CN210979864U - Hazardous waste burns line fume extractor - Google Patents

Abstract

The utility model discloses a hazardous waste burns line fume extractor, including the cooling tower, the adsorption tank, the spray column, first communicating pipe and second communicating pipe, the top of cooling tower is provided with into the tobacco pipe, the bottom of cooling tower is provided with cooling tube and waste water exit tube through the drain pipe, the one end top that the drain pipe stretched into the cooling tower is provided with the atomizer, the left side wall of adsorption tank is provided with agitator motor, the agitator motor right side is provided with the raise dust board through the (mixing) shaft, be provided with the connecting pipe in the middle of the top of adsorption tank, the right side wall bottom of spray column is provided with the neutralization pipe, the one end bottom that the neutralization pipe stretched into the cooling tower is provided with the alkali lye shower nozzle, the inner chamber top of cooling tower is provided with the defroster, the top of cooling tower is provided with the gas. The utility model discloses can carry out reasonable processing to the high contaminated flue gas that the hazardous waste burns the line and produces, reduce the content of discharging the pollutant in the atmosphere, but partial raw materials recycle reduces the treatment cost.

Description

Hazardous waste burns line fume extractor

Technical Field

The utility model relates to a waste incineration emission handles technical field, in particular to hazardous waste burns line and arranges cigarette device.

Background

The hazardous waste is listed in a national hazardous waste list or is accurately determined as hazardous waste according to a national regulated hazardous waste identification standard, and incineration is an important treatment means in a process for treating the hazardous waste. However, a large amount of organic polymer gas, acidic harmful gas and solid particles containing heavy metals exist in flue gas generated after incineration of waste, and because the generation temperature of dioxin, a highly toxic product of incineration, is about 400 ℃, in order to reduce the generation of dioxin in the incineration process, the general incineration temperature is about 1000 ℃, but after the high-temperature flue gas is discharged and cooled to about 400 ℃, dioxin is still generated, the flue gas generated on an incineration line needs to be treated to meet the emission standard, and a hazardous waste incineration line smoke exhaust device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hazardous waste burns line fume extractor, main aim at can carry out reasonable processing to the highly polluted flue gas that hazardous waste burns the line and produces, reduces the content of discharging the pollutant in the atmosphere, but partial raw materials recycle reduces the treatment cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hazardous waste incineration line smoke exhaust device comprises a cooling tower, an adsorption tank and a spray tower, wherein a first communicating pipe is arranged on the right side wall of the cooling tower, one end, away from the cooling tower, of the first communicating pipe is communicated with the left air inlet end at the top of the adsorption tank, a second communicating pipe is arranged on the right side at the top of the adsorption tank, and one end, away from the adsorption tank, of the second communicating pipe is communicated with the air inlet of the left side wall of the spray tower;

the top of the cooling tower is provided with a smoke inlet pipe, the left side wall of the cooling tower is provided with a water inlet pipe, the bottom of the cooling tower is provided with a water outlet pipe, the left side of the bottom of the water outlet pipe is provided with a cooling pipe through a three-way piece, one end of the cooling pipe, far away from the water outlet pipe, extends into the inner cavity of the cooling tower through the top of the left side wall of the cooling tower, the top of one end of the water outlet pipe, extending into the cooling tower, is uniformly provided with atomizing nozzles, the cooling pipe is provided with a water circulating pump, and the bottom of the;

the adsorption tank is divided into a left ripen lime chamber and a right activated carbon chamber by a middle partition plate, a first feed inlet and a second feed inlet are formed in the left side and the right side of the top of the adsorption tank, a stirring motor is arranged on the left side wall of the adsorption tank, a stirring shaft is arranged at the power output end on the right side of the stirring motor and extends into the ripen lime chamber and the activated carbon chamber, dust raising plates are arranged on the outer walls of the ends, extending into the ripen lime chamber and the activated carbon chamber, of the stirring shaft, a connecting pipe is arranged in the middle of the top of the adsorption tank, an air inlet and an air outlet of the connecting pipe are respectively communicated with the ripen lime chamber and the activated carbon chamber, and a first discharge pipe and a second discharge pipe are;

the utility model discloses a cooling tower, including spray tower, right side wall, neutralizing pipe, inner chamber top, defroster, gas vent, the bottom of spray tower left side wall is provided with alkali lye and advances the pipe, the right side wall bottom of spray tower is provided with neutralizing pipe, and the top drain pipe of neutralizing pipe stretches into the inner chamber of cooling tower, neutralizing pipe stretches into the one end bottom of cooling tower and is provided with the alkali lye shower nozzle, be provided with the alkali lye circulating pump on the neutralizing pipe, the inner chamber top of cooling tower is provided with the defroster, the top of cooling tower is provided with the gas vent.

Preferably, all be provided with the valve for liquid on inlet tube, cooling tube, waste water exit tube, alkali lye inlet tube, neutralization pipe and the waste liquid exit tube, be convenient for control cooling tower and spray column in the flow direction of liquid.

Preferably, the first feeding hole and the second feeding hole are both connected with sealing covers in a threaded mode, and required materials can be conveniently added into the clinker chamber and the activated carbon chamber.

Preferably, the first discharging pipe and the second discharging pipe are both provided with solid valves.

Preferably, the connecting pipe is in an inverted U shape, so that powdered hydrated lime in the hydrated lime chamber is prevented from entering the activated carbon chamber as much as possible, and the U-shaped pipeline design can reduce the residue of the powdered materials in the connecting pipe.

Preferably, the slaked lime in the slaked lime chamber and the activated carbon in the activated carbon chamber are both powdery fine particles, and the powdery slaked lime and the powdery activated carbon are easy to lift in the rotation process of the dust raising plate and fill the slaked lime chamber and the activated carbon chamber, so that the contact area of the waste gas with the slaked lime and the activated carbon is effectively increased.

Preferably, the alkali liquor in the spray tower is sodium hydroxide solution for neutralizing the residual acid gas in the waste gas, and the ratio of the acid gas in the waste gas is reduced as much as possible.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model makes the high temperature flue gas pass through the cooling tower, the adsorption tank and the spray tower in turn, fully mix with the high temperature flue gas through vaporific water liquid in the cooling tower, make the flue gas directly drop to about 200 ℃, avoid the resynthesis temperature section of the dioxin at 400 ℃, reduce the generation of the dioxin as much as possible, and after vaporific water contacts with the flue gas, can absorb the solid particles in most flue gas and the fluorine-containing, chlorine-containing and sulfur-containing gases which are partially dissolved in the water, absorb most fluorine-containing, chlorine-containing and sulfur-containing gases in the flue gas in the slaked lime chamber of the adsorption tank, absorb most organic polymers and heavy metal impurities in the activated carbon chamber, the atomized alkaline solution in the spray tower reacts with the residual acid gas in the flue gas, absorb a small amount of powdery slaked lime and activated carbon which are taken out in the adsorption tank in the flue gas, reduce harmful substances in the exhausted waste gas as much as possible, to meet emission standards;

2. the utility model discloses a but the equal used cycle of alkaline solution in cooling water and the spray column in the reasonable design cooling tower helps reducing the flue gas treatment cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a cooling tower; 2-an adsorption tank; 3-a spray tower; 4-a first communicating pipe; 5-a second communicating pipe; 6-smoke inlet pipe; 7-water inlet pipe; 8-a drain pipe; 9-a cooling pipe; 10-an atomizing spray head; 11-water circulation pump; 12-a waste water outlet pipe; 13-lime slaking chamber; 14-an activated carbon chamber; 15-a first feed port; 16-a second feed port; 17-a stirring motor; 18-stirring shaft; 19-dust raising plate; 20-connecting pipe; 21-a first discharge pipe; 22-a second tapping pipe; 23-feeding alkali liquor into a pipe; 24-a neutralization tube; 25-an alkali liquor spray head; 26-an alkali liquor circulating pump; 27-a demister; 28-exhaust port; 29-a waste liquid outlet pipe; 30-sealing cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the hazardous waste incineration line smoke exhaust device comprises a cooling tower 1, an adsorption tank 2 and a spray tower 3, wherein a first communicating pipe 4 is arranged on the right side wall of the cooling tower 1, one end of the first communicating pipe 4, which is far away from the cooling tower 1, is communicated with the air inlet end on the left side of the top of the adsorption tank 2, a second communicating pipe 5 is arranged on the right side of the top of the adsorption tank 2, and one end of the second communicating pipe 5, which is far away from the adsorption tank 2, is communicated with the air inlet on the left side wall of the spray tower 3; the top of the cooling tower 1 is provided with a smoke inlet pipe 6, the left side wall of the cooling tower 1 is provided with a water inlet pipe 7, the bottom of the cooling tower 1 is provided with a water outlet pipe 8, the left side of the bottom of the water outlet pipe 8 is provided with a cooling pipe 9 through a tee joint, one end of the cooling pipe 9, which is far away from the water outlet pipe 8, extends into the inner cavity of the cooling tower 1 through the top of the left side wall of the cooling tower 1, the top of one end of the water outlet pipe 8, which extends into the cooling tower 1, is uniformly provided with atomizing nozzles 10, the cooling pipe 9 is provided with a water circulating pump 11; the adsorption tank 2 is divided into a slaked lime chamber 13 on the left side and an activated carbon chamber 14 on the right side by a middle partition plate, a first feed port 15 and a second feed port 16 are arranged on the left side and the right side of the top of the adsorption tank 2, sealing covers 30 are respectively screwed on the first feed port 15 and the second feed port 16 to facilitate the addition of required materials into the slaked lime chamber 13 and the activated carbon chamber 14, a stirring motor 17 is arranged on the left side wall of the adsorption tank 2, a stirring shaft 18 is arranged at the power output end on the right side of the stirring motor 17, the stirring shaft 18 extends into the slaked lime chamber 13 and the activated carbon chamber 14, both the slaked lime in the slaked lime chamber 13 and the activated carbon in the activated carbon chamber 14 are powdery fine particles, the powdery slaked lime and the activated carbon are easily lifted in the rotation process of a dust raising plate 19 to fill the slaked lime chamber 13 and the activated carbon chamber 14, the contact area of waste gas with the slaked lime and the activated carbon is effectively increased, and the dust raising plate 19, a connecting pipe 20 is arranged in the middle of the top of the adsorption tank 2, an air inlet and an air outlet of the connecting pipe 20 are respectively communicated with the slaked lime chamber 13 and the activated carbon chamber 14, the connecting pipe 20 is inverted U-shaped, the situation that powdered slaked lime in the slaked lime chamber 13 enters the activated carbon chamber 14 is reduced as much as possible, the U-shaped pipe design is adopted, the residue of powder materials in the connecting pipe 20 can be reduced, a first discharging pipe 21 and a second discharging pipe 22 are arranged on the left side and the right side of the bottom of the adsorption tank 2, and solid valves are arranged on the first discharging pipe 21 and the second discharging pipe 22; the left side wall of the spray tower 3 is provided with an alkali liquor inlet pipe 23, the bottom of the right side wall of the spray tower 3 is provided with a neutralization pipe 24, a liquid outlet pipe at the top of the neutralization pipe 24 extends into an inner cavity of the spray tower 3, a alkali liquor spray nozzle 25 is arranged at the bottom of one end of the neutralization pipe 24 extending into the spray tower 3, an alkali liquor circulating pump 26 is arranged on the neutralization pipe 24, a demister 27 is arranged at the top of the inner cavity of the spray tower 3, an exhaust port 28 is arranged at the top of the spray tower 3, a waste liquor outlet pipe 29 is arranged at the bottom of the spray tower 3, a water inlet pipe 7, a cooling pipe 9, a waste water outlet pipe 12, an alkali liquor inlet pipe 23, a neutralization pipe 24 and a waste liquor outlet pipe 29 are respectively provided with a liquid valve, so as to control the flow direction of liquid in the cooling tower 1 and the spray tower 3, the alkali liquor in the spray tower 3 is a.

A specific application of this embodiment does, the utility model discloses before the exhaust that produces dangerous waste incineration line is handled, add cooling water to the inner chamber bottom of cooling tower 1 through opening the valve on the inlet tube 8, open the valve that alkali lye entered on the pipe 23 and add the sodium hydroxide solution to the inner chamber bottom of spray tower 3, open sealed lid 30 on first feed inlet 15 and the second feed inlet 16, add powdered hydrated lime and active carbon in hydrated lime room 13 and the active carbon room 14 respectively, then close valve and sealed lid 30. Introducing the incinerated high-temperature flue gas to the top of the cooling tower 1 through the smoke inlet pipe 6, opening a valve on the cooling pipe 9, starting a water circulating pump 11, moving the cooling water at the bottom of the inner cavity of the cooling tower 1 upwards through the cooling pipe 9, spraying mist water upwards in the inner cavity of the cooling tower 1 through an atomizing nozzle 10, fully mixing the mist water with the high-temperature flue gas moving downwards, enabling the flue gas to be directly and rapidly reduced to about 200 ℃, avoiding a resynthesis temperature section of dioxin at 400 ℃, reducing the generation of the dioxin as much as possible, absorbing most of solid particles in the flue gas and fluorine-containing, chlorine-containing and sulfur-containing gases partially dissolved in the water after the mist water is contacted with the flue gas, enabling the cooling water to fall to the bottom of the inner cavity of the cooling tower 1 again after absorbing heat and impurities for reuse, saving water, and closing the valve on the cooling pipe 9 when the cooling water needs to be replaced, the valve on the waste water outlet pipe 12 is opened, after the waste water is discharged, the valve on the waste water outlet pipe 12 is closed, and then cooling water is added through the water inlet pipe 7. After the flue gas which is cooled by the cooling tower 1 and is removed most of solid particle impurities and a small part of water-soluble gas containing fluorine, chlorine and sulfur enters the adsorption tank 2 through the first communication pipe 4, by starting the stirring motor 17, the stirring shaft 18 at the power output end at the right side of the stirring motor 17 is rotated, thereby driving the dust raising plate 19 to rotate in the slaked lime chamber 13 and the activated carbon chamber 14, leading the powdered slaked lime and the powdered activated carbon to be densely distributed in the whole space of the slaked lime chamber 13 and the activated carbon chamber 14 and to be fully mixed and contacted with the flue gas, most of the fluorine, chlorine and sulfur containing gases in the flue gas are absorbed in the slaked lime chamber 13, and then enter the activated carbon chamber 14 through the connecting pipe 20 to absorb most of the organic polymer and heavy metal impurities, in this case, when the slaked lime and the activated carbon need to be replaced, the valves on the first discharge pipe 21 and the second discharge pipe 22 are opened and the slaked lime and the activated carbon are discharged. The flue gas treated by the adsorption tank 2 still has a small amount of acid gas and a small amount of mixed powdery hydrated lime and activated carbon, enters the spray tower 3 through the second communicating pipe 5 and then moves towards the top of the inner cavity of the spray tower 3, the sodium hydroxide solution at the bottom of the inner cavity of the spray tower 3 moves upwards through the neutralization pipe 24 by starting the alkali liquor circulating pump 26, the atomized sodium hydroxide solution is sprayed downwards in the inner cavity of the spray tower 3 through the alkali liquor spray nozzle 25 and is fully mixed with the flue gas to react with the residual acid gas in the flue gas to absorb the powdery hydrated lime and the activated carbon in the flue gas, the flue gas is treated by the demister 27 and then is discharged from the exhaust port 28, when the sodium hydroxide solution needs to be replaced, the valve on the waste liquid outlet pipe 29 is opened, and waste liquid is discharged through the waste liquid outlet pipe 29.

In the embodiment, in the selection of the water circulation pump 11 and the alkali liquor circulation pump 26, it should be noted that the cooling water used in the cooling tower 1 can absorb acid gas, so that the cooling water can be acidic, and the alkali liquor circulation pump 26 is used for an alkaline solution, so that the water circulation pump 11 can use an acid water pump with the model of BA-2105-6C3804, the alkali liquor circulation pump 26 can use an alkaline water pump with the model of 25SFBX-8D, and other elements meeting the use requirements of the embodiment are all available.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," 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 do not necessarily 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.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The utility model provides a hazardous waste burns line fume extractor which characterized in that: the cooling tower comprises a cooling tower (1), an adsorption tank (2) and a spray tower (3), wherein a first communicating pipe (4) is arranged on the right side wall of the cooling tower (1), one end, far away from the cooling tower (1), of the first communicating pipe (4) is communicated with the air inlet end on the left side of the top of the adsorption tank (2), a second communicating pipe (5) is arranged on the right side of the top of the adsorption tank (2), and one end, far away from the adsorption tank (2), of the second communicating pipe (5) is communicated with the air inlet of the left side wall of the spray tower (3);

a smoke inlet pipe (6) is arranged at the top of the cooling tower (1), a water inlet pipe (7) is arranged on the left side wall of the cooling tower (1), a water outlet pipe (8) is arranged at the bottom of the cooling tower (1), a cooling pipe (9) is arranged on the left side of the bottom of the water outlet pipe (8) through a tee joint, one end, far away from the water outlet pipe (8), of the cooling pipe (9) extends into an inner cavity of the cooling tower (1) through the top of the left side wall of the cooling tower (1), atomizing nozzles (10) are uniformly arranged at the top of one end, extending into the cooling tower (1), of the water outlet pipe (8), a water circulating pump (11) is arranged on the cooling pipe (9), and a waste water outlet pipe (12) is arranged at the bottom;

the adsorption tank (2) is divided into a clinker chamber (13) at the left side and an activated carbon chamber (14) at the right side by a partition plate in the middle, a first feed inlet (15) and a second feed inlet (16) are arranged on the left side and the right side of the top of the adsorption tank (2), a stirring motor (17) is arranged on the left side wall of the adsorption tank (2), a stirring shaft (18) is arranged at the power output end on the right side of the stirring motor (17), and the stirring shaft (18) extends into the calcined lime chamber (13) and the activated carbon chamber (14), the outer walls of one ends of the stirring shaft (18) extending into the calcined lime chamber (13) and the activated carbon chamber (14) are respectively provided with a dust raising plate (19), the middle of the top of the adsorption tank (2) is provided with a connecting pipe (20), and the air inlet and the air outlet of the connecting pipe (20) are respectively communicated with the calcined lime chamber (13) and the active carbon chamber (14), a first discharge pipe (21) and a second discharge pipe (22) are arranged on the left side and the right side of the bottom of the adsorption tank (2);

spray column (3) left side wall is provided with alkali liquor and advances pipe (23), the right side wall bottom of spray column (3) is provided with neutralization pipe (24), and the top drain pipe of neutralization pipe (24) stretches into the inner chamber of spray column (3), the one end bottom that neutralization pipe (24) stretched into spray column (3) is provided with alkali liquor shower nozzle (25), be provided with alkali liquor circulating pump (26) on neutralization pipe (24), the inner chamber top of spray column (3) is provided with defroster (27), the top of spray column (3) is provided with gas vent (28), the bottom of spray column (3) is provided with waste liquid exit tube (29).

2. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: the water inlet pipe (7), the cooling pipe (9), the waste water outlet pipe (12), the alkali liquor inlet pipe (23), the neutralizing pipe (24) and the waste liquid outlet pipe (29) are all provided with valves for liquid.

3. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: and the first feeding hole (15) and the second feeding hole (16) are both in screwed connection with sealing covers (30).

4. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: and solid valves are arranged on the first discharging pipe (21) and the second discharging pipe (22).

5. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: the connecting pipe (20) is in an inverted U shape.

6. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: the slaked lime in the slaked lime chamber (13) and the activated carbon in the activated carbon chamber (14) are both powdery fine particles.

7. The hazardous waste incineration line smoke exhaust device according to claim 1, wherein: the alkali liquor in the spray tower (3) is sodium hydroxide solution.

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