Wet dedusting and purifying device for high-temperature flue gas

Abstract

The utility model relates to the technical field of wet dust removal, in particular to a high-temperature flue gas wet dust removal and purification device which comprises a dust removal box, an exhaust hopper and a collecting hopper are arranged at the upper end and the lower end of the dust removal box respectively, an air inlet pipe is connected to the lower end of one side of the dust removal box, a connecting plate is installed at the lower end in the dust removal box, and a conveying pipe is connected to the upper end of the connecting plate. And a plurality of first cooling fins and second cooling fins are arranged at the lower end of the connecting plate and in the conveying pipe correspondingly, a spraying assembly is installed at the upper end in the dust removal box, the lower end of the collecting hopper is connected with a collecting box, and a backflow assembly is installed on one side of the collecting box. The flue gas heat exchanger has the advantages that heat of high-temperature flue gas is absorbed through cooperation of the connecting plate, the conveying pipe, the first cooling fins and the second cooling fins, and heat loss is reduced; sewage is collected through the collecting box, smoke dust is settled, clear water in the collecting hopper is conveyed to the spraying assembly through the backflow assembly to be reused, and waste of water resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wet dust removal, in particular to a device for wet dust removal and purification of high-temperature flue gas. Background Art

[0002] In recent years, ecological environment issues have received more and more attention, which has greatly aroused discussions on environmental protection issues in all walks of life, especially the air pollution issues closely related to urban residents. Air pollution is not only related to ecological environment pollution, but also directly affects the quality of life and health of urban residents. In particular, some industries that produce high-temperature flue gas during the production process need to take good purification and dust removal measures before discharging the exhaust gas.

[0003] When wet dust removal and purification is performed on high-temperature flue gas, it is usually necessary to transport the high-temperature flue gas through a heat exchanger for heat exchange, and then transport the heat-exchanged flue gas through a spray tower for spray dust removal. However, the high-temperature flue gas still retains a relatively high temperature after heat exchange in the heat exchanger and spray dust removal in the spray tower. Direct discharge will cause a certain amount of energy loss, and a reflux mechanism is usually provided on the spray tower. The reflux mechanism usually does not separate the smoke and spray water, and directly transports the mixed water to the spray mechanism for use, which can easily reduce the efficiency of spray dust removal and easily clog the spray mechanism, thereby reducing the quality of spray dust removal. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the existing high-temperature flue gas wet dust removal and purification device will cause a certain amount of energy loss, and the reflux mechanism usually does not separate the smoke and the spray water, which is easy to reduce the efficiency of the spray dust removal, and is easy to clog the spray mechanism, reducing the quality of the spray dust removal.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a device for wet dust removal and purification of high-temperature flue gas, comprising a dust removal box, wherein an exhaust hopper and a collecting hopper are respectively provided at the upper and lower ends of the dust removal box, an air intake pipe is sealed and plugged at a lower position on one side of the dust removal box, a connecting plate is installed at a lower position in the dust removal box, a plurality of conveying pipes are connected through the upper end of the connecting plate, a plurality of heat sinks 1 and 2 are respectively provided at the lower end of the connecting plate and inside the conveying pipe, a spray assembly corresponding to the upper end of the conveying pipe is installed at an upper position in the dust removal box, a collecting box is connected to the lower end of the collecting hopper, and a reflux assembly connected to the collecting hopper and the spray assembly is installed on one side of the collecting box.

[0008] Furthermore, the connecting plate and the delivery pipe are both made of metal, the connecting plate is sealed on all sides and is provided with a number of air inlet holes arranged in an equidistant array and corresponding to the delivery pipe, and the heat sink is equidistantly arranged between two adjacent rows of air inlet holes.

[0009] Furthermore, the spray assembly includes a sealed water inlet pipe passing through the side wall of the dust removal box, one end of the water inlet pipe is connected to a horizontal pipe located in the dust removal box, a plurality of branch pipes 1 are provided on the horizontal pipe, a plurality of branch pipes 2 corresponding to the upper end of the delivery pipe are provided at a lower end of the branch pipe, and a spray head is installed at the end of the branch pipe 2.

[0010] Furthermore, a support column 1 connected to the upper end of the collecting box is provided at the four outer corners of the collecting bucket, a collecting bucket 2 is provided at the lower end of the collecting box, a sewage pipe is connected to the lower end of the collecting bucket 2, an electric control valve is provided on the sewage pipe, and support columns 2 are provided at the four outer corners of the collecting bucket 2.

[0011] Furthermore, the reflux assembly includes a reflux pipe connected to one side of the collecting bucket, a water pump connected to the reflux pipe is installed on the side wall of the collecting box, and a branch pipe three connected to the end of the reflux pipe is provided at the lower end of the water inlet pipe.

[0012] 3. Beneficial Effects

[0013] The advantages of the utility model compared with the prior art are:

[0014] 1. The high-temperature flue gas enters the conveying pipe through the air inlet, and then is sprayed by the corresponding spray assembly at the upper end of the conveying pipe, which improves the efficiency and quality of high-temperature flue gas spray dust removal.

[0015] 2. Through the cooperation of metal connecting plates, conveying pipes and several heat sinks 1 and 2, the heat of high-temperature flue gas is absorbed and taken away by spraying water to reduce heat loss.

[0016] 3. The spray water mixed with smoke is collected by the collection bucket and transported to the collection box. The smoke settles in the collection box, and the collection bucket contains relatively clear water, which can be transported to the spray component through the reflux component for reuse, thus reducing the cost of use and the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall cross-sectional structural diagram of the utility model.

[0018] Figure 2 It is the internal structure diagram of the conveying pipe of the utility model.

[0019] Figure 3 It is a structural diagram of the spray assembly of the utility model.

[0020] Figure 4It is the overall structure diagram of the utility model.

[0021] As shown in the figure: 1. Dust removal box; 2. Exhaust hopper; 3. Collecting hopper; 4. Connecting plate; 401, air inlet; 5. Delivery pipe; 6. Heat sink one; 7. Heat sink two; 8. Air inlet pipe; 9. Spray assembly; 10. Collecting box; 11. Reflux assembly; 12. Water inlet pipe; 13. Horizontal pipe; 14. Branch pipe one; 1401, branch pipe two; 15. Spray head; 16. Support column one; 17. Collecting hopper two; 18. Drain pipe; 19. Electric control valve; 20. Support column two; 21. Reflux pipe; 22. Water pump; 23. Branch pipe three. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Embodiment 1

[0024] Combined with Figure 1 A device for wet dust removal and purification of high-temperature flue gas comprises a dust removal box 1, wherein an exhaust hopper 2 and a collecting hopper 3 are respectively arranged at the upper and lower ends of the dust removal box 1, an air intake pipe 8 is sealed and plugged at the lower position of one side of the dust removal box 1, a connecting plate 4 is installed at the lower position of the dust removal box 1, and a plurality of conveying pipes 5 are connected through the upper end of the connecting plate 4, a spray assembly 9 corresponding to the upper end of the conveying pipe 5 is installed at the upper position of the dust removal box 1, a collecting box 10 is connected to the lower end of the collecting hopper 3, and a reflux assembly 11 connected to the collecting hopper 3 and the spray assembly 9 is installed on one side of the collecting box 10.

[0025] In combination with the above structure, the high-temperature flue gas after heat exchange in the heat exchanger enters the dust removal box 1 through the air inlet pipe 8 for spray dust removal.

[0026] Combined with Figure 2 A plurality of heat sinks 6 and 7 are respectively disposed at the lower end of the connecting plate 4 and inside the conveying pipe 5. The connecting plate 4 and the conveying pipe 5 are both made of metal. The connecting plate 4 is sealed on all sides and is provided with a plurality of air inlet holes 401 arranged in an equidistant array and corresponding to the conveying pipe 5. The heat sink 6 is equidistantly disposed between two adjacent rows of air inlet holes 401.

[0027] Combined with the above structure, the high-temperature flue gas enters the delivery pipe 5 through the air inlet 401, and is then sprayed through the corresponding spray assembly 9 at the upper end of the delivery pipe 5, thereby improving the efficiency and quality of high-temperature flue gas spray dust removal. In addition, the metal connecting plate 4, the delivery pipe 5 and a plurality of heat sinks 1 6 and 2 7 cooperate to absorb the heat of the high-temperature flue gas and take it away through spraying water, thereby reducing heat loss.

[0028] Combined with Figure 3 The spray assembly 9 includes a water inlet pipe 12 that is sealed and passes through the side wall of the dust removal box 1. One end of the water inlet pipe 12 is connected to a horizontal pipe 13 located in the dust removal box 1. The horizontal pipe 13 is provided with a plurality of branch pipes 14. The lower end of the branch pipe 14 is provided with a plurality of branch pipes 2 1401 corresponding to the upper end of the conveying pipe 5. A spray head 15 is installed at the end of the branch pipe 2 1401.

[0029] In combination with the above structure, the water inlet pipe 12 is connected to the external water supply system, and spray water is sprayed through a plurality of spray heads 15 corresponding to the upper end of the delivery pipe 5, thereby improving the efficiency and quality of high-temperature flue gas spray dust removal.

[0030] Embodiment 2

[0031] Based on the first embodiment, combined with the attached Figure 4 The collecting bucket 3 is provided with supporting columns 16 connected to the upper end of the collecting box 10 at the four outer corners, the collecting box 10 is provided with a collecting bucket 17 at the lower end, the lower end of the collecting bucket 17 is connected to a sewage pipe 18, the sewage pipe 18 is provided with an electric control valve 19, and the collecting bucket 17 is provided with supporting columns 20 at the four outer corners.

[0032] Combined with the above structure, the spray water mixed with smoke is collected by the collecting hopper 3 and transported to the collecting box 10. The smoke settles in the collecting box 10, and the collecting hopper 3 contains relatively clear water, which can be transported to the spraying component 9 through the reflux component 11 for reuse, thereby reducing the cost of use and reducing the waste of water resources.

[0033] Combined with Figure 4 The reflux assembly 11 includes a reflux pipe 21 connected to one side of the collecting bucket 3, a water pump 22 connected to the reflux pipe 21 is installed on the side wall of the collecting box 10, and a branch pipe 23 connected to the end of the reflux pipe 21 is provided at the lower end of the water inlet pipe 12.

[0034] In combination with the above structure, when the reflux component 11 is used, the water pump 22 is started to extract the water in the collection bucket 3 through the reflux pipe 21 and transport it to the spray component 9, so as to facilitate the reuse of water resources and reduce the waste of water resources.

[0035] The specific usage is as follows:

[0036] The high-temperature flue gas after heat exchange through the heat exchanger enters the dust removal box 1 through the air inlet pipe 8, and the high-temperature flue gas enters the delivery pipe 5 through the air inlet hole 401, and then is sprayed through the corresponding spray assembly 9 at the upper end of the delivery pipe 5, thereby improving the efficiency and quality of high-temperature flue gas spray dust removal, and through the cooperation of the metal connecting plate 4, the delivery pipe 5 and a plurality of heat sinks 1 6 and 2 7, the heat of the high-temperature flue gas is absorbed and taken away by the spray water, thereby reducing heat loss; the spray water mixed with the smoke is collected by the collecting bucket 3 and transported to the collecting box 10, and the smoke settles in the collecting box 10, and the collecting bucket 3 contains relatively clear water, which can be transported to the spray assembly 9 through the reflux assembly 11 for repeated use, thereby reducing the use cost and reducing the waste of water resources.

[0037] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A device for wet dust removal and purification of high-temperature flue gas, comprising a dust removal box (1), wherein the upper and lower ends of the dust removal box (1) are respectively provided with an exhaust hopper (2) and a collection hopper (3), and an air intake pipe (8) is sealed and plugged at a lower position on one side of the dust removal box (1), characterized in that: A connecting plate (4) is installed at a lower position in the dust removal box (1); a plurality of conveying pipes (5) are connected through the upper end of the connecting plate (4); a plurality of heat sinks (1) (6) and heat sinks (2) (7) are respectively provided at the lower end of the connecting plate (4) and inside the conveying pipes (5); a spray assembly (9) corresponding to the upper end of the conveying pipes (5) is installed at an upper position in the dust removal box (1); a collecting box (10) is connected to the lower end of the collecting hopper (3); and a reflux assembly (11) connected to the collecting hopper (3) and the spray assembly (9) is installed on one side of the collecting box (10).

2. The device for wet dust removal and purification of high-temperature flue gas according to claim 1, characterized in that: The connecting plate (4) and the delivery pipe (5) are both made of metal. The connecting plate (4) is sealed on all sides and is provided with a plurality of air inlet holes (401) arranged in an equidistant array and corresponding to the delivery pipe (5). The heat sink 1 (6) is equidistantly arranged between two adjacent rows of air inlet holes (401).

3. The device for wet dust removal and purification of high-temperature flue gas according to claim 1, characterized in that: The spray assembly (9) comprises a water inlet pipe (12) which is sealed and passes through the side wall of the dust removal box (1); one end of the water inlet pipe (12) is connected to a transverse pipe (13) located in the dust removal box (1); a plurality of branch pipes (14) are arranged on the transverse pipe (13); a plurality of branch pipes (14) corresponding to the upper end of the delivery pipe (5) are arranged at the lower end of the branch pipe (14); a spray head (15) is installed at the end of the branch pipe (1401).

4. The device for wet dust removal and purification of high-temperature flue gas according to claim 1, characterized in that: The collecting bucket (3) is provided with a first support column (16) connected to the upper end of the collecting box (10) at the four outer corners, the collecting box (10) is provided with a second collecting bucket (17) at the lower end, the lower end of the second collecting bucket (17) is connected to a sewage pipe (18), the sewage pipe (18) is provided with an electric control valve (19), and the four outer corners of the second collecting bucket (17) are provided with second support columns (20).

5. The device for wet dust removal and purification of high-temperature flue gas according to claim 3 is characterized in that: The reflux assembly (11) comprises a reflux pipe (21) connected to one side of the collecting hopper (3); a water pump (22) connected to the reflux pipe (21) is installed on the side wall of the collecting box (10); and a branch pipe (23) connected to the end of the reflux pipe (21) is provided at the lower end of the water inlet pipe (12).

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