Synthesis kettle for synthesizing short B-axis ZSM-5 molecular sieve

Abstract

The utility model discloses a synthesis kettle for synthesizing a short B-axis ZSM-5 molecular sieve, and relates to the technical field of molecular sieve preparation, the synthesis kettle comprises a kettle body and a stirring device, the upper part of a stirring shaft in the kettle body is fixedly provided with a circular ring-shaped material uniformizing groove, the peripheral surface of the material uniformizing groove is fixedly provided with a plurality of blanking grooves which are gradually inclined from the inner end to the outer end, and the blanking grooves are communicated with the stirring device. The interior of the material falling groove is communicated with the interior of the material uniformizing groove, a plurality of material falling openings are formed in the lower surface of the material uniformizing groove, an annular material uniformizing pipe used for filling liquid materials is fixedly installed on the upper portion in the kettle body, and a plurality of discharging nozzles are fixedly installed on the lower portion of the material uniformizing pipe. According to the utility model, the purpose of uniformly feeding powder and liquid materials can be realized, so that the materials cannot be piled and gathered in the kettle body and can be scattered into the kettle body more dispersedly, thereby improving the uniformity and dispersity of feeding, shortening the time required by stirring to a certain extent, and further improving the overall stirring synthesis efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular sieve preparation, in particular to a synthesis kettle for synthesizing short B-axis ZSM-5 molecular sieve. Background Art

[0002] As one of the most common zeolite molecular sieves, ZSM-5 zeolite molecular sieve has excellent ion exchange and separation adsorption properties. In addition, its unique cross-channel structure, adjustable acidity and hydrothermal stability give it excellent shape-selective catalytic performance and is widely used in many fields such as petrochemicals, coal chemicals, fine chemicals and environmental protection. In recent years, ZSM-5 zeolite molecular sieves have been widely used in catalytic reactions such as methanol to aromatics, synthesis gas and carbon dioxide conversion to aromatics, and the synthesis and preparation of ZSM-5 zeolite molecular sieves mostly use molecular sieve synthesis reactors.

[0003] A molecular sieve synthesis kettle disclosed in the prior art CN 221046075 U includes a kettle body, a supporting feeding mechanism, and a stirring and cleaning mechanism. Although the synthesis kettle sends the pH and temperature in the kettle to the data display screen via a data line through an acid-base temperature monitor, the material in the kettle can be adjusted in time, which is beneficial to improving the quality of molecular sieve production, and the impurities in the synthesis kettle are cleaned by a high-pressure water pump, an ultrasonic vibration plate, and a cleaning nozzle, which can facilitate the improvement of the quality of subsequent molecular sieve production, but when the powder and liquid materials are added to the synthesis kettle and the traditional molecular sieve synthesis kettle, the materials are directly added into the kettle body through the feeding port, resulting in excessive aggregation of the materials in the kettle body, insufficient dispersion, and insufficient uniformity. In this case, it is necessary to stir the materials for a certain period of time to disperse them, which will undoubtedly increase the time required for the entire stirring work, thereby increasing the overall synthesis preparation time and affecting the efficiency of processing and preparation. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieves, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical scheme: a synthesis kettle for synthesizing short B-axis ZSM-5 molecular sieve, including a kettle body and a stirring device, the stirring device including a stirring shaft installed inside the kettle body, a circular ring-shaped material mixing groove is fixedly installed on the upper part of the stirring shaft located inside the kettle body, a plurality of material dropping grooves gradually inclined from the inner end to the outer end are fixedly installed on the outer peripheral surface of the material mixing groove, the interior of the material dropping groove is connected with the interior of the material mixing groove, a plurality of material dropping ports are opened on the lower surface of the material dropping groove, a circular ring-shaped material mixing pipe for adding liquid material is fixedly installed on the upper part of the kettle body, and a plurality of discharge nozzles are fixedly installed on the lower part of the material mixing pipe.

[0008] Optionally, a powder storage bin is installed on the upper side of the kettle body, a sealing cover is installed on the upper part of the powder storage bin, a conduit connected to the interior of the powder storage bin is installed on the lower part of the powder storage bin, the conduit is plugged and fixed to the upper part of the kettle body, the lower end of the conduit extends to the interior of the material mixing trough, and the lower end of the conduit is wedge-shaped.

[0009] Optionally, the inner bottom wall of the annular material mixing groove gradually inclines from inside to outside along the radial direction, and the material mixing groove is coaxial with the stirring shaft.

[0010] Optionally, a plurality of the material delivery troughs are distributed in a circular array along the axis of the stirring shaft, and a plurality of the material delivery openings are distributed equidistantly in a linear array along the length direction of the material delivery trough.

[0011] Optionally, the annular material mixing pipe is provided with a liquid outlet end of an angle valve, and the liquid inlet end of the angle valve is provided with a material injection pipe for injecting liquid material.

[0012] Optionally, a plurality of the discharge nozzles are distributed in a ring array along the axis of the annular material mixing pipe, and the discharge nozzles are gradually inclined downward from outside to inside along the radial direction of the annular material mixing pipe.

[0013] Optionally, the stirring device further comprises a stirring motor installed above the kettle body, the output end of the stirring motor is connected to the stirring shaft via a coupling, and a stirring blade is installed on the stirring shaft below the material mixing tank.

[0014] Optionally, a discharge port is provided at the lower portion of the kettle body, a discharge valve is installed on the discharge port, and a support frame is installed on the outer periphery of the lower portion of the kettle body.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effect of the utility model is that powder and liquid materials can be added to the kettle more evenly, so as to achieve the purpose of uniform feeding of powder and liquid materials, so that the materials will not be piled up in the kettle, but will be scattered into the kettle more dispersedly, thereby improving the uniformity and dispersion of feeding, making it easier to stir and mix the materials, and reducing the time required for stirring to a certain extent, thereby improving the overall stirring and synthesis efficiency, which is beneficial to the overall preparation and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the partial structure of the utility model in front view and section;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the material leveling trough of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the material leveling trough of the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the material mixing pipe of the utility model from the front view.

[0022] In the figure: 1. kettle body; 101. support frame; 2. stirring device; 201. stirring motor; 202. stirring shaft; 203. stirring blade; 3. discharge valve; 4. powder storage bin; 5. sealing cover; 6. guide tube; 7. material mixing trough; 8. material dropping trough; 801. material dropping port; 9. material mixing pipe; 10. discharge nozzle; 11. angle valve; 12. injection pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figures 1 to 4The first embodiment of a synthesis kettle for synthesizing short B-axis ZSM-5 molecular sieve shown in the figure comprises a kettle body 1 and a stirring device 2, wherein the stirring device 2 comprises a stirring shaft 202 installed inside the kettle body 1, and a circular material mixing groove 7 is fixedly installed on the upper part of the stirring shaft 202 located inside the kettle body 1, and the inner bottom wall of the circular material mixing groove 7 gradually inclines from the inside to the outside along the radial direction, and the material mixing groove 7 is coaxial with the stirring shaft 202, and the outer peripheral surface of the material mixing groove 7 is fixedly installed with four blanking grooves 8 gradually inclining from the inner end to the outer end, and the interior of the blanking groove 8 is connected to the interior of the material mixing groove 7, and the blanking groove 8 The lower surface of the kettle 1 is provided with three feeding openings 801, and the four feeding troughs 8 are distributed in a circular array along the axis of the stirring shaft 202, and the three feeding openings 801 are distributed in a linear array equidistantly along the length direction of the feeding trough 8. A powder storage bin 4 is installed on the upper side of the kettle body 1, and a sealing cover 5 is installed on the upper part of the powder storage bin 4. A conduit 6 connected with the interior of the powder storage bin 4 is installed at the lower part of the powder storage bin 4. The conduit 6 is plugged and fixed to the upper part of the kettle body 1, and the lower end of the conduit 6 extends to the interior of the mixing trough 7, and the lower end of the conduit 6 is wedge-shaped, and the wedge-shaped inclined surface of the lower end of the conduit 6 faces the stirring shaft 202;

[0025] The stirring device 2 further comprises a stirring motor 201 installed above the kettle body 1, the output end of the stirring motor 201 is connected to a stirring shaft 202 via a coupling, and a stirring blade 203 is installed on the stirring shaft 202 below the material mixing tank 7;

[0026] A discharge port is provided at the lower part of the kettle body 1, and a discharge valve 3 is installed on the discharge port. After the reaction is completed, the discharge valve 3 can be opened to discharge the molecular sieve in the kettle body 1, and a support frame 101 is installed on the lower periphery of the kettle body 1.

[0027] When in use, after opening the sealing cover 5, a certain amount of powder is added into the powder storage bin 4, and then the sealing cover 5 is closed. The powder in the powder storage bin 4 will fall into the mixing tank 7 through the conduit 6 under the action of gravity. At the same time, the stirring motor 201 is started to drive the stirring shaft 202 and the stirring blade 203 to rotate and stir the materials in the kettle body 1. The rotation of the stirring shaft 202 will also drive the mixing tank 7 to rotate synchronously around its axis. The powder in the conduit 6 will gradually fall into the mixing tank 7. Moreover, under the centrifugal force of the rotation of the mixing tank 7 and the inclined inner bottom wall of the mixing tank 7, the powder falling into the mixing tank 7 slides outward and slides into the blanking tank 8, while the powder that has not entered the blanking tank 8 will slide into the blanking tank 8 under the action of the lower end of the conduit 6. The powder entering the blanking tank 8 will eventually be evenly sprinkled into the kettle body 1 through the blanking port 801 and the outer end of the blanking tank 8, thereby achieving the purpose of uniformly feeding the liquid material.

[0028] The utility model provides Figure 1 , Figure 2 and Figure 5Example 2 of a synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve shown:

[0029] A circular mixing pipe 9 for adding liquid material is fixedly installed on the upper part of the kettle body 1, and the liquid outlet end of an angle valve 11 is installed on the circular mixing pipe 9. A filling pipe 12 for adding liquid material is installed on the liquid inlet end of the angle valve 11. The other end of the filling pipe 12 is connected to a liquid material filling pump (the filling pump is not shown in the figure). Four discharge nozzles 10 are fixedly installed on the lower part of the mixing pipe 9. The four discharge nozzles 10 are distributed in a circular array along the axis of the circular mixing pipe 9, and the discharge nozzles 10 gradually tilt downward from the outside to the inside along the radial direction of the circular mixing pipe 9.

[0030] When in use, the external filling pump transports the liquid material into the injection pipe 12, and transports it to the annular material mixing pipe 9 through the angle valve 11, and then the liquid material is dispersed and transported to the interior of the kettle body 1 along the circular direction by the material mixing pipe 9, and finally discharged evenly to various positions in the kettle body 1 through four discharge nozzles 10, thereby achieving the purpose of uniform loading of the liquid material.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve, comprising a reactor body (1) and a stirring device (2), wherein the stirring device (2) comprises a stirring shaft (202) installed inside the reactor body (1), characterized in that: A circular material mixing groove (7) is fixedly installed on the upper part of the stirring shaft (202) located inside the kettle body (1), and a plurality of material dropping grooves (8) which are gradually inclined from the inner end to the outer end are fixedly installed on the outer peripheral surface of the material mixing groove (7). The interior of the material dropping groove (8) is connected to the interior of the material mixing groove (7), and a plurality of material dropping openings (801) are opened on the lower surface of the material dropping groove (8). A circular material mixing pipe (9) for adding liquid material is fixedly installed on the upper part of the kettle body (1), and a plurality of material discharge nozzles (10) are fixedly installed on the lower part of the material mixing pipe (9).

2. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: A powder material storage bin (4) is installed on the upper side of the kettle body (1), a sealing cover (5) is installed on the upper part of the powder material storage bin (4), a conduit (6) connected to the interior of the powder material storage bin (4) is installed on the lower part of the powder material storage bin (4), the conduit (6) is plugged and fixed to the upper part of the kettle body (1), the lower end of the conduit (6) extends to the interior of the material mixing trough (7), and the lower end of the conduit (6) is wedge-shaped.

3. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The inner bottom wall of the annular material mixing groove (7) is gradually inclined from the inside to the outside along the radial direction, and the material mixing groove (7) is coaxial with the stirring shaft (202).

4. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The plurality of material dropping grooves (8) are distributed in a circular array along the axis of the stirring shaft (202), and the plurality of material dropping openings (801) are distributed in a linear array at equal intervals along the length direction of the material dropping groove (8).

5. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The annular material mixing pipe (9) is provided with a liquid outlet end of an angle valve (11), and a material injection pipe (12) for injecting liquid material is provided at a liquid inlet end of the angle valve (11).

6. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The plurality of discharge nozzles (10) are distributed in a ring array along the axis of the annular material mixing pipe (9), and the discharge nozzles (10) are gradually inclined downward from outside to inside along the radial direction of the annular material mixing pipe (9).

7. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The stirring device (2) further comprises a stirring motor (201) installed above the kettle body (1); the output end of the stirring motor (201) is connected to a stirring shaft (202) via a coupling; a stirring blade (203) is installed on the stirring shaft (202) below the material mixing tank (7).

8. The synthesis reactor for synthesizing short B-axis ZSM-5 molecular sieve according to claim 1, characterized in that: The lower part of the kettle body (1) is provided with a discharge port, a discharge valve (3) is installed on the discharge port, and a support frame (101) is installed on the outer periphery of the lower part of the kettle body (1).

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