A drying equipment suitable for the synthesis of AMPS copolymer water-reducing dispersant

Abstract

This invention discloses a drying device suitable for the synthesis of AMPS copolymer water-reducing dispersant, comprising: a drying chamber, a hot air duct connector, an atomizer, and a powder collection system. The drying chamber has an inlet and an outlet. The outlet end of the atomizer and the hot air duct connector are connected to the inlet of the drying chamber, and the powder collection system is connected to the outlet of the drying chamber. The hot air duct connector is coaxially arranged with the atomizer, and at least one guide plate is provided at the connection point of the hot air duct connector. The guide plate is a flat plate or an arc-shaped structure, and its installation angle relative to the axis of the hot air duct connector is 30° to 60°. The bottom of the drying chamber is connected to the powder collection system. The drying chamber has a conical structure with a cone angle of 15° to 30°. In this invention, the airflow distribution is optimized through the coaxial hot air duct connector and the guide plate, and the conical drying chamber improves material flow efficiency, enhances drying uniformity, and improves powder collection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and more specifically, to a drying device suitable for the synthesis of AMPS copolymer water-reducing dispersant. Background Technology

[0002] The drying equipment after the synthesis of AMPS copolymer water-reducing dispersant is usually a spray dryer. This atomizes the liquid polymer solution into tiny droplets, which evaporate the solvent in a hot air stream to produce a powder with uniform particle size. Traditional equipment typically includes a drying chamber, hot air duct joints, an atomizer, and a powder collection system. However, existing technologies have several shortcomings: low mixing efficiency between hot air and droplets leads to uneven drying and affects product quality; material easily accumulates on the inner walls of the drying chamber, making cleaning difficult and resulting in waste; and low powder collection efficiency leads to fine powder being emitted with the exhaust gas, increasing material loss and environmental pollution. Existing improved technologies sometimes optimize performance by installing turbulence devices at the hot air duct joints or adjusting the drying chamber structure, but these are often limited by complex structures, high manufacturing costs, or poor adaptability to materials.

[0003] In summary, how to make airflow disturbances better meet the needs of industrial production during the post-synthesis processing of high-viscosity polymers is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The main objective of this invention is to provide a drying equipment suitable for the synthesis of AMPS copolymer water-reducing dispersant that improves the mixing efficiency of hot air and droplets and optimizes the drying uniformity.

[0005] Another objective of this invention is to provide a drying equipment suitable for the synthesis of AMPS copolymer water-reducing dispersant, which reduces material accumulation on the walls of the drying chamber, enhances powder collection efficiency, and reduces material loss.

[0006] To achieve the above objectives, according to one aspect of this utility model, a drying device suitable for the synthesis of AMPS copolymer water-reducing dispersant is provided, comprising: a drying chamber, a hot air duct connector, an atomizer, and a powder collection system. The drying chamber has an inlet and an outlet. The outlet end of the atomizer and the hot air duct connector are connected to the inlet of the drying chamber, and the powder collection system is connected to the outlet of the drying chamber. The hot air duct connector is coaxially arranged with the atomizer, and at least one guide plate is provided at the connection point of the hot air duct connector. The guide plate is a flat plate or an arc-shaped structure, and its installation angle relative to the axis of the hot air duct connector is 30° to 60°. The bottom of the drying chamber is connected to the powder collection system. The drying chamber has a conical structure with a cone angle of 15° to 30°. In this solution, the airflow distribution is optimized by the coaxial hot air duct connector and the guide plate, and the conical drying chamber improves material flow efficiency, enhances drying uniformity, and increases powder collection efficiency.

[0007] Preferably, the number of guide vanes is 1 to 3, and the width of the guide vanes is 20% to 50% of the diameter of the hot air duct joint. In this solution, the width of the guide vanes is adapted to the duct diameter, which improves the airflow mixing efficiency and reduces energy loss.

[0008] Preferably, the guide plate is fixed to the inner wall of the hot air inlet, and the surface of the guide plate is coated with a polytetrafluoroethylene (PTFE) coating. In this design, the PTFE-coated guide plate reduces material adhesion and extends the service life of the equipment.

[0009] Preferably, the outlet of the drying chamber is located at the bottom. In this design, the bottom outlet facilitates powder discharge and reduces material accumulation in the drying chamber.

[0010] Preferably, the inner wall of the drying chamber is provided with spiral baffles along the axial direction. In this design, the spiral baffles guide airflow and material flow, reduce accumulation on the inner wall, and improve drying efficiency.

[0011] Preferably, multiple guide vanes are arranged in a circumferential array on the inner wall of the hot air duct joint. In this design, multiple guide vanes can enhance the airflow guiding effect.

[0012] Preferably, the atomizer is an ultrasonic atomizer or an electrostatic atomizer. In this solution, the ultrasonic or electrostatic atomizer improves the atomization fineness and enhances the droplet drying effect.

[0013] Preferably, the powder collection system includes a multi-stage cyclone separator and a bag filter. The inlet of the cyclone separator is connected to the bottom of the drying chamber, and the outlet of the cyclone separator is connected to the bag filter. In this solution, the multi-stage cyclone separator and bag filter improve the fine powder collection efficiency and reduce material loss.

[0014] Preferably, the top of the drying chamber is equipped with multiple nozzles connected to a high-pressure water tank. In this design, the top nozzle system facilitates cleaning of the drying chamber, reducing material accumulation and maintenance costs.

[0015] Preferably, the number of nozzles is evenly distributed circumferentially along the top of the drying chamber. In this design, the evenly distributed nozzles and suitable orifice diameter ensure efficient cleaning and improve the cleaning effect of the equipment.

[0016] By applying the technical solution of this utility model, the hot air duct connector is coaxially arranged with the atomizer, combined with a guide plate with an installation angle of 30° to 60°, effectively optimizing airflow distribution, promoting uniform mixing of hot air and droplets, and improving drying efficiency and product quality. The 15° to 30° conical drying chamber design guides the smooth flow of materials, reduces material accumulation on the inner wall, and lowers cleaning difficulty and material waste. The powder collection system connected to the bottom further improves powder collection efficiency, reduces fine powder emissions with the exhaust gas, and meets energy-saving and environmental protection requirements. These improvements not only overcome the defects of uneven airflow distribution and material deposition in traditional equipment, but also enhance the equipment's adaptability to various materials, reduce production costs, and achieve the goal of efficient, uniform drying and high-quality powder output. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A perspective view of a drying apparatus for the synthesis of AMPS copolymer water-reducing dispersant according to the present invention is shown.

[0019] Figure 2 A front view schematic diagram of a drying apparatus for the synthesis of AMPS copolymer water-reducing dispersant according to the present invention is shown;

[0020] Figure 3 It shows along Figure 2 A sectional view is obtained by cutting along section line AA in the diagram;

[0021] Figure 4 A perspective view of the hot air duct interface for a drying equipment for synthesizing AMPS copolymer water-reducing dispersant according to the present invention is shown.

[0022] Figure 5 A perspective view of the drying chamber of a drying apparatus for the synthesis of AMPS copolymer water-reducing dispersant according to the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 1-Drying chamber; 11-Spiral baffle; 2-Hot air duct joint; 21-Guide plate; 3-Hot air duct body; 4-Atomizer duct; 5-Powder collection system duct. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] According to one embodiment of the present invention, a drying device suitable for the synthesis of AMPS copolymer water-reducing dispersant is provided. This device aims to overcome the problems faced by traditional spray dryers when processing high-viscosity polymer solutions, such as uneven drying, severe material accumulation on the inner wall, and low powder collection efficiency, thereby achieving a highly efficient and uniform drying process and obtaining high-quality powder products. The device includes: a drying chamber 1, a hot air duct connector 2, an atomizer, and a powder collection system. The drying chamber 1 has an inlet and an outlet. The outlet end of the atomizer and the hot air duct connector 2 are connected to the inlet of the drying chamber 1, and the powder collection system is connected to the outlet of the drying chamber 1. The hot air duct connector 2 is coaxially arranged with the atomizer, and at least one guide plate 21 is provided at the connection point of the hot air duct connector 2. The guide plate 21 is a flat plate or an arc-shaped structure, and its installation angle relative to the axis of the hot air duct connector 2 is 30° to 60°. The bottom of the drying chamber 1 is connected to the powder collection system. The drying chamber 1 has a conical structure with a cone angle of 15° to 30°. In this scheme, the airflow distribution is optimized by using the coaxial hot air pipe joint 2 and the guide plate 21, and the conical drying chamber 1 improves the material flow efficiency, enhances the drying uniformity and powder collection efficiency.

[0027] According to one embodiment of this utility model, the drying equipment for synthesizing AMPS copolymer water-reducing dispersant mainly consists of the following core components: a drying chamber 1, a hot air pipe connector 2, an atomizer, and a powder collection system. The drying chamber 1 is the key location for drying the liquid AMPS copolymer solution. Unlike traditional cylindrical or square drying chambers 1, the drying chamber 1 in this embodiment adopts a conical structure, with its bottom gradually narrowing to form a cone with a cone angle between 15° and 30°. This conical design significantly improves the flowability of the material within the drying chamber 1. Since the AMPS copolymer solution gradually loses moisture and forms viscous semi-solid or solid particles during the drying process, the conical bottom can guide these particles towards the bottom outlet by gravity, thereby reducing material accumulation on the inner wall of the drying chamber 1, reducing the difficulty and frequency of cleaning, and minimizing material waste.

[0028] According to one embodiment of this utility model, in order to further improve drying efficiency and reduce wall deposition, a spiral baffle 11 is provided along the axial direction on the inner wall of the drying chamber 1. The spiral baffle 11 is spiral in shape, extending from the upper part to the lower part of the drying chamber 1, forming a certain inclined angle. When hot air and atomized droplets rotate and descend in the drying chamber 1, the spiral baffle 11 can guide the airflow and material particles to move along a specific path, prolonging the residence time of the material in the drying chamber 1, thereby promoting more complete heat exchange and moisture evaporation. At the same time, this spiral guiding effect also helps to reduce the possibility of particles directly impacting the inner wall, reducing wall adhesion, and helps to reintroduce the small amount of material already deposited on the wall into the airflow for drying.

[0029] According to one embodiment of the present invention, the spiral baffle 11 has a spiral angle of 10° to 45° and a diameter of 10% to 20% of the diameter of the drying chamber 1. The spiral angle and diameter optimize material distribution, enhance drying uniformity and equipment adaptability.

[0030] According to one embodiment of this utility model, a high-pressure water cleaning system is also installed on the top of the drying chamber 1 to facilitate cleaning and maintenance of the equipment. This system includes multiple nozzles that are circumferentially and evenly distributed within the drying chamber 1 and connected to a high-pressure water tank. After production is completed, the system can be activated to thoroughly clean the inner walls of the drying chamber 1 using high-pressure water flow, effectively removing residual materials, maintaining the cleanliness of the drying chamber 1, preventing cross-contamination of materials, and reducing the labor intensity and time cost of manual cleaning.

[0031] According to one embodiment of this utility model, the hot air duct connector 2 is a key component for introducing the hot air required for drying. In this embodiment, the hot air duct connector 2 and the atomizer are coaxially arranged, meaning that the hot air flow and the atomized droplets enter the drying chamber 1 from the same direction. This coaxial design helps to achieve initial uniform mixing of the hot air and droplets, laying the foundation for subsequent thorough drying. More importantly, at least one guide plate 21 is innovatively provided at the connection between the hot air duct connector 2 and the inlet of the drying chamber 1. These guide plates 21 can be flat or arc-shaped structures, with an installation angle of 30° to 60° relative to the axis of the hot air duct connector 2. The function of the guide plate 21 is to change the flow direction of the hot air, so that it no longer enters the drying chamber 1 in a single straight line, but forms a certain turbulence. This turbulence can significantly increase the contact area and mixing efficiency between the hot air and the atomized droplets, allowing each droplet to exchange heat more fully with the hot air, thereby improving the uniformity of drying, avoiding local over-drying or under-drying, and ultimately improving the overall quality of the product.

[0032] According to one embodiment of this utility model, 3 to 9 baffles 21 can be arranged in a circumferential array on the inner wall of the hot air duct connector 2, and the width of the baffles 21 is designed to be 20% to 50% of the diameter of the hot air duct connector 2. This size ratio can generate effective turbulence while minimizing airflow resistance and reducing energy loss. To further reduce material adhesion on the surface of the baffles 21 and extend the service life of the baffles 21, the surface of the baffles 21 can also be coated with a polytetrafluoroethylene coating, which has excellent non-stick properties and high temperature resistance.

[0033] According to one embodiment of this invention, the atomizer disperses the liquid AMPS copolymer solution into fine droplets to increase its contact area with hot air, thereby accelerating moisture evaporation. In this embodiment, a suitable atomizer type, such as an ultrasonic atomizer or an electrostatic atomizer, can be selected according to specific process requirements and material characteristics. Ultrasonic atomizers utilize high-frequency sound waves to break the liquid into a fine mist, producing droplets with uniform particle size, achieving a more refined atomization effect. Electrostatic atomizers use a high-voltage electrostatic field to charge the liquid, dispersing it into fine droplets under the influence of the electric field. This atomization method can further improve the uniformity and dispersion of atomization and may reduce droplet aggregation. Selecting a suitable atomizer type helps improve the drying effect of the droplets, resulting in powder products with a more uniform particle size distribution.

[0034] According to one embodiment of this utility model, the main function of the powder collection system is to separate the dried powder from the airflow to obtain the final product. To improve the collection efficiency of fine powder and reduce material loss and environmental pollution, the powder collection system in this embodiment employs a combination of a multi-stage cyclone separator and a bag filter. The bottom outlet of the drying chamber 1 is connected to the inlet of the multi-stage cyclone separator. The cyclone separator utilizes the centrifugal force generated by the rotational motion of the airflow to separate and collect larger powder particles from the airflow. Using a multi-stage cyclone separator allows for the graded collection of powders of different particle sizes, further improving the overall collection efficiency. The outlet of the cyclone separator is connected to the inlet of the bag filter. The bag filter is a high-efficiency dust removal device that uses fiber filter bags to filter fine powder particles in the airflow. Through secondary filtration by the bag filter, fine powder that the cyclone separator fails to completely separate can be effectively captured, significantly improving the powder collection rate, reducing dust emissions, and meeting increasingly stringent environmental protection requirements. The collected powder can be periodically discharged from the cyclone separator and bag filter for subsequent packaging and storage. This is a common setting in this field and will not be elaborated further here.

[0035] According to one embodiment of this invention, a liquid AMPS copolymer solution is fed into an atomizer via a feeding system. The atomizer disperses the solution into tiny droplets, which are then sprayed into the drying chamber 1 through the atomizer pipe 4. Simultaneously, heated air first passes through the hot air pipe body 3 and then enters the drying chamber 1 through the hot air pipe connector 2 connected to the hot air pipe body 3. Since the hot air pipe connector 2 and the atomizer are coaxially aligned, the hot air flow and the atomized droplets are initially mixed upon entering the drying chamber 1. A guide plate 21 located at the connection point of the hot air pipe connector 2 alters the flow direction of the hot air, creating strong turbulence. This turbulence intensifies the relative motion between the hot air and the droplets, significantly increasing the contact area and heat transfer efficiency, thereby accelerating the evaporation of moisture from the droplets. After sufficient heat exchange and moisture evaporation with the hot air within the drying chamber 1, the atomized droplets gradually transform into dry powder particles. Because drying chamber 1 adopts a conical bottom design and has spiral baffles 11 installed on its inner wall, the powder particles move downwards along a spiral path under the guidance of gravity and airflow, eventually reaching the bottom outlet of drying chamber 1. The conical structure and spiral baffles 11 effectively reduce material accumulation on the inner wall, ensuring smooth material flow. The air mixture containing the dried powder is discharged from the bottom of drying chamber 1 and enters a multi-stage cyclone separator through the powder collection system pipe 5 connected to the bottom of drying chamber 1. In the cyclone separator, larger powder particles are separated and collected under centrifugal force. Subsequently, the airflow containing a small amount of fine powder enters the bag filter, where the fine powder particles are further captured by the filtration effect of the filter bags, and the purified gas is finally discharged into the atmosphere. After production, the inner wall of drying chamber 1 can be thoroughly cleaned by activating the high-pressure water cleaning system at the top of drying chamber 1 to remove residual material and ensure the cleanliness of the equipment.

[0036] According to one embodiment of this utility model, the drying equipment for the synthesis of AMPS copolymer water-reducing dispersant effectively solves the problems of uneven drying, severe material accumulation on the inner wall, and low powder collection efficiency in traditional spray dryers when processing high-viscosity polymer solutions. This is achieved through innovative designs such as a guide plate 21 at the hot air inlet, a conical drying chamber 1 structure with a spiral baffle 11, and a powder collection system combining a multi-stage cyclone separator and a bag filter. The equipment offers significant advantages such as improved drying efficiency, improved product quality, reduced material loss, and lower cleaning and maintenance costs, providing a more efficient and reliable drying solution for the industrial production of AMPS copolymer water-reducing dispersant.

[0037] 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. A drying apparatus suitable for the synthesis of AMPS copolymer water reducing dispersant characterized in that, include: The drying chamber includes a hot air duct connector, an atomizer, and a powder collection system. The drying chamber has an inlet and an outlet. The outlet of the atomizer and the hot air duct connector are connected to the inlet of the drying chamber, and the powder collection system is connected to the outlet of the drying chamber. The hot air duct connector is coaxially arranged with the atomizer. At least one guide plate is provided at the connection of the hot air duct connector. The guide plate is a flat plate or an arc structure. The installation angle is 30° to 60° relative to the axis of the hot air duct connector. The bottom of the drying chamber is connected to the powder collection system. The drying chamber has a conical structure with a cone angle of 15° to 30°.

2. The AMPS copolymer superplasticizer synthesis drying equipment suitable for claim 1, characterized in that, The number of deflectors is 1 to 3, and the width of the deflectors is 20% to 50% of the diameter of the hot air duct joint.

3. The AMPS copolymer water-reducing dispersant synthesis drying equipment suitable for use according to claim 1 or 2, characterized in that, The baffle plate is fixed to the inner wall of the hot air duct joint, and the surface of the baffle plate is coated with polytetrafluoroethylene.

4. The AMPS copolymer superplasticizer synthesis drying equipment suitable for claim 3, characterized in that, There are multiple deflectors arranged in a circular array on the inner wall of the hot air duct joint.

5. The AMPS copolymer superplasticizer synthesis drying plant suitable for use according to claim 1, characterized in that, The outlet of the drying chamber is located at the bottom.

6. The AMPS copolymer superplasticizer synthesis drying plant suitable for use according to claim 1, characterized in that, The inner wall of the drying chamber is equipped with spiral baffles along the axial direction.

7. The AMPS copolymer superplasticizer synthesis drying plant suitable for use according to claim 1, characterized in that, The atomizer is either an ultrasonic atomizer or an electrostatic atomizer.

8. The drying equipment for synthesizing and drying AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The powder collection system includes a multi-stage cyclone separator and a bag filter. The inlet of the cyclone separator is connected to the bottom of the drying chamber, and the outlet of the cyclone separator is connected to the bag filter.

9. The drying equipment for synthesizing and drying AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The top of the drying chamber is equipped with multiple nozzles, which are connected to a high-pressure water tank.

10. The drying equipment for synthesizing AMPS copolymer water-reducing dispersant according to claim 9, characterized in that, The number of nozzles is evenly distributed around the top of the drying chamber.

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