Crystallization kettle for synthesizing ZSM-5 molecular sieve

Abstract

The utility model relates to the technical field of crystallization kettles, in particular to a crystallization kettle for synthesizing a ZSM-5 molecular sieve, which comprises a kettle body, and the kettle body comprises a kettle body and a kettle cover; a liquid supply part is arranged below the kettle body; a hollow ring body is fixed between the tail ends of the two bent pipes; a spray head for spraying a water source to clean the interior of the kettle body is mounted on the outer wall of the ring body; after a ZSM-5 molecular sieve is synthesized in the kettle body, a cooling water source is conveyed into the kettle body by a water pump through a drain pipe and a cooling pipe, and the cooling water source can continuously take away heat of a reactant while continuously flowing because the reactant immersed in the kettle body is cooled, so that the cooling speed of the reactant in the kettle body can be increased by the design, and the crystallization efficiency of the crystallization kettle is improved. The efficiency of synthesizing the ZSM-5 molecular sieve is improved; through the bent pipe, the spray head and the like, after the crystallization kettle is used, the spray head sprays a water source to the inner wall of the kettle body for washing, and under the action of the water source, the interior of the kettle body can be quickly cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization kettles, in particular to a crystallization kettle for synthesizing ZSM-5 molecular sieves. Background Art

[0002] ZSM-5 molecular sieve, also known as Zeolite Socony Mobil–5, is a new type of zeolite molecular sieve containing organic amine cations. ZSM-5 molecular sieve is mostly used as a catalyst, such as a para-diethylbenzene catalyst and a xylene isomerization catalyst. The crystallization reactor is a device used for solution crystal growth and purification. In the process of synthesizing ZSM-5 molecular sieve, the crystallization reactor is one of the key equipment used to provide the appropriate temperature and pressure environment required for crystal growth.

[0003] The utility model patent with the authorization announcement number CN212328309U discloses a large-scale equipment for the selective molecular sieve gel crystallization kettle, which includes a stirring device and an inner kettle body; the stirring device is a vertical stirring structure, which is connected from top to bottom by a motor, an upper transmission sealing assembly with a balance tank, a coupling assembly and a stirring assembly; the stirring assembly is a three-layer four-slant blade turbine stirring paddle, and the bottom stirring paddle is close to the bottom of the inner kettle body; the inner kettle body is composed of an upper elliptical The head, the straight cylinder section and the lower elliptical head are connected to form a structure; the top of the upper elliptical head is respectively provided with a feed port and an exhaust port, and the bottom is provided with a discharge port; the interior of the straight cylinder section is provided with a heating coil placed on a coil support, and the heating coil has 8 to 11 turns and spirals upward in the circumferential direction; the stirring assembly in the utility model is a three-layer four-oblique blade turbine stirring paddle with radial and axial liquid drainage functions; the bottom layer of stirring paddles is close to the bottom of the inner kettle body, which ensures strong shear force and uniform mixing of solid and liquid while reducing the deposition of crystallized matter at the bottom of the kettle.

[0004] Although the large-scale equipment of the selective molecular sieve gel crystallization kettle reduces the deposition of crystallized products at the bottom of the kettle, the device still has the following problems in actual use: after the reaction is completed, the reactants in the kettle are still in a high-temperature and high-pressure state. Since the crystallization kettle is not equipped with a cooling structure, the natural cooling of the reactants requires a long time, which affects the processing efficiency of the crystallization kettle. In view of this, we propose a crystallization kettle for synthesizing ZSM-5 molecular sieve. Utility Model Content

[0005] The present invention aims to at least partially address one of the technical problems in the related art. To this end, one objective of the present invention is to provide a crystallization kettle for synthesizing ZSM-5 molecular sieves, wherein cooling water is pumped into the kettle via a drain pipe and a cooling pipe. The continuous flow of cooling water continuously removes heat from the reactants.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A crystallization kettle for synthesizing ZSM-5 molecular sieves comprises a kettle body, which comprises a kettle body and a kettle cover; a stirring shaft is rotatably mounted inside the kettle body, and a plurality of stirring blades are coaxially keyed to the outer wall of the stirring shaft; a plurality of electric heating blocks are fixed to the inner bottom of the kettle body; and a motor for driving the stirring shaft to rotate is mounted on the top of the kettle cover;

[0008] A liquid supply part is provided at the bottom of the kettle body, which includes a water tank, a water inlet chamber inside the water tank, and a drainage chamber on the top of the water inlet chamber; water pumps are installed on both sides of the bottom of the water inlet chamber, and a drainage pipe is installed at the liquid outlet of the water pump. The top of the drainage pipe passes through the top of the water tank, and a three-way valve is installed at the top of the drainage pipe. A cooling pipe is installed at one of the outlets of the three-way valve, and the end of the cooling pipe passes through the kettle body and out from the bottom of the kettle body, and the end of the cooling pipe is connected to the drainage chamber; a bent pipe is installed at the other outlet of the three-way valve, and the top of the bent pipe passes through the kettle cover and penetrates into the kettle body. A hollow ring body is fixed between the ends of the two bent pipes, and a nozzle for spraying water to clean the inside of the kettle body is installed on the outer wall of the ring body.

[0009] In addition, the crystallization reactor for synthesizing ZSM-5 molecular sieves proposed in the application may also have the following additional technical features:

[0010] Specifically, a discharge pipe is installed at the bottom of the kettle body, and a valve is installed outside the discharge pipe.

[0011] Specifically, two fixing plates are provided above the water tank, and the kettle body passes through the openings of the fixing plates and is fixedly connected to the fixing plates by bolts; support rods are fixed at the four corners of the fixing plates by bolts, and the bottom ends of the support rods are fixedly connected to the water tank by bolts.

[0012] Specifically, a drainage pipe communicating with the drainage chamber is installed on the front end surface of the water tank, and a water supply pipe is installed at the bottom end of the left end surface of the water tank.

[0013] Specifically, a feeding port is installed on the top of the kettle cover, and a sealing cover is threadedly connected to the opening of the feeding port.

[0014] Specifically, the overall shape of the cooling pipe is wavy, and the cooling pipe is made of stainless steel.

[0015] Specifically, the overall shape of the ring body is annular, and the multiple nozzles are distributed in annular shape with equal intervals.

[0016] Specifically, the stirring blades are fixedly connected to the stirring shaft by bolts, and the plurality of stirring blades are linearly and evenly spaced in the vertical direction.

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

[0018] 1. Through the kettle body and liquid supply part: After the ZSM-5 molecular sieve is synthesized in the kettle body, the cooling water source is transported to the kettle body through the drain pipe and the cooling pipe by the water pump. Since the reactants immersed in the kettle body are cooled, the cooling water source continuously flows and continuously removes the heat of the reactants. This design can increase the cooling rate of the reactants in the kettle body and improve the efficiency of synthesizing ZSM-5 molecular sieve in the crystallization kettle;

[0019] 2. Through the provided bend pipe and nozzle, etc., after the crystallization kettle is used, the nozzle sprays water to the inner wall of the kettle body for flushing. Under the action of the water source, the inside of the kettle body can be quickly cleaned. This design facilitates the cleaning of the inside of the crystallization kettle and has the advantages of easy operation and good cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the water tank in the utility model;

[0023] Figure 4 This is a structural sectional view of the kettle body in the utility model;

[0024] Figure 5 It is a partial structural diagram of the liquid supply part in the utility model;

[0025] In the picture:

[0026] 1. Kettle body; 10. Kettle body; 11. Kettle cover; 110. Feeding port; 12. Motor; 13. Stirring shaft; 130. Stirring blade; 14. Discharge pipe; 140. Valve; 15. Support rod; 16. Fixing plate; 17. Electric heating block;

[0027] 2. Liquid supply unit; 20. Water tank; 200. Drain chamber; 201. Water inlet chamber; 203. Drain pipe; 204. Water supply pipe; 21. Water pump; 22. Drain pipe; 23. Three-way valve; 24. Elbow; 25. Ring body; 250. Nozzle; 26. Cooling pipe. DETAILED DESCRIPTION

[0028] 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.

[0029] This embodiment provides a technical solution:

[0030] See also Figure 1-Figure 5 As shown, a crystallization kettle for synthesizing ZSM-5 molecular sieve comprises a kettle body 1, which comprises a kettle body 10 and a kettle cover 11; a stirring shaft 13 is rotatably installed inside the kettle body 10, and a plurality of stirring blades 130 are coaxially keyed to the outer wall of the stirring shaft 13; a plurality of electric heating blocks 17 are fixed to the inner bottom of the kettle body 10; a motor 12 for driving the stirring shaft 13 to rotate is installed on the top of the kettle cover 11; a liquid supply part 2 is provided below the kettle body 1, and the liquid supply part 2 comprises a water tank 20, a water inlet chamber 201 is provided inside the water tank 20, and a drainage chamber 200 is provided on the top of the water inlet chamber 201; a water pump 21 is installed on both the left and right sides of the bottom of the water inlet chamber 201, and the water pump 21 is driven by a motor 12 for driving the stirring shaft 13 to rotate. A drain pipe 22 is installed at the liquid outlet, and the top of the drain pipe 22 passes through the top of the water tank 20. A three-way valve 23 is installed at the top of the drain pipe 22. A cooling pipe 26 is installed at one of the outlets of the three-way valve 23. The end of the cooling pipe 26 passes through the kettle body 10 and passes out from the bottom of the kettle body 10, and the end of the cooling pipe 26 is connected to the drain chamber 200; a bend pipe 24 is installed at the other outlet of the three-way valve 23, and the top of the bend pipe 24 passes through the kettle cover 11 and passes into the kettle body 10. A hollow ring body 25 is fixed between the ends of the two bends 24, and a nozzle 250 for spraying water to clean the inside of the kettle body 10 is installed on the outer wall of the ring body 25.

[0031] In this embodiment, a discharge pipe 14 is installed at the bottom of the kettle body 10, and a valve 140 is installed outside the discharge pipe 14. The discharge pipe 14 is provided to facilitate the discharge of the reactants in the kettle body 1, and the valve 140 is provided to facilitate the control of the discharge.

[0032] In this embodiment, two fixing plates 16 are provided above the water tank 20. The kettle body 10 passes through the openings of the fixing plates 16 and is fixedly connected to the fixing plates 16 by bolts. Support rods 15 are fixed to the four corners of the fixing plates 16 by bolts, and the bottom ends of the support rods 15 are fixedly connected to the water tank 20 by bolts. The fixing plates 16 and support rods 15 provide stable support and fixation for the kettle body 1.

[0033] In this embodiment, a drain pipe 203 is mounted on the front end of the water tank 20, communicating with the drain chamber 200. A water supply pipe 204 is mounted at the bottom of the left end of the water tank 20. The drain pipe 203 facilitates draining the hot water in the drain chamber 200, while the water supply pipe 204 replenishes water into the water inlet chamber 201.

[0034] In this embodiment, a feeding port 110 is installed at the top of the kettle cover 11, and a sealing cover is threadedly connected to the opening of the feeding port 110. The setting of the feeding port 110 facilitates the addition of raw materials, and the sealing cover ensures the sealing of the kettle body 1.

[0035] In this embodiment, the cooling tube 26 is wavy in shape and is made of stainless steel. This wavy design increases the travel of the cooling water within the cooling tube 26, thereby facilitating the cooling water's movement and better absorbing heat from the reactants to cool them. Stainless steel is corrosion-resistant and strong, ensuring the longevity of the cooling tube 26.

[0036] In this embodiment, the ring body 25 is annular in shape, and the plurality of nozzles 250 are distributed in an annular pattern at equal intervals. The plurality of nozzles 250 facilitates spraying water onto the inner walls of the kettle body 10 at the same time, thereby ensuring a cleansing effect on the interior of the kettle body 10.

[0037] In this embodiment, the stirring blades 130 are fixedly connected to the stirring shaft 13 by bolts, and the plurality of stirring blades 130 are linearly and evenly spaced in the vertical direction. The bolted fixing method ensures the installation reliability of the stirring blades 130, and the plurality of stirring blades 130 ensures the stirring and mixing effect of the reactants.

[0038] It should be added that the stirring blade 130 in this embodiment is located at the bend of the cooling tube 26. This design ensures that the presence of the cooling tube 26 does not hinder the rotation of the stirring blade 130, so that both can maintain normal use.

[0039] It is worth noting that the motor 12 involved in this embodiment is an existing conventional technology and will not be described in detail here.

[0040] When cooling the interior of the kettle body 1, the user first operates the three-way valve 23, and the drain pipe 22 is connected to the cooling pipe 26. Then the user turns on the power of the water pump 21, and the water pump 21 starts to work. The water in the water inlet chamber 201 enters the drain pipe 22, and the water enters the cooling pipe 26 through the drain pipe 22. While flowing in the cooling pipe 26, the water takes away the heat of the reactants in the kettle body 1. Finally, the hot water enters the drain chamber 200 through the cooling pipe 26. As the water continues to flow, the heat of the reactants in the kettle body 1 is reduced.

[0041] When cleaning the inside of the kettle body 1, the user first operates the three-way valve 23, and the drain pipe 22 is connected to the elbow 24. Then the user turns on the power of the water pump 21, and the water pump 21 starts to work. The water source in the water inlet chamber 201 enters the drain pipe 22, and the water source enters the elbow 24 through the drain pipe 22. At the same time, the water source enters the ring body 25 and is sprayed on the inner wall of the kettle body 10 through multiple nozzles 250. Under the flushing of the water source, the attachments adhering to the inner wall of the kettle body 10 are cleaned, and finally the sewage is discharged to the outside through the discharge pipe 14.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A crystallization kettle for synthesizing ZSM-5 molecular sieve, comprising a kettle body (1), characterized in that: The kettle body (1) comprises a kettle body (10) and a kettle cover (11); a stirring shaft (13) is rotatably mounted inside the kettle body (10), and a plurality of stirring blades (130) are coaxially keyed to the outer wall of the stirring shaft (13); a plurality of electric heating blocks (17) are fixed to the inner bottom of the kettle body (10); a motor (12) for driving the stirring shaft (13) to rotate is mounted on the top of the kettle cover (11); A liquid supply part (2) is provided below the kettle body (1), and the liquid supply part (2) includes a water tank (20), a water inlet chamber (201) is provided inside the water tank (20), and a drainage chamber (200) is provided on the top of the water inlet chamber (201); a water pump (21) is installed on both the left and right sides of the bottom of the water inlet chamber (201), a drainage pipe (22) is installed at the liquid outlet of the water pump (21), the top end of the drainage pipe (22) passes through the top end of the water tank (20), a three-way valve (23) is installed at the top end of the drainage pipe (22), and a valve (23) is installed at one of the outlets of the three-way valve (23). A cooling pipe (26) is installed, the end of the cooling pipe (26) penetrates into the kettle body (10) and passes out from the bottom of the kettle body (10), and the end of the cooling pipe (26) is connected to the drainage chamber (200); a bend pipe (24) is installed at the other outlet of the three-way valve (23), the top end of the bend pipe (24) passes through the kettle cover (11) and penetrates into the kettle body (10), a hollow ring body (25) is fixed between the ends of the two bend pipes (24), and a nozzle (250) for spraying water to clean the inside of the kettle body (10) is installed on the outer wall of the ring body (25).

2. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: A discharge pipe (14) is installed at the bottom of the kettle body (10), and a valve (140) is installed outside the discharge pipe (14).

3. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: Two fixing plates (16) are provided above the water tank (20), and the kettle body (10) passes through the openings of the fixing plates (16) and is fixedly connected to the fixing plates (16) by bolts; support rods (15) are fixed at the four corners of the fixing plates (16) by bolts, and the bottom ends of the support rods (15) are fixedly connected to the water tank (20) by bolts.

4. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: A drainage pipe (203) communicating with the drainage chamber (200) is installed on the front end surface of the water tank (20), and a water supply pipe (204) is installed at the bottom end of the left end surface of the water tank (20).

5. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: A feeding port (110) is installed at the top end of the kettle cover (11), and a sealing cover is threadedly connected to the opening of the feeding port (110).

6. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: The overall shape of the cooling pipe (26) is wavy, and the cooling pipe (26) is a product made of stainless steel.

7. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: The overall shape of the ring body (25) is annular, and the plurality of nozzles (250) are distributed in an annular shape at equal intervals.

8. The crystallization kettle for synthesizing ZSM-5 molecular sieve according to claim 1, characterized in that: The stirring blades (130) are fixedly connected to the stirring shaft (13) via bolts, and the plurality of stirring blades (130) are linearly and evenly spaced in the vertical direction.

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