CN210356679U - Flue gas purification equipment for reducing hazardous waste incineration flue gas harmful substances - Google Patents

Abstract

The utility model provides a reduce hazardous waste incineration flue gas's gas cleaning equipment, including the gas cleaning tower, dry lime feeding device, active carbon feeding device, first mixed spray tube, the mixed spray tube of second, the compressed air storage tank, dry lime feeding device's exit end and first mixed spray tube intercommunication, first active carbon feeding device's exit end and the mixed spray tube intercommunication of second, first mixed spray tube, the mixed spray tube of second all passes through the pipeline intercommunication with the compressed air storage tank, first mixed spray tube, the exit end of the mixed spray tube of second and gas cleaning tower's inside intercommunication. The utility model discloses a flue gas purification tower forms the spiral shell screwing in of flue gas in flue gas purification tower and rises the state, makes the flue gas and the dry lime, active carbon intensive mixing, the contact of fully scattering to particulate matter, acid gas and the organic hypertoxicity pollutant that contain in the flue gas are detached with the efficient more, thereby will burn the flue gas purification after, make the fume emission accord with emission standard.

Description

Flue gas purification equipment for reducing hazardous waste incineration flue gas harmful substances

Technical Field

The utility model relates to a hazardous waste burns equipment technical field, especially relates to a reduce hazardous waste burns harmful gas cleaning equipment of flue gas.

Background

At present, hazardous wastes are mainly treated by incineration, a large amount of flue gas is generated after the hazardous wastes are incinerated, the flue gas discharged after incineration contains particulate matters (dust), acid gases (HCl, HF, SOx, NOx and the like), heavy metals (Hg, Pb, Cr and the like) and organic virulent pollutants (dioxin, furan and the like), and in order to prevent the hazardous wastes from generating secondary pollution to the environment in the incineration treatment process, the flue gas emission meets the emission standard, strict measures are required to be taken, and the particulate matters, the acid gases and the organic virulent pollutants in the discharged flue gas are reduced.

Disclosure of Invention

In view of the above, there is a need for a flue gas cleaning device for reducing hazardous waste incineration flue gas.

The utility model provides a reduce hazardous waste incineration flue gas's gas cleaning equipment, including the gas cleaning tower, dry lime feeding device, active carbon feeding device, first mixed spray tube, the mixed spray tube of second, the compressed air storage tank, dry lime feeding device's exit end and first mixed spray tube intercommunication, first active carbon feeding device's exit end and the mixed spray tube intercommunication of second, first mixed spray tube, the mixed spray tube of second all passes through the pipeline intercommunication with the compressed air storage tank, first mixed spray tube, the exit end of the mixed spray tube of second and gas cleaning tower's inside intercommunication.

Preferably, the flue gas purification tower includes flourishing ash bin, flue gas whirl pipeline, flue gas purification pipeline, and flue gas purification pipeline vertical fixation sets up in the top of flourishing ash bin, and flue gas whirl pipeline is located inside the flue gas purification pipeline, and leaves the interval between flue gas whirl pipeline's outer wall and the inner wall of flue gas purification pipeline, makes to form the cavity between flue gas whirl pipeline and the flue gas purification pipeline, and flue gas whirl pipeline's exit end and the inside intercommunication of flue gas purification pipeline.

Preferably, the top of the ash containing bin is provided with an ash leakage hole, and the ash leakage hole communicates a cavity formed between the flue gas rotational flow conveying pipeline and the flue gas purification pipeline with the ash containing bin.

Preferably, the ash leakage holes are circumferentially distributed in an equidistant annular shape along a cavity formed between the flue gas rotational flow conveying pipeline and the flue gas purification pipeline.

Preferably, flue gas whirl pipeline includes flue gas buffer tube way, flue gas whirl pipe, flue gas buffer tube way vertical fixation sets up in the top that holds the ash bin, flue gas buffer tube way's lower part is provided with the flue gas import, the flue gas import extends to flue gas buffer tube way outside to pass the flue gas purification pipeline, the inside one end that is close to holding the ash bin of flue gas buffer tube way is fixed to be provided with and connects the hawk, connect the hawk to pass through the inside intercommunication in pipeline and the ash bin, the fixed top that sets up at flue gas buffer tube way of flue gas whirl pipe, the one end and the flue gas buffer tube way intercommunication of flue gas whirl pipe, the other end of flue gas whirl pipe opens, and communicate with the flue gas purification.

Preferably, the inner wall of the flue gas cyclone tube is fixedly provided with a drainage plate along the axial direction of the flue gas cyclone tube at equal intervals, and the drainage plate is wave-shaped.

Preferably, the flue gas purification pipeline comprises a smoke exhaust pipe, a mixing purification pipe and an ash slag drainage pipe, wherein the ash slag drainage pipe is vertically and fixedly arranged above the ash containing bin and surrounds the flue gas cyclone pipe inside the ash slag drainage pipe, the mixing purification pipe is vertically and fixedly arranged above the ash slag drainage pipe and is communicated with the ash slag drainage pipe, and the smoke exhaust pipe is vertically and fixedly arranged above the mixing purification pipe and is communicated with the inside of the mixing purification pipe.

Preferably, first mixed spray tube includes first trunk line, first auxiliary pipeline, and the entrance point of first trunk line passes through pipeline and compressed air storage tank intercommunication, the exit end of first trunk line and the inside intercommunication of mixing the purge tube, the one end and the active carbon feeding device's of first auxiliary pipeline exit end intercommunication, the other end and the first trunk line intercommunication of first auxiliary pipeline, the mixed spray tube of second includes second trunk line, second auxiliary pipeline, and the entrance point of second trunk line passes through pipeline and compressed air storage tank intercommunication, the exit end and the inside intercommunication of mixing the purge tube of second trunk line, the one end and the exit end intercommunication of dry lime feeding device of second auxiliary pipeline, the other end and the second trunk line intercommunication of second auxiliary pipeline.

Preferably, first mixed spray tube, second mix the spray tube and all be "people" font, and the exit end of first trunk line, second trunk line all is provided with the shower nozzle.

Preferably, dry lime feeding device includes that dry lime holds feed bin, dry lime conveyer, and the entry end of dry lime conveyer passes through the bottom intercommunication in pipeline and the dry lime holds feed bin, and the exit end of dry lime conveyer passes through the entry end intercommunication of pipeline and the vice pipeline of second, and active carbon feeding device includes that active carbon holds feed bin, active carbon conveyer, and the entry end of active carbon conveyer passes through the bottom intercommunication in pipeline and the active carbon holds feed bin, and the exit end of active carbon conveyer passes through the entry end intercommunication of pipeline and first pair pipeline.

The utility model adopts the above technical scheme, its beneficial effect lies in: the utility model comprises a flue gas purification tower, a dry lime supply device, an active carbon supply device, a first mixing spray pipe, a second mixing spray pipe and a compressed air storage tank, wherein the outlet end of the dry lime supply device is communicated with the first mixing spray pipe, the outlet end of the first active carbon supply device is communicated with the second mixing spray pipe, the first mixing spray pipe and the second mixing spray pipe are communicated with the compressed air storage tank through pipelines, and the outlet ends of the first mixing spray pipe and the second mixing spray pipe are communicated with the inside of the flue gas purification tower; the flue gas that burns the production enters into the gas cleaning tower from the bottom of gas cleaning tower through the pipeline in, and form the spiral rising state in the gas cleaning tower, make the flue gas fully disperse, compressed air lets in first mixed spray tube, make the active carbon fully blow out by compressed air in first mixed spray tube, and final even spraying is in the gas cleaning tower, with particulate matter and the organic severe toxicity pollutant intensive mixing contact in the flue gas, thereby utilize particulate matter and the organic severe toxicity pollutant in the active carbon absorption flue gas, compressed air lets in the second mixed spray tube, make dry lime fully blow out by compressed air in the second mixed spray tube, and final even spraying is in the gas cleaning tower, with the acid gas intensive mixing contact in the flue gas, thereby utilize dry lime absorption, the acid gas in the flue gas and. The utility model discloses a flue gas purification tower forms the spiral-up state with the flue gas in the flue gas purification tower, makes the flue gas disperse in the flue gas purification tower to with the dry lime, the active carbon intensive mixing, the contact that spray out, thereby make dry lime, active carbon can be more the efficient with particulate matter, acid gas and the organic hypertoxicity pollutant that contains in the flue gas detach, thereby will burn the gas cleaning after, make the fume emission accord with emission standard.

Drawings

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

Fig. 2 is a schematic sectional structure view of fig. 1.

Fig. 3 is a schematic structural diagram of the flue gas purification tower of the present invention.

Fig. 4 is a schematic cross-sectional structure of fig. 3.

In the figure: the flue gas purification tower 10, the ash containing bin 101, the ash leakage hole 1011, the flue gas rotational flow conveying pipeline 102, the flue gas buffer pipeline 1021, the flue gas inlet 10211, the ash receiving plate 10212, the flue gas rotational flow pipe 1022, the flow guide plate 10221, the flue gas purification pipeline 103, the smoke exhaust pipe 1031, the mixing purification pipe 1032, the ash and slag drainage pipe 1033, the dry lime supply device 20, the dry lime containing bin 201, the dry lime conveyor 202, the activated carbon supply device 30, the activated carbon containing bin 301, the activated carbon conveyor 302, the first mixing spray pipe 40, the first auxiliary pipeline 401, the first auxiliary pipeline 402, the second mixing spray pipe 50, the second main pipeline 501, the second auxiliary pipeline 502 and the compressed air storage tank 60.

Detailed Description

Referring to fig. 1 to 4, an embodiment of the present invention provides a flue gas purification apparatus for reducing hazardous waste incineration flue gas, including a flue gas purification tower 10, a dry lime supply device 20, an activated carbon supply device 30, a first mixing nozzle 40, a second mixing nozzle 50, a compressed air storage tank 60, an outlet end of the dry lime supply device 20 is communicated with the first mixing nozzle 40, an outlet end of the first activated carbon supply device 30 is communicated with the second mixing nozzle 50, the first mixing nozzle 40 and the second mixing nozzle 50 are communicated with the compressed air storage tank 60 through a pipeline, and outlet ends of the first mixing nozzle 40 and the second mixing nozzle 50 are communicated with the inside of the flue gas purification tower 10. The flue gas generated by incineration enters the flue gas purification tower 10 from the bottom of the flue gas purification tower 10 through a pipeline, and forms a spiral rising state in the flue gas purification tower 10 to fully disperse the flue gas, the compressed air is introduced into the first mixing spray pipe 40 to fully blow and disperse the activated carbon in the first mixing spray pipe 40 by the compressed air, and finally uniformly sprayed into the flue gas purification tower 10 to be fully mixed and contacted with particulate matters and organic highly toxic pollutants in the flue gas, thereby absorbing the particulate matters and organic highly toxic pollutants in the flue gas by using the active carbon, introducing the compressed air into the second mixing spray pipe 50, fully blowing and dispersing the dry lime in the second mixing spray pipe 50 by the compressed air, finally uniformly spraying the dry lime in the flue gas purification tower 10, and the lime is fully mixed and contacted with the acid gas in the flue gas, so that the acid gas in the flue gas is absorbed and neutralized by the dry lime.

The height of the flue gas purification tower 10 is 9500mm, the flue gas purification tower 10 comprises an ash containing bin 101, a flue gas cyclone conveying pipeline 102 and a flue gas purification pipeline 103, the flue gas purification pipeline 103 is vertically and fixedly arranged above the ash containing bin 101, the height of the ash containing bin 101 is 3000mm, a slag discharge door for cleaning ash and slag is arranged on the side surface of the ash containing bin 101 close to the bottom, when the ash and slag need to be cleaned, the slag discharge door can be opened to clean the accumulated ash and slag, the flue gas cyclone conveying pipeline 102 is vertically and fixedly arranged above the ash containing bin 101, the flue gas cyclone conveying pipeline 102 is positioned inside the flue gas purification pipeline 103, a space is reserved between the outer wall of the flue gas cyclone conveying pipeline 102 and the inner wall of the flue gas purification pipeline 103, a cavity is formed between the flue gas cyclone conveying pipeline 102 and the flue gas purification pipeline 103, and thus large-particle dust purified by the flue gas purification pipeline 103 can settle downwards along the cavity, the outlet end of the flue gas cyclone conveying pipe 102 is communicated with the interior of the flue gas cleaning pipe 103.

The top of the ash containing bin 101 is provided with ash leaking holes 1011, and the ash leaking holes 1011 are circumferentially distributed in an equidistant annular shape along a cavity formed between the flue gas cyclone conveying pipeline 102 and the flue gas purification pipeline 103. The ash leakage hole 1011 communicates the cavity formed between the flue gas cyclone conveying pipeline 102 and the flue gas purification pipeline 103 with the ash containing bin 101, so that large particle dust which is settled falls into the ash containing bin 101.

The flue gas cyclone conveying pipeline 102 comprises a flue gas buffer pipeline 1021 and a flue gas cyclone pipe 1022, wherein the diameter of the flue gas buffer pipeline 1021 is 800mm, the height of the flue gas buffer pipeline 1021 is 2000mm, the flue gas buffer pipeline 1021 is vertically and fixedly arranged above the ash containing bin 101, the lower part of the flue gas buffer pipeline 1021 is provided with a flue gas inlet 10211, the flue gas inlet 10211 extends towards the outside of the flue gas buffer pipeline 1021 and penetrates through the flue gas purification pipeline 103, one end, close to the ash containing bin 101, inside the flue gas buffer pipeline 1021 is fixedly provided with an ash receiving plate 10212, the ash receiving plate 10212 is communicated with the interior of the ash containing bin 101 through a pipeline, so that dust entering the interior of the flue gas buffer pipeline 1021 falls into the interior of the ash containing bin 101, the diameter of the flue gas cyclone pipe 1022 is 600mm, the height of the flue gas cyclone pipe 1022 is 1500mm, the flue gas cyclone pipe 1022 is fixedly arranged above the flue gas buffer pipeline 1021, one end, and is in communication with the flue gas cleaning duct 103. The inner wall of the flue gas cyclone tube 1022 is fixedly provided with a flow guide plate 10221 at equal intervals along the axial direction of the flue gas cyclone tube 1022, and the flow guide plate 10221 is wavy. Under the effect of drainage board 10221, the flue gas that enters into flue gas cyclone 1022 forms the heliciform and rises the state at the in-process that upwards flows, makes the flue gas fully disperse, is favorable to like this particulate matter, acid gas and the organic hypertoxic pollutant in the flue gas fully to mix, contact with dry lime, active carbon, is favorable to purifying the flue gas.

The flue gas purification pipeline 103 comprises a smoke exhaust pipe 1031, a mixing purification pipe 1032 and an ash residue drainage pipe 1033, the ash residue drainage pipe 1033 is vertically and fixedly arranged above the ash containing bin 101, the flue gas swirling flow pipe 1022 is surrounded in the ash residue drainage pipe 1033, the diameter of the mixing purification pipe 1032 is 1200mm, the height of the mixing purification pipe is 2500mm, the mixing purification pipe 1032 is vertically and fixedly arranged above the ash residue drainage pipe 1033 and is communicated with the ash residue drainage pipe 1033, and the smoke exhaust pipe 1031 is vertically and fixedly arranged above the mixing purification pipe 1032 and is communicated with the interior of the mixing purification pipe 1032.

The first mixing nozzle 40 includes a first main pipe 401, a first secondary pipe 402, the inlet end of the first main pipe 401 is communicated with the compressed air storage tank 60 through a pipe, the outlet end of the first main pipe 401 is communicated with the inside of the mixing purification pipe 1032, one end of the first secondary pipe 402 is communicated with the outlet end of the activated carbon supply device 30, the other end of the first secondary pipe 402 is communicated with the first main pipe 401, the second mixing nozzle 50 includes a second main pipe 501 and a second secondary pipe 502, the inlet end of the second main pipe 501 is communicated with the compressed air storage tank 60 through a pipe, the outlet end of the second main pipe 501 is communicated with the inside of the mixing purification pipe 1032, one end of the second secondary pipe 502 is communicated with the outlet end of the dry lime supply device 20, and the other end of the second secondary pipe 502 is communicated with the second main pipe 501. The first mixing nozzle 40 and the second mixing nozzle 50 are both in a shape like a Chinese character 'ren', and the outlet ends of the first main pipeline 401 and the second main pipeline 501 are both provided with spray heads.

The dry lime feeding device 20 comprises a dry lime containing bin 201 and a dry lime conveyor 202, wherein the inlet end of the dry lime conveyor 202 is communicated with the bottom of the dry lime containing bin 201 through a pipeline, the outlet end of the dry lime conveyor 202 is communicated with the inlet end of a second secondary pipeline 502 through a pipeline, the active carbon feeding device 30 comprises an active carbon containing bin 301 and an active carbon conveyor 302, the inlet end of the active carbon conveyor 302 is communicated with the bottom of the active carbon containing bin 301 through a pipeline, and the outlet end of the active carbon conveyor 302 is communicated with the inlet end of a first secondary pipeline 402 through a pipeline. Wherein the dry lime conveyor 202 and the activated carbon conveyor 302 are both screw conveyors.

The utility model discloses a working method as follows: the incinerated flue gas enters the flue gas buffering pipeline 1021 from a flue gas inlet 10211 arranged at the lower part of the flue gas buffering pipeline 1021, and flows upwards along the inside of the flue gas buffering pipeline 1021, when the flue gas enters the flue gas swirling flow pipe 1022, the flow velocity of the flue gas is accelerated under the action of a flow guide plate 10221, a spiral rising state is formed at the outlet end of the flue gas swirling flow pipe 1022, then the flue gas enters the mixing purification pipe 1032, the flue gas at the moment rises spirally in the mixing purification pipe 1032 and rolls continuously, and is fully mixed and contacted with sprayed dry lime and activated carbon, so that the dry lime neutralizes and purifies acidic gas in the flue gas, the activated carbon absorbs particulate matters and organic highly toxic pollutants in the purified flue gas, the dry lime absorbing harmful substances in the flue gas and the activated carbon fall into the ash containing bin 103101 through the ash residue drainage pipe 1033 to be collected, and the purified flue gas is discharged to a dust collector through the smoke discharge pipe 1031 to be subjected to dust collection treatment, thereby purifying harmful substances in the incineration flue gas and enabling the emission of the incineration flue gas to meet the standard.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a reduce hazardous waste and burn flue gas clarification plant of harmful substance which characterized in that: including gas cleaning tower, dry lime feeding device, active carbon feeding device, first mixed spray tube, the mixed spray tube of second, the compressed air storage tank, dry lime feeding device's exit end and the mixed spray tube intercommunication of first mixed spray tube, first active carbon feeding device's exit end and the mixed spray tube intercommunication of second, first mixed spray tube, the mixed spray tube of second all passes through the pipeline intercommunication with the compressed air storage tank, first mixed spray tube, the exit end of the mixed spray tube of second and gas cleaning tower's inside intercommunication.

2. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 1, characterized in that: the flue gas purification tower comprises an ash containing bin, a flue gas rotational flow conveying pipeline and a flue gas purification pipeline, wherein the flue gas purification pipeline is vertically and fixedly arranged above the ash containing bin, the flue gas rotational flow conveying pipeline is located inside the flue gas purification pipeline, an interval is reserved between the outer wall of the flue gas rotational flow conveying pipeline and the inner wall of the flue gas purification pipeline, a cavity is formed between the flue gas rotational flow conveying pipeline and the flue gas purification pipeline, and the outlet end of the flue gas rotational flow conveying pipeline is communicated with the inside of the flue gas purification pipeline.

3. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 2, characterized in that: and the top of the ash containing bin is provided with an ash leakage hole, and the ash leakage hole communicates a cavity formed between the flue gas rotational flow conveying pipeline and the flue gas purification pipeline with the ash containing bin.

4. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 3, characterized in that: the ash leakage holes are circumferentially distributed in an equidistant annular mode along a cavity formed between the smoke rotational flow conveying pipeline and the smoke purifying pipeline.

5. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 2, characterized in that: flue gas whirl pipeline includes flue gas buffer tube way, flue gas whirl pipe, flue gas buffer tube way vertical fixation sets up the top in flourishing ash bin, flue gas buffer tube way's lower part is provided with the flue gas import, the flue gas import extends to flue gas buffer tube way outside, and pass the flue gas purification pipeline, the inside one end that is close to flourishing ash bin of flue gas buffer tube way is fixed to be provided with and connects the hawk, connect the hawk to pass through the inside intercommunication in pipeline and flourishing ash bin, the fixed top that sets up at flue gas buffer tube way of flue gas whirl pipe, the one end and the flue gas buffer tube way intercommunication of flue gas whirl pipe, the other end of flue gas whirl pipe opens, and communicate with the flue.

6. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 5, characterized in that: the inner wall of the flue gas cyclone tube is fixedly provided with a drainage plate along the axial direction of the flue gas cyclone tube at equal intervals, and the drainage plate is wave-shaped.

7. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 2, characterized in that: the flue gas purification pipeline comprises a smoke exhaust pipe, a mixed purification pipe and an ash residue drainage pipe, wherein the ash residue drainage pipe is vertically and fixedly arranged above the ash containing bin and surrounds a flue gas cyclone pipe in the ash residue drainage pipe, the mixed purification pipe is vertically and fixedly arranged above the ash residue drainage pipe and communicated with the ash residue drainage pipe, and the smoke exhaust pipe is vertically and fixedly arranged above the mixed purification pipe and communicated with the inside of the mixed purification pipe.

8. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 1, characterized in that: the first mixed spray pipe comprises a first main pipe and a first auxiliary pipe, the inlet end of the first main pipe is communicated with a compressed air storage tank through a pipeline, the outlet end of the first main pipe is communicated with the inside of a mixed purifying pipe, one end of the first auxiliary pipe is communicated with the outlet end of an activated carbon supply device, the other end of the first auxiliary pipe is communicated with the first main pipe, the second mixed spray pipe comprises a second main pipe and a second auxiliary pipe, the inlet end of the second main pipe is communicated with the compressed air storage tank through a pipeline, the outlet end of the second main pipe is communicated with the inside of the mixed purifying pipe, one end of the second auxiliary pipe is communicated with the outlet end of a dry lime supply device, and the other end of the second auxiliary pipe is communicated with the second main pipe.

9. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 8, characterized in that: first mixed spray tube, second mix the spray tube and all are "people" font, and the exit end of first trunk line, second trunk line all is provided with the shower nozzle.

10. The flue gas cleaning apparatus for reducing hazardous waste incineration flue gas hazardous substances according to claim 1, characterized in that: the dry lime feeding device comprises a dry lime containing bin and a dry lime conveyor, the inlet end of the dry lime conveyor is communicated with the bottom of the dry lime containing bin through a pipeline, the outlet end of the dry lime conveyor is communicated with the inlet end of a second auxiliary pipeline through a pipeline, the active carbon feeding device comprises an active carbon containing bin and an active carbon conveyor, the inlet end of the active carbon conveyor is communicated with the bottom of the active carbon containing bin through a pipeline, and the outlet end of the active carbon conveyor is communicated with the inlet end of a first auxiliary pipeline through a pipeline.

Images