Sulfonating reactor for preparing heavy alkyl benzene sulfonic acid

Abstract

The utility model discloses a sulfonation reactor for preparing heavy alkyl benzene sulfonic acid, which relates to the technical field of preparation of heavy alkyl benzene sulfonic acid and comprises a reaction tank, a motor is arranged at the top of the reaction tank, a rotating shaft is arranged at the bottom end of the motor, and two connecting rods are arranged outside the rotating shaft. And uniform smearing plates are arranged at the bottoms of the two connecting rods. According to the reaction tank, the motor is started to drive the rotating shaft to rotate, so that the stirring bars and the stirring rods also rotate continuously, and raw materials in the reaction tank can be mixed and stirred, so that the problem that the mixing effect becomes poor due to stirring factors during preparation of heavy alkyl benzene sulfonic acid is solved; meanwhile, the rotating stirring rod can stir raw materials to be precipitated at the bottom of the reaction tank, the phenomenon that an additive possibly precipitates is avoided, in addition, when the stirring bar rotates again, the cleaning scraping plate can scrape the raw materials adhered to the inner wall of the tank body, so that the raw materials participate in stirring, and the preparation effect of the heavy alkyl benzene sulfonic acid is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of heavy alkylbenzene sulfonic acid preparation technology, specifically a sulfonation reactor for preparing heavy alkylbenzene sulfonic acid. Background Technology

[0002] Heavy alkylbenzene sulfonic acid is an organic compound, specifically obtained by introducing one or more long-chain alkyl groups (usually referring to alkyl groups with a large number of carbon atoms, such as dodecyl) onto a benzene ring, followed by a sulfonation reaction of the sulfonic acid group on the benzene ring. This compound has wide applications in the chemical industry, particularly in the petroleum industry, detergent manufacturing, and certain specific organic synthesis processes. The molecular structure of heavy alkylbenzene sulfonic acid endows it with a series of unique physical and chemical properties. Due to differences in the length and branching of the alkyl chain, heavy alkylbenzene sulfonic acid can exhibit different melting points, boiling points, solubilities, and surface activities. These properties enable it to perform excellently as an emulsifier, wetting agent, dispersant, or catalyst for certain chemical reactions.

[0003] However, in existing technologies, the mixing effect of heavy alkylbenzene sulfonic acid may be poor due to stirring during preparation, and some additives required for preparation may precipitate, further affecting the preparation effect of heavy alkylbenzene sulfonic acid. Therefore, we provide a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid. Utility Model Content

[0004] The purpose of this invention is to provide a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid, comprising a reaction vessel, a motor mounted on the top of the reaction vessel, a rotating shaft mounted on the bottom of the motor, two connecting rods mounted on the outside of the rotating shaft, a spreading plate mounted on the bottom of each of the two connecting rods, two stirring bars mounted on the outside of the rotating shaft near the bottom of the spreading plate, a cleaning scraper mounted on the end of each of the two stirring bars away from the rotating shaft, two stirring rods mounted on the bottom of the rotating shaft, and a strainer mounted inside the reaction vessel near the bottom of the spreading plate, with a bearing mounted inside the strainer.

[0006] As a further preferred embodiment of this technical solution, the reaction vessel has a discharge port on one side and a feed port on the top side.

[0007] As a further preferred embodiment of this technical solution, a motor is fixedly connected to the top of the reaction vessel, and the output end of the motor at the bottom is fixedly connected to the top of the rotating shaft.

[0008] As a further preferred embodiment of this technical solution, the rotating shaft is externally fixedly connected to two connecting rods, and a spreading plate is fixedly connected to the bottom of each of the two connecting rods.

[0009] As a further preferred embodiment of this technical solution, two stirring bars are fixedly connected to the bottom of the rotating shaft near the spreading plate, and a cleaning scraper is fixedly connected to the end of each stirring bar away from the rotating shaft.

[0010] As a further preferred embodiment of this technical solution, the cleaning scraper contacts the inner wall of the reaction vessel, and two stirring rods are fixedly connected to the bottom end of the rotating shaft.

[0011] As a further preferred embodiment of this technical solution, the external part of the mesh is fixedly connected to the inner wall of the reaction vessel, and the internal part of the mesh is fixedly connected to a bearing, the inner surface of which is fixedly connected to the external part of the rotating shaft.

[0012] This invention provides a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid, which has the following advantages:

[0013] This invention uses a motor to drive a rotating shaft, which in turn causes the stirring bar and stirring rod to rotate continuously. This mixes the raw materials in the reaction vessel, thus avoiding the problem of poor mixing effect that may occur during the preparation of heavy alkylbenzene sulfonic acid due to stirring. At the same time, the rotating stirring rod can stir the raw materials that are about to settle at the bottom of the reaction vessel, preventing the additives from settling. In addition, when the stirring bar rotates, the cleaning scraper can scrape the raw materials adhering to the inner wall of the vessel, allowing the raw materials to participate in the stirring, further ensuring the preparation effect of heavy alkylbenzene sulfonic acid. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid according to the present invention.

[0015] Figure 2 This is a cross-sectional side view of a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid according to the present invention.

[0016] Figure 3 This is a partial side view of a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid according to the present invention.

[0017] Figure 4 This is a partial front view of a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid according to the present invention.

[0018] In the diagram: 11. Reaction vessel; 12. Motor; 13. Shaft; 14. Connecting rod; 15. Spreading plate; 16. Stirring rack; 17. Cleaning scraper; 18. Stirring rod; 19. Strainer; 110. Bearing; 111. Discharge port; 112. Feed port. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1-4 As shown in this embodiment, a sulfonation reactor for preparing heavy alkylbenzene sulfonic acid includes a reaction vessel 11. A discharge port 111 is provided on one side of the reaction vessel 11, and a feed port 112 is provided on one side of the top of the reaction vessel 11. A motor 12 is installed on the top of the reaction vessel 11, and a rotating shaft 13 is installed at the bottom of the motor 12. The motor 12 is fixedly connected to the top of the reaction vessel 11, and the output end of the bottom of the motor 12 is fixedly connected to the top of the rotating shaft 13. Two connecting rods 14 are provided on the outside of the rotating shaft 13, and a spreading plate 15 is provided at the bottom of each of the two connecting rods 14. Two stirring rods are fixedly connected to the outside of the rotating shaft 13 near the bottom of the spreading plate 15. Two stirring plates 16 are provided with cleaning scrapers 17 at the ends of the two stirring plates 16 away from the rotating shaft 13. Two stirring plates 16 are fixedly connected to the bottom of the rotating shaft 13 near the spreading plate 15. Two stirring rods 18 are provided at the bottom of the rotating shaft 13. The cleaning scrapers 17 are in contact with the inner wall of the reaction vessel 11. Two stirring rods 18 are fixedly connected to the bottom of the rotating shaft 13. A strainer 19 is provided inside the reaction vessel 11 near the bottom of the spreading plate 15. A bearing 110 is provided inside the strainer 19. The outside of the strainer 19 is fixedly connected to the inner wall of the reaction vessel 11. The bearing 110 is fixedly connected inside the strainer 19. The inner surface of the bearing 110 is fixedly connected to the outside of the rotating shaft 13.

[0021] In this embodiment, when the device is used to prepare heavy alkylbenzene sulfonic acid, the raw materials required for the preparation of heavy alkylbenzene sulfonic acid are first fed into the reaction vessel 11 through the feed inlet 112. The raw materials will fall onto the screen 19. The motor 12 is started to drive the rotating shaft 13 to rotate, which in turn drives the spreading plate 15 to rotate. Thus, the raw materials on the screen 19 can be ground and spread evenly. The raw materials will then fall through the screen 19 to the bottom of the reaction vessel 11. As the rotating rod continues to rotate, the stirring bar 16 and the stirring rod 18 will also continue to rotate, thereby mixing and stirring the raw materials in the reaction vessel 11. This can avoid the problem that the mixing effect may be poor due to stirring factors during the preparation of heavy alkylbenzene sulfonic acid. At the same time, the rotating stirring rod 18 can stir the raw materials that are about to settle at the bottom of the reaction vessel 11, preventing the additives from settling. In addition, when the stirring bar 16 rotates, the cleaning scraper 17 can scrape the raw materials adhering to the inner wall of the vessel, so that the raw materials participate in the stirring, further ensuring the preparation effect of heavy alkylbenzene sulfonic acid.

[0022] This invention provides a sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid, the specific working principle of which is as follows:

[0023] When using this device to prepare heavy alkylbenzene sulfonic acid, firstly, it is necessary to strictly follow the formulation requirements for the preparation of heavy alkylbenzene sulfonic acid and accurately and carefully add all the necessary raw materials into the reaction vessel 11 through the specially designed feed inlet 112. During this process, the operator needs to closely monitor the amount and speed of raw material addition to ensure the smooth progress of the subsequent reaction. After these raw materials enter the reaction vessel 11 through the feed inlet 112, they will naturally fall onto the mesh 19 located inside the reaction vessel 11. After starting the motor 12, the rotating shaft 13 connected to it will begin to rotate in an orderly manner. The rotation of the rotating shaft 13, through a clever mechanical transmission design, will also drive the spreading plate 15 to rotate. During the rotation of the spreading plate 15, its unique structure and surface design allow it to fully contact the raw materials on the strainer 19. Through this contact, the spreading plate 15 can apply a certain pressure and friction to the raw materials on the strainer 19, thereby performing a fine and uniform grinding operation on these raw materials. At the same time, the rotation of the spreading plate 15 can also spread the raw materials evenly, ensuring that each portion of raw materials is fully processed, thus achieving a perfect spreading effect. After such grinding and spreading, the raw materials originally placed on the strainer 19 will gradually pass through the strainer 19 and slowly fall to the bottom of the reaction vessel 11. As the rotating rod continues to rotate under the drive of the motor 12, the connected stirring bar 16 and stirring rod 18 also... The stirring rod 18 and stirring bar 16 will rotate continuously and stably. During their rotation, they will form a specific fluid motion pattern within the reaction vessel 11. This motion pattern ensures that the raw materials within the reaction vessel 11 are thoroughly mixed, guaranteeing a complete chemical reaction between the various raw materials. In this way, the problem of poor mixing due to insufficient or uneven stirring during the preparation of heavy alkylbenzene sulfonic acid can be effectively avoided. Furthermore, the continuously rotating stirring rod 18 has another important function: at the bottom of the reaction vessel 11, due to gravity and the progress of the chemical reaction, some raw materials may gradually show a tendency to precipitate. The rotation of the stirring rod 18 can promptly address this issue. Stirring these raw materials that are about to settle breaks up their sedimentation state, allowing them to re-involve in the reaction system. This stirring is particularly important for additives, as it effectively prevents them from failing to function properly due to sedimentation, thus ensuring the stability and consistency of the entire reaction process. Furthermore, as the stirring bar 16 rotates, the accompanying cleaning scraper 17 also moves synchronously. The cleaning scraper 17 is ingeniously designed; it fits tightly against the inner wall of the tank. As the stirring bar 16 rotates, the cleaning scraper 17 performs a regular scraping motion along the inner wall of the tank, effectively scraping off any raw materials that might adhere to the inner wall.By returning it to the reaction system to participate in stirring and reaction, this meticulous operation further ensures the preparation effect of heavy alkylbenzene sulfonic acid, thus reliably guaranteeing the quality of the final product.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sulfonation reactor for the preparation of heavy alkylbenzene sulfonic acid, comprising a reaction vessel (11), characterized in that: A motor (12) is installed at the top of the reaction vessel (11), and a rotating shaft (13) is installed at the bottom of the motor (12). Two connecting rods (14) are installed on the outside of the rotating shaft (13), and a spreading plate (15) is installed at the bottom of each of the two connecting rods (14). Two stirring bars (16) are installed on the outside of the rotating shaft (13) near the bottom of the spreading plate (15). A cleaning scraper (17) is installed at the end of each of the two stirring bars (16) away from the rotating shaft (13). Two stirring rods (18) are installed at the bottom of the rotating shaft (13). A strainer (19) is installed inside the reaction vessel (11) near the bottom of the spreading plate (15), and a bearing (110) is installed inside the strainer (19).

2. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: The reaction vessel (11) has a discharge port (111) on one side and a feed port (112) on the top side.

3. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: A motor (12) is fixedly connected to the top of the reaction vessel (11), and the output end of the motor (12) is fixedly connected to the top of the rotating shaft (13).

4. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: The rotating shaft (13) is externally fixedly connected to two connecting rods (14), and a smoothing plate (15) is fixedly connected to the bottom of each of the two connecting rods (14).

5. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: Two stirring bars (16) are fixedly connected to the outside of the rotating shaft (13) near the bottom of the spreading plate (15), and a cleaning scraper (17) is fixedly connected to the end of each stirring bar (16) away from the rotating shaft (13).

6. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: The cleaning scraper (17) contacts the inner wall of the reaction vessel (11), and two stirring rods (18) are fixedly connected to the bottom end of the rotating shaft (13).

7. The sulfonation reactor for preparing heavy alkylbenzene sulfonic acid according to claim 1, characterized in that: The external of the mesh (19) is fixedly connected to the inner wall of the reaction vessel (11), and the internal of the mesh (19) is fixedly connected to a bearing (110). The inner surface of the bearing (110) is fixedly connected to the external of the rotating shaft (13).

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