CN220397569U - Flue gas treatment device - Google Patents

Abstract

The utility model discloses a smoke treatment device, which relates to the technical field of smoke treatment and aims at solving the problem that the smoke treatment device cannot recycle spray water.

Description

Flue gas treatment device

Technical Field

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

Background

The boiler is an energy conversion device, coal is added into the boiler, heat generated by burning the coal heats water in the boiler, so that the purpose of heating is achieved by circulating the water, hot water and steam generated in the boiler can directly provide heat energy required by industrial production and people living, and steam can be converted into mechanical energy through a steam power device or converted into electric energy through a generator.

Because the boiler uses fire coal as main fuel, a large amount of flue gas can be generated when the boiler is used, and the boiler is directly discharged into the air to pollute the environment, and meanwhile, a large amount of heat energy can be taken away in the flue gas generated by the boiler to cause energy loss, and a spraying device is generally adopted to spray the flue gas in the flue gas treatment process at present so as to reduce most of smoke dust contained in the flue gas and further achieve preliminary treatment of the flue gas.

The water after spraying the flue gas contains a large amount of smoke dust and becomes sewage, the sewage can be directly discharged under normal conditions and can not be recycled, so that the waste of water resources can be caused, the environment can be polluted by the sewage, and the water can also take away a large amount of heat energy in the flue gas during spraying, and the heat loss can be caused by directly discharging the spray water.

Disclosure of Invention

In order to solve the problems that the flue gas treatment device cannot recycle spray water, the utility model provides a flue gas treatment device, which comprises a boiler, wherein a flue pipe is communicated with the boiler, a heat exchange component is arranged on the flue pipe, a spray header is arranged in the flue pipe, a water inlet is communicated with the spray header, the flue pipe is communicated with the filter tank so as to collect water sprayed by the spray header, a water return pipe is communicated with the filter tank, the other end of the water return pipe is communicated with the heat exchange component, and a water pump is arranged on the water return pipe.

Through adopting above-mentioned technical scheme, the water pump can be with the spray water extraction that filters the jar after filtering in the heat transfer module carries out the heat transfer through the wet return, realizes the purpose at the utilization to spray water filtration, simultaneously, the heat in the flue gas also can be being fully utilized in taking away when spray water sprays, effectual reduction water consumption and sewage discharge, very big saving water resource cost and sewage treatment cost reach energy saving and emission reduction's purpose.

The utility model is further provided with: the water return pipe is communicated with a water return branch pipe through a tee joint, and the other end of the water return branch pipe is communicated with the water inlet; and a water supplementing port is arranged on the filtering tank.

Through adopting above-mentioned technical scheme, can also be with the water after filtering again to spray the in-process, further messenger's spray water can multiple times circulation recycle.

The utility model is further provided with: the heat exchange assembly comprises a primary heat exchange tube and a secondary heat exchange tube, the primary heat exchange tube and the secondary heat exchange tube are sleeved on the smoke tube, and the primary heat exchange tube is arranged at the downstream of the secondary heat exchange tube.

Through adopting above-mentioned technical scheme, can carry out multistage heat transfer to the flue gas in the tobacco pipe, and then make the heat in the flue gas can more abundant by the displacement, make the heat extravagant less, save coal-fired resource, further save coal-fired cost.

The utility model is further provided with: the primary heat exchange tube is communicated with the secondary heat exchange tube, the water return tube is communicated with the primary heat exchange tube, and the secondary heat exchange tube is communicated with the water cavity of the boiler.

Through adopting above-mentioned technical scheme, the water after the heat transfer is poured into the boiler and is heated, and the intensification can be faster, further saving the fuel consumption.

The utility model is further provided with: and a dust removing filter element is arranged in the smoke tube and is positioned below the spray header.

Through adopting above-mentioned technical scheme, the flue gas in the tobacco pipe can be filtered to the dust removal filter core, and spray the back water can drip on the dust removal filter core, and then play the washing effect to the dust removal filter core, avoid the unobstructed of the too much influence flue of laying dust on the dust removal filter core.

The utility model is further provided with: the smoke tube is provided with a bending part, the bending part is arranged below the dust removal filter element, the filter tank is communicated with the bending part, and the filter tank is arranged below the bending part.

By adopting the technical scheme, the bending part can avoid the backflow of the spray water into the boiler.

The utility model is further provided with: two conical hoppers are sequentially arranged in the filter tank from top to bottom, an adsorption layer and a filter layer are arranged on the conical hoppers and close to the top of the filter tank, and the filter layer is arranged above the adsorption layer.

Through adopting above-mentioned technical scheme, the filter layer can carry out preliminary filtration to spray water, filters out debris such as great impurity dust, and the adsorbed layer can adsorb the spray water after filtering, adsorbs out the difficult filterable material of wherein. The conical hopper positioned above can play a role in blocking water flow, so that the spraying water can be reserved on the adsorption layer for a longer time, and the adsorption is ensured to be more sufficient. The cone-shaped bucket located below can play a role in scale inhibition, some impurities still exist in the cone-shaped bucket after filtration, the impurities are sinking and can leak down along the cone-shaped bucket, and then a part of scale can be blocked in the cone-shaped bucket.

The utility model is further provided with: the water supplementing port and one end, communicated with the filtering tank, of the water return pipe are arranged between the two conical hoppers.

By adopting the technical scheme, the water supplementing port and the water return pipe can be prevented from being contacted with blocked scale, so that the scale impurities contained in the water pumped by the water pump can be less.

The utility model is further provided with: the side wall of the filtering tank is provided with a descaling port, and the descaling port is arranged below the conical hopper close to the bottom of the filtering tank.

Through adopting above-mentioned technical scheme, can realize the clearance to the incrustation scale impurity.

The beneficial effects of the utility model are as follows:

1. through the cooperation of filter tank and wet return, can realize the recycling to spray water, and then effectual reduction water consumption and the sewage discharge volume, very big saving water resource cost and sewage treatment cost, simultaneously, also can guarantee that the heat that spray water brought is recycled, reach energy saving and emission reduction's purpose.

2. Through multistage heat exchange, the heat in the flue gas can be more fully replaced, so that the heat waste is less, the coal-fired resources are saved, and the coal-fired cost is further saved.

Drawings

Fig. 1 shows a schematic diagram of the structure of the present utility model.

Fig. 2 shows a second structural schematic of the present utility model.

Figure 3 shows a cross-sectional view in the A-A direction.

Reference numerals: 1. a boiler; 11. a water chamber; 2. a smoke tube; 21. a dust removal filter element; 22. a bending portion; 3. a heat exchange assembly; 31. a primary heat exchange tube; 32. a secondary heat exchange tube; 4. a spray header; 41. a water inlet; 5. a filter tank; 51. a water supplementing port; 52. a conical hopper; 53. an adsorption layer; 54. a filter layer; 55. a descaling port; 6. a water return pipe; 61. a water pump; 62. a valve; 7. and a water return branch pipe.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

The utility model provides a flue gas treatment device, which comprises a boiler 1, wherein a flue pipe 2 is communicated with the boiler 1, and a heat exchange component 3 is arranged on the flue pipe 2 and is used for replacing heat in flue gas. The inside of the smoke tube 2 is provided with a spray header 4, the spray header 4 is communicated with a water inlet 41, the water inlet 41 is arranged on the outer side of the smoke tube 2, water can be supplied to the spray header 4 in the smoke tube 2 through the water inlet 41, and then the spray header 4 sprays water into the smoke tube 2 to spray and purify smoke in the smoke tube 2.

The boiler further comprises a filter tank 5, wherein the filter tank 5 is arranged on the outer side of the boiler 1, and the smoke tube 2 is communicated with the filter tank 5 through a pipeline, so that spray water sprayed into the smoke tube 2 can flow into the filter tank 5 for filtering. The side wall of the filtering tank 5 is communicated with a water return pipe 6, the other end of the water return pipe 6 is communicated with the heat exchange assembly 3, a water pump 61 and a valve 62 are arranged on the water return pipe 6, and the valve 62 is a stop valve and is used for controlling the opening and closing of the water return pipe 6.

The shower water filtered in the filter tank 5 can be pumped into the heat exchange assembly 3 by the water pump 61 for heat exchange. Because the spray water is in the flue gas contact process, part of heat in the flue gas can be replaced into the spray water, and after the filtered spray water is extracted into the heat exchange assembly 3, the heat energy carried in the spray water can be recycled.

The return water pipe 6 is communicated with a return water branch pipe 7 through a tee joint, the return water branch pipe 7 is positioned at the downstream of the water pump 61, the other end of the return water branch pipe 7 is communicated with the water inlet 41, so that the filtered spray water can be pumped into the spray header 4 along the return water branch pipe 7 and sprayed into the smoke pipe 2 again for spray purification. The side wall of the filtering tank is provided with a water supplementing port 51, and the water supplementing port 51 is used for supplementing water into the filtering tank 5 so as to avoid water shortage in the heat exchange assembly 3 or the spray header 4 caused by consumption of spray water after being repeatedly utilized.

The heat exchange assembly 3 comprises a primary heat exchange tube 31 and a secondary heat exchange tube 32, and the primary heat exchange tube 31 and the secondary heat exchange tube 32 are sleeved on the smoke tube 2 so as to exchange heat of smoke in the smoke tube 2. The primary heat exchange tube 31 and the secondary heat exchange tube 32 are both horizontally arranged, the primary heat exchange tube 31 is positioned at the downstream of the secondary heat exchange tube 32, and the flue gas flowing out of the boiler 1 firstly exchanges heat through the secondary heat exchange tube 32 and exchanges heat after entering the primary heat exchange tube 31.

The primary heat exchange tube 31 is communicated with the secondary heat exchange tube 32 through a pipeline, the water return tube 6 is communicated with the primary heat exchange tube 31 and is used for supplying water into the primary heat exchange tube 31, and the secondary heat exchange tube 32 is communicated with the water cavity 11 of the boiler 1 through a pipeline so as to inject water in the heat exchange assembly 3 into the water cavity 11 of the boiler 1.

Through the cooperation of one-level heat exchange tube 31 and second grade heat exchange tube 32, realize the multistage heat transfer to the flue gas, and then realize the purpose to the abundant replacement of heat in the flue gas, and the water in the heat transfer module 3 is risen to some extent through heat transfer, heats to appointed temperature in the water cavity 11 of injection boiler 1, and then can reduce the consumption of fire coal.

The dust removal filter core 21 is installed in the tobacco pipe 2, and the dust removal filter core 21 is located the below of shower head 4, and after shower head 4 sprayed water, water can fall on the dust removal filter core 21. The dust removal filter core 21 can carry out preliminary filtration to the flue gas, and part smoke and dust in the flue gas can be attached to the dust removal filter core 21, and can play the effect of washing away to the dust removal filter core 21 after the shower water drop that spray header 4 spouted falls on it, wash away the attached smoke and dust on it.

The smoke tube 2 is provided with a bending part 22 downwards, the bending part 22 is arranged below the dust removing filter element 21, the bending part 22 can prevent spray water from flowing into the boiler 1 along the smoke tube 2, and the filter tank 5 is arranged below the bending part 22 and communicated with the lowest part of the bending part 22 through a pipeline, so that water in the bending part 22 flows into the filter tank 5.

Two cone-shaped hoppers 52 are arranged in the filter tank 5, the cone-shaped hoppers 52 are connected to the inner wall of the filter tank 5 through bolts, the opening of each cone-shaped hopper 52 is arranged upwards, and the two cone-shaped hoppers 52 are sequentially arranged from top to bottom. An adsorption layer 53 and a filter layer 54 are arranged on the conical hopper 52 close to the top of the filter tank 5, the filter layer 54 is PP cotton filter cloth, the adsorption layer 53 is activated carbon, and the filter layer 54 is positioned above the adsorption layer 53.

When the spraying water that the flue does not flow into the filter tank 5, can first advance the filtration of filter layer 54, filter out great impurity smoke and dust etc. and adsorb in advancing the adsorbed layer 53, adsorb out the tiny impurity smoke and dust in the spraying water to realize the absorptive purpose of spraying water filtration, and the toper fill 52 that is located the top can play the effect that hinders the flow to spraying water, makes spraying water can remain for a period more in adsorbed layer 53, and then guarantees more abundant by the absorption.

The one end that moisturizing mouth 51 and wet return 6 are linked together with filtering jar 5 all sets up between two toper fights 52, and when the shower water flowed into filtering jar 5 bottom by the toper fight 52 of top, the partial impurity that remains in its shower water can deposit to the below of bottom toper fight 52, and then is close to the toper fight 52 of filtering jar 5 bottom and can play the scale inhibition effect.

The water supplementing port 51 and the water return pipe 6 are arranged between the two conical hoppers 52 at the end communicated with the filtering tank 5, so that the water supplementing port 51 and the water return pipe 6 can be prevented from being contacted with the scale blocked by the conical hoppers 52, and further, the water pumped by the water pump 61 can contain less scale impurities.

The filter tank 5 is provided with a descaling port 55 on the side wall, the descaling port 55 is arranged below the bottom conical hopper 52, a rubber block is blocked on the descaling port 55, and when filtration is performed, the descaling port 55 is blocked by the rubber block, so that water leakage of the filter tank 5 is avoided.

In summary, the utility model can realize the recycling of the spray water through the cooperation of the filter tank 5 and the water return pipe 6, thereby effectively reducing the water consumption and the sewage discharge, greatly saving the water resource cost and the sewage treatment cost, simultaneously ensuring the recycling of the heat brought by the spray water and achieving the purposes of energy conservation and emission reduction. Through multistage heat exchange, the heat in the flue gas can be more fully replaced, so that the heat waste is less, the coal-fired resources are saved, and the coal-fired cost is further saved.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (9)

1. The utility model provides a flue gas processing apparatus, including boiler (1), the intercommunication has tobacco pipe (2) on boiler (1), install heat exchange assembly (3) on tobacco pipe (2), tobacco pipe (2) inside are provided with shower head (4), the intercommunication has water inlet (41) on shower head (4), still including filtration jar (5), its characterized in that: the smoke tube (2) with filter tank (5) are linked together, are used for collecting the water that shower head (4) sprayed, the intercommunication has wet return (6) on filter tank (5), wet return (6) the other end with heat exchange assembly (3) are linked together, install water pump (61) on wet return (6).

2. The flue gas treatment device according to claim 1, wherein: a water return branch pipe (7) is communicated with the water return pipe (6) through a tee joint, and the other end of the water return branch pipe (7) is communicated with the water inlet (41); and a water supplementing port (51) is arranged on the filtering tank (5).

3. The flue gas treatment device according to claim 1, wherein: the heat exchange assembly (3) comprises a primary heat exchange tube (31) and a secondary heat exchange tube (32), the primary heat exchange tube (31) and the secondary heat exchange tube (32) are sleeved on the smoke tube (2), and the primary heat exchange tube (31) is arranged at the downstream of the secondary heat exchange tube (32).

4. A flue gas treatment device according to claim 3, wherein: the primary heat exchange tube (31) is communicated with the secondary heat exchange tube (32), the water return tube (6) is communicated with the primary heat exchange tube (31), and the secondary heat exchange tube (32) is communicated with the water cavity (11) of the boiler (1).

5. The flue gas treatment device according to claim 1, wherein: a dust removal filter element (21) is arranged in the smoke tube (2), and the dust removal filter element (21) is positioned below the spray header (4).

6. The flue gas treatment device according to claim 5, wherein: be provided with bending portion (22) on tobacco pipe (2), bending portion (22) set up the below of dust removal filter core (21), filtration jar (5) with bending portion (22) are linked together, filtration jar (5) set up the below of bending portion (22).

7. The flue gas treatment device according to claim 2, wherein: two conical hoppers (52) are sequentially arranged in the filter tank (5) from top to bottom, an adsorption layer (53) and a filter layer (54) are arranged on the conical hoppers (52) close to the top of the filter tank (5), and the filter layer (54) is arranged above the adsorption layer (53).

8. The flue gas treatment device according to claim 7, wherein: one end of the water supplementing port (51) and one end of the water return pipe (6) which are communicated with the filtering tank (5) are arranged between the two conical hoppers (52).

9. The flue gas treatment device according to claim 8, wherein: the side wall of the filtering tank (5) is provided with a descaling port (55), and the descaling port (55) is arranged below the conical hopper (52) close to the bottom of the filtering tank (5).