A desulfurization tower spraying device

Abstract

The utility model discloses a desulfurizing tower spraying device relates to industrial flue gas purification equipment technical field, aims at solving the problem that current desulfurizing tower spraying device cannot adapt to the flue gas load variation. The device includes the desulfurizing tower body, and the opposite protection cover of tower body inner wall both sides is equipped, and the detachable installation electric telescopic link in the protection cover, and its output end penetrates the protection cover and is connected L type support, and the annular frame of the lower end of support is connected with the reinforcing rib, and the spiral-shaped spray pipe of the lower end of frame is installed, and the branch pipe of the lower end of spray pipe is evenly equipped with the silicon carbide spray head, and the hard pipe of the input end of spray pipe is connected, and the hard pipe is connected with the connecting head of tower body lateral wall through the hose, and the connecting head is connected with the input pipe and the external slurry supply system and is docked. Electric telescopic link can drive spray pipe to lift and adapt to different flue gas load, and the detachable protection cover of protection cover and the quick plug design are convenient for maintenance. The device is stable in desulfurization efficiency, strong in corrosion resistance, convenient in operation and maintenance, and is suitable for coal-fired power plant, steel plant and other industrial desulfurization scene.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial flue gas purification equipment, specifically a desulfurization tower spray device. Background Technology

[0002] In industrial production processes, equipment such as coal-fired boilers and steel smelting furnaces generate a large amount of sulfur-containing flue gas. Direct emission of such gas can lead to serious environmental problems such as acid rain and smog. Therefore, it is necessary to purify the flue gas through desulfurization equipment. Desulfurization towers are currently the mainstream flue gas desulfurization equipment, and spray devices, as the core components of desulfurization towers, directly determine the desulfurization efficiency and equipment operation stability.

[0003] Existing desulfurization tower spray systems mostly adopt a fixed-layer spray structure, meaning the spray pipes are fixedly installed at a specific height inside the desulfurization tower via supports, making it impossible to adjust the spray position according to changes in flue gas load. When industrial equipment is operating at low load, the flue gas volume and velocity decrease, and the fixed-height spray layer is prone to mismatch between the slurry atomization area and the flue gas trajectory. This results in some areas being sprayed excessively, leading to slurry waste, while other areas are left unsprayed, creating desulfurization blind spots and causing fluctuations in desulfurization efficiency. Conversely, when the equipment is operating at high load, the fixed spray layer cannot cover all the rising flue gas, similarly affecting the desulfurization effect.

[0004] Therefore, those skilled in the art have provided a desulfurization tower spray device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a desulfurization tower spray device to solve the problems mentioned in the background art.

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

[0007] A desulfurization tower spraying device includes a desulfurization tower body. Protective covers are fixedly mounted on both sides of the inner wall of the tower body. An electric telescopic rod is detachably installed inside the protective covers via bolts. The output end of the electric telescopic rod penetrates vertically through the bottom of the protective cover and is fixedly connected to an L-shaped bracket. An annular frame is fixedly connected to the lower end of the L-shaped bracket. Multiple reinforcing ribs arranged at equal angles are welded inside the annular frame. A spiral spray pipe is fixedly connected to the lower end of the annular frame. Several branch pipes are evenly arranged at the lower end of the spiral spray pipe, and a spray head is fixedly connected to the output end of each branch pipe.

[0008] As a further embodiment of this utility model: the top of the protective cover is an open end and is detachably covered with a protective cover plate by bolts.

[0009] As a further improvement of this utility model, a rigid pipe is fixedly connected to the input end of the spiral nozzle in the vertically upward direction.

[0010] As a further improvement of this utility model: a connector is fixedly installed on the side wall of the desulfurization tower body, with one end of the connector located inside the desulfurization tower body and the other end extending to the outside of the desulfurization tower body.

[0011] As a further improvement of this utility model: the end of the connector located inside the desulfurization tower body is fixedly connected to the rigid pipe by a quick plug and a flexible hose.

[0012] As a further improvement of this utility model: the end of the connector located outside the desulfurization tower body is fixedly connected to an input pipe for connecting to an external slurry supply system.

[0013] As a further improvement of this utility model, the hose is a reinforced polytetrafluoroethylene corrugated pipe, and the length of the hose is reserved with a redundancy to accommodate the maximum extension stroke of the electric telescopic rod.

[0014] As a further improvement of this utility model: the penetration point between the electric telescopic rod and the bottom of the protective cover is provided with a multi-layer sealing structure, the multi-layer sealing structure including a PTFE dustproof ring, a fluororubber sealing ring and a stainless steel retaining ring arranged in sequence.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The desulfurization tower spray device provided by this utility model can drive the ring frame and spray pipe to rise and fall through an electric telescopic rod. It can flexibly adjust the spray height according to the flue gas load, adapt to different working conditions, and further ensure the stability of desulfurization effect. The overall device has a reasonable structural design and stable and reliable operation, which can provide efficient and stable support for desulfurization operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a desulfurization tower spray device.

[0018] Figure 2 This is a schematic diagram of the internal structure of the desulfurization tower body in a desulfurization tower spray device.

[0019] Figure 3 This is a schematic diagram of the structure of a spray head in a desulfurization tower spray device.

[0020] Figure 4 This is a schematic diagram of the frame structure in a desulfurization tower spray device.

[0021] Figure 5 This is a schematic diagram of the protective cover and electric telescopic rod in a desulfurization tower spray device.

[0022] In the diagram: 1. Desulfurization tower body; 2. Protective cover; 3. Protective cover plate; 4. Electric telescopic rod; 5. Support; 6. Frame; 7. Spiral spray pipe; 8. Branch pipe; 9. Spray head; 10. Rigid pipe; 11. Flexible hose; 12. Connector; 13. Input pipe; 14. Reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-5 This embodiment provides a desulfurization tower spray device, including a desulfurization tower body 1. A protective cover 2 is fixedly installed on both sides of the inner wall of the desulfurization tower body 1 by expansion bolts. The protective cover 2 is made of 316L stainless steel and has an overall rectangular box structure, which can effectively isolate the corrosive flue gas and slurry inside the tower from erosion of the internal components.

[0025] The protective cover 2 has an open top, which is detachably covered by a protective cover plate 3 made of 316L stainless steel. An anti-corrosion lining can be fitted to the inside of the cover plate to further enhance its anti-corrosion effect. An electric telescopic rod 4 is detachably installed inside the protective cover 2 via bolts. The electric telescopic rod 4 uses a multi-stage telescopic structure, which can stably drive the lifting and lowering of subsequent components. The piston rod surface of the electric telescopic rod 4 is coated with a ceramic anti-corrosion coating, which can effectively resist slurry erosion and corrosion, extending its service life.

[0026] The output end of the electric telescopic rod 4 penetrates vertically through the bottom of the protective cover 2. A multi-layered sealing structure is provided at the penetration point. This multi-layered sealing structure includes, from the inside out, a PTFE dustproof ring, a fluororubber sealing ring, and a stainless steel retaining ring. The PTFE dustproof ring prevents dust from entering, the fluororubber sealing ring is suitable for the highly corrosive environment inside the tower, and the stainless steel retaining ring prevents deformation of the seal. The three components work together to achieve a reliable seal, preventing slurry and flue gas from seeping into the interior of the protective cover 2. An L-shaped bracket 5 is fixedly connected to the output end of the electric telescopic rod 4. The bracket 5 is made of duplex stainless steel 2205.

[0027] The lower end of the support 5 is fixedly connected to an annular frame 6 by welding. The annular frame 6 is made of 316L stainless steel, and its diameter is adapted to the inner diameter of the desulfurization tower body 1. Multiple reinforcing ribs 14 arranged at equal angles are welded inside the annular frame 6. The reinforcing ribs 14 are also made of 316L stainless steel, which can effectively enhance the structural stability of the annular frame 6 and prevent it from deforming during lifting.

[0028] The lower end of the annular frame 6 is fixedly connected to a spiral nozzle 7, which is made of FRP reinforced plastic. Several branch pipes 8 are evenly arranged at the lower end of the spiral nozzle 7. The branch pipes 8 are also made of FRP reinforced plastic, and the output end of each branch pipe 8 is fixedly connected to a spray head 9 by a thread.

[0029] The spray head 9 is a silicon carbide spiral nozzle with an atomization angle of 120°-150°, which increases the contact area with the flue gas.

[0030] The input end of the spiral nozzle 7 is fixedly connected to a rigid pipe 10 in a vertically upward direction. The rigid pipe 10 is made of FRP reinforced plastic and has the same diameter as the spiral nozzle 7. A connector 12 is fixedly installed on the side wall of the desulfurization tower body 1 at the position corresponding to the rigid pipe 10. The connector 12 is made of 316L stainless steel, with one end located inside the desulfurization tower body 1 and the other end extending to the outside of the desulfurization tower body 1.

[0031] The connector 12, located inside the desulfurization tower body 1, is fixedly connected to the rigid pipe 10 via a quick-connect fitting with a flexible hose 11. The flexible hose 11 is a reinforced polytetrafluoroethylene corrugated pipe, and its length is designed to accommodate the maximum extension stroke of the electric telescopic rod 4, ensuring that the hose 11 will not be broken or excessively bent when the electric telescopic rod 4 drives the frame 6 to rise or fall. The connector 12, located outside the desulfurization tower body 1, is fixedly connected to an input pipe 13, which is made of 316L stainless steel. Its end is connected to the outlet pipe of the circulating pump of the external slurry supply system to provide desulfurization slurry to the spraying device.

[0032] When in use, the circulation pump of the external slurry supply system is started first. The desulfurization slurry enters the hose 11 through the input pipe 13 and the connector 12, and then is transported to the spiral spray pipe 7 through the rigid pipe 10. It is then distributed to each branch pipe 8 and finally atomized through the spray head 9 and sprayed into the inside of the desulfurization tower body 1, where it fully contacts the sulfur-containing flue gas rising in the tower to achieve the desulfurization reaction.

[0033] When the spray height needs to be adjusted according to the flue gas load, a command is sent to the electric telescopic rod 4 via the external control system. The piston rod of the electric telescopic rod 4 extends or retracts, driving the bracket 5, the annular frame 6, and the spiral nozzle 7 to rise and fall vertically. During the rising and falling process, the rigid pipe 10 moves synchronously with the frame 6, and the flexible hose 11 extends or bends accordingly. Since the flexible hose 11 has sufficient redundant length, it will not affect the normal slurry delivery. At the same time, the reinforcing rib 14 at the top of the annular frame 6 ensures that the frame 6 will not deform, and the protective cover 2 and the internal sealing structure effectively isolate the slurry and flue gas, protecting the electric telescopic rod 4 from corrosion.

[0034] When the electric telescopic rod 4 needs to be inspected and maintained, first shut down the external slurry supply system and stop the slurry delivery. Then remove the protective cover plate 3 on the top of the protective cover 2, loosen the bolts that fix the electric telescopic rod 4, and the electric telescopic rod 4 can be taken out from the protective cover 2 for inspection and maintenance. There is no need to disassemble the desulfurization tower body 1 on a large scale, and the operation is convenient.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A desulfurization tower spraying device, comprising a desulfurization tower body (1), characterized in that, The inner walls of the desulfurization tower (1) are fixed with protective covers (2) on both sides. An electric telescopic rod (4) is detachably installed inside the protective cover (2) by bolts. The output end of the electric telescopic rod (4) passes through the bottom of the protective cover (2) in a vertical direction, and the output end is fixedly connected to an L-shaped bracket (5). The lower end of the L-shaped bracket (5) is fixedly connected to an annular frame (6). The annular frame (6) has multiple reinforcing ribs (14) arranged at equal angles welded inside. The lower end of the annular frame (6) is fixedly connected to a spiral spray pipe (7). The lower end of the spiral spray pipe (7) has several branch pipes (8) evenly arranged. The output end of each branch pipe (8) is fixedly connected to a spray head (9).

2. The desulfurization tower spray device according to claim 1, characterized in that, The protective cover (2) has an open end at the top and is covered with a protective cover plate (3) by bolts.

3. The desulfurization tower spray device according to claim 1, characterized in that, The input end of the spiral nozzle (7) is fixedly connected to a rigid pipe (10) in the vertical upward direction.

4. The desulfurization tower spray device according to claim 3, characterized in that, A connector (12) is fixedly installed on the side wall of the desulfurization tower body (1). One end of the connector (12) is located inside the desulfurization tower body (1), and the other end extends to the outside of the desulfurization tower body (1).

5. A desulfurization tower spraying device according to claim 4, characterized in that, The connector (12) is located inside the desulfurization tower body (1) and is fixedly connected to the rigid pipe (10) by a flexible hose (11) via a quick plug.

6. A desulfurization tower spraying device according to claim 4, characterized in that, The connector (12) is fixedly connected to an input pipe (13) for connecting to an external slurry supply system at one end outside the desulfurization tower body (1).

7. A desulfurization tower spraying device according to claim 5, characterized in that, The hose (11) is a reinforced polytetrafluoroethylene corrugated pipe, and the length of the hose (11) is reserved with a redundancy to accommodate the maximum extension stroke of the electric telescopic rod (4).

8. A desulfurization tower spray device according to claim 1, characterized in that, The electric telescopic rod (4) and the bottom of the protective cover (2) are provided with a multi-layer sealing structure, which includes a PTFE dustproof ring, a fluororubber sealing ring and a stainless steel retaining ring arranged in sequence.

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