CN218510904U - Hazardous waste burns waste heat of flue gas recovery clean system - Google Patents
Hazardous waste burns waste heat of flue gas recovery clean system Download PDFInfo
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- CN218510904U CN218510904U CN202222843894.3U CN202222843894U CN218510904U CN 218510904 U CN218510904 U CN 218510904U CN 202222843894 U CN202222843894 U CN 202222843894U CN 218510904 U CN218510904 U CN 218510904U
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- flue gas
- heat recovery
- gas pipeline
- deacidification tower
- purification system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model belongs to the technical field of flue gas purification, in particular to a hazardous waste incineration flue gas waste heat recovery and purification system, which comprises an incinerator, a deacidification tower, a desulphurization device, a dust remover and a chimney, which are sequentially communicated through a flue gas pipeline; a heat recovery device is arranged close to the inner wall of the flue gas pipeline of the incinerator, a second ejector is arranged at the top of the deacidification tower, the first ejector extends into the flue gas pipeline, and the second ejector extends into the deacidification tower; the heat recovery device is used for absorbing the heat of the flue gas to heat flowing water. The utility model discloses a flue gas pipeline internally mounted who is close to burning furnace has heat recovery unit, recycles the flue gas heat of high temperature for the dangerous waste flue gas of high temperature directly transmits the heat for the homothermal section of thick bamboo, then realizes heating the circulation water in the heating chamber, has realized the thermal recycle of flue gas.
Description
Technical Field
The utility model belongs to the technical field of flue gas purification, in particular to hazardous waste burns waste heat from flue gas recovery clean system.
Background
Hazardous waste generally refers to solid waste that is corrosive, toxic, or flammable; the solid wastes are crushed and then burnt, the traditional hazardous wastes are burnt in a rotary kiln to generate flue gas containing a large amount of acid gases such as hydrogen chloride, sulfur dioxide, hydrogen fluoride and the like, on one hand, the flue gas needs to be purified, and on the other hand, the high-temperature flue gas can be subjected to heat recovery.
In the prior art, the heat exchanger is used for collecting the heat of the flue gas, before heat exchange, in order to prevent generation of dioxin, the flue gas needs to be quenched, namely, the flue gas at about 800 ℃ is cooled to 150-200 ℃ in one second and then is subjected to heat exchange, in the process, the heat is taken away by quenching equipment, and the heat exchanger also has heat loss, so that the heat exchanger can only collect a small part of the heat of the flue gas.
Therefore, the improvement of the utilization rate of the heat of the hazardous waste flue gas is a technical problem which needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not thorough defect of particulate matter purification in the flue gas among the prior art, provide a hazardous waste burns flue gas waste heat recovery clean system.
The utility model provides a hazardous waste incineration flue gas waste heat recovery and purification system, which comprises an incinerator, a deacidification tower, a desulfurization device, an electrostatic precipitator and a chimney which are sequentially communicated through a flue gas pipeline;
a heat recovery device is arranged close to the inner wall of the flue gas pipeline of the incinerator, a plurality of first ejectors are arranged on the flue gas pipeline between the heat recovery device and the deacidification tower, a second ejector is arranged at the top of the deacidification tower, the first ejectors extend into the flue gas pipeline, and the second ejectors extend into the deacidification tower;
the heat recovery device is used for absorbing the heat of the flue gas to heat the flowing water.
The further scheme is that the heat recovery device comprises a cylindrical heating cavity, and the heating cavity is arranged in the flue gas pipeline and fixedly connected with the inner wall of the flue gas pipeline;
the surface of the heating cavity is provided with a water inlet connector and a water outlet connector, the water inlet connector is used for connecting an external circulating water inlet pipe, and the water outlet connector is used for connecting an external circulating water outlet pipe;
the water inlet joint and the water outlet joint are respectively positioned at two ends of the heating cavity, and the water inlet joint and the water outlet joint respectively penetrate through the outer wall of the flue gas pipeline.
The heating cavity is internally provided with a spiral guide plate, and the inner wall of the spiral guide plate is fixedly connected with the inner wall of the heating cavity.
The first ejector is connected with an ammonia water storage tank and used for ejecting ammonia water into the flue gas pipeline;
the second injector is connected with the lime slurry storage tank and used for injecting the lime slurry into the deacidification tower.
The further scheme is that a back flushing device is arranged at the bottom of the deacidification tower and is communicated with the bottom of the deacidification tower through a pipeline.
In a further scheme, the back blowing device is a fan.
The further proposal is that the dust remover comprises a bag-type dust remover and an electrostatic dust remover;
the bag-type dust collector is positioned between the deacidification tower and the desulfurization device, the flue gas pipeline is respectively communicated with the deacidification tower and the desulfurization device, the electrostatic dust collector is positioned between the desulfurization device and the chimney, and the flue gas pipeline is respectively communicated with the desulfurization device and the chimney.
The further scheme is that a heating device is further arranged between the electrostatic dust collector and the chimney, an inlet of the heating device is communicated with the electrostatic dust collector through a flue gas pipeline, and an outlet of the heating device is communicated with the chimney through a flue gas pipeline.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a flue gas pipeline internally mounted who is close to burning furnace has heat recovery unit, recycles the flue gas heat of high temperature for the dangerous waste flue gas of high temperature directly transmits the heat for the homothermal section of thick bamboo, then realizes heating the circulation water in the heating chamber, has realized the thermal recycle of flue gas.
The utility model discloses an aqueous ammonia sprayer and lime slurry sprayer have been set up, and set up the blowback device bottom the deacidification tower, the area of contact of flue gas and purifying reagent has further been increased, particularly, the aqueous ammonia sprayer sprays the aqueous ammonia to the flue gas pipeline in, make nitrogen oxide in the flue gas and aqueous ammonia (become the ammonia after the aqueous ammonia is heated) selective reaction, get rid of the nitrogen oxide in the danger exhaust gas, spray the deacidification tower with the lime slurry through the lime slurry sprayer, and through the aeration of blowback device, acidic gas such as desorption hydrogen chloride and sulfur dioxide.
The utility model discloses set up the two-stage and removed dust, sack cleaner and electrostatic precipitator respectively, wherein, the sack cleaner removes dust to the flue gas after deacidification handles, and collects the purification to heavy metal and dioxin in the flue gas through the filter cake layer of sack cleaner, and electrostatic precipitator removes dust to the flue gas after the desulfurization is handled for separate out dust, liquid drop from the flue gas, further improve dust removal effect.
Drawings
The following drawings are merely illustrative and explanatory of the invention and are not intended to limit the scope of the invention, wherein:
FIG. 1: the utility model is a schematic diagram of a connection structure;
FIG. 2: the structure schematic diagram of the heat recovery device;
FIG. 3: a schematic diagram of a spiral flow deflector structure;
in the figure: 1. an incinerator; 2. a flue gas duct; 3. a heat recovery device; 3.1, a water inlet joint; 3.2, a water outlet joint; 3.3, a soaking cylinder; 3.4, a spiral guide plate; 3.5, heating the cavity; 4. a first ejector; 5. a back flushing device; 6. a deacidification tower; 7. a second ejector; 8. a bag-type dust collector; 9. A desulfurization unit; 10. an electrostatic precipitator; 11. a heating device; 12. and (4) a chimney.
Detailed Description
In order to make the objects, technical solutions, design methods, and advantages of the present invention more clear, the present invention will be further described in detail by the following embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a hazardous waste incineration flue gas waste heat recovery and purification system, which comprises an incinerator 1, a deacidification tower 6, a desulphurization device 9, an electrostatic precipitator 10 and a chimney 12 which are sequentially communicated through a flue gas pipeline 2; a heat recovery device 3 is installed on the inner wall of a flue gas pipeline 2 close to the incinerator 1, a plurality of first ejectors 4 are installed on the flue gas pipeline 2 between the heat recovery device 3 and a deacidification tower 6, a second ejector 7 is arranged at the top of the deacidification tower 6, the first ejectors 4 extend into the flue gas pipeline 2, and the second ejectors 7 extend into the deacidification tower 6.
As shown in fig. 2, the heat recovery device 3 includes a cylindrical heating cavity 3.5, and the heating cavity 3.5 is arranged inside the flue gas duct 2 and is fixedly connected to the inner wall of the flue gas duct 2;
a water inlet connector 3.1 and a water outlet connector 3.2 are arranged on the surface of the heating cavity 3.5, the water inlet connector 3.1 is used for connecting an external circulating water inlet pipe, and the water outlet connector 3.2 is used for connecting an external circulating water outlet pipe;
the water inlet connector 3.1 and the water outlet connector 3.2 are respectively positioned at two ends of the heating cavity 3.5, and the water inlet connector 3.1 and the water outlet connector 3.2 respectively penetrate through the outer wall of the flue gas pipeline 2.
As shown in fig. 3, in order to heat the convection water more efficiently, a spiral guide plate 3.4 is arranged inside a heating cavity 3.5, and the inner wall of the spiral guide plate 3.4 is fixedly connected with the inner wall of the heating cavity 3.5
In order to further increase the contact area between the flue gas and the purifying reagent, a plurality of groups of first injectors 4 are arranged on the flue gas pipeline 2 between the quenching device 5 and the deacidification tower 6, and the first injectors 4 are connected with an ammonia water storage tank and used for injecting ammonia water into the flue gas pipeline 2;
the top of the deacidification tower 6 is provided with a second ejector 7, and the second ejector 7 is connected with a lime slurry storage tank and used for ejecting lime slurry into the inside of the deacidification tower 6.
In order to accelerate the reaction of acid gas and lime slurry in the flue gas, this application has still set up blowback device 5 in deacidification tower 6 bottoms, the fan promptly, the fan pass through the pipeline with 6 bottoms intercommunication in deacidification tower play the effect of aeration, increase the area of contact of flue gas and lime slurry.
In the above, the dust collector includes a bag dust collector 8 and an electrostatic dust collector 10;
the bag-type dust collector 8 is positioned between the deacidification tower 6 and the desulphurization device 9, the flue gas pipeline 2 is respectively communicated with the deacidification tower 6 and the desulphurization device 9, the electrostatic dust collector 10 is positioned between the desulphurization device 9 and the chimney 12, and the flue gas pipeline 2 is respectively communicated with the desulphurization device 9 and the chimney 12.
A heating device 11 is further arranged between the electrostatic dust collector 10 and the chimney 12, an inlet of the heating device 11 is communicated with the electrostatic dust collector 10 through a flue gas pipeline 2, and an outlet of the heating device 11 is communicated with the chimney 12 through the flue gas pipeline 2. The heating device 11 is used for the last purification of the flue gas emission, heats the flue gas after dust removal and then discharges the flue gas to the atmosphere through the chimney 12, so that the discharged flue gas is far lower than the emission standard.
In this application embodiment, first sprayer 4, second sprayer 7, sack cleaner 8, electrostatic precipitator 10, desulphurization unit 10 and heating device 11 all realize intelligent control through external controlgear automatic control, for example through PLC able to programme, it needs to notice that external controlgear and the sack cleaner, desulphurization unit and heating device in this application all adopt prior art, and wherein, the sack cleaner that has the filter cake layer is chooseed for use to the sack cleaner.
The utility model discloses a flue gas purification process does: before the hazardous waste is incinerated, the amount of a dioxin inhibitor is calculated according to the prior art, and the dioxin inhibitor and the hazardous waste are incinerated together, wherein the dioxin inhibitor is a common dioxin inhibitor in the market, such as the dioxin inhibitor sold by Guangzhou Paian technology company, flue gas in an incinerator 1 enters a heat recovery device 3 through a flue gas pipeline 2 to heat flowing water, the heated flowing water can be used for industrial soft water or domestic water, the heat-exchanged flue gas sequentially and selectively reacts with ammonia water to remove nitrogen oxides in the flue gas, the nitrogen oxides are reflected with lime slurry to remove acidic gas, then the flue gas enters a bag dust remover 8 to remove dust for the first time, the dioxin and heavy metals are collected through a filter cake layer, the flue gas after desulfurization enters an electrostatic dust remover 10 to remove dust for the second time, and the flue gas after heating is discharged to the atmosphere through a chimney 12.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. A hazardous waste incineration flue gas waste heat recovery and purification system is characterized by comprising an incinerator (1), a deacidification tower (6), a desulphurization device (9), an electrostatic precipitator (10) and a chimney (12) which are sequentially communicated through a flue gas pipeline (2);
a heat recovery device (3) is installed on the inner wall of a flue gas pipeline (2) close to the incinerator (1), a plurality of first ejectors (4) are installed on the flue gas pipeline (2) between the heat recovery device (3) and the deacidification tower (6), a second ejector (7) is arranged at the top of the deacidification tower (6), the first ejectors (4) extend into the flue gas pipeline (2), and the second ejector (7) extends into the deacidification tower (6);
the heat recovery device (3) is used for absorbing the heat of the flue gas to heat flowing water.
2. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 1, wherein the heat recovery device (3) comprises a cylindrical heating cavity (3.5), and the heating cavity (3.5) is arranged inside the flue gas pipeline (2) and is fixedly connected with the inner wall of the flue gas pipeline (2);
the surface of the heating cavity (3.5) is provided with a water inlet connector (3.1) and a water outlet connector (3.2), the water inlet connector (3.1) is used for connecting an external circulating water inlet pipe, and the water outlet connector (3.2) is used for connecting an external circulating water outlet pipe;
and the water inlet joint (3.1) and the water outlet joint (3.2) are respectively positioned at two ends of the heating cavity (3.5), and the water inlet joint (3.1) and the water outlet joint (3.2) respectively penetrate through the outer wall of the flue gas pipeline (2).
3. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 2, wherein a spiral guide plate (3.4) is arranged inside the heating cavity (3.5), and the inner wall of the spiral guide plate (3.4) is fixedly connected with the inner wall of the heating cavity (3.5).
4. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 1, wherein the first injector (4) is connected with an ammonia water storage tank for injecting ammonia water into the flue gas pipeline (2);
the second ejector (7) is connected with a lime slurry storage tank and used for ejecting lime slurry to the inside of the deacidification tower (6).
5. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 4, wherein a back-blowing device (5) is arranged at the bottom of the deacidification tower (6), and the back-blowing device (5) is communicated with the bottom of the deacidification tower (6) through a pipeline.
6. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 5, wherein the back-blowing device (5) is a fan.
7. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 1, wherein the system further comprises a bag-type dust collector (8);
the bag-type dust collector (8) is located between the deacidification tower (6) and the desulfurization device (9), the flue gas pipeline (2) is communicated with the deacidification tower (6) and the desulfurization device (9) respectively, the electrostatic dust collector (10) is located between the desulfurization device (9) and the chimney (12), and the flue gas pipeline (2) is communicated with the desulfurization device (9) and the chimney (12) respectively.
8. The hazardous waste incineration flue gas waste heat recovery and purification system according to claim 7, wherein a heating device (11) is further arranged between the electrostatic precipitator (10) and the chimney (12), an inlet of the heating device (11) is communicated with the electrostatic precipitator (10) through a flue gas pipe (2), and an outlet of the heating device (11) is communicated with the chimney (12) through the flue gas pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843894.3U CN218510904U (en) | 2022-10-26 | 2022-10-26 | Hazardous waste burns waste heat of flue gas recovery clean system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843894.3U CN218510904U (en) | 2022-10-26 | 2022-10-26 | Hazardous waste burns waste heat of flue gas recovery clean system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218510904U true CN218510904U (en) | 2023-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222843894.3U Active CN218510904U (en) | 2022-10-26 | 2022-10-26 | Hazardous waste burns waste heat of flue gas recovery clean system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218510904U (en) |
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2022
- 2022-10-26 CN CN202222843894.3U patent/CN218510904U/en active Active
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