A heat exchange device for a reaction kettle unit

Abstract

The utility model relates to chemical engineering equipment technical field discloses a kind of heat exchange devices for reation kettle unit, the device includes mounting mechanism and heat exchange mechanism;Mounting mechanism is suitable for the guide rail of the whole slide of reaction kettle inner wall;Heat exchange mechanism includes multiple groups of heat exchange coil pipes arranged along vertical direction, each coil pipe is connected in parallel by independent valve, and is detachably fixed on mounting mechanism by quick release structure comprising hinged support and arc-shaped buckling plate.The utility model solves the problem of uneven heat exchange, energy waste and maintenance difficulty of existing heat exchange device, has the effect of uniform heat exchange, on-demand energy supply, energy saving and consumption reduction, and can realize the quick disassembly and maintenance of single coil pipe.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering equipment technology, and in particular to a heat exchange device for a reaction vessel unit. Background Technology

[0002] Reactors are core equipment widely used in industries such as chemical, pharmaceutical, and food processing to achieve processes such as material mixing, reaction, and crystallization. Precise temperature control of the materials is crucial in these processes; therefore, heat exchangers are an indispensable component of reactors.

[0003] Currently, commonly used built-in heat exchangers in reactors typically employ a single, continuous heat exchange coil structure. While simple, this structure reveals several shortcomings in practical use. First, as the heat exchange medium flows downwards within a single, lengthy coil, it continuously exchanges heat with the material, causing significant temperature variations along the flow path. For example, during heating, the medium reaches its highest temperature at the top, decreasing considerably by the time it reaches the bottom. This temperature gradient directly results in inconsistent heat exchange intensity across different height zones within the reactor, with the upper layer experiencing intense heat exchange while the lower layer undergoes slow heat exchange, thus affecting the uniformity of the reaction rate and the quality of the final product. Second, in many actual production scenarios, reactors are not always operating at full capacity; the material filling volume may only be a portion of the reactor's capacity. For the aforementioned integral heat exchange coil, even when the material level is low, the coil suspended above the gas phase continues to receive heat exchange medium, heating or cooling the ineffective area. This directly constitutes significant energy waste and increases production operating costs.

[0004] More seriously, this type of integrated heat exchange coil presents significant maintenance challenges. Because the coil is in constant contact with corrosive or fouling materials, its surface requires regular cleaning and may be locally damaged by corrosion or erosion. However, its integral welded or fixed structure makes removing the massive coil assembly from the reactor vessel for thorough cleaning or repair extremely difficult, if not impossible. Once a leak or damage occurs in any part of the coil, the entire expensive heat exchange coil assembly often has to be scrapped and replaced, resulting in substantial economic losses, prolonged equipment downtime, and severe disruption to production continuity. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heat exchange device for reactor units, which aims to improve the problems of uneven heat exchange effect, energy waste, and extremely difficult and costly maintenance and repair due to the fixed structure of heat exchange devices for reactor units.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange device for a reactor unit, comprising: an installation mechanism and a heat exchange mechanism disposed on the installation mechanism; the heat exchange mechanism includes a medium inlet, a medium outlet, and at least two heat exchange coils arranged in a vertical direction.

[0007] The mounting mechanism has a sliding part adapted to slide along the inner wall of the reactor body, and a fixing part adapted to be clamped and fixed at the opening of the reactor body.

[0008] Furthermore, each of the heat exchange coils is connected in parallel between the medium inlet and the medium outlet via its own independent inlet branch pipe, first valve, outlet branch pipe, and second valve.

[0009] Preferably, the mounting mechanism includes a top plate, a bottom plate, and a sliding rod connecting the top plate and the bottom plate; the top plate constitutes the fixing part, and the sliding rod constitutes the sliding part.

[0010] Preferably, the slide rod is provided with a hinge support, and an arc-shaped buckle plate is rotatably connected to the hinge support. The arc-shaped buckle plate is provided with bolts for locking, and the arc-shaped buckle plate is suitable for clamping and fixing the heat exchange coil.

[0011] Preferably, the inlet branch pipe is detachably connected to the inlet end of the heat exchange coil via a first flange, and the outlet branch pipe is detachably connected to the outlet end of the heat exchange coil via a second flange.

[0012] Preferably, the top plate is a flat plate structure, which is configured to be clamped together by the internal threaded ring of the reactor body and the external threaded ring on the reactor cover.

[0013] Preferably, the heat exchange mechanism further includes an inlet four-way and an outlet four-way; a plurality of inlet branches converge and are connected to the inlet four-way, and a plurality of outlet branches converge and are connected to the outlet four-way.

[0014] Preferably, the number of heat exchange coils is three, which are respectively configured as an upper heat exchange coil, a middle heat exchange coil and a lower heat exchange coil.

[0015] Preferably, the bottom of the vessel body is also fixedly connected to a support leg, and the vessel lid is provided with a handle for easy rotation.

[0016] This utility model has the following beneficial effects: In this invention, multiple parallel heat exchange coils arranged vertically and independently controllable by their respective valves are set up. This solves the problem in the prior art where a single heat exchange coil causes a significant temperature drop when the heat exchange medium flows from top to bottom, resulting in uneven heat exchange between the upper and lower layers of materials in the reactor. This achieves the effect of ensuring uniform and consistent heat exchange effect for each layer of materials in the reactor, thereby improving heat exchange quality and reaction efficiency.

[0017] In this invention, an installation mechanism that can slide out along the guide rail on the inner wall of the reactor body is provided. A partial quick-release structure consisting of a hinge support, an arc-shaped buckle plate, and bolts is used on this mechanism to fix individual heat exchange coils. This solves the problem that the existing built-in heat exchangers are difficult to clean, inspect, and replace due to their fixed structure and strong integrity, resulting in high maintenance costs. This invention achieves the effect of allowing the entire heat exchange device to be easily removed from the reactor body and enabling quick and independent disassembly and assembly of partially damaged coils, greatly simplifying the maintenance process and reducing replacement costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a heat exchange device for a reaction vessel unit proposed in this utility model; Figure 2 This is a schematic diagram of the vessel body structure of a heat exchange device for a reaction vessel unit proposed in this utility model; Figure 3 This is a schematic diagram of the heat exchange coil part of a heat exchange device for a reactor unit proposed in this utility model; Figure 4 This is a schematic diagram of the mounting frame structure of a heat exchange device for a reaction vessel unit proposed in this utility model; Figure 5 For this Figure 4 Enlarged diagram of point A in the diagram.

[0019] Legend: 1. Reactor body; 101. Reactor body; 102. Support leg; 103. Reactor cover; 104. Handle; 105. External threaded ring; 106. Internal threaded ring; 107. Guide rail; 2. Mounting mechanism; 201. Top plate; 202. Slide rod; 203. Bottom plate; 204. Hinge support; 205. Arc-shaped buckle plate; 206. Bolt; 3. Heat exchange mechanism; 301. Medium inlet; 302. Inlet four-way valve; 303. Inlet branch pipe; 304. First valve; 305. First flange; 306. Second flange; 307. Outlet branch pipe; 308. Second valve; 309. Outlet four-way valve; 310. Medium outlet; 311. Heat exchange coil. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 5 This utility model provides a heat exchange device for a reactor unit, which aims to solve the problems of uneven heat exchange effect, energy waste, and difficulty in maintenance and replacement caused by the integral structure in the existing reactor heat exchange devices.

[0022] like Figure 1 and Figure 2 As shown, a heat exchange device for a reactor unit is designed to be detachably installed inside a reactor body 1. The heat exchange device includes a mounting mechanism 2 and a heat exchange mechanism 3 that is detachably fixed to the mounting mechanism 2. The heat exchange mechanism 3 includes a medium inlet 301, a medium outlet 310, and three heat exchange coils 311 arranged at intervals in the vertical direction.

[0023] Specifically, refer to Figure 2 , Figure 4 and Figure 5 The installation mechanism 2 includes a top plate 201, a bottom plate 203, and multiple sliding rods 202 for connecting the top plate 201 and the bottom plate 203. The top plate 201 constitutes a fixed part, and the sliding rods 202 constitute a sliding part. The heat exchange coil 311 is detachably fixed to the sliding rods 202. The reactor body 1 includes a reactor body 101 and a reactor cover 103. Multiple guide rails 107 extending along its height direction are fixedly connected to the inner wall of the reactor body 101. The sliding rods 202 of the installation mechanism 2 are connected to the guide rails 107. The sliding fit allows the entire heat exchange device to slide into or out of the vessel body 101 along the guide rail 107; an internal threaded ring 106 is provided on the inner wall of the opening of the vessel body 101, and an external threaded ring 105 is provided at the lower end of the vessel cover 103. A handle 104 is also fixedly connected to the vessel cover 103. After the top plate 201 of the mounting mechanism 2 is installed in place, it is suitable to be clamped and fixed by the internal threaded ring 106 and the tightened external threaded ring 105; a support leg 102 for support is also fixedly connected to the bottom of the vessel body 101.

[0024] Please refer to Figure 4 and Figure 5A hinge support 204 is fixedly connected to the slide rod 202, and an arc-shaped buckle plate 205 is rotatably connected to the hinge support 204. The inner surface shape of the arc-shaped buckle plate 205 is adapted to the outer surface shape of the heat exchange coil 311. The free end of the arc-shaped buckle plate 205 is detachably fixed to the slide rod 202 by bolts 206, thereby holding and fixing the heat exchange coil 311.

[0025] Please refer to Figure 3 The heat exchange mechanism 3 also includes an inlet four-way valve 302 and an outlet four-way valve 309. The medium inlet 301 is connected to the inlet four-way valve 302. The inlet four-way valve 302 branches into three paths and is connected to three inlet branch pipes 303 respectively. Each inlet branch pipe 303 is equipped with a first valve 304. Similarly, the three outlet branch pipes 307 converge and are connected to the outlet four-way valve 309. The outlet four-way valve 309 is connected to the medium outlet 310. Each outlet branch pipe 307 is equipped with a second valve 308. The end of each inlet branch pipe 303 is detachably connected to the inlet end of the corresponding heat exchange coil 311 through a first flange 305. The front end of each outlet branch pipe 307 is detachably connected to the outlet end of the corresponding heat exchange coil 311 through a second flange 306.

[0026] The mounting mechanism 2 specifically includes a top plate 201, a bottom plate 203, and a slide rod 202 connecting the top plate 201 and the bottom plate 203. The structure of the top plate 201 is suitable for being clamped and fixed, and the slide rod 202 is suitable for sliding along the guide rail 107. To achieve quick assembly and disassembly of the heat exchange coil 311, a hinge support 204 is fixedly connected to the slide rod 202, and an arc-shaped buckle plate 205 is rotatably connected to the hinge support 204. By locking the arc-shaped buckle plate 205 with a bolt 206, the heat exchange coil 311 can be securely fixed to the mounting mechanism 2.

[0027] To facilitate pipeline connection and maintenance, the inlet branch pipe 303 and the inlet end of the heat exchange coil 311 are detachably connected through a first flange 305, and the outlet branch pipe 307 and the outlet end of the heat exchange coil 311 are detachably connected through a second flange 306.

[0028] To achieve uniform distribution and collection of fluid, multiple inlet pipes 303 of the heat exchange mechanism 3 are collected and connected to an inlet four-way valve 302, and multiple outlet pipes 307 are collected and connected to an outlet four-way valve 309.

[0029] In this embodiment, there are three heat exchange coils 311, which are respectively arranged in the upper, middle and lower layers of the vessel body (101) to meet the heat exchange requirements of different material filling amounts.

[0030] The reactor body 1 is used to contain the reactants and is mainly composed of a vessel body 101. Support legs 102 are fixedly connected to the bottom of the vessel body 101 to support the entire reactor body 1. A vessel lid 103 seals the opening of the vessel body 101. A handle 104 fixed to the lid 103 assists the operator in applying torque to tighten or loosen the lid 103. An external threaded ring 105 located at the lower end of the lid 103 is threadedly engaged with an internal threaded ring 106 fixed to the inner wall of the opening of the vessel body 101 to lock the lid 103 onto the vessel body 101 and simultaneously clamp the top plate 201 of the mounting mechanism 2. A guide rail 107 located on the inner wall of the vessel body 101 guides the mounting mechanism 2 in and out. The mounting mechanism 2 acts as a frame to support the heat exchange mechanism 3. Its top plate 201 is clamped, and its bottom plate 203 provides structural support. A sliding rod 202 connecting the two is engaged with the guide rail 107. The sliding mechanism 3 achieves the sliding motion; the hinge support 204 fixed on the slide rod 202 provides a rotation fulcrum for the arc-shaped buckle plate 205, which is used to hold the heat exchange coil 311 tightly, and the bolt 206 is used to lock the arc-shaped buckle plate 205; the heat exchange mechanism 3 is used to exchange heat with the material in the vessel body 101, wherein the heat exchange medium enters through the medium inlet 301, is distributed to each inlet branch pipe 303 through the inlet four-way 302, the first valve 304 is used to control or start / stop the medium flow of the corresponding branch, the first flange 305 and the second flange 306 are respectively used to detachably connect the inlet and outlet of the heat exchange coil 311 to the pipeline system, the heat exchange coil 311 is the core component for heat exchange, the medium that has completed heat exchange flows out through the outlet branch pipe 307, the second valve 308 is used for secondary flow regulation, and the medium is finally collected through the outlet four-way 309 and discharged through the medium outlet 310.

[0031] Working principle: The number of heat exchange coils 311 to be operated is determined according to the amount of material filling in the vessel body 101. If the material filling is sufficient, the first valve 304 and the second valve 308 of the corresponding upper, middle and lower heat exchange coils 311 are opened simultaneously. If the material filling is not full, only the first valve 304 and the second valve 308 of the heat exchange coils 311 below the material level are opened. Subsequently, the heat exchange medium is introduced from the medium inlet 301, and is evenly distributed to each open inlet branch pipe 303 through the inlet four-way 302. After the flow rate is regulated by the first valve 304, it enters the corresponding heat exchange coil 311 and exchanges heat with the material in the vessel body 101. After the heat exchange is completed, the medium flows out from the outlet end of each heat exchange coil 311, enters the outlet branch pipe 307 through the second flange 306, and is collected to the outlet four-way 309 after secondary regulation by the second valve 308. Finally, it is discharged from the medium outlet 310, completing a single heat exchange cycle.

[0032] The installation and maintenance process is as follows: When cleaning or replacing the heat exchanger is required, first rotate the handle 104 on the vessel cover 103 in the reverse direction to loosen the external threaded ring 105 on the internal threaded ring 106, thereby releasing the clamping fixation on the top plate 201 of the installation mechanism 2; then, slide the entire installation mechanism 2 and the heat exchange mechanism 3 out of the reactor body 1 together through the guide rail 107 on the inner wall of the vessel body 101 via the slide rod 202; if a damaged heat exchange coil 311 needs to be replaced, simply unscrew the corresponding bolt 206 to allow the arc-shaped buckle plate 205 to rotate around its hinge support 204 and open, thus removing the target heat exchange coil. The heat exchange coil 311 can be removed separately, and the first flange 305 and the second flange 306 at both ends can be disconnected. After cleaning or replacement, the new or cleaned heat exchange coil 311 is put back in its original position and re-fixed with the arc-shaped buckle plate 205 and bolts 206. It is then connected to the pipeline through the first flange 305 and the second flange 306. Finally, the entire device is pushed into the vessel body 101 along the guide rail 107 until the top plate 201 abuts against the positioning. Then, the vessel cover 103 is rotated forward to tighten the external threaded ring 105 and the internal threaded ring 106, thus completing the positioning and installation of the installation mechanism 2.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat exchange device for a reactor unit, comprising a reactor body (1), an installation mechanism (2) disposed within the reactor body (1), and a heat exchange mechanism (3) mounted on the installation mechanism (2), wherein the heat exchange mechanism (3) includes a medium inlet (301), a medium outlet (310), and at least two heat exchange coils (311) arranged vertically; characterized in that, The mounting mechanism (2) includes a sliding part that is adapted to slide against a guide rail (107) on the inner wall of the reactor body (1), and a fixing part that is adapted to be clamped and fixed at the opening of the reactor body (1). One end of each heat exchange coil (311) is connected to the medium inlet (301) through its respective inlet branch pipe (303) and first valve (304), and the other end is connected to the medium outlet (310) through its respective outlet branch pipe (307) and second valve (308).

2. The heat exchange device for a reactor unit according to claim 1, characterized in that: The mounting mechanism (2) includes a top plate (201), a bottom plate (203), and a sliding rod (202) connecting the top plate (201) and the bottom plate (203); the top plate (201) constitutes the fixed part, and the sliding rod (202) constitutes the sliding part.

3. The heat exchange device for a reactor unit according to claim 2, characterized in that: The slide bar (202) is provided with a hinge support (204), and an arc-shaped buckle plate (205) is rotatably connected to the hinge support (204). The arc-shaped buckle plate (205) is provided with a bolt (206) for locking. The arc-shaped buckle plate (205) is suitable for clamping and fixing the heat exchange coil (311).

4. The heat exchange device for a reactor unit according to claim 2, characterized in that: The inlet branch pipe (303) is detachably connected to the inlet end of the heat exchange coil (311) via a first flange (305), and the outlet branch pipe (307) is detachably connected to the outlet end of the heat exchange coil (311) via a second flange (306).

5. A heat exchange device for a reactor unit according to claim 2, characterized in that: The top plate (201) is a flat plate structure, which is designed to be clamped together by the internal threaded ring (106) of the reactor body (1) and the external threaded ring (105) on the reactor cover (103).

6. A heat exchange device for a reactor unit according to claim 1, characterized in that: The heat exchange mechanism (3) further includes an inlet four-way (302) and an outlet four-way (309); multiple inlet branches (303) converge and connect to the inlet four-way (302), and multiple outlet branches (307) converge and connect to the outlet four-way (309).

7. A heat exchange device for a reactor unit according to claim 5, characterized in that: The number of heat exchange coils (311) is three, which are respectively arranged in the upper, middle and lower layers of the vessel body (101).

8. A heat exchange device for a reactor unit according to claim 7, characterized in that: The bottom of the vessel body (101) is also fixedly connected to a support leg (102), and the vessel lid (103) is provided with a handle (104) for easy rotation.

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