Crosswind purging and cooling anti-wall-sticking device and centrifugal granulation equipment

Abstract

The invention provides a crosswind purging and cooling anti-wall-sticking device and centrifugal granulation equipment, and relates to the technical field of blast furnace slag waste heat recoverability, the crosswind purging and cooling anti-wall-sticking device comprises a frame and a crosswind ring assembly, an annular mounting window is arranged at the position, above a fluidized bed device, of the side wall of a granulation chamber, and the side wall of the granulation chamber is provided with an annular air inlet and an annular air outlet; the frame is arranged in the annular mounting window, the side air ring assembly is detachably arranged in the frame and is provided with an air inlet structure and an air outlet structure, the air inlet structure is used for being communicated with a cooling water mist device, and the air outlet structure faces the interior of the granulation chamber; the side air ring assembly is used for converting mixed water mist provided by the cooling water mist device into annular side wall air so as to purge and cool flying particles in the granulation chamber; granulated particles can be blown and cooled through annular side wall air generated by the side air ring assembly, so that the risk that the particles are broken and adhered to the wall is reduced, and normal operation of centrifugal granulation equipment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace slag waste heat recovery, and in particular to a side wind blowing cooling and anti-sticking wall device and a centrifugal granulation device. Background Art

[0002] In the related art, centrifugal granulation equipment is usually used to exchange heat between high-temperature molten materials produced in metal smelting, such as blast furnace steelmaking and ironmaking operations, and refrigerant air to generate hot air. The hot air can be provided to a hot blast furnace or other equipment as a heat source to achieve energy-saving and environmentally friendly waste heat recovery of high-temperature molten materials.

[0003] Specifically, the centrifugal granulation equipment may include a granulation chamber and a driving mechanism, a granulation rotor, a fluidized bed device, a silo and a discharge port arranged in the granulation chamber. The side wall of the granulation chamber is provided with a cold air inlet and a hot air outlet. The driving mechanism is connected to the granulation rotor drive and is used to drive the granulation rotor to rotate at a high speed, so that the high-temperature molten material in the granulation rotor is dispersed into molten liquid particles under the action of centrifugal force, gravity, friction, etc. The refrigerant air can enter the granulation chamber from the cold air inlet and generate hot air by heat exchange with the molten liquid particles rotating at a high speed in the granulation chamber. The hot air can be discharged from the hot air outlet to be transported to the downstream as a heat source for use. The granulated particles after heat exchange can fall on the fluidized bed device for cooling, and gradually flow downward into the silo, and finally be discharged from the discharge port.

[0004] Among them, the liquid particles are cooled and solidified during the high-speed flight in the granulation chamber. The liquid particles may be difficult to be completely solidified due to factors such as the flight time and the cooling intensity, thereby forming two-phase particles with a solidified surface and a liquid core. The two-phase particles hit the wall at the end of the flight (i.e., hit the side wall of the closed granulation chamber), causing the solid outer shell of the granulation chamber to rupture and the internal liquid particles to overflow and stick to the wall. The sticky particles will stick to and accumulate on the side wall of the granulation chamber to form a wall collision area. The continuous occurrence of the wall adhesion phenomenon not only significantly reduces the smoothness of the wall collision area of ​​the side wall of the granulation chamber, thereby further increasing the tendency of the particles to stick to the wall, but also the granulated particles are adhered to the side wall of the granulation chamber and cannot fall smoothly, making it impossible for the granulated particles to smoothly enter the next process (fluidized bed device) for further heat exchange and cooling, thereby causing the centrifugal granulation equipment to fail as a whole and cannot operate normally. Summary of the invention

[0005] The problem solved by the invention is how to effectively reduce the probability of granulated particles in a granulation chamber adhering to the wall, so as to ensure the normal operation of the centrifugal granulation equipment.

[0006] In order to solve the above problems, the present invention provides a side wind blowing cooling and anti-sticking wall device and a centrifugal granulation equipment.

[0007] In the first aspect, the present invention provides a side wind blowing, cooling and anti-sticking wall device, which is applied to centrifugal granulation equipment, wherein the centrifugal granulation equipment includes a granulation chamber and a fluidized bed device arranged in the granulation chamber, and the side wind blowing, cooling and anti-sticking wall device includes a frame and a side wind ring assembly, and an annular installation window is arranged on the side wall of the granulation chamber above the fluidized bed device, and the frame is arranged in the annular installation window, and the side wind ring assembly is detachably arranged in the frame, and the side wind ring assembly has an air intake structure and an air outlet structure, the air intake structure is used to connect to a cooling water mist device, and the air outlet structure faces the interior of the granulation chamber, and the side wind ring assembly is used to convert the mixed water mist provided by the cooling water mist device into annular side wall wind to blow and cool the flying particles in the granulation chamber.

[0008] Optionally, the side wind ring assembly includes multiple side wind modules, the frame is a cylindrical structure, and the multiple side wind modules are installed on the frame in a ring-shaped arrangement; the air intake structure includes multiple air intake interfaces, and the air outlet structure includes multiple air outlets, and each side wind module is provided with a corresponding air intake interface and a corresponding air outlet.

[0009] Optionally, the side wind module includes an air chamber, the air inlet interface and the air outlet, the air chamber is a shell structure with an air cavity inside, the air inlet interface, the air cavity and the air outlet are connected in sequence, the air inlet interface is arranged on the outside of the air chamber, and the extension direction of the air outlet is tangent to the inner wall of the granulation chamber.

[0010] Optionally, the frame includes a frame body and two retaining rings, and the two retaining rings are arranged at intervals along the axial direction of the frame body; the side wind module also includes two positioning plates, and the positioning plates are respectively arranged at both ends of the air chamber in the vertical direction, and each positioning plate is respectively fitted with the corresponding retaining ring.

[0011] Optionally, the frame body includes a support column, a preset interval is provided between the support column and the retaining ring, the side wind module further includes a fastener, a partial structure of the air chamber is located within the interval, and the fastener is used to detachably connect the support column and the air chamber.

[0012] Optionally, the air chamber includes an air chamber body and a pressure plate, the air chamber body is provided with the air outlet, one end of the air chamber body away from the air outlet is connected to the pressure plate, and the pressure plate is located in the interval; the fastener is passed through the support column and abuts against or separates from the pressure plate.

[0013] Optionally, along the circumference of the frame, two opposite ends of a side wind module are respectively connected to two adjacent side wind modules.

[0014] Optionally, the air outlet is arranged at the annular installation window and does not protrude from the inner wall of the granulation chamber.

[0015] In a second aspect, the present invention provides a centrifugal granulation device, comprising a granulation chamber, a fluidized bed device and the side wind blowing cooling and anti-sticking wall device as described above, and also comprising a cooling water mist device.

[0016] Optionally, the cooling water mist device includes a cold water main, a cold air main, a mixing structure, an air supply structure and a water supply structure. One end of the cold water main and the cold air main are connected to the water supply structure and the air supply structure respectively, and the other ends of the cold water main and the cold air main are connected to the mixing structure. The mixing structure is connected to the air intake structure of the side wind blowing cooling and anti-sticking wall device. The mixing structure is used to atomize the water output from the cold water main and mix it evenly with the cold air provided by the cold air main to form a mixed water mist, and transport it to the air intake structure of the side wind blowing cooling and anti-sticking wall device.

[0017] The beneficial effects of the side wind blowing cooling and anti-sticking wall device and the centrifugal granulation equipment of the present invention are:

[0018] The side wind blowing, cooling and anti-sticking wall device comprises a frame and a side wind ring assembly, wherein the side wind ring assembly can be detachably installed at the annular installation window of the granulating chamber through the frame, which can improve the convenience of disassembly and assembly of the side wind ring assembly and facilitate the maintenance of the side wind ring assembly.

[0019] The side wind ring assembly can be used to connect to the cooling water mist device. Specifically, the cooling water mist device is connected to the air inlet structure of the side wind ring assembly, and the air outlet structure of the side wind ring assembly can be oriented toward the inside of the granulation chamber, so that the mixed water mist provided by the cooling water mist device is converted into annular side wall wind blown into the inner wall side of the granulation chamber through the side wind ring assembly, so that the granulated particles approaching the radial direction of the granulation chamber are swept orthogonally (almost perpendicular to the flight direction of the particles) by the annular side wall wind. Under the sweeping disturbance of the annular side wall wind, the granulated particles will change the movement direction with the annular side wall wind, thereby increasing the flight time and greatly reducing the impact of the side wall of the granulation chamber. On the other hand, under the cooling effect of the mixed water mist at a relatively low temperature (or room temperature) in the annular side wall wind, the granulated particles can increase their flight time while also having a more complete heat exchange with the cold wind, thereby increasing the cooling depth of the granulated particles and further increasing the solid phase ratio, thereby effectively reducing the probability of wall sticking. Furthermore, since the side wind ring assembly is installed in the upper area of ​​the fluidized bed device in the granulation chamber through a frame, the granulated particles that have been efficiently cooled and have not been stuck to the wall can be smoothly transferred to the next process, such as the fluidized bed device, for further heat exchange and cooling, thereby effectively ensuring the normal operation of the centrifugal granulation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a centrifugal granulation device in an embodiment of the present invention;

[0021] Figure 2 This is one of the structural schematic diagrams of the side wind blowing cooling and anti-sticking wall device in an embodiment of the present invention;

[0022] Figure 3 This is a second structural schematic diagram of the side wind blowing cooling and anti-sticking wall device in an embodiment of the present invention;

[0023] Figure 4 This is one of the structural schematic diagrams of the side wind module in an embodiment of the present invention;

[0024] Figure 5 This is a second structural schematic diagram of the side wind module in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the framework in an embodiment of the present invention;

[0026] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 8 It is a schematic diagram of the partial structure of the side wind blowing cooling and anti-sticking wall device in an embodiment of the present invention;

[0028] Fig. 9 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0029] Fig.10 Schematic diagram of the pipeline structure connecting the cooling water mist device and the side wind module in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1-granulation chamber; 11-cold air inlet; 12-hot air outlet; 2-fluidized bed device; 21-fluidized bed; 22-wind cap; 3-flow guide tube; 4-granulation rotor; 5-transmission shaft; 6-driving motor; 7-two-phase particle flight belt; 8-bin; 9-rotating discharger; 10-buffer tank; 101-molten material; 100-side wind purge cooling and anti-sticking wall device; 110-frame; 111-frame body; 1110-support column; 1112-support ring; 112-retaining ring; 1120-interval; 120-side wind ring Components; 121-side wind module; 122-wind chamber; 1221-wind chamber body; 1222-pressure plate; 123-fasteners; 124-air intake structure; 1241-air intake interface; 125-air outlet structure; 1251-air outlet; 126-positioning plate; 200-cooling water mist device; 210-cold water main pipe; 220-cold air main pipe; 230-mixing structure; 240-first regulating valve; 250-second regulating valve; 260-water supply structure; 270-air supply structure; 280-collecting pipe; 290-branch pipe. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0033] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0035] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0036] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a side wind blowing cooling and anti-sticking wall device and a centrifugal granulation equipment.

[0037] like Figure 1 and Figure 2 As shown, a side wind blowing, cooling and anti-sticking wall device 100 provided in an embodiment of the present invention is applied to a centrifugal granulation device, wherein the centrifugal granulation device comprises a granulation chamber 1 and a fluidized bed device 2 arranged in the granulation chamber 1, the side wind blowing, cooling and anti-sticking wall device 100 comprises a frame 110 and a side wind ring assembly 120, an annular installation window is arranged on the side wall of the granulation chamber 1 above the fluidized bed device 2, the frame 110 is arranged in the annular installation window, the side wind ring assembly 120 is detachably arranged in the frame 110, the side wind ring assembly 120 has an air intake structure 124 and an air outlet structure 125, the air intake structure 124 is used to connect to the cooling water mist device 200, the air outlet structure 125 faces the interior of the granulation chamber 1, and the side wind ring assembly 120 is used to convert the mixed water mist provided by the cooling water mist device 200 into annular side wall wind to blow and cool the flying particles in the granulation chamber 1.

[0038] Specifically, the annular installation window can be arranged on the side wall of the granulating chamber 1 and above the fluidized bed device 2 , so the frame 110 and the side air ring assembly 120 arranged at the annular installation window are also above the fluidized bed device 2 .

[0039] The frame 110 provides a mounting base for the side wind ring assembly 120 . The side wind ring assembly 120 can be detachably mounted on the frame 110 and can be arranged in a ring shape.

[0040] In this embodiment, the side wind blowing cooling and anti-sticking wall device 100 includes a frame 110 and a side wind ring assembly 120, wherein the side wind ring assembly 120 can be detachably installed at the annular installation window of the granulation chamber 1 through the frame 110, which can improve the convenience of disassembly and assembly of the side wind ring assembly 120 and facilitate the maintenance of the side wind ring assembly 120.

[0041] The side wind ring assembly 120 can be used to connect to the cooling water mist device 200. Specifically, the cooling water mist device 200 is connected to the air inlet structure 124 of the side wind ring assembly 120, and the air outlet structure 125 of the side wind ring assembly 120 can be oriented toward the inner side of the granulating chamber 1, so as to convert the mixed water mist provided by the cooling water mist device 200 into annular side wall wind blown into the inner wall side of the granulating chamber 1 through the side wind ring assembly 120. The annular side wall wind refers to an annular airflow that flows close to the circumference of the granulating chamber 1, so as to perform orthogonal (almost perpendicular to the flight direction of the particles) sweeping of the granulated particles that fly radially from the granulating chamber 1 through the annular side wall wind. Under the sweeping disturbance of the annular side wall wind, the granulated particles will change the direction of movement along the annular side wall wind, that is, along the granulating chamber 1, the circumferential deflection movement of the inner wall of the granulating chamber 1 increases the flight time, greatly reduces the impact force of the granulating chamber 1 on the side wall, and effectively reduces the risk of breaking and sticking to the wall; on the other hand, under the cooling effect of the mixed water mist at a lower temperature (or room temperature) in the annular side wall wind, the granulated particles can have a more sufficient heat exchange with the cold wind while increasing the flight time, thereby increasing the cooling depth of the granulated particles and further improving the solid phase ratio, thereby effectively reducing the probability of sticking to the wall; further, since the side wind ring assembly 120 is installed in the upper area of ​​the fluidized bed device 2 in the granulating chamber 1 through the frame 110, the granulated particles that have been efficiently cooled and have not stuck to the wall can be smoothly transferred to the next process, such as the fluidized bed device 2, for further heat exchange and cooling, effectively ensuring the normal operation of the centrifugal granulation equipment.

[0042] The side wind ring assembly 120 may adopt the following structure, optionally, in combination with Figure 3 As shown, the side wind ring assembly 120 includes a plurality of side wind modules 121, the frame 110 is a cylindrical structure, and the plurality of side wind modules 121 are installed on the frame 110 in a ring-shaped arrangement; the air intake structure 124 includes a plurality of air intake interfaces 1241, and the air outlet structure 125 includes a plurality of air outlets 1251, and each of the side wind modules 121 is provided with a corresponding air intake interface 1241 and a corresponding air outlet 1251.

[0043] Specifically, the frame 110 can be a cylindrical structure, and multiple side wind modules 121 can be installed on the cylindrical structure in a circular arrangement; each side wind module 121 is provided with an air inlet interface 1241 and an air outlet 1251, and the multiple air inlet interfaces 1241 corresponding to the multiple side wind modules 121 can constitute the air inlet structure 124, and the multiple air outlets 1251 corresponding to the multiple side wind modules 121 can constitute the air outlet structure 125.

[0044] The mixed water mist provided by the cooling water mist device 200 can enter from the air inlet interface 1241 of each side wind module 121, and be discharged from the air outlet 1251 to be blown into the inner wall side of the granulation chamber 1, and the side wind module 121 can be used to blow the mixed water mist provided by the cooling water mist device 200 into a single side wind toward the inner wall side of the granulation chamber 1, and the single side winds blown out from the air outlet 1251 of the multiple side wind modules 121 arranged in a ring can form an annular side wall wind.

[0045] In this optional embodiment, since multiple side wind modules 121 are installed on the frame 110 in an annular interval 1120, and each side wind module 121 has an air inlet interface 1241 and an air outlet 1251, the single side winds blown out by the multiple side wind modules 121 to the inner wall side of the granulating chamber 1 can not only form annular side wall winds to achieve the flight disturbance of the particles hitting the wall, forcing the particles to move in a circular direction and reducing the impact force of the particles hitting the wall, but also efficiently cool the high-temperature particles; and, even if some side wind modules 121 have faults such as blockage, it will not affect the side wind operations generated by other side wind modules 121, thereby reducing the fault range of the side wind ring assembly 120.

[0046] Figure 5 Schematic diagram of a single side wind module from a top view in an embodiment of the present invention.

[0047] Optionally, a single side wind module 121 may adopt the following structure, combined with Figure 4 and Figure 5 As shown, the side wind module 121 includes an air chamber 122, an air inlet interface 1241 and an air outlet 1251, the air chamber 122 is a shell structure with an air cavity inside, the air inlet interface 1241, the air cavity and the air outlet 1251 are connected in sequence, the air inlet interface 1241 is arranged on the outside of the air chamber 122, and the extension direction of the air outlet 1251 is tangent to the inner wall of the granulation chamber 1.

[0048] Specifically, the wind chamber 122 can be a shell structure with an air cavity inside. An air inlet interface 1241 is set on a side wall of the wind chamber 122 away from the granulation chamber 1, and an air outlet 1251 is set at one end of the side wall of the wind chamber 122 facing the inside of the granulation chamber 1 along the circumference of the frame. The mixed water mist provided by the cooling water mist device 200 enters the wind chamber 122 through the air inlet interface 1241, and then is blown out from the air outlet 1251 along the tangential direction of the inner wall of the granulation chamber 1 to the inner side of the granulation chamber 1 to form a single side wind.

[0049] The air chamber 122 may be formed by welding a plurality of different plates.

[0050] In addition, a narrow slit extending vertically can be opened at one end of the side wall of the wind chamber 122 along the circumference of the frame to serve as the air outlet 1251. The extension direction of the air outlet 1251 can be tangent to the inner wall of the granulating chamber 1, so that the single side wind blown out from the air outlet 1251 is also tangent to the inner wall of the granulating chamber 1.

[0051] In this optional embodiment, since the air inlet interface 1241 is arranged on the outside of the wind chamber 122, it is helpful to quickly connect or disassemble the cooling water mist device 200 with the air inlet interface 1241, thereby facilitating subsequent maintenance operations; and the extension direction of the air outlet 1251 is tangent to the inner wall of the granulating chamber 1, so that the side wind blown into the interior of the granulating chamber 1 from the air outlet 1251 is not only close to the inner wall of the granulating chamber 1, which can increase the blowing range of the granulated particles in the granulating chamber 1, but also the annular side wall wind effectively formed by the multiple side winds blown out of the multiple wind chambers 122 arranged in a ring, which effectively blows the granulated particles flying radially along the granulating chamber 1 orthogonally (almost perpendicular to the flight direction of the particles), thereby increasing the flight time, greatly reducing the impact force hitting the side wall, and effectively reducing the risk of breakage and wall sticking.

[0052] Optionally, combined Figure 4 , Figure 6 and Figure 7 As shown, the frame 110 includes a frame body 111 and two retaining rings 112, and the two retaining rings 112 are arranged at intervals along the axial direction of the frame body 111; the side wind module 121 also includes two positioning plates 126, and the positioning plates 126 are respectively arranged at both ends of the air chamber 122 in the vertical direction, and each positioning plate 126 is respectively fitted with the corresponding retaining ring 112.

[0053] Specifically, the top and bottom ends of the air chamber 122 in the vertical direction are respectively connected to the corresponding positioning plates 126, and the two positioning plates 126 can be equivalent to the extensions of the top and bottom ends of the air chamber 122. The frame 110 can include a frame body 111 and two retaining rings 112, the frame body 111 can be basically cylindrical, each retaining ring 112 can be a closed-loop circular ring structure, or a non-closed-loop circular ring structure surrounded by multiple segments of arc structures, and the two retaining rings 112 can be distributed at intervals along the axial direction of the frame body 111.

[0054] The positioning plate 126 may be a curved plate structure.

[0055] A positioning plate 126 at the top of the air chamber 122 can fit with the outer wall of the upper retaining ring 112 on the frame body 111, and another positioning plate 126 at the bottom of the air chamber 122 can fit with the outer wall of the lower retaining ring 112 on the frame body 111.

[0056] In this optional embodiment, the side wind module 121 can be assembled with the frame 110 in the following manner, for example, by combining Figure 4 As shown, each side wind module 121 may include two positioning plates 126, and the two positioning plates 126 are respectively arranged at the ends of the wind chamber 122 in the vertical direction. Since the positioning plates 126 at the top and bottom ends of the wind chamber 122 are respectively fitted with the outer side walls of the retaining ring 112 arranged on the frame body 111, the upper and lower ends of the side wind module 121 can be limited by the upper and lower retaining rings 112 to prevent the entire side wind module 121 from tilting toward the inner side of the granulating chamber 1, thereby ensuring the installation stability of the side wind module 121.

[0057] In addition, since each positioning plate 126 is respectively fitted with the corresponding retaining ring 112, the connection area between the side wind module 121 and the frame 110 is increased, the connection sealing between the side wind module 121 and the retaining ring 112 of the frame 110 is correspondingly improved, thereby reducing the possibility of air leakage.

[0058] Optionally, combined Figure 6 and Figure 7 As shown, the frame body 111 includes a support column 1110, and a preset interval 1120 is provided between the support column 1110 and the retaining ring 112. The side wind module 121 also includes a fastener 123, and a partial structure of the air chamber 122 is located within the interval 1120. The fastener 123 is used to detachably connect the support column 1110 and the air chamber 122.

[0059] Specifically, the fastener 123 can be a snap-on structure, a connecting plate, a connecting rod structure, a bolt fastener, etc. As long as the various methods of fastener 123 that can detachably install the air chamber 122 on the support column 1110 of the frame 110 are applicable to the present technical solution, no specific limitation is made here.

[0060] The size of the spacer 1120 along the radial direction of the frame 110 may be greater than or equal to a partial structure of the plenum 122 to ensure that the partial structure of the plenum 122 can be inserted into the spacer 1120 .

[0061] In this optional embodiment, the air chamber 122 can be installed on the frame 110 in the following manner. For example, a partial structure of the air chamber 122 is inserted into the gap 1120. At this time, the retaining ring 112 and the support column 1110 limit the air chamber 122 of the side wind module 121 at the corresponding position in the radial direction of the frame 110. The support column 1110 and the air chamber 122 are detachably connected by fasteners 123, so that the air chamber 122 can be quickly and stably fixed to the support column 1110 of the frame 110 by the fasteners 123, thereby preventing the air chamber 122 of the side wind module 121 from falling off the frame 110.

[0062] In addition, combined Figure 6 As shown, the frame body 111 also includes at least two support rings 1112. The two support rings 1112 can be arranged at intervals along the axial direction of the frame 110. A plurality of support columns 1110 are arranged at intervals between the two support rings 1112. The two ends of the support columns 1110 in the extension direction are respectively connected to the corresponding support rings 1112 to form the frame body 111. Therefore, the support columns 1110 are used to connect the two support rings 1112 into an integrated structure to ensure the mechanical strength of the frame 110.

[0063] The support column 1110 can be vertically arranged along the axial direction of the frame 110, or can be arranged at an angle to the axial direction of the frame 110. As long as the two support rings 1112 and the support column 1110 can be spliced ​​together to form a cylindrical frame 110, any arrangement of the support column 1110 is applicable to the present technical solution and is not specifically limited here.

[0064] Figure 4 It can be a schematic axial view of a single side wind module 121 in a vertical arrangement when installed. Figure 8 It can be a schematic diagram of the top view of the structure of multiple side wind modules 121 after assembly.

[0065] Optionally, each air chamber 122 can be assembled with the frame 110 in the following manner, for example, by combining Figure 4 and Figure 8As shown, the air chamber 122 includes an air chamber body 1221 and a pressure plate 1222, the air chamber body 1221 is provided with the air outlet 1251, the end of the air chamber body 1221 away from the air outlet 1251 is connected to the pressure plate 1222, and the pressure plate 1222 is located in the interval 1120; the fastener 123 is passed through the support column 1110 and abuts against or separates from the pressure plate 1222.

[0066] Specifically, the air chamber body 1221 may be a shell structure with an air cavity provided inside, and an air outlet 1251 may be provided at a position of the air chamber body 1221 close to the inner side of the granulating chamber 1, and the air outlet direction or extension direction of the air outlet 1251 may be tangent to the inner wall of the granulating chamber 1, and one end of the air chamber body 1221 away from the air outlet 1251 is connected to a pressure plate 1222, and the pressure plate 1222 may be a vertically arranged arc plate, or a vertically arranged straight plate structure, and the thickness of the pressure plate 1222 may be smaller than the thickness of the air chamber body 1221.

[0067] In this embodiment, the fastener 123 may be a bolt structure, and at least one threaded hole may be provided on the support column 1110 , and the fastener 123 is threadedly connected to the threaded hole of the support column 1110 .

[0068] The radial dimension of the spacer 1120 along the frame 110 is greater than or equal to the thickness of the pressing plate 1222 to ensure that at least a portion of the pressing plate 1222 can be inserted into the spacer 1120 .

[0069] In this optional embodiment, the air chamber 122 can be fixed to the side wall of the frame 110 in the following manner. For example, the pressure plate 1222 of the air chamber 122 is inserted into the gap 1120 between the retaining ring 112 and the support column 1110 of the frame 110, and then the fastener 123 is passed through the support column 1110 and can be rotated forward to abut against the pressure plate 1222. At this time, the retaining ring 112 and the support column 1110 and the fastener 123 arranged on the support column 1110 are used to realize the detachable installation of a single side wind module 121 on the frame 110; one side wind module 121 can be installed between two adjacent support columns 1110 in the frame 110, and the other side wind modules 121 can be arranged along the circumference of the frame 110 according to the above-mentioned installation method. The multiple side wind modules 121 arranged in a ring shape and installed on the frame 110 constitute the side wind ring assembly 120.

[0070] When the side wind module 121 needs to be disassembled, the fastener 123 only needs to be rotated in the reverse direction to gradually move the fastener 123 away from the pressure plate 1222. At this time, after the pressure plate 1222 in the side wind module 121 loses the top force of the fastener 123, it can be manually disassembled and separated from the frame 110.

[0071] Optionally, combined Figure 3 and Figure 8 As shown, along the circumference of the frame 110 , opposite ends of one side wind module 121 are respectively connected to two adjacent side wind modules 121 .

[0072] Specifically, since along the circumference of the frame 110, the two ends of a side wind module 121 along the circumference are respectively connected to two adjacent side wind modules 121, so that a plurality of side wind modules 121 are arranged in a ring shape to constitute a side wind ring assembly 120, not only can the plurality of single side winds blown into the inner side of the granulating chamber 1 by the plurality of side wind modules 121 form annular side wall winds, which effectively blow and cool the granulated particles in the granulating chamber 1 orthogonally (almost perpendicular to the flight direction of the particles), but also the gap between two adjacent side wind modules 121 can be reduced to reduce the possibility of air leakage.

[0073] Optionally, combined Figure 3 and Fig. 9 As shown, the air outlet 1251 is arranged at the annular installation window and does not protrude from the inner wall of the granulating chamber 1.

[0074] Specifically, the air outlet 1251 of each side wind module 121 is arranged at the annular installation window to ensure that the single stream of side wind blown out from the air outlet 1251 of the side wind module 121 can completely enter the interior of the granulation chamber 1 .

[0075] The air outlet 1251 does not protrude from the inner wall of the granulating chamber 1 , which means that the air outlet 1251 may be flush with the inner wall of the granulating chamber 1 , or the air outlet 1251 may be located outside the inner wall of the granulating chamber 1 .

[0076] In this optional embodiment, since the air outlet 1251 of each side wind module 121 is arranged at the annular installation window and does not protrude from the inner wall of the granulation chamber 1, it is equivalent to that the air outlet 1251 of each side wind module 121 is hidden in the annular installation window of the granulation chamber 1, which effectively reduces the high-speed flying granulated particles inside the granulation chamber 1 from entering or adhering to the air outlet 1251 of each side wind module 121, avoids the air outlet 1251 of the side wind module 121 from being blocked, and correspondingly extends the service life of the side wind ring assembly 120.

[0077] A centrifugal granulation device provided in an embodiment of the present invention comprises a granulation chamber 1, a fluidized bed device 2, and the side wind blowing cooling and anti-sticking wall device 100 as described in the above embodiment, and also comprises a cooling water mist device 200.

[0078] The beneficial effects of the centrifugal granulation equipment of this embodiment relative to the prior art are the same as those of the above-mentioned side wind blowing cooling and wall-preventing device 100, and will not be described in detail here.

[0079] Optionally, combined Fig.10As shown, the cooling water mist device 200 includes a cold water main pipe 210, a cold air main pipe 220, a mixing structure 230, an air supply structure 270 and a water supply structure 260. One end of the cold water main pipe 210 and the cold air main pipe 220 are respectively connected to the water supply structure 260 and the air supply structure 270, and the other end of the cold water main pipe 210 and the cold air main pipe 220 are connected to the mixing structure 230. The mixing structure 230 is connected to the air intake structure 124 of the side wind purge cooling and anti-sticking wall device 100. The mixing structure 230 is used to atomize the water output from the cold water main pipe 210 and mix it evenly with the cold air provided by the cold air main pipe 220 to form a mixed water mist, and transport it to the air intake structure 124 of the side wind purge cooling and anti-sticking wall device 100.

[0080] Specifically, the air supply structure 270 may be an air compressor, a blower or other equipment that can generate a certain pressure; the water supply structure 260 may be a water tank, a faucet, etc.; the mixing structure 230 may be a nozzle structure, which is used to atomize the cold water provided by the water supply structure 260 and fully mix it with the cold air provided by the air supply structure 270 to spray out a mixed water mist with a certain pressure.

[0081] Combination Fig.10 As shown, the cooling water mist device 200 also includes a first regulating valve 240, a second regulating valve 250, a collecting pipe 280 and a plurality of branch pipes 290, wherein the first regulating valve 240 is arranged on the cold water main pipe 210, the second regulating valve 250 is arranged on the cold air main pipe 220, the mixing structure 230 is connected to the collecting pipe 280, one ends of the plurality of branch pipes 290 are respectively connected to the collecting pipe 280, and the other ends of the plurality of branch pipes 290 are respectively connected to the air inlet interface 1241 of the corresponding side wind module 121.

[0082] In this optional embodiment, the cooling water mist device 200 can work in the following manner. For example, cold air is sent to the mixing structure 230 by the air supply structure 270 (such as a blower or air compressor equipment) through the cold air main pipe 220 and the second regulating valve 250, and cold water is sent to the mixing structure 230 by the water supply structure 260 (such as a water pump and a water tank) through the cold water main pipe 210 and the first regulating valve 240. Then, the mixing structure 230 mixes the cold water and the cold air evenly and atomizes them through a nozzle to form a mixed water mist. The mixed water mist flows into the collecting pipe 280 and then enters The split flows enter the air inlet interface 1241 of the corresponding side wind module 121 through each branch pipe 290, and then enter the air chamber 122 of the corresponding side wind module 121 and blow into the inner side of the granulation chamber 1 from the air outlet 1251 to form a single side wind. Multiple single side winds corresponding to multiple side wind modules 121 form annular side wall wind (annular airflow) along the circumferential direction of the frame 110 to disturb the high-speed flying granulated particles, so as to force the granulated particles to move in the circumferential direction, reduce the impact force of hitting the wall, and efficiently cool the high-temperature granulated particles. The second regulating valve 250 and the first regulating valve 240 can respectively adjust the flow of cold air and cold water to achieve precise quantitative control.

[0083] Figure 1 It is a schematic diagram of the cross-sectional structure of the centrifugal granulation equipment along its radial direction.

[0084] Combination Figure 1 As shown, the centrifugal granulation equipment mainly includes a buffer device, a granulation mechanism, a side wind sweeping cooling and anti-sticking wall device 100, a cooling water mist device 200, a fluidized bed device 2 and a granulation chamber device; wherein the buffer device mainly includes a buffer tank 10 and a guide pipe 3, wherein the inner wall of the buffer tank 10 is covered with a high temperature resistant material. The buffer device is mainly used to buffer high temperature molten material 101, and supply the molten material 101 to the granulation mechanism according to the process requirements. The buffer device needs to keep the molten material 101 warm and control the flow according to the process requirements. A discharge port is provided at the bottom end of the buffer tank 10, and the discharge port is connected to the granulation rotor 4 through the guide pipe 3, so that the molten material 101 in the buffer tank 10 flows into the granulation rotor 4 of the granulation mechanism along the guide pipe 3.

[0085] The granulation mechanism mainly includes a granulation rotor 4, a transmission shaft 5, a drive motor 6 and other related accessories. The motor shaft of the drive motor 6 is fixedly connected to the bottom end of the transmission shaft 5 upward, and the top end of the transmission shaft 5 is fixedly connected to the granulation rotor 4. A hot air outlet 12 can be opened on the top wall of the granulation chamber 1; the drive motor 6 is used to drive the granulation rotor 4 to rotate at a high speed through the transmission shaft 5, so that the molten material 101 in the granulation rotor 4 forms approximately spherical liquid small particles under the action of centrifugal force, gravity and friction, and gradually cools and solidifies in flight, and obtains hot air through heat exchange. The hot air can be discharged from the hot air outlet 12 and can be transported to the downstream as a heat source for use.

[0086] The fluidized bed device 2 mainly includes a cold air inlet 11 arranged on the side wall of the granulation chamber 1, a fluidized bed 21, and a plurality of hoods 22 and other auxiliary parts arranged on the fluidized bed 21; a discharge port can be arranged at the bottom of the granulation chamber 1 at a position corresponding to the rotary discharger 9. The main function of the fluidized bed device 2 is to make the particles falling on the fluidized bed 21 with a certain inclination form a boiling state under the action of the cold air flow entering upward from the cold air inlet 11 to enhance the cooling effect on the granulated particles, and gradually flow downward into the silo 8, and be discharged from the outside of the granulation chamber 1 through the rotary discharger 9 and the discharge port.

[0087] The granulation chamber device mainly includes the granulation chamber 1, water-cooled wall, silo 8, rotary discharger 9 and other auxiliary parts, wherein the main body of the granulation chamber 1 can be a cylindrical structure, and a steel structure shell can be used as a skeleton, and the inner wall is lined with a heat-resistant material of a specific thickness to prevent heat loss; the side wind ring assembly 120 can be an annular box structure; the silo 8 is a funnel-shaped structure, and multiple silos 8 can be arranged as needed during structural design, or they can be combined into one silo 8; the rotary discharger 9 is matched with the silo 8 one-to-one, and the top of the silo 8 can be connected to the bottom of the fluidized bed 21, and the rotary discharger 9 can be set at the bottom of the silo 8; the rotary discharger 9 can be driven by its own motor and started and stopped according to the instructions of the main control system. The fins of the rotary discharger 9 have a stirring effect on the particles in the silo 8, which can improve the fluidity of the granular material, and at the same time have a certain sealing effect on the hot air in the granulation chamber 1.

[0088] The working principle of the centrifugal granulation equipment is as follows:

[0089] The molten material 101 in the buffer tank 10 enters the granulation rotor 4 through the guide pipe 3, and the granulation rotor 4 is driven by the drive motor 6 through the transmission shaft 5 to rotate at a high speed, so that the molten material 101 is formed into approximately spherical liquid small particles under the action of centrifugal force, gravity, and friction. The liquid small particles are cooled by the cold wind from the wind cap 22 on the fluidized bed 21 during flight, so that the surface of the liquid small particles is quickly solidified into a hard shell to form two-phase particles (i.e., solid outside and liquid inside). The two-phase particles fly in a parabolic path to form a two-phase particle flight belt 7 (see Figure 1 As shown), the two-phase particles then stop flying and fall onto the fluidized bed 21 under the obstruction of the annular sidewall wind generated by the side wind ring assembly 120.

[0090] The cold air can be provided by a blower, enters the interior of the granulation chamber 1 through the cold air inlet 11 and flows upward to the fluidized bed 21, and is blown out to the surroundings through a plurality of small holes arranged obliquely downward in the circumferential direction of the wind hood 22, so as to form a plurality of turbulent airflows on the surface of the fluidized bed 21; then, the two-phase particles falling into the fluidized bed 21 are boiled under the action of the plurality of turbulent airflows, gradually fall into the silo 8 along the inclined fluidized bed 21, and are discharged through the rotary discharging device 9; the airflow cools the high-temperature granulated particles while obtaining heat to form high-temperature hot air, and the hot air is discharged from the hot air outlet 12 and sent to specific facilities (such as a hot air boiler, etc.) as a heat source, so as to realize the heat energy recovery of the high-temperature molten material 101.

[0091] The side wind purge cooling and anti-sticking wall device 100 used for centrifugal granulation involved in the present invention utilizes a plurality of side wind modules 121 to assemble a side wind ring assembly 120. The modular assembly of the side wind ring assembly 120 can effectively reduce the manufacturing and transportation costs, facilitate the disassembly and replacement of the side wind ring assembly 120, and easily implement the maintenance of a single side wind module 121. After disassembly, the adhesive on the wall of each side wind module 121 can be cleaned efficiently and with high quality using special tools in an offline manner to restore the optimal performance of the side wind ring assembly 120.

[0092] The side wind ring assembly 120 is formed by assembling a plurality of side wind modules 121 arranged in a ring shape. The plurality of side wind modules 121 blow out single side winds (airflows) tangentially along the circumference of the frame 110 to form a ring-shaped side wall wind.

[0093] The side wind purge cooling and wall-sticking prevention device 100 provided by the present invention can effectively disturb the flying direction of the two-phase particles hitting the wall to reduce the probability of wall sticking, simultaneously increase the air time, increase the cooling depth, and strengthen the cooling effect, thereby solving the problem of easy wall sticking of particles and effectively extending the maintenance cycle. In addition, the device adopts a modular assembly form, which is convenient for assembly and disassembly, is conducive to equipment maintenance, reduces the difficulty of maintenance work, and effectively improves the efficiency of maintenance work.

[0094] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A side wind blowing cooling and anti-sticking wall device, applied to a centrifugal granulation device, the centrifugal granulation device comprising a granulation chamber (1) and a fluidized bed device (2) arranged in the granulation chamber (1), characterized in that: The side wind blowing, cooling and anti-sticking wall device (100) comprises a frame (110) and a side wind ring assembly (120); an annular installation window is arranged on the side wall of the granulating chamber (1) above the fluidized bed device (2); the frame (110) is arranged on the annular installation window; the side wind ring assembly (120) is detachably arranged in the frame (110); the side wind ring assembly (120) has an air intake structure (124) and an air outlet structure (125); the air intake structure (124) is used to connect to the cooling water mist device (200); the air outlet structure (125) faces the interior of the granulating chamber (1); the side wind ring assembly (120) is used to convert the mixed water mist provided by the cooling water mist device (200) into an annular side wall wind, so as to blow and cool the flying particles in the granulating chamber (1).

2. The side wind blowing cooling and anti-sticking wall device according to claim 1 is characterized in that: The side wind ring assembly (120) comprises a plurality of side wind modules (121); the frame (110) is a cylindrical structure; the plurality of side wind modules (121) are mounted on the frame (110) in a circular arrangement; the air intake structure (124) comprises a plurality of air intake interfaces (1241); the air outlet structure (125) comprises a plurality of air outlets (1251); each of the side wind modules (121) is provided with a corresponding air intake interface (1241) and a corresponding air outlet (1251).

3. The side wind blowing cooling and anti-sticking wall device according to claim 2 is characterized in that: The side wind module (121) comprises an air chamber (122), an air inlet interface (1241) and an air outlet (1251); the air chamber (122) is a shell structure with an air cavity provided inside; the air inlet interface (1241), the air cavity and the air outlet (1251) are connected in sequence; the air inlet interface (1241) is arranged on the outside of the air chamber (122); and the extension direction of the air outlet (1251) is tangent to the inner wall of the granulating chamber (1).

4. The side wind blowing cooling and anti-sticking wall device according to claim 3 is characterized in that: The frame (110) includes a frame body (111) and two retaining rings (112), wherein the two retaining rings (112) are spaced apart along the axial direction of the frame body (111); the side wind module (121) also includes two positioning plates (126), wherein the positioning plates (126) are respectively arranged at both ends of the air chamber (122) in the vertical direction, and each positioning plate (126) is respectively arranged to fit with the corresponding retaining ring (112).

5. The side wind blowing cooling and anti-sticking wall device according to claim 4 is characterized in that: The frame body (111) comprises a support column (1110), a preset interval (1120) is provided between the support column (1110) and the retaining ring (112), the side wind module (121) further comprises a fastener (123), a part of the structure of the air chamber (122) is located in the interval (1120), and the fastener (123) is used for detachably connecting the support column (1110) and the air chamber (122).

6. The side wind blowing cooling and anti-sticking wall device according to claim 5 is characterized in that: The air chamber (122) comprises an air chamber body (1221) and a pressure plate (1222); the air chamber body (1221) is provided with the air outlet (1251); one end of the air chamber body (1221) away from the air outlet (1251) is connected to the pressure plate (1222); the pressure plate (1222) is located in the interval (1120); the fastener (123) is passed through the support column (1110) and is in contact with or separated from the pressure plate (1222).

7. The side wind blowing cooling and anti-sticking wall device according to claims 3 to 6, characterized in that: Along the circumference of the frame (110), opposite ends of a side wind module (121) are respectively connected to two adjacent side wind modules (121).

8. The side wind blowing cooling and anti-sticking wall device according to claim 7 is characterized in that: The air outlet (1251) is arranged at the annular installation window and does not protrude from the inner wall of the granulation chamber (1).

9. A centrifugal granulation device, characterized in that: The invention comprises a granulation chamber (1), a fluidized bed device (2), and a side wind blowing cooling and anti-sticking wall device as claimed in any one of claims 1 to 8, and also comprises a cooling water mist device (200).

10. The centrifugal granulation equipment according to claim 9, characterized in that: The cooling water mist device (200) comprises a cold water main pipe (210), a cold air main pipe (220), a mixing structure (230), an air supply structure (270) and a water supply structure (260); one end of the cold water main pipe (210) and the cold air main pipe (220) are respectively connected to the water supply structure (260) and the air supply structure (270); the other ends of the cold water main pipe (210) and the cold air main pipe (220) are connected to the mixing structure (230); the mixing structure (230) is connected to the air intake structure (124) of the side wind blowing cooling and anti-sticking wall device (100); the mixing structure (230) is used to atomize the water output from the cold water main pipe (210) and mix it evenly with the cold air provided by the cold air main pipe (220) to form a mixed water mist, and then transport it to the air intake structure (124) of the side wind blowing cooling and anti-sticking wall device (100).

Images