CN218358461U - Flue gas purifying device - Google Patents
Flue gas purifying device Download PDFInfo
- Publication number
- CN218358461U CN218358461U CN202222188122.0U CN202222188122U CN218358461U CN 218358461 U CN218358461 U CN 218358461U CN 202222188122 U CN202222188122 U CN 202222188122U CN 218358461 U CN218358461 U CN 218358461U
- Authority
- CN
- China
- Prior art keywords
- pipe
- dry powder
- communicated
- smoke
- compressed air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a flue gas purification device, it can make the dry powder material distribute in dry process reaction unit's bin uniformly, ensures that more dry powder materials participate in the reaction, and it is extravagant to reduce the material. The divergent dry powder injector is independently arranged in each chamber, and the injection direction of the divergent dry powder injector is set as a reaction area in each chamber, so that dry powder materials can be uniformly obtained in each chamber; the dry powder dispersing sprayer ensures that dry powder materials can be uniformly sprayed into the reflecting area in each chamber by uniformly arranging the nozzles on the annular pipeline-shaped dispersing pipe.
Description
Technical Field
The utility model relates to a gas cleaning device technical field specifically is a gas cleaning device.
Background
In the flue gas deacidification treatment of a household garbage incineration power plant, a deacidification technology and process combination scheme is generally adopted, and mainly comprises a combination process of a semi-dry method and a dry method, a combination process of a dry method and a wet method, a combination process of a semi-dry method and a wet method, and the like. Among them, the dry system is an important component of the flue gas deacidification treatment process. In a conventional dry system such as a bag-type dust collector, a dry powder spraying device is usually used to spray dry powder into a flue at an inlet of the dust collector by using hydrated lime or sodium hydroxide as a reactant (hereinafter referred to as dry powder), and the dry powder is brought into a chamber of the dust collector by flue gas at the inlet of the dust collector to react. Prior art dry powder injection devices are typically installed at the general inlet of the flue gas. As shown in fig. 1, the bag-type dust collector 1 comprises 6 chambers 1-1, and the smoke channel 2 comprises a smoke inlet channel and a smoke outlet channel which are isolated from each other; one end of the smoke inlet channel is a smoke inlet 2-1, the other end of the smoke inlet channel is closed, and the smoke inlet channel is communicated with each bin through a smoke inlet branch pipe 2-3; one end of the smoke outlet channel is a smoke outlet 2-2, the other end of the smoke outlet channel is closed, and the smoke outlet channel is communicated with each bin 1-1 through a smoke outlet branch pipe 2-4; an induced draft fan (not marked in the figure) is arranged on one side of the smoke outlet channel;
the dry powder injection device 3 is arranged at the inner side of the smoke inlet 2-1 of the smoke inlet channel, the dry powder injected by the dry powder injection device 3 enters each chamber 1-1 along with the smoke through the smoke inlet branch pipe 2-3, the dry powder and the smoke react in the chamber 1-1, and then the purified smoke enters the smoke guide channel (not marked in the figure) from the smoke outlet 2-2 of each chamber 1-1 and is guided out to the downstream smoke treatment equipment.
However, in the prior art, the dry powder sprayed by the dry powder spraying device 3 arranged at the inner side of the flue gas inlet 2-1 enters each chamber along with the flue gas, and the problems of uneven distribution, insufficient reaction, material waste and the like of the dry powder material entering each dust remover chamber exist along with the use of equipment and the change of the flow rate of the flue gas, so that the flue gas emission index cannot be stably controlled.
SUMMERY OF THE UTILITY MODEL
In order to solve among the prior art dry method reaction system, the dry powder material that gets into every dust remover bin distributes inhomogeneous, the reaction is insufficient, the extravagant scheduling problem of material, the utility model provides a flue gas purification device, it can make the dry powder material distribute in dry method reaction device's bin uniformly, ensures that more dry powder materials participate in the reaction, reduces the material extravagant.
The structure of the utility model is as follows: a flue gas cleaning device, comprising: the dry powder spraying device comprises a bin, a smoke channel and a dry powder spraying structure, wherein the smoke channel comprises a smoke inlet channel and a smoke outlet channel which are isolated from each other; one end of the smoke inlet channel is a smoke inlet, the other end of the smoke inlet channel is closed, and the smoke inlet channel is communicated with each bin through a smoke inlet branch pipe; one end of the smoke outlet channel is a smoke outlet, the other end of the smoke outlet channel is closed, and the smoke outlet channel is communicated with each bin through a smoke outlet branch pipe; an induced draft fan is arranged on one side of a smoke outlet of the smoke outlet channel;
the method is characterized in that: the dry powder spray structure comprises: a venturi, a dry powder feed valve and a circular diverging dry powder injector; the divergent dry powder injector is respectively arranged above the position of the smoke inlet branch pipe in each chamber;
the venturi tube includes: the device comprises a material input pipe, a compressed air accelerating pipe, a mixed material discharge pipe and a mixing cavity; the material input pipe, the compressed air accelerating pipe and the mixed material discharging pipe are arranged on the mixing cavity and are respectively communicated with the inner cavity of the mixing cavity;
the compressed air accelerating pipe is a triangular cone-shaped pipe, the wider end of the compressed air accelerating pipe is communicated with a compressed air supply device, and the narrower end of the compressed air accelerating pipe is inserted into the inner cavity of the mixing cavity;
one end of the material input pipe is communicated with a dry powder feeding device through the dry powder feeding valve, and the other end of the material input pipe is communicated with the inner cavity of the mixing cavity;
the mixed material discharging pipe is arranged on one side, opposite to the compressed air accelerating pipe, of the mixing cavity, and the central axes of the mixed material discharging pipe and the compressed air accelerating pipe are located on the same straight line;
each divergent dry powder injector is communicated with the mixed material discharge pipe through a dry powder conveying pipeline;
the spraying direction of the divergent dry powder sprayer faces to the reaction area in the chamber;
the emitting dry powder injector includes: nozzle, feed inlet and dispersion pipe, the dispersion pipe is the annular duct structure, evenly set up along the circumference on the dispersion pipe the nozzle, the dispersion pipe passes through the feed inlet intercommunication dry powder pipeline.
It is further characterized in that:
the material input pipe comprises a feeding pipe and a guide pipe which are communicated with each other, one end of the feeding pipe is communicated with the dry powder feeding device through the dry powder feeding valve, the other end of the feeding pipe is communicated with one end of the guide pipe, and one end of the guide pipe is communicated with the inner cavity of the mixing cavity;
a guide included angle A is arranged between the guide pipe and the central axis of the feeding pipe, and the guide included angle A ensures that the axial extension line of the guide pipe is positioned between the compressed air accelerating pipe and the mixed material discharging pipe in the inner cavity of the mixing cavity;
the emitting dry powder injector further comprises: the device comprises material guide pipes and material guide branch pipes, wherein the material guide pipes are respectively of an annular pipeline structure, and the diameter of each dispersing pipe is larger than that of each material guide pipe; the dispersion pipe and the material guide pipe are concentrically arranged at an upper layer and a lower layer, and are communicated through the straight pipe type material guide branch pipe; the material guide pipe is communicated with the feeding hole;
it still includes: a solid flow meter and a chamber flue gas analyzer; the solid flow meter is arranged on the dry powder conveying pipeline; the bin flue gas analyzer is arranged inside each bin.
The utility model provides a flue gas purification device, which is characterized in that a divergent dry powder injector is independently arranged in each chamber, the injection direction of the divergent dry powder injector is arranged as a reaction area in each chamber, and each chamber can be ensured to uniformly obtain dry powder materials; the dispersing dry powder injector ensures that dry powder materials can be uniformly sprayed into a reaction area inside each chamber by uniformly arranging the nozzles on the annular pipeline-shaped dispersing pipe, so that the dry powder materials are further uniformly distributed in the dry reaction device, more dry powder materials are ensured to participate in the reaction, and the material waste is reduced.
Drawings
FIG. 1 is a schematic diagram of a dry system in the prior art;
FIG. 2 is a schematic structural diagram of an embodiment of a flue gas purification device according to the present invention;
FIG. 3 is a schematic structural view of a chamber of a bag-type dust collector in an embodiment of the present invention;
fig. 4 is a schematic structural view of a main view of the scattering dry powder injector of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 4;
fig. 6 is a schematic structural view of the venturi tube.
Detailed Description
The utility model discloses a flue gas purification device, as shown in fig. 2 and fig. 3, flue gas purification device includes: the device comprises a chamber 1-1 and a smoke channel 2, wherein the smoke channel 2 comprises a smoke inlet channel (not marked in the figure) and a smoke outlet channel (not marked in the figure) which are isolated from each other; one end of the smoke inlet channel is a smoke inlet 2-1, the other end of the smoke inlet channel is closed, and the smoke inlet channel is communicated with each bin 1-1 through a smoke inlet branch pipe 2-3; one end of the smoke outlet channel is a smoke outlet 2-2, the other end of the smoke outlet channel is closed, and the smoke outlet channel is communicated with each bin 1-1 through a smoke outlet branch pipe 2-4; an induced draft fan (not marked in the figure) is arranged on one side of the smoke outlet 2-2 of the smoke outlet channel.
The utility model discloses a dry powder injection structure is independent setting to every bin, and the dry powder that diverges that dry powder sprays usefulness 4 sets up respectively in every bin 1-1 is inside, can ensure like this to spray the dry powder material in every bin 1-1 evenly.
Taking the bag-type dust collector of fig. 2 as an example, the dry powder injection structure includes: a venturi tube 6, a dry powder feeding valve 8, a circular divergent dry powder injector 4 and a conveying fan 9; the divergent dry powder injector 4 is respectively arranged above the position of the smoke inlet branch pipe 2-3 in each chamber 1-1, so that smoke entering from the cigarette pipe 2-3 is ensured to be mixed with the material sprayed from the divergent dry powder injector 4 on the way of flowing to the upper cloth bag reaction area.
As shown in fig. 6, the venturi tube 6 includes: a material input pipe 6-1, a compressed air accelerating pipe 6-4, a mixed material discharge pipe 6-2 and a mixing cavity 6-3; the material input pipe 6-1, the compressed air accelerating pipe 6-4 and the mixed material discharge pipe 6-2 are arranged on the mixing cavity 6-3 and are respectively communicated with the inner cavity of the mixing cavity 6-3;
the compressed air accelerating tube 6-4 is a triangular cone-shaped tube, the wider end of the compressed air accelerating tube is communicated with a compressed air supply device, and the narrower end of the compressed air accelerating tube is inserted into the inner cavity of the mixing cavity 6-3; in this embodiment, the compressed air supply device is realized by the conveyance fan 9.
One end of the material input pipe 6-1 is communicated with a dry powder feeding device through a dry powder feeding valve 8, and the other end is communicated with the inner cavity of the mixing cavity 6-3;
the mixed material discharging pipe 6-2 is arranged on one side of the mixing cavity 6-3 opposite to the compressed air accelerating pipe 6-4, and the central axes of the mixed material discharging pipe 6-2 and the compressed air accelerating pipe 6-4 are positioned on the same straight line. Each divergent dry powder injector 4 is communicated with the mixed material discharge pipe 6-2 through a dry powder conveying pipeline 5.
When dry powder material enters an inner cavity of the mixing cavity 6-3 from the material input pipe 6-1, the dry powder material is blown into the mixed material discharge pipe 6-2 by high-speed compressed air entering from the compressed air accelerating pipe 6-4 and is conveyed into the dispersing dry powder ejector 4 through the dry powder conveying pipeline 5. Based on leading-in inner chamber to mixing chamber 6-3 with high-speed compressed air through compressed air accelerating tube 6-4, fully mix with the dry powder material, then blow into in dry powder pipeline 5, ensure that the dry powder material can get into and disperse dry powder sprayer 4 uniformly, can not block up equipment, and can uniformly mix the reaction with the flue gas.
The material input pipe 6-1 comprises a feed pipe 6-11 and a guide pipe 6-12 which are mutually communicated, one end of the feed pipe 6-11 is communicated with the dry powder feeding device through a dry powder feeding valve 8, the other end is communicated with one end of the guide pipe 6-12, and one end of the guide pipe 6-12 is communicated with the inner cavity of the mixing cavity 6-3;
a guide included angle A is arranged between the central axes of the guide pipe 6-12 and the feeding pipe 6-11, and the guide included angle A ensures that the axial extension line of the guide pipe 6-12 is positioned between the compressed air accelerating pipe 6-4 and the mixed material discharging pipe 6-2 in the inner cavity of the mixing cavity 6-3.
The dry powder material is guided to the position between the compressed air accelerating pipe 6-4 and the mixed material discharging pipe 6-2 through the guide pipe 6-12, the probability of material piling in the inner cavity of the mixing cavity 6-3 is reduced, and after the dry powder material enters the position between the compressed air accelerating pipe 6-4 and the mixed material discharging pipe 6-2, the dry powder material is blown into the mixed material discharging pipe 6-2 which is positioned on the same straight line with the central axis of the compressed air accelerating pipe 6-4 by high-speed compressed air.
The spraying direction of the divergent dry powder sprayer 4 is towards the reaction area 1-2 in the bin 1-1, and the reflection area 1-2 in the bag-type dust collector in the embodiment is the bag area in each bin 1-1. Ensures that the dry powder material can be uniformly sprayed on the cloth bag area and can fully react with the smoke.
The dry powder material in the dry powder feeding device is conveyed into the venturi tube 6 through the opening and closing control of the dry powder feeding valve 8, and air is blown into the dry powder conveying pipeline 5 from the venturi tube 6 through high-speed grinding, and then conveyed into the dispersing dry powder injector 4.
As shown in fig. 4 and 5, the scattering dry powder injector 4 includes: 4-4 parts of nozzles, 4-1 parts of feed inlets, 4-3 parts of dispersion pipes, 4-2 parts of material guide pipes and 4-5 parts of material guide branch pipes; the dispersion pipe 4-3 and the material guide pipe 4-2 are both in an annular pipeline structure, the diameter of the dispersion pipe 4-3 is larger than that of the material guide pipe 4-2, the dispersion pipe 4-3 and the material guide pipe 4-2 are concentrically arranged at an upper layer and a lower layer, and the dispersion pipe 4-3 and the material guide pipe 4-2 are communicated through a straight pipe type material guide branch pipe 4-5;
the nozzles 4-4 are uniformly arranged on the dispersion pipe 4-3 along the circumference, the material guide pipe 4-2 is communicated with the material inlet 4-1, and the material inlet 4-1 is communicated with the dry powder conveying pipeline 5.
The dry powder material mixed with the compressed air in the dry powder conveying pipeline 5 enters the material guide pipe 4-2 through the material inlet 4-1, then enters the annular material guide pipe 4-2, enters the dispersion pipe 4-3 through the material guide branch pipes 4-5 uniformly arranged on the material guide pipe 4-2, and then is sprayed out from the nozzle 4-4. In the specific implementation, the nozzles 4-4 can be implemented by using the existing nozzles with the diverging function, such as conical nozzles. The dry powder material entering from the dry powder conveying pipeline 5 is uniformly sprayed in the reaction area 1-2 in the chamber by the dispersing dry powder injector 4, so that the dry powder material can be fully reacted with the smoke.
When the device is implemented, a solid flow meter 7 can be arranged on the dry powder conveying pipeline 5; a bin flue gas analyzer 10 is arranged in each bin 1-1; monitoring of HCL and SO in flue gas in each chamber is performed by a flue gas analyzer 10 2 Content, then detecting the dry powder injection amount of each chamber in real time through a solid flow meter 7, confirming whether the dry powder material amount distributed in each chamber is proper or not, and adjusting the dry powder material amount through a dry powder feeding valve 8 if necessaryThe dry powder injection amount of each bin is adjusted, the feeding precision of each bin is further controlled, and the material waste is reduced.
After the technical scheme of the utility model is used, the independent feeding of each chamber in a distributed dry powder spraying mode is realized through the divergent dry powder sprayer 4, so that each chamber can obtain proper dry powder materials, and the material waste is avoided; the divergent dry powder injector ensures that the reaction area 1-2 of each chamber can uniformly spray dry powder materials, thereby further reducing material waste; the technical scheme is used for avoiding material waste and reducing the generation amount of fly ash, thereby reducing the material consumption cost and the subsequent fly ash treatment cost.
Claims (4)
1. A flue gas cleaning device, comprising: the dry powder spraying device comprises a bin, a smoke channel and a dry powder spraying structure, wherein the smoke channel comprises a smoke inlet channel and a smoke outlet channel which are mutually isolated; one end of the smoke inlet channel is a smoke inlet, the other end of the smoke inlet channel is closed, and the smoke inlet channel is communicated with each bin through a smoke inlet branch pipe; one end of the smoke outlet channel is a smoke outlet, the other end of the smoke outlet channel is closed, and the smoke outlet channel is communicated with each bin through a smoke outlet branch pipe; an induced draft fan is arranged on one side of a smoke outlet of the smoke outlet channel;
the method is characterized in that: the dry powder spray structure comprises: a venturi, a dry powder feed valve and a circular diverging dry powder injector; the divergent dry powder injector is respectively arranged above the position of the smoke inlet branch pipe in each chamber;
the venturi tube includes: the device comprises a material input pipe, a compressed air accelerating pipe, a mixed material discharge pipe and a mixing cavity; the material input pipe, the compressed air accelerating pipe and the mixed material discharging pipe are arranged on the mixing cavity and are respectively communicated with the inner cavity of the mixing cavity;
the compressed air accelerating pipe is a triangular cone-shaped pipe, the wider end of the compressed air accelerating pipe is communicated with a compressed air supply device, and the narrower end of the compressed air accelerating pipe is inserted into the inner cavity of the mixing cavity;
one end of the material input pipe is communicated with a dry powder feeding device through the dry powder feeding valve, and the other end of the material input pipe is communicated with the inner cavity of the mixing cavity;
the mixed material discharging pipe is arranged on one side, opposite to the compressed air accelerating pipe, of the mixing cavity, and the central axes of the mixed material discharging pipe and the compressed air accelerating pipe are located on the same straight line;
each divergent dry powder injector is communicated with the mixed material discharge pipe through a dry powder conveying pipeline;
the spraying direction of the divergent dry powder sprayer faces to the reaction area in the chamber;
the emitting dry powder injector includes: nozzle, feed inlet and dispersion pipe, the dispersion pipe is the annular duct structure, evenly set up along the circumference on the dispersion pipe the nozzle, the dispersion pipe passes through the feed inlet intercommunication dry powder pipeline.
2. The flue gas purification device according to claim 1, wherein: the material input pipe comprises a feeding pipe and a guide pipe which are communicated with each other, one end of the feeding pipe is communicated with the dry powder feeding device through the dry powder feeding valve, the other end of the feeding pipe is communicated with one end of the guide pipe, and one end of the guide pipe is communicated with the inner cavity of the mixing cavity;
the stand pipe with set up direction contained angle A between the axis of inlet pipe, direction contained angle A ensures the axis extension line of stand pipe is in be located in the inner chamber of hybrid chamber compressed air accelerating tube with position between the combined material discharging pipe.
3. The flue gas purification device according to claim 1, wherein: the emitting dry powder injector further comprises: the material guide pipes are respectively of an annular pipeline structure, and the diameter of the dispersion pipe is larger than that of the material guide pipe; the dispersion pipe and the material guide pipe are concentrically arranged at an upper layer and a lower layer, and are communicated through the straight pipe type material guide branch pipe; the material guide pipe is communicated with the feeding hole.
4. The flue gas purification device according to claim 1, wherein: it still includes: a solid flow meter and a chamber flue gas analyzer; the solid flow meter is arranged on the dry powder conveying pipeline; the bin flue gas analyzer is arranged inside each bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222188122.0U CN218358461U (en) | 2022-08-19 | 2022-08-19 | Flue gas purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222188122.0U CN218358461U (en) | 2022-08-19 | 2022-08-19 | Flue gas purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218358461U true CN218358461U (en) | 2023-01-24 |
Family
ID=84967008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222188122.0U Active CN218358461U (en) | 2022-08-19 | 2022-08-19 | Flue gas purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218358461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117358049A (en) * | 2023-12-07 | 2024-01-09 | 广东旺大集团股份有限公司 | Clean feed fermentation waste gas treatment device and application method thereof |
-
2022
- 2022-08-19 CN CN202222188122.0U patent/CN218358461U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117358049A (en) * | 2023-12-07 | 2024-01-09 | 广东旺大集团股份有限公司 | Clean feed fermentation waste gas treatment device and application method thereof |
| CN117358049B (en) * | 2023-12-07 | 2024-02-23 | 广东旺大集团股份有限公司 | Clean feed fermentation waste gas treatment device and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218358461U (en) | Flue gas purifying device | |
| CN207913516U (en) | A kind of spray ammonia mixing arrangement for denitrating flue gas | |
| CN103566751B (en) | A kind of fluidized-bed combustion boiler sulfur method and device thereof | |
| CN212758021U (en) | Boiler flue gas circulating fluidized bed desulphurization unit | |
| CN204165070U (en) | With the injection type coal, pulverulent fuel mixer of negative pressure regulatory function | |
| CN212790506U (en) | Denitration ammonia injection fine adjustment system | |
| CN115301071A (en) | Flue gas purifying device | |
| CN219722462U (en) | High-temperature flue gas dust removal, desulfurization and denitrification integrated system for glass kiln | |
| CN108568199A (en) | A kind of industrial smoke processing method and industrial smoke processing system | |
| CN207507270U (en) | SCR denitration system sprays ammonia current equalizer | |
| CN211694883U (en) | Oxygenation structure and oxygen boosting combustor | |
| CN209275655U (en) | In-furnace calcium spraying air-transport system | |
| CN210057883U (en) | Denitration system of dry-method cement rotary kiln | |
| CN210356669U (en) | Desulfurization and denitrification tower for waste gas treatment of thermal power plant | |
| CN212068337U (en) | Mixer humidifying device suitable for low-index tail gas emission | |
| CN207463477U (en) | Activated carbon nozzle | |
| CN216367387U (en) | Semi-dry desulfurization device | |
| CN215982592U (en) | Mixed formula combustor in phosphorus-containing waste liquid | |
| CN112058064A (en) | Circulating spouting NOx emission reduction system and working method thereof | |
| CN213656820U (en) | Pulverized coal direct-fired heat supply multi-pipeline structure | |
| CN217988920U (en) | Flue dust deposition prevention system based on dry desulfurization process | |
| CN217004509U (en) | Combustion accelerator adding system for cement production line | |
| CN213630482U (en) | Ultralow emission treatment device for heat supply boiler in alumina industry | |
| CN209576295U (en) | A kind of accumulatingdust device of desulfurizing tower | |
| CN216604706U (en) | Flue gas desulfurization treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |