Drying equipment for ZSM-5 molecular sieve preparation

Abstract

The utility model discloses drying equipment for ZSM-5 molecular sieve preparation, which comprises a fluidization chamber, a feed hopper arranged at the left end of the fluidization chamber, a first motor, a second motor, a material guide plate and a material distribution roller, a discharge port arranged at the right end of the fluidization chamber, a bed layer communicated with gas arranged in the fluidization chamber, the material guide plate positioned below the feed hopper, the material guide plate is arranged obliquely, and the material distribution roller is arranged below the feed hopper. The first motor is vertically and fixedly connected outside the fluidization chamber, the output end of the first motor penetrates through the fluidization chamber and the material guide plate and extends into the feeding hopper, the output end of the first motor is provided with a crushing blade, the material distribution roller is horizontally located on the right portion of the lower portion of the material guide plate, the material distribution roller is provided with augers opposite in spiral direction, and a gap is formed between the material distribution roller and the bed layer. The second motor drives the material distributing roller to rotate. According to the utility model, plate materials are crushed and separated, the drying effect on the materials is improved, and the device is more suitable for drying molecular sieves.

Description

Technical Field

[0001] The utility model relates to the technical field of drying, in particular to a drying device for preparing ZSM-5 molecular sieve. Background Art

[0002] ZSM-5 molecular sieve is a kind of synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. In the production process of molecular sieve, raw materials are first put into a crystallization kettle for crystallization reaction, then excessive water is added to make a slurry, after washing with water, dehydration is carried out through a plate and frame filter press, and finally drying is carried out using a fluidized bed to obtain the product. After dehydration by the plate and frame filter press, ZSM-5 molecular sieve is easy to agglomerate into blocks. When put into a traditional fluidized bed dryer, such as a vibrating fluidized bed dryer disclosed in Patent CN201320757497.2, since this dryer does not have a crushing function before feeding, the agglomerated molecular sieve will accumulate in the middle of the feeding end of the bed layer, and the dispersion and spreading speed is slower during the subsequent vibration transmission process, reducing the drying effect. At the same time, the water absorption of molecular sieve is stronger than that of ordinary powdery materials, and the superposition of the two makes the final drying effect worse than that of ordinary powder materials. Therefore, it is necessary to improve the existing fluidized bed dryer to improve its drying capacity. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a drying device for preparing ZSM-5 molecular sieve with good drying effect.

[0004] The purpose of the utility model is realized by the following technical solutions: A drying device for preparing ZSM-5 molecular sieve, including a fluidization chamber, a feeding hopper, a first motor, a second motor, a guiding plate and a distributing roller are arranged at the left end of the fluidization chamber, a discharging port is arranged at the right end of the fluidization chamber, a gas-permeable bed layer is arranged inside the fluidization chamber, the guiding plate is located below the feeding hopper, the guiding plate is inclined, the first motor is vertically fixedly connected outside the fluidization chamber, the output end of the first motor passes through the fluidization chamber, the guiding plate and extends into the feeding hopper, a crushing blade is arranged at the output end of the first motor, the distributing roller is horizontally located at the lower right of the guiding plate, augers with opposite spiral directions are arranged on the distributing roller, a gap is arranged between the distributing roller and the bed layer, and the second motor drives the distributing roller to rotate.

[0005] Furthermore, a plurality of air guide pipes are arranged on the bed layer, the air guide pipes are located above the bed layer, the air guide pipes are perpendicular to the bed layer and evenly spaced, the air guide pipes communicate with the space below the bed layer, a plurality of first air guide elbows are arranged on the air guide pipes, one end of the first air guide elbow communicates with the air guide pipe, and the other end of the first air guide elbow is horizontally arranged and is located between the air guide pipe and the bed layer.

[0006] Further, a second air guiding elbow is provided on the air guiding pipe. One end of the second air guiding elbow communicates with the air guiding pipe, and the other end of the second air guiding elbow is horizontally arranged. The second air guiding elbow is located between the air guiding pipe and the bed layer, and the gases ejected from the first air guiding elbow and the second air guiding elbow are in different directions.

[0007] Further, the first air guiding elbow and the second air guiding elbow are respectively vertically oriented towards the side surface of the bed layer, and the air guiding pipe is located behind the material distributing roller.

[0008] The present utility model has the following advantages: By providing blades below the feed hopper, the falling block-shaped materials can be broken. At the same time, through the cooperation of the material guiding plate and the material distributing roller, the broken and accumulated materials can be quickly spread on the bed layer, shortening the spreading time and accelerating the drying of the overall materials by the hot air below; By providing the first air guiding elbow and the second air guiding elbow behind the material distributing roller, not only can the materials be spread towards both sides more quickly, but also the discharged hot air can heat the materials from the side. Cooperating with the hot air ejected from the bottom, drying of the material surface from multiple angles is achieved, improving the overall fluidized drying capacity and being more suitable for drying and baking molecular sieves. Description of the Drawings

[0009] Figure 1 is the overall structural schematic diagram of the present utility model;

[0010] Figure 2 is Figure 1 the sectional structural schematic diagram at A in

[0011] Figure 3 is Figure 2 the sectional structural schematic diagram at B in

[0012] In the figure, 1, fluidized chamber; 2, buffer spring; 3, feed hopper; 4, discharge port; 5, air inlet; 6, vibration motor; 7, air outlet; 8, first motor; 9, second motor; 10, bed layer; 11, material guiding plate; 12, blade; 13, material distributing roller; 14, air guiding pipe; 15, first air guiding elbow; 16, second air guiding elbow. Detailed Embodiments

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0015] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected" and "coupled" should be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] Such as Figures 1 to 3As shown, a drying device for preparing ZSM-5 molecular sieve includes a fluidization chamber 1. The bottom of the fluidization chamber 1 is supported by installing buffer springs 2. Multiple air inlets 5 are opened on the side of the bottom of the fluidization chamber 1. The air inlets 5 are connected to the hot air outside through flexible pipes. The top of the fluidization chamber 1 is connected to an external dust collector through an air outlet 7 in a flexible manner. A vibrating motor 6 is installed on the side of the fluidization chamber 1 for vibrating and feeding materials. A feed hopper 3, a first motor 8, a second motor 9, a guide plate 11, and a distributing roller 13 are installed at the left end of the fluidization chamber 1. The bottom of the feed hopper 3 is of a circular tubular structure. An outlet 4 is opened at the right end of the fluidization chamber 1. A bed layer 10 that allows gas to pass through is installed in the fluidization chamber 1. Multiple air-permeable holes with a diameter of 1-2 mm are opened on the bed layer 10. The guide plate 11 is located below the feed hopper 3 and is inclined. The first motor 8 is vertically fixed to the outside of the fluidization chamber 1 through bolts. The output end of the first motor 8 passes through the fluidization chamber 1, the guide plate 11, and extends into the tubular outlet of the feed hopper 3. Multiple crushing blades 12 are installed at the output end of the first motor 8. The distributing roller 13 is horizontally located at the lower right of the guide plate 11. Screw conveyors with opposite spiral directions are arranged on the distributing roller 13. The distributing roller 13 and the guide plate 11 form a funnel structure for feeding. A gap is provided between the distributing roller 13 and the bed layer 10. The second motor 9 is installed outside the fluidization chamber 1 and drives the distributing roller 13 to rotate through its output end. Multiple air guide pipes 14 are installed on the bed layer 10. The air guide pipes 14 are inverted U-shaped pipes and are located above the bed layer 10. The air guide pipes 14 are perpendicular to the bed layer 10 and are evenly spaced. The two ends of the air guide pipes 14 are respectively connected to the space below the bed layer 10. Multiple first air guide elbows 15 and second air guide elbows 16 are installed on the air guide pipes 14. Both the first air guide elbows 15 and the second air guide elbows 16 are connected to the air guide pipes 14 at one end. The other ends of the first air guide elbows 15 and the second air guide elbows 16 are both horizontally arranged. The first air guide elbows 15 and the second air guide elbows 16 are located between the air guide pipes 14 and the bed layer 10. The gases ejected from the first air guide elbows 15 and the second air guide elbows 16 are in different directions. The first three groups of the first air guide elbows 15 and the second air guide elbows 16 located behind the distributing roller 13 are respectively vertically oriented towards the side of the bed layer 10, and the first air guide elbows 15 and the second air guide elbows 16 of the remaining groups are crosswise misaligned and oriented.

[0017] Working principle of the utility model: The molecular sieves separated by the plate and frame filter are all in block structure. They are put into the fluidization chamber through the feed hopper. First, the rotating blades crush the block-shaped molecular sieves in the first step. Then, under the action of gravity, they fall between the material guiding plate and the material distributing roller. At this time, the material lands in the middle of the leftmost end of the bed layer. The material distributing roller rotates and pushes the accumulated material to both ends through the augers with opposite spirals installed, accelerating the dispersion and spreading of the material. Then, under the action of the vibration motor, it moves backward to the rear of the bed layer. During the transmission process, hot air is vertically ejected upward from the bottom of the bed layer to heat and dry the material. The first air guiding elbow pipe and the second air guiding elbow pipe are installed behind the material distributing roller. The first air guiding elbow pipe and the second air guiding elbow pipe installed on multiple groups of air guiding pipes close to the material distributing roller eject to the side of the bed layer, further applying a lateral force during the material spreading process and accelerating the spreading process. At the same time, since the air guiding pipes are connected to the space below the bed layer, the first air guiding elbow pipe and the second air guiding elbow pipe are buried inside the spread material, and hot air can enter the first air guiding elbow pipe and the second air guiding elbow pipe. The first air guiding elbow pipe and the second air guiding elbow pipe horizontally eject hot air, enabling the heat to dry the material from the side. Cooperating with the drying air flow below, multi-directional drying is achieved, further improving the drying capacity.

[0018] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent substitution on some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drying device for preparing ZSM-5 molecular sieve, comprising a fluidized chamber (1), characterized in that: At the left end of the fluidization chamber (1), there are a feed hopper (3), a first motor (8), a second motor (9), a guide plate (11), and a distributing roller (13). At the right end of the fluidization chamber (1), there is a discharge port (4). Inside the fluidization chamber (1), there is a bed layer (10) through which gas can pass. The guide plate (11) is located below the feed hopper (3), and the guide plate (11) is inclined. The first motor (8) is vertically and fixedly connected outside the fluidization chamber (1). The output end of the first motor (8) passes through the fluidization chamber (1), the guide plate (11), and extends into the feed hopper (3). The output end of the first motor (8) is provided with a crushing blade (12). The distributing roller (13) is horizontally located at the lower right of the guide plate (11). The distributing roller (13) is provided with augers with opposite spiral directions. There is a gap between the distributing roller (13) and the bed layer (10). The second motor (9) drives the distributing roller (13) to rotate.

2. The drying equipment for preparing ZSM-5 molecular sieve according to claim 1, characterized in that: On the bed layer (10), there are a plurality of air guide pipes (14). The air guide pipes (14) are located above the bed layer (10). The air guide pipes (14) are perpendicular to the bed layer (10) and are evenly spaced. The air guide pipes (14) communicate with the space below the bed layer (10). On the air guide pipes (14), there are a plurality of first air guide elbows (15). One end of the first air guide elbow (15) communicates with the air guide pipe (14), and the other end of the first air guide elbow (15) is horizontally arranged. The first air guide elbow (15) is located between the air guide pipe (14) and the bed layer (10).

3. The drying equipment for preparing ZSM-5 molecular sieve according to claim 2, characterized in that: On the air guide pipe (14), there is a second air guide elbow (16). One end of the second air guide elbow (16) communicates with the air guide pipe (14), and the other end of the second air guide elbow (16) is horizontally arranged. The second air guide elbow (16) is located between the air guide pipe (14) and the bed layer (10). The gases ejected from the first air guide elbow (15) and the second air guide elbow (16) are in different directions.

4. The drying device for preparing ZSM-5 molecular sieve according to claim 3, wherein: The first air guide elbow (15) and the second air guide elbow (16) are respectively perpendicular to the side surface of the bed layer (10). The air guide pipe (14) is located behind the distributing roller (13).

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