Flue gas cooling device

Abstract

The utility model discloses a flue gas cooling device. The flue gas cooling device comprises a flue gas cooling tank body, a flue gas access pipe, a flue gas exhaust pipe, a filtering device, a cooling water spraying device and a precipitation water supply device, the smoke inlet pipe is arranged on one side of the lower section of the smoke cooling tank body, the smoke exhaust pipe is arranged at the upper end of the smoke cooling tank body, the filtering device is arranged on the upper section in the smoke cooling tank body, the cooling water spraying device is arranged above the filtering device, and a water outlet of the smoke cooling tank body is connected with the precipitation water supply device. The precipitation water supply device is connected with the cooling water spraying device. The flue gas cooling device disclosed by the utility model has the advantages of efficient cooling, good dust removal effect, cyclic utilization of water resources, simple structure, convenience in maintenance and the like, and can effectively reduce the flue gas temperature, remove particulate matters in the flue gas, improve the purification quality of the flue gas and simultaneously reduce the production cost of an enterprise.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment equipment, especially a flue gas cooling device. BACKGROUND

[0002] In the industrial production process, many equipment and processes will produce a large amount of high-temperature flue gas. These flue gases not only have high temperature, but also may contain various harmful substances and particulate matters, such as dust, heavy metals, acid gases, etc. If not treated directly discharged, it will cause serious pollution to the environment, endanger human health. Therefore, cooling and purification treatment of flue gas is an important issue in the field of industrial environmental protection.

[0003] The traditional flue gas cooling method mainly includes natural cooling, air cooling and water cooling, etc. The natural cooling efficiency is low, and the cooling speed is slow, which is difficult to meet the needs of industrial production; the air cooling has a faster cooling speed, but needs a large number of fan equipment, and has a high energy consumption, and the removal effect of particulate matters in the flue gas is limited; the water cooling is a relatively effective cooling method, but the traditional water cooling device has some problems, such as low recycling efficiency of cooling water, easy to cause waste of water resources, and poor spraying effect of cooling water, resulting in uneven flue gas cooling, and part of the flue gas has too high temperature, which affects the subsequent purification treatment effect. In addition, the traditional flue gas cooling device also has an unsatisfactory removal effect of particulate matters in the flue gas, and cannot well meet the environmental protection requirements. SUMMARY

[0004] The utility model aims at providing a flue gas cooling device.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented according to the following technical scheme:

[0006] The utility model discloses a flue gas cooling tank body, flue gas access pipe, exhaust pipe, filter device, cooling water spraying device and precipitation water supply device, the flue gas access pipe is arranged at the lower section side of the flue gas cooling tank body, the exhaust pipe is arranged at the upper end of the flue gas cooling tank body, the filter device is arranged in the upper section in the flue gas cooling tank body, the cooling water spraying device is arranged in the flue gas cooling tank body and is located above the filter device, the drain of the flue gas cooling tank body is connected with the precipitation water supply device, and the precipitation water supply device is connected with the cooling water spraying device.

[0007] Further, the filter device includes a filter screen fixing ring and a filter screen, an inner wall of the flue gas cooling tank body is provided with a tank inner flange, the filter screen is fixedly arranged at the middle part of the filter screen fixing ring, the filter screen fixing ring is placed on the tank inner flange, and the cooling water spraying device is arranged above the filter screen.

[0008] Preferably, the filter screen is in a conical structure, the tip of the conical filter screen points downward, the tip of the filter screen is provided with a blowdown port, and the cooling water spraying device is arranged above the middle part of the filter screen.

[0009] Specifically, the cooling water spraying device comprises a nozzle connecting flange, a nozzle connecting ring, nozzles, and a nozzle bottom cover, the upper end of the nozzle connecting flange is connected with the water outlet end of the precipitation water supply device, the lower end of the nozzle connecting flange is rotationally connected with the upper end of the nozzle connecting ring, the nozzle bottom cover is detachably fixedly connected with the lower end of the nozzle connecting ring, the nozzles are multiple, the multiple nozzles are in communication with the outer wall of the nozzle connecting ring, and each nozzle is arranged to be inclined along the same direction of the outer wall of the nozzle connecting ring.

[0010] The precipitation water supply device comprises an inlet pipe, a water pump, a precipitation tank, and a precipitation tank connecting pipe, the bottom side of the flue gas cooling tank body is in communication with the lower section of the precipitation tank through the precipitation tank connecting pipe, the water pump is located at the middle section in the precipitation tank, and the water outlet of the water pump is connected with the upper end of the nozzle connecting flange through the inlet pipe.

[0011] The flue gas cooling device has the advantages that:

[0012] Compared with the prior art, the flue gas cooling device has the following technical effects:

[0013] Efficient cooling: the flue gas cooling device sprays and cools flue gas through the cooling water spraying device, the nozzles of the cooling water spraying device are arranged to be inclined along the same direction, the nozzle connecting ring is rotationally connected with the nozzle connecting flange, the nozzles can rotate continuously when spraying water, uniform washing of the filter screen is realized, the filter screen can be uniformly infiltrated with water, the cooling effect of flue gas is improved, the temperature of high-temperature flue gas can be quickly reduced to a suitable range, and the requirement of subsequent purification treatment is met.

[0014] Good dust removal effect: the filter screen adopts a conical structure, the tip points downward, and the tip is provided with a blowdown port. When flue gas passes through the filter screen, the filter screen can effectively intercept and filter particulate matters in the flue gas, and water flow continuously infiltrates the filter screen, further enhancing the removal effect of particulate matters. After the flue gas is filtered by the filter screen, the content of particulate matters is greatly reduced, the pollution to the environment is reduced, and the purification quality of flue gas is improved.

[0015] Water resource recycling: the design of the precipitation water supply device realizes recycling of cooling water. Water in the lower section of the flue gas cooling tank body enters the precipitation tank through the precipitation tank connecting pipe to be precipitated, the upper section of the precipitated water is pumped by the water pump and is injected into the cooling water spraying device again to be sprayed and cooled, thereby forming a circulating water system. In this way, the utilization efficiency of water resources is improved, the waste of water resources is reduced, and the production cost of enterprises is reduced.

[0016] Simple structure, convenient maintenance: the whole device structure design is reasonable, the connection between the parts is simple and reliable. The filter screen is fixed on the filter screen fixing ring, the filter screen fixing ring is placed on the flange in the tank body, which is convenient for the installation and replacement of the filter screen. The nozzle connecting ring of the cooling water spraying device is rotatably connected with the nozzle connecting flange, and the nozzle bottom cover is detachably and fixedly connected with the nozzle connecting ring, so that the maintenance and replacement of the nozzle are also relatively convenient. The water pump in the sediment water supply device is located in the sediment pool, which is convenient for the maintenance and maintenance of the water pump. This structure design makes the whole device more stable and reliable during operation, and reduces the maintenance cost and difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional structure schematic view of the utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in the figure;

[0019] Figure 3 is a nozzle part structure schematic view of the utility model;

[0020] Figure 4 is a whole external structure schematic view of the utility model.

[0021] In the figure: flue gas cooling tank body 1, flue gas access pipe 2, exhaust pipe 3, flange in tank body 4, filter screen fixing ring 5, filter screen 6, nozzle connecting flange 7, nozzle connecting ring 8, nozzle 9, nozzle bottom cover 10, water inlet pipe 11, water pump 12, sediment pool 13, sediment pool connecting pipe 14. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings and specific embodiments, the illustrative embodiment of the utility model and the description are used to explain the utility model, but not as the limitation of the utility model.

[0023] As Figures 1-4 shown: the utility model discloses a flue gas cooling tank body 1, flue gas access pipe 2, exhaust pipe 3, filter device, cooling water spraying device and sediment water supply device, the flue gas access pipe 2 is set up in the lower section one side of the flue gas cooling tank body 1, the exhaust pipe 3 is set up in the upper end of the flue gas cooling tank body 1, the filter device is set up in the upper section in the flue gas cooling tank body 1, the cooling water spraying device is set up in the flue gas cooling tank body 1, and is located above the filter device, the drain of the flue gas cooling tank body 1 is connected with sediment water supply device, and the sediment water supply device is connected with the cooling water spraying device.

[0024] Further, the filtering device comprises a filter screen fixing ring 5 and a filter screen 6, an inner wall of the flue gas cooling tank body 1 is provided with a tank inner flange 4, the filter screen 6 is fixedly arranged at the middle part of the filter screen fixing ring 5, the filter screen fixing ring 5 is placed on the tank inner flange 4, and a cooling water spraying device is arranged above the filter screen 6.

[0025] Preferably, the filter screen 6 is a conical structure, the filter screen 6 is tapered with a tip downward, the tip of the filter screen 6 is provided with a blowdown port, and the cooling water spraying device is arranged above the middle part of the filter screen 6.

[0026] Specifically, the cooling water spraying device comprises a nozzle connecting flange 7, a nozzle connecting ring 8, a plurality of nozzles 9 and a nozzle bottom cover 10, the upper end of the nozzle connecting flange 7 is connected with a water outlet end of the precipitation water supply device, the lower end of the nozzle connecting flange 7 is rotationally connected with the upper end of the nozzle connecting ring 8, the nozzle bottom cover 10 is detachably fixedly connected with the lower end of the nozzle connecting ring 8, the plurality of nozzles 9 are in communication with the outer wall of the nozzle connecting ring 8, and each nozzle 9 is arranged in the same direction and inclined to the outer wall of the nozzle connecting ring 8.

[0027] The precipitation water supply device comprises an inlet pipe 11, a water pump 12, a precipitation tank 13 and a precipitation tank connecting pipe 14, one side of the bottom of the flue gas cooling tank body 1 and the lower section of the precipitation tank 13 are in communication through the precipitation tank connecting pipe 14, the water pump 12 is located at the middle section in the precipitation tank 13, and the water outlet of the water pump 12 is connected with the upper end of the nozzle connecting flange 7 through the inlet pipe 11.

[0028] The working principle of the utility model is as follows:

[0029] In use, the flue gas inlet pipe 2 is connected with flue gas, the flue gas enters the lower section in the flue gas cooling tank body 1, the flue gas is discharged through the filter screen 6 and the smoke exhaust pipe 3, water is sprayed above the filter screen 6, the filter screen 6 is continuously soaked by water flow, the flue gas can be cooled when passing through the filter screen 6, meanwhile, particulate matters in the flue gas can be removed, the lower end of the filter screen 6 is provided with an outlet for smoothly draining water, the outlet should not be too large to reduce the flue gas entering from the outlet of the filter screen 6, the water in the lower section of the flue gas cooling tank body 1 enters the precipitation tank 13 through the precipitation tank connecting pipe 14 to be deposited, the clear water in the upper section after deposition is extracted by the water pump 12, injected into the nozzle connecting ring 8 through the inlet pipe 11, since the nozzle connecting flange 7 and the nozzle connecting ring 8 are rotationally connected, and the nozzles 9 are arranged in the same direction and inclined, the nozzle connecting ring 8 is continuously rotated when the nozzles 9 spray water, the upper section of the filter screen 6 is uniformly washed, the filter screen 6 can be uniformly soaked, the water flow falls into the lower section in the flue gas cooling tank body 1 and then enters the precipitation tank 13 to be deposited, so that the above process is continuously repeated to cool the input flue gas and remove dust to a certain extent.

[0030] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A flue gas cooling device, characterized by: The application relates to a flue gas cooling tank body (1), a flue gas access pipe (2), a flue gas exhaust pipe (3), a filtering device, a cooling water spraying device and a sediment water supply device, wherein the flue gas access pipe (2) is arranged on one side of the lower section of the flue gas cooling tank body (1), the flue gas exhaust pipe (3) is arranged at the upper end of the flue gas cooling tank body (1), the filtering device is arranged in the upper section of the flue gas cooling tank body (1), the cooling water spraying device is arranged in the flue gas cooling tank body (1) and is located above the filtering device, the water outlet of the flue gas cooling tank body (1) is connected with the sediment water supply device, and the sediment water supply device is connected with the cooling water spraying device.

2. The flue gas cooling device according to claim 1, characterized in that: The filtering device comprises a filter screen fixing ring (5) and a filter screen (6), the inner wall of the flue gas cooling tank body (1) is provided with a tank inner flange (4), the filter screen (6) is fixedly arranged in the middle part of the filter screen fixing ring (5), the filter screen fixing ring (5) is placed on the tank inner flange (4), and the cooling water spraying device is arranged above the filter screen (6).

3. A flue gas cooling device according to claim 2, characterised in that: The filter screen (6) is in a conical structure, the tip of the filter screen (6) is downward, the tip of the filter screen (6) is provided with a blowdown port, and the cooling water spraying device is arranged above the middle part of the filter screen (6).

4. A flue gas cooling device according to claim 3, characterised in that: The cooling water spraying device comprises a nozzle connecting flange (7), a nozzle connecting ring (8), a plurality of nozzles (9) and a nozzle bottom cover (10), the upper end of the nozzle connecting flange (7) is connected with the water outlet end of the sediment water supply device, the lower end of the nozzle connecting flange (7) is rotationally connected with the upper end of the nozzle connecting ring (8), the nozzle bottom cover (10) is detachably fixedly connected with the lower end of the nozzle connecting ring (8), the plurality of nozzles (9) are in communication connection with the outer wall of the nozzle connecting ring (8), and each nozzle (9) is arranged in the same direction and is inclined to the outer wall of the nozzle connecting ring (8).

5. A flue gas cooling device according to claim 4, characterised in that: The sediment water supply device comprises a water inlet pipe (11), a water pump (12), a sediment pool (13) and a sediment pool connecting pipe (14), the bottom side of the flue gas cooling tank body (1) and the lower section of the sediment pool (13) are in communication connection through the sediment pool connecting pipe (14), the water pump (12) is located in the middle section of the sediment pool (13), and the water outlet of the water pump (12) is connected with the upper end of the nozzle connecting flange (7) through the water inlet pipe (11).

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