CN216558488U - Ash removal device - Google Patents
Ash removal device Download PDFInfo
- Publication number
- CN216558488U CN216558488U CN202123451170.6U CN202123451170U CN216558488U CN 216558488 U CN216558488 U CN 216558488U CN 202123451170 U CN202123451170 U CN 202123451170U CN 216558488 U CN216558488 U CN 216558488U
- Authority
- CN
- China
- Prior art keywords
- ash
- air
- deashing
- pipe group
- air pipe
- 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
- Incineration Of Waste (AREA)
Abstract
The application relates to a dust cleaning device, which relates to the technical field of air preheaters and comprises a dust cleaner arranged on an air pipe group of an air preheater; the ash remover comprises a first ash removing mechanism for scraping the ash deposited on the surface of the tube body of the air tube group of the air preheater in a linear reciprocating motion and a power mechanism arranged on the first ash removing mechanism and used for driving the first ash removing mechanism to linearly reciprocate; the power mechanism is positioned on one side of the air preheater air pipe group, the first ash removal mechanism is positioned on one side of the power mechanism close to the air preheater air pipe group, and the power mechanism drives the first ash removal mechanism to move along the length direction of the air preheater air pipe group; one side of the first ash removal mechanism, which is close to the air preheater air pipe group, is provided with a first arc opening for scraping off accumulated ash. The method has the effect of improving the cleaning effect of the bonding accumulated dust caused by ammonium bisulfate.
Description
Technical Field
The application relates to the technical field of air preheaters, in particular to an ash removal device.
Background
The air preheater is a device used for collecting heat in flue gas in a tail flue of a boiler and preheating air before entering the boiler through internal radiating fins, so that the heat exchange performance of the boiler is improved, and the energy consumption is reduced. The air preheater air duct group is composed of a plurality of tube bodies, under the normal operation working condition, as the fly ash is carried in the smoke, the surface of the air preheater air duct group is inevitably accumulated with ash, the heat exchange between the air and the smoke is influenced, and the smoke exhaust temperature is increased and the heat exchange efficiency is reduced.
In the production process, in order to remove NOx in the flue gas and realize ultralow NOx emission, reducing agents such as urea or ammonia water and the like are sprayed into the flue gas, and ammonia gas is provided as a reactant to reduce the NOx into N2. In the case of a low boiler load, the flue gas temperature level is low and the denitration efficiency is reduced, resulting in excessive ammonia in the flue gas. Excessive ammonia in the flue gas can make ash viscidity increase, and in the low temperature section, can further increase the viscidity of ash when ammonia reacts with SOx in the flue gas and generates ammonium bisulfate, causes air heater air duct group to stain, block up, even need blowing out the stove clearance when serious.
In the related art, in order to clean the accumulated ash on the air pipe group of the air preheater in time, ash removal is generally realized by a blowing means, and the ash removal is generally performed by steam ash removal and compressed air ash removal, so that the accumulated ash on the surface of the pipe body of the air pipe group of the air preheater is cleaned.
With respect to the related art in the above, the inventors consider that: over time, the continuous adhesion of soot on the surface of the tube body of the air tube group of the air preheater can form severe adhesion, and the cleaning effect of steam soot blowing and compressed air soot blowing on the adhesion soot caused by ammonium bisulfate is weaker, and the improvement space is provided.
SUMMERY OF THE UTILITY MODEL
In order to improve the bonding deposition clearance effect that arouses ammonium bisulfate, this application provides an ash removal device.
The application provides a dust cleaning device adopts following technical scheme:
a dust cleaning device comprises a dust cleaner arranged on an air pipe group of an air preheater;
the ash remover comprises a first ash removing mechanism and a power mechanism, wherein the first ash removing mechanism is used for scraping the accumulated ash on the surface of the pipe body of the air pipe group of the air preheater in a linear reciprocating motion manner, and the power mechanism is arranged on the first ash removing mechanism and is used for driving the first ash removing mechanism to linearly reciprocate;
the power mechanism is positioned on one side of the air preheater air pipe group, the first ash removal mechanism is positioned on one side of the power mechanism close to the air preheater air pipe group, and the power mechanism drives the first ash removal mechanism to move along the length direction of the air preheater air pipe group;
and a first arc opening for scraping deposited dust is formed in one side, close to the air pipe group of the air preheater, of the first dust cleaning mechanism.
Through adopting above-mentioned technical scheme, provide power and drive first deashing mechanism straight reciprocating motion through power unit to first deashing mechanism, thereby make the deposition of first arc mouth on the first deashing mechanism on to air heater air pipe group scrape and fall, clean through machinery, improve the bonding deposition clearance effect that arouses ammonium bisulfate, and compare in the deashing in-process and do not consume the vapor resource in compressed air, can not cause low temperature corrosion, compare and do not influence the heat transfer of air preheater in the soot blowing of vapor, there is not negative effect.
Optionally, the number of the first ash removal mechanisms is two, and the two first ash removal mechanisms are symmetrically arranged on the upper side and the lower side of the air preheater air pipe group.
Through adopting above-mentioned technical scheme, all set up a first deashing mechanism through the upper and lower both sides at air heater air pipe group, increase the deashing area of first deashing mechanism to air heater air pipe group to improve deashing efficiency.
Optionally, the ash remover further comprises a second ash removing mechanism for performing linear reciprocating movement on deposited ash on the surface of the pipe body of the air preheater air pipe group to scrape the deposited ash, the second ash removing mechanism is arranged between the two first ash removing mechanisms, and a second arc opening for scraping the deposited ash is formed in one side, close to the air preheater air pipe group, of the second ash removing mechanism.
Through adopting above-mentioned technical scheme, set up second deashing mechanism between two first deashing mechanisms, drive second deashing mechanism through power unit and remove, make the second nock on the second deashing mechanism carry out the deashing to the body surface of air heater air pipe group to increase the deashing area to air heater air pipe group.
Optionally, the ash remover further comprises a third ash removing mechanism for performing linear reciprocating movement on the ash deposited on the surface of the pipe body of the air preheater air pipe group to scrape the ash, the third ash removing mechanism is arranged on one side, away from the power mechanism, of the first ash removing mechanism, and a third arc opening for scraping the ash deposited is formed in one side, close to the air preheater air pipe group, of the third ash removing mechanism.
Through adopting above-mentioned technical scheme, one side of keeping away from power unit at first deashing mechanism sets up third deashing mechanism to carry out the deashing to the body surface that is located air heater air pipe group upside and downside through the third nock on the third deashing mechanism, thereby increase the deashing area to air heater air pipe group.
Optionally, the ash remover further comprises a fourth ash removing mechanism for performing linear reciprocating movement on the ash deposited on the surface of the pipe body of the air preheater air pipe group to scrape the ash, the fourth ash removing mechanism is used for connecting the third ash removing mechanism with the first ash removing mechanism, and a fourth arc opening for scraping the ash deposited is formed in one side, close to the air preheater air pipe group, of the fourth ash removing mechanism.
Through adopting above-mentioned technical scheme, set up fourth deashing mechanism between first deashing mechanism and third deashing mechanism, be connected first deashing mechanism and third deashing mechanism through fourth deashing mechanism, and carry out the deashing through the fourth nock on the fourth deashing mechanism to the body surface of air heater air pipe group to the increase is to the deashing area of air heater air pipe group.
Optionally, the third ash removing mechanisms are provided with a plurality of third ash removing mechanisms, each third ash removing mechanism is arranged on the pipe bodies on the upper side and the lower side of the air preheater air pipe group in a one-to-one correspondence manner, and the adjacent third ash removing mechanisms are connected with each other.
Through adopting above-mentioned technical scheme, all set up third deashing mechanism on the body of the upper and lower both sides through air heater air pipe group, make the third nock in the third deashing mechanism all carry out the deashing to each body surface of the upper and lower both sides of air heater air pipe group, increase the deashing area to air heater air pipe group.
Optionally, the ash remover further comprises a fifth ash removing mechanism for performing linear reciprocating movement on deposited ash on the surface of the tube body of the air preheater air tube group to scrape the deposited ash, the fifth ash removing mechanism is located between adjacent tube bodies of the air preheater air tube group, the fifth ash removing mechanism is close to one side of the power mechanism, the first ash removing mechanism and the second ash removing mechanism are connected, the upper side and the lower side of the fifth ash removing mechanism are connected with the third ash removing mechanism and the fourth ash removing mechanism, and a fifth arc opening for scraping the deposited ash is formed in one side, close to the air preheater air tube group, of the fifth ash removing mechanism.
Through adopting above-mentioned technical scheme, set up fifth deashing mechanism between the body of air heater air pipe group, scrape the deposition between the body of air heater air pipe group through the fifth nock on the fifth deashing mechanism to increase the deashing area to air heater air pipe group.
Optionally, the fifth ash removal mechanism includes a plurality of fifth ash removal assemblies, and two adjacent fifth ash removal assemblies are connected to each other.
Through adopting above-mentioned technical scheme, fifth deashing mechanism includes a plurality of fifth deashing subassemblies, interconnects through two adjacent fifth deashing subassemblies, makes things convenient for the operator to maintain and change the fifth deashing subassembly.
Optionally, the surface of the ash remover is sprayed with a corrosion-resistant coating.
By adopting the technical scheme, the corrosion-resistant coating is sprayed on the surface of the ash remover, so that the ash remover is not easy to be corroded by corrosive components in smoke in the using process, and the service life of the ash remover is prolonged.
Optionally, the ash remover is made of heat-resistant materials.
Through adopting above-mentioned technical scheme, through all adopting heat-resisting material with the deashing ware to make the deashing ware can normally work when using, be difficult to receive the influence of high temperature condition, and prolong the life of deashing ware.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first ash removal mechanism is powered by the power mechanism and is driven to linearly reciprocate, so that the ash deposit on the air pipe group of the air preheater is scraped off by the first arc opening on the first ash removal mechanism, the cleaning effect of the bonded ash deposit caused by ammonium bisulfate is improved by mechanical cleaning, and in the ash removal process, compared with compressed air, the steam resource is not consumed, low-temperature corrosion is not caused, compared with steam ash removal, the heat exchange of the air preheater is not influenced, and no negative effect is caused;
2. the surface of the ash remover is sprayed with the corrosion-resistant coating, so that the ash remover is not easy to be corroded by corrosive components in smoke gas in the using process, and the service life of the ash remover is prolonged;
3. all adopt heat-resisting material through with the deashing ware to make the deashing ware can normally work when using, be difficult to receive the influence of high temperature condition, and prolong the life of deashing ware.
Drawings
FIG. 1 is a schematic view showing the installation of the soot cleaning device in the embodiment of the present application.
FIG. 2 is a left side view of the ash remover in an embodiment of the present application.
FIG. 3 is a top view of the ash remover in an embodiment of the present application.
Description of reference numerals: 1. an air preheater air duct group; 2. a soot cleaner; 3. a first ash removal mechanism; 4. a power mechanism; 5. a second ash removal mechanism; 6. a third ash removal mechanism; 7. a fourth ash removal mechanism; 8. a fifth ash removal mechanism; 9. a first arc port; 10. a second arc mouth; 11. a third arc mouth; 12. a fourth arc port; 13. a fifth arc port; 14. and a fifth ash cleaning component.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
Referring to fig. 1, 2 and 3, an embodiment of the present application discloses a soot cleaning device, which includes a soot cleaner 2 mounted on an air preheater air duct group 1. The ash cleaner 2 comprises a first ash cleaning mechanism 3, a power mechanism 4, a second ash cleaning mechanism 5, a third ash cleaning mechanism 6, a fourth ash cleaning mechanism 7, a fifth ash cleaning mechanism 8 and a power mechanism 4. The power mechanism 4 is installed on one side of the air preheater air pipe group 1, and a support for connection is installed between the first ash removal mechanism 3 and the power mechanism 4, so that the first ash removal mechanism 3 is installed on the power mechanism 4. First deashing mechanism 3 is provided with two, and two first deashing mechanisms 3 are located the upper right corner and the lower right corner of the vertical cross-section of air heater air pipe group 1 respectively, and first arc 9 that is used for with the body contact of air heater air pipe group 1 is offered to one side that first deashing mechanism 3 is close to air heater air pipe group 1, and first arc 9 matches mutually with the body of air heater air pipe group 1. Order about first deashing mechanism 3 through power unit 4 and remove along the body length direction of air heater air pipe group 1, make first deashing mechanism 3 scrape the deposition of air heater air pipe group 1 to through the mode of machinery deashing, improve the bonding deposition clearance effect that arouses ammonium bisulfate. The power mechanism 4 is a hydraulic mechanism, a motor, or the like, and in the present embodiment, the power mechanism 4 is a hydraulic mechanism.
Referring to fig. 1, at least one second ash removal mechanism 5 is installed, the second ash removal mechanism 5 is installed between two first ash removal mechanisms 3, the upper side and the lower side of the second ash removal mechanism 5 are both connected or welded with the first ash removal mechanisms 3 through bolts, a second arc opening 10 is formed in one side, close to the air preheater air pipe group 1, of the second ash removal mechanism 5, and the second arc opening 10 is matched with a pipe body of the air preheater air pipe group 1. The power mechanism 4 is provided with a plurality of second ash cleaning mechanisms 5, each second ash cleaning mechanism 5 is connected with one power mechanism 4, and each first ash cleaning mechanism 3 is connected with one power mechanism 4. In this embodiment, two second ash removal mechanisms 5 are provided, and the two second ash removal mechanisms 5 are connected or welded through bolts.
Referring to fig. 1, the third ash removing mechanism 6 is provided with a plurality of, the third ash removing mechanism 6 is installed at the bottom and the top of the air preheater air pipe group 1, and each third ash removing mechanism 6 is arranged corresponding to the pipe body on the upper and lower sides of the air preheater air pipe group 1 one by one, the third arc 11 is opened on one side of the third ash removing mechanism 6 close to the air preheater air pipe group 1, and the third arc 11 is matched with the pipe body of the air preheater air pipe group 1. And two adjacent third ash removing mechanisms 6 are fixed through bolt connection or welding. A fourth ash cleaning mechanism 7 used for being connected with the first ash cleaning mechanism 3 is installed on one side, close to the first ash cleaning mechanism 3, of the third ash cleaning mechanism 6, the fourth ash cleaning mechanism 7 is fixed with the third ash cleaning mechanism 6 through bolt connection or welding, and the fourth ash cleaning mechanism 7 is fixed with the first ash cleaning mechanism 3 through bolt connection or welding. A fourth arc opening 12 is formed in one side, close to the air preheater air pipe group 1, of the fourth ash removing mechanism 7, and the fourth arc opening 12 is matched with the pipe body of the air preheater air pipe group 1.
Referring to fig. 1, the fifth ash removal mechanism 8 is installed between the tubes of the air preheater air tube group 1, one side of the fifth ash removal mechanism 8 close to the power mechanism 4 is fixed to the first ash removal mechanism 3 and the second ash removal mechanism 5 through bolts or welding, and the upper side and the lower side of the fifth ash removal mechanism 8 are fixed to the third ash removal mechanism 6 and the fourth ash removal mechanism 7 through bolts or welding. The fifth ash cleaning mechanism 8 comprises a plurality of fifth ash cleaning assemblies 14, and two adjacent fifth ash cleaning assemblies 14 are fixed through bolt connection or welding. A fifth arc opening 13 is formed in the fifth ash removal component 14, the fifth arc opening 13 is located at the four corners of the fifth ash removal component 14, and the fifth arc opening 13 is matched with the pipe body of the air pipe group 1 of the air preheater.
Referring to fig. 1, the first ash removal mechanism 3, the second ash removal mechanism 5, the third ash removal mechanism 6, the fourth ash removal mechanism 7 and the fifth ash removal mechanism 8 are all in a modular design, and the shapes can be flexibly adjusted according to actual conditions. When a boiler with a high smoke temperature level is used, or low ash coal is used, or the amount of ammonia escaping is small, the fifth ash removal assembly 14 can be adjusted to a simple form having a width equal to the spacing between the tubes of the air preheater air tube bank 1. In this embodiment, the first ash removal mechanism 3, the second ash removal mechanism 5, the third ash removal mechanism 6, the fourth ash removal mechanism 7, and the fifth ash removal mechanism 8 are all nickel-based alloy plates, and the first arc port 9 on the first ash removal mechanism 3, the second arc port 10 on the second ash removal mechanism 5, the third arc port 11 on the third ash removal mechanism 6, the fourth arc port 12 on the fourth ash removal mechanism 7, and the fifth arc port 13 on the fifth ash removal mechanism 8 are all provided with comb teeth for cleaning the accumulated ash on the tube body of the air preheater air tube group 1.
Referring to fig. 1, the ash cleaner 2 is made of a heat-resistant material, so that the ash cleaner 2 works in a high-temperature environment, and the surface of the ash cleaner 2 is sprayed with a corrosion-resistant coating, so that the ash cleaner 2 is not easily corroded, and the service life of the ash cleaner 2 is prolonged.
The ash removal device of the embodiment of the application has the following implementation principle:
1. power unit 4 provides power and drives first deashing mechanism 3 and second deashing mechanism 5 and carry out reciprocating motion along the length direction of air heater air duct group 1, then drive third deashing mechanism 6, fourth deashing mechanism 7 and the 8 reciprocating motion of fifth deashing mechanism, remove the in-process through first nock 9 on the first deashing mechanism 3, second nock 10 on the second deashing mechanism 5, third nock 11 on the third deashing mechanism 6, fourth nock 12 on the fourth deashing mechanism 7 and the fifth nock 13 on the fifth deashing mechanism 8 scrape the deposit on the body surface of air duct group 1 off, realize the mesh of mechanical deashing, improve the bonding deposit clearance effect that arouses to ammonium bisulfate.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an ash removal device which characterized in that: comprises a dust remover (2) arranged on an air pipe group (1) of an air preheater;
the ash remover (2) comprises a first ash removing mechanism (3) for scraping the accumulated ash on the surface of the tube body of the air tube group (1) in a linear reciprocating motion manner and a power mechanism (4) which is arranged on the first ash removing mechanism (3) and is used for driving the first ash removing mechanism (3) to perform the linear reciprocating motion;
the power mechanism (4) is positioned on one side of the air preheater air pipe group (1), the first ash removal mechanism (3) is positioned on one side, close to the air preheater air pipe group (1), of the power mechanism (4), and the power mechanism (4) drives the first ash removal mechanism (3) to move along the length direction of the air preheater air pipe group (1);
one side of the first ash removal mechanism (3) close to the air preheater air pipe group (1) is provided with a first arc opening (9) for scraping deposited ash.
2. The ash removal device of claim 1, wherein: the two first ash removal mechanisms (3) are arranged, and the two first ash removal mechanisms (3) are symmetrically arranged on the upper side and the lower side of the air pipe group (1) of the air preheater.
3. The ash removal device of claim 2, wherein: deashing ware (2) still include be used for right the body of air heater air pipe group (1) is surperficial deposition carries out straight reciprocating motion and scrapes second deashing mechanism (5), second deashing mechanism (5) set up in two between first deashing mechanism (3), second deashing mechanism (5) are close to one side of air heater air pipe group (1) is seted up and is used for scraping second nock (10) of deposition.
4. The ash removal device of claim 3, wherein: deashing ware (2) still including be used for right the body of air heater air pipe group (1) is surperficial deposition carries out sharp reciprocating motion and scrapes third clear grey mechanism (6) that fall, third clear grey mechanism (6) set up in first deashing mechanism (3) is kept away from one side of power unit (4), third clear grey mechanism (6) are close to third nock (11) that are used for scraping the deposition are seted up to one side of air heater air pipe group (1).
5. The ash removal device of claim 4, wherein: deashing ware (2) still include be used for right the body of air heater air pipe group (1) is surperficial deposition carries out straight reciprocating motion and scrapes fourth clear grey mechanism (7) that fall, fourth clear grey mechanism (7) are used for connecting third clear grey mechanism (6) with first deashing mechanism (3), fourth clear grey mechanism (7) are close to fourth nock (12) that are used for scraping the deposition are seted up to one side of air heater air pipe group (1).
6. The ash removal device of claim 5, wherein: the third ash removing mechanisms (6) are arranged in a plurality of numbers, and each third ash removing mechanism (6) is arranged on the pipe bodies on the upper side and the lower side of the air preheater air pipe group (1) in a one-to-one correspondence mode, and every two adjacent third ash removing mechanisms (6) are connected with each other.
7. The ash removal device of claim 6, wherein: deashing ware (2) still include be used for right the body on the surface deposition of air heater wind nest of tubes (1) carries out sharp reciprocating motion and scrapes fifth deashing mechanism (8) that drops, fifth deashing mechanism (8) are located between the adjacent body of air heater wind nest of tubes (1), fifth deashing mechanism (8) are close to one side of power unit (4) with first deashing mechanism (3) reach second deashing mechanism (5) are connected, the upper and lower both sides of fifth deashing mechanism (8) with third deashing mechanism (6) reach fourth deashing mechanism (7) are connected, fifth deashing mechanism (8) are close to one side of air heater wind nest of tubes (1) is seted up and is used for scraping fifth nock (13) that drops the deposition.
8. The ash removal device of claim 7, wherein: the fifth ash cleaning mechanism (8) comprises a plurality of fifth ash cleaning components (14), and two adjacent fifth ash cleaning components (14) are connected with each other.
9. The ash removal device of claim 8, wherein: the surface of the ash cleaner (2) is sprayed with corrosion-resistant paint.
10. The ash removal device of claim 9, wherein: the ash cleaner (2) is made of heat-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123451170.6U CN216558488U (en) | 2021-12-30 | 2021-12-30 | Ash removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123451170.6U CN216558488U (en) | 2021-12-30 | 2021-12-30 | Ash removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216558488U true CN216558488U (en) | 2022-05-17 |
Family
ID=81560619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123451170.6U Active CN216558488U (en) | 2021-12-30 | 2021-12-30 | Ash removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216558488U (en) |
-
2021
- 2021-12-30 CN CN202123451170.6U patent/CN216558488U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2505915A1 (en) | Device and method for cleaning heat exchange finned tubes in a heat recovery steam generator | |
| EP3789722A1 (en) | Reciprocating rake type soot blower system | |
| CN109186291A (en) | It is a kind of can automatic cleaning heat-transfer surface boiler economizer | |
| CN102519278A (en) | Heat exchanger capable of recycling heat from acidic gas containing dust | |
| CN216558488U (en) | Ash removal device | |
| CN210180238U (en) | Novel air horizontal tube heat exchanger | |
| CN216986758U (en) | Heating furnace exhaust treatment device | |
| CN109939516A (en) | Flue gas condensing dedusting energy-saving device based on graphene heat-exchanging tube bundle | |
| CN212691812U (en) | High-efficient deashing structure of boiler heat transfer face | |
| CN213631736U (en) | Desulfurization and denitrification's boiler waste heat recovery device | |
| CN216282999U (en) | Online ash removal device of rotatory steel wire soft brush | |
| CN213930895U (en) | Re-flow economizer device | |
| CN209679748U (en) | Flue gas condensing dedusting energy-saving device based on graphene heat-exchanging tube bundle | |
| CN213778716U (en) | Flue gas waste heat recovery device with automatic cleaning function | |
| CN212901565U (en) | On-line automatic ash removal device of boiler heat exchanger | |
| CN210662816U (en) | Structure of horizontal waste incineration exhaust-heat boiler with heating surfaces arranged in three channels | |
| CN216244352U (en) | Modular comb-tooth type online ash removal device | |
| CN220229228U (en) | Mechanical ash removal device driven by screw rod | |
| CN207527610U (en) | A kind of deslagging device of biomass combustion machine | |
| CN216523372U (en) | Online ash removal device for elliptical tube air preheater | |
| CN219453984U (en) | Boiler flue ash removal device | |
| CN112097530A (en) | Novel preheated air heat exchanger | |
| CN113797666B (en) | Ash removal mechanism of self-cleaning marine boiler | |
| CN216898531U (en) | Take online ash removal device of soft brush broach | |
| CN218672257U (en) | Air heater deashing broach and ash removal device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |