Decoloring kettle

Abstract

The utility model relates to the technical field of decoloration, in particular to a decoloration kettle. Comprising a kettle body, the upper end and the lower end of the kettle body are fixedly communicated with an inlet pipe and an outlet pipe respectively, the outlet pipe is concentric with the kettle body, a rotating pipe is concentrically and rotatably connected in the kettle body, the upper end of the rotating pipe extends to the outer side of the kettle body, the upper portion of the rotating pipe is rotatably and hermetically connected with the kettle body, and the lower end of the outlet pipe is fixedly and hermetically connected with a sealing plate; an annular gap is formed between the rotating pipe and the outlet pipe, the outlet pipe is fixedly communicated with a communicating pipe, the rotating pipe in the kettle body is fixedly communicated with a plurality of shells, openings are formed in the front and rear ends of the shells, and filter screens are fixed in the openings. Activated carbon is added into the shell through the rotating pipe, and the activated carbon in the shell can be in full contact with materials in the process that the rotating rod drives the shell to rotate, so that the materials can be decolored.

Description

Technical Field

[0001] The utility model relates to the technical field of decolorization, in particular to a decolorization kettle. Background Art

[0002] The secondary refining process of chloromethylpyridine includes 5 steps: pickling, decolorization, washing, desolventization and distillation, and unqualified material treatment. The specific operation of the decolorization process of the pickled material is as follows: add a certain amount of water and activated carbon to the decolorization kettle, start stirring, heat up to 70°C, start dripping the pickling liquid from the material high-level tank, the dripping time is 3-3.5 hours, the dripping temperature is 70-72°C, after the dripping is completed, keep warm for 2.5-3 hours, stop stirring, use the decolorization liquid transfer pump to pump to the filter while hot to filter out the activated carbon, and the filtrate goes to the washing kettle for washing.

[0003] After the material is decolorized, it is necessary to filter the material and the activated carbon. When decolorizing again, the activated carbon needs to be put into the decolorization kettle, which is troublesome to operate.

[0004] In the prior art, a patent document with application number CN201320547612.3 discloses an activated carbon feeding tank for decolorization. When in use, a whole bag of bagged activated carbon is placed through the activated carbon inlet, and the bag mouth is fixed on the hanging device. Open the air inlet, and add an appropriate amount of liquid plasticizer to be decolorized into the activated carbon feeding tank through the liquid inlet. Close the air inlet, start the motor, rotate the stirring paddle, and the blade cuts the activated carbon bag hanging in the tank. The activated carbon flows into the tank and is mixed with the liquid material in the tank under the action of the stirring paddle. The evenly mixed decolorized liquid enters the decolorization kettle through the liquid outlet pipe outside the liquid outlet. The solution of this patent also requires that the activated carbon and the material be mixed before entering the decolorization kettle, and screening equipment is needed to separate the activated carbon and the material in the later stage.

[0005] A decolorization kettle is disclosed in the patent document with application number CN201920060640.X. The kettle body is provided with a filter screen plate and a barrier plate. The barrier plate is provided with a liquid leakage port. A cover plate is slidably provided on the liquid leakage port. In the decolorization working state, the cover plate covers the liquid leakage port, and the activated carbon and the feed liquid are adsorbed and decolorized in the space inside the kettle on the barrier plate. After the decolorization is completed, the cover plate slides open to open the liquid leakage port, and the feed liquid enters the conical kettle bottom through the mesh of the filter screen plate and flows out from the discharge port, while the activated carbon is intercepted by the filter screen plate and stays in the kettle body, directly realizing the separation of the decolorant and the feed liquid, eliminating the subsequent filtration process. However, after the material is separated from the activated carbon, a large amount of material still remains in the activated carbon, which makes it inconvenient to effectively discharge the residual material in the activated carbon.

[0006] The patent document with application number CN202021115927.7 discloses a decolorizing kettle for plasticizer production. The plasticizer material flows in decolorizing chamber A, decolorizing chamber B, and decolorizing chamber C in turn while being stirred. During the flow process, the activated carbon filled in the net cylinder fully decolorizes the plasticizer material; the utility model realizes the continuous decolorization of the plasticizer material, and after multiple decolorizations, it can ensure that the decolorization of the plasticizer meets the qualified requirements; in the utility model, the activated carbon is filled in the net cylinder, and the particle sizes of the activated carbon in different chambers do not interfere with each other. The particle size of the activated carbon can be selected according to different adsorption effects. The replacement of the old and new activated carbon is very convenient. The replacement process only needs to lift the filled net cylinder from the installation sleeve. The replacement process of the old and new activated carbon will not affect the continuity of the plasticizer decolorization process. In the technical solution of this patent, the activated carbon is installed in the net cylinder, so that the activated carbon is not directly added to the material. However, after the decolorization is completed, the problem that the residual material in the activated carbon cannot be effectively discharged is still not solved. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a decolorizing kettle which is convenient for replacing activated carbon and convenient for discharging the residual materials in the activated carbon after decolorization is completed.

[0008] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0009] A decolorizing kettle comprises a kettle body, wherein the upper and lower ends of the kettle body are respectively fixedly connected with an inlet pipe and an outlet pipe, the outlet pipe is concentric with the kettle body, the kettle body is concentrically rotatably connected with a rotating pipe, the upper end of the rotating pipe extends to the outside of the kettle body, the upper part of the rotating pipe is rotatably sealed with the kettle body, the lower end of the outlet pipe is fixedly sealed with a sealing plate, the lower end of the rotating pipe penetrates the sealing plate, the rotating pipe and the sealing plate are rotatably sealed, an annular gap is arranged between the rotating pipe and the outlet pipe, a connecting pipe is fixedly connected on the outlet pipe, a plurality of shells are fixedly connected on the rotating pipe in the kettle body, openings are provided at both the front and rear ends of the shells, filters are fixed in the openings, a driving device for driving the rotating pipe to rotate is fixed on the upper end of the kettle body, and sealing caps are detachably fixedly and sealedly connected at the upper and lower ends of the rotating pipe.

[0010] Specifically, the driving device includes a motor, an upper end of a rotating tube passes through an output shaft of the motor, and the rotating tube is fixedly connected to the output shaft of the motor.

[0011] Specifically, the shell is in the shape of a cuboid, and the length direction of the shell is parallel to the radial direction of the kettle body.

[0012] Specifically, the lower end of the outlet pipe is fixedly and sealedly connected with a flange, and the sealing plate is fixedly and sealedly connected to the flange.

[0013] Specifically, an electric heating tube is fixed in the kettle.

[0014] Specifically, a cone net is fixed in the lower end of the kettle body, the cone net is concentric with the kettle body, a ring is fixed at the upper end of the cone net, a rotating pipe passes through the ring, the rotating pipe and the ring are rotatably sealed and connected, a through hole is opened on the bottom plate of the kettle body outside the cone net, and a discharge pipe is fixed in the through hole.

[0015] Specifically, the mesh number of the cone mesh is greater than the mesh number of the filter mesh.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model adds activated carbon into the shell through the rotating tube. When the shell is rotated by the rotating rod, the activated carbon in the shell can fully contact with the material, so the material can be decolorized.

[0018] 2. After decolorization is completed, the material can be discharged directly, and the activated carbon will not be discharged from the kettle. There is no need for subsequent screening of the material and activated carbon, which can improve the overall efficiency of the decolorization process.

[0019] 3. After opening the sealing cap at the lower end of the rotating tube, the activated carbon in the rotating tube and the shell can be discharged. Open the sealing cap at the upper end of the rotating tube, and keep the sealing cap at the lower end of the rotating tube to block the lower end of the rotating tube, and add new activated carbon into the shell and the rotating tube through the upper end of the rotating tube.

[0020] 4. After the decolorization is completed, the rotating tube drives the shell to rotate. Under the action of centrifugal force, the residual materials in the activated carbon can be thrown out, and the residual materials in the activated carbon can be effectively discharged.

[0021] 5. By setting the cone net, the cone net can intercept the small particles of activated carbon discharged from the shell, which can ensure the separation effect of the material and the activated carbon. And the small particles of activated carbon intercepted by the cone net can be easily discharged through the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top view of the kettle body.

[0023] Figure 2 for Figure 1 AA section view.

[0024] Figure 3 for Figure 1 Middle BB section view.

[0025] Figure 4 This is a schematic diagram of the connection between the output shaft of the motor and the rotating tube.

[0026] Figure 5 for Figure 4 Magnified view of area C.

[0027] The names of the parts in the attached drawings are:

[0028] 1 Kettle

[0029] 2 Inlet pipe

[0030] 3. Transfer tube

[0031] 4 Outlet

[0032] 5. Seal the board

[0033] 6 Connecting pipe

[0034] 7 Cap

[0035] 8 Housing

[0036] 9 Filter

[0037] 10 Flange

[0038] 11 Motor

[0039] 12. Pipe

[0040] 13 Cone Net

[0041] 14 Rings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0043] Example 1: Reference Figure 1-Figure 4 As shown, a decolorization kettle comprises a kettle body 1, in which an electric heating tube is fixed.

[0044] The upper end and the lower end of the kettle body 1 are respectively fixedly connected with an inlet pipe 2 and an outlet pipe 4, and the outlet pipe 4 is concentric with the kettle body 1.

[0045] The kettle body 1 is connected to a rotating tube 3 for coaxial rotation, and the upper end of the rotating tube 3 extends to the outside of the kettle body 1, and the upper part of the rotating tube 3 is connected to the kettle body 1 for rotation and sealing. The lower end of the outlet pipe 4 is fixedly and sealedly connected to a sealing plate 5. Specifically, the lower end of the outlet pipe 4 is fixedly and sealedly connected to a flange 10, and the sealing plate 5 is fixedly and sealedly connected to the flange 10. The lower end of the rotating tube 3 penetrates the sealing plate 5, and the rotating tube 3 is connected to the sealing plate 5 for rotation and sealing.

[0046] An annular gap is provided between the rotating pipe 3 and the outlet pipe 4 , and a connecting pipe 6 is fixedly connected to the outlet pipe 4 .

[0047] A plurality of shells 8 are fixedly connected to the rotating tube 3 in the kettle body 1, and openings are provided at both the front and rear ends of the shells 8, and filters 9 are fixed in the openings. Specifically, the shells 8 are rectangular parallelepiped, and the length direction of the shells 8 is parallel to the radial direction of the kettle body 1.

[0048] A driving device for driving the rotating tube 3 to rotate is fixed on the upper end of the kettle body 1. The driving device includes a motor 11, and the upper end of the rotating tube 3 passes through the output shaft of the motor 11, and the rotating tube 3 is fixedly connected to the output shaft of the motor 11.

[0049] The upper and lower ends of the rotating tube 3 are detachably fixed and sealed with sealing caps 7 .

[0050] Before work, open the sealing cap 7 at the upper end of the rotating tube 3 and keep the sealing cap 7 at the lower end of the rotating tube 3 sealed to the lower end of the rotating tube 3 , and add activated carbon into the shell 8 and the rotating tube 3 through the upper end of the rotating tube 3 .

[0051] Materials are added into the kettle body 1 through the inlet pipe 2, and the electric heating pipe is started to heat the materials in the kettle body 1. When the motor 11 drives the rotating pipe 3 and the shell 8 to rotate, the materials pass through the filter screen 9 and fully contact the activated carbon in the shell 8, and the activated carbon can be used to decolorize the materials.

[0052] After decolorization is completed, the material is discharged to the outside of the kettle body 1 through the gap between the rotating tube 3 and the outlet pipe 4 and the connecting pipe 6. Then the motor 11 is started to make the rotating tube 3 drive the shell 8 to rotate. Under the action of centrifugal force, the residual material in the activated carbon can be thrown out, and the residual material in the activated carbon can be effectively discharged.

[0053] When replacing the activated carbon, the activated carbon in the rotating tube 3 and the shell 8 can be discharged after opening the sealing cap 7 at the lower end of the rotating tube 3. The sealing cap 7 at the upper end of the rotating tube 3 is opened, and the sealing cap 7 at the lower end of the rotating tube 3 keeps sealing the lower end of the rotating tube 3, and new activated carbon can be added into the shell 8 and the rotating tube 3 through the upper end of the rotating tube 3.

[0054] Embodiment 2: Based on Embodiment 1, refer to Figure 4 and Figure 5 As shown, a cone net 13 is fixed in the lower end of the kettle body 1, the cone net 13 is concentric with the kettle body 1, and the mesh number of the cone net 13 is greater than the mesh number of the filter screen 9. A collar 14 is fixed at the upper end of the cone net 13, and the rotating tube 3 passes through the collar 14, and the rotating tube 3 is rotatably sealed and connected with the collar 14.

[0055] By providing the cone net 13, the cone net 13 can intercept small particles of activated carbon discharged from the shell 8, thereby ensuring the separation effect of the material and the activated carbon.

[0056] A through hole is provided on the bottom plate of the kettle body 1 outside the cone net 13, and a row pipe 12 is fixed in the through hole.

[0057] When it is necessary to discharge the small particles of activated carbon intercepted by the cone net 13 in the kettle body 1, close the connecting pipe 6, add water into the kettle body 1 and open the drain pipe 12. The water in the kettle body 1 can bring out the small particles of activated carbon intercepted by the cone net 13 during the process of flowing out of the drain pipe 12.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A decolorizing kettle, comprising a kettle body (1), wherein the upper end and the lower end of the kettle body (1) are respectively fixedly connected with an inlet pipe (2) and an outlet pipe (4), and the outlet pipe (4) is concentric with the kettle body (1), characterized in that: A rotating tube (3) is coaxially connected to the kettle body (1), the upper end of the rotating tube (3) extends to the outside of the kettle body (1), the upper part of the rotating tube (3) is connected to the kettle body (1) in a rotatable and sealed manner, the lower end of the outlet pipe (4) is fixedly connected to a sealing plate (5), the lower end of the rotating tube (3) passes through the sealing plate (5), the rotating tube (3) and the sealing plate (5) are connected in a rotatable and sealed manner, an annular gap is provided between the rotating tube (3) and the outlet pipe (4), a connecting tube (6) is fixedly connected to the outlet pipe (4), a plurality of shells (8) are fixedly connected to the rotating tube (3) in the kettle body (1), both front and rear ends of the shells (8) are provided with openings, and filter screens (9) are fixed in the openings, a driving device for driving the rotating tube (3) to rotate is fixed to the upper end of the kettle body (1), and the upper and lower ends of the rotating tube (3) are both detachably fixedly connected to sealing caps (7).

2. A decolorizing kettle according to claim 1, characterized in that: The driving device comprises a motor (11), the upper end of the rotating tube (3) passes through the output shaft of the motor (11), and the rotating tube (3) is fixedly connected to the output shaft of the motor (11).

3. A decolorizing kettle according to claim 1, characterized in that: The shell (8) is in the shape of a rectangular parallelepiped, and the length direction of the shell (8) is parallel to the radial direction of the kettle body (1).

4. A decolorizing kettle according to claim 1, characterized in that: The lower end of the outlet pipe (4) is fixedly and sealingly connected to a flange (10), and the sealing plate (5) is fixedly and sealingly connected to the flange (10).

5. A decolorizing kettle according to claim 1, characterized in that: An electric heating tube is fixed inside the kettle body (1).

6. A decolorizing kettle according to claim 1, characterized in that: A cone net (13) is fixed inside the lower end of the kettle body (1), the cone net (13) is concentric with the kettle body (1), a collar (14) is fixed on the upper end of the cone net (13), a rotating tube (3) passes through the collar (14), the rotating tube (3) and the collar (14) are rotatably sealed and connected, a through hole is opened on the bottom plate of the kettle body (1) outside the cone net (13), and a discharge pipe (12) is fixed in the through hole.

7. A decolorizing kettle according to claim 6, characterized in that: The mesh number of the cone mesh (13) is greater than the mesh number of the filter mesh (9).

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