CN112503499A - Energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat - Google Patents
Energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat Download PDFInfo
- Publication number
- CN112503499A CN112503499A CN202011418361.XA CN202011418361A CN112503499A CN 112503499 A CN112503499 A CN 112503499A CN 202011418361 A CN202011418361 A CN 202011418361A CN 112503499 A CN112503499 A CN 112503499A
- Authority
- CN
- China
- Prior art keywords
- side wall
- fixedly connected
- plate
- upper side
- combustion chamber
- 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.)
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- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 title claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 239000002912 waste gas Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to the technical field of boilers and discloses an energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat, which comprises a bottom plate, wherein a combustion chamber is fixedly connected to the upper side wall of the bottom plate, a boiler chamber is fixedly connected to the upper side wall of the combustion chamber, a burner is fixedly connected to the right side wall of the combustion chamber, two connecting plates with inverted-L-shaped cross sections are fixedly connected to the upper side wall of the bottom plate, the same heating cylinder is fixedly connected to the side walls of the two opposite sides of the two connecting plates, the same waste gas pipe is fixedly communicated with the side wall between the heating cylinder and the combustion chamber, a cover plate is hinged to the upper side wall of the heating cylinder through a hinge, fixing plates are fixedly connected to the left side walls of the cover plate and the heating cylinder, the same clamping frame is sleeved outside the two fixing. The invention can utilize a large amount of waste heat in the boiler flue gas, can dry certain wet articles and is beneficial to the reasonable utilization of resources.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to an energy-saving and environment-friendly gas boiler capable of secondarily utilizing waste heat.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The boiler is a water container heated on fire, a furnace is a place where fuel is combusted, and the boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, and can also be converted into mechanical energy through a steam power device, or the mechanical energy is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises.
The existing boiler can produce more flue gas when in use, the flue gas contains a large amount of waste heat, the waste of the waste heat can be caused by directly discharging the flue gas, and the reasonable utilization of resources is not facilitated.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a boiler generates more flue gas when in use, the flue gas contains a large amount of waste heat, the waste heat is wasted due to the fact that the flue gas is directly discharged, and reasonable utilization of resources is not facilitated.
In order to achieve the purpose, the invention adopts the following technical scheme:
an energy-saving and environment-friendly gas boiler capable of reutilizing waste heat comprises a bottom plate, wherein a combustion chamber is fixedly connected to the upper side wall of the bottom plate, a boiler chamber is fixedly connected to the upper side wall of the combustion chamber, a burner is fixedly connected to the right side wall of the combustion chamber, two connecting plates with inverted-L-shaped cross sections are fixedly connected to the upper side wall of the bottom plate, the same heating cylinder is fixedly connected to the side wall of one side of each of the two connecting plates opposite to the side wall of the other side of the two connecting plates, the side wall between the heating cylinder and the combustion chamber is fixedly communicated with the same waste gas pipe, the upper side wall of the heating cylinder is hinged with a cover plate through a hinge, the cover plate and the left side wall of the heating cylinder are both fixedly connected with fixing plates, the two fixing plates are sleeved with the same clamping frame, limiting holes are formed in the upper side wall, the upper end of the limiting pin is fixedly connected with a transverse plate, the side wall between the transverse plate and the clamping frame is fixedly connected with a first spring sleeved outside the limiting pin, the upper side wall of the cover plate is fixedly communicated with an exhaust pipe, the upper side wall of the cover plate is fixedly connected with a filter cylinder, the right end of the exhaust pipe is fixedly communicated with the side wall of the filter cylinder, a filter screen plate is inserted in the filter cylinder, the left side wall of the filter cylinder is fixedly connected with a placing plate, the upper side wall of the placing plate is rotatably connected with an elastic telescopic rod through a rotating shaft, the upper end of the elastic telescopic rod is fixedly connected with a pressing plate, the lower side wall of the pressing plate is fixedly connected with a limiting block, the upper side wall of the filter screen plate is provided with a limiting groove matched with the limiting block, the right side wall of the filter, and the right side wall of the active carbon treatment device is fixedly communicated with a discharge pipe.
Preferably, the lower side wall of the cover plate is fixedly connected with a rubber pad.
Preferably, the upper side walls of the transverse plate and the pressing plate are both fixedly connected with pull rings.
Preferably, the inner wall of the heating cylinder is fixedly connected with a placing net.
Preferably, the inner wall of the combustion chamber is fixedly connected with a partition plate, the right side wall of the combustion chamber is fixedly connected with a water inlet pipe, the left side wall of the combustion chamber is fixedly communicated with a drain pipe, the upper side wall of the boiler chamber is fixedly communicated with a water injection pipe, and the left side wall of the boiler chamber is fixedly communicated with a drain pipe.
Preferably, the side wall of the filter screen plate is symmetrically and fixedly connected with two rubber rings.
Compared with the prior art, the invention provides an energy-saving and environment-friendly gas boiler capable of secondarily utilizing waste heat, which has the following beneficial effects:
1. this energy-concerving and environment-protective type gas boiler of waste heat reutilization, bottom plate through setting up, the combustion chamber, the boiler room, the combustor, the connecting plate, the cartridge heater, the exhaust gas pipe, the apron, the fixed plate, the card frame, spacing hole, the spacer pin, the card hole, the diaphragm, first spring, the blast pipe, the cartridge filter, filter plate, place the board, the elastic telescopic rod, the clamp plate, the stopper, the spacing groove, the connecting pipe, active carbon processing apparatus and delivery pipe, can utilize a large amount of waste heat in the boiler flue gas, some moist article can be dried, be favorable to the rational utilization of resource.
2. This energy-concerving and environment-protective type gas boiler of waste heat reutilization, through the board of placing, elasticity telescopic link, clamp plate, stopper, spacing groove, cartridge filter, the filter screen board that sets up, can filter the flue gas and conveniently clear up the impurity on filter screen board surface.
The device can utilize a large amount of waste heat in the boiler flue gas, can dry wet articles, is favorable for reasonably utilizing resources, can filter the flue gas and is convenient to clean impurities on the surface of the filter screen plate.
Drawings
FIG. 1 is a schematic structural view of an energy-saving and environment-friendly gas boiler for secondary utilization of waste heat according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B in fig. 1.
In the figure: 1 bottom plate, 2 combustion chambers, 3 boiler rooms, 4 combustors, 5 connecting plates, 6 heating barrels, 7 cover plates, 8 fixing plates, 9 clamping frames, 10 limiting holes, 11 limiting pins, 12 clamping holes, 13 transverse plates, 14 first springs, 15 exhaust pipes, 16 filter cartridges, 17 filter screen plates, 18 placing plates, 19 elastic telescopic rods, 20 pressing plates, 21 limiting blocks, 22 limiting grooves, 23 waste gas pipes, 24 connecting pipes, 25 activated carbon treatment devices, 26 discharge pipes, 27 rubber gaskets, 28 pull rings, 29 placing nets, 30 partition plates, 31 water inlet pipes, 32 water outlet pipes, 33 water injection pipes, 34 water discharge pipes and 35 rubber gaskets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, an energy-saving and environment-friendly gas boiler using waste heat for secondary use comprises a bottom plate 1, a combustion chamber 2 is fixedly connected to the upper side wall of the bottom plate 1, a boiler chamber 3 is fixedly connected to the upper side wall of the combustion chamber 2, a burner 4 is fixedly connected to the right side wall of the combustion chamber 2, two connecting plates 5 with inverted-L-shaped cross sections are fixedly connected to the upper side wall of the bottom plate 1, the same heating cylinder 6 is fixedly connected to the side wall of the opposite side of the two connecting plates 5, the same exhaust gas pipe 23 is fixedly communicated with the side wall between the heating cylinder 6 and the combustion chamber 2, a cover plate 7 is hinged to the upper side wall of the heating cylinder 6 through a hinge, fixing plates 8 are fixedly connected to the cover plate 7 and the left side wall of the heating cylinder 6, the same clamping frame 9 is sleeved outside the two fixing plates 8, a limiting hole 10 is formed in the upper side wall of the clamping frame 9, a limiting pin 11 is, a transverse plate 13 is fixedly connected to the upper end of the limit pin 11, a first spring 14 sleeved outside the limit pin 11 is fixedly connected to the side wall between the transverse plate 13 and the clamping frame 9, an exhaust pipe 15 is fixedly communicated with the upper side wall of the cover plate 7, a filter cartridge 16 is fixedly connected to the upper side wall of the cover plate 7, the right end of the exhaust pipe 15 is fixedly communicated with the side wall of the filter cartridge 16, a filter screen plate 17 is inserted in the filter cartridge 16, a placing plate 18 is fixedly connected to the left side wall of the filter cartridge 16, an elastic telescopic rod 19 is rotatably connected to the upper side wall of the placing plate 18 through a rotating shaft, a pressing plate 20 is fixedly connected to the upper end of the elastic telescopic rod 19, a limiting block 21 is fixedly connected to the lower side wall of the pressing plate 20, a limiting groove 22 matched with the limiting block 21 is formed in the upper side wall of the filter screen plate, the right side wall of the activated carbon treatment device 25 is fixedly communicated with a discharge pipe 26.
The lower side wall of the cover plate 7 is fixedly connected with a rubber pad 27, so that the sealing performance between the heating cylinder 6 and the cover plate 7 is improved.
The upper side walls of the transverse plate 13 and the pressing plate 20 are both fixedly connected with pull rings 28, so that the transverse plate 13 and the pressing plate 20 can be conveniently pulled.
The inner wall of the heating cylinder 6 is fixedly connected with a placing net 29, so that heating objects can be conveniently placed.
The inner wall fixedly connected with baffle 30 of combustion chamber 2, the fixed even section of thick bamboo of right side wall of combustion chamber 2 has inlet tube 31, and the fixed intercommunication of left side wall of combustion chamber 2 has drain pipe 32, and the fixed intercommunication of last side wall of boiler room 3 has water injection pipe 33, and the fixed intercommunication of left side wall of boiler room 3 has bleeder 34, makes things convenient for water injection and drainage.
Two rubber rings 35 are symmetrically and fixedly connected to the side wall of the filter screen plate 17, so that the sealing performance of the filter screen plate 17 is improved.
When the device is used, the transverse plate 13 is pulled upwards, the transverse plate 13 drives the limiting pin 11 to move upwards to a proper position, the limiting pin 11 is separated from the limiting hole 10, the clamping frame 9 is separated from the fixing plate 8, the cover plate 7 is opened, after an article to be heated is placed, the cover plate 7 can be closed through reverse operation, the burner 4 is started to work, smoke enters the heating cylinder 6 from the waste gas pipe 23 to heat the article to be heated, a large amount of waste heat in boiler smoke can be utilized, certain moist articles can be dried, and reasonable utilization of resources is facilitated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The energy-saving and environment-friendly gas boiler capable of utilizing waste heat for the second time comprises a bottom plate (1) and is characterized in that a combustion chamber (2) is fixedly connected to the upper side wall of the bottom plate (1), a boiler chamber (3) is fixedly connected to the upper side wall of the combustion chamber (2), a burner (4) is fixedly connected to the right side wall of the combustion chamber (2), two connecting plates (5) with inverted L-shaped cross sections are fixedly connected to the upper side wall of the bottom plate (1), the two opposite side walls of the two connecting plates (5) are fixedly connected with a same heating cylinder (6), the side wall between the heating cylinder (6) and the combustion chamber (2) is fixedly communicated with a same waste gas pipe (23), an cover plate (7) is hinged to the upper side wall of the heating cylinder (6) through a hinge, and a fixing plate (8) is fixedly connected to the cover plate (7) and the left side wall of, the outer sleeves of the two fixing plates (8) are provided with the same clamping frame (9), the upper side wall of each clamping frame (9) is provided with a limiting hole (10), a limiting pin (11) is inserted in each limiting hole (10), the side walls of the two fixing plates (8) are provided with clamping holes (12) matched with the limiting pin (11), the upper end of each limiting pin (11) is fixedly connected with a transverse plate (13), the side wall between each transverse plate (13) and the corresponding clamping frame (9) is fixedly connected with a first spring (14) sleeved outside the corresponding limiting pin (11), the upper side wall of the cover plate (7) is fixedly communicated with an exhaust pipe (15), the upper side wall of the cover plate (7) is fixedly connected with a filter cartridge (16), the right end of the exhaust pipe (15) is fixedly communicated with the side wall of the filter cartridge (16), a filter screen plate (17) is inserted in the filter cartridge (16), and the left side wall of the filter cartridge (16) is fixedly, the utility model discloses a filter cartridge, including place board (18), place the last lateral wall of board (18) and rotate through the pivot and be connected with elastic telescopic rod (19), the upper end fixedly connected with clamp plate (20) of elastic telescopic rod (19), the lower lateral wall fixedly connected with stopper (21) of clamp plate (20), spacing groove (22) of matcing each other with stopper (21) are seted up to the last lateral wall of filter plate (17), the fixed intercommunication of right side wall of cartridge filter (16) has connecting pipe (24), the fixed intercommunication of right-hand member of connecting pipe (24) has active carbon processing apparatus (25), the fixed intercommunication of right side wall of active carbon processing apparatus (25) has delivery pipe (26).
2. The energy-saving and environment-friendly gas boiler for secondary utilization of waste heat according to claim 1, characterized in that a rubber gasket (27) is fixedly connected to the lower side wall of the cover plate (7).
3. The energy-saving and environment-friendly gas boiler for secondary utilization of waste heat according to claim 1, characterized in that the transverse plate (13) and the upper side wall of the pressing plate (20) are both fixedly connected with pull rings (28).
4. The energy-saving and environment-friendly gas boiler for secondary utilization of waste heat according to claim 1, characterized in that the inner wall of the heating cylinder (6) is fixedly connected with a placing net (29).
5. The energy-saving and environment-friendly gas boiler capable of recycling waste heat according to claim 1, characterized in that a partition plate (30) is fixedly connected to the inner wall of the combustion chamber (2), a water inlet pipe (31) is fixedly connected to the right side wall of the combustion chamber (2), a water outlet pipe (32) is fixedly communicated to the left side wall of the combustion chamber (2), a water injection pipe (33) is fixedly communicated to the upper side wall of the boiler chamber (3), and a water outlet pipe (34) is fixedly communicated to the left side wall of the boiler chamber (3).
6. The energy-saving and environment-friendly gas boiler for secondary utilization of waste heat according to claim 1, characterized in that two rubber rings (35) are symmetrically and fixedly connected to the side wall of the filter screen (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418361.XA CN112503499A (en) | 2020-12-07 | 2020-12-07 | Energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418361.XA CN112503499A (en) | 2020-12-07 | 2020-12-07 | Energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112503499A true CN112503499A (en) | 2021-03-16 |
Family
ID=74970920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011418361.XA Withdrawn CN112503499A (en) | 2020-12-07 | 2020-12-07 | Energy-saving environment-friendly gas boiler capable of secondarily utilizing waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112503499A (en) |
-
2020
- 2020-12-07 CN CN202011418361.XA patent/CN112503499A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210316 |