Heavy calcium carbonate modification spray drying device

Abstract

The utility model discloses a heavy calcium carbonate modification spray drying device, and relates to the technical field of modified heavy calcium carbonate processing, the heavy calcium carbonate modification spray drying device comprises a treatment tower, one side of the treatment tower is provided with a modification assembly, and the lower end of the treatment tower is provided with a collection assembly; the interior of the treatment tower is fixedly connected with a flow guide bulge, the interior of the treatment tower is divided into a modification section and a drying section by the flow guide bulge, the modification assembly comprises a coaxial three-fluid atomizer, and the lower end of the coaxial three-fluid atomizer is arranged in the modification section in the treatment tower in a penetrating manner. According to the utility model, the coaxial three-fluid atomizer is arranged, so that the mixing degree of a material and a modifier can be improved in the modification section, and meanwhile, the temperature of the modification section and the drying section is controlled through the hot air distributor, so that the modification wrapping rate is effectively ensured, and the damage to the material caused by over-high temperature is prevented.

Description

Technical Field

[0001] This utility model relates to the field of modified heavy calcium carbonate processing technology, specifically a heavy calcium carbonate modified spray drying device. Background Technology

[0002] Heavy calcium carbonate is an important and widely used chemical raw material. It has the advantages of being readily available, inexpensive, and non-toxic, and is widely used in industries such as papermaking, coatings, and plastics. In order to improve the utilization of heavy calcium carbonate in industry, it is necessary to modify the surface of heavy calcium carbonate with efficient surface modifiers and methods.

[0003] However, the traditional process uses a segmented "modification-drying" process, which results in serious energy waste. Currently, it relies too much on mechanochemical action, and the modifier (titanium ester / silane) is difficult to form a monolayer on the particle surface. In addition, there is no zoned drying temperature, which leads to excessive heat loss on the one hand, and the excessively high temperature in the modification stage can also cause damage to the material on the other hand.

[0004] Based on this, a spray drying apparatus for modifying heavy calcium carbonate is provided, which can eliminate the drawbacks of existing apparatus. Utility Model Content

[0005] The purpose of this invention is to provide a spray drying device for modifying heavy calcium carbonate, so as to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heavy calcium carbonate modified spray drying device includes a processing tower, a modification component is provided on one side of the processing tower, and a collection component is provided at the lower end of the processing tower.

[0008] The processing tower is fixedly connected to a flow guide protrusion, which divides the interior of the processing tower into a modification section and a drying section. The modification component includes a coaxial three-fluid atomizer, the lower end of which is installed through the modification section inside the processing tower. The input end of the coaxial three-fluid atomizer is fixedly connected to a second air supply pipe, a slurry pipe, and a modifier inlet pipe. The modification component also includes an air supply component.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the air supply assembly includes a hot air distributor, which has two output ends and is fixedly connected to a first air supply pipe and a second air supply pipe respectively. The other end of the first air supply pipe is fixedly connected to an air supply chamber, which is located outside the treatment tower. Several air supply nozzles are fixedly connected to the inner side of the air supply chamber.

[0011] In one alternative: all the air supply nozzles are installed through the drying section inside the treatment tower.

[0012] In one alternative: the collecting assembly includes a collecting base plate, a plurality of springs are fixedly connected to the lower surface of the collecting base plate, the collecting base plate is elastically supported at the lower end of the processing tower by the springs, a collecting frame is provided at the middle of the upper part of the collecting base plate, and a limiting groove is formed on the upper surface of the collecting base plate.

[0013] In one alternative: the lower end of the processing tower is slidably disposed inside the limiting groove, and a sealing ring is provided inside the limiting groove.

[0014] In one alternative: a fixing component is provided below the processing tower.

[0015] In one alternative: the fixing assembly includes a mounting base plate, the upper surface of which is fixedly connected to the lower end of each adjacent spring, a base plate is fixedly connected to the upper surface of the mounting base plate, and a plurality of fixing rods are fixedly connected around the upper surface of the base plate, the upper end of each fixing rod being fixedly connected to the outside of the processing tower, and the base plate being positioned to limit the material receiving base plate.

[0016] In one alternative: a controller is fixedly connected to one side of the hot air distributor, and the controller is electrically connected to the modified component and the air supply component respectively.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention, through the design of a coaxial three-fluid atomizer, can improve the mixing degree of materials and modifiers in the modification section. At the same time, the temperature of the modification and drying sections is controlled by a hot air distributor, which effectively ensures the modification coating rate while preventing damage to the materials due to excessive temperature, thereby further improving the modification efficiency. Meanwhile, precise temperature control also reduces energy consumption, thereby reducing production costs and improving the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the processing tower of this utility model.

[0021] Figure 3 This is a schematic diagram of the modified component structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the collection component structure of this utility model.

[0023] Figure reference numerals: 1. Processing tower; 2. Mounting base plate; 3. Base; 4. Hot air distributor; 5. First air supply pipe; 6. Second air supply pipe; 7. Coaxial three-fluid atomizer; 8. Slurry pipe; 9. Modifier inlet pipe; 10. Guide protrusion; 11. Air supply chamber; 12. Air supply nozzle; 13. Controller; 14. Fixing rod; 15. Material receiving base plate; 16. Spring; 17. Material receiving frame; 18. Limiting groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] In one embodiment, such as Figures 1-4 As shown, a heavy calcium carbonate modified spray drying device includes a processing tower 1, a modification component is provided on one side of the processing tower 1, and a collection component is provided at the lower end of the processing tower 1.

[0026] The processing tower 1 is fixedly connected to a flow guide protrusion 10, which divides the interior of the processing tower 1 into a modification section and a drying section. The inclination angle of one side of the flow guide protrusion 10 is 30-45°. The modification component includes a coaxial three-fluid atomizer 7. The lower end of the coaxial three-fluid atomizer 7 is installed through the modification section inside the processing tower 1. The input end of the coaxial three-fluid atomizer 7 is fixedly connected to a second air supply pipe 6, a slurry pipe 8, and a modifier inlet pipe 9. The modification component also includes an air supply component.

[0027] In this embodiment, during use, the slurry tank is connected via the slurry pipe 8, and the modifier storage tank is connected via the modifier inlet pipe 9. At this time, air is introduced into the coaxial three-fluid atomizer 7 through the second air supply pipe 6, and the slurry and modifier are introduced into the coaxial three-fluid atomizer 7 together. The solid content of the slurry fed into the center pipe of the coaxial three-fluid atomizer 7 is 60-65%, the middle layer is vented with air at 0.6-0.8 MPa, and the outer layer is sprayed with modifier. Then, it is sprayed out from the output end of the coaxial three-fluid atomizer 7 to improve the encapsulation rate of the modifier.

[0028] In one embodiment, such as Figure 3As shown, the air supply assembly includes a hot air distributor 4, which has two output ends and is fixedly connected to a first air supply pipe 5 and a second air supply pipe 6, respectively. The other end of the first air supply pipe 5 is fixedly connected to an air supply chamber 11, which is located outside the processing tower 1. Several air supply nozzles 12 are fixedly connected to the inside of the air supply chamber 11. At this time, the first air supply pipe 5 transmits relatively high-temperature air, wherein the air temperature of the second air supply pipe 6 in the modification section is 80-100℃, and the air temperature of the first air supply pipe 5 in the drying section is 160-180℃. The drying efficiency is improved by using the first air supply pipe 5, and the air in the first air supply pipe 5 is injected into the interior of the air supply chamber 11, and then injected into the drying section through the air supply nozzles 12 to start drying.

[0029] In one embodiment, such as Figure 3 As shown, the output ends of all the air supply nozzles 12 are installed through the drying section inside the treatment tower 1 to facilitate the input of high-temperature air.

[0030] In one embodiment, such as Figure 4 As shown, the collection assembly includes a receiving base plate 15. Several springs 16 are fixedly connected to the lower surface of the receiving base plate 15. The receiving base plate 15 is elastically supported at the lower end of the processing tower 1 by the springs 16. A receiving frame 17 is provided at the middle of the upper end of the receiving base plate 15. A limiting groove 18 is opened on the upper surface of the receiving base plate 15. The material will fall into the inside of the receiving frame 17. After drying is completed, the receiving base plate 15 can be pulled down to remove the receiving frame 17. Then, the receiving base plate 15 is released, and the rebound of the springs 16 sends the receiving base plate 15 to the lower end of the processing tower 1. The limiting groove 18 forms a seal with the lower end of the processing tower 1, waiting for the next collection.

[0031] In one embodiment, such as Figure 4 As shown, the lower end of the processing tower 1 is slidably disposed inside the limiting groove 18, and a sealing ring is provided inside the limiting groove 18 to improve the sealing effect.

[0032] In one embodiment, such as Figure 1 As shown, a fixing component is provided below the processing tower 1 to fix the processing tower 1.

[0033] In one embodiment, such as Figure 1 As shown, the fixing assembly includes a mounting base plate 2. The upper surface of the mounting base plate 2 is fixedly connected to the lower end of each adjacent spring 16. A base 3 is fixedly connected to the upper surface of the mounting base plate 2. Several fixing rods 14 are fixedly connected around the upper surface of the base 3. The upper end of each fixing rod 14 is fixedly connected to the outside of the processing tower 1. The base 3 is positioned on the outside of the receiving base plate 15 to limit the sliding of the receiving base plate 15. At the same time, the fixing rods 14 fix the entire processing tower 1.

[0034] In one embodiment, such as Figure 3 As shown, a controller 13 is fixedly connected to one side of the hot air distributor 4. The controller 13 is electrically connected to the modification component and the air supply component respectively, and controls the entire equipment through the hot air distributor 4.

[0035] The above embodiment discloses a heavy calcium carbonate modified spray drying device. In use, a slurry tank is connected via a slurry pipe 8, and a modifier storage tank is connected via a modifier inlet pipe 9. Air is introduced into a coaxial three-fluid atomizer 7 via a second air supply pipe 6, simultaneously introducing both the slurry and the modifier into the coaxial three-fluid atomizer 7. The slurry solids content in the central tube of the coaxial three-fluid atomizer 7 is 60-65%, air is introduced into the middle layer at 0.6-0.8 MPa, and the modifier is sprayed onto the outer layer, subsequently exiting from the output end of the coaxial three-fluid atomizer 7 to improve the modifier encapsulation rate. The material residence time is further extended by the guide protrusions 10, while the first air supply pipe 5 transmits relatively high-temperature air. The air temperature in the second air supply pipe 6 of the modification section is 80-100℃, and the air temperature in the first air supply pipe 5 of the drying section is 160-180℃. The first air supply pipe 5 is used to improve the drying efficiency. The air in the first air supply pipe 5 is injected into the air supply chamber 11, and then injected into the drying section through the air supply nozzle 12 to start drying. After drying, the air will fall into the receiving frame 17. After drying is completed, the receiving base plate 15 can be pulled down to remove the receiving frame 17. Then, the receiving base plate 15 is released, and the spring 16 rebounds to send the receiving base plate 15 to the lower end of the processing tower 1. It forms a seal with the lower end of the processing tower 1 through the limiting groove 18, waiting for the next collection.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heavy calcium carbonate modified spray drying device, comprising a processing tower (1), wherein a modification component is provided on one side of the processing tower (1), and a collection component is provided at the lower end of the processing tower (1); Its features are, The processing tower (1) is fixedly connected to a flow guide protrusion (10), which divides the interior of the processing tower (1) into a modification section and a drying section. The modification component includes a coaxial three-fluid atomizer (7), the lower end of which is installed through the modification section inside the processing tower (1). The input end of the coaxial three-fluid atomizer (7) is fixedly connected to a second air supply pipe (6), a slurry pipe (8), and a modifier inlet pipe (9). The modification component also includes an air supply component.

2. The spray drying apparatus for modifying heavy calcium carbonate according to claim 1, characterized in that, The air supply assembly includes a hot air distributor (4), which has two output ends and is fixedly connected to a first air supply pipe (5) and a second air supply pipe (6) respectively. The other end of the first air supply pipe (5) is fixedly connected to an air supply chamber (11), which is located outside the processing tower (1). Several air supply nozzles (12) are fixedly connected to the inside of the air supply chamber (11).

3. The spray drying apparatus for modifying heavy calcium carbonate according to claim 2, characterized in that, All of the air supply nozzles (12) have their output ends installed inside the drying section of the treatment tower (1).

4. The spray drying apparatus for modifying heavy calcium carbonate according to claim 1, characterized in that, The collection assembly includes a receiving base plate (15), and several springs (16) are fixedly connected to the lower surface of the receiving base plate (15). The receiving base plate (15) is elastically supported at the lower end of the processing tower (1) by the springs (16). A receiving frame (17) is provided in the middle of the upper end of the receiving base plate (15), and a limiting groove (18) is opened on the upper surface of the receiving base plate (15).

5. The spray drying apparatus for modifying heavy calcium carbonate according to claim 4, characterized in that, The lower end of the processing tower (1) is slidably disposed inside the limiting groove (18), and a sealing ring is provided inside the limiting groove (18).

6. The spray drying apparatus for modifying heavy calcium carbonate according to claim 1, characterized in that, A fixing component is provided below the processing tower (1).

7. The spray drying apparatus for modifying heavy calcium carbonate according to claim 6, characterized in that, The fixing assembly includes a mounting base plate (2), the upper surface of which is fixedly connected to the lower end of each adjacent spring (16), a base (3) is fixedly connected to the upper surface of the mounting base plate (2), and a number of fixing rods (14) are fixedly connected around the upper surface of the base (3). The upper end of each fixing rod (14) is fixedly connected to the outside of the processing tower (1), and the base (3) is limited to the outside of the receiving base plate (15).

8. The spray drying apparatus for modifying heavy calcium carbonate according to claim 2, characterized in that, A controller (13) is fixedly connected to one side of the hot air distributor (4), and the controller (13) is electrically connected to the modification component and the air supply component respectively.

Images