Purification device for waste incineration tail gas
By introducing a combustion chamber and a water spray cleaning device into the waste incineration flue gas purification unit, the problems of bag filter clogging and particulate matter emission have been solved, achieving efficient purification of smoke and harmful gases.
Patent Information
- Application Number
- CN202422888398.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The smoke and dust produced after garbage incineration can easily clog bag filters, making replacement and cleaning inconvenient. At the same time, the unburned particulate matter increases the emission of smoke and harmful gases.
A purification device was designed, which includes a combustion chamber, a water spray device, and a decontamination device. The device re-burns incompletely combustible materials through an ignition head, neutralizes acidic gases with an alkaline solution, and removes deposits through water spray and spiral blades, thereby reducing particulate matter emissions.
It effectively reduces bag clogging, lowers the emission of large particulate matter and harmful gases, simplifies the cleaning process, and reduces the frequency of equipment maintenance.
Smart Images
Figure CN223517207U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of garbage incineration equipment, especially relates to a purification device for garbage incineration tail gas. BACKGROUND
[0002] A variety of harmful waste gas is produced in the garbage incineration process, including the particulate matter (smoke dust) that is not completely combusted and cannot be combusted, acid gas (such as CONOX, SO2, HCI, etc.), heavy metals (such as Hg, Cr, Pb, etc.) and organic pollutants (such as dioxins). In order to reduce the harm of these pollutants to the environment and human body, effective treatment measures need to be taken to purify the tail gas of garbage incineration.
[0003] At present, after garbage incineration, the particulate matter smoke dust is directly removed by a bag filter, which will soon cause the bag filter to be blocked, and it is very troublesome to replace and clean the bag filter, and the particulate matter that is not completely combusted is collected together, which will increase the discharge amount of smoke dust and harmful gas. CONTENT OF THE UTILITY MODEL
[0004] In view of the above technical problems, the utility model provides a purification device for garbage incineration tail gas, which solves the problem that the smoke dust produced after garbage incineration is removed by a bag filter, which easily causes the bag filter to be blocked, and it is very troublesome to replace and clean the bag filter, and the particulate matter that is not completely combusted is collected together, which will increase the discharge amount of large particulate smoke dust and harmful gas.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme; including the casing, the inside of the casing is equipped with the storage liquid's cavity, the left side of the cavity is equipped with the combustion chamber, the inside of the combustion chamber is equipped with the igniter, the lower end of the combustion chamber is equipped with the gas inlet, the upper end between the combustion chamber and the cavity is equipped with the curved channel, the top of the cavity is equipped with the water outlet fixedly connected with the casing, the right side of the water outlet is equipped with the gas outlet in communication with the cavity, the top of the gas outlet is in communication with the air pump fixedly connected with the casing.
[0006] Preferably, the casing is equipped with the water spraying device, the water spraying device includes the water pump and the water storage tank fixedly connected with the casing, the water inlet end of the water pump is fixedly connected with the water inlet pipe, the water inlet pipe extends downward to the bottom of the cavity, the water outlet end of the water pump is fixedly connected with the water outlet pipe, the water outlet pipe is in communication with the water storage tank, and the water outlet is in communication with the bottom of the water storage tank.
[0007] Preferably, the water storage tank is fixedly connected with the detachable filter screen, and the filter screen is below the water outlet pipe.
[0008] Preferably, the cavity is provided with a decontamination device, the decontamination device comprises an inclined sewage pipe, the low end of the sewage pipe is arranged at the bottom end of the cavity, the high end of the sewage pipe penetrates to the outside of the shell and is communicated with a sewage outlet, the low end side of the sewage pipe is communicated with a sewage inlet, the inside of the sewage pipe is rotationally connected with a screw rod along the axial direction of the screw rod, the screw rod is provided with a spiral blade matched with the sewage pipe, and the sewage pipe is provided with a motor fixedly connected with the screw rod.
[0009] Preferably, the bottom end of the cavity is V-shaped.
[0010] Preferably, the water outlet is a plurality of nozzles arranged longitudinally and uniformly.
[0011] Preferably, the ignition head is provided with two groups corresponding to the upper and lower parts.
[0012] Compared with the prior art, the beneficial effects of the device are that: the incomplete combustion of combustible substances can be combusted again in the combustion chamber through the ignition head, the discharge amount of large-particle smoke dust is reduced; the particles in the flue gas can be settled and accumulated at the bottom of the cavity through the water spraying device, and the discharge amount of solid smoke dust is further reduced; the sediment accumulated at the bottom of the cavity can be discharged through the decontamination device, compared with the previous bag dust removal, the trouble of long-term replacement and cleaning of the bag is reduced; the sprayed liquid can cool the high-temperature flue gas to reach a suitable treatment temperature; the selected alkaline solution can neutralize the acidic substances in the flue gas, and the discharge amount of acidic substances is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the device, and constitute a part of the specification, and are used to explain the device together with embodiments of the device, and do not constitute a limitation on the device. In the drawings:
[0014] Figure 1 It is the overall structure of the device.
[0015] Figure 2 It is the internal structure of the shell after being longitudinally cut in the device.
[0016] Figure 3 It is a water spraying device in the device.
[0017] Figure 4 It is the first schematic view of the overall structure of the water outlet in the device.
[0018] Figure 5 It is the second schematic view of the overall structure of the water outlet in the device.
[0019] Figure: 1 - shell, 2 - cavity, 3 - combustion chamber, 4 - ignition head, 5 - gas inlet, 6 - curved channel, 7 - water outlet, 8 - gas outlet, 9 - water pump, 10 - water storage tank, 11 - water inlet pipe, 12 - water outlet pipe, 13 - filter screen, 14 - drain pipe, 15 - drain, 16 - sewage inlet, 17 - screw rod, 18 - spiral blade, 19 - motor, 20 - air pump, 21 - nozzle. DETAILED DESCRIPTION
[0020] The utility model will be explained in further detail in combination with the drawings. The drawings are simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the structure related to the utility model.
[0021] Referring to Figures 1-5 The utility model discloses a shell 1 is equipped with the cavity 2 of storing liquid in the inside, the left side of cavity 2 is equipped with combustion chamber 3, is equipped with ignition head 4 in combustion chamber 3, the lower end of combustion chamber 3 is equipped with gas inlet 5, and the upper end between cavity 2 and combustion chamber 3 is equipped with curved channel 6, the upper of cavity 2 is equipped with the water outlet 7 of fixed connection with shell 1, the right side of water outlet 7 is equipped with the gas outlet 8 that communicates with cavity 2, and the upper of gas outlet 8 is connected with the air pump 20 of fixed connection with shell 1.
[0022] Shell 1 is made of 316L stainless steel material, and is resistant to high temperature and corrosion. The solution in the cavity 2 is preferably lye. The lye (such as sodium hydroxide solution or calcium hydroxide solution) sprayed through the water outlet 7 can neutralize the acidic gas (such as HCI and SO2) in the flue gas, reducing the impact of acidic substances on the environment. The flue gas can be sucked in through the gas inlet 5 by the operation of the air pump 20, and then the flue gas enters the combustion chamber 3. The ignition head 4 ignites the incompletely combusted combustible substances again to reduce the amount of smoke particles discharged. The smoke after the second combustion enters the cavity 2 through the curved channel 6. The water curtain formed by the solution continuously sprayed by the water outlet 7 in the cavity 2 sprays the smoke dust, and the alkaline solution can neutralize the acidic substances in the smoke dust. In addition, the sprayed liquid can quickly reduce the temperature of the high-temperature flue gas to a suitable treatment temperature. Furthermore, to remove dioxins in the flue gas and dry the discharged gas, a detachable filter containing activated carbon and lime can be fixedly connected to the outlet end of the air pump 20. Lime (Ca(OH)2) can remove acidic components such as HCI and SOx in the flue gas, and activated carbon can adsorb organic pollutants such as dioxins and furan remaining in the flue gas.
[0023] Specifically, as Figure 3As shown, in order to make the solution can be recycled spray, the housing 1 is provided with a water spraying device, the water spraying device includes with the housing 1 fixed connection water pump 9 and water storage tank 10, the water inlet end of the water pump 9 is fixedly connected with the water inlet pipe 11, the water inlet pipe 11 extends to the bottom of the cavity 2, the water outlet end of the water pump 9 is fixedly connected with the water outlet pipe 12, the water outlet pipe 12 is communicated with the water storage tank 10, the water outlet 7 is communicated with the bottom of the water storage tank 10.
[0024] In the spray, start the water pump 9, the water pump 9 through the water inlet pipe 11 into the cavity 2 solution and from the water outlet pipe 12 to the water storage tank 10, the solution in the water storage tank 10 is sprayed into the cavity 2 through the water outlet 7.
[0025] Wherein, in order to avoid the water pump 9 damage caused by siltation, the water storage tank 10 is fixedly connected with the detachable filter screen 13, the filter screen 13 is below the water outlet pipe 12. The solution sucked up by the filter screen 13 is filtered into the water storage tank 10, which can avoid the siltation of the water pump 9 caused by the continuous siltation of the smoke.
[0026] In addition, in order to ensure the temperature of the spraying liquid, prevent the continuous heating of the high temperature flue gas to the liquid, and play a role in cooling, the cooling device can be installed at the bottom of the water storage tank 10.
[0027] Further, in order to remove the solid pollutants deposited in the bottom of the cavity 2, the cavity 2 is provided with a decontamination device, the decontamination device includes an inclined sewage pipe 14, the low end of the sewage pipe 14 is arranged at the bottom end of the cavity 2, the high end of the sewage pipe 14 penetrates to the outside of the housing 1 and is communicated with the sewage outlet 15, the low end of the sewage pipe 14 is communicated with the sewage inlet 16, the inside of the sewage pipe 14 is rotatably connected with the screw rod 17 along the axis direction, the screw rod 17 is provided with the spiral blade 18 which is attached to the sewage pipe 14, and the sewage pipe 14 is provided with the motor 19 which is fixedly connected with the screw rod 17.
[0028] In the sewage, start the motor 19, the motor 19 drives the spiral blade 18 to rotate through the screw rod 17, the sediment enters the sewage pipe 14 through the sewage inlet 16, and is transported to the outside of the housing 1 through the spiral blade 18, and finally is discharged through the sewage outlet 15.
[0029] Wherein, in order to make the sediment can be collected to the sewage inlet 16, the bottom end of the cavity 2 is V-shaped.
[0030] Specifically, as Figure 4 , Figure 5As shown, the water outlet 7 is a plurality of longitudinally uniformly arranged nozzles 21. The water curtain formed by the liquid sprayed by the nozzles 21 can slow down the exhaust speed of the gas under the action of the exhaust pump 20, give the smoke dust a sinking retention time, and the contact between the flue gas and the water curtain can make the acidic substances in the flue gas neutralize rapidly with the alkaline solution.
[0031] In order to make the multi-region incomplete combustion combustible fully and quickly ignite, two groups of ignition heads 4 are arranged correspondingly up and down.
[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of the present application.
Claims
1. A device for purifying waste incineration exhaust gas, comprising a housing (1), the interior of which is provided with a cavity (2) for storing liquid, characterized in that, The left side of the cavity (2) is provided with a combustion chamber (3), the combustion chamber (3) is provided with a ignition head (4), the lower end of the combustion chamber (3) is provided with a gas inlet (5), the upper end of the combustion chamber (3) is provided with a curved channel (6) between the cavity (2), the upper side of the cavity (2) is provided with a water outlet (7) fixedly connected with the shell (1), the right side of the water outlet (7) is provided with a gas outlet (8) communicated with the cavity (2), the upper side of the gas outlet (8) is communicated with a gas suction pump (20) fixedly connected with the shell (1).
2. The device for purifying waste incineration exhaust gas according to claim 1, characterized by The shell (1) is provided with a water spraying device, the water spraying device comprises a water suction pump (9) and a water storage tank (10) fixedly connected with the shell (1), the water inlet end of the water suction pump (9) is fixedly connected with a water inlet pipe (11), the water inlet pipe (11) extends downward to the bottom of the cavity (2), the water outlet end of the water suction pump (9) is fixedly connected with a water outlet pipe (12), the water outlet pipe (12) is communicated with the water storage tank (10), and the water outlet (7) is communicated with the bottom of the water storage tank (10).
3. The device for purifying waste incineration exhaust gas according to claim 2, characterized by The water storage tank (10) is fixedly connected with a detachable filter screen (13), and the filter screen (13) is below the water outlet pipe (12).
4. The device for purifying waste incineration exhaust gas according to claim 1, wherein The cavity (2) is provided with a decontamination device, the decontamination device comprises an inclined sewage pipe (14), the low end of the sewage pipe (14) is arranged at the bottom end of the cavity (2), the high end of the sewage pipe (14) penetrates to the outside of the shell (1) and is communicated with a sewage outlet (15), the low end side of the sewage pipe (14) is communicated with a sewage inlet (16), the inside of the sewage pipe (14) is rotatably connected with a screw rod (17) along the axial direction of the sewage pipe (14), the screw rod (17) is provided with a spiral blade (18) abutting the sewage pipe (14), and the sewage pipe (14) is provided with a motor (19) fixedly connected with the screw rod (17).
5. The device for purifying waste incineration exhaust gas according to claim 1 or 4, characterized in that, The bottom end of the cavity (2) is V-shaped.
6. The device for purifying waste incineration exhaust gas according to claim 1, wherein The water outlet (7) is a plurality of longitudinally uniformly arranged nozzles (21).
7. The device for purifying waste incineration exhaust gas according to claim 1, wherein The ignition head (4) is provided with two groups corresponding to the upper and lower sides.