Rapid drying device for strontium carbonate

Abstract

This invention discloses a rapid drying device for strontium carbonate, comprising a heater, a feeder, a flash evaporator, a cyclone separator, a coarse bag filter, a water cooling mechanism, a fine bag filter, and a heat exchanger. The air inlet of the heater is connected to the heat exchanger via a return air pipe, and the air outlet of the heater is connected to the flash evaporator. The feeder is connected to the flash evaporator and adds strontium carbonate to be dried into the flash evaporator through the feeder. The outlet of the flash evaporator is connected to the cyclone separator, and the air outlet of the cyclone separator is connected to the coarse bag filter. The outlets of both the cyclone separator and the coarse bag filter are connected to the inlet of the water cooling mechanism. The air outlet of the coarse bag filter is connected to the heat exchanger, and the outlet of the water cooling mechanism is connected to the fine bag filter. This device improves thermal efficiency, enabling continuous production.

Description

Technical Field

[0001] This invention relates to the production of strontium carbonate, and in particular to a rapid drying device for strontium carbonate. Background Technology

[0002] Strontium carbonate has wide applications in papermaking, printing and dyeing, water treatment, and pharmaceuticals. In the production of strontium carbonate, it needs to be dried. Current technology typically uses a drying bed, where the strontium carbonate is poured onto the drying bed, dried, and then scraped off using a scraper. The scraper is then pulverized. This drying method is time-consuming and difficult to implement in continuous production.

[0003] To address the aforementioned problems, existing technologies have proposed a flash drying solution, the structure of which is as follows: Figure 3 As shown, the dryer includes a heater 10, a feeder 20, a flash evaporator 30, a cyclone separator 40, a bag filter 9, and a Venturi conveyor 60. Cold air, heated by the heater 10, is fed into the flash evaporator 30. A rotating agitator is located at the bottom of the flash evaporator 30. Strontium carbonate is fed into the flash evaporator 30 via the feeder 20, where it comes into contact with the hot air entering from the bottom. Under the action of the continuously rotating agitator, the wet material and hot air are thoroughly mixed, promoting heat and mass transfer and accelerating the drying process. Coarse particles are separated by a classifier and fall to the bottom of the dryer for further drying. Fine particles are blown out of the flash evaporator 30 and filtered sequentially by the cyclone separator 40 and the bag filter 9. The product is then discharged through the Venturi conveyor 60. Utility Model Content

[0004] However, the above-mentioned solutions in the existing technology still have defects. This invention provides another rapid drying device for strontium carbonate, and its corresponding advantages will be described in detail below in conjunction with the specific structure of the device.

[0005] A rapid drying device for strontium carbonate includes a heater, a feeder, a flash evaporator, a cyclone separator, a coarse bag filter, a water cooling mechanism, a fine bag filter, and a heat exchanger. The air inlet of the heater is connected to the heat exchanger via a return air pipe, and the air outlet of the heater is connected to the flash evaporator. The feeder is connected to the flash evaporator and adds strontium carbonate to be dried into the flash evaporator through the feeder. The outlet of the flash evaporator is connected to the cyclone separator, and the air outlet of the cyclone separator is connected to the coarse bag filter. The outlets of both the cyclone separator and the coarse bag filter are connected to the inlet of the water cooling mechanism. The air outlet of the coarse bag filter is connected to the heat exchanger, and the outlet of the water cooling mechanism is connected to the fine bag filter.

[0006] Optionally, a temperature control valve is also provided between the cyclone separator and the coarse bag filter; the temperature control valve is connected to a temperature sensor provided on the pipeline between the cyclone separator and the coarse bag filter; the water cooling mechanism includes an outer cylinder and an inner cylinder, forming a jacket between the outer cylinder and the inner cylinder; a stirring spiral is provided in the inner cylinder, and the stirring spiral is driven to rotate by a motor; the jacket has a water inlet and a water outlet, and the inner cylinder has a feed inlet and a discharge outlet; the strontium carbonate moves towards the discharge outlet in a direction opposite to the flow direction of the cooling water; the water inlet of the water cooling mechanism is lower than the water outlet.

[0007] The beneficial effects of this invention are: the new strontium carbonate rapid drying device utilizes a return air duct and heat exchanger to realize the recovery and recycling of waste heat, thereby improving thermal efficiency; by adopting a water cooling mechanism, it achieves rapid cooling of strontium carbonate, enabling continuous production of strontium carbonate and improving production efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of a strontium carbonate rapid drying device;

[0009] Figure 2 This is a schematic diagram of the water cooling mechanism;

[0010] Figure 3 This is a schematic diagram of the structure of flash drying in the prior art. Detailed Implementation

[0011] To make the above-mentioned objects, features, and advantages of this invention more apparent and understandable, the specific embodiments of this invention will be described in detail below with reference to the accompanying drawings, making the above-mentioned and other objects, features, and advantages of this invention clearer. In all the drawings, the same reference numerals indicate the same parts. The drawings are not intentionally drawn to scale; the focus is on illustrating the main idea of ​​this invention.

[0012] like Figure 1 As shown, this novel strontium carbonate rapid drying device includes a heater 1, a feeder 2, a flash evaporator 3, a cyclone separator 4, a coarse bag filter 5, a water cooling mechanism 6, a fine bag filter 7, and a heat exchanger 8. The air inlet of the heater 1 is connected to the heat exchanger 8 via a return air pipe 9. The air outlet of the heat exchanger 8 is connected to the flash evaporator 3. The feeder 2 is connected to the flash evaporator 3 to add strontium carbonate to be dried into the flash evaporator 3. The outlet of the flash evaporator 3 is connected to the cyclone separator 4, which performs preliminary separation of the strontium carbonate. The air outlet of the cyclone separator 4 is connected to the coarse bag filter 5. The outlets of the cyclone separator 4 and the coarse bag filter 5 are connected to the inlet of the water cooling mechanism 6. The air outlet of the coarse bag filter 5 is connected to the heat exchanger 8, and the outlet of the water cooling mechanism 6 is connected to the fine bag filter 7.

[0013] During operation, the strontium carbonate to be dried is added to the flash evaporator 3 via the feeder 2. High-temperature gas is fed into the flash evaporator 3 through the heater 1. In the flash evaporator 3, the strontium carbonate is stirred and mixed with the high-temperature steam, thus completing rapid drying. The dried strontium carbonate enters the cyclone separator 4 with the airflow. A portion of the strontium carbonate is separated by the cyclone separator 4 and falls into the water-cooling mechanism 6. The other portion enters the coarse bag filter 5 from the outlet of the cyclone separator 4. After coarse filtration, it enters the water-cooling mechanism 6. The strontium carbonate in the water-cooling mechanism 6 is rapidly cooled and then sent to the fine bag filter 7 for filtration. The finished product is discharged from the outlet of the fine bag filter 7. On the other hand, the high-temperature gas discharged from the coarse bag filter 5 exchanges heat with cold air through the heat exchanger 8. The cold air is heated and then sent back to the heater 1 through the return air pipe 9, thus realizing the recycling of hot air, improving thermal efficiency, and reducing energy consumption.

[0014] In existing technologies, the material exiting a cyclone separator or coarse bag filter contains a significant amount of impurities. It must undergo natural cooling before further filtration to prevent damage to the subsequent bag filter mechanism due to high temperatures. This process is time-consuming, disrupts continuous production, and results in low efficiency. In this new invention, a temperature control valve 10 can be installed between the cyclone separator 4 and the coarse bag filter 5. The temperature control valve 10 is connected to a temperature sensor 41 located on the pipeline between the cyclone separator 4 and the coarse bag filter 5. When the temperature sensor 41 detects excessively high temperatures within the pipeline, it sends a high-temperature signal to the temperature control valve 10, which temporarily closes to prevent damage to the coarse bag filter 5 due to high temperatures.

[0015] In this new invention, the water-cooling mechanism 6 enables rapid cooling of strontium carbonate. The cooled strontium carbonate is then directly fed into the fine bag filter 7 for filtration, thus improving production efficiency. (See reference...) Figure 2 The water-cooling mechanism includes an outer cylinder 6.9 and an inner cylinder 6.6, with a jacket 6.7 formed between them. An agitator 6.5 is installed inside the inner cylinder 6.6, driven by a motor 6.8. The jacket 6.7 has an inlet 6.2 and an outlet 6.3, while the inner cylinder 6.6 has a feed inlet 6.1 and a discharge outlet 6.4. Low-temperature cooling water enters the jacket 6.7 through the inlet 6.2, while high-temperature strontium carbonate enters the inner cylinder 6.6 through the feed inlet 6.1. Driven by the agitator 6.5, the strontium carbonate moves towards the discharge outlet 6.4 in the opposite direction to the cooling water, while the cooling water flows towards the outlet 6.3, thus completing heat exchange. The strontium carbonate is cooled, and the water after heat exchange can be further used in subsequent processes.

[0016] Furthermore, the water cooling mechanism 6 can be tilted downwards, with the inlet 6.1 higher than the outlet 6.4 and the water inlet 6.2 lower than the outlet 6.3. This allows the water cooling mechanism 6 to maintain a higher water level and achieve better cooling.

[0017] Many specific details have been set forth in the foregoing description to provide a full understanding of the present invention. However, the above description is merely a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A rapid drying device for strontium carbonate, characterized in that, The system includes a heater, a feeder, a flash evaporator, a cyclone separator, a coarse bag filter, a water cooling mechanism, a fine bag filter, and a heat exchanger. The air inlet of the heater is connected to the heat exchanger via a return air pipe, and the air outlet of the heater is connected to the flash evaporator. The feeder is connected to the flash evaporator and adds strontium carbonate to be dried into the flash evaporator through the feeder. The outlet of the flash evaporator is connected to the cyclone separator, and the air outlet of the cyclone separator is connected to the coarse bag filter. The outlets of both the cyclone separator and the coarse bag filter are connected to the inlet of the water cooling mechanism. The air outlet of the coarse bag filter is connected to the heat exchanger, and the outlet of the water cooling mechanism is connected to the fine bag filter. A temperature control valve is also installed between the cyclone separator and the coarse bag filter. The temperature control valve is connected to a temperature sensor installed on the pipe between the cyclone separator and the coarse bag filter.

2. The strontium carbonate rapid drying apparatus according to claim 1, characterized in that, The water-cooling mechanism includes an outer cylinder and an inner cylinder, with a jacket formed between the outer cylinder and the inner cylinder.

3. The strontium carbonate rapid drying apparatus according to claim 2, characterized in that, A stirring spiral is installed inside the inner cylinder, and the stirring spiral is driven to rotate by a motor.

4. The strontium carbonate rapid drying apparatus according to claim 3, characterized in that, The jacket has a water inlet and a water outlet, and the inner cylinder is provided with a feed inlet and a discharge outlet.

5. The strontium carbonate rapid drying apparatus according to claim 4, characterized in that, The strontium carbonate moves toward the outlet in a direction opposite to the flow direction of the cooling water.

6. The strontium carbonate rapid drying apparatus according to claim 5, characterized in that, The water inlet of the water cooling mechanism is lower than the water outlet.

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