CN221028238U - Downdraft biomass particle pyrolysis carbonization furnace - Google Patents
Downdraft biomass particle pyrolysis carbonization furnace Download PDFInfo
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- CN221028238U CN221028238U CN202322647281.7U CN202322647281U CN221028238U CN 221028238 U CN221028238 U CN 221028238U CN 202322647281 U CN202322647281 U CN 202322647281U CN 221028238 U CN221028238 U CN 221028238U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 78
- 238000003763 carbonization Methods 0.000 title claims abstract description 69
- 239000002028 Biomass Substances 0.000 title claims abstract description 40
- 239000002245 particle Substances 0.000 title claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005524 ceramic coating Methods 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000003610 charcoal Substances 0.000 description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000010000 carbonizing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000035425 carbon utilization Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Coke Industry (AREA)
Abstract
The utility model discloses a downdraft biomass particle pyrolysis carbonization furnace, which comprises a bucket elevator on one side of a pyrolysis carbonization furnace body, wherein the pyrolysis carbonization furnace body is formed by concentrically embedding an inner furnace wall and an outer furnace wall, the upper ends of the inner furnace wall and the outer furnace wall are fixed with a top cover in a sealing way, an annular cavity formed between the inner furnace wall and the outer furnace wall is an annular air passage, the lower part of the pyrolysis carbonization furnace body is fixed with the top of a funnel-shaped carbon bin, two bifurcated discharging hoppers are fixed below the carbon bin, and a discharging port is connected with a spiral conveyor; the top of the annular air passage is fixedly connected with a gas outlet pipe which is connected with an induced draft fan; an air inlet pipe is arranged on the pyrolysis carbonization furnace body, passes through the inner furnace wall and the outer furnace wall, and the air inlet pipe orifice enters an oxidation zone in the pyrolysis carbonization furnace body, and is connected with a blower to provide oxygen for pyrolysis carbonization of biomass materials and control the carbonization process. The device has the advantages of simple structure and process, high pyrolysis carbonization efficiency and high utilization rate.
Description
Technical Field
The utility model relates to a pyrolysis carbonization furnace which takes biomass compressed particles as raw materials, heats the biomass compressed particles, and performs anaerobic combustion to convert the biomass compressed particles into combustible gas and solid carbon.
Background
At present, the national and international call for implementing the "two carbon" strategy is increasing, and the requirements and measures proposed by the government are increasing to achieve the "two carbon" strategy goal. The "carbon reaching peak" refers to the point where the carbon dioxide emission reaches the highest historical value, and is the inflection point where the carbon dioxide emission is reduced from increasing. The carbon neutralization refers to the direct and indirect carbon dioxide discharged by the artificial activity of a certain area in a certain time, and the carbon dioxide counteracts the carbon dioxide absorbed by the area, so that the carbon dioxide achieves the net zero discharge. The energy is an indispensable resource for economic development and social progress, the duty ratio of non-fossil energy in the energy consumption of China is smaller, and the dependence of oil and gas resources on the outside is higher. Along with the promotion of industrialization and town, the energy consumption is increased rigidly, so as to meet the requirements of economic and social development on energy, enhance the stability, safety and sustainability of energy supply, and develop and popularize biomass energy is a long-term task in the energy strategy of China in a quite long period of time. Agriculture and forestry biomass refers to straw produced in agricultural production, cutting and processing residues produced in forestry production, and wood waste produced in social daily life. First, agroforestry biomass is a renewable resource that is environmentally friendly during growth, harvesting, processing, and use, with no or little pollution. And secondly, in the process of intensively preparing carbon from the agriculture and forestry biomass, the generated combustible gas can replace natural gas for centralized use, so that the method has industrial utilization value and can obtain economic benefit. The original agriculture and forestry biomass raw material is waste material in production, and is mainly used as fuel to directly burn to generate heat at present. In the prior art, the conditions that the pyrolysis carbonization furnace has a complex structure and a complex process and the energy utilization rate generated in the pyrolysis carbonization process is low are commonly existed.
Disclosure of utility model
The utility model aims at providing a pyrolysis carbonization furnace and a using method of the pyrolysis carbonization furnace, wherein the pyrolysis carbonization furnace is used for pyrolyzing and carbonizing agriculture and forestry biomass compressed particles into fuel gas and solid carbon by taking the agriculture and forestry biomass compressed particles as raw materials. The downdraft biomass particle pyrolysis carbonization furnace has the advantages of simple structure and process and high pyrolysis carbonization efficiency and utilization rate.
In order to meet the requirements, the technical scheme of the downdraft biomass particle pyrolysis carbonization furnace is characterized in that: the device comprises a bucket elevator at one side of a pyrolysis carbonization furnace body, wherein the pyrolysis carbonization furnace body is formed by concentrically embedding an inner furnace wall and an outer furnace wall, the upper ends of the inner furnace wall and the outer furnace wall are fixed with a top cover in a sealing way, an annular cavity formed between the inner furnace wall and the outer furnace wall is an annular air passage, the lower part of the pyrolysis carbonization furnace body is fixed with the top of a funnel-shaped carbon bin, and two bifurcated discharging hoppers are fixed below the carbon bin; the bottom of the carbon bin is fixed with the top end of the discharging hopper, the carbon bin is communicated with the discharging hopper, the discharging openings of the outlets of the two discharging hoppers are provided with double switch plates controlled by hydraulic cylinders, and the discharging openings are connected with the screw conveyor; according to the function pyrolysis carbonization furnace body, a feeding zone, a drying zone, a pyrolysis zone, an oxidation zone and a reduction zone are sequentially arranged from top to bottom, wherein upward shutters are arranged on the inner furnace walls of the pyrolysis zone, the oxidation zone and the reduction zone, so that the inside of the pyrolysis carbonization furnace body is communicated with an annular air passage, a mechanical material flattening device is arranged above the feeding zone, an ash outlet is arranged at the bottom of the annular air passage and is used for removing dust in the annular air passage, and a rotary valve is arranged on the ash outlet; the top of the annular air passage is fixedly connected with a gas outlet pipe which is connected with an induced draft fan; an air inlet pipe is arranged on the pyrolysis carbonization furnace body, passes through the inner furnace wall and the outer furnace wall, and an air inlet pipe orifice enters an oxidation zone in the pyrolysis carbonization furnace body, and is connected with a blower to provide oxygen for pyrolysis carbonization of biomass materials and control the carbonization process; and a circulating cooling water pipe is arranged in the carbon bin to cool the materials in the carbon bin.
The inner furnace wall and the outer furnace wall are made of steel plates, rock wool and aluminum silicate heat-insulating cotton are sequentially coated on the outer surface of the outer furnace wall from outside to inside, and a high-temperature-resistant ceramic coating layer is sprayed on the inner surface of the outer furnace wall.
The ash outlet is formed in the whole annular air passage, two opposite ash outlets are formed in the whole annular air passage, and the bottom surfaces of the annular air passages adjacent to the ash outlets are inclined surfaces facing the ash outlets respectively, so that dust on the bottom surfaces of the annular air passages can be discharged from the ash outlets.
The bottom of annular air flue is provided with the deashing subassembly, the deashing subassembly includes annular guide rail, installs rolling element and chain on the guide rail, is fixed with the deashing board on the chain, and the chain is by sprocket and motor drive, and the deashing board is scraped the back and forth to the internal surface of annular air flue and is rubbed to clear away the dust that adheres to annular air flue surface, and brings the ash to the ash outlet and discharge, the deashing subassembly four group sections altogether, each group section structure is the same.
A hole cover is arranged above the bifurcated discharging hopper, and a maintenance/material passing hole is arranged on the hole cover.
The circulating cooling water pipes are arranged in the carbon bin in two rows of five columns.
The outside of the carbon bin is coated with a circulating cooling water jacket, cooling water in the circulating cooling water jacket is communicated with cooling water in a circulating cooling water pipe, and the circulating cooling water jacket is driven to circulate by the same water pump.
According to the downdraft biomass particle pyrolysis carbonization furnace designed according to the scheme, biomass raw materials are carbonized through the pyrolysis furnace to obtain combustible gas, and the combustible gas is used for producing steam, hot water, hot oil, power generation and the like through combustion, so that heat is provided for industrial production, such as wood steaming, wood drying, hot-pressed products and the like in wood processing. The other product carbon obtained in the biomass pyrolysis carbonization process can be directly used as fuel or after being subjected to activation treatment, the carbon becomes active carbon, and is mainly used as an adsorbent and applied to environmental protection industries such as water treatment, air purification and the like and food industry. Therefore, the process of pyrolyzing and carbonizing the agriculture and forestry biomass is a processing industrial process with high-efficiency utilization of raw materials and excellent environmental protection benefit and economic benefit. Compared with the method which takes the carbon as the fuel and takes the biomass compression block or the particles as the fuel directly, the method has the advantages that the carbon is easy to ignite, the combustion process is stable, the temperature fluctuation is small, the combustion process has no harmful gas emission, the pollution to the use environment is small, and the like. Compared with the combustion of natural gas, coal gas and other fuels, the combustion heating mode of using biomass granular carbon as the fuel has no risk of deflagration, and the use process is safe. The utility model is a biomass utilization technology which has very good environmental protection, economy and environmental benefit no matter in the earlier pyrolysis carbonization process or in the later gas and carbon utilization.
Drawings
Figure 1 is a front view of a downdraft biomass particle pyrolysis carbonization furnace,
FIG. 2 is an expanded view of the ash port and ash removal assembly reflecting the position of the bottom of the annular air duct;
Fig. 3 is an enlarged view of a portion of the ash removal assembly of region F of fig. 1.
In the figure: 1. a pyrolysis carbonization furnace body; 2. bucket elevator; 3. an inner furnace wall; 4. an outer furnace wall; 5. a top cover; 6. rock wool; 7. aluminum silicate heat-insulating cotton; 8. a high temperature resistant ceramic coating layer; 9. an annular airway; 10. a carbon bin; 11. discharging a hopper; 12. a hole cover; 13. overhauling/material passing holes; 14. a feed opening; 15. a hydraulic cylinder; 16. a double switch board; 17. a screw conveyor; 18. a feed zone; 19. a drying zone; 20. a pyrolysis zone; 21. an oxidation zone; 22. a reduction zone; 23. a shutter; 24. a mechanical material leveling device; 25. an ash outlet; 26. a rotary valve; 27. an ash removal component; 28. a guide rail; 29. a rolling element; 30. a chain; 31. an ash removal plate; 32. a sprocket; 33. a motor; 34. a gas outlet pipe; 35. an air inlet pipe; 36. a circulating cooling water pipe; 37. a circulating cooling water jacket; 38. and a discharging slideway.
Detailed Description
The utility model is further described below by way of examples.
Fig. 1 is a schematic structural view of a downdraft biomass particle pyrolysis carbonization furnace. The pyrolysis carbonization furnace comprises a bucket elevator 2 on one side of a pyrolysis carbonization furnace body 1, wherein the pyrolysis carbonization furnace body 1 is formed by concentrically sleeving an inner furnace wall 3 and an outer furnace wall 4, the upper ends of the inner furnace wall 3 and the outer furnace wall 4 are fixed with a top cover 5 in a sealing manner, the inner furnace wall 3 and the outer furnace wall 4 are made of steel plates, rock wool 6 and aluminum silicate heat preservation cotton 7 are sequentially coated on the outer surface of the outer furnace wall 4 from outside to inside, and a high-temperature-resistant ceramic coating layer 8 is sprayed on the inner surface of the outer furnace wall 4. The annular cavity formed between the inner furnace wall 3 and the outer furnace wall 4 is an annular air passage 9, the lower surface of the pyrolysis carbonization furnace body 1 is fixed with the top of a funnel-shaped carbon bin 10, and two bifurcated discharging hoppers 11 are fixed below the carbon bin 10; the bottom of the charcoal bin 10 is fixed with the top of the blanking hopper 11, the charcoal bin 10 is communicated with the blanking hopper 11, a hole cover 12 is arranged above the bifurcated blanking hopper 11, and a maintenance/material passing hole 13 is arranged on the hole cover 12. The discharging openings 14 at the outlet of the discharging hopper 11 are respectively provided with a double switch plate 16 controlled by a hydraulic cylinder 15, and the discharging openings 14 are connected with a screw conveyor 17; according to the function, a feeding area 18, a drying area 19, a pyrolysis area 20, an oxidation area 21 and a reduction area 22 are sequentially arranged in the pyrolysis carbonization furnace body 1 from top to bottom, wherein upward blinds 23 are arranged on the inner furnace walls 3 of the pyrolysis area 20, the oxidation area 21 and the reduction area 22, so that the interior of the pyrolysis carbonization furnace body 1 is communicated with an annular air passage 9, a mechanical material flattening device 24 is arranged above the feeding area 18, an ash outlet 25 is arranged at the bottom of the annular air passage 9 and is used for removing dust in the annular air passage 9, and a rotary valve 26 is arranged on the ash outlet 25; the ash outlet is formed in the whole annular air passage 9 of the ash outlet 25, two opposite sides are arranged on the bottom surface of the annular air passage 9 adjacent to the ash outlet 25, and the inclined surfaces facing the ash outlets 25 are respectively arranged on the bottom surface of the annular air passage 9, so that dust on the bottom surface of the annular air passage 9 can be discharged from the ash outlet 25, as shown in fig. 2. The bottom of the annular air passage 9 is provided with a dust removing component 27 as shown in fig. 3, the dust removing component 27 comprises an annular guide rail 28, a rolling body 29 and a chain 30 are arranged on the guide rail 28, a dust removing plate 31 is fixed on the chain 30, the chain 30 is driven by a chain wheel 32 and a motor 33, the dust removing plate 31 scrapes the inner surface of the annular air passage 9 back and forth so as to remove dust attached to the surface of the annular air passage 9 and bring the dust to a dust outlet 25 for discharge, and the dust removing component 27 has four groups of sections, and the structures of the groups of sections are identical. The top of the annular air passage 9 is fixedly connected with a gas outlet pipe 34, and the gas outlet pipe 34 is connected with an induced draft fan (not shown in the figure); an air inlet pipe 35 is arranged on the pyrolysis carbonization furnace body 1, the air inlet pipe 35 penetrates through the inner furnace wall 3 and the outer furnace wall 4, an opening of the air inlet pipe 35 enters an oxidation zone 21 in the pyrolysis carbonization furnace body 1, the air inlet pipe 35 is connected with a blower (not shown in the figure), and oxygen is provided for pyrolysis carbonization of biomass materials and the carbonization process is controlled; a circulating cooling water pipe 36 is arranged in the carbon bin 10 to cool the materials in the carbon bin 10. The circulating cooling water pipes 36 are arranged in the carbon bin 10 in two rows of five. The outside of the carbon bin 10 is coated with a circulating cooling water jacket 37, cooling water in the circulating cooling water jacket 37 is communicated with cooling water in a circulating cooling water pipe 36, and the circulating cooling water is driven by the same water pump.
The application method of the downdraft biomass particle pyrolysis carbonization furnace comprises the following steps:
(1) The biomass particle materials are fed into the pyrolysis carbonization furnace body 1 through the bucket elevator 2, the material surface of the materials is scraped by the mechanical material leveling device 24 arranged in the feeding area inside the pyrolysis carbonization furnace body 1, and the mechanical material leveling device 24 moves up and down in the feeding area of the pyrolysis carbonization furnace body 1 under the drive of the lifting mechanism;
(2) Along with the continuous pyrolysis carbonization process, the materials gradually descend, when the materials pass through a drying zone, gasified pyrolysis fuel gas heats a furnace wall, and then the materials in the furnace are heated, after drying treatment, the materials enter a pyrolysis zone 20 and an oxidation zone 21, pyrolysis reaction is carried out on the materials by utilizing high temperature in the furnace, the materials in the oxidation zone become biomass charcoal after being combusted, high-temperature fuel gas generated in the pyrolysis carbonization process of the materials enters an annular air passage 9 through a louver 23, and biomass materials in a drying zone 19 in the pyrolysis carbonization furnace body are dried by utilizing heat of the fuel gas; the material enters a reduction zone 22 for cooling reduction treatment; and high-temperature fuel gas generated by the pyrolysis reaction of the materials is led out of the pyrolysis carbonization furnace body 1 through a fuel gas outlet pipe 34;
(3) The switch of the induced draft fan is turned on, suction force is generated inside the gas outlet pipe by the induced draft fan, high-temperature gas generated by pyrolysis reaction is led out, the gas flows inside the annular air passage 9, and large-particle dust carried in the gas is settled by the annular air passage 9;
(4) Cooling water is introduced into the circulating cooling water pipe 36 and the circulating cooling water jacket 37 to cool charcoal which falls into the charcoal bin 10 and is pyrolyzed by biomass granular materials, the charcoal falls into the charcoal bin 10, in the charcoal bin 10, firstly contacts the inner surface of the charcoal bin 10, the charcoal is cooled by the circulating cooling water jacket 37 coated by the outer surface of the charcoal bin 10, then the charcoal is further rapidly cooled by the circulating cooling water pipe 36 arranged in the charcoal bin 10, the charcoal after being cooled by the circulating cooling water pipe 36 enters the bifurcation blanking port 14, the charcoal falls into a spiral conveyor after passing through the bifurcation blanking port 14, and the spiral conveyor 17 conveys the charcoal to be discharged along the discharging slideway 38;
(5) When the arching and blocking phenomena occur in the discharging process, starting a double switch plate 16 arranged at the bottom of a forked discharging opening 14, temporarily cutting off carbon, and opening a maintenance/material through hole 13 formed in the forked discharging opening 14 to manually feed and remove faults;
(6) After a period of use, the dust deposited in the annular air passage 9 is cleaned periodically by the ash cleaning assembly 27: the motor 33 of the ash removing assembly 27 arranged at the bottom of the annular air passage 9 is started, the motor 33 drives the chain wheel 32 and the chain 30, and drives each ash removing assembly 27 to move back and forth on the annular guide rail 28, the ash removing plate 31 on the ash removing assembly 27 scrapes dust accumulated on two sides of the annular air passage 9 and pushes the dust to the ash outlet 25, and the dust accumulated in the annular air passage 9 is discharged out of the annular air passage 8 through the ash outlet 25 from the opened rotary valve 26.
However, the above examples are only preferred embodiments of the present utility model, and do not limit the scope of the present utility model. All equivalent changes and modifications within the scope of the present utility model are intended to fall within the scope of the present utility model.
Claims (7)
1. A downdraft biomass particle pyrolysis carbonization furnace is characterized in that: the device comprises a bucket elevator at one side of a pyrolysis carbonization furnace body, wherein the pyrolysis carbonization furnace body is formed by concentrically embedding an inner furnace wall and an outer furnace wall, the upper ends of the inner furnace wall and the outer furnace wall are fixed with a top cover in a sealing way, an annular cavity formed between the inner furnace wall and the outer furnace wall is an annular air passage, the lower part of the pyrolysis carbonization furnace body is fixed with the top of a funnel-shaped carbon bin, and two bifurcated discharging hoppers are fixed below the carbon bin; the bottom of the carbon bin is fixed with the top end of the discharging hopper, the carbon bin is communicated with the discharging hopper, the discharging openings of the outlets of the two discharging hoppers are provided with double switch plates controlled by hydraulic cylinders, and the discharging openings are connected with the screw conveyor; according to the function pyrolysis carbonization furnace body, a feeding zone, a drying zone, a pyrolysis zone, an oxidation zone and a reduction zone are sequentially arranged from top to bottom, wherein upward shutters are arranged on the inner furnace walls of the pyrolysis zone, the oxidation zone and the reduction zone, so that the inside of the pyrolysis carbonization furnace body is communicated with an annular air passage, a mechanical material flattening device is arranged above the feeding zone, an ash outlet is arranged at the bottom of the annular air passage and is used for removing dust in the annular air passage, and a rotary valve is arranged on the ash outlet; the top of the annular air passage is fixedly connected with a gas outlet pipe which is connected with an induced draft fan; an air inlet pipe is arranged on the pyrolysis carbonization furnace body, passes through the inner furnace wall and the outer furnace wall, and an air inlet pipe orifice enters an oxidation zone in the pyrolysis carbonization furnace body, and is connected with a blower to provide oxygen for pyrolysis carbonization of biomass materials and control the carbonization process; and a circulating cooling water pipe is arranged in the carbon bin to cool the materials in the carbon bin.
2. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein the inner furnace wall and the outer furnace wall are made of steel plates, rock wool and aluminum silicate heat preservation cotton are sequentially coated on the outer surface of the outer furnace wall from outside to inside, and a high-temperature-resistant ceramic coating layer is sprayed on the inner surface of the outer furnace wall.
3. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein two opposite ash outlets are formed on the whole annular air passage, and the bottom surfaces of the annular air passages adjacent to the ash outlets are inclined surfaces facing the ash outlets respectively, so that dust on the bottom surfaces of the annular air passages can be discharged from the ash outlets.
4. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein an ash removal component is arranged at the bottom of the annular air passage, the ash removal component comprises an annular guide rail, a rolling body and a chain are arranged on the guide rail, an ash removal plate is fixed on the chain, the chain is driven by a chain wheel and a motor, the ash removal plate cuts and rubs the inner surface of the annular air passage back and forth to remove dust attached to the surface of the annular air passage and bring the dust to an ash outlet for discharge, and the ash removal component has four groups of sections, and the structures of the groups of sections are identical.
5. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein a hole cover is arranged above the bifurcated discharging hopper, and a maintenance/material passing hole is arranged on the hole cover.
6. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein the circulating cooling water pipes are arranged in the carbon bin in two rows of five.
7. The downdraft biomass particle pyrolysis carbonization furnace according to claim 1, wherein the outside of the carbon bin is coated with a circulating cooling water jacket, cooling water in the circulating cooling water jacket is communicated with cooling water in a circulating cooling water pipe, and the circulating cooling water jacket and the circulating cooling water pipe are driven to circulate by the same water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322647281.7U CN221028238U (en) | 2023-09-28 | 2023-09-28 | Downdraft biomass particle pyrolysis carbonization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322647281.7U CN221028238U (en) | 2023-09-28 | 2023-09-28 | Downdraft biomass particle pyrolysis carbonization furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221028238U true CN221028238U (en) | 2024-05-28 |
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ID=91169088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322647281.7U Active CN221028238U (en) | 2023-09-28 | 2023-09-28 | Downdraft biomass particle pyrolysis carbonization furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221028238U (en) |
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2023
- 2023-09-28 CN CN202322647281.7U patent/CN221028238U/en active Active
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