CN219389702U - Structure for preventing biomass fuel from coking and affecting combustion - Google Patents
Structure for preventing biomass fuel from coking and affecting combustion Download PDFInfo
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- CN219389702U CN219389702U CN202320815104.2U CN202320815104U CN219389702U CN 219389702 U CN219389702 U CN 219389702U CN 202320815104 U CN202320815104 U CN 202320815104U CN 219389702 U CN219389702 U CN 219389702U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The utility model relates to a structure of biomass fuel coking without influencing combustion, and belongs to the technical field of biomass combustion residue removal. The technical proposal is as follows: the side wall of the combustion tube (3) is provided with a plurality of air inlet holes (14) with variable functions in a layered manner, the combustion tube (3) becomes a hearth when being inserted into the liner (2), and after one combustion period, the combustion tube (3) is drawn out to clean coking at one time. The combustion tube (3) is internally provided with a combustion layer (16) and a coking layer (17), and the combustion layer (16) is always arranged on the combustion tube. Along with the gradual thickening of the coking layer in the combustion process, the air inlet corresponding to the combustion layer can be dynamically raised, the coking layer cannot occupy the space of the combustion layer, and the air inlet corresponding to the combustion layer cannot be blocked to influence combustion. The utility model has the positive effects that: after the utility model is applied, various biomass boilers, stoves and burners do not need a decoking device, can stably burn for a long time under various firepower, can use high ash content cheap fuel, and reduce manufacturing and running costs.
Description
Technical Field
The utility model relates to a structure of biomass fuel coking without influencing combustion, and belongs to the technical field of biomass combustion residue removal.
Background
The prevention and removal of coking caused by the combustion of biomass briquette directly determine whether the furnace can stably operate, and the aim is to use more high ash content cheap fuel. The prior art generally adopts a method for removing biomass coking at any time by mechanical intervention, and the reciprocating grate mechanical push-out coking technology of patent number CN201922337782.9, the double-wheel decoking mechanical roll-out coking technology of patent number CN201820962437.7 and the mechanical rotary grinding coking technology of patent number CN202111140108.7 (application of the applicant) represent three common mechanical decoking methods, and the three decoking technologies have common defects: 1. the furnace volume and height are fixed and the ability to accommodate elevation (thickening) of the coking and combustion layers is limited. When the decoking is not in time or the coking speed exceeds the decoking speed, the coking layer gradually rises to squeeze the space of the combustion layer, so that unstable combustion or flameout is caused. 2. The position, number and ratio of the primary air (combustion air for combustion layer) and the secondary air (volatile combustion air) are fixed. When the decoking is not in time or the coking speed exceeds the decoking speed, the coking layer gradually increases (thickens) to block the air inlet hole, so that unstable combustion or flameout is caused. 3. Continuous stable combustion needs to keep high temperature, and when the coke is frequently removed, a high-heat coking layer and a part of combustion layers are removed, primary air holes are dredged, cooling is enhanced, the temperature is reduced, and when small fire is used, insufficient combustion, smoke generation and fuel waste are caused, so that the heat efficiency is low. 4. The decoking speed is set manually through a controller, and the coking speed is limited by a plurality of objective factors to be dynamically changed, so that the decoking speed and the coking speed are difficult to be accurately matched in practical application. When the decoking speed is smaller than the coking speed, the coke residue cannot be effectively removed; when the decoking speed is greater than the coking speed, the combustion layers can be cleaned together, so that fuel waste and unstable combustion are caused. 5. The low-speed driving motor is in a dust high-temperature environment for a long time, the mechanical transmission mechanism runs in a severe environment for a long time, faults are easy to occur, the service life is influenced, and sometimes noise is larger.
Disclosure of Invention
The utility model aims to provide a structure that biomass fuel cokes without influencing combustion, so that a combustion layer dynamically avoids the influence of a coking layer, decoking is not needed in the whole combustion process, after one combustion period, coke slag is removed again, long-term stable combustion is kept, more high-ash cheap fuels can be used, and the technical problems existing in the prior art are solved.
The technical scheme of the utility model is as follows:
the structure of the biomass fuel coking without influencing combustion comprises a furnace body, an inner container and a combustion tube, wherein the inner container is arranged in the furnace body, the combustion tube can be pulled out from and inserted into the inner container of the furnace body, the combustion tube can move up and down, an interlayer formed by the inner container and the combustion tube is used as a positive pressure air buffer area, and positive pressure air is blown into the interlayer; the top end opening and the bottom end of the combustion tube are provided with closed tube bottoms, the side wall of the combustion tube is provided with a plurality of air inlet holes in a layered mode, and positive pressure air enters the combustion tube from the air inlet holes to support combustion.
Further, the biomass fuel in the combustion tube forms a combustion layer and a coking layer in the combustion process, the combustion tube is a place where the combustion layer burns, the coking layer generates and stores the coke slag, the combustion layer is always arranged on the coking layer, the combustion process is not influenced by the coking layer, and the coking generated in the combustion process of the biomass fuel does not need mechanical cleaning; after one combustion cycle, the combustion tube is drawn out for one time to remove coking, and the cleaned combustion tube is inserted into the liner again to start a new combustion cycle; the height of the combustion tube is larger than the sum of the heights of the combustion layer and the coking layer at the end of one combustion period.
Further, the inner container is a cavity positioned in the furnace body, and the bottom end of the inner container is provided with an air inlet and is connected with the air blower; the top end of the inner container is provided with an inner container opening which is matched with the outer diameter of the combustion tube, the combustion tube can be smoothly inserted and withdrawn, and the fixed combustion tube and the inner container are coaxial. The shape of the inner container is matched with that of the combustion tube, the width of an interlayer formed after the combustion tube is inserted into the inner container is matched with the wind pressure and the wind inlet quantity generated by the blower and the wind inlet, and the air pressure in the interlayer is gradually reduced from bottom to top along with the air inlet hole for air inlet into the combustion tube.
Further, the air inlet Kong Fenceng on the side wall of the combustion tube is arranged from bottom to top and is respectively a first layer of air inlet holes to an nth layer of air inlet holes, each layer of air inlet holes is composed of a plurality of small holes distributed around the combustion tube, the N layer of air inlet holes are divided into four virtual areas, and the four virtual areas are a used air hole area (sealed by a coking layer), a primary air hole area (generally only one layer of air holes), a secondary air hole area and a standby air hole area from bottom to top, which correspond to the used air holes, the primary air holes, the secondary air holes and the standby air holes respectively.
Further, the bottom of the combustion tube is not provided with a wind hole. The bottom of the combustion tube of the low-power stove is provided with a fixed tube bottom, the fixed tube bottom and the combustion tube are of an integrated structure, and coke residues are not leaked during extraction. The bottom of the combustion tube of the high-power stove is provided with a movable tube bottom, the movable tube bottom is a drawing plate placed on the guide rail, the upper surface of the movable tube bottom is attached to the bottom of the combustion tube, the drawing plate becomes the tube bottom of the combustion tube when pushed in, the combustion tube loses the tube bottom after being pulled out, ash and coke fall by gravity, and tools can be inserted into the combustion tube for manual intervention when the falling is unsmooth.
Further, when the movable tube bottom is used for the combustion tube, an ash removal door communicated with the inner container is arranged on the furnace body below the bottom end of the inner container. When the ash removal door is closed, the sealing state of the inner container is kept, when the ash removal door is opened, the movable pipe bottom of the combustion pipe can be operated to drop ash coke, and then the dropped ash coke is removed by using a tool.
Further, the bottom end of the combustion tube is provided with an ignition hole, the shape of the ignition hole is matched with that of an ignition rod tube, when the combustion tube is inserted into the liner, the ignition rod tube is embedded into the ignition hole and slightly extends out of the combustion tube, an ignition rod is inserted into the ignition rod tube, and biomass fuel is ignited when the ignition rod is electrified.
Further, the flange is arranged at the edge of the opening at the top end of the combustion tube, and the combustion tube and the liner are positioned and fixed through the flange. The flange covers the gap between the combustion tube and the opening of the inner container to prevent the air leakage. The flange is provided with a traction piece for drawing the combustion tube out of the liner.
According to the application method, the combustion tube can be extracted and inserted from the liner of the furnace body, the top end of the combustion tube is opened, the bottom end of the combustion tube is provided with a closed tube bottom, the side wall of the combustion tube is provided with a plurality of air inlet holes in a layered manner, and positive pressure air enters the combustion tube from the air inlet holes to support combustion; the biomass fuel in the combustion tube forms a combustion layer and a coking layer in the combustion process, the combustion layer is always arranged on the coking layer, the combustion process is not affected by the coking layer, and the coking generated in the combustion process of the biomass fuel does not need mechanical cleaning; after one combustion cycle, the combustion tube is drawn out for one time to remove coking, and the cleaned combustion tube is inserted into the liner again to start a new combustion cycle.
Further, when the movable tube bottom is used as the tube bottom of the combustion tube, the ash removal door is opened after one combustion period, and the movable tube bottom is pulled out, so that the coke slag in the combustion tube falls down to finish one-time decoking.
Further, the air inlet Kong Fenceng on the side wall of the combustion tube is arranged from bottom to top and is respectively a first layer of air inlet holes to an nth layer of air inlet holes, each layer of air inlet holes is composed of a plurality of small holes distributed around the combustion tube, the N layer of air inlet holes are divided into four virtual areas, and the four virtual areas are a used air hole area (sealed by a coking layer), a primary air hole area (generally only one layer of air holes), a secondary air hole area and a standby air hole area from bottom to top, which correspond to the used air holes, the primary air holes, the secondary air holes and the standby air holes respectively. The positive pressure air in the interlayer supplies primary air and secondary air into the combustion pipe through the air inlet holes, and the primary air holes and the secondary air holes respectively correspond to the primary air hole areas and the secondary air hole areas; in the whole combustion process, the number of layers of the used wind hole area is gradually increased from zero to the maximum, the number of layers of the primary wind hole area and the secondary wind hole area are relatively fixed, the positions of the primary wind hole area and the secondary wind hole area are gradually increased, the standby wind hole area is gradually changed from the maximum to the zero, and the number of layers of the wind hole is gradually reduced.
The innovation of the utility model is that: 1. the burning pipe is used as a burning place and a coke residue storage container, a coking layer is gradually accumulated in the burning process, mechanical intervention is not used for cleaning, and the coking layer is periodically cleaned after one burning period; 2. the burning layer is always arranged on the coking layer, the burning layer is dynamically raised along with the coking layer, and the coking layer cannot occupy the space of the burning layer to influence burning. 3. The primary air holes and the secondary air holes are dynamically generated along with the combustion layer, and the coking layer only blocks the used air holes and cannot block the primary air holes and the secondary air holes to influence combustion. 4. The arrangement of the combustion tube and the liner and the air inlet are divided into four virtual areas and are converted according to rules, so that the rationality of the combustion air is ensured. 5. Simple structure and low cost, no driving electric device and mechanical parts, no failure, no maintenance, long service life and no noise.
The utility model has the positive effects that: the side wall of the combustion tube is provided with a plurality of air inlets with variable functions in a layering way, the combustion tube becomes a hearth when being inserted into the liner, and after one combustion period, the combustion tube is drawn out to clean coking at one time. The combustion tube is internally provided with a combustion layer and a coking layer, and the combustion layer is always arranged on the combustion tube. Along with the gradual thickening of the coking layer in the combustion process, the air inlet corresponding to the combustion layer can be dynamically raised, the coking layer cannot occupy the space of the combustion layer, and the air inlet corresponding to the combustion layer cannot be blocked to influence combustion. After the utility model is applied, various biomass boilers, stoves and burners do not need a decoking device, can stably burn for a long time under various firepower, can use high ash content cheap fuel, and reduce manufacturing and running costs.
Drawings
FIG. 1 is a schematic diagram of a structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic view of a burner tube according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of an air intake state of a combustion layer in a first layer of air holes according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of an air inlet state when a combustion layer is lifted to a second layer of air holes according to the embodiment of the utility model;
FIG. 6 is a schematic diagram of the intake air state at the end of a combustion cycle according to an embodiment of the present utility model;
FIG. 7 is a schematic view of the combustion state at the beginning of combustion according to an embodiment of the present utility model;
FIG. 8 is a schematic diagram of the combustion layer and coking layer conditions at mid-combustion stage of an embodiment of the present utility model;
FIG. 9 is a schematic view of the combustion layer and coking layer at the end of combustion in accordance with an embodiment of the present utility model;
in the figure: furnace body 1, inner container 2, combustion tube 3, intermediate layer 4, air-blower 5, ignition stick tube 6, chute 7, movable tube bottom 8, guide rail 9, ash removal door 10, inner container opening 11, flange 12, traction piece 13, inlet air hole 14, ignition hole 15, combustion layer 16, coking layer 17, used air hole 18, primary air hole 19, secondary air hole 20, and spare air hole 21.
Detailed Description
The utility model is further described by way of examples with reference to the accompanying drawings.
The utility model provides a biomass fuel coking does not influence structure of burning, contains furnace body 1, inner bag 2 and combustion tube 3, is equipped with inner bag 2 in the furnace body 1, and combustion tube 3 can be taken out and inserted from inner bag 2 of furnace body 1, and combustion tube 3 is the upper and lower movable, and intermediate layer 4 that inner bag 2 and combustion tube 3 constitute is as positive pressure air buffer, to the air of malleation of intermediate layer 4 blast; the top end opening and the bottom end of the combustion tube 3 are provided with closed tube bottoms, the side wall of the combustion tube 3 is provided with a plurality of air inlet holes 14 in a layered mode, and positive pressure air enters the combustion tube 3 from the air inlet holes 14 to support combustion.
The biomass fuel in the combustion tube 3 forms a combustion layer 16 and a coking layer 17 in the combustion process, the combustion tube 3 is a place where the combustion layer 16 burns, the coking layer 17 generates and stores coke residues, the combustion layer 16 is always arranged on the coking layer 17, the combustion process is not affected by the coking layer 17, and the coking generated in the combustion process of the biomass fuel does not need mechanical cleaning; after one combustion cycle, the combustion tube 3 is drawn out for one time to remove coking, and the cleaned combustion tube 3 is inserted into the liner 2 again to start a new combustion cycle. The height of the combustion tube 3 is larger than the sum of the heights of the combustion layer 16 and the coking layer 17 at the end of one combustion cycle.
The inner container 2 is a cavity positioned in the furnace body 1, and the bottom end of the inner container 2 is provided with an air inlet and is connected with the blower 5; the top end of the liner 2 is provided with a liner opening 11 which is matched with the outer diameter of the combustion tube 3, the combustion tube 3 can be smoothly inserted and extracted, and the fixed combustion tube 3 and the liner 2 are coaxial. The shape of the inner container 2 is matched with that of the combustion tube 3, the width of an interlayer formed after the combustion tube 3 is inserted into the inner container 2 is matched with the wind pressure and the wind inlet quantity generated by the blower 5 and the wind inlet, and the air pressure in the interlayer 4 is gradually reduced from bottom to top along with the air inlet hole 14 for air inlet into the combustion tube 3.
The air inlet holes 14 on the side wall of the combustion tube 3 are arranged in a layered manner, from bottom to top, the first layer of air inlet holes to the nth layer of air inlet holes are respectively formed, each layer of air inlet holes is composed of a plurality of small holes distributed around the combustion tube 3, the N layer of air inlet holes are divided into four virtual areas, and the four virtual areas are used air hole areas (blocked by coking layers), primary air hole areas (generally only one layer of air holes), secondary air hole areas and standby air hole areas from bottom to top, which correspond to the used air holes 18, the primary air holes 19, the secondary air holes 20 and the standby air holes 21 respectively. The more the number of layers of the air inlet holes 14 is set, the longer one combustion cycle is.
The bottom of the combustion tube 3 is not provided with an air inlet, and biomass fuel is added into the combustion tube 3 through the chute 7.
The bottom end of the combustion tube 3 is provided with an ignition hole 15, the shape of the ignition hole 15 is matched with that of the ignition rod tube 6, when the combustion tube 3 is inserted into the liner 2, the ignition rod tube 6 is embedded into the ignition hole 15 and slightly extends out of the combustion tube 3, an ignition rod is inserted into the ignition rod tube 6, and biomass fuel is ignited when the ignition rod is electrified.
The flange 12 is arranged at the edge of the opening at the top end of the combustion tube 3, the combustion tube 3 and the liner 2 are positioned and fixed through the flange 12, and the flange 12 covers the gap between the combustion tube 3 and the liner opening 11 to prevent air leakage. The flange 12 is provided with a traction member 13 for drawing the combustion tube 3 out of the liner 2.
In the first embodiment, referring to fig. 1, a bottom of a combustion tube 3 of a low-power stove is welded and fixed, the bottom and the combustion tube 3 are integrated into a whole, and no coke residue is leaked during extraction.
In the second embodiment, referring to fig. 2, a movable bottom 8 is disposed at the bottom end of the combustion tube 3 of the high-power stove, the movable bottom 8 is a drawing plate placed on a guide rail 9, the upper surface is attached to the bottom end of the combustion tube 3, the drawing plate becomes the bottom of the combustion tube 3 when pushed in, after the combustion tube 3 is pulled out, the bottom of the combustion tube 3 is lost, ash coke falls down by gravity, and tools can be inserted into the combustion tube 3 for manual intervention when falling is not smooth. When the movable pipe bottom 8 is used for the combustion pipe 3, an ash removal door 10 communicated with the inner container 2 is arranged on the furnace body 1 below the bottom end of the inner container 2. When the ash removal door 10 is closed, the sealing state of the liner 2 is kept, when the ash removal door is opened, the movable pipe bottom 8 of the combustion pipe 3 can be operated to drop ash coke, and then the dropped ash coke is removed by using a tool.
The specific combustion process of the utility model is as follows:
the method comprises the steps that (1) a combustion period starts, a Jiao Zhaqing inverted combustion tube 3 is inserted into an inner container 2, a blower 5 works to keep positive pressure air of an interlayer 4, biomass fuel enters until a tube orifice of an ignition rod is just submerged, and the ignition rod is electrified to ignite the fuel (manual ignition is performed when the ignition rod is not arranged); referring to fig. 4 and 7, when a cycle starts, the first layer of air inlet holes are primary air holes 19, and a secondary air hole area and a standby air hole area are sequentially arranged on the first layer of air inlet holes, and at the moment, the standby air hole area is the largest, and the used air hole area is zero; at the beginning of a combustion cycle, only the combustion layer 16, coking has not occurred, and no coking layer 17.
Referring to fig. 5 and 8, during combustion, newly entered fuel is continuously dropped on the combustion layer 16, biomass fuel is changed into ash by combustion, and part of the ash is formed into coke residues, so that stable states of the upper combustion layer 16 and the lower coking layer 17 are formed. When the feeding speed is stable, the thickness of the combustion layer 16 is relatively stable, the thickness of the coking layer 17 is gradually increased, and the position of the combustion layer 16 is gradually increased along with the thickening of the coking layer 17, however, the coking layer 17 does not squeeze the space of the combustion layer 16, and the combustion of the combustion layer 16 is not affected. Meanwhile, the coking layer 17 has strong heat preservation capability, can transpire upwards for a quite long time to output high temperature, provides a high temperature environment for stable combustion for the upper combustion layer 16, and keeps stable combustion; even if the combustion layer 16 is extinguishable for a short period of time, the newly entered biomass fuel can be rapidly burned to a stable state in a high temperature environment. During combustion, the various wind hole areas are dynamically changed as the thickness of the coking layer 17 increases and the position of the combustion layer 16 increases. When the combustion layer 16 is lifted to the second layer of air holes, the first layer of air holes are submerged by the coking layer 17 and changed into used air holes from the primary air holes, the second layer of air holes are changed into primary air holes from the secondary air holes, and the standby air holes are reduced by one layer and supplemented to the secondary air holes. Similarly, each time one wind hole layer is added to the used wind hole area, the standby wind hole area is reduced by one wind hole layer. The new primary air holes are always dynamically generated following the combustion layer, and the primary air required for the combustion of the combustion layer 16 is always ensured. The volatile matters precipitated in the combustion layer 16 rise to the upper part of the combustion layer to burn, new secondary air holes are dynamically generated on the combustion layer 16, secondary air required by the combustion of volatile matters is met, and the coking layer 17 is blocked by the used air holes, so that the combustion of the combustion layer 16 is not influenced all the time. The thickening of the coking layer 17 during combustion has substantially no effect on the combustion wind configuration. With the progressive thickening of the coking layer 17, the used air holes are progressively increased, the total air inlet holes are progressively reduced, and the air velocity of each air inlet hole is progressively increased. Because the wind pressure and the wind quantity of the blower are relatively stable, the wind quantity of the primary wind and the secondary wind is not changed greatly, and the proportion of the primary wind and the secondary wind is changed to a certain extent, but the combustion stability is ensured within a fuzzy allowable range.
Referring to fig. 6 and 9, a combustion cycle is completed, the position of the combustion layer 16 is continuously raised as the coking layer 17 is continuously thickened, and when the upper surface of the combustion layer is provided with only secondary air holes, the standby air holes are zero, namely, the combustion cycle is completed.
For the first embodiment, the stove is closed first, the combustion 3 is drawn out from the inner container 2 by inserting the tool into the traction piece 13, the internal coke residue is poured out completely, the disposable decoking is completed, meanwhile, each air inlet hole can be cleaned, and finally, the combustion tube 3 is inserted into the inner container 2 for the next combustion cycle. When the coke residue is not needed to be poured in one combustion cycle, the method can also be used for completing the midway one-time decoking.
For the second embodiment, in order to use the stove with the movable combustion tube bottom 8, the ash removal door 10 is opened, the movable tube bottom 8 is pulled out to drop the coke residue in the combustion tube 3, and the tool is used to remove the coke residue. The method can also be used for completing midway decoking when no combustion cycle is needed to remove the coke residue.
Claims (6)
1. The utility model provides a structure that biomass fuel coking does not influence burning which characterized in that: the furnace comprises a furnace body (1), an inner container (2) and a combustion tube (3), wherein the inner container (2) is arranged in the furnace body (1), the combustion tube (3) can be pulled out and inserted from the inner container (2) of the furnace body (1), the combustion tube (3) can move up and down, an interlayer (4) formed by the inner container (2) and the combustion tube (3) is used as a positive pressure air buffer area, and positive pressure air is blown into the interlayer (4); the combustion tube (3) is characterized in that the top end opening and the bottom end of the combustion tube (3) are provided with closed tube bottoms, the side wall of the combustion tube (3) is provided with a plurality of air inlet holes (14) in a layered mode, and positive pressure air enters the combustion tube (3) from the air inlet holes (14) to support combustion.
2. The structure of claim 1, wherein the biomass fuel cokes without affecting combustion, and is characterized in that: the biomass fuel in the combustion tube (3) forms a combustion layer (16) and a coking layer (17) in the combustion process, the combustion tube (3) is a place where the combustion layer (16) burns, the coking layer (17) generates and stores coke residues, and the combustion layer (16) is always arranged on the coking layer (17).
3. A structure for preventing coking of biomass fuel from affecting combustion according to claim 1 or 2, wherein: the inner container (2) is a cavity positioned in the furnace body (1), and the bottom end of the inner container (2) is provided with an air inlet and is connected with the air blower (5); the top end of the inner container (2) is provided with an inner container opening (11) which is matched with the outer diameter of the combustion tube (3), the combustion tube (3) can be smoothly inserted and pulled out, and the fixed combustion tube (3) and the inner container (2) are coaxial.
4. A structure for preventing coking of biomass fuel from affecting combustion according to claim 1 or 2, wherein: the air inlet holes (14) on the side wall of the combustion tube (3) are arranged in a layered manner, the first layer of air inlet holes to the N layer of air inlet holes are respectively arranged from bottom to top, each layer of air inlet holes consists of a plurality of small holes distributed around the combustion tube (3), the N layer of air inlet holes are divided into four virtual areas, and the four virtual areas are a used air hole area, a primary air hole area, a secondary air hole area and a standby air hole area from bottom to top in sequence and correspond to the used air holes (18), the primary air holes (19), the secondary air holes (20) and the standby air holes (21) respectively.
5. A structure for preventing coking of biomass fuel from affecting combustion according to claim 1 or 2, wherein: the tube bottom is a fixed tube bottom and is of an integrated structure with the combustion tube (3).
6. A structure for preventing coking of biomass fuel from affecting combustion according to claim 1 or 2, wherein: the pipe bottom is a movable pipe bottom (8), the movable pipe bottom (8) is a drawing plate placed on the guide rail (9), the upper surface is attached to the bottom end of the combustion pipe (3), the drawing plate becomes the pipe bottom of the combustion pipe (3) when being pushed in, and the combustion pipe (3) loses the pipe bottom after being pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320815104.2U CN219389702U (en) | 2023-04-13 | 2023-04-13 | Structure for preventing biomass fuel from coking and affecting combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320815104.2U CN219389702U (en) | 2023-04-13 | 2023-04-13 | Structure for preventing biomass fuel from coking and affecting combustion |
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| Publication Number | Publication Date |
|---|---|
| CN219389702U true CN219389702U (en) | 2023-07-21 |
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| CN202320815104.2U Active CN219389702U (en) | 2023-04-13 | 2023-04-13 | Structure for preventing biomass fuel from coking and affecting combustion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537494A (en) * | 2024-01-09 | 2024-02-09 | 河北惠华达宇科技有限公司 | Biomass laminated combustion fluid heater and method |
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2023
- 2023-04-13 CN CN202320815104.2U patent/CN219389702U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537494A (en) * | 2024-01-09 | 2024-02-09 | 河北惠华达宇科技有限公司 | Biomass laminated combustion fluid heater and method |
| CN117537494B (en) * | 2024-01-09 | 2024-04-02 | 河北惠华达宇科技有限公司 | Biomass laminated combustion fluid heater and method |
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