A production device of sulfuron original drug

Abstract

The utility model belongs to sulfonylurea production technical field discloses a kind of production device of sulfonylurea, including reaction kettle main body, and the inside of reaction kettle main body has hollow interlayer;Spiral heat exchange mechanism, spiral heat exchange mechanism includes by concentric arrangement inner spiral guide vane and outer spiral cooling pipe, and the rotation direction of inner spiral guide vane and outer spiral cooling pipe is opposite;Dispersion mechanism, dispersion mechanism includes with the vertical and rotation installation drive shaft of reaction kettle main body, and drive shaft is driven by drive motor mounted on reaction kettle main body, and three layers of dispersion disc are installed on drive shaft, and inner spiral guide vane is welded to the inner wall of reaction kettle main body, and the inclination angle of inner spiral guide vane is 45 °, and the plate height of inner spiral guide vane is one sixth of reaction kettle main body diameter.The utility model not only can realize dynamic strengthening heat exchange, but also can guarantee the efficiency of mass transfer in high viscosity stage, while it can solve the problem of local overheating caused by sulfonation heat release.

Description

Technical Field

[0001] This utility model relates to the field of sulfonamide technical production technology, and in particular to a sulfonamide technical production apparatus. Background Technology

[0002] The production facility for sulfonamide technical material refers to a complete set of process equipment, reactors, separation and purification units, control systems, and related auxiliary facilities specifically designed for the industrial-scale mass production of sulfonamide technical material (i.e., high-purity sulfonamide active ingredient). Its function is to realize the chemical synthesis and purification of sulfonamide technical material. It converts raw materials into sulfonamide through a series of chemical reactions (such as sulfonation, condensation, etc.) and removes impurities through unit operations such as separation, crystallization, and drying, ultimately obtaining sulfonamide technical material products that meet quality standards (such as purity, moisture content, impurity content, etc.).

[0003] The sulfonation reaction in current sulfonium production has the following problems:

[0004] 1) The sulfonation reaction is highly exothermic, and the traditional jacket heat exchange efficiency is low, which can easily lead to local overheating side reactions;

[0005] 2) The viscosity of the material increases significantly with the reaction process, which leads to a decrease in mass transfer efficiency. Therefore, we propose a production device for sulfonamide technical. Utility Model Content

[0006] In view of the above-mentioned problems of the intense exothermic reaction of the existing sulfonation process, the low heat exchange efficiency of the traditional jacket, the easy occurrence of local overheating side reactions, and the significant increase in material viscosity as the reaction progresses, resulting in a decrease in mass transfer efficiency, this utility model is proposed.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A production apparatus for sulfonamide technical grade includes a reaction vessel body, wherein the interior of the reaction vessel body has a hollow jacket.

[0009] A spiral heat exchange mechanism, comprising an inner spiral guide plate and an outer spiral cooling pipe arranged concentrically, wherein the inner spiral guide plate and the outer spiral cooling pipe rotate in opposite directions;

[0010] The dispersion mechanism includes a drive shaft that is perpendicular to and rotatably mounted on the reactor body. The drive shaft is driven by a drive motor mounted on the reactor body, and three layers of dispersion discs are mounted on the drive shaft.

[0011] As a technical solution for the production apparatus of sulfonamide technical of this utility model, wherein: the inner spiral guide plate is welded to the inner wall of the reactor body, the inclination angle of the inner spiral guide plate is 45°, and the height of the inner spiral guide plate is one-sixth of the diameter of the reactor body.

[0012] As a technical solution for the production device of sulfonamide technical of this utility model, the outer spiral cooling pipe is embedded in the hollow jacket of the main body of the reaction vessel, the outer spiral cooling pipe adopts a segmented variable diameter design, and the diameter of the inlet section of the outer spiral cooling pipe is 1.5 times that of the outlet section.

[0013] As a technical solution for the production apparatus of sulfonamide technical of this utility model, the three layers of dispersion discs are equidistantly arranged along the axial length of the drive shaft, and the edges of the dispersion discs are provided with serrated protrusions.

[0014] As a technical solution for the production apparatus of sulfonamide technical of this utility model, the dispersion disk is provided with a plurality of through holes, and the plurality of through holes are equidistantly arranged along the axial / circumferential direction of the dispersion disk, and the upper diameter of the through holes is larger than the lower diameter.

[0015] As a technical solution for the production apparatus of sulfonamide technical of this utility model, wherein: an auxiliary feed port is provided on the side wall of the cavity of the main body of the reactor, and the auxiliary feed port is connected to the cavity of the main body of the reactor.

[0016] As a technical solution for the production apparatus of sulfonamide technical of this utility model, wherein: a conical guide port is installed at the bottom of the main body of the reaction vessel, and the conical guide port is connected to the main body of the reaction vessel, and the cone angle of the conical guide port is 120°.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. This utility model, by setting concentrically arranged inner spiral guide plates and outer spiral cooling pipes with opposite rotation directions, allows cooling water to flow in at high speed from the inlet section of the outer spiral cooling pipe and out from the outlet section during production. At the same time, the material is pushed by the inner spiral guide plates to push the spiral, forming turbulence in the opposite direction to the outer spiral cooling pipe, thereby improving heat exchange and effectively suppressing local overheating. This enables dynamic enhanced heat exchange to solve the problem of local overheating caused by intense sulfonation exothermic reaction.

[0019] 2. In this utility model, by starting the drive motor, the output shaft of the drive motor drives the drive shaft to rotate, and the drive shaft drives the dispersing disc to rotate. The dispersing disc mixes the material, the sawtooth protrusions break up the agglomeration of particles, and the through holes generate micro eddies. This allows the sawtooth protrusions and through holes of the dispersing disc to overcome the viscosity limit, ensuring the mass transfer efficiency in the high viscosity stage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0024] Figure 4 This is a schematic diagram of the dispersing mechanism of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] In the figure: 1. Reactor body; 101. Hollow jacket; 2. Inner spiral guide plate; 3. Outer spiral cooling pipe; 4. Drive shaft; 5. Drive motor; 6. Dispersion disc; 601. Serrated protrusion; 602. Through hole; 7. Auxiliary feed port; 8. Conical guide port. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1-4 A production apparatus for sulfonamide technical material is provided. The production apparatus for sulfonamide technical material includes a reaction vessel body 1, and the interior of the reaction vessel body 1 has a hollow jacket 101.

[0029] The spiral heat exchange mechanism includes an inner spiral guide plate 2 and an outer spiral cooling pipe 3 arranged concentrically. The inner spiral guide plate 2 and the outer spiral cooling pipe 3 rotate in opposite directions. The inner spiral guide plate 2 can force the material to move along the spiral path, prolong the residence time, and improve the mixing uniformity. The outer spiral cooling pipe 3 rotates in the opposite direction to the inner spiral guide plate 2, which enhances turbulence, breaks the boundary layer, and significantly improves the heat exchange efficiency.

[0030] The dispersion mechanism includes a drive shaft 4 that is perpendicular to and rotatably mounted on the reactor body 1. The drive shaft 4 is driven by a drive motor 5 mounted on the reactor body 1. Three layers of dispersion disks 6 are mounted on the drive shaft 4. The three layers of dispersion disks 6 can adapt to viscosity changes at different reaction stages, strengthen shear dispersion in layers, and avoid local material accumulation.

[0031] Reference Figure 2 and Figure 3 The inner spiral guide plate 2 is welded to the inner wall of the reactor body 1. The inclination angle of the inner spiral guide plate 2 is 45°, and the plate height of the inner spiral guide plate 2 is one-sixth of the diameter of the reactor body 1. In application, the inner spiral guide plate 2 with an inclination angle of 45° can balance the axial and radial flow and avoid excessive energy consumption. At the same time, the plate height of one-sixth of the diameter of the reactor body 1 can ensure that the guiding intensity matches the volume of the reactor body 1 and prevent flow dead zones.

[0032] Reference Figure 2 and Figure 3 The outer spiral cooling pipe 3 is embedded in the hollow jacket 101 of the reactor body 1. The outer spiral cooling pipe 3 adopts a segmented variable diameter design, and the diameter of the inlet section of the outer spiral cooling pipe 3 is 1.5 times that of the outlet section. In application, the large diameter of the inlet section (1.5 times that of the outlet) ensures the flow rate of the cooling medium, while the small diameter of the outlet section maintains the flow rate, thereby improving the overall cooling uniformity and eliminating local overheating.

[0033] Reference Figure 2 and Figure 3 The three-layer dispersing discs 6 are equidistantly arranged along the axial length of the drive shaft 4. The edges of the dispersing discs 6 are provided with serrated protrusions 601. In application, the serrated protrusions 601 can enhance the shearing force on high-viscosity materials and break up agglomeration.

[0034] Reference Figure 2 and Figure 4 The dispersion disk 6 has several through holes 602, and the several through holes 602 are equidistant along the axial / circumferential direction of the dispersion disk 6. The upper diameter of the through hole 602 is larger than the lower diameter. In application, the upper-large and lower-small design forms a Venturi effect, which can accelerate the passage of materials and generate micro eddies, thereby enhancing mass transfer.

[0035] Reference Figure 1 and Figure 2 An auxiliary feed port 7 is provided on the side wall of the cavity of the reactor body 1, and the auxiliary feed port 7 is connected to the cavity of the reactor body 1. In application, the auxiliary feed port 7 can be used to add raw materials (such as sulfonating agents) during the reaction, avoid temperature and pressure fluctuations caused by opening the lid, and maintain reaction stability.

[0036] Reference Figure 1 and Figure 2 The bottom of the reactor body 1 is equipped with a conical guide port 8, which is connected to the reactor body 1. The cone angle of the conical guide port 8 is 120°. In application, the 120° cone angle of the conical guide port 8 can reduce material residue and adapt to the flow characteristics of high viscosity materials, preventing crystallization blockage.

[0037] The working principle of this utility model is as follows: By starting the drive motor 5 fixed on the main body 1 of the reaction vessel, the output shaft of the drive motor 5 drives the drive shaft 4 to rotate, the drive shaft 4 drives the dispersion disk 6 to rotate, and the dispersion disk 6 mixes the material. The serrated protrusions 601 break up the agglomeration of particles, while the through holes 602 generate micro eddies. At the same time, cooling water flows in at high speed from the inlet section of the outer spiral cooling pipe 3 and flows out from the outlet section. Meanwhile, the material is pushed by the rotating dispersion disk 6 through the inner spiral guide plate 2 to push the spiral, and flows in the opposite direction to the outer spiral cooling pipe 3 to form turbulence, thereby improving heat exchange and effectively suppressing local overheating. During this period, sulfonating agent can be injected through the auxiliary feed port 7 to avoid temperature and pressure fluctuations caused by opening the lid, maintain reaction stability, thereby achieving dynamic enhanced heat exchange and ensuring the efficiency of mass transfer in the high viscosity stage, so as to solve the problem of local overheating caused by intense sulfonation exothermic reaction.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A production apparatus for sulfonamide technical grade, characterized in that: include: The reactor body (1) has a hollow jacket (101) inside. A spiral heat exchange mechanism, comprising an inner spiral guide plate (2) and an outer spiral cooling pipe (3) arranged concentrically, wherein the inner spiral guide plate (2) and the outer spiral cooling pipe (3) rotate in opposite directions; The dispersion mechanism includes a drive shaft (4) that is perpendicular to and rotatably mounted on the reactor body (1). The drive shaft (4) is driven by a drive motor (5) mounted on the reactor body (1). Three layers of dispersion discs (6) are mounted on the drive shaft (4).

2. The apparatus for producing sulfonamide technical according to claim 1, characterized in that: The inner spiral guide plate (2) is welded to the inner wall of the reactor body (1). The inclination angle of the inner spiral guide plate (2) is 45°, and the plate height of the inner spiral guide plate (2) is one-sixth of the diameter of the reactor body (1).

3. The apparatus for producing sulfonamide technical according to claim 1, characterized in that: The outer spiral cooling pipe (3) is embedded in the hollow jacket (101) of the reactor body (1). The outer spiral cooling pipe (3) adopts a segmented variable diameter design, and the diameter of the inlet section of the outer spiral cooling pipe (3) is 1.5 times that of the outlet section.

4. The apparatus for producing sulfonamide technical according to claim 1, characterized in that: The three-layer dispersion disks (6) are equidistantly arranged along the axial length direction of the drive shaft (4), and the edges of the dispersion disks (6) are provided with serrated protrusions (601).

5. The apparatus for producing sulfonamide technical according to claim 4, characterized in that: The dispersing disk (6) has a plurality of through holes (602), and the plurality of through holes (602) are equidistant along the axial / circumferential direction of the dispersing disk (6), and the upper diameter of the through hole (602) is larger than the lower diameter.

6. The apparatus for producing sulfonamide technical according to claim 1, characterized in that: An auxiliary feed inlet (7) is provided on the side wall of the cavity of the reactor body (1), and the auxiliary feed inlet (7) is connected to the cavity of the reactor body (1).

7. The apparatus for producing sulfonamide technical according to claim 1, characterized in that: The bottom of the reactor body (1) is equipped with a conical guide port (8), and the conical guide port (8) is connected to the reactor body (1). The cone angle of the conical guide port (8) is 120°.

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