An apparatus for preparing pseudo-boehmite using ammonium bicarbonate as a precipitant

Abstract

The utility model provides a kind of equipment for preparing pseudo-boehmite with ammonium bicarbonate as precipitant, belong to chemical technology field, solve the problem of raw material waste and influence product quality caused by directly inputting a large amount of ammonium bicarbonate in prior art. It includes tank body, the top of tank body is connected with suction pipe and ammonium bicarbonate delivery pipe, three-way electromagnetic valve and vacuum pump are arranged on suction pipe, liquid flow rate sensor is arranged on ammonium bicarbonate delivery pipe. The air in tank body is sucked by vacuum pump through suction pipe, negative pressure is generated in tank body, so that ammonium bicarbonate is sucked out from ammonium bicarbonate delivery pipe and enters tank body to react;During the conveying process of ammonium bicarbonate delivery pipe, the speed of conveying is detected by liquid flow rate sensor, the adjustment of speed is realized by switching the air passage of three-way electromagnetic valve, so as to control the size of negative pressure, and then control the conveying speed of ammonium bicarbonate, ensure that ammonium bicarbonate effectively participates in reaction, reduce the waste of raw materials, and ensure the quality of product.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, specifically to a device for preparing pseudoboehmite using ammonium bicarbonate as a precipitant. Background Technology

[0002] In the petrochemical industry, boehmite is mainly used as a catalyst, binder, and carrier. However, some existing boehmite products have problems such as small specific surface area, high sodium ion residue, and unstable microstructure. To solve these problems, existing technologies use ammonium bicarbonate as a precipitant to obtain boehmite with a large specific surface area and low sodium ion residue.

[0003] Due to the poor stability of ammonium bicarbonate, directly inputting large amounts of ammonium bicarbonate during production will cause a large amount of ammonium bicarbonate to decompose without reacting and volatilize in the form of gas, resulting in waste of raw materials. It is difficult to determine the amount of ammonium bicarbonate used in production, and the rate at which ammonium bicarbonate is input is difficult to control, which also has a significant impact on the microstructure of the product. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide an apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant. A vacuum pump draws air from the tank through a suction pipe, creating a negative pressure inside the tank. This draws ammonium bicarbonate from the ammonium bicarbonate delivery pipe and into the tank for reaction. During the ammonium bicarbonate delivery process, a liquid flow rate sensor detects the delivery speed. The speed is adjusted by switching the air passage of a three-way solenoid valve, thereby controlling the magnitude of the negative pressure and thus the delivery speed of the ammonium bicarbonate. This ensures that the ammonium bicarbonate effectively participates in the reaction, reduces raw material waste, and guarantees product quality.

[0005] The technical solution adopted in this utility model is as follows: An apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant includes a tank, the top of which is connected to a suction pipe and an ammonium bicarbonate delivery pipe. The suction pipe is equipped with a three-way solenoid valve and a vacuum pump, and the ammonium bicarbonate delivery pipe is equipped with a liquid flow rate sensor.

[0006] Preferably, the ammonium bicarbonate delivery pipe is equipped with a first solenoid valve.

[0007] Preferably, the top of the tank is connected to a feeding pipe, and the bottom of the tank is connected to a discharging pipe, both of which are equipped with a second solenoid valve.

[0008] Preferably, the tank is equipped with a stirring device, and a motor connected to the stirring device is fixedly installed on the tank.

[0009] Preferably, a pH sensor is installed on the inner wall of the tank, and the pH sensor is connected to a display screen located on the outside of the tank.

[0010] Preferably, the inner wall of the tank is provided with a temperature sensor connected to the display screen.

[0011] Preferably, the inner wall of the tank is provided with a pressure sensor connected to the display screen.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: A vacuum pump draws air from the tank through a suction pipe, creating a negative pressure inside the tank. This draws ammonium bicarbonate from the ammonium bicarbonate delivery pipe and into the tank for reaction. During the ammonium bicarbonate delivery process, a liquid flow rate sensor detects the delivery speed. The speed is adjusted by switching the air passage of a three-way solenoid valve, thereby controlling the magnitude of the negative pressure and thus the delivery speed of the ammonium bicarbonate. This ensures that the ammonium bicarbonate effectively participates in the reaction, reduces raw material waste, and guarantees product quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.

[0015] Reference numerals in the attached drawings: 1-Tank body; 2-Stirring device; 3-Ammonium bicarbonate conveying pipe; 4-Liquid flow rate sensor; 5-First solenoid valve; 6-Feeding pipe; 7-Motor; 8-Suction pipe; 9-Three-way solenoid valve; 10-Vacuum pump; 11-PH sensor; 12-Temperature sensor; 13-Pressure sensor; 14-Display screen; 15-Discharge pipe; 16-Second solenoid valve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] The following is combined with Figure 1 This utility model will be described in detail.

[0020] Example: An apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant includes a tank 1, with a suction pipe 8 and an ammonium bicarbonate delivery pipe 3 connected to the top of the tank 1. The suction pipe 8 is equipped with a three-way solenoid valve 9 and a vacuum pump 10, and the ammonium bicarbonate delivery pipe 3 is equipped with a liquid flow rate sensor 4.

[0021] Ammonium bicarbonate delivery pipe 3 is connected to a device for storing ammonium bicarbonate (not shown in the figure). The outlet of ammonium bicarbonate delivery pipe 3 is located above the liquid surface. Vacuum pump 10 draws air from tank 1 through suction pipe 8, creating a negative pressure inside tank 1. This draws ammonium bicarbonate from ammonium bicarbonate delivery pipe 3 and into tank 1 for reaction. During the delivery process of ammonium bicarbonate delivery pipe 3, liquid flow rate sensor 4 detects the delivery speed. The speed is adjusted by switching the air passage of three-way solenoid valve 9 to control the magnitude of the negative pressure, thereby controlling the delivery speed of ammonium bicarbonate, ensuring that ammonium bicarbonate effectively participates in the reaction, reducing raw material waste, and ensuring product quality.

[0022] The three-way solenoid valve 9 is connected to the liquid flow rate sensor 4 via a controller (which is existing technology). When the liquid flow rate sensor 4 detects that the delivery speed is too high or too low, it controls the three-way solenoid valve 9 to operate. The three-way solenoid valve 9 has three channels, one of which is connected to the vacuum pump 10, and the other two channels are connected to the outside and inside of the tank 1, respectively. When the flow rate is too high, the three-way solenoid valve 9 operates to slowly open the channel connected to the outside of the tank 1 while slowly closing the channel connected to the inside of the tank 1, thereby reducing the negative pressure generated by the vacuum pump 10 and reducing the flow rate of ammonium bicarbonate. When the flow rate is too low, the three-way solenoid valve 9 performs the opposite operation.

[0023] Liquid flow velocity sensor 4 is existing technology. It can be an impeller-type flow sensor, which drives the impeller to rotate through the liquid flow. The impeller speed is proportional to the flow velocity, and the flow rate is calculated by measuring the impeller speed. Electromagnetic flow sensors, ultrasonic flow sensors, and other sensors can also be used.

[0024] A first solenoid valve 5 is installed on the ammonium bicarbonate delivery pipe 3. The first solenoid valve 5 can control the opening and closing of the ammonium bicarbonate delivery pipe 3, and is only opened when ammonium bicarbonate needs to be delivered, thereby avoiding the decomposition of ammonium bicarbonate due to prolonged contact with the external environment.

[0025] A feeding pipe 6 is connected to the top of the tank 1, and a discharge pipe 15 is connected to the bottom of the tank 1. Both the feeding pipe 6 and the discharge pipe 15 are equipped with a second solenoid valve 16. Aluminum salts can be added to the tank 1 through the feeding pipe 6 to participate in the reaction; after the aluminum salts react with ammonium bicarbonate, they are discharged from the tank 1 through the discharge pipe 15; the second solenoid valves 16 of both the feeding pipe 6 and the discharge pipe 15 remain closed during the reaction process.

[0026] A stirring device 2 is installed in the tank body 1, and a motor 7 connected to the stirring device 2 is fixedly installed on the tank body 1. The stirring device 2 is prior art, and it includes a stirring shaft rotatably mounted on the tank body 1, with several stirring blades installed on the stirring shaft. The motor 7 drives the stirring device 2 to rotate, thereby stirring the solution in the tank body 1 to mix evenly and improve the efficiency of the reaction.

[0027] A pH sensor 11 is installed on the inner wall of tank 1, and the pH sensor 11 is connected to a display screen 14 located on the outside of tank 1. The pH sensor 11 can detect the pH value of the solution inside tank 1. A temperature sensor 12 is installed on the inner wall of tank 1 and connected to the display screen 14. The temperature sensor 12 can detect the temperature of the solution inside tank 1. A pressure sensor 13 is installed on the inner wall of tank 1 and connected to the display screen 14. The pressure sensor 13 can detect the pressure of the solution inside tank 1. The relevant pH value, temperature value, and pressure value are displayed on the display screen 14, which facilitates the operator to perform corresponding operations based on the relevant parameters.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant, comprising a tank (1), characterized in that, The top of the tank (1) is connected to a suction pipe (8) and an ammonium bicarbonate delivery pipe (3). A three-way solenoid valve (9) and a vacuum pump (10) are installed on the suction pipe (8), and a liquid flow rate sensor (4) is installed on the ammonium bicarbonate delivery pipe (3).

2. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 1, characterized in that, The ammonium bicarbonate delivery pipe (3) is equipped with a first solenoid valve (5).

3. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 1, characterized in that, The top of the tank (1) is connected to a feeding pipe (6), and the bottom of the tank (1) is connected to a discharge pipe (15). A second solenoid valve (16) is installed in both the feeding pipe (6) and the discharge pipe (15).

4. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 1, characterized in that, The tank (1) is equipped with a stirring device (2), and a motor (7) connected to the stirring device (2) is fixedly installed on the tank (1).

5. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 1, characterized in that, A pH sensor (11) is installed on the inner wall of the tank (1), and the pH sensor (11) is connected to a display screen (14) located on the outside of the tank (1).

6. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 5, characterized in that, The inner wall of the tank (1) is provided with a temperature sensor (12) connected to the display screen (14).

7. The apparatus for preparing pseudoboehmite using ammonium bicarbonate as a precipitant according to claim 5, characterized in that, The inner wall of the tank (1) is provided with a pressure sensor (13) connected to the display screen (14).

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