CN211232888U - Comprehensive treatment box for waste incineration flue gas - Google Patents

Abstract

The utility model relates to a waste incineration flue gas integrated processing case, the power distribution box comprises a box body, the box separates into two combustion chambers, heat transfer district, SOx/NOx control district and the dust removal defogging district that feeds through in proper order through the baffle, the box has into mouth and exhaust port, two combustion chambers pass through into mouth and advance tobacco pipe way intercommunication, the dust removal removes the defogging district and passes through the exhaust port with the outside intercommunication of box. The utility model has the advantages that: the utility model provides a waste incineration flue gas comprehensive treatment case arranges tail gas treatment equipment such as flue gas second combustion chamber, waste heat exchanger, wet flue gas desulfurization denitration, wet-type electric precipitation defogging ingenious in the box, accomplishes small-size integration with the waste heat utilization of flue gas and the high integration of tail gas treatment in a cabinet, accomplishes that the windage is low, save material, efficient.

Description

Comprehensive treatment box for waste incineration flue gas

Technical Field

The utility model relates to a flue gas treatment facility, concretely relates to waste incineration flue gas comprehensive treatment case.

Background

Generally, there are two products of organic solid wastes (such as household garbage) which are thermally degraded (burned or pyrolyzed), namely primary flue gas pyrolysis gas and waste residues. The former is a carrier of available resources, namely energy, and is also a main carrier of environmental pollutants, so that how to make energy utilization and pollutant control treatment of primary flue gas is important in the organic solid waste treatment process.

At present, the common method is to use a boiler for heat exchange utilization, the tail gas adopts a conventional semi-dry treatment mode of desulfurization and denitrification, activated carbon injection and cloth bag dust removal (the waste grate furnace incineration power generation technology is mostly adopted), the devices in each treatment link are mostly arranged in series and in a separated mode, the system has large wind resistance, large investment and large occupied area, and the method is not suitable for small integration.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a waste incineration flue gas comprehensive treatment case of high integration, small-size integration, low windage is provided.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a waste incineration flue gas integrated processing case, includes the box, the box passes through the baffle and separates into two combustion chambers, heat transfer district, SOx/NOx control district and the dust removal defogging district that communicate in proper order, the box has inlet flue and exhaust port, two combustion chambers pass through inlet flue and inlet flue pipe intercommunication, the dust removal defogging district passes through the exhaust port with the outside intercommunication of box.

The utility model has the advantages that: the utility model provides a waste incineration flue gas comprehensive treatment case arranges tail gas treatment device such as flue gas second combustion chamber, waste heat exchanger, wet flue gas desulfurization denitration, wet-type electric precipitation defogging ingenious in the box, accomplishes small-size integration with the high integration of waste heat utilization and the tail gas treatment of flue gas in a cabinet. The utility model has the advantages of it is following: firstly, air pipes are not needed for connection, so that the wind resistance of a system is eliminated, and the pressure loss is reduced; secondly, partition walls are shared, so that material investment is saved; sharing refrigerant and cleaning medium to improve efficiency; saving space; integration in small size; providing a one-stop environment-friendly treatment and energy utilization solution for the primary flue gas (pyrolysis gas).

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, a combustion gun for raising the temperature of the secondary combustion chamber is arranged on the side wall of the secondary combustion chamber.

The beneficial effect of adopting the further scheme is that: the burning gun heats the secondary combustion chamber, and the gaseous micromolecule pollutants which are not completely oxidized are oxidized in the secondary combustion chamber.

The secondary combustion chamber is characterized by further comprising a blower, wherein a secondary air channel is further formed in the side wall of the secondary combustion chamber, and the blower is fixed in the secondary air channel and used for introducing air into the secondary combustion chamber.

The beneficial effect of adopting the further scheme is that: air is blown into the fuel chamber to help the gaseous pollutants flow forwards, and oxygen in the air enters the box body to facilitate the oxidation of the pollutants.

Further, the flue gas cooling device also comprises a heat exchanger for cooling flue gas, and the heat exchanger is fixedly connected in the heat exchange area.

The beneficial effect of adopting the further scheme is that: the refrigerant in the heat exchanger absorbs the heat of the flue gas, and the flue gas cooling and the flue gas waste heat utilization are realized.

Further, still include the shower, the shower fixed set up in the roof in SOx/NOx control district, the shower is external to connect spray water piping for to SOx/NOx control district lets in spray water, the diapire of box has the outlet.

The beneficial effect of adopting the further scheme is that: the wet desulfurization and denitration technology is mature, the reaction speed is high, the production and operation are safe and reliable, the occupied size is small, the device is suitable for small equipment, and meanwhile, the cooling and dust removal of the flue gas can be realized.

And the wet electric dust removal demister is fixedly arranged in the dust and mist removal area.

The beneficial effect of adopting the further scheme is that: the wet electric dust removal demister removes particles and dust in the flue gas.

Further, still including being used for taking out the exhaust fan of flue gas in the box, exhaust fan fixed set up in the exhaust port.

The beneficial effect of adopting the further scheme is that: the smoke exhaust fan accelerates the flow of smoke from the smoke inlet to the smoke outlet and exhausts the treated smoke out of the box body.

Further, the second combustion chamber is arranged at one end of the box body and is divided into an inverted U shape through a first partition plate, the smoke inlet is positioned at the bottom of one end of the box body, and the smoke inlet is communicated with one side, close to the end wall of one end of the box body, of the second combustion chamber.

The beneficial effect of adopting the further scheme is that: the second combustion chamber is in an inverted U shape, the channel of the second combustion chamber is long, the occupied area is small, the smoke can stay in the second combustion chamber for enough time, the smoke can be fully oxidized or decomposed in the second combustion chamber, and meanwhile, the small integration of the waste incineration smoke comprehensive treatment box is realized.

Further, the heat exchange area, the desulfurization and denitrification area and the dust and fog removal area are arranged at the other end of the box body and are sequentially arranged from bottom to top, one end of the heat exchange area is communicated with one side, away from the end wall of one end of the box body, of the second combustion chamber, the other end of the heat exchange area is communicated with the other end of the desulfurization and denitrification area, one end of the desulfurization and denitrification area is communicated with one end of the dust and fog removal area, and the smoke exhaust port is located on the top wall of the other end of the box body and is communicated with the other end of the dust and fog removal area.

The beneficial effect of adopting the further scheme is that: flue gas (or pyrolysis gas) of waste incineration (or pyrolysis) enters an inverted U-shaped secondary combustion chamber, the temperature of the flue gas in the secondary combustion chamber is raised to high temperature (850-1000 ℃) by a burner, the high-temperature flue gas enters from one end of a heat exchange area which is communicated with the secondary combustion chamber and horizontally placed, exchanges heat with a refrigerant (water, heat conduction oil and the like), the temperature of the flue gas is reduced to 150-180 ℃, the flue gas is discharged from the other end of the heat exchange area, the flue gas rises to enter a desulfurization and denitrification area, desulfurization and denitrification are performed under the action of spray water (alkali liquor), the flue gas is further cooled and dedusted, the flue gas is bent to rise to enter a dedusting and demisting area, and the tail.

Drawings

Fig. 1 is the structure schematic diagram of the utility model relates to a waste incineration flue gas comprehensive treatment case.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a box body 11, a smoke inlet 12, a smoke outlet 13, a first clapboard 14, a second clapboard 15 and a third clapboard,

2. a second combustion chamber 21, a combustion gun 22, a blower,

3. a heat exchange zone, 31, a heat exchanger,

4. a desulfurization and denitrification area 41, a spray pipe,

5. a dust and mist removing area 51, a wet electric dust and mist removing device,

6. a smoke exhaust fan.

Detailed Description

The principles and features of the present invention are described below, with the examples being given only for the purpose of illustration and not for the purpose of limiting the scope of the invention.

As shown in FIG. 1, the utility model relates to a waste incineration flue gas integrated processing case, including box 1, box 1 separates into two combustion chambers 2, heat transfer district 3, SOx/NOx control district 4 and the dust removal defogging district 5 that communicate in proper order through the baffle, box 1 has inlet flue 11 and exhaust port 12, two combustion chambers 2 pass through inlet flue 11 and inlet flue pipe intercommunication, the dust removal defogging district 5 passes through exhaust port 12 with box 1's outside intercommunication.

As a further scheme of the present embodiment, the side wall of the second combustion chamber 2 is provided with a combustion gun 21 for raising the temperature of the second combustion chamber 2.

Specifically, the combustion gun 21 is installed on the outer side wall of the box body 1, the gun head of the combustion gun 21 extends into the secondary combustion chamber 2, and the flue gas in the secondary combustion chamber 2 is heated, so that gaseous molecules which are not completely oxidized in the flue gas can be oxidized at high temperature.

As a further scheme of this embodiment, the secondary combustion chamber further includes a blower 22, a secondary air duct is further provided on a side wall of the secondary combustion chamber 2, and the blower 22 is fixed in the secondary air duct and is used for introducing air into the secondary combustion chamber 2.

As a further scheme of this embodiment, the system further includes a heat exchanger 31 for cooling the flue gas, and the heat exchanger 31 is fixedly connected in the heat exchange zone 3.

Specifically, the heat exchanger 31 may be a tube heat exchanger or a plate heat exchanger in the prior art, or may be an existing heat exchanger in another form, and the heat exchanger 31 has a refrigerant inlet and a refrigerant outlet, and both the refrigerant inlet and the refrigerant outlet are communicated with a refrigerant pipeline outside the tank 1. When the refrigerant is water, the hot water discharged from the refrigerant outlet can be supplied to the place needing the hot water, so that the effective utilization of heat is realized.

As a further scheme of this embodiment, the desulfurization and denitrification integrated device further includes a spray pipe 41, the spray pipe 41 is fixedly arranged on the top wall of the desulfurization and denitrification area 4, the spray pipe 41 is externally connected with a spray water pipeline for introducing spray water into the desulfurization and denitrification area 4, and the bottom wall of the box body 1 is provided with a water outlet.

Specifically, shower 41 and outside spray water piping intercommunication, spray water are alkali lye, and spray water is the spray water that wet flue gas desulfurization denitration adopted among the prior art.

As a further scheme of this embodiment, the device further includes a wet electric dust and mist removing device 51, and the wet electric dust and mist removing device 51 is fixedly disposed in the dust and mist removing region 5.

Specifically, the wet electric dust-removing demister 51 may be a plate type or a tube type wet electric dust-removing demister in the prior art.

As a further scheme of this embodiment, still include and be used for taking out the flue gas in the box 1 exhaust fan 6 of discharging fume, exhaust fan 6 fixed set up in exhaust port 12.

As a further scheme of this embodiment, the second combustion chamber 2 is disposed at one end of the box body 1 and is divided into an inverted U-shape by a first partition plate 13, the smoke inlet 11 is located at the bottom of one end of the box body 1, and the smoke inlet 11 is communicated with one side of the second combustion chamber 2 close to the end wall of one end of the box body 1.

Specifically, as shown in fig. 1, the second combustion chamber 2 is located at the right end of the box body 1 and is in an inverted U shape, the smoke inlet 11 is located at the bottom of the right end of the box body 1, and the smoke inlet 11 is communicated with the lower end of the right side of the second combustion chamber 2.

As a further scheme of this embodiment, the heat exchange zone 3, the desulfurization and denitrification zone 4, and the dust and mist removal zone 5 are disposed at the other end of the box body 1 and sequentially arranged from bottom to top, one end of the heat exchange zone 3 is communicated with the secondary combustion chamber 2, the other end of the heat exchange zone 3 is communicated with the other end of the desulfurization and denitrification zone 4, one end of the desulfurization and denitrification zone 4 is communicated with one end of the dust and mist removal zone 5, and the smoke exhaust port 12 is located on the top wall of the other end of the box body 1 and is communicated with the other end of the dust and mist removal zone 5.

Specifically, as shown in fig. 1, the box body 1 is divided into the second combustion chamber 2, the heat exchange zone 3, the desulfurization and denitrification zone 4 and the dust and mist removal zone 5 by a first partition plate 13, a second partition plate 14 and a third partition plate 15. First baffle 13 is vertical flat board, the bottom of first baffle 13 and the one end diapire fixed connection of box 1, advance cigarette mouth 11 set up in between the one end wall of first baffle 13 and box 1. The second partition 14 is an L-shaped plate, one end of which is fixedly connected with the top wall of the box body 1, and the other end of which is horizontally arranged towards the direction far away from the first partition 13. The third partition 15 is horizontally disposed in a plate shape, one end of the third partition is fixedly connected to the other end wall of the box body 1, and the third partition 15 is located above the other end of the second partition 14. Form labyrinth passageway in the box 1, the flue gas can not pass through the pipeline, directly passes through the processing that the flue gas was accomplished in second combustion chamber 2, heat transfer district 3, SOx/NOx control district 4 and dust removal defogging district 5 in proper order, and the system windage is little, compact structure.

Specifically, water discharged by the wet electro-dedusting demister 51 can flow to the water outlet of the bottom wall of the box body 1 along the third partition plate 15 and the second partition plate 14, and the effects of cooling and dedusting can be realized in the flowing process, so that the common refrigerant and the cleaning medium are realized, and the efficiency is improved. The liquid discharged from the water discharge port can be recovered and disposed, and then introduced into the shower pipe 41 for recycling.

Flue gas (or pyrolysis gas) of waste incineration (or pyrolysis) enters an inverted U-shaped secondary combustion chamber, the temperature of the flue gas in the secondary combustion chamber is raised to high temperature (850-1000 ℃) by a burner, the high-temperature flue gas enters from one end of a heat exchange area which is communicated with the secondary combustion chamber and horizontally placed, exchanges heat with a refrigerant (water, heat conduction oil and the like), the temperature of the flue gas is reduced to 150-180 ℃, the flue gas is discharged from the other end of the heat exchange area, the flue gas rises to enter a desulfurization and denitrification area, desulfurization and denitrification are performed under the action of spray water (alkali liquor), the flue gas is further cooled and dedusted, the flue gas is bent to rise to enter a dedusting and demisting area, and the tail.

In the description of the present invention, it should be noted 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 the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a waste incineration flue gas integrated processing case, a serial communication port, includes box (1), box (1) separates into two combustion chambers (2), heat transfer district (3), SOx/NOx control district (4) and dust removal defogging district (5) that communicate in proper order through the baffle, box (1) has into mouth (11) and exhaust port (12), two combustion chambers (2) are passed through enter mouth (11) and advance tobacco pipe way intercommunication, dust removal defogging district (5) are passed through exhaust port (12) with the outside intercommunication of box (1).

2. The waste incineration flue gas comprehensive treatment tank of claim 1, characterized in that the side wall of the secondary combustion chamber (2) is provided with a combustion lance (21) for raising the temperature of the secondary combustion chamber (2).

3. The comprehensive treatment box for waste incineration flue gas as claimed in claim 2, further comprising a blower (22), wherein the side wall of the secondary combustion chamber (2) is further provided with a secondary air duct, and the blower (22) is fixed in the secondary air duct and used for introducing air into the secondary combustion chamber (2).

4. The waste incineration flue gas comprehensive treatment tank according to claim 1, further comprising a heat exchanger (31) for cooling the flue gas, wherein the heat exchanger (31) is fixedly connected in the heat exchange area (3).

5. The waste incineration flue gas comprehensive treatment tank of claim 1, further comprising a spray pipe (41), wherein the spray pipe (41) is fixedly arranged on the top wall of the desulfurization and denitrification area (4), the spray pipe (41) is externally connected with a spray water pipeline and used for introducing spray water into the desulfurization and denitrification area (4), and a water outlet is formed in the bottom wall of the tank body (1).

6. The comprehensive treatment box for waste incineration flue gas as claimed in claim 1, further comprising a wet electric dust and mist eliminator (51), wherein the wet electric dust and mist eliminator (51) is fixedly arranged in the dust and mist removing zone (5).

7. The waste incineration flue gas comprehensive treatment tank of claim 1, further comprising a smoke exhaust fan (6) for extracting flue gas in the tank body (1), wherein the smoke exhaust fan (6) is fixedly arranged in the smoke exhaust port (12).

8. The waste incineration flue gas comprehensive treatment tank according to any one of claims 1 to 7, wherein the secondary combustion chamber (2) is arranged at one end of the tank body (1) and is divided into an inverted U shape by a first partition plate (13), the smoke inlet (11) is positioned at the bottom of one end of the tank body (1), and the smoke inlet (11) is communicated with one side of the secondary combustion chamber (2) close to the end wall of one end of the tank body (1).

9. The comprehensive treatment box for waste incineration flue gas as claimed in claim 8, wherein the heat exchange region (3), the desulfurization and denitrification region (4) and the dust and fog removal region (5) are arranged at the other end of the box body (1) and are sequentially arranged from bottom to top, one end of the heat exchange region (3) is communicated with one side of the secondary combustion chamber (2) far away from the end wall of one end of the box body (1), the other end of the heat exchange region (3) is communicated with the other end of the desulfurization and denitrification region (4), one end of the desulfurization and denitrification region (4) is communicated with one end of the dust and fog removal region (5), and the smoke exhaust port (12) is located on the top wall of the other end of the box body (1) and is communicated with the other end of the dust and fog removal region (5).

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