AMPS production slurry kettle

Abstract

This invention relates to the field of storage device technology and relates to an AMPS (Ammonium Metal Pulsat) production slurry reactor. It includes a reactor body with a vertically rotating column inside. Several layers of stirring and heat exchange plates are arranged side-by-side from top to bottom on the rotating column. Each layer of stirring and heat exchange plates has several heat exchange cavities within it. Independent flow channels for the heat exchange medium are opened within the rotating column, each connecting to a heat exchange cavity in each layer. The heat exchange cavities within the same layer are interconnected. This invention solves the problem in traditional reactors where, with continuous material addition, the material at the bottom reacts first, producing an exothermic reaction. Due to the limitations of existing stirring structures, it is impossible to quickly exchange heat with the material at different levels based on their reaction temperatures, thus affecting the reaction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of storage device technology, specifically to a slurry reactor for AMPS production. Background Technology

[0002] The slurry reactor for AMPS (2-acrylamido-2-methylpropanesulfonic acid) production is a key piece of equipment used for raw material mixing and reaction in the AMPS production process, and has a significant impact on the quality and production efficiency of AMPS.

[0003] AMPS production typically involves the mixed reaction of multiple raw materials, such as a process using acrylonitrile, fuming sulfuric acid, and isobutylene. During the reaction, precise control of temperature, pressure, and the mixing ratio of materials is required to ensure smooth reaction and product quality. This necessitates a slurry vessel with excellent sealing to prevent material leakage and the ingress of external impurities; precise temperature control capabilities to adapt to the temperature requirements of different reaction stages; and an efficient stirring device to ensure thorough and uniform mixing of the raw materials.

[0004] A prior art patent with publication number CN205462166U discloses a solution including a slurry reactor and a steam coil. The inlet of the steam coil is connected to the outlet of a waste heat steam pipe, and the outlet of the steam coil is connected to a steam recovery main pipe. The steam coil is spirally wound downwards from below the slurry surface in the slurry reactor for 5 to 20 turns, with each turn spaced 5 to 20 cm apart. The steam coil is covered with an insulation layer, which is then covered with an aluminum sheet. To ensure that the reaction slurry reactor fully absorbs and utilizes the waste heat of the steam, the cross-section of the steam coil is circular, elliptical, or hemispherical, with the side with the larger radius of curvature fitting against the slurry reactor, thus maximizing the contact area between the coil and the slurry reactor. The cross-section of the steam coil is preferably hemispherical to improve the utilization rate of the waste heat of the steam. This utility model has the characteristics of simple structure, convenient modification and installation, recovery and utilization of waste heat of steam, and achieving heat preservation and temperature control of the slurry reactor.

[0005] Existing devices, including those mentioned above, have gradually revealed shortcomings in the technology with use, mainly in the following aspects:

[0006] First, as materials are continuously added to the reactor, the materials at the bottom will react first, resulting in an exothermic reaction. Due to the limitations of the existing stirring structure, it is impossible to quickly exchange heat with the materials at different heights according to their reaction temperatures, thus affecting the reaction efficiency of the materials.

[0007] Secondly, existing slurry tanks all use coils to exchange heat from the outside to the inside of the material, which requires extending the stirring time of the internal stirring structure and reducing the uniformity of heat exchange in the slurry tank.

[0008] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0009] To address the shortcomings of existing technologies, the AMPS production slurry reactor provided by this utility model solves the problem that in traditional reactors, when materials are continuously added, the materials at the bottom layer react first, generating an exothermic reaction. Due to the limitations of existing stirring structures, it is impossible to quickly exchange heat between the materials at different layer heights according to their reaction temperatures, thus affecting the reaction efficiency of the materials.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] AMPS production slurry reactor includes a reactor body. A rotating column is vertically rotatable inside the reactor body. Several layers of stirring heat exchange plates are arranged side by side from top to bottom on the rotating column. Several stirring heat exchange plates are arranged around the circumference of each layer. Each stirring heat exchange plate has a heat exchange cavity. Independent flow channels for heat exchange medium are opened in the rotating column, which are connected to the heat exchange cavities of each layer. Several heat exchange cavities in the same layer are connected to each other.

[0012] As an optimized solution, a medium inlet / outlet annular cavity shell is fixedly connected to each layer of the stirring heat exchange plate on the rotating column. A partition ring is horizontally fixed inside the medium inlet / outlet annular cavity shell, and the partition ring divides the inner cavity of the medium inlet / outlet annular cavity shell from top to bottom into a medium outlet cavity and a medium inlet cavity.

[0013] As an optimized solution, the stirring heat exchange plate is fixedly attached to the outer wall of the annular cavity shell where the medium enters and exits.

[0014] As an optimized solution, the heat exchange cavity includes an S-shaped heat exchange channel, the inlet end of which is connected to the medium entering the cavity, and the outlet end of which is connected to the medium flowing out of the cavity.

[0015] As an optimized solution, the independent flow channel for the heat exchange medium includes a medium inlet channel and a medium outlet channel coaxially formed inside the rotating column. The outlet end of the medium inlet channel is connected to the medium inlet cavity, and the inlet end of the medium outlet channel is connected to the medium outlet cavity.

[0016] As an optimized solution, the inlet end of the medium entry channel extends through the lower end of the rotating column.

[0017] As an optimized solution, the outlet end of the medium outflow channel extends through the upper end of the rotating column.

[0018] As an optimized solution, the distances from the center of the rotating column are different among the several medium inlet channels or medium outlet channels.

[0019] As an optimized solution, the lower end of the rotating column extends to the bottom of the vessel body and is rotatably fitted with a liquid inlet hood. Several partition cylinders are fixedly connected in parallel from the outside to the inside of the liquid inlet hood, and the inner cavity of the liquid inlet hood is divided into several partition channels corresponding to the inlet end of the medium entry channel through the partition cylinders.

[0020] As an optimized solution, the lower end of the liquid inlet hood is fixedly connected to a medium inlet valve pipe that is connected to the partition channel.

[0021] As an optimized solution, a top sealing ring is provided between the upper end of the separator cylinder and the lower end of the rotating column.

[0022] As an optimized solution, a side sealing ring is provided between the inner wall of the liquid inlet hood and the outer wall of the rotating column.

[0023] As an optimized solution, the upper end of the rotating column extends above the vessel body, and a liquid outlet cover covering the upper end of the rotating column is fixedly connected to the top of the vessel body. A liquid outlet cylinder communicating with its inner cavity is fixedly connected to the outer wall of the liquid outlet cover.

[0024] As an optimized solution, a gear ring is fixedly connected to the outer wall of the rotating column, a drive motor is fixedly connected to the outer bottom surface of the vessel body, and a gear that meshes with the gear ring is fixedly connected to the output shaft of the drive motor.

[0025] As an optimized solution, an arc-shaped material discharge plate is fixedly connected to the inner wall of the rotating column, and the lower end of the material discharge plate rubs against the inner bottom surface of the vessel.

[0026] As an optimized solution, a feed cylinder communicating with the inner cavity is fixedly connected to the top of the vessel body.

[0027] As an optimized solution, a discharge cylinder communicating with the inner cavity is fixedly connected to the bottom of the vessel.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] By setting up several layers of heat exchange stirring plates from top to bottom, and independently switching the cooling medium between each layer of heat exchange stirring plates through independent flow channels of the heat exchange medium, the heat exchange cavity of the heat exchange stirring plate of that layer can be opened or closed according to the material layer of different heights, thereby improving the heat exchange efficiency of the stirring heat exchange plate to the material of that layer; achieving layered heat exchange, and selecting to open or close according to the material addition time, thereby reducing energy consumption output;

[0030] 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

[0031] 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.

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the separator cylinder of this utility model.

[0034] In the diagram: 1-Bottle body; 2-Rotating column; 3-Stirring heat exchange plate; 4-Heat exchange channel; 5-Medium inlet / outlet annular cavity shell; 6-Separating ring; 7-Medium outlet cavity; 8-Medium inlet cavity; 9-Medium inlet channel; 10-Medium outlet channel; 11-Gear ring; 12-Driver; 13-Liquid outlet hood; 14-Liquid outlet cylinder; 15-Feed cylinder; 16-Discharge cylinder; 17-Material discharge plate; 18-Liquid inlet hood; 19-Medium inlet valve pipe; 20-Separating cylinder; 21-Separating channel; 22-Top sealing ring; 23-Side sealing ring. Detailed Implementation

[0035] 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.

[0036] like Figure 1 and Figure 2 As shown, the slurry reactor for AMPS production includes a reactor body 1. A rotating column 2 is vertically rotatable inside the reactor body 1. Several layers of stirring heat exchange plates 3 are arranged side by side from top to bottom on the rotating column 2. Several stirring heat exchange plates 3 are arranged around the circumference of each layer. Heat exchange cavities are provided inside the stirring heat exchange plates 3. Independent flow channels for heat exchange medium are opened in the rotating column 2, which are connected to each heat exchange cavity. Several heat exchange cavities in the same layer are connected to each other.

[0037] On the rotating column 2, a medium inlet and outlet annular cavity shell 5 is fixedly connected to each layer of stirring heat exchange plate 3. A partition ring 6 is horizontally fixed inside the medium inlet and outlet annular cavity shell 5, and the partition ring 6 divides the inner cavity of the medium inlet and outlet annular cavity shell 5 from top to bottom into a medium outlet cavity 7 and a medium inlet cavity 8.

[0038] The stirring heat exchange plate 3 is fixedly attached to the outer wall of the annular cavity shell 5 for medium entry and exit.

[0039] The heat exchange cavity includes an S-shaped heat exchange channel 4. The inlet end of the heat exchange channel 4 is connected to the medium entry cavity 8, and the outlet end of the heat exchange channel 4 is connected to the medium exit cavity 7.

[0040] The independent flow channels for the heat exchange medium include a medium inlet channel 9 and a medium outlet channel 10 coaxially opened inside the rotating column 2. The outlet end of the medium inlet channel 9 is connected to the medium inlet cavity 8, and the inlet end of the medium outlet channel 10 is connected to the medium outlet cavity 7.

[0041] The inlet end of the medium entering channel 9 passes through the lower end of the rotating column 2.

[0042] The outlet end of the medium outflow channel 10 passes through the upper end of the rotating column 2.

[0043] The distances from the center of the rotating column 2 to the medium entering channel 9 or the medium exit channel 10 are different.

[0044] The lower end of the rotating column 2 extends to the bottom of the vessel body 1 and is fitted with a liquid inlet hood 18. Several partition cylinders 20 are fixedly connected in parallel from the outside to the inside of the liquid inlet hood 18, and the inner cavity of the liquid inlet hood 18 is divided into several partition channels 21 that are connected to the inlet end of the medium entry channel 9 through the partition cylinders.

[0045] The lower end of the liquid inlet hood 18 is fixedly connected to a medium inlet valve pipe 19 that is connected to the partition channel 21. By switching the medium inlet valve pipe 19 on and off, the heat exchange channel 4 of the corresponding layer height can be closed.

[0046] A top sealing ring 22 is provided between the upper end of the separator cylinder 20 and the lower end of the rotating column 2.

[0047] A side sealing ring 23 is provided between the inner wall of the liquid inlet hood 18 and the outer wall of the rotating column 2.

[0048] The upper end of the rotating column 2 extends above the vessel body 1. The top of the vessel body 1 is fixedly connected to a liquid outlet cover 13 covering the upper end of the rotating column 2. A liquid outlet cylinder 14 communicating with its inner cavity is fixedly connected to the outer wall of the liquid outlet cover 13.

[0049] A gear ring 11 is fixedly connected to the outer wall of the rotating column 2, and a drive motor 12 is fixedly connected to the outer bottom surface of the vessel body 1. The output shaft of the drive motor 12 is fixedly connected to a gear that meshes with the gear ring 11.

[0050] A material discharge plate 17 with an arc shape is fixed to the inner wall of the rotating column 2. The material discharge plate 17 rotates in its outward convex direction, and the lower end of the material discharge plate 17 rubs against the inner bottom surface of the vessel body 1.

[0051] The top of the vessel body 1 is fixedly connected to a feed cylinder 15 that communicates with its inner cavity.

[0052] The bottom of the vessel body 1 is fixedly connected to a discharge cylinder 16 that communicates with its inner cavity.

[0053] The working principle of this device is as follows:

[0054] By setting several layers of heat exchange stirring plates from top to bottom, and independently switching the cooling medium between each layer of heat exchange stirring plates through independent flow channels of the heat exchange medium, the heat exchange cavity of the heat exchange stirring plate of that layer can be opened or closed according to the material layer of different heights, thereby improving the heat exchange efficiency of the stirring heat exchange plate 3 to the material of that layer; achieving layered heat exchange, and selecting to open or close according to the material addition time, thereby reducing energy consumption output;

[0055] By providing an S-shaped stirring heat exchange channel 4 inside the stirring heat exchange plate 3, 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 4 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.

[0056] 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 slurry kettle for AMPS production, characterized in that: The vessel includes a vessel body (1), in which a rotating column (2) is vertically rotatable. The rotating column (2) has several layers of stirring heat exchange plates (3) arranged side by side from top to bottom. Each layer of stirring heat exchange plates (3) has several circumferentially arranged. The stirring heat exchange plates (3) have heat exchange cavities. The rotating column (2) has independent flow channels for heat exchange medium that connect to each heat exchange cavity. The heat exchange cavities in the same layer are connected to each other.

2. The slurry kettle for AMPS production according to claim 1, wherein: The rotating column (2) is fixed with a medium inlet and outlet annular cavity shell (5) corresponding to each layer of the stirring heat exchange plate (3). A partition ring (6) is horizontally fixed inside the medium inlet and outlet annular cavity shell (5), and the partition ring (6) divides the inner cavity of the medium inlet and outlet annular cavity shell (5) from top to bottom into a medium outlet cavity (7) and a medium inlet cavity (8). The stirring heat exchange plate (3) is surrounded and fixed to the outer wall of the medium inlet and outlet annular cavity shell (5).

3. The slurry kettle for AMPS production according to claim 2, wherein: The heat exchange cavity includes an S-shaped heat exchange channel (4) with its inlet end connected to the medium entry cavity (8) and its outlet end connected to the medium exit cavity (7).

4. The slurry kettle for AMPS production according to claim 3, wherein: The independent flow channel for the heat exchange medium includes a medium inlet channel (9) and a medium outlet channel (10) coaxially opened inside the rotating column (2). The outlet end of the medium inlet channel (9) is connected to the medium inlet cavity (8), and the inlet end of the medium outlet channel (10) is connected to the medium outlet cavity (7).

5. The slurry kettle for AMPS production according to claim 1, wherein: The inlet end of the medium inlet channel (9) passes through the lower end of the rotating column (2), and the outlet end of the medium outlet channel (10) passes through the upper end of the rotating column (2).

6. The slurry kettle for AMPS production according to claim 1, wherein: The lower end of the rotating column (2) extends to the bottom of the vessel body (1) and is fitted with a liquid inlet cover (18). Several partition cylinders (20) are fixedly connected in parallel from the outside to the inside of the liquid inlet cover (18), and the inner cavity of the liquid inlet cover (18) is divided into several partition channels (21) corresponding to the inlet end of the medium entry channel (9) through the partition cylinders.

7. The slurry kettle for AMPS production according to claim 6, wherein: The lower end of the liquid inlet hood (18) is fixedly connected to a medium inlet valve pipe (19) that is connected to the partition channel (21).

8. The AMPS production slurry kettle of claim 7, wherein: A top sealing ring (22) is provided between the upper end of the separator (20) and the lower end of the rotating column (2), and a side sealing ring (23) is provided between the inner wall of the liquid inlet hood (18) and the outer wall of the rotating column (2).

9. The AMPS production slurry kettle of claim 1, wherein: The upper end of the rotating column (2) extends above the vessel body (1), and the top of the vessel body (1) is fixedly connected to a liquid outlet cover (13) covering the upper end of the rotating column (2), and a liquid outlet cylinder (14) communicating with its inner cavity is fixedly connected to the outer wall of the liquid outlet cover (13).

10. The slurry kettle for AMPS production according to claim 1, wherein: The rotating column (2) has an arc-shaped material discharge plate (17) fixedly connected to its inner wall. The lower end of the material discharge plate (17) rubs against the inner bottom surface of the vessel body (1).

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