A desulfurization agent conveying device for coal-fired boiler flue gas purification

Abstract

The utility model relates to the technical field of desulfurization agent conveying devices, and specifically, to a desulfurization agent conveying device for coal-fired boiler flue gas purification. It comprises an annular cylinder, wherein an adjustable nozzle is arranged inside the annular cylinder, wherein the adjustable nozzle comprises a plurality of hollow cylinders slidably connected to the bottom of the annular cylinder, wherein the bottom array of the hollow cylinder is fixedly connected with a nozzle, and wherein a distance adjustment component is arranged inside the annular cylinder. The utility model places the annular cylinder inside the flue, and then makes a plurality of hollow cylinders synchronously move horizontally in a direction away from the annular cylinder until the rubber pads arranged at the outer ends of the hollow cylinders are against the inner wall of the flue, so that the annular cylinder can be opened and fixed inside the flue, and then the desulfurization agent is sprayed out through the nozzle at the bottom of the hollow cylinder to desulfurize the flue gas in the flue, thereby enabling the conveyor to convey the desulfurization agent to flues of different inner diameters to treat the flue gas, so that the flue gas is mixed with the desulfurization agent to solidify the sulfur and then discharged from the flue, thereby reducing the pollution of the flue gas to the atmosphere.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurizing agent conveying devices, in particular to a desulfurizing agent conveying device for purifying flue gas of a coal-fired boiler. Background Art

[0002] As the main energy source in my country's industrial production, coal resources are widely used throughout the country. Due to the continuous increase in coal consumption, the flue gas emissions from boilers are increasing, and the pollutants such as sulfur dioxide emitted are also increasing year by year. Therefore, the flue gas from coal-fired boilers needs to be desulfurized before it can be discharged through the chimney to avoid flue gas pollution to the atmosphere and achieve industrial environmental protection and green development. Among them, dry desulfurization is increasingly being used due to its convenient installation and low equipment cost. Dry desulfurization agents are generally in powder form and are transported by powder conveying devices to react with sulfides. They have the advantages of no corrosion, no condensation, no wastewater, low cost, and simple process.

[0003] The utility model with authorization announcement number CN220558925U provides a dry desulfurizer delivery device, which diverts the flue gas and reduces the flow velocity of the flue gas through a diverter plate and ventilation holes, and drives the U-shaped spray pipe, top spray head and side spray head to spray reciprocatingly through a reciprocating component. The desulfurizer can be sprayed from all directions in the flue, so that the contact area between the desulfurizer and the flue gas is larger and the sulfur fixation effect is better.

[0004] The above-mentioned dry desulfurizer delivery device is installed on the inner wall of the flue for use. However, the placement plate in the above-mentioned device has a fixed size, so it can only be installed in a flue with a fixed inner diameter, and its applicability is poor. At the same time, the above-mentioned device is difficult to quickly remove from the flue, and the spray head is also difficult to remove from the placement plate. After the spray head is used for a long time, there is a possibility that large particles of impurities in the flue gas will clog the spray head. If the spray head cannot be cleaned regularly, the desulfurizer delivery efficiency will be reduced. In view of this, we propose a desulfurizer delivery device for coal-fired boiler flue gas purification. Summary of the invention

[0005] The purpose of the utility model is to provide a desulfurizing agent conveying device for coal-fired boiler flue gas purification to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, one of the purposes of the utility model is to provide a desulfurizer delivery device for coal-fired boiler flue gas purification, including an annular cylinder, an adjustable nozzle is arranged inside the annular cylinder, the adjustable nozzle includes a plurality of hollow cylinders slidably connected to the bottom of the annular cylinder, a nozzle is fixedly connected to the bottom array of the hollow cylinder, a distance adjustment component is arranged inside the annular cylinder, the distance adjustment component drives the plurality of hollow cylinders to move horizontally synchronously, and adjusts the distance between the outer end of the hollow cylinder and the annular cylinder, a plurality of hollow cylinders are provided with a shielding component at the inner end, a feeding component is arranged on the top of the annular cylinder, and a locking mechanism is arranged on one side of the feeding component, and after adjusting the distance between the outer end of the hollow cylinder and the annular cylinder, the locking mechanism limits the horizontal movement of the hollow cylinder and locks the position of the hollow cylinder.

[0007] As a further improvement of the present technical solution, the pitch adjustment assembly includes a rack fixedly connected to one side of the hollow cylinder, a plurality of internal gears are rotatably connected to the annular array on the inner top surface of the annular cylinder, and the plurality of internal gears are respectively meshed with the plurality of racks, and an external gear is rotatably connected to the circumferential inner wall of the annular cylinder, and the plurality of internal gears are all meshed with the external gear.

[0008] As a further improvement of the technical solution, the shielding assembly includes a hook fixedly connected to the bottom of the hollow tube near the inner end, and a plurality of sliding sleeves on the outer walls of the hooks are provided with elastic cloth.

[0009] As a further improvement of the present technical solution, the feeding assembly includes a C-tube fixedly connected to the top of the annular cylinder, and a plurality of diverter hoses are fixedly connected to the annular array of the C-tube wall, and the inner ends of the plurality of diverter hoses are respectively fixedly connected to the tops of a plurality of hollow cylinders, one end of the C-tube is fixedly connected to a pipe joint, and the other end of the C-tube is fixedly connected to a pipe end sealing wall.

[0010] As a further improvement of the present technical solution, the locking mechanism includes a right-angle frame fixedly connected to the upper surface of the annular cylinder, and the side wall of the vertical section of the right-angle frame is rotatably connected to a worm, and the upper end of one of the internal gear shafts extends above the annular cylinder and is fixedly connected to a worm wheel, and the worm wheel is meshing with the worm wheel.

[0011] As a further improvement of the technical solution, the locking mechanism also includes a vertical rod rotatably connected to the side wall of the horizontal section of the right-angle frame, and the lower end of the vertical rod and one end of the worm are fixedly connected to bevel gears, and the two bevel gears are meshed.

[0012] As a further improvement of the technical solution, a plurality of the hollow cylinders are distributed in a ring shape, and the outer ends of the hollow cylinders extend to the outside of the ring-shaped cylinder and are fixedly connected with rubber pads.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The desulfurizer conveying device for flue gas purification of coal-fired boilers is configured by placing an annular cylinder inside the flue, and then moving a plurality of hollow cylinders horizontally away from the annular cylinder synchronously until the rubber pads arranged at the outer ends of the hollow cylinders are against the inner wall of the flue. The annular cylinder can be opened and fixed inside the flue, and then the desulfurizer is sprayed out through the nozzle at the bottom of the hollow cylinder to desulfurize the flue gas in the flue. The conveyor can then convey the desulfurizer to the flue with different inner diameters to treat the flue gas, so that the flue gas is mixed with the desulfurizer to fix the sulfur and then discharged from the flue, thereby reducing the pollution of the flue gas to the atmosphere.

[0015] 2. The desulfurizer conveying device for flue gas purification of coal-fired boilers arranges elastic cloth between the inner ends of a plurality of hollow cylinders so that the flue gas can only pass through the annular cylinder from the gaps between the side walls of the plurality of hollow cylinders, thereby ensuring sufficient mixing of the flue gas and the desulfurizer and improving the flue gas desulfurization effect. At the same time, workers can easily remove the annular cylinder from the flue, and can also easily remove the hollow cylinder and the elastic cloth from the annular cylinder, so as to facilitate regular cleaning and maintenance of the nozzle and avoid clogging of the nozzle by particles in the flue gas after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the feeding assembly of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the shielding component of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the locking mechanism of the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Ring cylinder;

[0022] 2. Adjustable nozzle; 21. Hollow cylinder; 22. Nozzle; 23. Distance adjustment assembly; 231. Rack; 232. Internal gear; 233. External gear; 24. Shielding assembly; 241. Hook; 242. Elastic cloth; 25. Rubber pad;

[0023] 3. Feeding assembly; 31. C-type tube; 32. Diverter hose; 33. Pipe joint;

[0024] 4. Locking mechanism; 41. Worm gear; 42. Right-angle bracket; 43. Worm; 44. Vertical rod; 45. Bevel gear. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] See also Figure 1-Figure 4 As shown, the present embodiment provides a desulfurizing agent conveying device for flue gas purification of coal-fired boilers, comprising an annular cylinder 1, an adjustable nozzle 2 is arranged inside the annular cylinder 1, the adjustable nozzle 2 comprises a plurality of hollow cylinders 21 slidably connected to the bottom of the annular cylinder 1, a nozzle 22 is fixedly connected to the bottom array of the hollow cylinder 21, the plurality of hollow cylinders 21 are distributed in an annular shape, and the outer ends of the hollow cylinders 21 extend to the outside of the annular cylinder 1 and are fixedly connected to a rubber pad 25, a distance adjusting component 23 is arranged inside the annular cylinder 1, the distance adjusting component 23 drives the plurality of hollow cylinders 21 to move horizontally synchronously, and adjusts the distance between the outer ends of the hollow cylinders 21 and the annular cylinder 1, a feeding component 3 is arranged on the top of the annular cylinder 1, the feeding component 3 can inject powdered desulfurizing agent into the plurality of hollow cylinders 21 after being externally connected to a desulfurizing agent conveying pipeline, and the powdered desulfurizing agent is sprayed out by the plurality of nozzles 22, a locking mechanism 4 is arranged on one side of the feeding component 3, and the locking mechanism 4 is used to adjust the distance between the outer ends of the hollow cylinders 21 and the annular cylinder 1 After that, limit the horizontal movement of the hollow cylinder 21 and lock the position of the hollow cylinder 21. After the annular cylinder 1 is placed inside the flue, make the outer ends of several hollow cylinders 21 move horizontally away from the annular cylinder 1 synchronously until several rubber pads 25 are against the inner wall of the flue, and then lock the positions of several hollow cylinders 21 by locking mechanism 4, so that the annular cylinder 1 can be stretched and fixed inside the flue. Shielding components 24 are provided at the inner ends of several hollow cylinders 21, which can block the flue gas from passing through the annular cylinder 1 from the position between the inner ends of several hollow cylinders 21 after the annular cylinder 1 is fixed inside the flue. After several nozzles 22 spray out the powdered desulfurizer, the flue is opened, and the flue gas in the flue first floats from bottom to top under the annular cylinder 1. After the flue gas is mixed with the powdered desulfurizer powder, the flue gas mixed with the powdered desulfurizer powder floats to the top of the annular cylinder 1 through the channel surrounded by two adjacent hollow cylinders 21 and the inner wall of the flue, and then is discharged from the flue.

[0027] In order to synchronously adjust the positions of the plurality of hollow cylinders 21, the structure of the distance adjustment component 23 is refined. The distance adjustment component 23 includes a rack 231 fixedly connected to one side of the hollow cylinder 21, a plurality of internal gears 232 are rotatably connected to the annular array on the top surface of the annular cylinder 1, and the plurality of internal gears 232 are respectively meshed with the plurality of racks 231, and an outer gear 233 is rotatably connected to the inner wall of the annular cylinder 1, and the plurality of internal gears 232 are meshed with the outer gear 233. When the outer gear 233 rotates, the outer gear 233 drives the plurality of internal gears 232 to rotate synchronously, and the meshing transmission between the internal gear 232 and the rack 231 enables the plurality of hollow cylinders 21 to be adjusted synchronously. The hollow cylinders 21 move horizontally synchronously, and the outer ends of several hollow cylinders 21 are distributed on the same circle in the initial state. By moving several hollow cylinders 21 horizontally synchronously, the outer ends of several hollow cylinders 21 can always be distributed on the same circle. Since the smoke exhaust pipe is usually a circular tube structure, when the annular cylinder 1 is installed on the inner wall of the smoke exhaust pipe flue, the positions of several hollow cylinders 21 can be easily adjusted, so that several hollow cylinders 21 respectively drive several rubber pads 25 to move to the position where they are against the inner wall of the flue, fix the position of the device in the flue, increase the contact area between the device and the inner wall of the flue, and improve the stability of fixing the device on the inner wall of the flue.

[0028] In order to lock the position of the hollow cylinder 21 after adjusting its position so that the annular cylinder 1 can be fixed inside the flue, the locking mechanism 4 is arranged above the pitch adjustment component 23, so that the locking mechanism 4 can drive the outer gear 233 to rotate, and after the outer gear 233 rotates a certain angle, the rotation of the outer gear 233 is restricted, thereby restricting the rotation of the inner gear 232, and the stopped inner gear 232 positions the rack 231, thereby achieving the effect of positioning the hollow cylinder 21. The structure of the locking mechanism 4 is refined as follows. The locking mechanism 4 includes a right-angle frame 42 fixedly connected to the upper surface of the annular cylinder 1, and the side wall of the vertical section of the right-angle frame 42 is rotatably connected to a worm 43, the upper end of the rotating shaft of one of the inner gears 232 extends to the top of the annular cylinder 1 and is fixedly connected to a worm wheel 41, and the worm wheel 41 is meshed with the worm 43, and the locking mechanism 4 also includes a vertical rod rotatably connected to the side wall of the horizontal section of the right-angle frame 42 44, the lower end of the vertical rod 44 and one end of the worm 43 are fixedly connected with a bevel gear 45, and the two bevel gears 45 are meshed. When the vertical rod 44 is turned to drive one of the bevel gears 45 to rotate, the meshing transmission of the two bevel gears 45 drives the worm 43 to rotate, and the meshing transmission of the worm 43 and the worm wheel 41 drives one of the internal gears 232 to rotate, and the meshing transmission of the internal gear 232 and the external gear 233 drives the external gear 233 to rotate, and then the external gear 233 drives the remaining internal gears 232 to rotate synchronously, so as to achieve the purpose of synchronously adjusting the positions of several hollow cylinders 21. After several rubber pads 25 are adjusted to the position against the inner wall of the flue, stop turning the vertical rod 44, and through the self-locking property of the meshing transmission of the worm 43 and the worm wheel 41, the hollow cylinder 21 cannot move horizontally without turning the vertical rod 44, so as to achieve the purpose of locking the position of the hollow cylinder 21.

[0029] In order to enable several nozzles 22 to spray powdered desulfurizer downward so that the flue gas in the flue can be evenly mixed with the desulfurizer, the feeding assembly 3 is arranged on the top of several hollow cylinders 21. The structure of the feeding assembly 3 is detailed below. The feeding assembly 3 includes a C-tube 31 fixedly connected to the top of the annular cylinder 1, and a plurality of diversion hoses 32 are fixedly connected to the annular array of the tube wall of the C-tube 31. The inner ends of the plurality of diversion hoses 32 are respectively fixedly connected to the tops of several hollow cylinders 21. A pipe joint 33 is fixedly connected to one end of the C-tube 31, and a pipe end sealing wall is fixedly connected to the other end of the C-tube 31. After the pipe joint 33 is externally connected to the desulfurizer delivery pipeline, the desulfurizer is delivered to the inside of the C-tube 31, and the powdered desulfurizer in the C-tube 31 is then injected into the inside of several hollow cylinders 21 through the plurality of diversion hoses 32, and then sprayed downward by the plurality of nozzles 22.

[0030] In order to prevent part of the flue gas from passing through the annular cylinder 1 from the position between the inner ends of several hollow cylinders 21, causing this part of the flue gas to be discharged from the flue without being mixed with the desulfurizer, thereby reducing the quality of flue gas treatment, a shielding assembly 24 is arranged between several hollow cylinders 21, and the structure of the shielding assembly 24 is refined. The shielding assembly 24 includes a hook 241 fixedly connected to the bottom of the hollow cylinder 21 near the inner end position, and the outer walls of several hooks 241 are slidably sleeved with elastic cloth 242. When several hollow cylinders 21 move horizontally synchronously in a direction away from the annular cylinder 1, the elastic cloth 242 is elastically stretched synchronously. The stretched and tightened elastic cloth 242 still has a blocking effect on the flue, so that the flue gas in the flue can only pass through the annular cylinder 1 from the gap between the side walls of the several hollow cylinders 21.

[0031] In summary, the working principle of the present scheme is as follows: the annular cylinder 1 is moved to the inside of the flue, and the vertical rod 44 is turned to synchronously adjust the positions of the plurality of hollow cylinders 21, so that the plurality of hollow cylinders 21 are synchronously moved horizontally in the direction away from the annular cylinder 1, until the plurality of rubber pads 25 are against the inner wall of the flue, and the annular cylinder 1 is stretched and fixed inside the flue, and then the pipe joint 33 is externally connected to the desulfurization agent delivery pipeline, and after the desulfurization agent is injected into the pipe joint 33, the plurality of nozzles 22 spray the desulfurization agent downward, and when the flue gas in the flue flows from bottom to top, the flue gas is blocked by the elastic cloth 242, so that the flue gas can only pass through the annular cylinder 1 from the gap between the side walls of the plurality of hollow cylinders 21, and in this process, the flue gas is fully mixed with the desulfurization agent sprayed from the nozzle 22, and the desulfurization effect of the desulfurization agent is exerted to desulfurize the flue gas.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A desulfurization agent delivery device for coal-fired boiler flue gas purification, comprising an annular cylinder (1), characterized in that: An adjustable nozzle (2) is provided inside the annular cylinder (1), the adjustable nozzle (2) comprising a plurality of hollow cylinders (21) slidably connected to the bottom of the annular cylinder (1), a nozzle (22) being fixedly connected in array to the bottom of the hollow cylinder (21), a distance adjustment component (23) is provided inside the annular cylinder (1), the distance adjustment component (23) drives the plurality of hollow cylinders (21) to move horizontally synchronously, and adjusts the distance between the outer end of the hollow cylinder (21) and the annular cylinder (1), a shielding component (24) is provided at the inner end of the plurality of hollow cylinders (21), a feeding component (3) is provided at the top of the annular cylinder (1), a locking mechanism (4) is provided on one side of the feeding component (3), and after adjusting the distance between the outer end of the hollow cylinder (21) and the annular cylinder (1), the locking mechanism (4) limits the horizontal movement of the hollow cylinder (21) and locks the position of the hollow cylinder (21).

2. The desulfurizing agent delivery device for coal-fired boiler flue gas purification according to claim 1 is characterized in that: The pitch adjustment assembly (23) comprises a rack (231) fixedly connected to one side of the hollow cylinder (21); a plurality of internal gears (232) are rotatably connected in an annular array on the inner top surface of the annular cylinder (1); the plurality of internal gears (232) are respectively meshed with the plurality of racks (231); an outer gear (233) is rotatably connected to the circumferential inner wall of the annular cylinder (1); the plurality of internal gears (232) are all meshed with the outer gear (233).

3. The desulfurizing agent delivery device for coal-fired boiler flue gas purification according to claim 1, characterized in that: The shielding assembly (24) comprises a hook (241) fixedly connected to the bottom of the hollow cylinder (21) near the inner end, and a plurality of the hooks (241) are slidably sleeved with elastic cloth (242) on their outer walls.

4. The desulfurizing agent delivery device for coal-fired boiler flue gas purification according to claim 1, characterized in that: The feeding assembly (3) comprises a C-shaped tube (31) fixedly connected to the top of the annular tube (1); a plurality of diverter hoses (32) are fixedly connected in an annular array to the tube wall of the C-shaped tube (31); the inner ends of the plurality of diverter hoses (32) are respectively fixedly connected to the tops of a plurality of hollow tubes (21); one end of the C-shaped tube (31) is fixedly connected to a pipe joint (33); and the other end of the C-shaped tube (31) is fixedly connected to a tube end sealing wall.

5. The desulfurizing agent conveying device for coal-fired boiler flue gas purification according to claim 2 is characterized in that: The locking mechanism (4) comprises a right-angle frame (42) fixedly connected to the upper surface of the annular cylinder (1), the side wall of the vertical section of the right-angle frame (42) being rotatably connected to a worm (43), the upper end of a rotating shaft of one of the internal gears (232) extending above the annular cylinder (1) and being fixedly connected to a worm wheel (41), and the worm wheel (41) being meshed with the worm wheel (43).

6. The desulfurizing agent conveying device for coal-fired boiler flue gas purification according to claim 5, characterized in that: The locking mechanism (4) further comprises a vertical rod (44) rotatably connected to the side wall of the horizontal section of the right-angle frame (42), the lower end of the vertical rod (44) and one end of the worm (43) are both fixedly connected to a bevel gear (45), and the two bevel gears (45) are meshed.

7. The desulfurizing agent delivery device for coal-fired boiler flue gas purification according to claim 1, characterized in that: The plurality of hollow cylinders (21) are distributed in an annular shape, and the outer ends of the hollow cylinders (21) extend to the outside of the annular cylinder (1) and are fixedly connected to rubber pads (25).

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