Wax microbead forming apparatus and forming process thereof

Abstract

This invention discloses a wax microsphere forming device and its forming process. The wax microsphere forming device includes a wax liquid storage device, a microsphere nozzle assembly, a microsphere tower, and a fluidization device. The microsphere nozzle assembly is located above and connected to the microsphere tower, and the fluidization device is located below and connected to the microsphere tower. The wax liquid storage device is connected to the microsphere nozzle assembly via a wax liquid pipeline. This invention, by employing a reliable microsphere nozzle assembly and fluidization device, and using a relatively small-sized microsphere tower, not only achieves the production of wax microspheres but also produces wax microspheres with a narrow particle size distribution, high production efficiency, low equipment investment, and a green and environmentally friendly process.

Description

Technical Field

[0001] This invention belongs to the field of wax microbead technology, specifically relating to a wax microbead forming device and its forming process. Background Technology

[0002] Coal-based oxidized wax is produced by introducing polar groups such as -OH, -COOH, -CHO, -COC-, and -COOR onto the nonpolar groups of coal-based Fischer-Tropsch wax. This alters its internal chain structure and surface properties, resulting in significant improvements in its solubility, emulsification, and lubrication properties. Currently, coal-based oxidized wax is mainly used in wax emulsions and PVC stabilizers, with the PVC sector accounting for 80% of the market demand. This application requires microbead-like coal-based oxidized wax products with a particle size of less than 20 mesh, and the narrower the particle size distribution, the better.

[0003] To achieve the aforementioned effects, there are currently very few technologies and equipment specifically designed for the molding process of coal-based oxidized wax microspheres. While the few existing technologies can produce oxidized wax microspheres and significantly increase output by being unaffected by material or external temperatures during granulation, they involve large equipment investments (requiring large diameter or height of the spray tower) and the resulting coal-based oxidized wax microspheres are not ideally formed, exhibiting large particle sizes and wide particle size distributions. Therefore, researching a novel wax microsphere molding equipment and process remains one of the main research topics for researchers. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a wax microbead molding equipment that solves the problems of large equipment scale, large investment and high energy consumption in the existing wax microbead molding technology.

[0005] The present invention also aims to provide a molding process using the above-mentioned wax microsphere molding equipment, which solves the problems of wide particle size distribution and low production efficiency of wax microspheres produced by the prior art.

[0006] To solve the above problems, the technical solution adopted by the present invention is: a wax microbead forming device, including a wax liquid storage device, a microbead nozzle assembly, a microbead tower, and a fluidization device; the microbead nozzle assembly is disposed above and connected to the microbead tower, the fluidization device is disposed below and connected to the microbead tower, and the wax liquid storage device is connected to the microbead nozzle assembly through a wax liquid pipeline.

[0007] Furthermore, the molding equipment also includes a filtration device, which is installed on the wax liquid pipeline connecting the wax liquid storage device and the microbead nozzle assembly.

[0008] Furthermore, there are at least two filter devices, and at least two filter devices are connected in parallel on the wax liquid pipeline.

[0009] Furthermore, the molding equipment also includes a pump, which is installed on the wax liquid pipeline.

[0010] Furthermore, the microbead nozzle assembly includes at least one microbead nozzle, the microbead nozzle includes a nozzle body, a heat-conducting oil jacket is provided on the outer wall of the nozzle body, and a filter screen is provided on the inner wall of the nozzle body.

[0011] Furthermore, the filter screen has a pore size of 100-120 mesh.

[0012] Furthermore, a through hole is provided at the bottom of the nozzle body, and the diameter of the through hole is 0.2 to 0.5 mm.

[0013] Furthermore, the fluidization device includes a fluidized bed body, which is provided with a gas distribution plate for uniform air passage and divides the fluidized bed body into an upper chamber for containing the wax microspheres and a lower chamber for air entry.

[0014] Furthermore, the gas velocity through the holes of the gas distribution plate is 5-18 m / s.

[0015] Furthermore, an air inlet pipe is provided on the side wall corresponding to the fluidized bed body and the lower chamber, and the air inlet pipe extends into the lower chamber.

[0016] Furthermore, the port of the air inlet pipe extending into the lower chamber faces the bottom of the fluidized bed body, and the entire air inlet pipe is L-shaped.

[0017] Furthermore, the apparent gas velocity of the fluidized bed body is 0.3–1.5 m / s.

[0018] Furthermore, the forming equipment also includes a screening and packaging device; an overflow port is provided on the side wall above the fluidized bed body corresponding to the upper chamber, and the overflow port is connected to the screening and packaging device.

[0019] Furthermore, the molding equipment also includes a multi-stage cyclone separation dust removal device, which is connected to the microbead tower.

[0020] Another technical solution of the present invention is implemented as follows: a molding process using the above-mentioned wax microbead molding equipment, the process specifically including the following steps:

[0021] S1. The wax liquid is transported from the wax liquid storage device to the microbead nozzle assembly through the wax liquid pipeline. The wax liquid entering the microbead nozzle assembly is then sprayed into the microbead tower through the microbead nozzle assembly to form the primary microbead product.

[0022] S2. The primary microsphere product enters the fluidization device through the microsphere tower. After the fluidization device fluidizes the primary microsphere product, wax microspheres are obtained.

[0023] Furthermore, in step 2, the apparent gas velocity during fluidization is 0.3–1.5 m / s, and the gas velocity through the orifice is 5–18 m / s.

[0024] Compared with the prior art, the molding equipment of the present invention, after adopting the above-mentioned scheme, not only realizes the production of wax microspheres by using a reliable microsphere nozzle assembly and fluidization device, and a smaller-sized microsphere tower, but also produces wax microspheres with a narrow particle size distribution, high production efficiency, low equipment investment, and a green and environmentally friendly process.

[0025] Furthermore, when the molding equipment and molding process of this invention are adopted, the molding process not only achieves heat exchange within the microsphere tower, and the purpose of configuring a fluidizing device at the bottom of the microsphere tower and further heat exchange for the wax microspheres within the fluidizing device, but also enables greater production capacity under the same specifications of microsphere tower. Under the same production capacity, the required tower height and tower diameter of the microsphere tower are greatly reduced, thus laying a solid foundation for saving equipment investment. At the same time, it avoids the problem of heat exchange only within the microsphere tower in the prior art. In addition, the microsphere nozzle structure involved in the molding equipment of this invention is simple, has low maintenance cost, and produces wax microsphere products with a narrow particle size distribution. Attached Figure Description

[0026] Figure 1 A process flow diagram of a wax microbead molding device provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the nozzle body in a wax microbead forming device provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the fluidization device in a wax microsphere forming equipment provided in an embodiment of the present invention.

[0029] In the figure, 1. Wax liquid storage device, 2. Microbead nozzle assembly, 21. Nozzle body, 22. Heat transfer oil jacket, 23. Filter screen, 24. Through hole, 3. Microbead tower, 4. Fluidization device, 41. Fluidized bed body, 42. Gas distribution plate, 43. Air inlet pipe, 44. Upper chamber, 45. Lower chamber, 5. Wax liquid pipeline, 6. Filter device, 7. Multi-stage cyclone separation dust removal device. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] In the description of this invention, it should be clarified that the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are merely for the convenience of describing this invention. They do not imply that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1

[0033] Embodiment 1 of the present invention provides a wax microbead molding device, referring to Figure 1 The device includes a wax storage device 1, a microbead nozzle assembly 2, a microbead tower 3, and a fluidization device 4. The microbead nozzle assembly 2 is located above and connected to the microbead tower 3, and the fluidization device 4 is located below and connected to the microbead tower 3. The wax storage device 1 is connected to the microbead nozzle assembly 2 through a wax pipeline 5.

[0034] By adopting the above scheme, and by using a reliable microbead nozzle assembly 2, a fluidization device 4, and a smaller-sized microbead tower 3, not only is the production of wax microbeads realized, but the produced wax microbeads also have a narrow particle size distribution, high production efficiency, low equipment investment, and a green and environmentally friendly process.

[0035] Furthermore, when the molding equipment and molding process of this invention are adopted, the molding process not only achieves the purpose of heat exchange in the microsphere tower 3, and the purpose of configuring the fluidization device 4 at the bottom of the microsphere tower 3 and further heat exchange of the wax microspheres in the fluidization device 4, but also enables greater production capacity under the same specifications of microsphere tower 3. Under the same production capacity, the required tower height and tower diameter of the microsphere tower 3 are greatly reduced, thus laying a solid foundation for saving equipment investment, and also avoiding the problem of heat exchange only in the microsphere tower 3 in the prior art.

[0036] In the specific implementation process of this embodiment, further reference is made to... Figure 1 The molding equipment also includes a filter device 6, which is installed on the wax pipeline 5 that connects the wax storage device 1 and the microbead nozzle assembly 2.

[0037] By installing a filter device 6 (preferably a filter) on the wax pipeline 5 that connects the wax storage device 1 and the microbead nozzle assembly 2, not only is the purpose of filtering the wax liquid achieved, but it also lays the foundation for producing high-quality wax microbeads and avoids the problem of impurities affecting the quality of wax microbeads.

[0038] In the specific implementation process of this embodiment, refer to Figure 1 Furthermore, there are at least two filter devices 6, and at least two filter devices 6 are connected in parallel on the wax liquid pipeline 5.

[0039] By setting up two filtration devices 6 (preferably filters), the wax liquid is filtered more cleanly, thereby laying a foundation for the production of high-quality wax microbeads.

[0040] In this embodiment, the molding equipment further includes a pump (not shown in the figure), which is installed on the wax liquid pipeline 5.

[0041] By installing a pump on the wax liquid pipeline 5, the wax liquid can be quickly introduced into the microbead nozzle assembly 2, thereby effectively improving the production efficiency of wax microspheres.

[0042] In the specific implementation process of this embodiment, further reference is made to... Figure 2 The microbead nozzle assembly 2 includes at least one microbead nozzle, the microbead nozzle includes a nozzle body 21, a heat-conducting oil jacket 22 is provided on the outer wall of the nozzle body 21, and a filter screen 23 is provided on the inner wall of the nozzle body 21.

[0043] By setting up multiple microbead nozzles, the production efficiency of wax microspheres was effectively improved.

[0044] In the specific implementation process of this embodiment, further reference is made to... Figure 2 The filter screen 23 has a pore size of 100-120 mesh.

[0045] Setting the pore size of filter screen 23 to 100-120 mesh facilitates the production of wax microspheres with qualified particle size.

[0046] In the specific implementation process of this embodiment, further reference is made to... Figure 2 The nozzle body 21 is also provided with a through hole 24 at the bottom, and the diameter of the through hole 24 is 0.2 to 0.5 mm.

[0047] By setting the aperture of the through hole 24 to 0.2-0.5 mm, it is not only convenient for the wax microspheres to enter the microsphere tower 3 from the bottom of the nozzle body 21, but also beneficial for producing wax microspheres with qualified particle size during production.

[0048] In the specific implementation process of this embodiment, further reference is made to... Figure 3 The fluidization device 4 includes a fluidized bed body 41, and a gas distribution plate 42 is provided inside the fluidized bed body 41 to allow air to pass through evenly and to divide the fluidized bed body 41 into an upper chamber 44 for containing the wax microspheres and a lower chamber 45 for allowing air to enter; the gas velocity through the holes of the gas distribution plate 42 is 5-18 m / s.

[0049] By using a gas distribution plate 42 to divide the fluidized bed body 41 into an upper chamber 44 for containing the wax microspheres and a lower chamber 45 for allowing air to enter, and setting the gas velocity through the gas distribution plate 42 to 5-18 m / s, the wax microspheres can be well fluidized and separated after entering the upper chamber 44 of the fluidized bed body 41, thereby effectively improving the quality of the wax microspheres.

[0050] In the specific implementation process of this embodiment, further reference is made to... Figure 3 An air inlet pipe 43 is provided on the side wall corresponding to the fluidized bed body 41 and the lower chamber 45, and the air inlet pipe 43 extends into the lower chamber 45.

[0051] In the specific implementation process of this embodiment, further reference is made to... Figure 3 The inlet pipe 43 extends into the lower chamber with its port facing the bottom of the fluidized bed body 41, and the entire inlet pipe 43 is L-shaped; the apparent gas velocity of the fluidized bed body 41 is 0.3 to 1.5 m / s.

[0052] By setting the air inlet pipe 43 to an L-shape with its port facing the bottom of the fluidized bed body 41, it is beneficial for air to first fill the entire lower chamber 45 and then enter the upper chamber 44 evenly through the gas separation plate 42, thereby effectively improving the fluidization and separation effect of the wax microspheres in the upper chamber 44.

[0053] In the specific implementation process of this embodiment, further reference is made to... Figure 3 The forming equipment also includes a screening and packaging device 7; an overflow port 46 is provided on the side wall above the fluidized bed body 41 corresponding to the upper chamber 44, and the overflow port 46 is connected to the screening and packaging device 7.

[0054] An overflow port 46 is provided on the side wall corresponding to the upper chamber 44 above the fluidized bed body 41, facilitating the flow of the fluidized and separated wax microspheres into the screening and packaging device 7 through the overflow port 46. In a specific implementation of this embodiment, the molding equipment further includes a multi-stage cyclone separation and dust removal device 8, which is connected to the microsphere tower 3.

[0055] By setting up a multi-stage cyclone separation dust removal device 8, as referenced Figure 1Furthermore, the multi-stage cyclone separation dust removal device 8 is connected to the microbead tower 3, effectively achieving the goal of energy conservation and environmental protection.

[0056] The working principle of the wax microbead forming device provided in Embodiment 1 of the present invention is as follows (taking coal-based oxidized wax microbeads as an example):

[0057] Reference Figure 1-3 Coal-based oxidized wax liquid is transported from wax liquid storage device 1 to microbead nozzle group 2 (multiple microbead nozzles) through wax liquid pipeline 5 under the action of pump (not shown in the figure). A filter device 6 is installed on the coal-based oxidized wax liquid pipeline 5. After being distributed by multiple microbead nozzles, the wax liquid is sprayed down from the top of the microbead tower 3. The primary microbead product collected at the bottom of the tower enters the fluidized body 41. The microbead product flowing out of the overflow port of the fluidized body 41 enters the screening and packaging device 7. The gas at the top of the microbeads and some of the entrained dust enter the multi-stage cyclone separation dust removal device 8.

[0058] In the above process, air is blown in from the conical bottom of the microsphere tower 3 by a fan, and the air is distributed through the gas distributor (not shown in the figure) at the bottom cone; air is blown in from the bottom air inlet pipe 43 of the fluidized bed body 41 by a fan, and the air is distributed through the gas distribution plate 42 in the fluidized bed body 41.

[0059] Figure 1 The wax pump, fan, flow meter, and valves are not shown in the diagram. The number of wax pipeline 5, heat transfer oil jacket 22, and microbead nozzles in microbead nozzle assembly 2 can be determined according to actual conditions. The microbead nozzles are evenly distributed across the cross-section at the top of the tower. For the structure of the microbead nozzles, please refer to [reference needed]. Figure 2 As shown, the nozzle body 21 is made of 304 stainless steel. The outer wall of the nozzle body 21 is provided with a heat-conducting oil jacket 22, and the inner wall is provided with a filter screen 23. The filter screen 23 has a mesh size of 100-120 mesh to ensure that the oxidized wax liquid does not solidify and impurities do not clog the nozzle body 21. The bottom hole diameter of the nozzle body 21 is 0.2-0.5mm.

[0060] Example 2

[0061] This embodiment 2 provides a molding process using the wax microbead molding equipment described in embodiment 1, which specifically includes the following steps:

[0062] S1. The wax liquid is transported from the wax liquid storage device 1 to the microbead nozzle group 2 through the wax liquid pipeline 5. The wax liquid entering the microbead nozzle group 2 is then sprayed into the microbead tower 3 through the microbead nozzle group 2 to form a primary microbead product.

[0063] S2. The primary microbead product enters the fluidization device 4 through the microbead tower 3. After the fluidization device 4 fluidizes the primary microbead product, wax microbeads are obtained.

[0064] Furthermore, in step 2, the apparent gas velocity during fluidization is 0.3–1.5 m / s, and the gas velocity through the orifice is 5–18 m / s.

[0065] In summary, the molding equipment of this invention, by employing a reliable nozzle and fluidized bed and a smaller-sized spray tower, not only achieves the production of wax microspheres, but also produces wax microspheres with a narrow particle size distribution, high production efficiency, low equipment investment, and a green and environmentally friendly process.

[0066] Furthermore, when the molding equipment and molding process of the present invention are adopted, the molding process not only achieves the purpose of heat exchange in the tower, configuring the fluidized bed body 41 at the bottom of the tower, and further heat exchange of wax microspheres in the fluidized bed body 41, but also enables greater production capacity under the same specifications of microsphere tower 3. Under the same production capacity, the required tower height and tower diameter of microsphere tower 3 are greatly reduced, laying a solid foundation for saving equipment investment, and thus avoiding the problem of heat exchange only in the microsphere tower 3 in the prior art;

[0067] In addition, 1) the microsphere nozzle structure involved in the molding equipment of the present invention is simple, has low maintenance cost, and the particle size distribution of the wax microsphere product is narrow; 2) in the molding process of the present invention, due to the use of fluidized bed body 41, the fluidized bed body 41 further disperses and cools the wax microsphere product at the bottom of the microsphere tower 3, which greatly improves the throughput and has little wear on the wax microsphere product; 3) the molding process provided by the present invention is not only applicable to coal-based oxidized wax with high viscosity and penetration, but also applicable to Fischer-Tropsch wax, paraffin wax, etc.; 4) the molding method of the present invention is simple, environmentally friendly, and low in cost.

[0068] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wax microbead forming device, characterized in that, The system includes a wax storage device (1), a microbead nozzle assembly (2), a microbead tower (3), and a fluidization device (4); the microbead nozzle assembly (2) is located above and connected to the microbead tower (3), and the fluidization device (4) is located below and connected to the microbead tower (3); the wax storage device (1) is connected to the microbead nozzle assembly (2) through a wax pipeline (5); the microbead nozzle assembly (2) includes at least one microbead nozzle, and the microbead nozzle includes a nozzle body. (21) A heat-conducting oil jacket (22) is provided on the outer wall of the nozzle body (21), and a filter screen (23) is provided on the inner wall of the nozzle body (21); the fluidization device (4) includes a fluidized bed body (41), and a gas distribution plate (42) for uniform air passage is provided in the fluidized bed body (41) and the fluidized bed body (41) is divided into an upper chamber (44) for containing the wax microbeads and a lower chamber (45) for air to enter.

2. The wax microbead forming equipment according to claim 1, characterized in that, The molding equipment also includes a filter device (6), which is installed on the wax pipeline (5) that connects the wax storage device (1) and the microbead nozzle assembly (2).

3. The wax microbead forming equipment according to claim 2, characterized in that, There are at least two filter devices (6), and at least two filter devices (6) are connected in parallel on the wax liquid pipeline (5).

4. The wax microbead forming equipment according to claim 1, characterized in that, The molding equipment also includes a pump, which is installed on the wax liquid pipeline (5).

5. A wax microbead forming device according to any one of claims 1-4, characterized in that, The filter screen (23) has a pore size of 100-120 mesh.

6. The wax microbead forming equipment according to claim 5, characterized in that, The nozzle body (21) is also provided with a through hole (24) at the bottom, and the diameter of the through hole (24) is 0.2 to 0.5 mm.

7. A wax microbead forming device according to any one of claims 1-4, characterized in that, The gas velocity through the holes of the gas distribution plate (42) is 5-18 m / s.

8. The wax microbead forming equipment according to claim 7, characterized in that, An air inlet pipe (43) is provided on the side wall corresponding to the fluidized bed body (41) and the lower chamber (45), and the air inlet pipe (43) extends into the lower chamber (45).

9. The wax microbead forming equipment according to claim 8, characterized in that, The air inlet pipe (43) extends into the lower chamber (45) with its port facing the bottom of the fluidized bed body (41), and the entire air inlet pipe (43) is L-shaped.

10. The wax microbead forming equipment according to claim 9, characterized in that, The apparent gas velocity of the fluidized bed body (41) is 0.3 to 1.5 m / s.

11. The wax microbead forming equipment according to claim 10, characterized in that, The forming equipment also includes a screening and packaging device (7); an overflow port (46) is provided on the side wall above the fluidized bed body (41) corresponding to the upper chamber (44), and the overflow port (46) is connected to the screening and packaging device (7).

12. A wax microbead forming device according to any one of claims 1-4, characterized in that, The molding equipment also includes a multi-stage cyclone separation dust removal device (8), which is connected to the microbead tower (3).

13. A molding process using the wax microsphere molding equipment according to any one of claims 1-12, characterized in that, The process specifically includes the following steps: S1. The wax liquid is transported from the wax liquid storage device (1) to the microbead nozzle group (2) through the wax liquid pipeline (5). The wax liquid entering the microbead nozzle group (2) is then sprayed into the microbead tower (3) through the microbead nozzle group (2) to form a primary microbead product. S2. The primary microbead product enters the fluidization device (4) through the microbead tower (3). The fluidization device (4) performs fluidization treatment on the primary microbead product to obtain wax microbeads.

14. The molding process of the wax microsphere molding equipment according to claim 13, characterized in that, In step 2, the apparent gas velocity during fluidization is 0.3–1.5 m / s, and the gas velocity through the orifice is 5–18 m / s.

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