CN115978529A - Biomass fuel combustion device - Google Patents
Biomass fuel combustion device Download PDFInfo
- Publication number
- CN115978529A CN115978529A CN202211711409.5A CN202211711409A CN115978529A CN 115978529 A CN115978529 A CN 115978529A CN 202211711409 A CN202211711409 A CN 202211711409A CN 115978529 A CN115978529 A CN 115978529A
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- Prior art keywords
- combustion
- combustion chamber
- grate
- air inlet
- air supply
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 209
- 239000000446 fuel Substances 0.000 title claims abstract description 50
- 239000002028 Biomass Substances 0.000 title claims abstract description 49
- 238000012856 packing Methods 0.000 claims 5
- 239000002551 biofuel Substances 0.000 claims 2
- 239000010881 fly ash Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- -1 sodium alkali metals Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Solid-Fuel Combustion (AREA)
Abstract
The invention discloses a biomass fuel combustion device which comprises a feeding assembly, a combustion chamber and an air supply pipe assembly, wherein the feeding assembly is arranged in the lateral direction of the combustion chamber, a discharge port of the feeding assembly faces the combustion chamber, a main combustion grate and a burnout grate are arranged at the bottom of the combustion chamber, the burnout grate is arranged on one side of the main combustion grate far away from the feeding assembly and is arranged below the main combustion grate, the air supply pipe assembly comprises a primary air inlet pipe and a burnout air inlet pipe, the primary air inlet pipe is arranged at the position of the main combustion grate, an air outlet of the primary air inlet pipe is communicated with the combustion chamber, and the burnout air inlet pipe is arranged at the position of the burnout grate and an air outlet of the burnout air inlet pipe is communicated with the combustion chamber. According to the biomass fuel combustion device provided by the invention, the air supply pipe assembly is arranged, so that air is supplied to the main combustion grate and the burnout grate from two directions, sufficient air volume is provided for biomass fuel combustion, the biomass fuel can be fully combusted in the combustion chamber, the flying ash amount is reduced, and clean combustion of the biomass fuel is realized.
Description
Technical Field
The invention relates to the field of combustion devices, in particular to a biomass fuel combustion device.
Background
The biomass fuel is a clean fuel, has different combustion characteristics compared with fossil energy, has the advantages of low fixed carbon content, high volatile matter content, low density, loose structure, easy blowing by primary air, large suspension combustion proportion, large fly ash amount, rich potassium and sodium alkali metals with low ash fusion points, high-temperature fly ash viscosity and easy coking on the wall of a heat exchange pipeline. The existing biomass fuel combustion device has insufficient combustion and large fly ash amount, unburnt spark particles are commonly clamped in the smoke exhaust of a small biomass furnace, safety accidents are easily caused, the flue of a heat exchanger is easily blocked, the use is inconvenient, the combustion is incomplete, the smoke dust is more, and new environmental protection problems are easily generated.
In view of the above, it is necessary to provide a biomass fuel combustion device to solve the above-mentioned drawbacks.
Disclosure of Invention
The invention mainly aims to provide a biomass fuel combustion device, and aims to solve the problem of insufficient combustion of the existing biomass furnace.
In order to achieve the purpose, the invention provides a biomass fuel combustion device which comprises a feeding assembly, a combustion chamber and an air supply pipe assembly, wherein the feeding assembly is located in the lateral direction of the combustion chamber, a discharge hole of the feeding assembly faces the combustion chamber, a main combustion grate and a burnout grate are arranged at the bottom of the combustion chamber, the burnout grate is arranged on one side, away from the feeding assembly, of the main combustion grate, the burnout grate is located below the main combustion grate, a guide inclined plane is arranged between the burnout grate and the main combustion grate, the air supply pipe assembly comprises a primary air inlet pipe and a burnout air inlet pipe, the primary air inlet pipe is arranged at the position of the main combustion grate, an air outlet of the primary air inlet pipe is communicated with the combustion chamber, the burnout air inlet pipe is arranged at the position of the burnout grate, and an air outlet of the burnout air inlet pipe is communicated with the combustion chamber.
Preferably, still include secondary air feed combustion assembly, secondary air feed combustion assembly locates the top of combustion chamber, secondary air feed combustion assembly with the combustion chamber intercommunication, secondary air feed combustion assembly is used for to follow the air current that the combustion chamber flows out carries out the postcombustion.
Preferably, the secondary air supply combustion assembly comprises a combustion hearth, a secondary air inlet pipe and an air supply inner cylinder with an annular cavity, the combustion hearth is erected on the combustion chamber and communicated with the combustion chamber, the air supply inner cylinder is arranged inside the combustion hearth, an air outlet hole is formed in the inner wall surface of the air supply inner cylinder, and the secondary air inlet pipe is arranged on one side of the combustion hearth and communicated with the air supply inner cylinder.
Preferably, the air outlet holes are uniformly distributed at intervals along the circumferential direction of the air supply inner cylinder, and the air outlet holes form an air outlet hole ring.
Preferably, the inner wall of the air supply inner cylinder is provided with two air outlet hole rings, and the two air outlet hole rings are arranged at intervals along the axial direction of the air supply inner cylinder.
Preferably, the pipe diameter of the primary air inlet pipe is larger than that of the over-fire air inlet pipe.
Preferably, the over fire air inlet pipe is arranged horizontally.
Preferably, the pay-off subassembly includes glassware and feeding auger down, glassware fixed connection in on the feeding auger, the discharge gate of feed opening with the feed inlet intercommunication of feeding auger, feeding auger fixed connection in the lateral wall of combustion chamber, the discharge gate of feeding auger with the combustion chamber intercommunication.
Preferably, the feeding assembly further comprises a hopper, the hopper is fixedly connected to the blanking device, and a discharge hole of the hopper is communicated with a feed hole of the blanking device.
Compared with the prior art, the biomass fuel combustion device provided by the invention has the following beneficial effects:
the invention provides a biomass fuel combustion device which comprises a feeding assembly, a combustion chamber and an air supply pipe assembly, wherein the feeding assembly is arranged in the lateral direction of the combustion chamber, a discharge hole of the feeding assembly faces the combustion chamber, a main combustion grate and a burnout grate are arranged at the bottom of the combustion chamber, the burnout grate is arranged on one side, away from the feeding assembly, of the main combustion grate, the burnout grate is arranged below the main combustion grate, a guide inclined plane is arranged between the burnout grate and the main combustion grate, the air supply pipe assembly comprises a primary air inlet pipe and a burnout air inlet pipe, the primary air inlet pipe is arranged at the position of the main combustion grate, an air outlet of the primary air inlet pipe is communicated with the combustion chamber, and the burnout air inlet pipe is arranged at the position of the burnout grate and an air outlet of the burnout air inlet pipe is communicated with the combustion chamber. Through setting up main burning grate and burn off the grate, set up the blast pipe subassembly, carry out the air feed to main burning grate and burn off grate department respectively from two directions, provide sufficient amount of wind for the biomass fuel burning, biomass fuel can carry out abundant burning in the combustion chamber is inside, has reduced the flying dust volume, has realized biomass fuel's clear burning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of a biomass fuel combustion device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a secondary air supply combustion assembly according to an embodiment of the present invention;
the reference numbers indicate:
a biomass fuel combustion device 100; a feeding assembly 20; a discharger 21; a feeding auger 22; a hopper 23; a combustion chamber 30; a primary combustion grate 31; a burn-out grate 32; a guide slope 33; an air supply duct assembly 40; a primary air inlet duct 41; an overfire air inlet duct 42; a secondary air supply combustion assembly 50; a combustion chamber 51; a secondary air inlet duct 52; an air supply inner cylinder 53; an air outlet hole 531.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a biomass fuel combustion apparatus 100, which includes a feeding assembly 20, a combustion chamber 30, and a blast pipe assembly 40, wherein the feeding assembly 20 is located in a side direction of the combustion chamber 30, a discharge port of the feeding assembly 20 is disposed toward the combustion chamber 30, a main combustion grate 31 and a burnout grate 32 are disposed at a bottom of the combustion chamber 30, the burnout grate 32 is disposed at a side of the main combustion grate 31 away from the feeding assembly 20, the burnout grate 32 is located below the main combustion grate 31, a guide inclined plane 33 is disposed between the burnout grate 32 and the main combustion grate 31, the blast pipe assembly 40 includes a primary air inlet pipe 41 and a burnout air inlet pipe 42, the primary air inlet pipe 41 is disposed at a position of the main combustion grate 31, an air outlet of the primary air inlet pipe 41 is communicated with the combustion chamber 30, the burnout air inlet pipe 42 is disposed at a position of the burnout air inlet pipe 32, and an air outlet of the burnout air inlet pipe 42 is communicated with the combustion chamber 30.
Specifically, the feeding assembly 20 is disposed laterally to the combustion chamber 30, and a discharge port of the feeding assembly 20 is disposed toward the combustion chamber 30 and is communicated with the combustion chamber 30, so as to feed the biomass fuel into the combustion chamber 30 for combustion. The bottom of the combustion chamber 30 is provided with a main combustion grate 31 and an burnout grate 32, the main combustion grate 31 is arranged at a position close to the feeding assembly 20, the burnout grate 32 is arranged at one side of the main combustion grate 31 far away from the feeding assembly 20, biomass fuel enters from the feeding assembly 20, the biomass fuel is firstly combusted on the main combustion grate 31, and along with feeding of the feeding assembly 20, the biomass fuel is pushed into the burnout grate 32 for final combustion after primary combustion.
The burnout grate 32 is arranged below the main combustion grate 31, and a guide inclined plane 33 is arranged between the burnout grate 32 and the main combustion grate 31, so that the biomass fuel can conveniently enter the burnout grate 32 from the main combustion grate 31; the air supply duct assembly 40 includes a primary air inlet duct 41 and an overfire air inlet duct 42, the primary air inlet duct 41 is disposed corresponding to the main combustion grate 31 to provide primary air to the main combustion grate 31, and the overfire air inlet duct 42 is disposed corresponding to the overfire grate 32 to provide overfire air to the overfire grate 32.
As shown in fig. 1, the primary air inlet duct 41 is disposed at the bottom of the combustion chamber 30 and near the main combustion grate 31, and the air outlet thereof is communicated with the combustion chamber 30; the overfire air inlet duct 42 is disposed at the bottom of the combustion chamber 30 and near the position of the overfire grate 32, and the air outlet thereof is also communicated with the combustion chamber 30.
Under the action of the feeding assembly 20, biomass fuel enters the combustion chamber 30 and is combusted on the main combustion grate 31, and primary air is provided by the primary air inlet pipe 41; the biomass fuel after primary combustion and the unburnt biomass fuel enter the burnout grate 32 under the action of the fuel continuously pushed by the feeding assembly 20 to be completely combusted, and the burnout air is provided by the burnout air inlet pipe 42.
It should be understood that, by arranging the main combustion grate 31 and the burnout grate 32 and arranging the air supply pipe assembly 40, air is supplied to the main combustion grate 31 and the burnout grate 32 from two directions, so that sufficient air volume is provided for biomass fuel combustion, the biomass fuel can be fully combusted in the combustion chamber 30, the amount of fly ash is reduced, and clean combustion of the biomass fuel is realized.
In a preferred embodiment of the present invention, the secondary air supply combustion assembly 50 is further provided, the secondary air supply combustion assembly 50 is provided at the top of the combustion chamber 30, the secondary air supply combustion assembly 50 is communicated with the combustion chamber 30, and the secondary air supply combustion assembly 50 is used for performing secondary combustion on the air flow flowing out from the combustion chamber 30.
In detail, a secondary air supply combustion assembly 50 is further arranged at the top of the combustion chamber 30, the secondary air supply combustion assembly 50 is communicated with the combustion chamber 30, when the biomass fuel is combusted in the combustion chamber 30, high-temperature fuel gas (including combustible particulate matter) generated after the combustion rises to enter the secondary air supply combustion assembly 50, and the secondary air supply combustion assembly 50 provides secondary combustion-supporting gas, so that the high-temperature fuel gas is fully combusted in the secondary air supply combustion assembly 50, and the fly ash amount is reduced.
As a preferred embodiment of the present invention, the secondary air supply combustion assembly 50 includes a combustion chamber 51, a secondary air inlet pipe 52 and an air supply inner cylinder 53 having an annular cavity, the combustion chamber 51 is erected on the combustion chamber 30 and is communicated with the combustion chamber 30, the air supply inner cylinder 53 is disposed inside the combustion chamber 51, an air outlet hole 531 is disposed on an inner wall surface of the air supply inner cylinder 53, and the secondary air inlet pipe 52 is disposed on one side of the combustion chamber 51 and is communicated with the air supply inner cylinder 53.
Specifically, the structure of the secondary air supply combustion assembly 50 specifically comprises a combustion hearth 51, a secondary air inlet pipe 52 and an air supply inner barrel 53, wherein the combustion hearth 51 is erected at the top of the combustion chamber 30 and communicated with the combustion chamber 30
The combustion furnace 51 is arranged in a cylinder shape, and the top of the combustion furnace is provided with an opening, so that the high-temperature 5 gas after being fully combusted can enter a subsequent hot air utilization device.
An air supply inner cylinder 53 is arranged inside the combustion hearth 51 and is provided with an annular cavity, a secondary air inlet pipe 52 is arranged on one side of the combustion hearth 51, an air outlet of the secondary air inlet pipe is communicated with the air supply inner cylinder 53 and is used for providing secondary air for the combustion hearth 51, an air outlet hole 531 is arranged on the inner wall surface of the air supply inner cylinder 53, and the secondary air flows from the two air outlets
The secondary air enters through the air inlet pipe 52 and is discharged into the combustion hearth 51 from the air outlet through the air supply inner barrel 53, the high-temperature gas which is not completely combusted is lifted into the combustion hearth 51 from the combustion chamber 30 and is fully mixed with the secondary air, and the secondary air can be used for supplying the high-temperature gas
And (4) fully combusting.
Further, the air outlet holes 531 are uniformly distributed along the circumferential direction of the air supply inner cylinder 53 at intervals, and the air outlet holes 531 form an air outlet hole ring (not shown).
It is worth noting that a plurality of air outlet holes 531 are arranged on the air supply inner cylinder 53, the air outlet holes 5315 are uniformly distributed at intervals along the circumferential direction of the air supply inner cylinder 53 to form an air outlet hole ring, secondary air is transmitted through the air outlet holes 531, sufficient air volume can be provided for the combustion hearth 51, high-temperature gas can be sufficiently combusted, and fly ash amount is reduced.
Furthermore, the inner wall of the air supply inner cylinder 53 is provided with two air outlet hole rings, and the two air outlet hole rings are arranged at intervals along the axial direction of the air supply inner cylinder 53.
Specifically, two air outlet hole rings are arranged on the inner wall of the air supply inner cylinder 53, the two air outlet hole rings are arranged at intervals along the axial direction of the air supply inner cylinder 53, and the quantity of secondary air is increased by increasing the number of the air outlet holes 531, so that sufficient secondary air is provided for the combustion hearth 51.
In a preferred embodiment of the present invention, the diameter of the primary air inlet duct 41 is larger than the diameter of the overfire air inlet duct 42.
In detail, in the present embodiment, the pipe diameter of the primary air inlet duct 41 is set to be larger than that of the combustion air inlet duct
The pipe diameter of the pipe enables the biomass fuel to be fully combusted when the biomass fuel is combusted on the main combustion grate 31 for one time, and the biomass fuel can be completely combusted by providing a little less air quantity when the biomass fuel is combusted on the burnout grate 32.
Further, the over-fire air inlet pipe 42 is arranged horizontally.
It should be noted that, because the burnout grate 32 is stepped, the overfire air inlet duct 42 is horizontally disposed at the bottom of the combustion chamber 30, so that the overfire air can be better fed into the combustion chamber 30 for the biomass fuel to be fully combusted on the burnout grate 32.
As a preferred embodiment of the present invention, the feeding assembly 20 includes a blanking device 21 and a feeding auger 22, the blanking device 21 is fixedly connected to the feeding auger 22, a discharge port of the blanking device is communicated with a feed port of the feeding auger 22, the feeding auger 22 is fixedly connected to a side wall of the combustion chamber 30, and a discharge port of the feeding auger 22 is communicated with the combustion chamber 30.
In detail, the feeding assembly 20 comprises a feeder 21 and a feeding auger 22, the feeder 21 is arranged on the feeding auger, a discharge port of the feeder is arranged towards the feeding auger 22 and communicated with the feeding auger 22, the feeding auger 22 is arranged at one side of the combustion chamber 30, a discharge port of the feeding auger 22 is arranged towards the combustion chamber 30 and communicated with the combustion chamber 30, and under the action of the feeder 21, biomass fuel enters the feeding auger 22 and is conveyed to the combustion chamber 30 by the feeding auger 22 for combustion.
As a preferred embodiment of the present invention, the feeding assembly 20 further includes a hopper 23, the hopper 23 is fixedly connected to the feeder 21, and a discharge port of the hopper 23 is communicated with a feed port of the feeder 21.
It should be understood that the feeding assembly 20 further comprises a hopper 23, the hopper 23 is disposed on the downer 21, a discharge port of the hopper 23 is disposed toward the downer 21 and communicates with a feed port of the downer 21, biomass fuel can be stored through the hopper 23, and addition of fuel is facilitated.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A biomass fuel combustion device is characterized by comprising a feeding component, a combustion chamber and an air supply pipe component, wherein the feeding component is positioned in the side direction of the combustion chamber, a discharge hole of the feeding component faces the combustion chamber,
the bottom of the combustion chamber is provided with a main combustion grate and an after-combustion grate, the after-combustion grate is arranged on one side of the main combustion grate far away from the feeding assembly, the after-combustion grate is positioned below the main combustion grate, a guide inclined plane is arranged between the after-combustion grate and the main combustion grate,
the air supply pipe assembly comprises a primary air inlet pipe and an over-fire air inlet pipe, the primary air inlet pipe is arranged at the position of the main combustion grate, an air outlet of the primary air inlet pipe is communicated with the combustion chamber, the over-fire air inlet pipe is arranged at the position of the over-fire grate, and an air outlet of the over-fire air inlet pipe is communicated with the combustion chamber.
2. The biomass fuel combustion device according to claim 1, further comprising a secondary air supply combustion assembly, wherein the secondary air supply combustion assembly is arranged at the top of the combustion chamber and is communicated with the combustion chamber, and the secondary air supply combustion assembly is used for carrying out secondary combustion on the airflow flowing out of the combustion chamber.
3. The biomass fuel combustion device according to claim 2, wherein the secondary air supply combustion assembly comprises a combustion chamber, a secondary air inlet pipe and an air supply inner cylinder with an annular cavity, the combustion chamber is erected on the combustion chamber and communicated with the combustion chamber, the air supply inner cylinder is arranged inside the combustion chamber, an air outlet hole is formed in the inner wall surface of the air supply inner cylinder, and the secondary air inlet pipe is arranged on one side of the combustion chamber and communicated with the air supply inner cylinder.
4. The biomass fuel combustion device according to claim 3, wherein a plurality of the air outlet holes are uniformly arranged at intervals along the circumferential direction of the air supply inner barrel, and the plurality of the air outlet holes form an air outlet hole ring.
5. The biomass fuel combustion device according to claim 4, wherein two air outlet hole rings are arranged on the inner wall of the air supply inner cylinder, and the two air outlet hole rings are arranged at intervals along the axial direction of the air supply inner cylinder.
6. The biofuel combustion device as set forth in claim 1 wherein said primary air inlet duct has a larger diameter than said overfire air inlet duct.
7. The biofuel combustion device as set forth in claim 1, wherein said overfire air inlet duct is horizontally disposed.
8. The biomass fuel combustion device according to claim 1, wherein the feeding assembly comprises a blanking device and a feeding packing auger, the blanking device is fixedly connected to the feeding packing auger, a discharge port of the blanking port is communicated with a feed port of the feeding packing auger, the feeding packing auger is fixedly connected to the side wall of the combustion chamber, and the discharge port of the feeding packing auger is communicated with the combustion chamber.
9. The biomass fuel combustion device according to claim 8, wherein the feeding assembly further comprises a hopper, the hopper is fixedly connected to the feeder, and a discharge port of the hopper is communicated with a feed port of the feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211711409.5A CN115978529A (en) | 2022-12-29 | 2022-12-29 | Biomass fuel combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211711409.5A CN115978529A (en) | 2022-12-29 | 2022-12-29 | Biomass fuel combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115978529A true CN115978529A (en) | 2023-04-18 |
Family
ID=85967752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211711409.5A Pending CN115978529A (en) | 2022-12-29 | 2022-12-29 | Biomass fuel combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115978529A (en) |
-
2022
- 2022-12-29 CN CN202211711409.5A patent/CN115978529A/en active Pending
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