Practical and efficient secondary-heating calcium chloride sheet drying device

Abstract

The utility model relates to the technical field of chemical industry and non-ferrous metal polycrystalline silicon production, in particular to an auxiliary heat practical efficient calcium chloride sheet drying device which comprises a material outlet end of a packaging machine, a material inlet end of a drying fluidized bed, a material outlet end of the drying fluidized bed, a material inlet end of a cooling fluidized bed and a material outlet end of a drying fluidized bed. Conveying equipment is arranged at the material outlet end of the cooling fluidized bed and the material inlet end of the packaging machine; the waste gas outlet end of the dry dust removal equipment and the waste gas outlet end of the cooling fluidized bed are connected with the dry dust removal equipment and the wet dust removal equipment; the hot air inlet end of the dry dust removal equipment is connected with an air heat exchanger; the wet type dust removal equipment is connected with an exhaust funnel, an induced draft fan is arranged between the exhaust funnel and the wet type dust removal equipment, and according to the energy utilization concept of sustainable development, endless loss of steam heat and waste of water resources are avoided, the production cost of enterprises is effectively reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical and non-ferrous metal polycrystalline silicon production technology, and in particular to a practical and efficient calcium chloride flake drying device with auxiliary heat. Background Technology

[0002] In modern chemical production, the drying process of calcium chloride tablets is a crucial step in ensuring product quality and production efficiency. With the continuous development of the chemical industry, the requirements for the quantity and quality of calcium chloride tablets are increasing, while environmental regulations are becoming increasingly stringent. Traditional calcium chloride tablet drying technologies are facing numerous challenges.

[0003] Traditional calcium chloride flake drying equipment suffers from significant energy inefficiencies. Typically, the heat provided by the heating source is not fully utilized, with large amounts of heat being directly emitted into the atmosphere along with the exhaust gas, resulting in severe energy waste. This not only increases production costs for enterprises but also contradicts development principles. Furthermore, the exhaust gas treatment systems of traditional drying equipment are rudimentary and ineffective in removing pollutants such as dust and acidic gases. For example, some simple drying equipment uses only a single bag filter or a basic water washing device. Bag filters are prone to clogging, requiring frequent bag replacements, increasing equipment maintenance costs and downtime. Simple water washing devices have limited absorption capacity for acidic gases and cannot achieve efficient water recycling, easily causing secondary pollution.

[0004] Furthermore, traditional drying equipment lacks sophisticated design in material conveying and product cooling. Material conveying can lead to problems such as accumulation and spillage, affecting the continuity and stability of production; slow and uneven product cooling can cause calcium chloride tablets to clump and deteriorate, reducing the product's market competitiveness. Therefore, developing a novel, practical, and efficient calcium chloride tablet drying device with auxiliary heating is of great practical significance. It can effectively solve the problems of energy waste, exhaust gas pollution, and unstable product quality associated with traditional drying equipment, and promote technological progress and development in the calcium chloride tablet production industry. Utility Model Content

[0005] To address the shortcomings of the aforementioned background technology, this utility model proposes a practical and efficient calcium chloride tablet drying device with auxiliary heat, which solves the technical problems of some simple drying equipment often having low drying efficiency, requiring a large amount of energy and a long time to reduce the moisture content of calcium chloride tablets to a suitable level, and improper waste gas treatment during the drying process.

[0006] The technical solution of this utility model is implemented as follows: A practical and efficient calcium chloride tablet drying device with auxiliary heat, comprising a slicer, a drying sulfidation bed, a cooling fluidized bed, and a packaging machine, characterized in that: the material outlet end of the packaging machine and the material inlet end of the drying sulfidation bed, the material outlet end of the drying sulfidation bed and the material inlet end of the cooling fluidized bed, and the material outlet end of the cooling fluidized bed and the material inlet end of the packaging machine are all equipped with conveying equipment; the exhaust gas outlet end of the dry dust removal equipment and the exhaust gas outlet end of the cooling fluidized bed are both connected to dry dust removal equipment and wet dust removal equipment; the hot gas inlet end of the dry dust removal equipment is connected to an air heat exchanger; the wet dust removal equipment is connected to an exhaust stack, and an induced draft fan is provided between the exhaust stack and the wet dust removal equipment.

[0007] As a preferred embodiment, the dry dust removal equipment includes two sets of cyclone dust collectors. The exhaust gas outlet of the dry dust removal equipment and the exhaust gas outlet of the cooling fluidized bed are respectively connected to the inlet of the two sets of cyclone dust collectors. The exhaust gas outlets of the two sets of cyclone dust collectors are combined into one line and connected to the wet dust removal equipment.

[0008] As a preferred embodiment, the wet dust removal equipment includes two sets of water droplet dust collectors connected in series. The outlet of the last water droplet dust collector is connected to the inlet of the exhaust stack. Both sets of water droplet dust collectors are equipped with spraying equipment and circulation equipment.

[0009] As a preferred embodiment, the spraying equipment includes a water storage tank and a dust washing pump. Both the water storage tank and the dust washing pump are connected to the water droplet dust collector via inlet and outlet pipes. The water droplet dust collector is equipped with spray heads, which are connected to the dust washing pump via a water lifting pipe. Valve bodies are installed on the inlet pipe, the outlet pipe, and the water lifting pipe.

[0010] As a preferred embodiment, the circulating equipment includes an upper water tank and a lower water tank. The upper water tank is connected to one of the water droplets via an inlet pipe, and the lower water tank is connected to the water intake pipe of the other water droplet via a return water pipe. The two sets of water droplets are connected by an auxiliary pipe, and a switching valve is provided on the return water pipe.

[0011] As a preferred embodiment, both sets of water mist dust collectors are equipped with a wire mesh demister located at the upper end of the spray head.

[0012] As a preferred embodiment, the air heat exchanger includes a steam inlet pipe, an air filter, and a steam condensate outlet pipe. The steam inlet pipe, the air filter, and the steam condensate outlet pipe are connected to the air heat exchanger via a steam inlet pipe, an air filter pipe, and a steam condensate pipe, respectively. The steam inlet pipe is equipped with a switch, the air filter pipe is equipped with a blower, and the steam condensate pipe is equipped with a condensate tank and a switch.

[0013] As a preferred embodiment, the cooling fluidized bed is equipped with a cooling fan at its bottom.

[0014] As a preferred embodiment, the conveying equipment is a bucket belt conveyor.

[0015] The beneficial effects of this utility model are:

[0016] I. High-efficiency drying and product quality improvement: Through the coordinated operation of the slicing machine, drying fluidized bed, cooling fluidized bed, and packaging machine, and with the help of precisely designed conveying equipment (bucket belt conveyor), the drying process of calcium chloride tablets is made continuous and automated. The drying fluidized bed provides a stable and suitable drying environment, ensuring that the moisture in the calcium chloride tablets is effectively removed, so that the product reaches the ideal dryness and purity requirements. The cooling fluidized bed can quickly and uniformly cool the high-temperature product after drying, avoiding quality problems such as product clumping and deterioration caused by uneven cooling. This greatly improves the overall quality of calcium chloride tablets, making them more in line with the market demand for high-quality calcium chloride tablets and enhancing the product's competitiveness in the market.

[0017] II. High Energy Efficiency: The air heat exchanger is key to the energy saving of this device. Steam is introduced through an external steam pipe and exchanges heat with air that has been filtered by an air filter and blown in by a blower in the air heat exchanger. On the one hand, the heat of the steam is fully recovered and utilized, heating the cold air before it is sent to the dry dust removal equipment, providing thermal energy support for the dust removal process and reducing additional heating energy consumption. On the other hand, the condensate produced by steam condensation flows into a condensate tank through a steam condensate pipe for collection, which can be further recycled or properly treated, avoiding the needless loss of steam heat and the waste of water resources. This effectively reduces the company's production costs, improves energy efficiency, and conforms to the concept of sustainable energy utilization.

[0018] III. Excellent dust removal and environmental protection performance: The dry dust removal equipment adopts two sets of cyclone dust collectors. Its unique structure and working principle enable it to efficiently remove most of the dust particles in the exhaust gas. The cyclone dust collector uses centrifugal force to separate dust from the airflow. It has the advantages of large processing capacity, simple structure and convenient maintenance, which can effectively reduce the working pressure of subsequent dust removal equipment and reduce equipment operating costs.

[0019] The wet scrubbing equipment consists of two sets of water droplets working in series, equipped with a complete spraying and circulation system. The spraying system, through the coordinated action of a water storage tank, dust pump, inlet pipe, outlet pipe, water lifting pipe, and valves, generates a fine and uniform water mist that fully contacts the exhaust gas, efficiently absorbing acidic gases (such as hydrogen chloride) and residual dust, further purifying the exhaust gas. The circulation system, through the rational design of an upper water tank, return water tank, inlet pipe, return pipe, auxiliary pipes, and switching valves, achieves water resource recycling, reducing fresh water consumption and minimizing the environmental impact of wastewater discharge. Furthermore, the wire mesh demister inside the water droplet scrubbing unit effectively removes tiny droplets and mist entrained in the exhaust gas, preventing them from entering the exhaust stack and causing secondary pollution. The exhaust gas treated by this device meets relevant environmental standards, reducing pollution to the surrounding environment, lowering the risks faced by the company due to environmental issues, and helping the company establish a positive environmental image.

[0020] IV. Equipment Stability and Reliability: The components of this unit are tightly and rationally connected. The selection and parameter design of each piece of equipment have been precisely calculated and optimized. For example, the cooling fan at the bottom of the cooling fluidized bed can provide a stable cooling air volume and air pressure according to the cooling requirements, ensuring the consistency of the cooling effect. The stable operation of the conveying equipment (bucket belt conveyor) ensures the smooth transfer of materials between the equipment, reducing the risk of material spillage and blockage. The regular maintenance and cleaning mechanism of each dust removal equipment (such as cleaning the ash hopper of the cyclone dust collector, and checking and maintaining the wire mesh demister) ensures the long-term stable operation of the equipment, reduces the equipment failure rate, improves the reliability and service life of the entire drying unit, reduces production interruptions and maintenance costs caused by equipment failures, and provides a strong guarantee for the stable production of the enterprise.

[0021] In summary, the auxiliary heat practical and efficient calcium chloride flake drying device of the present invention has significant advantages in improving product quality, reducing energy consumption, enhancing environmental performance, and ensuring stable equipment operation. It has broad application prospects and good economic and social benefits.

[0022] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0025] Figure 2 This is a schematic diagram of the dry dust removal equipment of this utility model;

[0026] Figure 3 This is a schematic diagram of the wet dust removal equipment of this utility model;

[0027] Figure 4 This is a schematic diagram of the air heat exchanger of this utility model;

[0028] In the diagram: 1: Slicer; 2: Drying fluidized bed; 3: Cooling fluidized bed; 4: Packaging machine; 5: Dry dust collector; 6: Wet dust collector; 7: Air heat exchanger; 8: Exhaust stack; 9: Exhaust fan; 10: Cyclone dust collector; 11: Water dust collector; 12: Water storage tank; 13: Dust pump; 14: Inlet pipe; 15: Outlet pipe; 16: Spray head; 17: Water lifting pipe; 18: Valve body. 19: Water inlet tank; 20: Water return tank; 21: Water inlet pipe; 22: Water return pipe; 23: Auxiliary pipe; 24: Switching valve; 25: Wire mesh demister; 26: Steam inlet pipe; 27: Air filter; 28: Steam condensate outlet pipe network; 29: Steam inlet pipe; 30: Air filter pipe; 31: Steam condensate pipe; 32: Blower; 33: Condensate tank; 34: Cooling fan. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1: A practical and efficient calcium chloride tablet drying device with auxiliary heating, comprising a slicer 1, a drying sulfidation bed 2, a cooling fluidized bed 3, and a packaging machine 4, characterized in that: the material outlet end of the packaging machine 4 is connected to the material inlet end of the drying sulfidation bed 2, the material outlet end of the drying sulfidation bed 2 is connected to the material inlet end of the cooling fluidized bed 3, and the material outlet end of the cooling fluidized bed 3 is connected to the material inlet end of the packaging machine 4, all equipped with conveying equipment; the exhaust gas outlet end of the dry dust collector 5 and the exhaust gas outlet end of the cooling fluidized bed 3 are both connected to a dry dust collector 5 and a wet dust collector 6; the hot gas inlet end of the dry dust collector 5 is connected to an air heat exchanger 7; the wet dust collector 6 is connected to an exhaust stack 8, and an induced draft fan 9 is provided between the exhaust stack 8 and the wet dust collector 6.

[0031] refer to Figure 1 Installation and connection of the equipment: The slicer 1, the drying fluidized bed 2, the cooling fluidized bed 3 and the packaging machine 4 are placed in a suitable production site in sequence according to the process. Ensure that the material outlet end of the packaging machine 4 is tightly connected to the material inlet end of the drying fluidized bed 2 through the conveying equipment (such as belt conveyor or screw conveyor) so that the substandard calcium chloride flakes can be sent back to the drying fluidized bed 2 for re-drying.

[0032] Connect the material outlet of the drying fluidized bed 2 to the material inlet of the cooling fluidized bed 3 using the same conveying equipment to ensure that the dried high-temperature calcium chloride flakes can smoothly enter the cooling fluidized bed 3 for cooling and temperature reduction, so that they reach a suitable temperature for packaging and storage.

[0033] The cooling fluidized bed 3 and the packaging machine 4 are also connected by conveying equipment, so that the cooled calcium chloride tablets can be conveyed to the packaging machine 4 for packaging.

[0034] The dry dust collector 5 is installed in a suitable location, with its exhaust gas outlet and the exhaust gas outlet of the cooling fluidized bed 3 both connected to the dry dust collector 5 and the wet dust collector 6 via pipes. The pipe connections must be well sealed to prevent exhaust gas leakage.

[0035] Connect the air heat exchanger 7 to the hot air inlet of the dry dust collector 5 to ensure effective heat exchange, so that the hot air entering the dry dust collector 5 can be used rationally and improve energy efficiency.

[0036] The wet dust collector 6 is connected to the exhaust stack 8, and an induced draft fan 9 is installed between the exhaust stack 8 and the wet dust collector 6. The power of the induced draft fan 9 should be reasonably selected according to the waste gas treatment capacity of the entire device to ensure that the treated waste gas can be smoothly extracted and discharged into the atmosphere.

[0037] The operation process of the device is as follows: The raw material of wet calcium chloride flakes first enters the slicer 1. The slicer 1 cuts the raw material of calcium chloride flakes into uniform flakes according to the set size requirements so that the subsequent drying process can be more uniform and efficient. The cut calcium chloride flakes are conveyed into the drying and sulfurization bed 2.

[0038] In the dry vulcanizing bed 2, calcium chloride flakes are dried using hot air or other heating media. The temperature, wind speed, and other parameters inside the dry vulcanizing bed 2 must be precisely controlled according to the characteristics of the calcium chloride flakes and the drying requirements. The exhaust gas generated during the drying process carries dust and other impurities. A portion of the exhaust gas enters the dry dust removal equipment 5 through a pipeline. In the dry dust removal equipment 5, cold air introduced by the air heat exchanger 7 is used for preliminary heat exchange and dust removal, which lowers the temperature of the exhaust gas and separates some of the dust.

[0039] After initial drying in the drying fluidized bed 2, the calcium chloride flakes are conveyed into the cooling fluidized bed 3. The cooling fluidized bed 3 cools the calcium chloride flakes by introducing cold air or other cooling media to bring them to the required temperature for packaging. The exhaust gas generated by the cooling fluidized bed 3 is also treated in the dry dust collector 5 and the wet dust collector 6.

[0040] The waste gas treated by the dry dust collector 5 then enters the wet dust collector 6. The wet dust collector 6 uses spraying and other methods to further remove acidic gases (such as hydrogen chloride) and residual dust particles from the waste gas. The waste gas treated by the wet dust collector 6 is discharged into the atmosphere through the exhaust stack 8 under the action of the induced draft fan 9. The discharged waste gas must meet the relevant environmental protection standards.

[0041] After being cooled by the cooling fluidized bed 3, the calcium chloride tablets are conveyed into the packaging machine 4. The packaging machine 4 packages the calcium chloride tablets according to the set packaging specifications and requirements. The packaged finished calcium chloride tablets can then be sold on the market or further stored, transported, etc. During the entire operation of the device, the slicing machine 1, the drying fluidized bed 2, the cooling fluidized bed 3, the packaging machine 4, and the dust removal equipment should be regularly maintained and inspected to ensure that the device can operate continuously, stably, and efficiently.

[0042] As a further embodiment, the dry dust removal equipment 5 includes two sets of cyclone dust collectors 10. The exhaust gas outlet end of the dry dust removal equipment 5 and the exhaust gas outlet end of the cooling fluidized bed 3 are respectively connected to the inlet end of the two sets of cyclone dust collectors 10. The exhaust gas outlet ends of the two sets of cyclone dust collectors 10 are combined into one line and connected to the wet dust removal equipment 6.

[0043] refer to Figure 1 , Figure 2During use, the two sets of cyclone dust collectors 10 are installed in appropriate positions according to the design requirements, ensuring that the exhaust gas outlet end of the dry dust removal equipment 5 and the exhaust gas outlet end of the cooling fluidized bed 3 are tightly connected to the inlet end of the two sets of cyclone dust collectors 10 through sealed pipes. The diameter and length of the pipes should be reasonably designed according to the exhaust gas flow rate and velocity to reduce airflow resistance.

[0044] When the exhaust gas enters the cyclone dust collector 10, the centrifugal force causes the dust particles in the exhaust gas to rotate and fall along the wall of the collector, separating from the airflow and falling into the ash hopper. The outlets of the two sets of cyclone dust collectors 10 are combined into one line and connected to the inlet of the wet dust collector 6. The combined pipeline must ensure smooth gas flow and no leakage. During operation, the ash hopper of the cyclone dust collector 10 should be cleaned regularly to prevent dust accumulation from affecting the dust removal effect.

[0045] As a further embodiment, the wet dust removal equipment 6 includes two sets of water droplet dust collectors 11 connected in series. The outlet of the last water droplet dust collector 11 is connected to the inlet of the exhaust stack 8. Both sets of water droplet dust collectors 11 are equipped with spraying equipment and circulation equipment.

[0046] refer to Figure 1 , Figure 3 In use, two sets of water droplet dust collectors 11 are installed in series to ensure that the gas passes through the two water droplet dust collectors 11 in sequence. The air inlet end of the first water droplet dust collector 11 is connected to the air outlet end of the cyclone dust collector 10, and the air outlet end of the last water droplet dust collector 11 is connected to the air inlet end of the exhaust stack 8. The connecting pipes should be made of corrosion-resistant materials to cope with the acidic components in the exhaust gas.

[0047] As a further embodiment, the spraying equipment includes a water storage tank 12 and a dust washing pump 13. The water storage tank 12 and the dust washing pump 13 are both connected to the water droplet dust collector 11 through an inlet pipe 14 and an outlet pipe 15. The water droplet dust collector 11 is equipped with a spray head 16, which is connected to the dust washing pump 13 through a water lifting pipe 17. The inlet pipe 14, the outlet pipe 15, and the water lifting pipe 17 are all equipped with valve bodies 18.

[0048] During use, the installation and operation of the spraying equipment are as follows: The water storage tank 12 is placed in a suitable location, and its capacity is determined according to the water consumption and circulating water requirements of the water droplet dust collector 11. The dust pump 13 is installed near the water storage tank 12 and is connected to the water droplet dust collector 11 through the inlet pipe 14 and the outlet pipe 15 to form a water circulation loop.

[0049] Spray heads 16 are installed inside the water droplet dust collector 11. The spray heads 16 are connected to the dust washing pump 13 through the water lifting pipe 17. Valve bodies 18, such as valves and check valves, are installed on the inlet pipe 14, outlet pipe 15 and water lifting pipe 17 to control the direction, flow rate and start / stop of the water flow. When the dust washing pump 13 is started, the water in the water storage tank 12 is pressurized by the dust washing pump 13 and transported to the spray heads 16 through the water lifting pipe 17 to form water mist, which fully contacts the exhaust gas, so that the acidic gas and residual dust in the exhaust gas are absorbed and captured.

[0050] As a further embodiment, the circulation device includes an upper water tank 19 and a return water tank 20. The upper water tank 19 is connected to one of the water droplet dust collectors 11 via an inlet water pipe 21. The return water tank 20 is connected to the water lifting pipe 17 of another water droplet dust collector 11 via a return water pipe 22. The two sets of water droplet dust collectors 11 are connected by an auxiliary pipe 23. A switching valve 24 is provided on the return water pipe 22.

[0051] refer to Figure 1 , Figure 3 During use, the upper water tank 19 is connected to one of the water droplet dust collectors 11 through the water inlet pipe 21 to replenish fresh water or adjust the water level in the water droplet dust collector 11. The return water tank 20 is connected to the water lifting pipe 17 of the other water droplet dust collector 11 through the return water pipe 22 to collect the treated wastewater for recycling. The two sets of water droplet dust collectors 11 are connected by an auxiliary pipe 23 to balance the pressure and water level in the two dust collectors. A switching valve 24 is installed on the return water pipe 22 to switch the wastewater return path or perform wastewater discharge treatment according to the actual operating conditions. During operation, the water quality in the tank should be monitored regularly, and water should be changed or chemical agents should be added according to the water quality to ensure the spraying effect.

[0052] As a further embodiment, the two sets of water mist dust collectors 11 are provided with a wire mesh demister 25 located at the upper end of the spray head 16.

[0053] refer to Figure 3 When using the wire mesh demister 25, the wire mesh demister 25 is installed inside the two sets of water mist dust collectors 11 at the top of the spray head 16. The wire mesh demister 25 can further remove the tiny droplets and mists entrained in the exhaust gas, improving the purification effect of the exhaust gas. The wire mesh demister 25 should be checked regularly to see if the wire mesh is blocked or damaged. If there is a problem, it should be cleaned or replaced in time.

[0054] As a further embodiment, the air heat exchanger 7 includes a steam inlet pipe 26, an air filter 27, and a steam condensate outlet pipe 28. The steam inlet pipe 26, the air filter 27, and the steam condensate outlet pipe 28 are connected to the air heat exchanger 7 via a steam inlet pipe 29, an air filter pipe 30, and a steam condensate pipe 31, respectively. The steam inlet pipe 29 is equipped with a switch, the air filter pipe 30 is equipped with a blower 32, and the steam condensate pipe 31 is equipped with a condensate tank 33 and a switch.

[0055] refer to Figure 1 , Figure 4 During use, the steam inlet pipe 26 is connected to the air heat exchanger 7 via the steam inlet pipe 29. The switch on the steam inlet pipe 29 is used to control the steam flow rate, which is adjusted according to the heat exchange requirements and steam pressure of the air heat exchanger 7. The air filter 27 is connected to the air heat exchanger 7 via the air filter pipe 30. The blower 32 on the air filter pipe 30 is used to provide airflow power, so that the air enters the air heat exchanger 7 after being filtered by the air filter 27. The air filter 27 needs to be cleaned or replaced regularly to prevent dust blockage from affecting airflow and heat exchange effect. The cleaning or replacement cycle can be determined according to the ambient air quality and operating time, such as cleaning once a week or replacing once a month.

[0056] The steam condensate is connected to the air heat exchanger 7 via the steam condensate pipe 31 to the pipeline network 28. The steam condensate pipe 31 is equipped with a condensate tank 33 and a switch. In the air heat exchanger 7, after the steam exchanges heat with the air, the steam condenses into liquid and flows into the condensate tank 33 through the steam condensate pipe 31 for collection. The condensate tank 33 needs to be discharged periodically to prevent overflow. The discharge can be automatic or manual periodically based on the signal from the condensate tank level sensor. Through the air heat exchanger 7, the heat of the steam is recovered and utilized. The cold air is then heated and sent to the dry dust removal equipment 5, which improves the energy utilization rate and reduces the cost of waste gas treatment.

[0057] As a further embodiment, the cooling fluidized bed 3 is provided with a cooling fan 34 at the bottom.

[0058] refer to Figure 1During use, a cooling fan 34 is installed at the bottom of the cooling fluidized bed 3. The air volume and air pressure of the cooling fan 34 should be selected according to the size of the cooling fluidized bed 3 and the cooling requirements of the calcium chloride sheets. After the cooling fan 34 is started, cold air is blown into the cooling fluidized bed 3, so that the high-temperature calcium chloride sheets dried by the drying sulfurized bed 2 can fully contact the cold air in the cooling fluidized bed 3 to achieve rapid and uniform cooling. The fluidization state inside the cooling fluidized bed 3 should be optimized by adjusting the air volume and air pressure of the cooling fan 34, as well as the feed rate of the material and the opening ratio of the distribution plate, to ensure that the calcium chloride sheets do not clump or stick to the wall during the cooling process, thus ensuring product quality. At the same time, the exhaust gas generated by the cooling fluidized bed 3 and the exhaust gas generated by the drying sulfurized bed 2 are sent to the dry dust collector 5 and the wet dust collector 6 for treatment to reduce the pollution of the exhaust gas to the environment.

[0059] As a further embodiment, the conveying equipment is a bucket belt conveyor.

[0060] Throughout the operation of the calcium chloride tablet drying unit, a comprehensive monitoring system must be established to monitor and record the operating parameters of each piece of equipment (such as temperature, pressure, flow rate, liquid level, etc.) in real time. The operating status of the equipment should be adjusted in a timely manner according to the production situation to ensure that the unit can operate efficiently, stably, and environmentally friendly, and produce calcium chloride tablets that meet quality standards.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "on top" can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A practical and efficient calcium chloride tablet drying device with auxiliary heating, comprising a slicer (1), a drying sulfidation bed (2), a cooling fluidized bed (3), a packaging machine (4), and a dry dust removal device (5), characterized in that: The packaging machine (4) is equipped with conveying equipment at its material outlet end and the material inlet end of the drying vulcanizing bed (2), and at its material outlet end and the material inlet end of the cooling fluidized bed (3), and at its material outlet end and the material inlet end of the packaging machine (4); the dry dust removal equipment (5) is connected to a dry dust removal equipment (5) and a wet dust removal equipment (6) at its gas exhaust outlet end and the exhaust outlet end of the cooling fluidized bed (3); the dry dust removal equipment (5) is connected to an air heat exchanger (7) at its hot gas inlet end; the wet dust removal equipment (6) is connected to an exhaust stack (8), and an induced draft fan (9) is provided between the exhaust stack (8) and the wet dust removal equipment (6).

2. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 1, characterized in that, The dry dust removal equipment (5) includes two sets of cyclone dust collectors (10). The gas exhaust outlet of the dry dust removal equipment (5) and the exhaust outlet of the cooling fluidized bed (3) are respectively connected to the air inlet of the two sets of cyclone dust collectors (10). The exhaust outlets of the two sets of cyclone dust collectors (10) are combined into one line and connected to the wet dust removal equipment (6).

3. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 2, characterized in that, The wet dust removal equipment (6) includes two sets of water droplet dust collectors (11), which are connected in series. The outlet of the last water droplet dust collector (11) is connected to the inlet of the exhaust pipe (8). Both sets of water droplet dust collectors (11) are equipped with spraying equipment and circulation equipment.

4. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 3, characterized in that, The spraying equipment includes a water storage tank (12) and a dust pump (13). The water storage tank (12) and the dust pump (13) are connected to the water mist dust collector (11) through an inlet pipe (14) and an outlet pipe (15). The water mist dust collector (11) is equipped with a spray head (16). The spray head (16) is connected to the dust pump (13) through a water lifting pipe (17). The inlet pipe (14), the outlet pipe (15), and the water lifting pipe (17) are all equipped with valve bodies (18).

5. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 4, characterized in that, The circulating equipment includes an upper water tank (19) and a return water tank (20). The upper water tank (19) is connected to one of the water droplet dust collectors (11) via an inlet pipe (21). The return water tank (20) is connected to the water lifting pipe (17) of another water droplet dust collector (11) via a return water pipe (22). The two sets of water droplet dust collectors (11) are connected by an auxiliary pipe (23). A switching valve (24) is provided on the return water pipe (22).

6. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 5, characterized in that, The two sets of water mist dust collectors (11) are equipped with a wire mesh demister (25) located at the upper end of the spray head (16).

7. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 1, characterized in that, The air heat exchanger (7) includes a steam inlet pipe (26), an air filter (27), and a steam condensate outlet pipe (28). The steam inlet pipe (26), the air filter (27), and the steam condensate outlet pipe (28) are connected to the air heat exchanger (7) via a steam inlet pipe (29), an air filter pipe (30), and a steam condensate pipe (31), respectively. The steam inlet pipe (29) is equipped with a switch. The air filter pipe (30) is equipped with a blower (32). The steam condensate pipe (31) is equipped with a condensate tank (33) and a switch.

8. The practical and efficient calcium chloride flake drying device with auxiliary heat according to claim 1, characterized in that, The cooling fluidized bed (3) is equipped with a cooling fan (34) at the bottom.

9. A practical and efficient calcium chloride flake drying device with auxiliary heating according to any one of claims 1-5, characterized in that, The conveying equipment is a bucket belt conveyor.

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