintenance to close only the corresponding unit without affecting overall operation. The flushing tubes facilitate cleaning of the flow chambers and heat exchange tubes, and the impurity filter element reduces clogging and improves heat exchange efficiency. This design shortens maintenance time, reduces labor intensity, adapts to the continuous production requirements of dichloropropylene, and ensures stable waste heat recovery, reducing energy waste. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an isometric drawing of the present disclosure;

[0023] Figure 3 This is a cross-sectional view of the present disclosure;

[0024] Figure 4 This is another sectional view of the present disclosure;

[0025] In the diagram: 1. Base plate; 2. Foundation base; 3. Outer shell; 4. Flow chamber; 5. Heat exchange assembly; 5-1. Main inlet pipe; 5-2. Main outlet pipe; 5-3. Solenoid valve; 5-4. Mounting groove; 5-5. Heat exchange tube; 5-6. Flushing pipe; 5-7. Sealing plug; 5-8. Medium connection pipe; 5-9. Impurity filter element; 5-10. Pressing frame; 6. Fixing assembly; 6-1. Fixing ear; 6-2. Positioning rod; 6-3. Connecting ear; 6-4. Nut; 7. Support frame; 8. Support wheel; 9. Sealing sleeve; 10. Sealing groove. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" 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 disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended 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. Therefore, they should not be construed as limitations on this disclosure.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-4 As shown, a waste heat recovery device for dichloropropylene production according to an embodiment of this disclosure is illustrated, comprising:

[0033] The base plate 1, the foundation base 2, and the outer shell 3 are provided. The foundation base 2 is vertically fixed on the base plate 1, and the outer shell 3 is disposed on the foundation base 2.

[0034] Fixing component 6 is disposed between the outer shell 3 and the base 2;

[0035] A plurality of flow chambers 4 and a heat exchange assembly 5 are provided. The flow chambers 4 are all opened in the side surface of the base 2 and are arranged in multiple rows. The heat exchange assembly 5 is disposed on the base 2 and the outer shell 3.

[0036] The heat exchange assembly 5 includes a main inlet pipe 5-1 and a main outlet pipe 5-2, which are respectively located at the top and bottom of the base 2. Both the main inlet pipe 5-1 and the main outlet pipe 5-2 are connected to the flow cavity 4. Several solenoid valves 5-3 are installed on both the main inlet pipe 5-1 and the main outlet pipe 5-2. Several mounting slots 5-4 are formed on the surface of the base 2, and these slots are connected to the flow cavity 4. A heat exchange tube 5-5 is inserted into a pair of mounting slots 5-4, with one end of the heat exchange tube 5-5 connected to the mounting cavity 4. The grooves 5-4 are fixedly connected by bolts. A flushing pipe 5-6 is inserted into several of the mounting grooves 5-4 located at the top and bottom. The flushing pipe 5-6 is fixedly connected to the mounting groove 5-4 by bolts. A sealing plug 5-7 is screwed to one end of the flushing pipe 5-6. A medium connecting pipe 5-8 is provided at the top and bottom of the outer shell 3. An impurity filter element 5-9 is inserted into the medium connecting pipe 5-8 located at the top. A clamping frame 5-10 is fixedly connected to the top of the outer shell 3 by bolts. The upper end of the clamping frame 5-10 is inserted into the medium connecting pipe 5-8.

[0037] In some examples, to facilitate easy loading, unloading, and rinsing maintenance, a heat exchange assembly 5 is designed. This assembly includes a main water inlet pipe 5-1 at the top of the base 2 and a main water outlet pipe 5-2 at the bottom, both connected to multiple flow chambers 4. Solenoid valves 5-3 on the pipes can independently control the water flow in the corresponding flow chamber 4. Mounting grooves 5-4 on the surface of the base 2 are connected to the flow chambers 4. Heat exchange tubes 5-5 are inserted into the mounting grooves 5-4 at both ends and fixed with bolts, forming multiple independent heat exchange units. Rinsing pipes 5-6 in the top and bottom mounting grooves 5-4 are also fixed with bolts, and a sealing plug 5-7 at one end can be tightened to seal the pipe opening. Medium connecting pipes 5-8 at the top and bottom of the outer shell 3 allow the medium to circulate inside the outer shell 3, generating a heat exchange effect. An impurity filter element 5-9 in the top medium connecting pipe 5-8 filters impurities in the medium and is fixed with bolts by a clamping frame 5-10 to prevent the filter element from loosening.

[0038] When maintenance is required, close the solenoid valve 5-3 to cut off the water flow, and remove the fixing bolts of the heat exchange tube 5-5 to remove it from the mounting slot 5-4 for easy replacement. Unscrew the sealing plug 5-7 of the flushing pipe 5-6 and connect it to the flushing equipment to clean the flow chamber 4 and the inside of the heat exchange tube 5-5. The solenoid valve 5-3 enables independent control of a single heat exchange unit, the modular structure reduces maintenance downtime, and the filter element prevents impurities from clogging the heat exchange tube 5-5, improving waste heat recovery efficiency and equipment lifespan.

[0039] like Figures 1-4 As shown in the figure, the fixing component 6 in this embodiment includes a plurality of fixing ears 6-1, each fixing ear 6-1 being fixed around the outer surface of the base 2. A positioning rod 6-2 is provided on the fixing ear 6-1. A plurality of connecting ears 6-3 are provided around the surface of the outer shell 3. The connecting ears 6-3 are fitted onto the positioning rod 6-2. A nut 6-4 is connected to the positioning rod 6-2 by a threaded connection.

[0040] In some examples, to achieve a stable connection between the outer shell 3 and the base 2, a fixing component 6 is designed. This component includes fixing ears 6-1 distributed around the outer surface of the base 2 and welded to the base 2. A positioning rod 6-2 is vertically fixed to the surface of the fixing ears 6-1, maintaining perpendicularity with the fixing ears 6-1. Connecting ears 6-3 on the surface of the outer shell 3 correspond one-to-one with the fixing ears 6-1 and are fitted onto the positioning rod 6-2. After the nut 6-4 on the positioning rod 6-2 is tightened through a threaded engagement, its lower end abuts against the surface of the connecting ear 6-3, pressing the outer shell 3 firmly onto the base 2.

[0041] Both the fixing lug 6-1 and the connecting lug 6-3 are made of metal sheet, possessing sufficient strength. The positioning rod 6-2 and the nut 6-4 cooperate to form an axial clamping force, ensuring tight contact between the outer shell 3 and the base 2, preventing media leakage. The evenly distributed fixing components 6 ensure balanced force on the outer shell 3, preventing deformation of the outer shell 3 due to internal media pressure.

[0042] During installation, align the connecting lug 6-3 of the outer casing 3 with the positioning rod 6-2 and tighten the nut 6-4 to complete the fixation; during disassembly, loosen the nut 6-4 to remove the outer casing 3, making the operation simple. This component ensures a stable connection between the outer casing 3 and the base 2 through multi-point positioning and rigid clamping, providing a closed heat exchange space for the heat exchange component 5, which can meet the high temperature and high pressure requirements in the production of dichloropropylene.

[0043] For example, such as Figure 4 As shown, a support frame 7 is provided on the surface of the base plate 1, and a number of support wheels 8 are rotatably connected to the top of the support frame 7. The support wheels 8 are arranged in two rows, and the spacing between the two rows of support wheels 8 is larger than the outer diameter of the medium connecting pipe 5-8.

[0044] In some examples, the double-row support wheels 8 on the top of the support frame 7 on the surface of the base plate 1 can support the outer casing 3. The spacing between the double rows is larger than the outer diameter of the medium connection pipe 5-8, which facilitates the support and movement of the outer casing 3 during loading and unloading. The rotation of the support wheels 8 makes loading and unloading the outer casing 3 easier and improves the convenience of operation.

[0045] For example, such as Figure 1 As shown, the outer shell 3 is fitted onto the outside of the flushing pipe 5-6, and a sealing sleeve 9 is connected between the outer shell 3 and the flushing pipe 5-6.

[0046] In some examples, the sealing sleeve 9 between the outer casing 3 and the flushing pipes 5-6 is made of an elastic material that fits tightly against both surfaces. The sealing sleeve 9 prevents leakage of the heat exchange medium while allowing the flushing pipes 5-6 to move slightly to accommodate expansion and contraction due to temperature changes, ensuring the sealing performance and safety of the device.

[0047] For example, such as Figure 4 As shown, a sealing groove 10 is provided on the surface of the base 2, and the outer shell 3 is inserted into the sealing groove 10.

[0048] In some examples, a sealing gasket can be placed in the sealing groove 10 of the base 2, and the sealing gasket is pressed tightly after the housing 3 is inserted. The sealing gasket deforms to fill the gap, enhancing the sealing performance between the housing 3 and the base 2, preventing media leakage, and adapting to high-temperature and high-pressure working environments.

[0049] In practical use: Fix the device in the working area. The outer casing 3 is fitted onto the positioning rod 6-2 of the base 2 via the connecting lug 6-3. Tighten the nut 6-4 to insert the outer casing 3 into the sealing groove 10. The sealing sleeve 9 ensures a seal at the connection between the outer casing 3 and the flushing pipe 5-6. The main inlet pipe 5-1 and the main outlet pipe 5-2 are connected to the water source. The medium connection pipe 5-8 connects to the waste heat medium produced by dichloropropylene. The impurity filter element 5-9 filters impurities from the medium. Start the device. The solenoid valve 5-3 controls the water flow into the flow chamber 4, where it exchanges heat with the waste heat medium in the heat exchange tube 5-5. The recovered heat is discharged through the main outlet pipe 5-2. When maintenance is required, loosen the nut 6-4 to remove the outer casing 3, close the corresponding solenoid valve 5-3, remove the bolts to take out the heat exchange tube 5-5 for inspection, unscrew the sealing plug 5-7 to clean the flow chamber 4 through the flushing pipe 5-6, replace the impurity filter element 5-9, and reassemble to ensure continuous and efficient operation of the device.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A waste heat recovery device for dichloropropylene production, characterized in that, include: The base plate (1), the foundation base (2), and the outer shell (3) are provided. The foundation base (2) is vertically fixed on the base plate (1), and the outer shell (3) is disposed on the foundation base (2). A fixing component (6) is disposed between the outer shell (3) and the base (2); A plurality of flow chambers (4) and a heat exchange assembly (5) are provided. The flow chambers (4) are all opened in the side surface of the base (2) and are arranged in multiple rows. The heat exchange assembly (5) is provided on the base (2) and the outer shell (3). The heat exchange assembly (5) includes a main water inlet pipe (5-1) and a main water outlet pipe (5-2). The main water inlet pipe (5-1) and the main water outlet pipe (5-2) are respectively located at the top and bottom of the base (2). The main water inlet pipe (5-1) and the main water outlet pipe (5-2) are respectively connected to the flow chamber (4). Several solenoid valves (5-3) are installed on the main water inlet pipe (5-1) and the main water outlet pipe (5-2).

2. The waste heat recovery device for dichloropropylene production according to claim 1, characterized in that, The base (2) has several mounting slots (5-4) on its surface. The mounting slots (5-4) are connected to the flow cavity (4). A heat exchange tube (5-5) is inserted into a pair of mounting slots (5-4). One end of the heat exchange tube (5-5) is fixedly connected to the mounting slot (5-4) by bolts.

3. The waste heat recovery device for dichloropropylene production according to claim 2, characterized in that, A flushing pipe (5-6) is inserted into several mounting slots (5-4) located at the top and bottom. The flushing pipe (5-6) is fixedly connected to the mounting slot (5-4) by bolts. One end of the flushing pipe (5-6) is connected to a sealing plug (5-7) by thread.

4. The waste heat recovery device for dichloropropylene production according to claim 3, characterized in that, The top and bottom of the outer shell (3) are provided with medium connecting pipes (5-8). The impurity filter element (5-9) is inserted into the medium connecting pipe (5-8) located at the top. The top of the outer shell (3) is fixedly connected to a clamping frame (5-10) by bolts. The upper end of the clamping frame (5-10) is inserted into the medium connecting pipe (5-8).

5. The waste heat recovery device for dichloropropylene production according to claim 1, characterized in that, The fixing component (6) includes several fixing ears (6-1), each fixing ear (6-1) is fixed around the outer surface of the base (2), and a positioning rod (6-2) is provided on the fixing ear (6-1). Several connecting ears (6-3) are provided around the surface of the outer shell (3), and the connecting ears (6-3) are fitted onto the positioning rod (6-2). A nut (6-4) is connected to the positioning rod (6-2) by a threaded connection.

6. The waste heat recovery device for dichloropropylene production according to claim 4, characterized in that, The base plate (1) is provided with a support frame (7), and the top of the support frame (7) is rotatably connected with a number of support wheels (8). The support wheels (8) are arranged in two rows, and the spacing between the two rows of support wheels (8) is larger than the outer diameter of the medium connection pipe (5-8).

7. The waste heat recovery device for dichloropropylene production according to claim 4, characterized in that, The outer casing (3) is fitted over the outside of the flushing pipe (5-6), and a sealing sleeve (9) is connected between the outer casing (3) and the flushing pipe (5-6).

8. The waste heat recovery device for dichloropropylene production according to claim 1, characterized in that, The base (2) has a sealing groove (10) on its surface, and the outer shell (3) is inserted into the sealing groove (10).

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