Multi-stage reaction kettle heat exchange system

Abstract

The utility model belongs to the technical field of reaction instruments, and particularly relates to a multistage reaction kettle heat exchange system which comprises a heat exchange assembly, a plurality of reaction kettles connected with the heat exchange assembly in parallel, a plurality of input pipeline pieces and a plurality of output pipeline pieces. The output port of each reaction kettle is connected with the input end of the heat exchange assembly through a corresponding input pipeline piece; the input port of each reaction kettle is connected with the output end of the heat exchange assembly through a corresponding output pipeline piece; and control valves are arranged on each input pipeline piece and each output pipeline piece. By arranging the plurality of reaction kettles connected with the heat exchange assembly in parallel, each reaction kettle and the heat exchange assembly form a closed circulation loop through the input pipeline piece and the output pipeline piece, and by opening or closing the control valves, reaction materials in each reaction kettle enter the heat exchange assembly one by one for heat exchange and then are circulated back to the reaction kettles, so that the heat exchange efficiency is improved; and meanwhile, the heat exchange assembly does not need to be started and stopped repeatedly in the production process, and the heat exchange effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of reaction equipment technology, and in particular relates to a multi-stage reaction vessel heat exchange system. Background Technology

[0002] In numerous industries such as chemical, pharmaceutical, and food processing, reaction vessels are common reaction equipment. The choice of heat transfer method directly affects the accuracy and stability of temperature control within the reaction vessel, thus influencing the reaction efficiency, product quality, and production costs. There are various heat exchange methods for reaction vessels, mainly including jacketed heat exchangers, coil heat exchangers, shell-and-tube heat exchangers, and external heat exchangers. External heat exchangers involve a circulating pump extracting the reactants from the reaction vessel, exchanging heat through an external heat exchanger, and then circulating them back into the reaction vessel. This method allows for rapid external heat exchange of the reactants, resulting in high heat exchange efficiency and precise temperature control, making the entire reaction process safer. However, this method requires a large area and has high equipment costs, especially for large-scale applications. During production, if multiple reaction vessels need to be rapidly heated simultaneously, taking steam-heated heat exchangers as an example, to meet production demands, manufacturers need to equip themselves with large-tonnage boilers and large-diameter pipelines to generate the large amount of steam required by the heat exchangers. This results in high equipment investment costs and difficult construction. Furthermore, since boilers are special pressure equipment, they require certain self-control and safety protection. However, heat exchange of reaction materials is intermittent, which means that boilers need to be repeatedly started and stopped to input steam to the heat exchangers, making the equipment prone to damage. Moreover, the heat exchange effect is not ideal after the steam temperature drops.

[0003] Therefore, there is an urgent need to design a multi-stage reactor heat exchange system that can meet the needs of multiple reactors for efficient heat exchange while having low equipment investment costs. Utility Model Content

[0004] To overcome the problems existing in the background technology, this utility model provides a multi-stage reactor heat exchange system, including a heat exchange component, multiple reactors arranged in parallel with the heat exchange component, and multiple input pipes and output pipes equal in number to the multiple reactors, wherein: the output port of each reactor is connected to the input end of the heat exchange component through a corresponding input pipe; the input port of each reactor is connected to the output end of the heat exchange component through a corresponding output pipe.

[0005] Each input pipe and each output pipe is equipped with a control valve. By opening or closing the corresponding control valve, the heat exchange assembly can exchange heat with multiple reactors one by one.

[0006] Furthermore, the multi-stage reactor heat exchange system also includes a heat exchanger connector, which has multiple pipe interfaces and a heat exchange component connection port. The heat exchange component connection port is connected to the output end of the heat exchange component. The multiple pipe interfaces are respectively connected to one end of the corresponding multiple output pipe components.

[0007] Furthermore, the control valves on the output pipeline include a first outlet valve and a second outlet valve, which are respectively located at both ends of the output pipeline.

[0008] Furthermore, both the first and second outlet valves are intelligent electric control valves that are electrically connected to an external control system.

[0009] Furthermore, the multi-stage reactor heat exchange system also includes a confluence pipe assembly and a confluence output pipe assembly. The confluence pipe assembly has a confluence output interface and multiple confluence input interfaces. One end of the confluence output pipe assembly is connected to the confluence output interface, and the other end of the confluence output pipe assembly is connected to the input end of the heat exchange component. The multiple confluence input interfaces are respectively connected to one end of the corresponding multiple input pipe assemblies.

[0010] Furthermore, the merging pipe fitting is arranged in a ring shape, with multiple merging input interfaces evenly distributed circumferentially on the merging pipe fitting.

[0011] Furthermore, a circulation pump is installed between the input end of the heat exchange component and the confluence output piping.

[0012] Furthermore, the control valves on the input piping component include a first inlet valve, a second inlet valve, and a third inlet valve. The first inlet valve is provided between the input piping component and the merging piping component, the second inlet valve is provided between the merging output piping component and the circulating pump, and the third inlet valve is provided between the circulating pump and the input end of the heat exchange assembly.

[0013] Furthermore, the first inlet valve, the second inlet valve, and the third inlet valve are all intelligent electric control valves that are electrically connected to an external control system.

[0014] Furthermore, the heat exchange assembly includes multiple heat exchangers, which are connected in parallel or in series.

[0015] Compared with the prior art, the multi-stage reactor heat exchange system of this utility model has the following advantages:

[0016] This application sets up multiple reactors connected in parallel with the heat exchange assembly, so that each reactor forms a closed loop with the heat exchange assembly through input and output pipes. By opening or closing control valves, the reactants in each reactor are sequentially introduced into the heat exchange assembly for heat exchange and then circulated back to the reactor, which improves heat exchange efficiency. Moreover, the heat load of the heat exchange assembly only needs to meet the maximum heat exchange demand of the reactor, reducing the equipment investment cost. At the same time, the heat exchange assembly is always in operation during the production process, avoiding repeated start-ups and shutdowns, resulting in good heat exchange effect and a long service life of the equipment. It is worth promoting and using. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of this utility model, showing three reaction vessels and heat exchange components connected in parallel;

[0019] Figure 2 A schematic diagram of the overall structure of this utility model, showing six reaction vessels and heat exchange components connected in parallel;

[0020] Figure 3 A schematic diagram of the overall structure of this utility model, showing nine reaction vessels and heat exchange components connected in parallel;

[0021] Figure 4 This is a schematic diagram of the structure of the heat exchange assembly of this utility model in which multiple heat exchangers are connected in parallel;

[0022] Figure 5 This is a schematic diagram of the structure of the heat exchange assembly of this utility model in which multiple heat exchangers are connected in series;

[0023] Wherein: 1-Heat exchange component, 11-Heat exchanger, 2-Reaction vessel, 3-Input piping, 4-Output piping, 5-Control valve, 51-First outlet valve, 52-Second outlet valve, 53-First inlet valve, 54-Second inlet valve, 55-Third inlet valve, 6-Heat exchanger connector, 61-Pipe interface, 62-Heat exchange component connector, 7-Merging piping, 71-Merging output interface, 72-Merging input interface, 8-Merging output piping, 9-Circulating pump. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] The following is combined with Figures 1 to 5 The present invention will be described in detail with specific embodiments.

[0026] This utility model provides a multi-stage reactor heat exchange system, including a heat exchange component 1, multiple reactors 2 arranged in parallel with the heat exchange component 1, and multiple input pipe fittings 3 and output pipe fittings 4 equal in number to the multiple reactors 2, wherein: the output port of each reactor 2 is connected to the input end of the heat exchange component 1 through a corresponding input pipe fitting 3; and the input port of each reactor 2 is connected to the output end of the heat exchange component 1 through a corresponding output pipe fitting 4.

[0027] Each input pipe component 3 and each output pipe component 4 is equipped with a control valve 5. By opening or closing the corresponding control valve 5, the heat exchange component 1 can exchange heat with multiple reactors 2 one by one.

[0028] In this invention, the number of reaction vessels 2 is at least two or more, but this is not limited. The accompanying drawings illustrate examples of three, six, and nine reaction vessels 2 connected in parallel with the heat exchange assembly 1. The heating method for the heat exchange assembly 1 can be electric heating, thermal oil heating, or steam heating, etc., without limitation, as long as it can achieve heat exchange for the reactants flowing out of the reaction vessels 2. In this embodiment, to effectively utilize workshop space and save equipment area, multiple reaction vessels 2 are evenly distributed around the vertical axis of the heat exchange assembly 1, forming a closed loop with the heat exchange assembly 1 via input pipe 3 and output pipe 4. In this embodiment, taking the heating of the reactants inside the reaction vessels as an example, the heating method for the heat exchange assembly 1 is steam heating. A matching boiler is connected externally to the heat exchange assembly 1, and the large amount of steam generated by the boiler is used as the heat exchange medium to exchange heat with the reactants inside the heat exchange tubes of the heat exchange assembly 1. In actual use, the control valves 5 on the input pipe 3 and output pipe 4 are initially closed. The operator only needs to open one of the control valves 5 on the input pipe 3 and output pipe 4 connected to the reactor 2 to achieve heat exchange of the reactants in the reactor. After the heat exchange of the reactants in the reactor 2 is completed, the control valves 5 on the input pipe 3 and output pipe 4 connected to this reactor are closed, and the control valves 5 on the input pipe 3 and output pipe 4 connected to another reactor 2 are opened to achieve heat exchange of the reactants in the other reactor 2. The above operation is repeated to complete the heat exchange operation of the reactants in multiple reactors 2 one by one. This application sets up multiple reactors 2 connected in parallel with the heat exchange component 1, so that each reactor 2 forms a closed loop with the heat exchange component 1 through input pipe fittings 3 and output pipe fittings 4. By opening or closing control valves 5, the reactants in each reactor 2 are allowed to enter the heat exchange component 1 one by one for heat exchange and then circulate back to the reactor 2, which improves the heat exchange efficiency. Moreover, the amount of steam supplied to the heat exchange component 1 by the external boiler only needs to meet the maximum steam consumption of a single reactor 2, which reduces the equipment investment cost. At the same time, the heat exchange component 1 is always in working condition during the production process, avoiding repeated start-ups and shutdowns. The boiler can supply steam to the heat exchange component 1 normally, stably and continuously. The equipment is not easily damaged, has good heat exchange effect, and long service life, which is worthy of promotion and use.

[0029] For details, please refer to Figures 1-3The multi-stage reactor heat exchange system also includes a heat exchanger connector 6, which has multiple pipe interfaces 61 and a heat exchange component connection port 62. The heat exchange component connection port 62 is connected to the output end of the heat exchange component 1. One end of each of the multiple output pipe components 4 is connected to the corresponding multiple pipe interfaces 61, and the other end is connected to the corresponding input port of the reactor 2. In this embodiment, the heat exchanger connector 6 is a hollow sphere. The multiple pipe interfaces 61 are evenly distributed on the outer surface of the sphere, and the heat exchange component connection port 62 is located on the lower surface of the sphere to facilitate connection with the heat exchange component 1. In this embodiment, by setting multiple pipe interfaces 61 on the heat exchanger connector 6, the multiple output pipe components 4 are connected to the heat exchange component 1, so that the reactant flowing out of the reactor 2 is heated by the heat exchange component 1 and then circulated back into the reactor 2 through the output pipe components 4 connected to the pipe interfaces 61 on the heat exchanger connector 6.

[0030] For details, please refer to Figures 1-3 In this embodiment, the control valves on the output pipe fitting 4 include a first outlet valve 51 and a second outlet valve 52. The first outlet valve 51 and the second outlet valve 52 are respectively located at both ends of the output pipe fitting 4. The first outlet valve 51 is located at the end near the inlet of the reactor 2. The first outlet valve 51 is a frequently operated valve and needs to be frequently opened or closed to control whether the reactant flows in. The second outlet valve 52 is located at the end near the heat exchanger connection 6. The second outlet valve 52 is a normally open valve. In actual production, when a leak is found in the first outlet valve 51, the second outlet valve 52 can be closed and the first outlet valve 51 can be replaced, which is convenient for disassembly and maintenance.

[0031] For details, please refer to Figures 1-3 In this embodiment, both the first outlet valve 51 and the second outlet valve 52 are intelligent electric control valves that are electrically connected to an external control system. The intelligent electric control valves can be used to control the opening or closing of the valves through a preset program, thereby achieving remote control and automated operation.

[0032] For details, please refer to Figures 1-3 The multi-stage reactor heat exchange system also includes a converging pipe component 7 and a converging output pipe component 8. The converging pipe component 7 has a converging output interface 71 and multiple converging input interfaces 72. One end of the converging output pipe component 8 is connected to the converging output interface 71, and the other end of the converging output pipe component 8 is connected to the input end of the heat exchange component 1. One end of the multiple input pipe components 3 is connected to the corresponding multiple converging input interfaces 72, and the other end of the multiple input pipe components 3 is connected to the output port of the reactor 2.

[0033] For details, please refer to Figures 1-3In this embodiment, the converging pipe component 7 is arranged in a ring shape, but it can also be a regular polygon; there is no limitation here. Multiple converging input interfaces 72 are evenly distributed around the converging pipe component 7. In this embodiment, by setting up the converging pipe component 7, multiple output pipe components 3 connected to the output port of the reactor 2 are collectively connected to the converging pipe component 7, and then the reaction material flowing in from the converging pipe component 7 is transported to the heat exchange pipe of the heat exchange assembly 1 for heat exchange through the converging output pipe component 8.

[0034] For details, please refer to Figures 1-3 In this embodiment, a circulation pump 9 is provided between the input end of the heat exchange component 1 and the confluence output pipe component 8. The suction port of the circulation pump 9 is connected to one end of the confluence output pipe component 8, and the suction port of the circulation pump 9 is connected to the input end of the heat exchange component 1. By setting the circulation pump 9, the reaction material flowing out of the output port of the reactor 2 can be extracted and then transported to the heat exchange component 1 for heat exchange, and then circulated back into the reactor 2, so as to realize the repeated heat exchange of the reaction material in the reactor 2.

[0035] For details, please refer to Figures 1-3 In this embodiment, the control valves on the input pipe component 3 include a first inlet valve 53, a second inlet valve 54, and a third inlet valve 55. The first inlet valve 53 is located between the input pipe component 3 and the merging pipe component 7. The second inlet valve 54 is located between the merging output pipe component 8 and the circulating pump 9. The third inlet valve 55 is located between the circulating pump 9 and the input end of the heat exchange assembly 1. The first inlet valve 53 is located near the output port of the reactor 2 and is a frequently operated valve, requiring frequent opening and closing to control the outflow of reactants. The third inlet valve 55 is located near the input end of the heat exchange assembly 1. Both the second and third inlet valves 55 are normally open valves. In actual production, if leakage is detected in the first inlet valve 53, the second inlet valve 54 is closed, and the first inlet valve 53 is replaced. If an abnormality occurs during the operation of the circulating pump 9, the second inlet valve 54 and the third inlet valve 55 are closed to cut off the fluid passage, and the circulating pump 9 is replaced.

[0036] For details, please refer to Figures 1-3 In this embodiment, the first inlet valve 53, the second inlet valve 54, and the third inlet valve 55 are all intelligent electric control valves electrically connected to an external control system. Using intelligent electric control valves allows for remote control and automated operation by controlling the opening and closing of the valves through a preset program.

[0037] Specifically, in this embodiment, the heat exchange assembly 1 includes multiple heat exchangers 11, which are connected in parallel or in series. (See also...) Figure 4In this embodiment, three heat exchangers 11 are connected in parallel to form a heat exchange assembly 1, and two reaction vessels 2 are connected in parallel with the heat exchange assembly 1. When multiple heat exchangers 11 are connected in parallel, the reactant flowing out of the reaction vessel 2 is divided into multiple portions, which enter the multiple parallel heat exchangers 11 for heat exchange, and then circulate back into the reaction vessel 2. This effectively improves the heat exchange rate of the reactant, thereby improving the reaction efficiency of the entire heat exchange system. The number of heat exchangers 11 connected in parallel is determined based on the heat exchange rate. (See reference...) Figure 5 In this embodiment, three heat exchangers 11 are connected in series to form a heat exchange component 1, and two reaction vessels 2 are connected in parallel with the heat exchange component 1. When a single heat exchanger 11 cannot meet the heat exchange requirements, multiple heat exchangers 11 can be connected in series. The reaction material flowing out of the reaction vessel 2 passes through multiple heat exchangers 11 in sequence for heat exchange and then circulates back into the reaction vessel 2, thereby achieving superimposed heat exchange of the reaction material to meet production needs.

[0038] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A multi-stage reactor heat exchange system, characterized in that, It includes a heat exchange assembly (1), a plurality of reactors (2) connected in parallel with the heat exchange assembly (1), and a plurality of input pipe fittings (3) and output pipe fittings (4) equal in number to the plurality of reactors (2), wherein: The output port of each of the reactors (2) is connected to the input end of the heat exchange assembly (1) through the corresponding input pipe fitting (3); the input port of each of the reactors (2) is connected to the output end of the heat exchange assembly (1) through the corresponding output pipe fitting (4); Each of the input pipe components (3) and each of the output pipe components (4) is provided with a control valve (5). By opening or closing the corresponding control valve (5), the heat exchange assembly (1) can exchange heat with each of the multiple reactors (2) one by one.

2. The multi-stage reactor heat exchange system according to claim 1, characterized in that, It also includes a heat exchanger connector (6), which has multiple pipe interfaces (61) and a heat exchange component connection port (62), which is connected to the output end of the heat exchange component (1); the multiple pipe interfaces (61) are respectively connected to one end of the corresponding multiple output pipe components (4).

3. The multi-stage reactor heat exchange system according to claim 2, characterized in that, The control valve (5) on the output pipe fitting (4) includes a first outlet valve (51) and a second outlet valve (52), which are respectively disposed at both ends of the output pipe fitting (4).

4. The multi-stage reactor heat exchange system according to claim 3, characterized in that, Both the first outlet valve (51) and the second outlet valve (52) are intelligent electric control valves that are electrically connected to an external control system.

5. The multi-stage reactor heat exchange system according to claim 2, characterized in that, It also includes a confluence pipe fitting (7) and a confluence output pipe fitting (8). The confluence pipe fitting (7) has a confluence output interface (71) and a plurality of confluence input interfaces (72). One end of the confluence output pipe fitting (8) is connected to the confluence output interface (71), and the other end of the confluence output pipe fitting (8) is connected to the input end of the heat exchange assembly (1). The plurality of confluence input interfaces (72) are respectively connected to one end of the corresponding plurality of input pipe fittings (3).

6. The multi-stage reactor heat exchange system according to claim 5, characterized in that, The merging pipe component (7) is arranged in a ring shape, and multiple merging input interfaces (72) are evenly distributed circumferentially on the merging pipe component (7).

7. The multi-stage reactor heat exchange system according to claim 5, characterized in that, A circulation pump (9) is provided between the input end of the heat exchange component (1) and the confluence output pipe component (8).

8. The multi-stage reactor heat exchange system according to claim 7, characterized in that, The control valve (5) on the input pipe fitting (3) includes a first inlet valve (53), a second inlet valve (54) and a third inlet valve (55). The first inlet valve (53) is provided between the input pipe fitting (3) and the merging pipe fitting (7). The second inlet valve (54) is provided between the merging output pipe fitting (8) and the circulating pump (9). The third inlet valve (55) is provided between the circulating pump (9) and the input end of the heat exchange assembly (1).

9. The multi-stage reactor heat exchange system according to claim 8, characterized in that, The first inlet valve (53), the second inlet valve (54), and the third inlet valve (55) are all intelligent electric control valves that are electrically connected to an external control system.

10. The multi-stage reactor heat exchange system according to claim 1, characterized in that, The heat exchange assembly (1) includes multiple heat exchangers (11), which are connected in parallel or in series.

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