CN219922475U - Multistage washing device for flue gas - Google Patents

Abstract

The utility model discloses a smoke multistage washing device which comprises a first-stage washing mechanism, a second-stage washing mechanism and a water tank, wherein the first-stage washing mechanism comprises a smoke pipeline and a venturi pipeline, the smoke pipeline is communicated with the venturi pipeline through a turning pipeline, a plurality of sprayers are arranged in the smoke pipeline of the first-stage washing mechanism, a flue inlet is arranged on the smoke pipeline, the second-stage washing mechanism comprises the smoke pipeline and the venturi pipeline, a plurality of sprayers and a filler are arranged in the smoke pipeline of the second-stage washing mechanism, the top surface of the water tank is communicated with the first-stage washing mechanism and the second-stage washing mechanism, a smoke exhaust pipeline is positioned at one end far away from the first-stage washing mechanism and is communicated with the top surface of the water tank, and an overflow port and a drain port are arranged on the side surface of the water tank. The flue gas multistage washing device provided by the utility model has the advantages of good tightness, simple structure and water saving.

Description

Multistage washing device for flue gas

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to a flue gas multistage washing device.

Background

In the field of solid waste and dangerous waste treatment, incineration is a common treatment mode, a high-temperature melting technology is gradually and widely used for different materials, the two processes can generate smoke, the smoke contains a large amount of fly ash, and because of the different materials, the smoke possibly contains acid gas, partial metal chloride and sulfide and oxide of a small amount of metal, and the smoke can be discharged after reaching the standard after being subjected to high-efficiency treatment.

The high-temperature melting technology of fly ash still belongs to an emerging technology in China, the application range is not wide, the treatment mode of the molten smoke in the related technology is mainly a spray tower, but the spray device has a complex structure and has a better effect on a process with large smoke quantity, and the smoke quantity of the fly ash melting is not large, so that the method is obviously not suitable for the treatment in the above mode.

Under the background that the current force of China improves the supply capacity and the level of household garbage classification and treatment facilities in county-level areas, the technical requirements of small household garbage incineration treatment facilities are further improved. Traditional flue gas purification systems are long enough to handle a large amount of incineration flue gas, and small-sized household garbage incineration disposal processes are relatively small in flue gas amount, so that the traditional processes are not suitable.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a multi-stage flue gas washing device which has the advantages of good sealing performance, simple structure and water saving.

According to the flue gas multi-stage washing device provided by the embodiment of the utility model, the flue gas multi-stage washing device comprises a primary washing mechanism, a secondary washing mechanism and a water tank, wherein the primary washing mechanism comprises a flue gas pipeline and a venturi pipeline, the flue gas pipeline is communicated with the venturi pipeline through a turning pipeline, a plurality of sprayers are arranged in the flue gas pipeline of the primary washing mechanism, a flue inlet is arranged on the flue gas pipeline, the secondary washing mechanism comprises the flue gas pipeline and the venturi pipeline, a plurality of sprayers and fillers are arranged in the flue gas pipeline of the secondary washing mechanism, the top surface of the water tank is communicated with the primary washing mechanism and the secondary washing mechanism, the smoke exhaust pipeline is positioned at one end of the top surface of the water tank far away from the primary washing mechanism, and an overflow port and a sewage draining port are arranged on the side surface of the water tank.

The flue gas multistage washing device provided by the embodiment of the utility model has the advantages of good tightness, simple structure and water saving. The utility model integrates cooling, dedusting and deacidification, effectively reduces the temperature of the flue gas by multi-stage washing of the flue gas, collects metal compounds and secondary fly ash in the flue gas, has good matching tightness between the water tank and the pipeline, avoids smoke leakage, and saves water by recycling spray water through the water tank.

In some embodiments, the height of the pipes of the secondary washing mechanism is lower than the height of the pipes of the primary washing mechanism, and the number of sprayers of the secondary washing mechanism is less than the number of sprayers of the primary washing mechanism.

In some embodiments, a tertiary washing mechanism is also included, the height of the conduit of the tertiary washing mechanism being lower than the height of the conduit of the secondary washing mechanism.

In some embodiments, a stirring device is disposed within the water tank.

In some embodiments, a slope is provided at the bottom of the interior of the water tank, the slope being inclined toward the smoke exhaust duct.

In some embodiments, the exhaust port is located at a side of the exhaust duct, and a dehumidifier is disposed in the exhaust duct, and the dehumidifier is lower than the exhaust port.

In some embodiments, a water baffle is further disposed within the water tank, the water baffle having a bottom that is lower than the bottom of the overflow port.

In some embodiments, a plurality of the water baffles are disposed perpendicular to the direction of flow of the flue gas, the water baffles being located between the flue gas duct and the venturi duct.

In some embodiments, the venturi pipes are multiple, and a nozzle is correspondingly arranged above each venturi pipe.

In some embodiments, the tank further includes a refill port and a purge cover plate pivotally connected to the tank.

Drawings

Fig. 1 is a schematic structural view of a multi-stage flue gas washing device according to an embodiment of the present utility model.

Fig. 2 is a schematic top view of a flue gas multistage scrubbing apparatus in accordance with an embodiment of the present utility model.

Reference numerals: 1. a flue gas duct; 2. a seal; 3. a venturi tube; 4. a water tank; 5. a smoke exhaust duct; 6. an overflow port; 7. a sewage outlet; 8. a sprayer; 9. a filler; 10. a ramp; 11. and a water baffle.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

According to the flue gas multistage washing device disclosed by the embodiment of the utility model, as shown in fig. 1, the flue gas multistage washing device comprises a first-stage washing mechanism, a second-stage washing mechanism and a water tank 4, wherein the first-stage washing mechanism comprises a flue gas pipeline 1 and a venturi pipeline 3, the flue gas pipeline 1 is communicated with the venturi pipeline 3 through a sealing piece 2, the sealing piece 2 is a turning pipeline, and the turning pipeline can be removed and maintained according to actual conditions. The flue gas pipeline 1 of the primary washing mechanism is internally provided with a plurality of sprayers 8, the flue gas pipeline 1 is provided with a flue inlet, the secondary washing mechanism comprises a flue gas pipeline 1 and a venturi pipeline 3, the flue gas pipeline 1 of the secondary washing mechanism is internally provided with a plurality of sprayers 8 and a filler 9, the top surface of the water tank 4 is communicated with the primary washing mechanism and the secondary washing mechanism, the smoke exhaust pipeline 5 is positioned at one end, far away from the primary washing mechanism, of the top surface of the water tank 4, and the side surface of the water tank 4 is provided with an overflow port 6 and a sewage drain port 7. The flue inlet is arranged on the flue gas pipeline 1 of the primary washing mechanism, flue gas enters the primary washing mechanism from the flue inlet and enters the water tank 4 after being washed, the secondary washing mechanism and the primary washing mechanism are basically the same in structure, the horizontal included angle of the axis of the flue inlet can be adjusted according to actual conditions, and the cross section of the flue gas pipeline 1 can be rectangular, circular or other shapes, and the shape of the flue channel can be adjusted according to actual conditions. The turning pipeline is connected with the flue gas pipeline 1 and the Venturi pipeline 3 to complete the connection of the washing mechanism. The number of sprayers 8 arranged in the flue gas duct 1 in the primary scrubbing mechanism may be three, the height of the sprayers 8 being equal to or lower than the height of the nozzles in the venturi duct 3. The shower 8 sets up in flue gas pipeline 1 and can fully wash the flue gas, guarantees that gas-water fully contacts, and venturi pipeline 3 further guarantees through the cooperation of nozzle that gas-water fully contacts realizes the abundant washing to the flue gas, and the quantity of venturi pipeline 3 of every grade washing mechanism can be adjusted according to actual conditions, and flue gas pipeline 1, venturi pipeline 3's below all communicates with water tank 4, and the water from shower 8 and nozzle gathers in water tank 4. The overflow port 6 of the water tank 4 is used for discharging overflow liquid, and the sewage outlet 7 is used for discharging sludge. The sprayer 8 and the nozzle are connected with the water distributor to ensure the spray water pressure, and the spray water is discharged for treatment after multiple times of circulation, thereby saving water.

The flue gas multistage washing device provided by the embodiment of the utility model has the advantages of good tightness, simple structure and water saving. According to the utility model, the temperature of the smoke is effectively reduced by multistage washing of the smoke, the mobile phone, the metal compound in the smoke and the secondary fly ash are well matched with the water tank and the pipeline, the smoke leakage is avoided, and the spray water is recycled through the water tank to play a role in saving water.

In some embodiments, as shown in fig. 1, the height of the pipes of the secondary washing mechanism is lower than the height of the pipes of the primary washing mechanism, and the number of sprayers 8 of the secondary washing mechanism is less than the number of sprayers 8 of the primary washing mechanism.

Specifically, as the flue gas is subjected to primary cooling by the primary washing mechanism, the gas-liquid contact time can be shortened, the height of the secondary washing mechanism can be properly reduced, the size of the flue gas pipeline 1 and the number of the Venturi pipelines 3 can be adjusted according to actual needs, the secondary washing mechanism further washes the flue gas, the number of the sprayers 8 is reduced, the equipment investment is reduced, and meanwhile, the sprayers 8 secondarily wash the flue gas in the flue gas pipeline 1 of the secondary washing mechanism.

In some embodiments, as shown in FIG. 1, a tertiary washing mechanism is also included, with the height of the pipes of the tertiary washing mechanism being lower than the height of the pipes of the secondary washing mechanism.

Specifically, follow-up tertiary washing mechanism, level four washing mechanism can be add as required, tertiary washing mechanism and level two washing mechanism's structure are the same, and tertiary washing mechanism's pipeline height and sprayer 8 quantity further reduce, carry out the tertiary washing to the flue gas in the tertiary washing mechanism. The flue gas pipeline 1 of the three-stage washing mechanism can be provided with a filler 9 or not. The packing 9 is arranged in the flue gas pipeline 1 of the secondary washing mechanism, so that liquid can flow along the surface of the packing 9 to form a liquid film, a gas-liquid two-phase contact surface is arranged on the surface of the liquid film, the cleaning effect is improved, and the contact time is ensured.

In some embodiments, a stirring device is provided within the water tank 4.

Specifically, the stirring device is arranged in the water tank 4 to stir the waste deposited in the water tank 4, and can discharge the spray liquid and the sediment to be treated. The stirring device is convenient for cleaning the water tank, and the fly ash can be prevented from sinking when the stirring device works.

In some embodiments, as shown in fig. 1, the bottom of the interior of the water tank 4 is provided with a ramp 10, the ramp 10 being inclined towards the smoke exhaust duct 5.

Specifically, the slope 10 at the bottom of the water tank 4 can guide the sediment to settle and is convenient for flushing the fly ash at the bottom, and the water flow is driven by the stirring device to flush the sediment to move towards the sewage outlet 7, so that the sediment is convenient to be fully discharged, and the water tank 4 is ensured to be clean.

In some embodiments, as shown in fig. 1, the exhaust port is located at a side of the exhaust duct 5, and a dehumidifier is disposed in the exhaust duct 5, and the dehumidifier is lower than the exhaust port.

Specifically, the exhaust port is arranged on the side face of the exhaust pipeline 5, a dehumidifier is arranged in the exhaust pipeline 5, and the flue gas enters the exhaust pipeline 5 from bottom to top from the water tank 4 and is cleaned again after passing through the dehumidifier, so that the flue gas is cleaned deeply. The dehumidifier is a corrugated plate dehumidifier. Optionally, a spray device may be disposed between the two dehumidifiers for cleaning the dehumidifier.

In some embodiments, as shown in fig. 1, a water baffle 11 is also provided in the water tank 4, the bottom of the water baffle 11 being lower than the bottom of the overflow 6.

Specifically, the water baffle 11 is arranged in the water tank 4 and can prevent short circuit of flue gas, and the bottom of the water baffle 11, namely the lower edge of the water baffle 11, is lower than the bottom of the overflow port 6, so that the flue gas enters the flue gas pipeline 1 of the adjacent washing mechanism after passing through liquid in the water tank 4, and cleaning of the flue gas is realized.

In some embodiments, as shown in fig. 1, a plurality of water baffles 11 are arranged perpendicular to the direction of flow of the flue gas, the water baffles 11 being located between the flue gas duct 1 and the venturi duct 3.

Specifically, the water baffle 11 is arranged corresponding to each stage of washing mechanism, the water baffle 11 is positioned between the flue gas pipeline 1 and the venturi pipeline 3, and the water baffle 11 can obstruct the flow of flue gas.

In some embodiments, as shown in fig. 1, the venturi pipes 3 have a plurality of venturi pipes, and a nozzle is correspondingly arranged above each venturi pipe 3.

Specifically, the number of venturi pipes 3 of each stage of washing mechanism can be the same or different, and optionally, the number of venturi pipes 3 of each stage of washing mechanism is two, so that debugging and overhaul are facilitated. Optionally, the plurality of wires are arranged in parallel. The arrangement further improves the flue gas treatment efficiency and the treatment capacity, and the equipment treatment capacity and the treatment efficiency are higher. The plurality here is at least two, such as three, four, etc. The venturi tube 3 of the secondary washing mechanism is lower than the venturi tube 3 of the primary washing mechanism in height, and when the flue gas enters the venturi tube, self-pumping force can be formed on the basis of no external power equipment under the action of venturi effect, and the flue gas is fully in gas-water contact.

In some embodiments, the tank 4 further includes a refill port and a purge cover that is pivotally connected to the tank 4.

Specifically, the fluid infusion mouth is used for supplementing liquid in to the water tank 4, and the clearance apron rotates with water tank 4 top surface and is connected, and the clearance apron has sealed the clearance mouth of water tank 4, and water tank 4 sets up a plurality of clearance mouthfuls and is convenient for clear up water tank 4 inside.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A multi-stage flue gas scrubbing apparatus comprising:

the primary washing mechanism comprises a flue gas pipeline and a venturi pipeline, the flue gas pipeline is communicated with the venturi pipeline through a sealing piece, a plurality of sprayers are arranged in the flue gas pipeline of the primary washing mechanism, and a flue inlet is formed in the flue gas pipeline;

the secondary washing mechanism comprises a flue gas pipeline and a venturi pipeline, and a plurality of sprayers and fillers are arranged in the flue gas pipeline of the secondary washing mechanism;

the top surface of the water tank is communicated with the primary washing mechanism and the secondary washing mechanism, the smoke exhaust pipeline is positioned at one end of the top surface of the water tank far away from the primary washing mechanism, and the side surface of the water tank is provided with an overflow port and a drain outlet.

2. The flue gas multistage scrubbing apparatus according to claim 1, wherein the height of the pipes of the secondary scrubbing mechanism is lower than the height of the pipes of the primary scrubbing mechanism, and the number of sprayers of the secondary scrubbing mechanism is less than the number of sprayers of the primary scrubbing mechanism.

3. The flue gas multistage scrubbing apparatus of claim 2, further comprising a tertiary scrubbing mechanism having a conduit with a lower height than a conduit of the secondary scrubbing mechanism.

4. The flue gas multistage washing device according to claim 1, wherein a stirring device is arranged in the water tank.

5. The flue gas multistage washing device according to claim 4, wherein a slope is provided at the bottom of the inside of the water tank, the slope being inclined toward the flue gas discharge duct.

6. The flue gas multistage washing device according to claim 1, wherein the flue gas outlet is located at the side of the flue gas duct, and a filler is arranged in the flue gas duct, and the filler is lower than the flue gas outlet.

7. The flue gas multistage washing device according to claim 1, wherein a water baffle is further arranged in the water tank, and the bottom of the water baffle is lower than the bottom of the overflow port.

8. The flue gas multistage scrubbing apparatus according to claim 7, wherein a plurality of said water baffles are disposed perpendicular to the direction of flow of the flue gas, said water baffles being located between the flue gas duct and the venturi duct.

9. The flue gas multistage scrubbing device according to claim 8, wherein a plurality of venturi pipes are provided, and a nozzle is correspondingly arranged above each venturi pipe.

10. The flue gas multistage scrubbing apparatus of claim 1, wherein the water tank further comprises a make-up port and a cleaning cover plate, the cleaning cover plate being pivotally connected to the water tank.