Novel gangue-based molecular sieve preparation device

Abstract

The utility model belongs to the technical field of gangue-based molecular sieve processing, particularly relates to a novel gangue-based molecular sieve preparation device, and provides the following scheme aiming at the problems of low synthesis efficiency and high manufacturing cost of the gangue-based molecular sieve preparation device. Comprising a first ultrasonic hot-pressing integrated reaction tank and a second ultrasonic hot-pressing integrated reaction tank which are of the same structure, and a feeding pipe used for receiving coal gangue pretreated through crushing, screening, roasting and the like is arranged on the side wall of the first ultrasonic hot-pressing integrated reaction tank. When the device is used, through an ultrasonic hot-pressing integrated technology, the reaction efficiency of coal gangue and a crystallization agent and the product quality are remarkably improved, the preparation period is shortened, energy consumption and carbon emission under the traditional high-temperature and high-pressure condition are reduced, and the green preparation concept is met; automatic control elements such as an automatic stirrer, a pressure gauge, a pH detector and an electromagnetic valve are arranged, so that accurate control and automatic operation in the preparation process are realized, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gangue-based molecular sieve processing, in particular to a preparation device for a new type of gangue-based molecular sieve. Background Art

[0002] The gangue-based molecular sieve is a molecular sieve material prepared by using low-grade mineral resources such as coal gangue. It has good adsorption performance and catalytic performance and is widely used in fields such as gas separation and catalytic reaction. The device design and operating conditions for preparing the gangue-based molecular sieve need to be optimized according to the specific molecular sieve type and application requirements. Different molecular sieves may require different template agents, alkali sources, and synthesis conditions. Currently, the devices for preparing the gangue-based molecular sieve have problems such as low synthesis efficiency and high manufacturing cost.

[0003] In view of the above problems, the present utility model document proposes a preparation device for a new type of gangue-based molecular sieve. Summary of the Utility Model

[0004] The present utility model provides a preparation device for a new type of gangue-based molecular sieve, which solves the disadvantages of the existing device for preparing the gangue-based molecular sieve, such as low synthesis efficiency and high manufacturing cost.

[0005] The present utility model provides the following technical solutions:

[0006] A preparation device for a new type of gangue-based molecular sieve, comprising:

[0007] An ultrasonic hot pressing integrated reaction tank one and an ultrasonic hot pressing integrated reaction tank two with the same structure. A feed pipe for receiving coal gangue after pretreatment such as crushing, screening, and roasting is provided on the side wall of the ultrasonic hot pressing integrated reaction tank one. The discharge pipe at the bottom of the ultrasonic hot pressing integrated reaction tank one is connected to the top of the inner wall of the ultrasonic hot pressing integrated reaction tank two. A burning tank is provided below the ultrasonic hot pressing integrated reaction tank two. The access port of the burning tank receives the material discharged from the discharge pipe at the bottom of the ultrasonic hot pressing integrated reaction tank two through a conveyor belt on one side;

[0008] One side of the ultrasonic hot pressing integrated reaction tank one is connected to a sodium silicate reagent tank used as the first crystallization reagent. A pure water tank is connected to the conveying pipe of the sodium silicate reagent tank. The conveying pipe on the other side of the pure water tank is connected to the inner wall of the ultrasonic hot pressing integrated reaction tank two. An acetic acid tank used as the second crystallization reagent, a TEOS tank, a CATB tank, and a NAF tank used as flushing liquid are sequentially connected to the conveying pipe of the pure water tank from top to bottom.

[0009] In a possible design, an automatic stirrer is provided at the center of the top of the integrated ultrasonic thermal pressing reaction tank. On the driving rod of the automatic stirrer, two rows of fishbone-shaped crushing plates for preventing crystallization and caking are symmetrically and fixedly arranged. At the end of the fishbone-shaped crushing plate, a plurality of crushing teeth arranged at equal intervals are fixedly provided.

[0010] In a possible design, a pressure gauge and a pH detector are provided at the top of the integrated ultrasonic thermal pressing reaction tank. The test tube of the pH detector extends to the bottom of the tank.

[0011] In a possible design, a drain pipe for discharging flushing water is communicated with the side wall of the discharge pipe. A 250-mesh filter screen for preventing the discharge of reactants is embedded in the drain pipe.

[0012] In a possible design, corresponding solenoid valves are provided on both the discharge pipe and the drain pipe.

[0013] In a possible design, corresponding flow meters and gate valves are provided on the conveying pipes of the sodium silicate reagent tank, the pure water tank, the acetic acid tank, the TEOS tank, the CATB tank and the NAF tank.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present invention.

[0015] The present invention has the following beneficial effects:

[0016] Through the integrated ultrasonic thermal pressing technology, the present invention significantly improves the reaction efficiency between coal gangue and crystallization reagents and the product quality, shortens the preparation period, and reduces the energy consumption and carbon emissions under traditional high-temperature and high-pressure conditions, meeting the concept of green preparation.

[0017] The present invention is equipped with automatic control elements such as an automatic stirrer, a pressure gauge, a pH detector, and solenoid valves, realizing precise control and automatic operation of the preparation process and reducing the labor cost.

[0018] The present invention converts coal gangue, an industrial waste, into molecular sieve products with high added value, realizing the effective utilization of resources and the development of circular economy. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a preparation device for a novel gangue-based molecular sieve provided by an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of another perspective of a preparation device for a novel gangue-based molecular sieve provided by an embodiment of the present invention;

[0021] Figure 3Schematic diagram of the internal structure of an ultrasonic and thermal pressing integrated reaction tank of a preparation device for a novel gangue-based molecular sieve provided by an embodiment of the present utility model;

[0022] Figure 4 Schematic diagram of the reagent tank and the flushing liquid tank of a preparation device for a novel gangue-based molecular sieve provided by an embodiment of the present utility model.

[0023] Reference numerals: 1. Ultrasonic and thermal pressing integrated reaction tank one; 2. Ultrasonic and thermal pressing integrated reaction tank two; 3. Automatic stirrer; 4. Pressure gauge; 5. pH detector; 6. Fishbone-shaped crushing plate; 7. Crushing teeth; 8. Discharge pipe; 9. Drain pipe; 10. 250-mesh filter screen; 11. Solenoid valve; 12. Sodium silicate reagent tank; 13. Pure water tank; 14. Acetic acid tank; 15. TEOS tank; 16. CATB tank; 17. NAF tank; 18. Flowmeter; 19. Gate valve; 20. Calcination tank; 21. Conveyor belt. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc. indicating orientations or positional relationships are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0026] In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components is omitted in the present utility model.

[0027] Embodiment 1

[0028] Please refer to Figures 1-4 , a novel preparation device, which realizes the efficient preparation from coal gangue pretreatment to the final molecular sieve product through a series of precisely controlled steps, including:

[0029] There are an ultrasonic hot-pressing integrated reaction tank 1 and an ultrasonic hot-pressing integrated reaction tank 2 with the same structure, model GSH-35L. These two reaction tanks have exactly the same structural design and both have ultrasonic and hot-pressing functions. Next, specific components on the ultrasonic hot-pressing integrated reaction tank 1 will be introduced to promote the full reaction between coal gangue and crystallization agents;

[0030] A feed pipe is provided on the side wall of the reaction tank 1 to receive coal gangue that has been crushed, screened to an appropriate particle size (such as 0.5 - 2 mm), and pretreated by roasting. The discharge pipe 8 at the bottom of the ultrasonic hot-pressing integrated reaction tank 1 is connected to the top of the inner wall of the ultrasonic hot-pressing integrated reaction tank 2 to achieve continuous material transfer. A burning tank 20 is arranged below the ultrasonic hot-pressing integrated reaction tank 2. The inlet of the burning tank 20 receives the material discharged from the discharge pipe 8 at the bottom of the ultrasonic hot-pressing integrated reaction tank 2 through a conveyor belt 21 on one side for further burning treatment to remove impurities and promote the crystallization of molecular sieves;

[0031] One side of the ultrasonic hot-pressing integrated reaction tank 1 is connected to a sodium silicate reagent tank 12 used as the first crystallization agent. A pure water tank 13 is connected to the conveying pipe of the sodium silicate reagent tank 12 to adjust the reagent concentration. The conveying pipe on the other side of the pure water tank 13 is connected to the inner wall of the ultrasonic hot-pressing integrated reaction tank 2. The pure water tank 13 not only provides dilution water for the sodium silicate reagent but also directly supplies pure water to the inner wall of the reaction tank 2 through the conveying pipe on the other side as a reaction medium. On the conveying pipe of the pure water tank 13, an acetic acid tank 14 used as the second crystallization agent, a TEOS tank 15, a CATB tank 16, and a NAF tank 17 used as flushing liquid are connected in sequence from top to bottom. Corresponding flow meters 18 and gate valves 19 are provided on the conveying pipes of the sodium silicate reagent tank 12, the pure water tank 13, the acetic acid tank 14, the TEOS tank 15, the CATB tank 16, and the NAF tank 17 to ensure the accurate metering and supply of reagents as needed;

[0032] In the center of the top of the ultrasonic hot-pressing integrated reaction tank 1, an automatic stirrer 3 is provided. The automatic stirrer 3 consists of a driving motor, a transmission rod, and a stirring tool at the bottom end of the transmission rod. The driving motor drives the stirring tool through the transmission rod to stir the mixed raw materials. Two rows of fishbone-shaped crushing plates 6 are symmetrically and fixedly arranged on the transmission rod of the automatic stirrer 3. A plurality of crushing teeth 7 arranged at equal distances are fixedly provided at the ends of the fishbone-shaped crushing plates 6 to crush crystal blocks during the stirring process to prevent material caking. A pressure gauge 4 for real-time monitoring of the pressure inside the tank to ensure that the reaction proceeds within a safe range and a pH detector 5 for accurately measuring the pH value of the reaction system to optimize the crystallization effect, model VBQ Pro1601pH, are provided on the top of the ultrasonic hot-pressing integrated reaction tank 1. The test tube of the pH detector 5 extends to the bottom of the tank.

[0033] This application can be used for processing gangue-based molecular sieves and can also be used in other fields applicable to this application.

[0034] Example 2

[0035] Improved based on Example 1:

[0036] A preparation device for a new type of gangue-based molecular sieve, which is used in the field of gangue-based molecular sieve processing;

[0037] Please refer to Figure 3 , a drain pipe 9 for discharging flushing water is connected to the side wall of the discharge pipe 8. A 250-mesh filter screen 10 is embedded in the drain pipe 9 to prevent the reactants from being discharged with the flushing water. Solenoid valves 11 are provided on both the discharge pipe 8 and the drain pipe 9 to achieve precise control of the material transmission and flushing processes.

[0038] The working principle and usage process of this technical solution are as follows:

[0039] First, after the gangue is pretreated by crushing, screening, and roasting, it will be fed into the ultrasonic hot pressing integrated reaction tank 1. Through the precise control of the reagent tank group, the system automatically adds sodium silicate and aqueous solution and starts the stirring process for mixing reaction. At the same time, when the pH meter 5 monitors that the pH value of the solution reaches the preset value of 4, the valves of the reagent tank will automatically close to ensure the stability of the reaction conditions. After that, the mixed solution will undergo an aging process for 6 hours. After the aging is completed, the temperature in the device will be raised to 110 °C, and a hydrothermal reaction will be carried out at this constant temperature for 11 hours. After the reaction is completed, the drainage system will be automatically opened, and at the same time, the aqueous solution reagent tank will also automatically open the flushing reagent. After the flushing is completed, the device will be heated to 70 °C again and dried for 12 hours to finally form SAPO-20 powder;

[0040] At the same time, in the ultrasonic hot pressing integrated reaction tank 2, the dosing tank automatically opens the valve, adds a certain amount of relevant reagents and stirs. The SAPO-20 powder prepared in the ultrasonic hot pressing integrated reaction tank 1 will be transported to the ultrasonic hot pressing integrated reaction tank 2 for stirring for 1 hour, and then undergo the first crystallization for 72 hours. Then, the valve of the acetic acid tank 14 in the reagent tank group automatically opens for the second crystallization for 12 hours. After the reaction is completed, the drainage system will be automatically opened, and the aqueous solution reagent tank will automatically open the flushing reagent. After the flushing is completed, the device will be heated to 70 °C and dried for 12 hours to obtain the initial material. Subsequently, this material will be transported to the calcination tank 20 through the conveyor belt 21. The temperature of the device will be adjusted to 500 °C and calcined for 8 hours to finally form ASPO-20 / MCM-48 molecular sieve.

[0041] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A preparation device for a novel gangue-based molecular sieve, characterized in that, Including: An ultrasonic hot-pressing integrated reaction tank one (1) and an ultrasonic hot-pressing integrated reaction tank two (2) with the same structure. A feed pipe for receiving coal gangue after being pretreated by crushing, screening and roasting is arranged on the side wall of the ultrasonic hot-pressing integrated reaction tank one (1). The discharge pipe (8) at the bottom of the ultrasonic hot-pressing integrated reaction tank one (1) is connected to the top of the inner wall of the ultrasonic hot-pressing integrated reaction tank two (2). A burning tank (20) is arranged below the ultrasonic hot-pressing integrated reaction tank two (2). The inlet of the burning tank (20) receives the materials discharged from the discharge pipe (8) at the bottom of the ultrasonic hot-pressing integrated reaction tank two (2) through a conveyor belt (21) on one side; One side of the ultrasonic hot-pressing integrated reaction tank one (1) is connected to a sodium silicate reagent tank (12) serving as a first crystallization reagent. A pure water tank (13) is connected to the conveying pipe of the sodium silicate reagent tank (12). The conveying pipe on the other side of the pure water tank (13) is connected to the inner wall of the ultrasonic hot-pressing integrated reaction tank two (2). An acetic acid tank (14) serving as a second crystallization reagent, a TEOS tank (15), a CATB tank (16) and a NAF tank (17) serving as flushing liquids are sequentially connected to the conveying pipe of the pure water tank (13) from top to bottom.

2. The preparation device of a novel gangue-based molecular sieve according to claim 1, characterized in that, An automatic stirrer (3) is arranged at the center of the top of the ultrasonic hot-pressing integrated reaction tank one (1). Two rows of fishbone-shaped crushing plates (6) for preventing crystallization and caking are symmetrically and fixedly arranged on the transmission rod of the automatic stirrer (3). A plurality of crushing teeth (7) arranged at equal intervals are fixedly arranged at the end of the fishbone-shaped crushing plates (6).

3. The preparation device of a novel gangue-based molecular sieve according to claim 1, characterized in that, A pressure gauge (4) and a pH detector (5) are arranged at the top of the ultrasonic hot-pressing integrated reaction tank one (1). The test tube of the pH detector (5) extends to the bottom of the tank.

4. The preparation device of a novel gangue-based molecular sieve according to claim 1, characterized in that A drain pipe (9) for discharging flushing water is communicated with the side wall of the discharge pipe (8). A 250-mesh filter screen (10) for preventing the discharge of reactants is embedded in the drain pipe (9).

5. The preparation device of a novel gangue-based molecular sieve according to claim 4, characterized in that, Solenoid valves (11) corresponding to the discharge pipe (8) and the drain pipe (9) are arranged on both of them.

6. The preparation device of a novel gangue-based molecular sieve according to claim 1, characterized in that, Flow meters (18) and gate valves (19) corresponding to the conveying pipes of the sodium silicate reagent tank (12), the pure water tank (13), the acetic acid tank (14), the TEOS tank (15), the CATB tank (16) and the NAF tank (17) are arranged on the conveying pipes of them.

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