Cobalt chloride spray pyrolysis preparation device

Abstract

The utility model provides a cobalt chloride spray pyrolysis preparation device, and relates to the field of cobalt chloride pyrolysis preparation, the cobalt chloride spray pyrolysis preparation device comprises an air buffer tank and a solution stirring tank, the air buffer tank is connected with a primary air heater through a pipeline; raw materials are mixed in a solution state through the solution stirring tank, uniform component distribution is guaranteed, the technological process is simple, component loss is small, the stoichiometric ratio can be accurately controlled, the powder is suitable for preparing multi-component composite powder, the powder is formed by drying liquid drops suspended in the air, particles are in regular shapes, powder agglomeration is small under the action of airflow, and the particle size is small. Subsequent absorption and grinding are not needed, the purity and activity of the product are guaranteed, a spray pyrolysis tower is matched with hot air to conduct rapid pyrolysis on a solution, liquid drops do not generate component segregation in the reaction process, the uniformity of component distribution is guaranteed, the product can be obtained through a spray pyrolysis one-step method, the processes of filtering, absorption, drying and smashing are not needed, operation is easy and convenient, the process is continuous, and the production cost is low. The efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of preparing cobalt chloride by pyrolysis, and particularly relates to a device for preparing cobalt chloride by spray pyrolysis. Background Art

[0002] Cobalt tetroxide is an important inorganic compound, which is widely used in the fields of catalysts, electrochemical battery materials, sensors, etc. With the further development of science and technology in the future, cobalt tetroxide will have further applications.

[0003] There are many methods for preparing cobalt tetroxide. At present, the two more common methods are: one is to prepare by thermal decomposition of cobalt salt compounds; the other is to prepare by cobalt oxide reduction reaction. For the method of preparing by thermal decomposition of cobalt salt compounds, first dissolve the cobalt salt compounds in a suitable solvent, then evaporate it, and finally obtain the product of cobalt tetroxide through evaporation, drying, etc. The thermal decomposition method has a simple and feasible process and can be prepared in the laboratory at present. However, the current preparation process has the disadvantages of a long process and uneven products.

[0004] In summary, the utility model provides a device for preparing cobalt chloride by spray pyrolysis to solve the above problems. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A device for preparing cobalt chloride by spray pyrolysis includes an air buffer tank and a solution stirring tank. The air buffer tank is connected with a primary air heater through a pipeline, and the primary air heater is connected with a secondary air heater through a pipeline. The secondary air heater is connected with a spray pyrolysis tower through a pipeline. The spray pyrolysis tower includes a tower body and a high-pressure nozzle. The solution stirring tank is connected with a metering pump through a pipeline, and the metering pump is connected with the high-pressure nozzle of the spray pyrolysis tower through a pipeline. The spray pyrolysis tower is connected with a dust collector through a pipeline. The dust collector is connected with a rotary discharger and a tail gas absorption tower respectively through pipelines. The tail gas absorption tower is connected with a tail gas induced draft fan through a pipeline.

[0007] Further, in the utility model, the primary air heater and the secondary air heater are of an electric heating type, and the primary air heater and the secondary air heater can adopt combined or multi-stage heating.

[0008] Further, in the utility model, a voltage stabilizer is installed on the pipeline between the metering pump and the high-pressure nozzle of the spray pyrolysis tower. The input ends of the primary air heater and the secondary air heater are both connected with the output end of an external variable-frequency heating controller.

[0009] Furthermore, in the present utility model, the solution stirring tank comprises a tank body, a motor and a stirring frame, and the bottom of the motor is fixedly connected to the tank body, and the output shaft of the motor is drivingly connected to the stirring frame.

[0010] Furthermore, in the present utility model, one end of the dust collector is communicated with external compressed air through a pipeline, and the filter bag of the dust collector is a PTFE filter bag.

[0011] Furthermore, in the present utility model, the type of the tail gas absorption tower is a packed tower, and the tail gas absorption tower comprises a spray head, and one end of the spray head is communicated with external process water through a pipeline.

[0012] Advantageous effects: The present utility model has the following advantageous effects:

[0013] In the present utility model, the raw materials are mixed in a solution state through the solution stirring tank, ensuring uniform distribution of components, simple process, less component loss, accurate control of stoichiometric ratio, suitable for preparing multi-component composite powders. The powders are dried from droplets suspended in the air, with regular particle shapes, less powder agglomeration under the action of air flow, no subsequent absorption and grinding required, ensuring product purity and activity. Through the spray pyrolysis tower in cooperation with the primary air heater, secondary air heater and air buffer tank, the solution is rapidly pyrolyzed, and the droplets do not undergo component segregation during the reaction, ensuring the uniformity of component distribution. The product can be obtained by using the one-step spray pyrolysis method, without filtration, absorption, drying and pulverization processes, with simple and convenient operation, continuous process and high efficiency. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the process of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the spray pyrolysis tower of the present utility model;

[0016] Figure 3 is a schematic cross-sectional structural diagram of the solution stirring tank of the present utility model.

[0017] In the figure:

[0018] 1. Air buffer tank; 2. Primary air heater; 3. Secondary air heater; 4. Spray pyrolysis tower; 5. Solution stirring tank; 6. Metering pump; 7. Dust collector; 8. Rotary discharger; 9. Tail gas absorption tower; 10. Tail gas induced draft fan. Detailed Embodiments

[0019] To better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows. In the present disclosure, various aspects of the present utility model are described with reference to the drawings, and many illustrative embodiments are shown in the drawings. The embodiments of the present disclosure do not necessarily define all aspects of the present utility model. It should be understood that the various concepts and embodiments introduced above, as well as those concepts and embodiments described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present utility model are not limited to any implementation manner. Additionally, some aspects disclosed in the present utility model can be used alone, or in any suitable combination with other aspects disclosed in the present utility model.

[0020] Embodiment 1

[0021] As Figures 1 - 3 shown, this is the first embodiment of the present utility model. This embodiment provides a device for preparing cobalt chloride by spray pyrolysis, which includes an air buffer tank 1 and a solution stirring tank 5. The air buffer tank 1 is connected to a primary air heater 2 through a pipeline, and the primary air heater 2 is connected to a secondary air heater 3 through a pipeline. The secondary air heater 3 is connected to a spray pyrolysis tower 4 through a pipeline. The spray pyrolysis tower 4 includes a tower body and a high-pressure nozzle. The solution stirring tank 5 is connected to a metering pump 6 through a pipeline, and the metering pump 6 is connected to the high-pressure nozzle of the spray pyrolysis tower 4 through a pipeline. The spray pyrolysis tower 4 is connected to a dust collector 7 through a pipeline, and the dust collector 7 is respectively connected to a rotary discharger 8 and a tail gas absorption tower 9 through pipelines. The tail gas absorption tower 9 is connected to a tail gas induced draft fan 10 through a pipeline.

[0022] As Figures 1 - 3 shown, after the cobalt chloride solution stored in the solution stirring tank 5 is pressurized by a diaphragm metering pump 6, it is evenly atomized in the spray pyrolysis tower 4 through a high-pressure nozzle, and fully contacts with the hot air heated by the primary air heater 2 and the secondary air heater 3 from the compressed air buffer tank 1 in the spray pyrolysis tower 4. While the moisture is rapidly vaporized, the material is rapidly pyrolyzed. The pyrolyzed material enters the dust collector 7 with the hot air for gas-solid separation. The collected material is collected by the rotary discharger 8, and the hot air coming out of the dust collector 7 enters the tail gas absorption tower 9 for water spraying. The HCL gas in the hot air is absorbed by water to form a dilute hydrochloric acid solution for recycling, and the non-condensable gas is discharged through the tail gas induced draft fan 10.

[0023] Embodiment 2

[0024] Referring to Figure 1 and 3 , this is the second embodiment of the present utility model. This embodiment is based on the previous embodiment.

[0025] In this embodiment, the primary air heater 2 and the secondary air heater 3 are of the electric heating type, and the primary air heater 2 and the secondary air heater 3 can be combined or multi-stage heated.

[0026] A voltage stabilizer is installed on the pipeline between the metering pump 6 and the high-pressure nozzle of the spray pyrolysis tower 4. The input ends of the primary air heater 2 and the secondary air heater 3 are both connected to the output end of an external variable-frequency heating controller.

[0027] The solution stirring tank 5 includes a tank body, a motor, and a stirring frame. The bottom of the motor is fixedly connected to the tank body, and the output shaft of the motor is drivingly connected to the stirring frame.

[0028] As Figure 1 and 3 shown, by connecting the primary air heater 2 and the secondary air heater 3 to an external variable-frequency heating controller, the external variable-frequency heating controller can control the operation or shutdown of the primary air heater 2 and the secondary air heater 3. By the solution stirring tank 5 including a tank body, a motor, and a stirring frame, when in use, the tank body can provide space for stirring and mixing the raw materials, and the motor drives the stirring frame to rotate, thereby mixing and stirring the raw material solution.

[0029] Embodiment 3

[0030] Referring to Figure 1 , this is the third embodiment of the present utility model, and this embodiment is based on the first two embodiments.

[0031] In this embodiment, one end of the dust collector 7 is communicated with external compressed air through a pipeline, and the filter bag of the dust collector 7 is a PTFE filter bag.

[0032] The type of the tail gas absorption tower 9 is a packed tower. The tail gas absorption tower 9 includes a spray head, and one end of the spray head is communicated with external process water through a pipeline.

[0033] As Figure 1 shown, by using a PTFE filter bag for the dust collector 7, good dust removal operation can be carried out. And by connecting one end of the dust collector 7 to external compressed air, the external compressed air can be transmitted to the front end of the dust collector 7. By mixing in cold air, the temperature of the filter bag of the dust collector 7 can be prevented from exceeding the design temperature. By the tail gas absorption tower 9 including a spray head and being communicated with external process water, the external process water can be sprayed out through the spray head, so that the HCL gas in the hot air is absorbed by water to form a dilute hydrochloric acid solution for recycling.

[0034] During use, first, the cobalt chloride solution stored in the solution stirring tank 5 is pressurized by a diaphragm metering pump 6 and then transmitted to a high-pressure nozzle. Through the high-pressure nozzle, it is evenly atomized in the spray pyrolysis tower 4. At the same time, the compressed air in the air buffer tank 1 is transmitted to the primary air heater 2 and the secondary air heater 3. The hot air after being heated by the primary air heater 2 and the secondary air heater 3 will be transmitted to the spray pyrolysis tower 4, so that the hot air is in full contact with the atomized solution in the spray pyrolysis tower 4. The moisture will quickly vaporize, and at the same time, the material will be quickly pyrolyzed. The pyrolyzed material enters the dust collector 7 with the hot air for gas-solid separation. The collected material is collected by a rotary discharger 8. The hot air coming out of the dust collector 7 will enter the tail gas absorption tower 9 for water spraying. Then, the HCL gas in the hot air will be absorbed by water to form a dilute hydrochloric acid solution for recycling. The non-condensable gas is discharged through the tail gas induced draft fan 10. The product can be obtained through the one-step spray pyrolysis method, without the processes of filtration, absorption, drying, and pulverization. The operation is simple and convenient, the process is continuous, and the efficiency is high.

[0035] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in this field. And this application document is mainly used to protect the mechanical device, so the control method and circuit connection will not be explained in detail in this application document.

[0036] Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model belongs can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. A cobalt chloride spray pyrolysis preparation device, comprising an air buffer tank (1) and a solution stirring tank (5), characterized in that: The air buffer tank (1) is connected to a primary air heater (2) via a pipeline, and the primary air heater (2) is connected to a secondary air heater (3) via a pipeline, the secondary air heater (3) is connected to a spray pyrolysis tower (4) via a pipeline, the spray pyrolysis tower (4) comprises a tower body and a high-pressure nozzle, the solution stirring tank (5) is connected to a metering pump (6) via a pipeline, the metering pump (6) is connected to the high-pressure nozzle of the spray pyrolysis tower (4) via a pipeline, the spray pyrolysis tower (4) is connected to a dust collector (7) via a pipeline, the dust collector (7) is respectively connected to a rotary discharger (8) and an exhaust gas absorption tower (9) via pipelines, and the exhaust gas absorption tower (9) is connected to an exhaust gas induced draft fan (10) via a pipeline.

2. The cobalt chloride spray pyrolysis preparation device according to claim 1, characterized in that: The primary air heater (2) and the secondary air heater (3) are of electric heating type, and the primary air heater (2) and the secondary air heater (3) can adopt combined or multi-stage heating.

3. The cobalt chloride spray pyrolysis preparation device according to claim 1, characterized in that: A voltage stabilizer is installed on the pipeline between the metering pump (6) and the high-pressure nozzle of the spray pyrolysis tower (4), and the input ends of the primary air heater (2) and the secondary air heater (3) are both connected to the output end of an external variable frequency heating controller.

4. The cobalt chloride spray pyrolysis preparation device according to claim 1, characterized in that: The solution stirring tank (5) comprises a tank body, a motor and a stirring frame, wherein the bottom of the motor is fixedly connected to the tank body, and the output shaft of the motor is drivingly connected to the stirring frame.

5. The cobalt chloride spray pyrolysis preparation device according to claim 1, characterized in that: One end of the dust collector (7) is in communication with external compressed air via a pipeline, and a filter bag of the dust collector (7) is a PTFE filter bag.

6. The cobalt chloride spray pyrolysis preparation device according to claim 1, characterized in that: The tail gas absorption tower (9) is a packed tower. The tail gas absorption tower (9) comprises a spray head, and one end of the spray head is connected to external process water through a pipeline.

Images