A tube-type integrated flue gas cooling and dust removal device

Abstract

The utility model provides a tube-in-tube integrated flue gas cooling and dust removal device, including a support frame, a processing chamber is provided inside the support frame, a plurality of ash hoppers are provided at the bottom of the processing chamber, a flow guide and ash blocking component is provided inside the ash hopper, an ash unloading device is provided at the bottom output end of the ash hopper, and a uniformly distributed pipe group matched with the plurality of ash hoppers is provided inside the processing chamber. The utility model has the following beneficial effects: the integrated device provided by the utility model is designed near the flue gas collection port, and since the flue gas moves vertically in the uniformly distributed pipe row and the flue gas flow rate is very slow, it is more conducive to the rapid sedimentation of dust in the flue gas, so that the dust and flue gas are separated, and the dust content of the flue gas is reduced. The flue gas after pre-dust removal has been captured due to its high density and easy-to-deposit dust, and the dust carried in the flue gas is not easy to deposit. In addition, the flue gas flow rate in the rear flue is accelerated, which greatly alleviates the problem of dust removal flue blockage in the steel industry.

Description

Technical Field

[0001] The utility model discloses a tube-type integrated device for flue gas cooling and dust removal, belonging to the field of flue gas treatment equipment. Background Art

[0002] In the existing flue gas treatment equipment, during the process of dust removal on high-temperature flue gas through the uniformly distributed pipes, the uniformly distributed pipes will be in a high-temperature state, thereby making the temperature of the uniformly distributed pipes relatively high. Being in a high-temperature state for a long time will affect the service life of the uniformly distributed pipes and is not conducive to the use of the flue gas treatment equipment. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a tube-in-tube integrated flue gas cooling and dust removal device.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A tube-in-tube integrated flue gas cooling and dust removal device comprises a supporting frame, a processing chamber is provided inside the supporting frame, a plurality of ash hoppers are provided at the bottom of the processing chamber, a flow guide and ash blocking assembly is provided inside the ash hopper, an ash unloading device is provided at the bottom output end of the ash hopper, a uniformly distributed pipe group matched with the plurality of ash hoppers is provided inside the processing chamber, the uniformly distributed pipe group comprises an air intake uniformly distributed pipe, an air outlet uniformly distributed pipe and a plurality of circulation uniformly distributed pipes, the plurality of ash hoppers are connected to each other through the plurality of circulation uniformly distributed pipes, the ash hoppers at both ends are respectively connected with the air intake uniformly distributed pipe and the air outlet uniformly distributed pipe, the ends of the air intake uniformly distributed pipe and the air outlet uniformly distributed pipe are respectively connected to the inlet flue and the outlet flue, and a water-cooling heat dissipation assembly matched with the uniformly distributed pipe group is provided at the bottom of the side of the supporting frame.

[0006] Furthermore, the flow guiding and ash blocking assembly comprises flow guiding blocks fixed on both sides of the ash hopper, the top of the flow guiding block is provided with an arcuate flow guiding groove, and the bottom of the flow guiding block is provided with an inclined return blocking groove.

[0007] Furthermore, the water-cooled heat dissipation component includes a water tank fixed to one side of the bottom of the support frame, and a return water chamber and a water storage chamber are provided inside the water tank. The return water chamber is located above the water storage chamber, and the bottom of the return water chamber is connected to a refrigeration chamber. One side of the bottom of the refrigeration chamber is connected to the water storage chamber through a connecting hole, and a plurality of refrigeration plates are provided inside the refrigeration chamber.

[0008] Furthermore, a water pump is provided at the bottom of the water storage chamber, and a water outlet pipe is provided at the side output end of the water pump. The end of the water outlet pipe passes through the outside of the water storage tank and is connected with a water supply transverse pipe. The water supply transverse pipe is connected with a water supply vertical pipe. The top of the water supply vertical pipe is connected to the water supply main pipe. A plurality of water supply branch pipes are provided on the side of the water supply main pipe. The ends of the water supply branch pipes pass through the interior of the processing chamber and are connected to the nozzle. The inner bottom of the processing chamber is connected to the return water chamber through a plurality of return water pipes.

[0009] Furthermore, the heat exchange end of the refrigeration plate is connected to a heat conducting plate, and the heat conducting plate penetrates to the outside of the water storage tank.

[0010] Furthermore, a connecting hole cooperating with the evenly distributed pipe group is provided on the ash hopper, a solenoid valve is provided at the connection point between the return water chamber and the refrigeration chamber and in the connecting hole, and a temperature sensor is provided inside the refrigeration chamber.

[0011] Furthermore, the ash unloading device comprises a manual gate valve and a star-shaped unloader, and the manual gate valve and the star-shaped unloader are arranged on the ash hopper.

[0012] Furthermore, it also includes an axial flow fan and a spray device arranged on the side of the support frame, and a conveying channel matching the output ends of the axial flow fan and the spray device is provided on the outer surface of the support frame, and the conveying channel is connected to the processing chamber.

[0013] Beneficial effects of the utility model:

[0014] The integrated device provided by the utility model enables the high-temperature flue gas to fully exchange heat with the external environment when passing through, so that the temperature of the flue gas subsequently entering the bag dust collector meets the temperature resistance requirement of the bags, ensuring the safe and stable operation of the bag dust collector. The flue gas carrying unburned materials slows down during the circulation of the flue gas in the device, and the smoke and unburned materials continuously collide with the uniformly distributed pipe wall panels. The smoke and unburned materials fall into the ash hopper under the action of gravity. Through CFD flow field simulation, the capture rate of unburned materials by the device can reach %, and the pre-dust removal efficiency can reach %-%.

[0015] The integrated device provided by the utility model is designed near the smoke collection port. Since the smoke moves vertically in the uniformly distributed pipe row and the smoke flow rate is very slow, it is more conducive to the rapid sedimentation of dust in the smoke, so that the dust and smoke are separated and the dust content of the smoke is reduced. The smoke after pre-dust removal has high density and easy-to-deposit dust that has been captured, and the dust carried in the smoke is not easy to deposit. In addition, the smoke flow rate in the rear-end flue is accelerated, which greatly alleviates the problem of dust removal flue blockage in the steel industry.

[0016] The utility model is designed with a flow-guiding and ash-blocking component, so that after the high-temperature flue gas enters the ash hopper, the flow of the high-temperature flue gas will not affect the dust already accumulated in the ash hopper, thereby preventing more flue gas from being generated. At the same time, the arc-surface guide groove can help guide the flow of the high-temperature flue gas, making it easier for the flue gas to enter the evenly distributed pipe group.

[0017] The utility model adopts the design of the water-cooled heat dissipation component. When the auxiliary equipment is started and the temperature of the uniformly distributed pipe group is still very high, the water-cooled heat dissipation component is started. The water pump in the water-cooled heat dissipation component transports low-temperature softened water through the water outlet pipe, the water delivery horizontal pipe, the water delivery vertical pipe, the water delivery main pipe and the water delivery branch pipe to a plurality of nozzles. The nozzles transport the low-temperature softened water to the outer surface of the uniformly distributed pipe group, thereby improving the heat exchange effect of the uniformly distributed pipe group. At the same time, the softened water after heat exchange flows back to the inside of the return water chamber through a plurality of return water pipes, and then gradually flows into the inside of the refrigeration chamber along the inclined surface at the bottom of the return water chamber. The refrigeration plate in the refrigeration chamber performs secondary cooling on the return water. When the temperature sensor in the refrigeration chamber detects that the return water has been cooled to the set temperature, the solenoid valve in the connecting hole is opened, and the low-temperature water flows into the inside of the water storage chamber, which is convenient for the water pump to perform the water delivery action. After the water is discharged from the refrigeration chamber, the return water in the return water chamber will enter the inside of the refrigeration chamber to perform the refrigeration work again, thereby ensuring that only low-temperature water is supplied to the water pump.

[0018] The utility model adopts the design of the ash discharge device, which is composed of a manual plug valve and a star-shaped discharger, and can regularly discharge the ash accumulated in the ash hopper.

[0019] The utility model is an auxiliary device composed of an axial flow fan and a spray device, so that it can be started according to actual design requirements. That is, when natural ventilation cannot meet the smoke cooling requirements, the axial flow fan can increase the air circulation on the outer surface of the uniformly distributed pipe group and improve the heat exchange efficiency. The synchronous spray device can spray softened water mist, and the mist droplets are blown by the axial flow fan to the outer surface of the uniformly distributed pipe group and evaporate quickly, so that the heat exchange efficiency is greatly improved, and softened water can prevent scaling on the surface of the uniformly distributed pipe group.

[0020] The uniformly distributed pipe group of the utility model is composed of multiple pipes connected according to a certain rule, and the bottom is connected to the ash hopper. The flue gas flows vertically in the pipe row, and the flow rate is determined according to the medium characteristics. During the vertical flow, the dust-containing flue gas collides with the pipe row wall plate, and the dust in the flue gas settles into the ash hopper due to gravity. The high-temperature flue gas in the uniformly distributed pipe group exchanges heat with the external environment during the flow, thereby realizing flue gas cooling and temperature reduction. At the same time, the uniformly distributed pipe row can select bare tubes or finned tubes according to the heat exchange requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a front view structural schematic diagram of a tube-in-tube integrated flue gas cooling and dust removal device of the utility model;

[0023] Figure 2 It is a schematic diagram of the top view of a tube-in-tube integrated flue gas cooling and dust removal device of the utility model;

[0024] Figure 3 This is a schematic diagram of the ash hopper structure of a tube-type flue gas cooling and dust removal integrated device of the utility model;

[0025] Figure 4 This is a schematic diagram of the water cooling heat dissipation component structure of a tube-type flue gas cooling and dust removal integrated device of the utility model. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the water cooling heat dissipation component structure of a tube-type flue gas cooling and dust removal integrated device of the utility model. Figure 2 .

[0027] In the figure, 1. support frame; 2. ash hopper; 3. ash unloading device; 4. connecting hole; 5. guide block; 6. arc guide groove; 7. air intake uniform distribution exhaust pipe; 8. air outlet uniform distribution exhaust pipe; 9. circulation uniform distribution exhaust pipe; 10. inlet flue; 11. outlet flue; 12. axial flow fan; 13. spray device; 14. water storage tank; 15. return water chamber; 16. water storage chamber; 17. refrigeration chamber; 18. connecting hole; 19. refrigeration plate; 20. heat conduction plate; 21. water pump; 22. water outlet pipe; 23. water supply horizontal pipe; 24. water supply vertical pipe; 25. water supply main pipe; 26. water supply branch pipe; 27. return water pipe; 28. nozzle; 29. ​​inclined anti-return groove. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 5The utility model provides a technical solution of a shell-and-tube integrated flue gas cooling and dust removal device, a shell-and-tube integrated flue gas cooling and dust removal device, comprising a supporting frame 1, a processing chamber is arranged inside the supporting frame 1, a plurality of ash hoppers 2 are arranged at the bottom of the processing chamber, a flow guiding and ash blocking component is arranged inside the ash hopper 2, an ash unloading device 3 is arranged at the bottom output end of the ash hopper 2, a uniformly distributed pipe group matched with the plurality of ash hoppers 2 is arranged inside the processing chamber, the uniformly distributed pipe group comprises an air intake uniformly distributed pipe 7, an air outlet uniformly distributed pipe 8 and a plurality of circulation uniformly distributed pipes 9, the plurality of ash hoppers 2 are connected to each other through the plurality of circulation uniformly distributed pipes 9, the ash hoppers 2 at both ends are respectively connected with the air intake uniformly distributed pipe 7 and the air outlet uniformly distributed pipe 8, the ends of the air intake uniformly distributed pipe 7 and the air outlet uniformly distributed pipe 8 are respectively connected to the inlet flue 10 and the outlet flue 11, and the side bottom of the supporting frame 1 is provided with a water-cooling heat dissipation component matched with the uniformly distributed pipe group.

[0030] See also Figure 3 The flow-guiding and ash-blocking assembly includes a flow-guiding block 5 fixed on both sides of the ash hopper 2, a curved flow-guiding groove 6 is provided on the top of the flow-guiding block 5, and a sloped return-blocking groove 29 is provided on the bottom of the flow-guiding and ash-blocking assembly; through the design of the flow-guiding and ash-blocking assembly, after the high-temperature flue gas enters the ash hopper 2, the flow of the high-temperature flue gas will not affect the dust already accumulated in the ash hopper 2, and thus will not generate more flue gas; at the same time, the curved flow-guiding groove 6 can help guide the high-temperature flue gas to flow, making it convenient for the flue gas to enter the evenly distributed pipe group.

[0031] See also Figure 4 and Figure 5The water-cooling heat dissipation component includes a water storage tank 14 fixed to one side of the bottom of the support frame 1, and a water return chamber 15 and a water storage chamber 16 are arranged inside the water storage tank 14. The water return chamber 15 is located above the water storage chamber 16, and the bottom of the water return chamber 15 is connected with a refrigeration chamber 17. One side of the bottom of the refrigeration chamber 17 is connected with the water storage chamber 16 through a connecting hole 18. A plurality of refrigeration plates 19 are arranged inside the refrigeration chamber 17. A water pump 21 is arranged at the bottom of the water storage chamber 16, and a water outlet pipe 22 is arranged at the side output end of the water pump 21. The end of the water outlet pipe 22 passes through the outer The side of the refrigeration plate 19 is connected to the water delivery horizontal pipe 23, and the water delivery horizontal pipe 23 is connected to the water delivery vertical pipe 24. The top of the water delivery vertical pipe 24 is connected to the water delivery main pipe 25. The side of the water delivery main pipe 25 is provided with a plurality of water delivery branch pipes 26. The end of the water delivery branch pipe 26 passes through the inside of the processing chamber and is connected to the nozzle 28. The inner bottom of the processing chamber is connected to the return water chamber 15 through a plurality of return water pipes 27. The heat exchange end of the refrigeration plate 19 is connected to the heat conduction plate 20, and the heat conduction plate 20 passes through the outside of the water storage tank 14. The ash hopper 2 is provided with a connection hole 4 that matches the uniformly distributed pipe group. Solenoid valves are provided at the connection point between the return water chamber 15 and the refrigeration chamber 17 and in the connecting hole 18, and a temperature sensor is provided inside the refrigeration chamber 17; through the design of the water-cooling heat dissipation component, when the auxiliary equipment is started and the temperature of the uniformly distributed pipe group is still very high, at this time, the water-cooling heat dissipation component is started, and the water pump 21 in the water-cooling heat dissipation component conveys low-temperature softened water to a plurality of nozzles 28 through the water outlet pipe 22, the water delivery horizontal pipe 23, the water delivery vertical pipe 24, the water delivery main pipe 25 and the water delivery branch pipe 26. The nozzle 28 conveys the low-temperature softened water to the outer surface of the uniformly distributed pipe group, thereby improving the heat exchange effect of the uniformly distributed pipe group, and at the same time The softened water flows back to the return water chamber 15 through a plurality of return water pipes 27, and then gradually flows into the refrigeration chamber 17 along the inclined surface at the bottom of the return water chamber 15. The refrigeration plate 19 in the refrigeration chamber 17 performs secondary refrigeration on the return water. When the temperature sensor in the refrigeration chamber 17 detects that the return water has been cooled to the set temperature, the solenoid valve in the connecting hole 18 opens, and the low-temperature water flows into the water storage chamber 16, which facilitates the water pump 21 to perform the water delivery action. After the refrigeration chamber 17 discharges water, the return water in the return water chamber 15 will enter the refrigeration chamber 17 to perform refrigeration again, thereby ensuring that only low-temperature water is supplied to the water pump 21.

[0032] See also Figure 1 The ash unloading device 3 includes a manual gate valve and a star-shaped discharger, and the manual gate valve and the star-shaped discharger are arranged on the ash hopper 2; through the design of the ash unloading device 3, which is composed of a manual gate valve and a star-shaped discharger, the ash accumulated in the ash hopper 2 can be emptied regularly.

[0033] See also Figure 1-Figure 2, also includes an axial flow fan 12 and a spray device 13 arranged on the side of the support frame 1, and a conveying channel matched with the output ends of the axial flow fan 12 and the spray device 13 is provided on the outer surface of the support frame 1, and the conveying channel is connected with the processing chamber; the auxiliary equipment composed of the axial flow fan 12 and the spray device 13 can be started according to actual design requirements, that is, when natural ventilation cannot meet the flue gas cooling requirements, the axial flow fan 12 can increase the air circulation on the outer surface of the uniformly distributed pipe group and improve the heat exchange efficiency. The synchronous spray device can spray softened water mist, and the droplets are blown by the axial flow fan 12 to the outer surface of the uniformly distributed pipe group and evaporate rapidly, so that the heat exchange efficiency is greatly improved, and softened water can prevent scaling on the surface of the uniformly distributed pipe row.

[0034] When in use, high-temperature flue gas can enter the uniformly distributed pipe group through the inlet flue 10. At the same time, the high-temperature flue gas will flow in the uniformly distributed pipe group. During the flow, the flow rate is determined according to the medium characteristics. During the vertical flow, the dust-containing flue gas collides with the pipe row wall plate. Under the action of gravity, the dust in the flue gas settles into the ash hopper 2. The ash can be discharged regularly through the ash unloading device 3. In addition, the high-temperature flue gas in the uniformly distributed pipe group exchanges heat with the external environment during the flow, thereby realizing the cooling of the flue gas.

[0035] During the above operation, the auxiliary equipment composed of the axial flow fan 12 and the spray device 13 can perform preliminary cooling treatment on the uniformly distributed pipe group, and can be started according to the actual design requirements, that is, when natural ventilation cannot meet the flue gas cooling requirements, the axial flow fan 12 can increase the air circulation on the outer surface of the uniformly distributed pipe group to improve the heat exchange efficiency, and the synchronous spray device 13 can spray softened water mist, and the mist droplets are blown by the axial flow fan 12 to the outer surface of the uniformly distributed pipe group and evaporate quickly, so that the heat exchange efficiency is greatly improved, and the softened water can prevent scaling on the surface of the uniformly distributed pipe group;

[0036] After the auxiliary equipment is started, if the temperature of the uniformly distributed pipe group is still very high, the water cooling and heat dissipation component is started. The water pump 21 in the water cooling and heat dissipation component delivers low-temperature softened water to a plurality of nozzles 28 through the water outlet pipe 22, the water delivery horizontal pipe 23, the water delivery vertical pipe 24, the water delivery main pipe 25 and the water delivery branch pipe 26. The nozzles 28 deliver the low-temperature softened water to the outer surface of the uniformly distributed pipe group to improve the heat exchange effect of the uniformly distributed pipe group. At the same time, the softened water after heat exchange flows back to the inside of the return water chamber 15 through a plurality of return water pipes 27, and then flows along the return water. The inclined surface at the bottom of the cavity 15 gradually flows into the refrigeration cavity 17, and the refrigeration plate 19 in the refrigeration cavity 17 performs secondary cooling on the return water. When the temperature sensor in the refrigeration cavity 17 detects that the return water has been cooled to the set temperature, the solenoid valve in the connecting hole 18 opens, and the low-temperature water flows into the water storage cavity 16, which facilitates the water pump 21 to perform water delivery. After the refrigeration cavity 17 discharges water, the return water in the return water cavity 15 will enter the refrigeration cavity 17 to perform cooling again, thereby ensuring that only low-temperature water is supplied to the water pump 21.

[0037] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tube-in-tube integrated flue gas cooling and dust removal device, characterized in that: The invention comprises a support frame (1), wherein a processing chamber is provided inside the support frame (1), wherein a plurality of ash hoppers (2) are provided at the bottom of the processing chamber, wherein a flow guiding and ash blocking component is provided inside the ash hopper (2), and an ash unloading device (3) is provided at the bottom output end of the ash hopper (2), wherein a uniformly distributed pipe group matching with the plurality of ash hoppers (2) is provided inside the processing chamber, wherein the uniformly distributed pipe group comprises an air intake uniformly distributed pipe (7), an air outlet uniformly distributed pipe (8) and a plurality of circulation uniformly distributed pipes (9) , a plurality of the ash hoppers (2) are connected to each other through a plurality of the circulation uniformly distributed pipes (9), and the ash hoppers (2) at both ends are respectively connected with the air inlet uniformly distributed pipes (7) and the air outlet uniformly distributed pipes (8), and the ends of the air inlet uniformly distributed pipes (7) and the air outlet uniformly distributed pipes (8) are respectively connected to the inlet flue (10) and the outlet flue (11), and the bottom of the side of the support frame (1) is provided with a water-cooling heat dissipation component that matches the uniformly distributed pipe group.

2. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 1, characterized in that: The flow guide and ash blocking assembly comprises flow guide blocks (5) fixed on both sides of the inside of the ash hopper (2), the top of the flow guide block (5) is provided with an arcuate flow guide groove (6), and the bottom of the flow guide block (5) is provided with an inclined return blocking groove (29).

3. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 2, characterized in that: The water-cooling heat dissipation component comprises a water storage tank (14) fixed to one side of the bottom of the support frame (1); a water return chamber (15) and a water storage chamber (16) are provided inside the water storage tank (14); the water return chamber (15) is located above the water storage chamber (16); the bottom of the water return chamber (15) is connected to a refrigeration chamber (17); one side of the bottom of the refrigeration chamber (17) is connected to the water storage chamber (16) through a connecting hole (18); and a plurality of refrigeration plates (19) are provided inside the refrigeration chamber (17).

4. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 3 is characterized in that: A water pump (21) is provided at the bottom of the water storage chamber (16); a water outlet pipe (22) is provided at the side output end of the water pump (21); the end of the water outlet pipe (22) penetrates to the outside of the water storage tank (14) and is connected to a water delivery transverse pipe (23); a water delivery vertical pipe (24) is connected to the water delivery transverse pipe (23); the top of the water delivery vertical pipe (24) is connected to a water delivery main pipe (25); a plurality of water delivery branch pipes (26) are provided on the side of the water delivery main pipe (25); the ends of the water delivery branch pipes (26) penetrate to the inside of the processing chamber and are connected to a nozzle (28); the inner bottom of the processing chamber is connected to the return water chamber (15) via a plurality of return water pipes (27).

5. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 4, characterized in that: The heat exchange end of the refrigeration plate (19) is connected to a heat conducting plate (20), and the heat conducting plate (20) penetrates to the outside of the water storage tank (14).

6. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 5, characterized in that: The ash hopper (2) is provided with a connection hole (4) matched with the evenly distributed pipe group, the connection point between the return water chamber (15) and the refrigeration chamber (17) and the connecting hole (18) are both provided with solenoid valves, and a temperature sensor is provided inside the refrigeration chamber (17).

7. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 6, characterized in that: The ash unloading device (3) comprises a manual gate valve and a star-shaped unloader, and the manual gate valve and the star-shaped unloader are arranged on the ash hopper (2).

8. The integrated tube-in-tube flue gas cooling and dust removal device according to claim 7, characterized in that: It also includes an axial flow fan (12) and a spray device (13) arranged on the side of the support frame (1); a conveying channel that cooperates with the output ends of the axial flow fan (12) and the spray device (13) is provided on the outer surface of the support frame (1); and the conveying channel is connected to the processing chamber.

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