Suspension type low-nitrogen low-carbon combustion heat supply environment-friendly furnace

Abstract

The utility model provides a suspension type low-nitrogen low-carbon combustion heat supply environment-friendly furnace, which belongs to the technical field of biomass direct combustion purification environment protection, and comprises a combustion furnace, a feeding device, a combustor, an air supply device and an ash discharge device, the furnace body comprises an outer furnace body, an inner furnace body and a dust removal furnace body which are sequentially arranged from outside to inside, a combustion-supporting air space is arranged between the outer furnace body and the inner furnace body, the dust removal furnace body is arranged above the fire grate, a dust removal space is arranged between the dust removal furnace body and the inner furnace body, and the inner side of the dust removal furnace body is a suspension combustion space.

Description

Technical Field

[0001] This utility model relates to the field of biomass direct combustion purification and environmental protection technology, specifically to a suspended low-nitrogen and low-carbon combustion heating environmental protection furnace. Background Technology

[0002] Biomass energy, ranked as the fourth largest energy source after coal, oil, and natural gas, is characterized by its large quantity, wide distribution, high renewability, low pollution, and zero net carbon dioxide emissions. It is a major raw material for replacing fossil fuels. Currently, the main directions for high-end biomass utilization are pure oxygen-assisted pyrolysis gasification to produce syngas for hydrogen extraction and methanol synthesis. However, the pyrolysis gasification synthesis of hydrogen or methanol faces certain development barriers due to high investment costs, system complexity, and a lack of understanding of technological maturity. Furthermore, direct combustion of biomass has low thermal efficiency; for example, the thermal efficiency of a typical wood-fired stove is only 10-20% of the fuel's heat, and the high escape rate of carbon monoxide and combustible gas actually causes environmental damage. With the increasing popularity of biomass energy utilization, clean biomass fuel heating has been widely applied in hot air furnaces, steam generators, stoves, heating systems, and industrial production. Existing biomass combustion furnaces all use pellet feed. For woody biomass, pelleting is preferable. For herbaceous biomass such as rice husks and straw, pressing them into bio-pellets before combustion in the furnace results in high pelleting costs and no economic benefit, leading to the ineffective utilization of lightweight straw and municipal waste. Furthermore, existing combustion furnaces are all coarse-fiber combustion systems, generally resulting in substandard flue gas emissions. Ash removal is typically done manually after furnace shutdown, impacting production efficiency. Utility Model Content

[0003] To overcome or at least partially solve the above problems, embodiments of this application provide a suspended low-NOx, low-carbon combustion heating environmentally friendly furnace, comprising:

[0004] A combustion furnace, comprising a furnace body and a grate, the grate being disposed at the bottom of the furnace body, the furnace body comprising an outer furnace body, an inner furnace body, and a dust removal furnace body arranged sequentially from the outside to the inside, a combustion air space being provided between the outer furnace body and the inner furnace body, the dust removal furnace body being disposed above the grate, a dust removal space being provided between the dust removal furnace body and the inner furnace body, and a suspended combustion space being disposed on the inner side of the dust removal furnace body;

[0005] A feeding device is located at the top of the combustion furnace and is connected to the suspended combustion space;

[0006] A burner is provided on the side of the upper part of the combustion furnace. The burner includes a gas distributor and a combustion air distributor. The gas distributor is connected to the dust removal space, and the combustion air distributor is connected to the combustion air space.

[0007] An air supply device, comprising a blower, is used to supply air to the grate, the combustion air space, and the feeding device;

[0008] An ash removal device is located at the bottom of the combustion furnace and is connected to the suspended combustion space.

[0009] In some embodiments, the combustion air space includes a burner combustion air space and a furnace bottom section combustion air space, the air supply device further includes a burner combustion air pipe and a furnace bottom section combustion air pipe, the blower is sequentially connected to the burner combustion air pipe, the burner combustion air space, and the gas distributor, and the blower is sequentially connected to the furnace bottom section combustion air pipe, the furnace bottom section combustion air space, and the suspended combustion space.

[0010] In some embodiments, the grate includes:

[0011] A spiral box body, wherein the spiral box body is a hollow structure;

[0012] Fabric wind cap, comprising multiple fabric wind caps, wherein the fabric wind caps are disposed on the top of the spiral box body;

[0013] A central hollow shaft is installed at the bottom of the furnace body by a fixing device, and a spiral box is installed on the central hollow shaft, with the spiral box communicating with the internal space of the central hollow shaft;

[0014] A driving device is provided below the furnace body, and the driving device is used to drive the spiral box to rotate;

[0015] A rotary joint is located at the bottom of the central hollow shaft.

[0016] In some embodiments, the air supply device further includes a furnace bottom combustion air duct, which is connected to the central hollow shaft via a rotary joint, and the blower communicates with the central hollow shaft and the internal space of the spiral box via the furnace bottom combustion air duct.

[0017] In some embodiments, the feeding device includes:

[0018] A silo for feeding biomass;

[0019] A shredder, located inside the hopper, is used to shred biomass;

[0020] A mixer, located at the bottom of the silo, is used to mix the biomass.

[0021] A feed airlock fan is located below the agitator inside the silo.

[0022] The material conveying auger has its inlet connected to the outlet of the hopper, and its outlet is located at the top of the furnace body and is connected to the interior of the furnace body.

[0023] In some embodiments, the air supply device includes a backfire prevention pipe and a material dispersion air pipe. The blower is connected to the discharge port of the silo through the backfire prevention pipe to prevent backfire of the biomass burning in the furnace. The blower is connected to the outlet of the conveying auger through the material dispersion air pipe to disperse the biomass material fed into the furnace.

[0024] In some embodiments, the ash removal device includes:

[0025] A scraper blade is located at the bottom of the furnace body and is attached to the inner bottom surface of the furnace body.

[0026] An ash discharge pipe is provided below the furnace body and is connected to the suspended combustion space;

[0027] Ash discharge shut-off fan, wherein the ash discharge shut-off fan is installed inside the ash discharge pipe;

[0028] Ash discharge auger, which is located at the outlet of the ash discharge pipe.

[0029] In some embodiments, a sight glass and a thermocouple are provided on the side wall of the furnace body. The sight glass is connected to the suspended combustion space, and the thermocouple is used to measure the temperature of the suspended combustion space.

[0030] In some embodiments, the burner 3 is a W-type low-NOx and low-carbon burner 3, the gas distributor 31 is a V-cone perforated plate distributor located at the center of the burner 3, and the bottom of the V-cone of the gas distributor 31 has a plurality of through holes uniformly opened along the radial direction of the gas distributor 31; the combustion air distributor 32 is located on the periphery of the gas distributor 31 and is coaxially arranged with the gas distributor 31, and the inner side of the combustion air distributor 32 has a plurality of through holes uniformly opened toward the tail of the V-cone of the gas distributor 31.

[0031] This application enables fluidized bed combustion in the combustion furnace by setting up a grate. The raw materials only need to be simply cut and fed into the furnace for suspension combustion. By setting up a multi-layer furnace body, biomass can undergo primary fuel combustion at low temperature and then undergo secondary combustion and purification at high temperature in the burner. This results in high flue gas purity, high thermal efficiency, and high gasification intensity. It can realize automatic feeding, automatic slag discharge, and automatic high and low temperature control. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a structural schematic diagram of a suspended low-nitrogen, low-carbon combustion heating environmental protection furnace provided for an embodiment of this utility model.

[0034] The attached figures are labeled as follows: 1. Combustion furnace; 11. Furnace body; 111. Outer furnace body; 112. Inner furnace body; 113. Dust removal furnace body; 114. Combustion air space; 1141. Combustion air space of the burner; 1142. Combustion air space in the lower section of the furnace; 115. Dust removal space; 116. Suspended combustion space; 12. Grate; 121. Spiral box; 122. Air distribution cap; 123. Central hollow shaft; 124. Fixing device; 125. Drive device; 126. Rotary joint; 13. Sight glass observation. 14. Thermocouple; 2. Feeding device; 21. Hopper; 22. Shredder; 23. Agitator; 24. Feeding airlock; 25. Conveying auger; 3. Burner; 31. Gas distributor; 32. Combustion air distributor; 4. Air supply device; 41. Backfire prevention pipe; 42. Material dispersion air pipe; 43. Furnace bottom combustion air pipe; 44. Furnace lower section combustion air pipe; 45. Burner combustion air pipe; 46. Blower; 5. Ash removal device; 51. Ash scraper; 52. Slag removal airlock; 53. Slag removal auger. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Figure 1 This is a structural schematic diagram of a suspended low-nitrogen, low-carbon combustion heating environmental protection furnace provided for an embodiment of this utility model.

[0037] like Figure 1 As shown in the figure, this application provides a suspended low-NOx, low-carbon combustion heating environmentally friendly furnace, including:

[0038] A combustion furnace 1 includes a furnace body 11 and a grate 12. The grate 12 is located at the bottom of the furnace body 11. The furnace body 11 includes an outer furnace body 111, an inner furnace body 112, and a dust removal furnace body 113 arranged sequentially from the outside to the inside. A combustion air space 114 is provided between the outer furnace body 111 and the inner furnace body 112. The dust removal furnace body 113 is located above the grate 12. A dust removal space 115 is provided between the dust removal furnace body 113 and the inner furnace body 112. The inner side of the dust removal furnace body 113 is a suspended combustion space 116.

[0039] Feeding device 2, which is located at the top of the combustion furnace 1 and is connected to the suspended combustion space 116;

[0040] Burner 3 is located on the side of the upper part of the combustion furnace 1. The burner 3 includes a gas distributor 31 and a combustion air distributor 32. The gas distributor 31 is connected to the dust removal space 115, and the combustion air distributor 32 is connected to the combustion air space 114.

[0041] Air supply device 4, which includes a blower 46, is used to supply air to the grate 12, the combustion air space 114 and the feeding device 2;

[0042] Ash removal device 5 is located at the bottom of the combustion furnace 1 and is connected to the suspended combustion space 116.

[0043] This application enables fluidized bed combustion in the combustion furnace 1 by setting up a grate 12. The raw materials only need to be simply cut and fed into the furnace for suspension combustion. By setting up a multi-layered furnace body 11, biomass can undergo primary fuel combustion at low temperature and then undergo secondary combustion purification at high temperature in the burner 3. This reduces the carry-out of dust, protects the burner 3 and thermal energy equipment, and results in high flue gas purity, high thermal efficiency, and high gasification intensity. It can realize automatic feeding, automatic slag discharge, and automatic high and low temperature control.

[0044] In some embodiments, the combustion air space 114 includes a burner combustion air space 1141 and a lower furnace combustion air space 1142. The air supply device 4 further includes a burner 3 combustion air pipe 45 and a lower furnace combustion air pipe 44. The blower 46 is sequentially connected to the burner 3 combustion air pipe 45, the burner combustion air space 1141, and the gas distributor 31. The blower 46 is sequentially connected to the lower furnace combustion air pipe 44, the lower furnace combustion air space 1142, and the suspended combustion space 116.

[0045] In some embodiments, the inner furnace body 112 has multiple through holes on the side wall of the combustion air space 1142 in the lower section of the furnace, so as to uniformly and circumferentially introduce combustion air into the suspended combustion space 116.

[0046] In some embodiments, the furnace body 11 can be divided into three sections in the axial direction: the upper furnace body 11, the lower furnace body 11, and the furnace bottom.

[0047] The dust removal space 115 is only distributed in the upper section of the furnace body 11. The dust removal furnace body 113 is cylindrical, with its top end fixedly connected to the top of the furnace body 11 and its bottom end suspended. By setting the dust removal space 115 at the top, dust in the gas can be blocked and purified by gravity settling.

[0048] The burner combustion air space 1141 is also located in the upper section of the furnace body 11, adjacent to the dust removal space 115. Through heat exchange with the dust removal space 115, the combustion air can be preheated, reducing the combustion activation energy. The lower section combustion air space 1142 is located in the lower section of the furnace body 11, which can heat the fuel combustion air and distribute it evenly into the furnace.

[0049] In some embodiments, the burner 3 is a W-type low-NOx, low-carbon burner 3, and the gas distributor 31 is a V-cone perforated plate distributor located at the center of the burner 3. The axial distance of the V-cone of the gas distributor 31 is extended to prolong the gas exhaust stroke space. Multiple through holes are uniformly opened at the bottom of the V-cone, and the opening direction is radial. The combustion air distributor 32 is located on the periphery of the gas distributor 31 and is coaxially arranged with the gas distributor 31. Multiple through holes are uniformly opened on the inner side of the combustion air distributor 32, facing the tail of the V-cone of the gas distributor 31.

[0050] During combustion, the sequence is as follows: first, oxygen-deficient combustion to reduce the peak flame temperature and control the flame temperature to not exceed 1200℃, thereby reducing nitrogen oxide production; then, gradually transitioning to oxygen-excess combustion; finally, oxygen-excess combustion is used to completely burn tar and hydrocarbons, resulting in zero carbon monoxide content in the flue gas and achieving a nitrogen oxide content of less than 30 mg / Nm³. 3 Carbon monoxide content less than 3 mg / Nm 3 .

[0051] By setting radial openings on the gas distributor 31 and axial openings on the combustion air distributor 32, the airflow is made uniformly mixed through counter-current diffusion. This increases the gas combustion distance and prolongs the combustion time, resulting in more reasonable gas distribution and combustion air dispersion, thus reducing combustion peaks. Because the volatile components in the fuel are fully combusted, a thermal energy conversion rate of over 95% can be achieved, more than double the efficiency of direct combustion, resulting in cleaner flue gas emissions.

[0052] Furthermore, by transitioning from oxygen-deficient combustion to oxygen-rich combustion, nitrogen oxides and carbon monoxide in the flue gas are reduced, achieving environmentally friendly emissions and preventing deflagration.

[0053] In some embodiments, the end of the burner 3 can be connected to a large heating equipment such as a hot air furnace, a steam generator, or a steam boiler to provide a heat source for it.

[0054] In some embodiments, the grate 12 includes:

[0055] The spiral box 121 has a hollow structure.

[0056] Fabric wind cap 122, including multiple fabric wind caps 122, the fabric wind cap 122 is disposed on the top of the spiral box 121;

[0057] A central hollow shaft 123 is installed at the bottom of the furnace body 11 by a fixing device 124, and a spiral box 121 is installed on the central hollow shaft 123, with the spiral box 121 communicating with the internal space of the central hollow shaft 123.

[0058] A drive device 125 is located below the furnace body 11 and is used to drive the spiral box 121 to rotate.

[0059] Rotary joint 126 is located at the bottom of the central hollow shaft 123.

[0060] In some embodiments, the spiral box 121 includes an upper spiral plate and a lower heat-resistant plate, with the lower part being the heat-resistant plate. The spiral box 121 has a spiral distance of one and a half turns, and the vertical inclination angle of the spiral box 121 is less than 30°. The upper circumferential spiral box 121 serves to evenly distribute air and support the raw materials, while the lower overlapping spiral box 121 can control the height of the slag discharge outlet and the amount of slag discharged, preventing material collapse.

[0061] In some embodiments, the fixing device 124 is a cross-shaped fixing device 124.

[0062] In some embodiments, the air supply device 4 further includes a furnace bottom combustion air duct 43, which is connected to the central hollow shaft 123 via a rotary joint 126, and the blower 46 communicates with the central hollow shaft 123 and the internal space of the spiral box 121 via the furnace bottom combustion air duct 43.

[0063] Inside the combustion furnace 1, biomass fuel is burned under the action of combustion air. The combustion air is burned by the combustion air dispersed by the air distribution cap 122, the multi-layer radial openings of the lower section of the inner furnace body 112 and the material dispersion of the material by the feeding device. The three types of combustion air work together to suspend and fluidize the lightweight material, resulting in high-intensity, uniform, low-temperature combustion and gasification. The temperature inside the furnace body 11 is controlled at 700-900℃ for continuous and stable combustion. The high-temperature gas produced is removed by dust removal space 115 between the upper furnace body 112 and the dust removal furnace body 113 before entering the burner 3 for uniform low-nitrogen and low-carbon combustion.

[0064] By setting multiple combustion air inlets, the combustion air is evenly distributed in the spiral box 121 air distribution cap 122 and the circumferential perforated plate on the inner wall of the furnace body 11, so that the lightweight materials are fluidized and suspended under the action of strong airflow and burn evenly. The combustion intensity is high, it is easy to ignite and easy to start, and the heating rate is fast. It will not cause local high temperature slagging or incomplete combustion.

[0065] In some embodiments, the feeding device 2 includes:

[0066] hopper 21, the hopper 21 being used to feed biomass;

[0067] Shredder 22, which is located inside the hopper 21, is used to shred biomass;

[0068] A mixer 23 is located at the bottom of the hopper 21 and is used to mix the biomass.

[0069] Feeder airlock fan 24, which is located below the agitator 23 inside the hopper 21;

[0070] The material conveying auger 25 has its inlet connected to the outlet of the hopper 21, and its outlet is located at the top of the furnace body 11 and is connected to the interior of the furnace body 11.

[0071] In some embodiments, biomass fuel is fed into silo 21 and cut into 10-30mm biomass segments by shredder 22. The biomass segments in silo 21 are agitated by finned mixer and fed into conveying auger 25 by feed airlock fan 24.

[0072] In some embodiments, the agitator 23 is a finned agitator, which can be used to agitate and stir the biomass fuel anti-blocking material.

[0073] In some embodiments, the air supply device 4 includes a backfire prevention pipe 41 and a material dispersion air pipe 42. The blower 46 is connected to the discharge port of the silo 21 through the backfire prevention pipe 41 to prevent backfire of the biomass burning in the furnace body 11. The blower 46 is connected to the outlet of the conveying auger through the material dispersion air pipe 42 to disperse the biomass material fed into the furnace body 11.

[0074] During the feeding process, the shredded biomass segments in the hopper 21 are agitated by the agitator 23 and then fed into the conveying auger 25 by the feed airlock fan 24. The conveying auger 25, under the action of anti-backfire air and dispersing air, feeds the material into the furnace and distributes it evenly.

[0075] By setting up the anti-backfire pipe 41 and the material dispersion air pipe 42, it is beneficial to control the combustion temperature inside the furnace and keep the temperature inside the furnace body 11 stable between 700-900℃, ensuring that the equipment is not corroded by high temperature.

[0076] In some embodiments, the ash removal device 5 includes:

[0077] The scraper 51 is located at the bottom of the furnace body 11 and is in contact with the inner bottom surface of the furnace body 11.

[0078] Ash discharge pipe, which is located below the furnace body 11 and is connected to the suspended combustion space 116;

[0079] Ash discharge shut-off fan, wherein the ash discharge shut-off fan is installed inside the ash discharge pipe;

[0080] Ash discharge auger, which is located at the outlet of the ash discharge pipe.

[0081] In some embodiments, the scraper blade 51 is a cross-shaped scraper blade 51, and the ash discharge fan and ash discharge auger can be interlocked with the temperature control of the thermocouple 14.

[0082] In some embodiments, the side wall of the furnace body 11 is provided with a sight glass observation hole 13 and a thermocouple 14. The sight glass observation hole 13 is connected to the suspended combustion space 116, and the thermocouple 14 is used to measure the temperature of the suspended combustion space 116.

[0083] In some embodiments, the thermocouple 14 is disposed on the upper part of the scraper plate 51 to detect the thickness of the ash and slag and control the temperature of the ash and slag layer to 50-150°C.

[0084] By setting up a multi-layer furnace body 11 and multiple combustion air inlets, the combustion air is evenly distributed in the spiral box 121 air distribution cap 122 and the circumferential perforated plate on the inner wall of the furnace body 11. This allows the lightweight material to be fluidized and suspended under the action of strong airflow for uniform combustion. The combustion air from three directions works together to suspend and fluidize the lightweight material, resulting in high-intensity, uniform, low-temperature combustion and gasification. The combustion intensity is high, it is easy to ignite, easy to start, and the heating rate is fast.

[0085] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0086] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0087] The above provides a detailed description of a transformer fault monitoring device and its monitoring method provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A suspended low-nitrogen and low-carbon combustion heating environmentally friendly stove, characterized in that, The application relates to a biomass combustion furnace. The combustion furnace comprises a furnace body and a grate arranged at the bottom of the furnace body, the furnace body comprises an outer furnace body, an inner furnace body and a dust removal furnace body arranged in sequence from outside to inside, a combustion air space is arranged between the outer furnace body and the inner furnace body, the dust removal furnace body is arranged above the grate, a dust removal space is arranged between the dust removal furnace body and the inner furnace body, and the inner side of the dust removal furnace body is a suspension combustion space. A feeding device is arranged at the top of the combustion furnace and communicates with the suspension combustion space. A burner is arranged at the side of the upper portion of the combustion furnace, the burner comprises a gas distributor and a combustion air distributor, the gas distributor communicates with the dust removal space, and the combustion air distributor communicates with the combustion air space. An air supply device comprises a blower, and the air supply device is used for providing air to the grate, the combustion air space and the feeding device. An ash discharging device is arranged at the bottom of the combustion furnace and communicates with the suspension combustion space.

2. The suspended low-nitrogen and low-carbon combustion heating environmental protection stove according to claim 1, characterized in that, The combustion air space comprises a burner combustion air space and a lower furnace section combustion air space, the air supply device further comprises a burner combustion air pipe and a lower furnace section combustion air pipe, the blower communicates with the gas distributor through the burner combustion air pipe and the burner combustion air space in sequence, and the blower communicates with the suspension combustion space through the lower furnace section combustion air pipe and the lower furnace section combustion air space in sequence.

3. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 1, characterized in that, The grate comprises: A spiral box body which is a hollow structure. A plurality of air distribution hoods are arranged at the top of the spiral box body. A central hollow shaft is installed at the bottom of the furnace body through a fixing device, the spiral box body is installed on the central hollow shaft, and the spiral box body communicates with the internal space of the central hollow shaft. A driving device is arranged below the furnace body and is used for driving the spiral box body to rotate. A rotary joint is arranged at the bottom of the central hollow shaft.

4. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 3, characterized in that, The air supply device further comprises a furnace bottom combustion air pipe, the furnace bottom combustion air pipe is connected with the central hollow shaft through the rotary joint, and the blower communicates with the internal space of the central hollow shaft and the spiral box body through the furnace bottom combustion air pipe.

5. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 1, characterized in that, The feeding device comprises: A bunker which is used for feeding biomass. A shredder which is arranged in the bunker and is used for shredding biomass. A stirrer which is arranged at the bottom of the bunker and is used for stirring biomass. A feeding air lock which is arranged below the stirrer in the bunker. A material conveying auger, the inlet of the material conveying auger communicates with the outlet of the bunker, the outlet of the material conveying auger is arranged at the top of the furnace body and communicates with the internal space of the furnace body.

6. The suspended low-nitrogen low-carbon combustion heating environmental protection stove according to claim 5, characterized in that, The air supply device comprises an anti-backfire pipe and a material dispersion air pipe, the air blower is communicated with the discharge port of the bunker through the anti-backfire pipe to prevent the backfire of the biomass burning in the furnace body, and the air blower is communicated with the outlet of the material conveying auger through the material dispersion air pipe to blow away the biomass material put into the furnace body.

7. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 1, characterized in that, The ash discharging device comprises: an ash scraping plate arranged at the bottom of the furnace body and attached to the inner bottom surface of the furnace body; an ash discharging pipe arranged below the furnace body and communicated with the suspension combustion space; an ash discharging damper arranged in the ash discharging pipe; an ash discharging auger arranged at the outlet of the ash discharging pipe.

8. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 1, characterized in that, A sight glass observation hole and a thermocouple are arranged on the side wall of the furnace body, the sight glass observation hole is communicated with the suspension combustion space, and the thermocouple is used to measure the temperature of the suspension combustion space.

9. The environmentally friendly suspended low-nitrogen and low-carbon combustion heating stove according to claim 1, characterized in that, The burner is a W-type low-nitrogen and low-carbon burner, the gas distributor is a V-cone type multi-hole plate distributor arranged at the center of the burner, a plurality of through holes are uniformly opened in the V-cone bottom of the gas distributor along the radial direction of the gas distributor, the combustion air distributor is arranged on the circumferential side of the gas distributor and coaxially arranged with the gas distributor, and a plurality of through holes are uniformly opened in the inner side of the combustion air distributor and directed to the V-cone tail of the gas distributor.

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