CN217092895U - Dry quenching flue gas desulfurization treatment equipment - Google Patents
Dry quenching flue gas desulfurization treatment equipment Download PDFInfo
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- CN217092895U CN217092895U CN202220615811.2U CN202220615811U CN217092895U CN 217092895 U CN217092895 U CN 217092895U CN 202220615811 U CN202220615811 U CN 202220615811U CN 217092895 U CN217092895 U CN 217092895U
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Abstract
The embodiment of the application provides a dry quenching flue gas desulfurization treatment facility, includes: the system comprises a primary dust removal device, a secondary dust removal device, a desulfurization device and a first channel for introducing dry quenching flue gas; the first channel is sequentially connected with the primary dust removal device, the desulfurization device and the secondary dust removal device along the flowing direction of dry quenching flue gas, the desulfurization device is used for spraying a desulfurizing agent into the first channel, the primary dust removal device is used for separating coke powder in the flue gas, the secondary dust removal device comprises a second bag type dust collector, and the second bag type dust collector is used for separating desulfurization byproducts from the flue gas. According to the dry quenching flue gas desulfurization treatment equipment, the separation of the coke powder and the desulfurization by-products obtained by two-stage dust removal can realize resource recycling; unreacted desulfurizer is attached to a filter bag of the second bag type dust collector, and the flue gas is contacted with the unreacted desulfurizer when passing through the filter bag, so that secondary desulfurization is realized, and the desulfurization effect is improved.
Description
Technical Field
The application relates to the technical field of environmental protection, in particular to dry quenching flue gas desulfurization treatment equipment.
Background
Quenching refers to cooling refined high-temperature coke to a temperature convenient for transportation and storage, and quenching modes comprise dry quenching and wet quenching, wherein a large amount of flue gas is generated in the dry quenching process, the flue gas contains a certain amount of sulfur dioxide gas, dust and the like, so that the environment is badly affected, and the flue gas discharged by a dry quenching device can be discharged only after being filtered and desulfurized to reach the standard. Therefore, a dry quenching flue gas desulfurization treatment device is needed to discharge the flue gas generated in the quenching process after reaching the standard.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a dry quenching flue gas desulfurization treatment device to realize desulfurization treatment of flue gas generated in a dry quenching process. The specific technical scheme is as follows:
the embodiment of the application provides a dry quenching flue gas desulfurization treatment facility, includes: the system comprises a primary dust removal device, a secondary dust removal device, a desulfurization device and a first channel for introducing dry quenching flue gas; the first channel is sequentially connected with the primary dust removal device, the desulfurization device and the secondary dust removal device along the flow direction of the dry quenching flue gas, the desulfurization device is used for spraying a desulfurizing agent into the first channel, the primary dust removal device is used for separating coke powder in the flue gas, the secondary dust removal device comprises a second bag type dust collector, and the second bag type dust collector is used for separating desulfurization byproducts from the flue gas.
According to the dry quenching flue gas desulfurization treatment equipment in the embodiment of the application, firstly, coke powder contained in dry quenching flue gas is separated by arranging the primary dust removal device, the flue gas returns to the first channel after passing through the primary dust removal device, the desulfurization device sprays a desulfurizing agent into the first channel, the desulfurizing agent is fully mixed with the flue gas in the channel to react and desulfurize, a desulfurization byproduct and an unreacted desulfurizing agent are obtained and enter the secondary dust removal device along with the flue gas, the desulfurization byproduct and the unreacted desulfurizing agent are attached to a filter bag of the second bag type dust remover, the flue gas is contacted with the unreacted desulfurizing agent when passing through the filter bag, secondary desulfurization is realized, the desulfurizing agent and the flue gas are fully mixed in the process, and the desulfurization effect is improved; meanwhile, the separation of the coke powder and the desulphurization byproduct can realize the purpose of resource recycling.
In some embodiments of the present application, the primary dust removal device comprises a first bag house configured to attach coke powder in the dry quenching flue gas to a surface of the filter bag.
In some embodiments of the present application, the first channel includes a first air inlet for absorbing flue gas generated by a dry quenching device.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment equipment further comprises a second channel, the second channel comprises a second gas inlet and a second gas outlet, the second gas inlet of the second channel is used for absorbing smoke generated by a dry quenching device, and the second gas outlet of the second channel is connected with the secondary dust removal device.
In some embodiments of this application, dry quenching flue gas desulfurization treatment facility still includes first scraper blade machine and fine coke ash bin, one-level dust collector includes first row of ash device, first scraper blade machine includes first feed inlet and first discharge gate, first row of ash device sets up first feed inlet, fine coke ash bin sets up first discharge gate, first scraper blade machine configuration is followed fine coke first row of ash device carries extremely save in the fine coke ash bin.
In some embodiments of this application, dry quenching flue gas desulfurization treatment facility still includes that the second scrapes trigger and desulfurization accessory substance ash bin, second grade dust collector includes second row ash device, the second scrapes trigger and includes second feed inlet and second discharge gate, the ash device setting is arranged to the second feed inlet, desulfurization accessory substance ash bin sets up the second discharge gate, the second scrapes trigger configuration to follow the desulfurization accessory substance the second row ash device carry extremely save in the desulfurization accessory substance ash bin.
In some embodiments of the present application, the secondary dust removing device further comprises a cooler disposed on the first channel and between the secondary dust removing device and the desulfurization device, and the second air outlet of the second channel is connected to the cooler.
In some embodiments of the present application, the desulfurization device includes a desulfurizing agent bin, a feeder, and a second fan, the desulfurizing agent bin contains a desulfurizing agent, the feeder is configured to uniformly convey the desulfurizing agent in the desulfurizing agent bin to the second fan, and the desulfurizing agent is blown into the first channel by the second fan.
In some embodiments of the present application, the desulfurizing agent is a calcium-based desulfurizing agent.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment device further comprises a first fan, the first channel comprises a first air outlet, and the first fan is disposed at the first air outlet of the first channel and is used for enhancing the gas flow rate in the first channel.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
Fig. 1 is a schematic structural diagram of a dry quenching flue gas desulfurization treatment device according to some embodiments of the present application.
The reference numbers are as follows:
100-grade dust removal device, 110 first bag type dust remover, 120 first scraper, 121 first feeding hole, 122 first discharging hole, 130 coke breeze ash bin and 140 first ash discharge device;
200 of secondary dust removal devices, 210 of a second bag type dust remover, 220 of a second scraper conveyor, 221 of a second feeding hole, 222 of a second discharging hole, 230 of a desulfurization byproduct ash bin, 240 of a second ash discharge device and 250 of a cooler;
300 desulfurization device, 310 desulfurizing agent bin, 320 feeder and 330 second fan;
400 a first channel, 410 a first air inlet, 420 a first air outlet, 430 a first fan;
500 second channel, 510 second inlet, 520 second outlet.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
Referring to fig. 1, an embodiment of the present application provides a dry quenching flue gas desulfurization processing apparatus, including: the device comprises a primary dust removal device 100, a secondary dust removal device 200, a desulphurization device 300 and a first channel 400 for introducing dry quenching flue gas; the first channel 400 is sequentially connected with the primary dust removal device 100, the desulfurization device 300 and the secondary dust removal device 200 along the flowing direction of the dry quenching flue gas, the arrow direction in the figure 1 is the flue gas flowing direction, the desulfurization device 300 is used for spraying a desulfurizing agent into the first channel 400, the primary dust removal device 100 is used for separating coke powder in the flue gas, the secondary dust removal device 200 comprises a second bag type dust collector 210, and the second bag type dust collector 210 is used for separating desulfurization byproducts from the flue gas.
The coke dry quenching flue gas desulfurization treatment equipment provided by the embodiment of the application can be used for desulfurization and dust removal of flue gas discharged by a coke dry quenching device, the original process form of dust removal of a coke dry quenching environment is reserved, flue gas generated in the coke dry quenching process comprises sulfur-containing flue gas, smoke dust and coke powder, the flue gas firstly enters the primary dust removal device 100 in the first channel 400, and coke powder particles can be separated from the flue gas in the modes of sedimentation, filtration, adsorption and the like. The flue gas enters the first channel 400 after passing through the primary dust collector 100, the flue gas in the dry quenching furnace is high-temperature flue gas, a desulfurizer is sprayed to the first channel 400 by the desulfurizer 300, the desulfurizer is fully mixed and reacted with the high-temperature flue gas in the first channel 400 to obtain a desulfurization byproduct, the flue gas at the moment also contains the incompletely reacted desulfurizer, the desulfurization byproduct and the desulfurizer enter the secondary dust collector 200 along with the flue gas, the secondary dust collector 200 comprises a second bag type dust collector 210, the second bag type dust collector 210 filters the flue gas through a filter bag arranged in the second bag type dust collector, the desulfurization byproduct and the incompletely reacted desulfurizer are attached to the filter bag because particles are larger than pores of the filter bag, the flue gas contacts the incompletely reacted desulfurizer on the filter bag when passing through the filter bag to realize secondary desulfurization, the desulfurization efficiency of the desulfurizer is improved in the embodiment, and the separation of coke powder and the desulfurization byproduct is realized at the same time, the coke powder and the desulphurization by-product can be sold as products, thereby generating economic value.
The second bag type dust collector 210 is preferably a pulse bag type dust collector, compressed air is used as dust cleaning power, the compressed air is discharged instantly by using a pulse blowing mechanism, multiple times of secondary air is induced to be injected into a filter bag at a high speed, the filter bag is rapidly expanded, and desulfurization byproducts attached to the filter bag are removed by means of impact vibration and reverse airflow to enter a collecting area. The second baghouse 210 is not limited to a pulse baghouse, and other baghouses that can be used to filter and collect the desulfurization byproducts in the flue gas are within the scope of the present embodiment.
In some embodiments of the present application, the primary dust removing device 100 includes the first bag collector 110, the dust removing efficiency of the bag collector is high, the coke powder can adhere to the filter bag, and after the device works for a period of time, the coke powder on the filter bag is removed by controlling the blowback valve of the bag collector, so as to achieve the effect of separating and collecting the coke powder. The first bag type dust collector 110 is preferably a pulse bag type dust collector, compressed air is used as dust cleaning power, the compressed air is discharged instantly by using a pulse blowing mechanism, multiple times of secondary air is induced to be injected into a filter bag at a high speed, the filter bag is rapidly expanded, and coke powder attached to the filter bag is removed by means of impact vibration and reverse airflow to enter a collecting area. The pulse bag type dust collector is the preferable scheme of the embodiment, and other bag type dust collectors which can be used for filtering and collecting coke powder in the flue gas are all in the protection scope of the embodiment.
In some embodiments of the present application, the first channel 400 includes a first gas inlet 410, the first gas inlet 410 is used for absorbing sulfur-containing flue gas generated by the dry quenching device, and the first gas inlet 410 can be selectively arranged at a coke charging position of the dry quenching furnace, a diffusing pipe of a pre-storage chamber of the dry quenching furnace, a diffusing port of an inert gas circulating fan and the like to generate sulfur-containing flue gas. In the production process of the dry quenching coke technology, before red coke is fed to a coke loading position of a dry quenching furnace, a top cover of the dry quenching furnace needs to be opened firstly, and because the dry quenching furnace is in a positive pressure state, a large amount of smoke dust can escape outwards when the cover is opened, wherein SO in the smoke dust 2 The content is high. Further, when the red coke enters the pre-storage chamber of the dry quenching furnace, a diffusing pipe in the pre-storage chamber of the dry quenching furnace is used for diffusing a part of gas to maintain the pressure of the pre-storage chamber, and the diffused gas contains SO 2 . Meanwhile, the inert gas circulating fan continuously feeds inert gas into the dry quenching furnace to circularly cool the red coke, and the gas diffused by the diffusing port of the inert gas circulating fan contains SO in the process 2 The first air inlet 410 is disposed at the above position to facilitate the improvement of the desulfurization dust removal effect.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment equipment further includes a second channel 500, the second channel 500 includes a second gas inlet 510 and a second gas outlet 520, the second gas outlet 520 of the second channel 500 is connected to the secondary dust removal device 200, and the flue gas enters the secondary dust removal device 200 through the second gas outlet 520 and then enters the first channel 400 through the secondary dust removal device 200. Specifically, the second channel 500 is directly connected to the secondary dust removing device 200 without passing through the desulfurization device 300, and the second air inlet 51 is formed therein0 is used for absorbing sulfur-free smoke dust generated by the dry quenching device, and then the second air inlet 510 of the second channel 500 can be arranged at the coke discharging and blanking position of the dry quenching device, the coke at the blanking position is discharged from the dry quenching furnace at a certain speed and is easy to generate smoke dust, the coke at the moment is cooled, and the smoke dust generated by the blanking does not contain SO 2 And can directly enter the secondary dust removing device 200 through the second channel 500 for dust removal. The first channel 400 and the second channel 500 are used for respectively absorbing sulfur-containing flue gas and sulfur-free smoke dust, the sulfur-free smoke dust is prevented from passing through the desulfurization device 300 through the second channel 500, waste of a desulfurizing agent can be reduced, and the operation efficiency of the equipment is higher.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment equipment further includes a first scraper 120 and a coke breeze ash bin 130, the primary dust removal device 100 includes a first ash discharge device 140, the first ash discharge device 140 is used for discharging the coke breeze collected in the primary dust removal device 100, the first scraper 120 includes a first feeding port 121 and a first discharging port 122, and the number of the first feeding port 121 and the first discharging port 122 is not particularly limited in this embodiment. The first ash discharging device 140 is arranged at the first feeding hole 121, the coke powder ash bin 130 is arranged at the first discharging hole 122, and the first scraper 120 conveys the coke powder from the first ash discharging device 140 to the coke powder ash bin 130 for storage. Wherein, first scraper 120 is including the shell, and first scraper 120 carries the fine coke through the scraper chain, and whole transportation process all goes on in the shell, prevents that the fine coke raise dust in transportation process from producing secondary pollution.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment equipment further includes a second scraper 220 and a desulfurization byproduct ash bin 230, the secondary dust removal device 200 includes a second ash discharge device 240, the second ash discharge device 240 is used for discharging desulfurization byproducts collected in the secondary dust removal device 200, the second scraper 220 includes a second feed port 221 and a second discharge port 222, and the number of the second feed port 221 and the second discharge port 222 is not particularly limited in this embodiment. The second ash discharging device 240 is arranged at the second feeding hole 221, the desulfurization byproduct ash bin 230 is arranged at the second discharging hole 222, and the second scraper 220 conveys the desulfurization byproducts from the second ash discharging device 240 to the desulfurization byproduct ash bin 230 for storage. Wherein, the second scraper conveyor 220 includes the shell, and the desulfurization accessory substance is carried through the scraper chain to second scraper conveyor 220, and whole transportation process all goes on in the shell, prevents that the desulfurization accessory substance from raising dust in transportation process and producing secondary pollution.
In some embodiments of the present application, the secondary dust removing device 200 further comprises a cooler 250, the cooler 250 is disposed on the first channel 400 and between the secondary dust removing device 200 and the desulfurization device 300, and the second air outlet 520 of the second channel 500 is connected to the cooler 250. The dry quenching flue gas has higher temperature emitted from the dry quenching furnace, the temperature borne by the filter bag of the bag type dust collector is below 200 ℃, the cooler 250 is used for cooling the flue gas, and the cooled flue gas enters the second bag type dust collector 210 to play a role in protecting equipment. Among them, the cooler 250 is preferably a regenerative cooler which is simple in structure and resistant to high temperature.
In some embodiments of the present application, the desulfurization apparatus 300 includes a desulfurizing agent bin 310, a feeder 320, and a second fan 330, the desulfurizing agent bin 310 is used for containing a desulfurizing agent, a feed inlet of the feeder 320 is connected to the desulfurizing agent bin 310, the desulfurizing agent in the desulfurizing agent bin 310 is uniformly conveyed to the second fan 330, and the desulfurizing agent is blown into the first channel 400 by the second fan 330. The feeder 320 is preferably a rotary feeder 320, and the feeding speed of the rotary feeder 320 can be controlled according to the amount of flue gas to achieve the optimum amount of desulfurizer. The second fan 330 blows off the desulfurizer at a certain speed and mixes the desulfurizer into the flue gas, SO that the contact area between the desulfurizer and the flue gas is increased, and the desulfurizer and SO are favorably mixed with the flue gas 2 Mixing and reacting.
In some embodiments of the present application, the desulfurizing agent is a calcium-based desulfurizing agent. Calcium-based desulfurizing agent and SO 2 The reaction is carried out to obtain calcium-based desulfurization byproducts, and the recycling treatment approach (cold state) of the calcium-based desulfurization byproducts can be used for semi-dry desulfurization processes such as CFB, SDA and the like, and can also be used for manufacturing pseudo-ginseng grey soil, paving ash and the like; the calcium-based desulfurization byproduct recycling treatment approach (thermal state) can be used for the desulfurization process in the circulating fluidized bed furnace.
In some embodiments of the present application, the dry quenching flue gas desulfurization treatment apparatus further includes a first fan 430, the first channel 400 includes a first gas outlet 420, and the gas that reaches the standard after the flue gas is dedusted and desulfurized by the primary dedusting device 100, the desulfurizing device 300 and the secondary dedusting device 200 is discharged through the first gas outlet 420. The first fan 430 is disposed at the first air outlet 420 of the first channel 400, and is configured to increase a flow rate of flue gas in the first channel 400, and increase a negative pressure in the first channel 400, so as to ensure that the first air inlet of the first channel 400 can suck flue gas generated by the dry quenching device. The first fan 430 is disposed at the first air outlet 420 of the first channel 400, and the flue gas passing through the first fan 430 is dedusted and desulfurized, so that corrosion of the flue gas to the first fan 430 can be reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A dry quenching flue gas desulfurization treatment device is characterized by comprising: the system comprises a primary dust removal device, a secondary dust removal device, a desulfurization device and a first channel for introducing dry quenching flue gas; the first channel is sequentially connected with the primary dust removal device, the desulfurization device and the secondary dust removal device along the flow direction of the dry quenching flue gas, the desulfurization device is used for spraying a desulfurizer into the first channel, the primary dust removal device is used for separating coke powder in the flue gas, the secondary dust removal device comprises a second bag type dust collector, and the second bag type dust collector is used for separating desulfurization byproducts in the flue gas.
2. The dry quenching flue gas desulfurization treatment facility of claim 1, wherein the primary dust removal device comprises a first bag collector configured to attach coke powder in the dry quenching flue gas to a surface of a filter bag.
3. The dry quenching flue gas desulfurization treatment apparatus of any one of claims 1 to 2, wherein the first passage comprises a first gas inlet for absorbing flue gas generated by a dry quenching device.
4. The dry quenching flue gas desulfurization treatment equipment as claimed in claim 1, further comprising a second channel, wherein the second channel comprises a second gas inlet and a second gas outlet, the second gas inlet of the second channel is used for absorbing smoke generated by a dry quenching device, and the second gas outlet of the second channel is connected with the secondary dust removal device.
5. The dry quenching flue gas desulfurization treatment equipment of claim 2, further comprising a first scraper and a coke powder ash bin, wherein the primary dust removal device comprises a first ash discharge device, the first scraper comprises a first feed inlet and a first discharge outlet, the first ash discharge device is arranged at the first feed inlet, the coke powder ash bin is arranged at the first discharge outlet, and the first scraper is configured to convey coke powder from the first ash discharge device to the coke powder ash bin for storage.
6. The dry quenching flue gas desulfurization treatment facility of claim 1, further comprising a second scraper and a desulfurization byproduct ash bin, wherein the secondary dust removal device comprises a second ash discharge device, the second scraper comprises a second feed port and a second discharge port, the second ash discharge device is disposed at the second feed port, the desulfurization byproduct ash bin is disposed at the second discharge port, and the second scraper is configured to convey desulfurization byproducts from the second ash discharge device to the desulfurization byproduct ash bin for storage.
7. The dry quenching flue gas desulfurization treatment device of claim 4, wherein the secondary dedusting device further comprises a cooler, the cooler is arranged on the first channel and is positioned between the secondary dedusting device and the desulfurization device, and the second air outlet of the second channel is connected with the cooler.
8. The dry quenching flue gas desulfurization treatment device of claim 1, wherein the desulfurization device comprises a desulfurizer bin, a feeder and a second fan, the desulfurizer bin contains a desulfurizer, the feeder is configured to uniformly convey the desulfurizer in the desulfurizer bin to the second fan, and the desulfurizer is blown into the first channel by the second fan.
9. The dry quenching flue gas desulfurization treatment device of claim 1, wherein the desulfurizing agent is a calcium-based desulfurizing agent.
10. The dry quenching flue gas desulfurization treatment facility of claim 7, further comprising a first fan, the first channel comprising a first gas outlet, the first fan disposed at the first gas outlet of the first channel for enhancing a gas flow rate within the first channel.
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| CN202220615811.2U CN217092895U (en) | 2022-03-21 | 2022-03-21 | Dry quenching flue gas desulfurization treatment equipment |
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| CN202220615811.2U CN217092895U (en) | 2022-03-21 | 2022-03-21 | Dry quenching flue gas desulfurization treatment equipment |
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