CN115889337A - Flue gas denitration system of industrial boiler - Google Patents
Flue gas denitration system of industrial boiler Download PDFInfo
- Publication number
- CN115889337A CN115889337A CN202211582548.2A CN202211582548A CN115889337A CN 115889337 A CN115889337 A CN 115889337A CN 202211582548 A CN202211582548 A CN 202211582548A CN 115889337 A CN115889337 A CN 115889337A
- Authority
- CN
- China
- Prior art keywords
- flue
- flue gas
- denitration
- blockage
- catalyst module
- 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.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000003546 flue gas Substances 0.000 title claims abstract description 73
- 239000003054 catalyst Substances 0.000 claims abstract description 104
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims description 40
- 238000010926 purge Methods 0.000 claims description 33
- 238000007664 blowing Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000007789 sealing Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 210000003437 trachea Anatomy 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The application relates to an industrial boiler flue gas denitration system, which is applied to the field of flue gas denitration technology. The device comprises a hearth, a flue, a dust remover and an induced draft fan which are sequentially connected in series, wherein a superheater, a front heat exchange surface, a rectification grid and a rear heat exchange surface are arranged in the flue, the flue is communicated with an ammonia supply pipeline, and one side of the ammonia supply pipeline, which is far away from the rectification grid, is communicated with an external ammonia production system; also comprises a blockage cleaning cover, a blockage cleaning device and a pair of denitration devices, wherein the blockage cleaning cover is arranged on the flue, the pair of denitration devices are sequentially arranged along the advancing direction of the flue gas and are positioned between the rectification grating and the rear heat exchange surface; the denitration device comprises a bearing frame, a honeycomb denitration catalyst module and a driving mechanism, wherein a pair of through holes are formed in the flue, one bearing frame is positioned in the flue, and the other bearing frame is positioned in the blockage removing cover; the blockage removing device comprises a blockage removing mechanism and an ash conveying mechanism, and the blockage removing mechanism is communicated with an external pressure air source. This application has the effect that improves the holistic denitration efficiency of flue gas denitration system.
Description
Technical Field
The application relates to the field of flue gas denitration technology, in particular to an industrial boiler flue gas denitration system.
Background
The industrial boiler products are divided into two types of steam or gas supply, and are mostly used for thermal power plants, ships, locomotives and industrial and mining enterprises. In the process of generating electricity by using a coal-fired boiler, a large amount of flue gas is generated, and the flue gas usually contains a large amount of atmospheric pollutants, such as nitrogen oxides and sulfur oxides, so that the flue gas must be subjected to desulfurization and denitrification treatment before being discharged into the atmosphere to meet the requirement of environmental protection.
Industrial boiler flue gas denitration system among the correlation technique is including the furnace, flue, dust remover and the draught fan that concatenate in proper order, is equipped with over heater, preceding heat transfer surface, rectification grid, denitration reactor and back heat transfer surface along flue gas advancing direction in the flue in proper order, and the position intercommunication that lies in between preceding heat transfer surface and the rectification grid on the flue supplies the ammonia pipeline, supplies the ammonia pipeline to keep away from one side and external ammonia system intercommunication of making of rectification grid. The denitration reactor includes the casing, locate denitration catalyst in the casing and be used for the trachea that denitration catalyst blown the ash, and the axial one end of trachea is sealed and is fixed in on the shells inner wall, sets up a plurality of orifice on the tracheal periphery, and the axial other end of trachea links to each other with the pulse soot blower, and the pulse soot blower is installed in the outside of casing. Ammonia gas with a certain temperature enters the rectification grid through the ammonia supply pipeline and then is sprayed into the flue from the rectification grid to be mixed with the flue gas, the flue gas and the ammonia gas pass through the denitration reactor, the denitration catalyst promotes the flue gas to react with the ammonia gas, and nitrogen oxides in the flue gas are reduced into nitrogen and water, so that the nitrogen oxides in the discharged flue gas reach the standard.
In view of the above-mentioned related technologies, the inventor thinks that in the flue gas denitration system of the industrial boiler, the denitration catalyst is blown and cleaned by the gas pipe, so that the problem that the flue gas cleaning effect of the gas on the denitration catalyst far away from the gas pipe is poor exists, the contact area between the flue gas and the ammonia gas of the flue gas of the denitration catalyst far away from the gas pipe is easily reduced, and the overall flue gas denitration efficiency is reduced.
Disclosure of Invention
In order to improve the clear stifled effect of pore of denitration catalyst far away from the trachea relatively poor, lead to the problem of holistic flue gas denitration efficiency reduction easily, this application provides an industrial boiler flue gas denitration system.
The application provides a pair of industrial boiler flue gas denitration system adopts following technical scheme:
the utility model provides an industrial boiler flue gas denitration system, is including furnace, flue, dust remover and the draught fan that concatenates in proper order, is equipped with over heater, preceding heat-transfer surface, rectification grid and back heat-transfer surface in proper order along flue gas advancing direction in the flue, and the position intercommunication that lies in between preceding heat-transfer surface and the rectification grid on the flue has the confession ammonia pipeline, and the ammonia pipeline is kept away from one side and external ammonia system intercommunication of rectification grid. The flue gas purification device comprises a flue, a rectification grid and a rear heat exchange surface, and is characterized by also comprising a blockage clearing cover, a blockage clearing device and a pair of denitration devices, wherein the blockage clearing cover is arranged on the flue, the pair of denitration devices are sequentially arranged along the advancing direction of flue gas, and the pair of denitration devices are positioned between the rectification grid and the rear heat exchange surface;
the denitration device comprises a bearing frame, a honeycomb denitration catalyst module arranged in the bearing frame and a driving mechanism arranged in a blockage removing cover, wherein a pair of through holes are formed in the part, located in the blockage removing cover, of the flue, the driving mechanism is used for driving the bearing frame to penetrate through the through holes, one bearing frame is located in the flue, and the other bearing frame is located in the blockage removing cover;
the blockage removing device comprises a blockage removing mechanism for removing blockage of each pore channel of the honeycomb denitration catalyst module and an ash conveying mechanism for conveying ash, the blockage removing mechanism is arranged in the blockage removing cover and positioned above the pair of bearing frames, and the blockage removing mechanism is communicated with an external pressure air source;
one end of the ash conveying mechanism is communicated with the bottom of the blockage removing cover, and the other end of the ash conveying mechanism is communicated with the part of the flue, which is positioned between the rear heat exchange surface and the dust remover.
By adopting the technical scheme, one of the two honeycomb denitration catalyst modules is positioned in the flue to catalyze the reaction of ammonia gas and flue gas, and the other honeycomb denitration catalyst module is positioned in the blockage removing cover for later use. When the used honeycomb denitration catalyst module needs to be cleaned, the driving mechanism of the standby denitration device is started, the standby honeycomb denitration catalyst module is sent into the flue, then the driving mechanism of the used denitration device is started, the honeycomb denitration catalyst module needing to be cleaned is moved into the blockage removing cover, and at the moment, the standby honeycomb denitration catalyst module is changed from the standby state to the use state, so that the denitration of the flue gas can be kept continuous.
After the honeycomb type denitration catalyst module needing ash removal enters the blockage clearing cover, the blockage clearing mechanism and the ash conveying mechanism are started, and each pore of the honeycomb type denitration catalyst module is cleared and blocked by the blockage clearing mechanism, so that the integral ash removal effect of the honeycomb type denitration catalyst module can be improved, the contact area of ammonia gas and flue gas with the honeycomb type denitration catalyst module is increased, and the integral denitration efficiency of a flue gas denitration system can be improved. The cleaned ash is conveyed to the dust remover through the ash conveying mechanism, and the flue gas and the ash are separated through the dust remover.
Optionally, the blockage clearing mechanism comprises a purging component for purging the honeycomb denitration catalyst module and a lifting component for driving the purging component to lift, the lifting component is arranged on the blockage clearing cover, one end of the purging component is connected with an external pressure air source, and the other end of the purging component extends to the position above the honeycomb denitration catalyst module.
Through adopting above-mentioned technical scheme, can drive through lifting unit and sweep the subassembly and go up and down, make to sweep the subassembly and can move to the position department that is located the honeycomb formula denitration catalyst module of below, blow the ash to honeycomb formula denitration catalyst module to improve honeycomb formula denitration catalyst module's deashing effect.
Optionally, the purging assembly comprises a main air supply hose, a plurality of branch air supply hoses, purging pipes and a purging head arranged on the purging pipes, the purging head is provided with spray holes, the purging pipes are arranged on the lifting assembly, and the purging pipes are arranged in a manner of being aligned to the hole channels of the honeycomb denitration catalyst module one by one;
the one end and the external pressure air supply of main air feed hose are connected, the other end of main air feed hose is set up in the mouth that closes, and is a plurality of branch air feed hose all with main air feed hose intercommunication, the other end one-to-one of branch air feed hose with sweep the pipe intercommunication.
By adopting the technical scheme, when the channel of the honeycomb denitration catalyst module is subjected to ash removal, the lifting assembly drives the purging pipe to descend, so that the purging pipe and the purging head correspondingly extend into the channel of the honeycomb denitration catalyst module one by one. And meanwhile, an external pressure air source is opened, so that the pressure air sweeps the pore wall of the honeycomb type denitration catalyst module from top to bottom, the ash removal can be carried out on the pore wall of the honeycomb type denitration catalyst module more comprehensively, and the integral ash removal effect of the honeycomb type denitration catalyst module can be improved.
Optionally, the lifting assembly comprises a cylinder and a lifting plate arranged on the output end of the cylinder, the cylinder is arranged on the top wall of the blockage removing cover, and the plurality of purging pipes penetrate through the lifting plate and are connected with the lifting plate.
Through adopting above-mentioned technical scheme, go up and down through cylinder drive lifter plate, make sweeping head and sweep the pore of pipe can stretch into or shift out honeycomb formula denitration catalyst module.
Optionally, clear stifled mechanism still includes a plurality of clear stifled subassemblies, clear stifled subassembly includes even pipe, even board and locates a plurality of scrapers on even board, even pipe is located sweep overhead, even board is located even manage, the scraper with the pore wall of honeycomb formula denitration catalyst module is laminated mutually.
Through adopting above-mentioned technical scheme, pressure gas sweeps before the pore of honeycomb formula denitration catalyst module, strikes off the deposition on the pore wall of honeycomb formula denitration catalyst module through the scraper, then sweeps through pressure gas to can improve the deashing effect to honeycomb formula denitration catalyst module, increase the area of contact of flue gas and ammonia and honeycomb formula denitration catalyst module, and then can improve denitration efficiency.
Optionally, even pipe, even board and a plurality of the scraper is cavity setting, even pipe with the purge head intercommunication, even the board simultaneously with even pipe with the scraper intercommunication, the scraper dorsad one side of the pore canal wall of honeycomb formula denitration catalyst module is equipped with a plurality of gas pockets.
Through adopting above-mentioned technical scheme, pressure gas blows off from the gas pocket through connecting pipe, even board, scraper, can reduce the possibility that the ash is attached to on the scraper to can reduce the scraper deposition influence to the possibility of the deashing effect of the pore wall of honeycomb formula denitration catalyst module, make the deashing effect of scraper better.
Optionally, one side of the scraper facing the pore wall of the honeycomb type denitration catalyst module is provided with a convex pattern, and the convex pattern is attached to the pore wall of the honeycomb type denitration catalyst module.
By adopting the technical scheme, the accumulated ash attached to the pore channel wall of the honeycomb denitration catalyst module is loosened through the convex patterns, so that the accumulated ash is blown by pressure gas more easily, and the ash removal effect on the pore channel wall of the honeycomb denitration catalyst module can be further improved.
Optionally, the driving mechanism includes a driving motor, a driving plate, a transmission assembly and a pair of screws, the lifting plate is located between the pair of screws, the screws are rotatably connected between a pair of side walls of the blockage removing cover, the driving plate is disposed on the bearing frame, and the driving plate is simultaneously in threaded connection with the pair of screws;
the driving motor is arranged on the blockage removing cover, an output shaft of the driving motor is connected with one of the screw rods, one end of the transmission assembly is connected to one of the screw rods, and the other end of the transmission assembly is connected to the other screw rod.
Through adopting above-mentioned technical scheme, under transmission assembly's effect, can drive a pair of screw rod synchronous revolution through driving motor to can make the drive plate move towards the direction of keeping away from or being close to the flue, send honeycomb formula denitration catalyst module into the flue, or remove to in the clear stifled cover from the flue.
Optionally, a sealing plate is arranged on one side, back to the blockage removing cover, of the bearing frame, the sealing plate located on the bearing frame in the blockage removing cover is attached to the inner wall, close to the side wall of the blockage removing cover, of the flue, and the driving plate located on the bearing frame in the flue is attached to the outer wall, close to the side wall of the blockage removing cover, of the flue.
Through adopting above-mentioned technical scheme, can seal the through-hole through closing plate and drive plate to reduce the deashing in-process, flue gas in the flue gets into influences the possibility of honeycomb formula denitration catalyst module deashing in the clear stifled cover.
Optionally, the bearing frame is provided with a plurality of guide edges, the inner wall of the flue is provided with a plurality of bearing plates, the bearing plates are provided with guide grooves for the guide edges to slide in a matched manner, and the guide edges are arranged in the guide grooves in a one-to-one correspondence manner.
Through adopting above-mentioned technical scheme, through direction arris and guide way looks adaptation, make the fixing in the flue that the bearing frame can be more stable, make honeycomb formula denitration catalyst module can be better catalyze flue gas and ammonia.
In summary, the present application includes at least one of the following benefits:
1. the cleaning and blocking of each pore channel of the honeycomb type denitration catalyst module are carried out through the purging component and the cleaning and blocking component, so that the integral dust cleaning effect of the honeycomb type denitration catalyst module can be improved, the contact area of ammonia gas and flue gas with the honeycomb type denitration catalyst module is increased, and the integral denitration effect of a flue gas denitration system can be improved;
2. when the used honeycomb denitration catalyst module needs to be cleaned, the standby honeycomb denitration catalyst module is firstly sent into a flue, and then the honeycomb denitration catalyst module needing to be cleaned is moved into a blockage removing cover, so that the denitration of flue gas can be kept continuous;
3. the through hole can be sealed through the sealing plate and the driving plate, so that the possibility that flue gas in a flue enters the blocking cover to influence the ash removal of the honeycomb denitration catalyst module in the ash removal process is reduced.
Drawings
FIG. 1 is a schematic diagram of an industrial boiler flue gas denitration system in the embodiment of the application.
FIG. 2 is a partial view of a front cross-sectional view of a flue and a clean out hood in an embodiment of the present application.
FIG. 3 is a top cross-sectional view of a flue and a clean out hood in an embodiment of the present application.
Fig. 4 is an enlarged view of a portion a in fig. 2.
Fig. 5 is a cross-sectional view of a clearing assembly in an embodiment of the present application.
Reference numerals are as follows: 1. a hearth; 2. a flue; 21. a through hole; 3. a dust remover; 4. an induced draft fan; 5. clearing the blockage; 6. clearing the blockage; 61. a blockage clearing mechanism; 611. a purge assembly; 6111. a main air supply hose; 6112. a branch air supply hose; 6113. a purge tube; 6114. a sweeping head; 612. clearing the blockage component; 6121. connecting pipes; 6122. connecting plates; 6123. a scraper; 61231. air holes; 6124. a relief pattern; 613. a lifting assembly; 6131. a cylinder; 6132. a lifting plate; 62. a dust conveying mechanism; 621. an ash conveying pipe; 622. an ash conveying fan; 7. a denitration device; 71. a load-bearing frame; 72. a honeycomb denitration catalyst module; 73. a sealing plate; 74. a guide edge; 75. a drive mechanism; 751. a drive motor; 752. a drive plate; 753. a transmission assembly; 7531. a sprocket; 7532. a chain; 754. a screw; 8. a support plate; 81. a guide groove; 9. a superheater; 10. a front heat exchange surface; 11. a rectifying grid; 12. a rear heat exchange surface; 13. an ammonia supply pipeline.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses industrial boiler flue gas denitration system. Referring to fig. 1, the flue gas denitration system of the industrial boiler comprises a hearth 1, a flue 2, a dust remover 3 and an induced draft fan 4 which are sequentially connected in series, wherein a blockage removing cover 5 is fixed on the flue 2, and an access door is installed on the blockage removing cover 5. The flue 2 is internally provided with a superheater 9, a front heat exchange surface 10, a rectification grid 11, a pair of denitration devices 7 and a rear heat exchange surface 12 in sequence along the flue gas advancing direction, the position of the flue 2 between the front heat exchange surface 10 and the rectification grid 11 is communicated with an ammonia supply pipeline 13, and one side of the ammonia supply pipeline 13, which is far away from the rectification grid 11, is communicated with an external ammonia production system.
Ammonia gas enters the flue 2 from the ammonia supply pipeline 13, the ammonia gas is uniformly distributed through the rectifying grating 11 and then is sprayed into the flue 2 more uniformly, and flue gas generated by combustion is mixed with the ammonia gas after passing through the heater 9, the front heat exchange surface 10 and the rectifying grating 11. The flue gas and the ammonia gas are catalyzed by the denitration device 7 to remove nitrogen oxides, and the purified flue gas flows through the rear heat exchange surface 12 to enter the dust remover 3 for soot separation.
Referring to fig. 2 and 3, the denitration apparatus 7 includes a bearing frame 71, a honeycomb denitration catalyst module 72, a sealing plate 73, a driving mechanism 75 and a plurality of guide ribs 74, wherein the honeycomb denitration catalyst module 72 is fixed in the bearing frame 71, and the sealing plate 73 is fixed on the side of the bearing frame 71 facing away from the blockage removing cover 5. In this embodiment, the number of the guide ribs 74 is two, for example, the guide ribs 74 are fixed on two side walls of the bearing frame 71 in a one-to-one correspondence, and the sealing plate 73 is located between a pair of bearing frames 71. The inner wall of the flue 2 is fixed with a plurality of bearing plates 8, the bearing plates 8 are provided with guide grooves 81 for the guide ribs 74 to slide in a matching way, and the guide ribs 74 are placed in the guide grooves 81 in a one-to-one correspondence manner, so that the bearing frame 71 can be more stably fixed in the flue 2, and the honeycomb denitration catalyst module 72 can better catalyze the reaction of flue gas and ammonia gas.
The flue 2 is provided with a pair of through holes 21 at the position in the blockage removing cover 5, the driving mechanism 75 is arranged in the blockage removing frame, and the bearing frame 71 can be moved into the blockage removing cover 5 through the through holes 21 by the driving mechanism 75. The blockage cleaning device 6 for cleaning ash of the honeycomb denitration catalyst modules 72 is installed in the blockage cleaning cover 5, in the operation process of the boiler, one honeycomb denitration catalyst module 72 is located in the flue 2 and catalyzes the reaction of flue gas and ammonia gas, and the other honeycomb denitration catalyst module 72 is located in the blockage cleaning cover 5 and is reserved after blockage cleaning by the blockage cleaning device 6.
Referring to fig. 2 and 3, the driving mechanism 75 includes a driving motor 751, a driving plate 752, a transmission assembly 753, and a pair of screws 754, wherein the driving plate 752 is fixed on a side of the bearing frame 71 facing the unblocking cover 5, and the driving plate 752 is simultaneously screwed on the pair of screws 754. The screw rod 754 is rotatably connected between the pair of side walls of the blockage removing cover 5, one end of the screw rod 754, which is far away from the bearing frame 71, penetrates through the side walls of the blockage removing cover 5, the transmission assembly 753 comprises a chain 7532 and a pair of chain wheels 7531, the chain wheels 7531 are coaxially connected to the screw rod 754 in a one-to-one correspondence mode, and the chain 7532 is wound on the pair of chain wheels 7531 at the same time. The driving motor 751 is located outside the blockage removing cover 5 and fixed on the blockage removing cover 5 through a frame, an output shaft of the driving motor 751 is coaxially connected with one of the screws 754, and the pair of screws 754 can simultaneously rotate under the transmission action of the chain 7532, so that the driving plate 752 can move towards the direction close to or away from the flue 2, and the honeycomb denitration catalyst module 72 is fed into the flue 2 or moved into the blockage removing cover 5.
Referring to fig. 2 and 3, the sealing plate 73 on the bearing frame 71 in the flue 2 abuts against the side wall of the flue 2 far away from the blockage removing cover 5, the driving plate 752 on the bearing frame 71 in the flue 2 abuts against the outer wall of the side wall of the flue 2 near the blockage removing cover 5, and the sealing plate 73 on the bearing frame 71 in the blockage removing cover 5 abuts against the inner wall of the side wall of the flue 2 near the blockage removing cover 5. The through hole 21 is sealed by the driving plate 752 and the sealing plate 73, so that the possibility that the flue gas in the flue 2 enters the blockage removing cover 5 to affect the ash removal of the honeycomb denitration catalyst module 72 in the ash removal process can be reduced.
When the honeycomb denitration catalyst module 72 in use in the flue 2 needs to be cleaned, the driving motor 751 of the standby denitration device 7 in the blockage removing cover 5 is started, the standby honeycomb denitration catalyst module 72 is sent into the flue 2, and the driving plate 752 abuts against the outer wall of the flue 2. Then, the driving motor 751 of the denitration device 7 in use is started to move the honeycomb denitration catalyst module 72 requiring ash removal into the blockage removing cover 5 and make the sealing plate 73 abut against the inner wall of the flue 2, and at this time, the standby honeycomb denitration catalyst module 72 is changed from the standby state to the use state. After entering the blocking cleaning cover 5, the honeycomb denitration catalyst module 72 which needs to be cleaned is cleaned by the blocking cleaning device 6 for standby, and the circulation is carried out, so that the denitration of the flue gas can be kept continuous.
Referring to fig. 1 and 2, the blockage removing device 6 comprises a blockage removing mechanism 61 and an ash conveying mechanism 62, the ash conveying mechanism 62 comprises an ash conveying pipe 621 and an ash conveying fan 622 installed on the ash conveying pipe 621, one end of the ash conveying pipe 621 is communicated with the bottom of the blockage removing cover 5, the other end of the ash conveying pipe 621 is communicated with a part of the flue 2 between the rear heat exchange surface 12 and the dust remover 3, and ash cleaned by the blockage removing mechanism 61 from the honeycomb type denitration catalyst module 72 can be conveyed to the dust remover 3 through the ash conveying fan 622 to separate smoke from the ash.
Referring to fig. 2 and 4, the blockage removing mechanism 61 includes a lifting assembly 613, a purging assembly 611 and a plurality of blockage removing assemblies 612, the lifting assembly 613 includes a cylinder 6131 and a lifting plate 6132 fixed on an output end of the cylinder 6131, the lifting plate 6132 is located between a pair of screws 754, the cylinder 6131 is installed on a top wall of the blockage removing cover 5, in this embodiment, the cylinder 6131 adopts a multi-stage and multi-section cylinder 6131, so as to reduce the volume of the blockage removing cover 5. The purging component 611 is fixed on the lifting component 613, the blockage cleaning components 612 are fixed on the purging component 611, and the blockage cleaning components 612 are located above the honeycomb type denitration catalyst module 72 and are arranged opposite to the pore channels of the honeycomb type denitration catalyst module 72. The cylinder 6131 drives the lifting plate 6132 to descend, so that the blowing component 611 and the blockage removing component 612 can extend into the pore channel of the honeycomb denitration catalyst module 72 to remove ash from the honeycomb denitration catalyst module 72.
Referring to fig. 2 and 4, the blowing assembly 611 includes a main air supply hose 6111, a plurality of branch air supply hoses 6112, a blowing pipe 6113 and a blowing head 6114, wherein the blowing head 6114 is densely distributed with spray holes, one end of the main air supply hose 6111 is connected to an external pressure air source, and the other end of the main air supply hose 6111 is closed. One end of each of the plurality of air supply hoses 6112 is communicated with the main air supply hose 6111, the other end is communicated with the rigid blowing pipes 6113 in a one-to-one correspondence manner, the rigid blowing pipes 6113 penetrate through the lifting plate 6132 and are fixed on the lifting plate 6132, the blowing head 6114 is communicated with one end of each of the blowing pipes 6113, which is far away from the corresponding air supply branch pipe, the blockage cleaning assemblies 612 are communicated with the blowing heads 6114 in a one-to-one correspondence manner, and the flexible main air supply hose 6111 and the corresponding air supply hose 6112 enable the blowing pipes 6113 to be lifted synchronously along with the lifting plate 6132.
During ash removal, an external pressure air source is opened, the air cylinder 6131 is started, the blockage removing assembly 612 firstly extends into the pore channel of the honeycomb type denitration catalyst module 72 for preliminary ash removal, then the gas with pressure enters the blowing head 6114 through the main gas supply hose 6111, the branch gas supply hose 6112 and the blowing pipe 6113 and is sprayed out from the spray holes to blow ash on the pore channel wall of the honeycomb type denitration catalyst module 72. Along with the descending of the lifting plate 6132, the blockage clearing component 612 and the pressurized gas can more comprehensively clear the ash on the pore channel wall of the honeycomb type denitration catalyst module 72, so that the integral ash clearing effect of the honeycomb type denitration catalyst module 72 can be improved, the contact area between ammonia gas and flue gas and the honeycomb type denitration catalyst module 72 is increased, and the integral denitration efficiency of a flue gas denitration system can be improved.
In addition, because the volume of the ash particles is small and the hardness is low, the possibility that the ash particles influence the screw 754 to move the driving plate 752 is low, and in the process that the air cylinder 6131 drives the lifting plate 6132 to lift, the blowing head 6114 is already in an air injection state, so that the surface of the screw 754 can be blown, and the possibility that the ash in the thread of the screw 754 influences the movement of the driving plate 752 can be further reduced.
Referring to fig. 4 and 5, the blockage removing assembly 612 includes a connecting pipe 6121, a connecting plate 6122 and a plurality of scrapers 6123 which are arranged in a hollow manner, one end of the connecting pipe 6121 is communicated with the blowing head 6114, the other end of the connecting pipe 6121 is communicated with the connecting plate 6122, the scrapers 6123 are communicated with the connecting plate 6122, in this embodiment, the number of the scrapers 6123 is four, and the four scrapers 6123 are formed in the same shape as the pore channel of the denitration catalyst module. A plurality of air holes are formed in one side, opposite to the pore wall of the honeycomb denitration catalyst module 72, of the scraper 6123, a convex pattern 6124 is fixed on one side, facing the pore wall of the honeycomb denitration catalyst module 72, of the scraper 6123, and the convex pattern 6124 is attached to the pore wall of the honeycomb denitration catalyst module.
In the process that the purging tube 6113 moves down in the pore channel of the honeycomb denitration catalyst module 72, the scraper 6123 first scrapes the pore channel wall of the honeycomb denitration catalyst module 72, and meanwhile, the pressure gas is blown out from the air holes through the connecting tube 6121, the connecting plate 6122 and the scraper 6123 to purge the deposited ash attached to the scraper 6123, so that the possibility that the ash deposition of the scraper 6123 is reduced, and the ash removal effect on the pore channel wall of the honeycomb denitration catalyst module 72 is reduced. The ribs 6124 then loosen the ash that is not easily dislodged from the walls of the channels of the honeycomb denitration catalyst module 72, thereby making it easier for the pressurized gas to blow the ash. After the scraper 6123 and the convex pattern 6124 clean the pore walls of the honeycomb type denitration catalyst module 72, the pressurized gas sweeps the pore walls of the honeycomb type denitration catalyst module 72, so that the ash of the pore walls of each honeycomb type denitration catalyst module 72 can be cleaned better, the contact area of flue gas and ammonia gas with the honeycomb type denitration catalyst module 72 can be increased, and the integral denitration efficiency of a flue gas denitration system is improved.
The embodiment of the application provides an industrial boiler flue gas denitration system's implementation principle does: in the process that the purging pipe 6113 moves down in the pore channel of the honeycomb type denitration catalyst module 72, the scraper 6123 firstly scrapes the wall of the pore channel of the honeycomb type denitration catalyst module 72, and meanwhile, pressure gas is blown out from the air hole to purge dust attached to the scraper 6123. Then, after the accumulated ash attached to the pore wall of the honeycomb denitration catalyst module 72 and not easy to fall off is loosened by the convex pattern 6124, the pressurized gas sweeps the pore wall of the honeycomb denitration catalyst module 72, so that ash can be better removed from the pore wall of each honeycomb denitration catalyst module 72, the contact area between the flue gas and the ammonia gas and the honeycomb denitration catalyst module 72 can be increased, and the integral denitration efficiency of the flue gas denitration system is improved.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An industrial boiler flue gas denitration system comprises a hearth (1), a flue (2), a dust remover (3) and an induced draft fan (4) which are sequentially connected in series, wherein a superheater (9), a front heat exchange surface (10), a rectification grid (11) and a rear heat exchange surface (12) are sequentially arranged in the flue (2) along the flue gas advancing direction, an ammonia supply pipeline (13) is communicated with the position, located between the front heat exchange surface (10) and the rectification grid (11), on the flue (2), and one side, away from the rectification grid (11), of the ammonia supply pipeline (13) is communicated with an external ammonia production system;
the method is characterized in that: the flue gas denitration device is characterized by further comprising a blockage clearing cover (5), a blockage clearing device (6) and a pair of denitration devices (7), wherein the blockage clearing cover (5) is arranged on the flue (2), the pair of denitration devices (7) are sequentially arranged along the advancing direction of flue gas, and the pair of denitration devices (7) are located between the rectifying grating (11) and the rear heat exchange surface (12);
the denitration device (7) comprises a bearing frame (71), a honeycomb denitration catalyst module (72) arranged in the bearing frame (71) and a driving mechanism (75) arranged in a blockage clearing cover (5), a pair of through holes (21) are formed in the part, located in the blockage clearing cover (5), of the flue (2), the driving mechanism (75) is used for driving the bearing frame (71) to penetrate through the through holes (21), one bearing frame (71) is located in the flue (2), and the other bearing frame (71) is located in the blockage clearing cover (5);
the blockage removing device (6) comprises a blockage removing mechanism (61) for removing blockage of each pore channel of the honeycomb type denitration catalyst module (72) and an ash conveying mechanism (62) for conveying ash, the blockage removing mechanism (61) is arranged in the blockage removing cover (5) and is positioned above the pair of bearing frames (71), and the blockage removing mechanism (61) is communicated with an external pressure air source;
one end of the ash conveying mechanism (62) is communicated with the bottom of the blockage removing cover (5), and the other end of the ash conveying mechanism (62) is communicated with the part of the flue (2) between the rear heat exchange surface (12) and the dust remover (3).
2. The flue gas denitration system of the industrial boiler according to claim 1, characterized in that: the blockage removing mechanism (61) comprises a purging component (611) used for purging the honeycomb denitration catalyst module (72) and a lifting component (613) used for driving the purging component (611) to lift, the lifting component (613) is arranged on the blockage removing cover (5), one end of the purging component (611) is connected with an external pressure air source, and the other end of the purging component (611) extends to the position above the honeycomb denitration catalyst module (72).
3. The flue gas denitration system of the industrial boiler according to claim 2, characterized in that: the blowing component (611) comprises a main air supply hose (6111), a plurality of branch air supply hoses (6112), blowing pipes (6113) and a blowing head (6114) arranged on the blowing pipes (6113), wherein spray holes are formed in the blowing head (6114), the blowing pipes (6113) are arranged on the lifting component (613), and the blowing pipes (6113) are arranged opposite to the hole channels of the honeycomb type denitration catalyst module (72) one by one;
one end of the main air supply hose (6111) is connected with an external pressure air source, the other end of the main air supply hose (6111) is arranged in a closed manner, a plurality of branch air supply hoses (6112) are communicated with the main air supply hose (6111), and the other ends of the branch air supply hoses (6112) are communicated with the purging pipes (6113) in a one-to-one correspondence manner.
4. The flue gas denitration system of the industrial boiler according to claim 3, characterized in that: the lifting assembly (613) comprises an air cylinder (6131) and a lifting plate (6132) arranged on the output end of the air cylinder (6131), the air cylinder (6131) is arranged on the top wall of the blockage removing cover (5), and the plurality of blowing pipes (6113) penetrate through the lifting plate (6132) and are connected with the lifting plate (6132).
5. The industrial boiler flue gas denitration system of claim 3, characterized in that: clear stifled mechanism (61) still includes a plurality of clear stifled subassemblies (612), clear stifled subassembly (612) include even pipe (6121), link board (6122) and locate a plurality of scrapers (6123) on linking board (6122), link pipe (6121) is located on blowing head (6114), link board (6122) is located on linking pipe (6121), scraper (6123) with the pore canal wall laminating of honeycomb formula denitration catalyst module (72).
6. The flue gas denitration system of the industrial boiler according to claim 5, characterized in that: the connecting pipe (6121), the connecting plate (6122) and the scrapers (6123) are arranged in a hollow mode, the connecting pipe (6121) is communicated with the blowing head (6114), the connecting plate (6122) is communicated with the connecting pipe (6121) and the scrapers (6123) at the same time, and a plurality of air holes are formed in one side, facing away from the hole channel wall of the honeycomb type denitration catalyst module (72), of each scraper (6123).
7. The flue gas denitration system of the industrial boiler according to claim 5, characterized in that: one side of the scraper (6123) facing the pore channel wall of the honeycomb type denitration catalyst module (72) is provided with a convex pattern (6124), and the convex pattern (6124) is attached to the pore channel wall of the honeycomb type denitration catalyst module (72).
8. The industrial boiler flue gas denitration system of claim 4, characterized in that: the driving mechanism (75) comprises a driving motor (751), a driving plate (752), a transmission assembly (753) and a pair of screws (754), the lifting plate (6132) is positioned between the pair of screws (754), the screws (754) are rotatably connected between a pair of side walls of the blockage removing cover (5), the driving plate (752) is arranged on the bearing frame (71), and the driving plate (752) is simultaneously in threaded connection with the pair of screws (754);
the driving motor (751) is arranged on the blockage removing cover (5), an output shaft of the driving motor (751) is connected with one of the screw rods (754), one end of the transmission assembly (753) is connected with one of the screw rods (754), and the other end of the transmission assembly (753) is connected with the other screw rod (754).
9. The industrial boiler flue gas denitration system of claim 8, characterized in that: bearing frame (71) dorsad one side of clear stifled cover (5) is equipped with closing plate (73), be located closing plate (73) on bearing frame (71) in clear stifled cover (5) with flue (2) are close to the inner wall of the lateral wall of clear stifled cover (5) and laminate mutually, be located drive plate (752) on bearing frame (71) in flue (2) with flue (2) are close to the outer wall of the lateral wall of clear stifled cover (5) and laminate mutually.
10. The flue gas denitration system of the industrial boiler according to claim 1, characterized in that: bearing frame (71) is equipped with a plurality of direction arriss (74), be equipped with a plurality of bearing board (8) on the inner wall of flue (2), be equipped with the confession on bearing board (8) guide way (81) that direction arris (74) cooperation was slided, direction arris (74) one-to-one is arranged in guide way (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582548.2A CN115889337A (en) | 2022-12-09 | 2022-12-09 | Flue gas denitration system of industrial boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582548.2A CN115889337A (en) | 2022-12-09 | 2022-12-09 | Flue gas denitration system of industrial boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115889337A true CN115889337A (en) | 2023-04-04 |
Family
ID=86493682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211582548.2A Pending CN115889337A (en) | 2022-12-09 | 2022-12-09 | Flue gas denitration system of industrial boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115889337A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116764435A (en) * | 2023-08-17 | 2023-09-19 | 山西毅诚科信科技有限公司 | Flue gas SCR denitration mixing reaction device |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001113131A (en) * | 1999-10-14 | 2001-04-24 | Research Institute Of Innovative Technology For The Earth | Method for regenerating denitration catalyst |
| US20060127286A1 (en) * | 2004-12-14 | 2006-06-15 | Underwood James M | Catalyst cleaning tool |
| CN202706996U (en) * | 2012-08-22 | 2013-01-30 | 克拉玛依市金牛工程建设有限责任公司 | Scraper type high-pressure water jet spray head |
| CN104588129A (en) * | 2014-12-31 | 2015-05-06 | 安科智慧城市技术（中国）有限公司 | Dry-process regeneration system and method of honeycomb type denitration catalyst module |
| CN107185908A (en) * | 2017-05-10 | 2017-09-22 | 哈尔滨工程大学 | A kind of soot blower and ash-blowing method in denitrating system rectangle reaction unit peculiar to vessel |
| CN207221565U (en) * | 2017-09-22 | 2018-04-13 | 深圳朋凯印刷有限公司 | A kind of exhaust system of printing press |
| CN208032316U (en) * | 2018-01-26 | 2018-11-02 | 西纯环保科技（上海）有限公司 | A kind of device carrying out denitrating flue gas using the escaping of ammonia |
| CN208356518U (en) * | 2018-03-27 | 2019-01-11 | 易能环境技术有限公司 | A kind of equipment for denitrifying flue gas |
| CN109364740A (en) * | 2018-10-31 | 2019-02-22 | 浙江世野节能环保科技有限公司 | A kind of SCR boiler flue gas denitration system |
| CA3009235A1 (en) * | 2017-09-26 | 2019-03-26 | Exair Corporation | Gas-assisted scraping tool |
| CN209303355U (en) * | 2018-12-25 | 2019-08-27 | 国电科学技术研究院有限公司 | A kind of SCR denitration system can retreat formula soot blower |
| CN210021736U (en) * | 2019-04-20 | 2020-02-07 | 平湖弘欣热电有限公司 | Ash removal device of SCR reactor |
| CN211133558U (en) * | 2019-09-19 | 2020-07-31 | 彩虹集团有限公司 | SCR automatic ash removal device of TFT glass kiln flue gas treatment system |
| CN213913157U (en) * | 2020-08-27 | 2021-08-10 | 无锡锡玉环保科技有限公司 | SCR denitration reactor |
| CN215962973U (en) * | 2021-06-25 | 2022-03-08 | 山东水发资源循环科技有限公司 | Prevent that denitration SCR catalyst from blockking up sweeps device |
| CN114226353A (en) * | 2021-12-17 | 2022-03-25 | 安徽远达催化剂有限公司 | Low temperature denitration catalyst regenerating unit |
| CN216358931U (en) * | 2021-11-03 | 2022-04-22 | 苏州西热节能环保技术有限公司 | Dry ash removal system for SCR denitration catalyst module |
| CN216935494U (en) * | 2021-12-30 | 2022-07-12 | 陕西环保新能源有限公司 | Novel semi-automatic old and useless SCR honeycomb denitration catalyst deashing device |
| CN217220886U (en) * | 2022-03-16 | 2022-08-19 | 宜兴市华瑞焚烧炉科技发展有限公司 | Ash removal device for low-temperature SCR denitration honeycomb catalyst for flue gas of incinerator |
-
2022
- 2022-12-09 CN CN202211582548.2A patent/CN115889337A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001113131A (en) * | 1999-10-14 | 2001-04-24 | Research Institute Of Innovative Technology For The Earth | Method for regenerating denitration catalyst |
| US20060127286A1 (en) * | 2004-12-14 | 2006-06-15 | Underwood James M | Catalyst cleaning tool |
| CN202706996U (en) * | 2012-08-22 | 2013-01-30 | 克拉玛依市金牛工程建设有限责任公司 | Scraper type high-pressure water jet spray head |
| CN104588129A (en) * | 2014-12-31 | 2015-05-06 | 安科智慧城市技术（中国）有限公司 | Dry-process regeneration system and method of honeycomb type denitration catalyst module |
| CN107185908A (en) * | 2017-05-10 | 2017-09-22 | 哈尔滨工程大学 | A kind of soot blower and ash-blowing method in denitrating system rectangle reaction unit peculiar to vessel |
| CN207221565U (en) * | 2017-09-22 | 2018-04-13 | 深圳朋凯印刷有限公司 | A kind of exhaust system of printing press |
| CA3009235A1 (en) * | 2017-09-26 | 2019-03-26 | Exair Corporation | Gas-assisted scraping tool |
| CN208032316U (en) * | 2018-01-26 | 2018-11-02 | 西纯环保科技（上海）有限公司 | A kind of device carrying out denitrating flue gas using the escaping of ammonia |
| CN208356518U (en) * | 2018-03-27 | 2019-01-11 | 易能环境技术有限公司 | A kind of equipment for denitrifying flue gas |
| CN109364740A (en) * | 2018-10-31 | 2019-02-22 | 浙江世野节能环保科技有限公司 | A kind of SCR boiler flue gas denitration system |
| CN209303355U (en) * | 2018-12-25 | 2019-08-27 | 国电科学技术研究院有限公司 | A kind of SCR denitration system can retreat formula soot blower |
| CN210021736U (en) * | 2019-04-20 | 2020-02-07 | 平湖弘欣热电有限公司 | Ash removal device of SCR reactor |
| CN211133558U (en) * | 2019-09-19 | 2020-07-31 | 彩虹集团有限公司 | SCR automatic ash removal device of TFT glass kiln flue gas treatment system |
| CN213913157U (en) * | 2020-08-27 | 2021-08-10 | 无锡锡玉环保科技有限公司 | SCR denitration reactor |
| CN215962973U (en) * | 2021-06-25 | 2022-03-08 | 山东水发资源循环科技有限公司 | Prevent that denitration SCR catalyst from blockking up sweeps device |
| CN216358931U (en) * | 2021-11-03 | 2022-04-22 | 苏州西热节能环保技术有限公司 | Dry ash removal system for SCR denitration catalyst module |
| CN114226353A (en) * | 2021-12-17 | 2022-03-25 | 安徽远达催化剂有限公司 | Low temperature denitration catalyst regenerating unit |
| CN216935494U (en) * | 2021-12-30 | 2022-07-12 | 陕西环保新能源有限公司 | Novel semi-automatic old and useless SCR honeycomb denitration catalyst deashing device |
| CN217220886U (en) * | 2022-03-16 | 2022-08-19 | 宜兴市华瑞焚烧炉科技发展有限公司 | Ash removal device for low-temperature SCR denitration honeycomb catalyst for flue gas of incinerator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116764435A (en) * | 2023-08-17 | 2023-09-19 | 山西毅诚科信科技有限公司 | Flue gas SCR denitration mixing reaction device |
| CN116764435B (en) * | 2023-08-17 | 2023-11-03 | 山西毅诚科信科技有限公司 | Flue gas SCR denitration mixing reaction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115889337A (en) | Flue gas denitration system of industrial boiler | |
| EP4025860A1 (en) | Reciprocating rake type soot blower system | |
| CN108393310A (en) | The system and its application method of rotary regenerative air preheater are cleaned using dry ice particles | |
| CN216986758U (en) | Heating furnace exhaust treatment device | |
| CN211204078U (en) | Heat accumulating type catalytic combustion device | |
| CN206027451U (en) | A module is dust cleaning system in advance for catalyst regeneration project | |
| CN108295606A (en) | A kind of waste incineration smoke consuming apparatus | |
| CN214809741U (en) | Multi-bin dust remover multi-bin SCR and catalyst activation integrated device | |
| CN115790190A (en) | Waste heat boiler matched with lithium battery carbon material calcining kiln | |
| CN212669526U (en) | Indirect sludge drying and incinerating system | |
| CN101890285B (en) | Rotary cleaning device for defroster of flue gas desulfurizing tower | |
| CN210845892U (en) | SCR denitration reactor | |
| CN210584473U (en) | Online ash handling equipment of deNOx systems | |
| CN210058660U (en) | Soot blower nozzle capable of automatically dredging | |
| CN210522128U (en) | Waste gas recovery and treatment system of printing and dyeing setting machine | |
| CN113230849A (en) | Multi-bin dust remover multi-bin SCR and catalyst activation integrated device and using method thereof | |
| CN210786728U (en) | Environment-friendly industrial waste gas purification device | |
| CN210409981U (en) | Coke quenching tower flue gas takes off white dust pelletizing system | |
| CN115155309B (en) | Waste incineration flue gas denitration system with catalyst capable of being regenerated on line | |
| CN110864304A (en) | Waste gas purification robot and method for incinerator | |
| CN211757304U (en) | Special purifier of reinforcing bar dish surface thermal treatment carbon dust | |
| CN213019701U (en) | Boiler dismouting structure convenient to inboard smoke and dust of clearance | |
| CN220990088U (en) | Integrated desulfurization and denitrification reactor | |
| CN104100984A (en) | Device and method for removing ash in smoke box of waste heat boiler | |
| CN115307172B (en) | Environment-friendly boiler flue gas waste heat recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |