Feeding device for sulfonation reaction

Abstract

The utility model relates to the field of feeding devices, and discloses a sulfonation reaction feeding device which comprises a premixing box, a motor is fixedly installed at the bottom end of the premixing box, a rotating shaft is fixedly connected to the output end of the motor, a plurality of stirring rods are fixedly connected to the outer side of the rotating shaft, and a discharging assembly is fixedly installed at the top end of the rotating shaft. A feeding groove is formed in the top end of the premixing box, and a material guiding frame communicated with the feeding groove is fixedly connected to the inner wall of the premixing box. Raw materials are premixed before feeding, so that the situation that a large amount of heat is generated after the raw materials enter a reaction kettle, and the reaction is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of feeding devices, in particular to a feeding device for sulfonation reaction. Background Art

[0002] Sulfonation reactions can be divided into two categories: direct sulfonation and indirect sulfonation. Direct sulfonation refers to sulfonation through sulfuric acid, which is a reversible reaction. Under certain conditions, the sulfonic acid generated will hydrolyze. In the actual reaction process, the feeding process and reaction temperature of the sulfonation reaction will affect the efficiency of the overall reaction. Ordinary reactors generally use direct feeding to carry out the sulfonation reaction, and slowly add the reactants to the reaction system by controlling the flow rate. However, since the sulfonation reaction itself is an exothermic reaction, and the mixing of concentrated sulfuric acid and water will also release a large amount of heat, the local material temperature will be too high during the feeding process. Although the reactor is equipped with a stirring paddle and corresponding cooling equipment, both stirring cooling and heat transfer cooling require time, and the two exothermic reactions will generate a large amount of heat locally. The local excessively high reaction temperature not only affects the reaction efficiency of the sulfonation reaction, but also easily leads to the occurrence of other side reactions, ultimately affecting the overall product yield. Utility Model Content

[0003] The purpose of the utility model is to provide a feeding device for sulfonation reaction to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a feeding device for sulfonation reaction, comprising a premixing box, a motor fixedly installed at the bottom end of the premixing box, and a rotating shaft fixedly connected to the output end of the motor, a plurality of stirring rods fixedly connected to the outside of the rotating shaft, and a feeding assembly fixedly installed at the top end of the rotating shaft, a feeding trough is provided at the top end of the premixing box, and a material guide frame connected to the feeding trough is fixedly connected to the inner wall of the premixing box.

[0005] Preferably, the motor output end is rotatably connected to the center of the bottom end of the premixing box and extends into the interior of the premixing box, and the motor output end is fixedly connected to the bottom end of the rotating shaft through a coupling.

[0006] Preferably, the blanking assembly includes a mounting sleeve that is sleeved and fixed on the top end of the rotating shaft.

[0007] Preferably, a shielding plate is fixedly connected to the top end of the mounting sleeve.

[0008] Preferably, the shielding plate is provided with a material discharge trough in a vertical direction, and the top end of the shielding plate contacts the bottom end of the material guide frame.

[0009] Preferably, the material guide frame includes two inclined material guide plates, and the notches formed on the two material guide plates of the material guide frame close to the shielding disk coincide with the material discharge chute.

[0010] Preferably, a discharge pipe is provided at the bottom end of one side of the premixing box.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The utility model puts raw materials into the guide frame from a feeding trough, controls the motor so that its output end drives the rotating shaft to rotate, thereby causing the mounting sleeve at the top of the rotating shaft to drive the shielding disk to rotate, so that the discharge trough of the shielding disk periodically coincides with the notch at the bottom end of the guide frame, that is, the raw materials periodically fall from the guide frame through the discharge trough, and are then mixed under the stirring of multiple stirring rods. The motor drives the discharge trough to discharge periodically, thereby avoiding the raw materials from falling and mixing at one time to generate a large amount of heat, and at the same time making the raw materials mixed more evenly. The mixed raw materials are fed into the reactor through the discharge pipe on one side of the premixing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is an enlarged schematic diagram of the structure at point A of the present utility model.

[0015] In the figure: 1. premixing box; 2. motor; 3. rotating shaft; 4. stirring rod; 5. unloading assembly; 6. feeding chute; 7. material guide frame; 51. mounting sleeve; 52. shielding plate; 53. unloading chute. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example 1

[0018] See also Figure 1-Figure 2 The feeding device for a sulfonation reaction shown in the figure includes a premixing box 1, a motor 2 is fixedly mounted on the bottom end of the premixing box 1, and a rotating shaft 3 is fixedly connected to the output end of the motor 2, a plurality of stirring rods 4 are fixedly connected to the outside of the rotating shaft 3, and a feeding assembly 5 is fixedly mounted on the top of the rotating shaft 3, a feeding trough 6 is provided at the top of the premixing box 1, and a material guide frame 7 connected to the feeding trough 6 is fixedly connected to the inner wall of the premixing box 1.

[0019] In this embodiment, the output end of the motor 2 is rotated and penetrated with the center position of the bottom end of the premix box 1 and extends to the interior of the premix box 1, and the output end of the motor 2 is fixedly connected to the bottom end of the rotating shaft 3 through a coupling, and the unloading assembly 5 includes a mounting sleeve 51 that is sleeved and fixed on the top end of the rotating shaft 3, and a baffle plate 52 is fixedly connected to the top end of the mounting sleeve 51. The baffle plate 52 has a unloading trough 53 in the vertical direction, and the top end of the baffle plate 52 contacts the bottom end of the guide frame 7. The guide frame 7 includes two inclined guide plates, and the notches formed on the two guide plates of the guide frame 7 close to the side of the baffle plate 52 coincide with the unloading trough 53, and a discharge pipe is provided at the bottom end of one side of the premix box 1.

[0020] Furthermore, the raw materials are fed into the material guide frame 7 from the feeding trough 6, and the motor 2 is controlled so that its output end drives the rotating shaft 3 to rotate, so that the mounting sleeve 51 at the top of the rotating shaft 3 drives the shielding plate 52 to rotate, so that the discharge trough 53 of the shielding plate 52 periodically coincides with the notch at the bottom end of the material guide frame 7, that is, the raw materials periodically fall from the material guide frame 7 through the discharge trough 53, and then are mixed under the stirring of multiple stirring rods 4. The discharge trough 53 is driven by the motor 2 to periodically discharge the materials, so as to avoid the raw materials falling and mixing at one time to generate a large amount of heat, and at the same time, the raw materials are mixed more evenly. The mixed raw materials are fed to the reactor through the discharge pipe on one side of the premixing box 1.

[0021] The working principle of the present invention is as follows: the raw materials are put into the guide frame 7 from the feeding trough 6, and the motor 2 is controlled so that its output end drives the rotating shaft 3 to rotate, so that the mounting sleeve 51 at the top of the rotating shaft 3 drives the shielding disk 52 to rotate, so that the discharge trough 53 of the shielding disk 52 periodically coincides with the notch at the bottom end of the guide frame 7, that is, the raw materials periodically fall from the guide frame 7 through the discharge trough 53, and then are mixed under the stirring of multiple stirring rods 4. The motor 2 drives the discharge trough 53 to periodically discharge the materials, so as to avoid the raw materials falling and mixing at one time to generate a large amount of heat, and at the same time, the raw materials are mixed more evenly. The mixed raw materials are fed to the reactor through the discharge pipe on one side of the premixing box 1.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a sulfonation reaction, comprising a premixing tank (1), characterized in that: A motor (2) is fixedly mounted on the bottom end of the premixing box (1), and a rotating shaft (3) is fixedly connected to the output end of the motor (2). A plurality of stirring rods (4) are fixedly connected to the outside of the rotating shaft (3), and a feeding assembly (5) is fixedly mounted on the top end of the rotating shaft (3). A feeding trough (6) is provided on the top end of the premixing box (1), and a material guide frame (7) in communication with the feeding trough (6) is fixedly connected to the inner wall of the premixing box (1).

2. A feeding device for sulfonation reaction according to claim 1, characterized in that: The output end of the motor (2) is rotatably connected to the center of the bottom end of the premixing box (1) and extends into the interior of the premixing box (1), and the output end of the motor (2) is fixedly connected to the bottom end of the rotating shaft (3) via a coupling.

3. A feeding device for sulfonation reaction according to claim 2, characterized in that: The blanking assembly (5) comprises a mounting sleeve (51) which is sleeved and fixed on the top end of the rotating shaft (3).

4. A feeding device for sulfonation reaction according to claim 3, characterized in that: The top end of the mounting sleeve (51) is fixedly connected to a shielding plate (52).

5. A feeding device for sulfonation reaction according to claim 4, characterized in that: The shielding plate (52) is provided with a material discharge trough (53) in a vertical direction, and the top end of the shielding plate (52) contacts the bottom end of the material guide frame (7).

6. A feeding device for sulfonation reaction according to claim 5, characterized in that: The material guide frame (7) comprises two inclined material guide plates, and the notches formed on one side of the two material guide plates of the material guide frame (7) close to the shielding plate (52) coincide with the material discharge chute (53).

7. A feeding device for sulfonation reaction according to claim 6, characterized in that: A discharge pipe is provided at the bottom end of one side of the premixing box (1).

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