AMPS production feed reaction kettle

Abstract

AMPS production feed reaction kettle relates to reaction device technical field, including kettle body, the inner wall of kettle body is fixed with a plurality of layers of high heat exchange plates from top to bottom, each layer of high heat exchange plate is provided with a plurality of around, high heat exchange channel that is arranged in S shape is arranged in high heat exchange plate, the high heat exchange channels of different layers are independently set up and off.The utility model solves the problem that the reaction kettle in traditional technology is added material constantly, along with the stirring of internal stirring structure, along with the continuous feeding, the material in the bottom layer will react first, and the exothermic reaction will be produced, limited by the limitation of existing heat exchange structure, the heat exchange cannot be carried out according to the exothermic reaction sequence of different layer height, so as to cause the problem that the energy consumption output is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to reaction device technical field, concretely relates to the feeding reaction kettle for AMPS production. BACKGROUND

[0002] The feeding reaction kettle for AMPS (2 - acrylamido - 2 - methylpropane sulfonic acid) production plays a key role in the production process of AMPS, and its design, operation and maintenance directly affect the quality, yield and safety and stability of production.

[0003] Domestic AMPS production mostly uses oleum, acrylonitrile and isobutylene as raw materials, and adopts one-step or two-step method for preparation. In this process, the feeding reaction kettle is the place where the initial reaction occurs. Taking the one-step method as an example, acrylonitrile, oleum and isobutylene are mixed and reacted in the feeding reaction kettle. The reaction kettle must ensure that the raw materials are fully mixed to provide good conditions for subsequent reactions, and the control of parameters such as temperature, pressure and material residence time inside the reaction kettle has a major impact on the reaction process and product quality.

[0004] A patent with publication number CN117282383A is disclosed in the prior art, which includes a nitrogen tank for purging the entire system, a feed tank for storing isobutylene, acrylonitrile and oleum respectively, a tubular reactor group connected with the feed tank and provided with a plurality of spiral arc fillings, a reaction liquid buffer tank connected with the tubular reactor group and storing reaction liquid, a vacuum centrifugal solid-liquid separator connected with the reaction liquid buffer tank and centrifuging the reaction liquid, a rake dryer connected with the vacuum centrifugal solid-liquid separator and drying the solid phase into finished product, a liquid phase separation buffer tank connected with the vacuum centrifugal solid-liquid separator and storing liquid phase, a scraper film evaporator connected with the liquid phase separation buffer tank and evaporating the liquid phase to condense acrylonitrile, and a refrigerator connected with the feed tank and tubular reactor and manufacturing refrigerant, which has the advantage of improving the positive reaction efficiency.

[0005] The existing devices including the above patent gradually expose the deficiencies of the prior art with use, mainly in the following aspects:

[0006] First, when the reaction kettle is continuously adding materials, with the stirring of the internal stirring structure, with the continuous feeding, the materials at the bottom will react first, and exothermic reaction will occur. Limited by the existing heat exchange structure, heat exchange cannot be carried out according to the exothermic reaction sequence of different layer heights, resulting in increased energy consumption output.

[0007] Second, the existing heat exchange structure is through the external setting jacket or internal setting coil, due to the presence of stirring structure, cannot be uniform with the internal material heat exchange contact, so as to prolong the stirring time, in order to improve the heat exchange efficiency, and further increase the output of energy consumption.

[0008] In summary, the prior art in practical use obviously exists inconvenience and defects, so it is necessary to improve. Practical new type content

[0009] In view of the defects in the prior art, the AMPS production feeding reaction kettle provided by the present application solves the problem that in the traditional technology, when the material is continuously added, the internal stirring structure is stirred, the material at the bottom layer is reacted first, and the heat release reaction is generated. Limited by the existing heat exchange structure, heat exchange cannot be carried out according to the heat release reaction sequence of different layer heights, which increases the output of energy consumption.

[0010] In order to achieve the above purpose, the present application provides the following technical scheme:

[0011] The AMPS production feeding reaction kettle comprises a kettle body, a plurality of layer height heat exchange plates are fixed on the inner wall of the kettle body from top to bottom, a plurality of layer height heat exchange plates are circumferentially arranged on each layer, a layer height heat exchange channel in the form of S is arranged in the layer height heat exchange plate, and the layer height heat exchange channels of different layers are independently connected,

[0012] A rotating column is arranged in the kettle body, a plurality of stirring heat exchange plates are fixed on the rotating column from top to bottom, a plurality of stirring heat exchange plates are circumferentially arranged on each layer, a stirring heat exchange channel in the form of S is arranged in the stirring heat exchange plate, and the stirring heat exchange channels of different layers are connected.

[0013] As an optimized scheme, a liquid inlet cavity shell is fixed on the outer wall of the kettle body corresponding to each layer height heat exchange plate, the liquid inlet cavity shell is connected with the inlet end of the layer height heat exchange channel, a heat exchange medium inlet pipeline is arranged outside the kettle body, and the heat exchange medium inlet pipeline is connected with the inner cavity of the liquid inlet cavity shell through a liquid inlet pipe.

[0014] As an optimized scheme, a liquid inlet pipe is connected with a on-off valve.

[0015] As an optimized scheme, a liquid outlet cavity shell is fixed on the outer wall of the kettle body corresponding to each layer height heat exchange plate, the liquid outlet cavity shell is connected with the outlet end of the layer height heat exchange channel, a heat exchange medium outlet pipeline is arranged outside the kettle body, and the heat exchange medium outlet pipeline is connected with the inner cavity of the liquid outlet cavity shell through a liquid outlet pipe.

[0016] As an optimization, the lower end of the rotating column is provided with a heat exchange medium inlet channel, and the inlet end of the stirring heat exchange channel in the lowermost layer is communicated with the heat exchange medium inlet channel.

[0017] As an optimization, the rotating column is provided with a heat exchange medium communication channel in the region between the stirring heat exchange channels in adjacent layers, and the inlet end and the outlet end of the stirring heat exchange channels in adjacent layers are connected in series through the heat exchange medium communication channel.

[0018] As an optimization, the upper end of the rotating column is provided with a heat exchange medium outlet channel, and the outlet end of the stirring heat exchange channel in the uppermost layer is communicated with the heat exchange medium outlet channel.

[0019] As an optimization, the top of the kettle body is fixedly connected with a liquid collecting cover, the upper end of the rotating column extends into the liquid collecting cover, and the outer wall of the liquid collecting cover is fixedly connected with a heat exchange medium outlet cylinder communicated with the inner cavity thereof.

[0020] As an optimization, the lower end of the rotating column extends below the kettle body and is rotatably connected with a heat exchange medium inlet cylinder.

[0021] As an optimization, the outer wall of the rotating column is fixedly connected with a gear ring, the lower end of the kettle body is fixedly connected with a driving machine, and the output end of the driving machine is engaged with the gear ring through a gear.

[0022] As an optimization, the side wall of the heat exchange medium inlet pipeline is fixedly connected with a liquid inlet cylinder.

[0023] As an optimization, the lower end of the heat exchange medium outlet pipeline is fixedly connected with a liquid outlet cylinder.

[0024] As an optimization, the height of the liquid outlet cavity shell in the same layer is higher than the height of the liquid inlet cavity shell.

[0025] As an optimization, the top of the kettle body is fixedly connected with a material inlet cylinder communicated with the inner cavity thereof.

[0026] As an optimization, the bottom of the kettle body is fixedly connected with a material outlet cylinder communicated with the inner cavity thereof.

[0027] Compared with the prior art, the utility model has the beneficial effects that:

[0028] By setting heat exchange plates of different heights, the heat exchange channels within these plates can be selectively opened or closed based on the order in which materials are added. This improves reaction efficiency during material mixing and prevents the reaction efficiency of subsequently added materials from being affected by synchronous heat exchange. For example, if the first added material generates heat during mixing, the heat exchange channels at that height will exchange heat normally. However, with monolithic heat exchange, the temperature of subsequently added materials would be lower, thus affecting reaction efficiency. Therefore, implementing tiered heat exchange, which can be opened or closed based on the material addition time, reduces energy consumption.

[0029] By incorporating an S-shaped stirring heat exchange channel within the stirring heat exchange plate, the traditional heat exchange method, such as the heat exchange from the outside to the inside using jackets and heat exchange coils, is overcome. By setting up the stirring heat exchange channel inside, heat exchange can be directly carried out with the material during the stirring process, which can greatly improve heat exchange efficiency, thereby reducing stirring time and energy consumption. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model.

[0032] In the diagram: 1-Bottle body; 2-Layer-height heat exchange plate; 3-Layer-height heat exchange channel; 4-Inlet chamber shell; 5-Heat exchange medium inlet pipe; 6-Inlet pipe; 7-On / off valve; 8-Inlet cylinder; 9-Outlet chamber shell; 10-Outlet pipe; 11-Heat exchange medium outlet pipe; 12-Outlet cylinder; 13-Collection hood; 14-Material inlet cylinder; 15-Heat exchange medium outlet cylinder; 16-Stirring heat exchange plate; 17-Stirring heat exchange channel; 18-Rotating column; 19-Heat exchange medium inlet channel; 20-Heat exchange medium inlet cylinder; 21-Heat exchange medium connecting channel; 22-Heat exchange medium outlet channel; 23-Driver; 24-Material outlet cylinder. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0034] like Figure 1As shown, the feed reactor for AMPS production includes a reactor body 1. Several layers of high-density heat exchange plates 2 are fixedly connected side-by-side from top to bottom on the inner wall of the reactor body 1. Each layer of high-density heat exchange plates 2 has several S-shaped high-density heat exchange channels 3 arranged within it. The high-density heat exchange channels 3 of different layers are independently connected and disconnected.

[0035] Inside the vessel body 1, there is a rotating column 18. Several layers of stirring heat exchange plates 16 are fixedly connected to the rotating column 18 from top to bottom. Each layer of stirring heat exchange plates 16 is surrounded by several stirring heat exchange channels 17 arranged in an S-shape. The stirring heat exchange channels 17 of different layers are connected to each other.

[0036] A liquid inlet shell 4 is fixedly connected to the outer wall of the vessel body 1 corresponding to each layer of heat exchange plate 2. The liquid inlet shell 4 is connected to the inlet end of the layer-height heat exchange channel 3. A heat exchange medium inlet pipe 5 is provided on the outside of the vessel body 1. The heat exchange medium inlet pipe 5 is connected to the inner cavity of the liquid inlet shell 4 through the liquid inlet pipe 6.

[0037] An on / off valve 7 is connected to the inlet pipe 6.

[0038] A liquid outlet shell 9 is fixedly connected to the outer wall of the vessel body 1 corresponding to each layer of heat exchange plate 2. The liquid outlet shell 9 is connected to the outlet end of the layer-height heat exchange channel 3. A heat exchange medium discharge pipe 11 is provided on the outside of the vessel body 1. The heat exchange medium discharge pipe 11 is connected to the inner cavity of the liquid outlet shell 9 through the liquid outlet pipe 10.

[0039] The lower end of the rotating column 18 is provided with a heat exchange medium inlet channel 19, and the inlet end of the stirring heat exchange channel 17 at the bottom layer is connected to the heat exchange medium inlet channel 19.

[0040] The rotating column 18 is provided with a heat exchange medium connecting channel 21 in the area between the adjacent stirring heat exchange channels 17. The inlet and outlet ends of the adjacent stirring heat exchange channels 17 are connected in series through the heat exchange medium connecting channel 21.

[0041] The upper end of the rotating column 18 is provided with a heat exchange medium discharge channel 22, and the outlet end of the uppermost stirring heat exchange channel 17 is connected to the heat exchange medium discharge channel 22.

[0042] A liquid collection hood 13 is fixedly attached to the top of the vessel body 1, and the upper end of the rotating column 18 extends into the liquid collection hood 13. A heat exchange medium discharge cylinder 15 communicating with its inner cavity is fixedly attached to the outer wall of the liquid collection hood 13.

[0043] The lower end of the rotating column 18 extends to the bottom of the vessel body 1 and is rotatably inserted into the heat exchange medium inlet cylinder 20.

[0044] A toothed ring is fixed to the outer wall of the rotating column 18, and a drive motor 23 is fixed to the lower end of the vessel body 1. The output end of the drive motor 23 engages with the toothed ring using gears.

[0045] An inlet cylinder 8 is fixedly attached to the side wall of the heat exchange medium entering the pipe 5.

[0046] A liquid outlet cylinder 12 is fixedly connected to the lower end of the heat exchange medium discharge pipe 11.

[0047] The height of the liquid outlet chamber shell 9, which is on the same layer, is higher than the height of the liquid inlet chamber shell 4.

[0048] The top of the vessel body 1 is fixedly connected to a material inlet cylinder 14 that communicates with its inner cavity.

[0049] The bottom of the vessel body 1 is fixedly connected to a material discharge cylinder 24 that communicates with its inner cavity.

[0050] The rotating column 18 has a through hole that connects its inner cavity to the stirring heat exchange channel 17.

[0051] The outer wall of the vessel body 1 has a through hole that connects the layer-height heat exchange channel 3 with the liquid inlet shell 4 and the liquid outlet shell 9.

[0052] The working principle of this device is as follows:

[0053] By setting heat exchange plates 2 of different heights, the heat exchange channels 3 within the heat exchange plates 2 of different heights can be selectively opened or closed according to the order of material addition. This can improve the reaction efficiency during material mixing and prevent the reaction efficiency of subsequently added materials from being affected by synchronous heat exchange. For example, if the material added first generates heat during mixing, the heat exchange channel 3 will exchange heat normally at that height. However, if it were a monolithic heat exchange, the temperature of the subsequently added material would be lower, thus affecting the reaction efficiency. Therefore, by implementing layered heat exchange and selecting to open or close it according to the material addition time, energy consumption is reduced.

[0054] By providing an S-shaped stirring heat exchange channel 17 inside the stirring heat exchange plate 16, the traditional heat exchange method, such as the heat exchange method from the outside to the inside of the jacket and heat exchange coil, is overcome. By setting the stirring heat exchange channel 17 inside, heat exchange can be directly carried out with the material during the stirring process, which can greatly improve the heat exchange efficiency, thereby reducing the stirring time and reducing the energy consumption output.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A feed reactor for AMPS production, characterized in that: The vessel includes a vessel body (1), on which several layers of layer-height heat exchange plates (2) are fixedly connected in parallel from top to bottom on the inner wall of the vessel body (1). Each layer of layer-height heat exchange plates (2) is surrounded by several circumferentially. Each layer-height heat exchange plate (2) is provided with an S-shaped layer-height heat exchange channel (3). The layer-height heat exchange channels (3) of different layers are independently connected and disconnected. The vessel body (1) is equipped with a rotating column (18) that rotates within it. Several layers of stirring heat exchange plates (16) are fixedly connected to the rotating column (18) from top to bottom. Each layer of stirring heat exchange plates (16) is surrounded by several stirring heat exchange channels (17) arranged in an S-shape within it. The stirring heat exchange channels (17) of different layers are connected to each other.

2. The feed reactor for AMPS production according to claim 1, characterized in that: The outer wall of the vessel body (1) is fixed with a liquid inlet shell (4) corresponding to each layer of heat exchange plate (2). The liquid inlet shell (4) is connected to the inlet end of the layer heat exchange channel (3). The vessel body (1) is provided with a heat exchange medium inlet pipe (5). The heat exchange medium inlet pipe (5) is connected to the inner cavity of the liquid inlet shell (4) through the liquid inlet pipe (6).

3. The feed reactor for AMPS production according to claim 2, characterized in that: An on / off valve (7) is connected to the inlet pipe (6).

4. The feed reactor for AMPS production according to claim 3, characterized in that: The outer wall of the vessel body (1) is fixed with a liquid outlet shell (9) corresponding to each layer of heat exchange plate (2). The liquid outlet shell (9) is connected to the outlet end of the layer heat exchange channel (3). The vessel body (1) is provided with a heat exchange medium discharge pipe (11) on the outside. The heat exchange medium discharge pipe (11) is connected to the inner cavity of the liquid outlet shell (9) through the liquid outlet pipe (10).

5. The feed reactor for AMPS production according to claim 4, characterized in that: The lower end of the rotating column (18) is provided with a heat exchange medium inlet channel (19), and the inlet end of the stirring heat exchange channel (17) at the bottom layer is connected to the heat exchange medium inlet channel (19).

6. The feed reactor for AMPS production according to claim 5, characterized in that: The rotating column (18) is provided with a heat exchange medium connecting channel (21) in the area between the adjacent stirring heat exchange channels (17). The inlet and outlet ends of the adjacent stirring heat exchange channels (17) are connected in series through the heat exchange medium connecting channel (21).

7. The feed reactor for AMPS production according to claim 6, characterized in that: The upper end of the rotating column (18) is provided with a heat exchange medium discharge channel (22), and the outlet end of the uppermost stirring heat exchange channel (17) is connected to the heat exchange medium discharge channel (22).

8. The feed reactor for AMPS production according to claim 7, characterized in that: A liquid collection hood (13) is fixedly attached to the top of the vessel body (1), and the upper end of the rotating column (18) extends into the liquid collection hood (13). A heat exchange medium discharge cylinder (15) communicating with its inner cavity is fixedly attached to the outer wall of the liquid collection hood (13).

9. The feed reactor for AMPS production according to claim 8, characterized in that: The lower end of the rotating column (18) extends below the vessel body (1) and is rotatably inserted with a heat exchange medium inlet cylinder (20).

10. The feed reactor for AMPS production according to claim 9, characterized in that: The height of the liquid outlet chamber shell (9) on the same layer is higher than the height of the liquid inlet chamber shell (4).

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