CN203687019U - Biomass secondary cracking device - Google Patents

Biomass secondary cracking device Download PDF

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Publication number
CN203687019U
CN203687019U CN201320747562.3U CN201320747562U CN203687019U CN 203687019 U CN203687019 U CN 203687019U CN 201320747562 U CN201320747562 U CN 201320747562U CN 203687019 U CN203687019 U CN 203687019U
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combustion chamber
boiler
area
catalyst bed
oxidation reaction
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CN201320747562.3U
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黄荣胜
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黄荣胜
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

The utility model discloses a biomass secondary cracking device. The device comprises a feeding hole, an exhaust port, a combustion chamber and a slag discharging hole, wherein the feeding hole is connected with the combustion chamber; the exhaust port is formed above the combustion chamber; the slag discharging hole is formed below the combustion chamber; the combustion chamber comprises a drying area, a reducing area, an oxidizing reaction area, an air distributing space, a catalyst bed and a residual heat collecting device; the drying area, the reducing area and the oxidizing reaction area are positioned below the combustion chamber; the drying area is connected with the reducing area; the reducing area is connected with the oxidizing reaction area; the air distributing space is positioned above the drying area; the catalyst bed is arranged above the gas distributing space; the residual heat collecting device is arranged on the upper part of the combustion chamber. By adopting the device, the emission of smoke dust as well as harmful gases such as SO2 and NOX are reduced effectively, smoke dust is eliminated, each environmental protection and energy-saving index is superior to the national standard, the electric energy is saved by over 30 percent, convenience is brought to maintenance, the maintenance cost is reduced, and biomass catalytic thermal cracking gasification and a boiler can be used in a combined way.

Description

The device of living beings second pyrolysis
Technical field
The utility model relates to the square law device of combining utilization containing biomass catalyzing thermal cracking gasification with boiler,, the clean fuel gas obtaining by biomass catalyzing thermal cracking gasification, with the original conventional energy of this gas instead boiler, boiler afterheat can be reclaimed to method and the device for comprehensive cyclic utilization such as boiler heating simultaneously.
Background technology
Vertical, the Horizontal manual burning boiler of existing use, chain-grate boiler, CFBB etc., there is a large amount of application in all trades and professions, effect is good, but all existing raw material can not completing combustion, chimney emits a large amount of black smokes, dust is many, need to do larger purifying and dedusting investment, and thermal efficiency loss is larger.
For example the power economized boiler of disclosed Chinese patent report is as follows:
1. application number: CN02275213.7, title: there is device for eliminating smoke and dust horizontal boiler in stove, application (patent right) people: Wang Qing; Sun Donghong; Address: No. 169, Changchun road, Chuanying District, Jilin City, Jilin Province, summary: belong to stratiform coal burning horizontal field of boilers, relate to the horizontal boiler with device for eliminating smoke and dust in stove.For solving the problems such as existing boiler black smoke, dust polluting environment, efficiency be low, in burner hearth, above coal seam, be provided with porous layering stagger arrangement shock flow type device for eliminating smoke and dust.It is at least three layers of secondary air channel that are arranged in parallel, on its secondary air channel being provided with layer both sides correspondence, correspondence is provided with several nozzles in opposite directions, each layer of airduct two ends are connected with Secondary Air air main, and this device can be located at inside and outside burner hearth, and each layer of secondary air channel is fixed on the furnace wall of both sides.Be that concentric shafts or eccentric shaft are arranged with layer secondary air channel top nozzle.
2. the patent No.: 200810013167, title: horizontal coal combustion and gasification environmentally-friendly boiler, open (bulletin) day: 20100317, application (patent right) people: Liu Weiyi, invention (design) people: Liu Weiyi, summary: comprise body of heater, fire grate, air channel dish, square air channel box, burner hearth and a combustion chamber; Upper of furnace body is flat-top, body of heater just, be vertical plane with both sides below, body of heater is horizontal square-box-shaped structure; There are multiple waterpipe type fire grates, correspondingly be provided with wind channel tube and be provided with multiple air ports eye above, the two ends of wind channel tube are connected with horizontal trunk wind channel tube respectively, laterally trunk wind channel tube two ends are connected with longitudinal trunk wind channel tube two ends, form air channel dish structure of square grate-type, before the outer wall at burner hearth middle part and both sides are provided with square air channel box, and air channel box is provided with hole, multiple air channel and airduct is housed and is communicated with burner hearth, forms secondary air duct structure; In the middle of burner hearth and combustion chamber, be provided with air channel dish, its center arranges spray-hole, and surrounding is provided with multiple wind eyelets, and a side of air channel dish is provided with and connects airduct formation tertiary air road structure.
3. the patent No.: 201210277607, title: the method for miniature boiler burning II, the smoke abatement and dust control of III class bituminous coal combustion, open (bulletin) number: CN102798120A; Application (patent right) people: Qingdao Yanyangtian Environment Protection Co., Ltd., invention (design) people: Zhang Guojun; Guo Xiaoyan; Li Xiuqiang; Yang Ji is strong; Chen Lin; Summary: a kind of method that the utility model discloses miniature boiler burning II, the smoke abatement and dust control of III class bituminous coal combustion, it comprises: 1) burning, smoke elimination: when boiler combustion, a wind enters fire grate, coal in burner hearth takes fire, the chimney arch that the flue gas producing in combustion process arranges by burner hearth rear in burner hearth blocks the flue gas in burner hearth, produce negative pressure simultaneously, Secondary Air is automatically opened toward the interior air-supply of chimney arch and is made chimney arch interruption-forming oxygen-rich area, and flue dust is in the fully burning again of chimney arch mouth; 2) dedusting: carry out after heat exchange after burning, flue gas after eliminating smoke enter the first heat transfer zone of boiler, enter successively the perpendicular smoke pipe of some rows in the second heat transfer zone, its direction be the first perpendicular smoke pipe from top to bottom, the second perpendicular smoke pipe is for from bottom to top, the 3rd perpendicular smoke pipe is for from top to bottom, and the rest may be inferred, flue gas dust in cyclic process falls into cleaning door.
4. application number: 200920030490.4, publication number: 201514033U, title: far infrared fire coal gasification environment-protection boiler, applicant: Du Weixin, address: No. 31, Xinhe River street, Weishan County, Shandong Province Office of Science and Technology turns energy-conserving and environment-protective research institute, invention (design) people: Du Weixin, summary: the utility model is far infrared fire coal gasification environment-protection boiler.A kind of far infrared fire coal gasification environment-protection boiler.Lower portion of furnace body has fire grate, and fire grate top is burner hearth, and there are several Ji Yan clean rooms burner hearth top.It is characterized in that: in burner hearth, have dividing plate that burner hearth is divided into vaporizer and combustion chamber, there is overfiren air port Liang Geji cigarette clean room, burner hearth top, tertiary air orifice, around there is super heat-conductive pipe Ji Yan clean room, and indoor have a far infrared combustion purification device.Vaporizer has the passage that makes coal gas lead to combustion chamber, and there is slag notch combustion chamber, and fire grate is rotary type.
The above-mentioned disclosed power economized boiler part that yet comes with some shortcomings, it is direct-fired to be mainly that fuel is taked, thermal conversion efficiency is not high, there is the phenomenon of environmental protection not such as flue gas, dust, combustion chamber gas distribution is scientific and reasonable not, Btu utilization is abundant not enough, and energy-conserving and environment-protective level is not ideal enough, also has the more rising space according to the calorific value efficiency of organic compound combustion.
Summary of the invention
The purpose of this utility model is to provide a kind of can overcome the weak point that existing power economized boiler exists, further improve power economized boiler combustion thermal efficiency, boiler boosting efficiency, greatly reduce purifying and dedusting facility investment, can make full use of the device of the living beings second pyrolysis that heat and rate of gasification are high.
In order to achieve the above object, the technical scheme that the utility model provides is as follows.
The device of living beings second pyrolysis, comprises charging aperture, exhaust outlet, combustion chamber and slag-drip opening, and described charging aperture is connected with combustion chamber, and exhaust outlet is arranged at top, combustion chamber, and slag-drip opening is arranged at below, combustion chamber; Described combustion chamber comprises dry section, reducing zone, oxidation reaction zone, cloth headroom, catalyst bed and surplus heat collection device, dry section, reducing zone and oxidation reaction zone are positioned at below, combustion chamber, dry section is connected with reducing zone, reducing zone is connected with oxidation reaction zone, gas distribution space is positioned at dry section top, catalyst bed is arranged at top, cloth headroom, and surplus heat collection device is arranged at top, combustion chamber.
Described oxidation reaction zone one side is provided with close type air inlet, and oxidation reaction zone communicates with slag-drip opening through pipeline, and pipeline one side is provided with dredges type air inlet.
Described cloth headroom is that at least 10 burners carry out layout to arrange form arranged side by side more, and burner is because of the gas free from dust of use, without tar, so occur without clogging.
Described catalyst bed is provided with at least two-layer catalyst layer, and catalyst layer is netted.Catalyst bed one side is also provided with air supply mouth, in air supply mouth, is provided with filter screen.
The manufacturing process of catalyst layer is to add aluminium oxide to make binding agent iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixed-metal oxides, first add alumina powder to mix metal oxide, metal oxide is 40-60%, binding agent is 40-60%, per kilogram mixed powder adds the dilute sulfuric acid 0.3-0.6 kilogram of weight content 30-60%, be kneaded into dough the same, and then extrusion, reticulate.
Described surplus heat collection device comprises water tank, water pipe and steamdrum, and water tank is arranged at catalyst bed top, and water tank is connected with steamdrum through water pipe, and steamdrum is detachable, and steamdrum is also provided with insulating.
With upper combustion chamber, because using the environmental protection gas of above-mentioned free from dust, smokeless, and burner carries out friction-type burning to boiler endothermic tube, so boiler furnace endothermic system does not have slagging scorification phenomenon, greatly improves the heat-transfer effect of boiler heating surface.
The device of above living beings second pyrolysis has superpower conversion system, starts heat transfer temperature low, and heat transfer rate is fast, and when work, the rate of rise is fast.
The waste heat of the device of above living beings second pyrolysis can all be recovered for comprehensive utilizations such as the heating of boiler.
The device of above living beings second pyrolysis is biomass catalyzing thermal cracking gasification and the utilization of combining of boiler, realizes the lifting of boiler whole efficiency.
The device of above living beings second pyrolysis comprises the various boilers of Verital coal-fired boiler, horizontal coal-fired boiler etc.
Below the effect of the concrete all parts of device of narrating again living beings second pyrolysis is as follows:
(1) device of living beings second pyrolysis.Biomass material enters after biomass cracking gasification boiler, and the chemical process in stove mainly comprises combustion reaction, pyrolysis and reduction reaction.Under high temperature and catalyst synergy, most of living beings issue heat-dissipating decomposition reaction at anoxia condition, thereby produce CO, H 2, CH 4, C nh mdeng fuel gas.Under catalyst action, in high temperature reaction zone, there is secondary response in fugitive constituent and gas phase tar, raw material advance in shift coke, dust onto slag-draining device, part coke by deduster after reflux enter gasification furnace participate in reaction.Remove by condensation, washing, the combustion gas after purification reaches the requirements such as industrial gas, home-use gas, generating.
(2) the cloth headroom, combustion chamber of device.The burner of combustion chamber carries out layout of beam line with the many rows of even gas distributing pipeline form arranged side by side, and burner carries out friction-type burning to boiler endothermic tube, gas can fully be burnt in combustion chamber, thereby produce effect efficient, high heat.
(3) combustion chamber of device.The combustion chamber of device can not produce slagging scorification, reduces the heat-transfer effect of boiler heating surface.
(4) device body.The boiler being connected with biomass gasification device, use biomass combustible gas to burn, reach the environmental requirement of free from dust, smokeless, save artificial and maintenance cost, the air pressure pressurization time of biomass gasification boiler shortens more than one times, and the energy consumption of biomass gasification boiler own is low, fuel saving, than plain cylindrical furnace fuel saving 30%, boiler afterheat can all reclaim for comprehensive utilizations such as the heating of boiler.
Catalytic pyrolysis gasification installation is combined operation with boiler, produce accessory substance type, accessory substance growing amount, accessory substance composition as following table:
Project Detected value National normal value Remarks
Smoke dust discharge concentration 28-39mg/Nm3 120mg/Nm3 ?
Flue dust average emission speed 0.009kg/N 0.096kg/N ?
SO2 concentration of emission 10-14mg/Nm3 550mg/Nm3 ?
SO2 mass rate of emission 0.003kg/N 0.739kg/N ?
Discharged nitrous oxides concentration 30-38mg/Nm3 240mg/Nm3 ?
Nitrogen oxide evenly heat mass rate of emission 0.008kg/N 0.219kg/N ?
Ringelman concentration 0.5 grade 1 grade ?
Compared with prior art, the beneficial effects of the utility model are: have economy, material benefit, with respect to conventional boiler direct economic benefit aspect, the economic benefit of this device is appreciable, chamber temperature is up to 1100-1200 ℃, solve the problem that fiery direct burning produces black smoke, effectively reduced flue dust and pernicious gas SO 2, NO xdischarge, smoke abatement and dust control, makes every environmental protection and energy saving index be far superior to national standard, saves electric energy more than approximately 30%, easy to maintenance, saving maintenance cost.Adopt after new combustion technology, biomass catalyzing thermal cracking gasification is combined utilization with boiler and has greatly improved the economic benefit of boiler.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of the device of the utility model living beings second pyrolysis.
Number in the figure and title are as follows:
1, exhaust outlet, 2, band heat exchange cyclone dust collectors, 3, charging aperture, 4, charging motor, 5, blow vent, 6, dry section, 7, reducing zone, 8, oxidation reaction zone, 9, dredge type air inlet, 10, slag-drip opening, 11, deslagging motor, 12, close type air inlet, 13, cloth headroom, 14, catalyst bed, 15, air supply mouth, 16, water tank, 17, water pipe, 18, steamdrum.
The specific embodiment
For more detailed elaboration the utility model, below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the device of living beings second pyrolysis, comprises charging aperture 3, exhaust outlet 1, combustion chamber and slag-drip opening 10, and described charging aperture 3 is connected with combustion chamber, and exhaust outlet 1 is arranged at top, combustion chamber, and slag-drip opening 10 is arranged at below, combustion chamber; Described combustion chamber comprises dry section 6, reducing zone 7, oxidation reaction zone 8, cloth headroom 13, catalyst bed 14 and surplus heat collection device, dry section 6, reducing zone 7 and oxidation reaction zone 8 are positioned at below, combustion chamber, dry section 6 is connected with reducing zone 7, reducing zone 7 is connected with oxidation reaction zone 8, cloth headroom 13 is positioned at dry section 6 tops, catalyst bed 14 is arranged at 13 tops, cloth headroom, and surplus heat collection device is arranged at top, combustion chamber.
Described oxidation reaction zone 8 one sides are provided with close type air inlet 12, and oxidation reaction zone 8 communicates with slag-drip opening 10 through pipeline, and pipeline one side is provided with dredges type air inlet 9; Close type air inlet 12 arranges the outside with oxidation reaction zone 8 and pipeline, is intensive pipe arrangement form, and thin type air inlet 9 is arranged at the opposite side of pipeline, and quantity is less than the quantity of close type air inlet 12.
Described cloth headroom 13 is carried out layout at least 10 burners to arrange form arranged side by side more.
Described catalyst bed 14 is provided with at least two-layer catalyst layer, and catalyst layer is netted; Catalyst bed 14 1 sides are also provided with air supply mouth 15, in air supply mouth 15, are provided with filter screen.
Described surplus heat collection device comprises water tank 16, water pipe 17 and steamdrum 18, and water tank 16 is arranged at catalyst bed 14 tops, and water tank 16 is connected with steamdrum 18 through water pipe 17, and steamdrum 18 is detachable, and steamdrum 18 is also provided with insulating.
The manufacturing process of catalyst layer is to add aluminium oxide to make binding agent iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixed-metal oxides, first add alumina powder to mix metal oxide, metal oxide is 40-60%, binding agent is 40-60%, per kilogram mixed powder adds the dilute sulfuric acid 0.3-0.6 kilogram of weight content 30-60%, be kneaded into dough the same, and then extrusion, reticulate.
As shown in Figure 1, the device of living beings second pyrolysis of the present utility model, comprises biomass catalyzing pyrolysis gasification device, biomass boiler.Charging aperture 3 drives raw material propeller that raw material is sent to combustion chamber by charging motor 4, and combustion chamber comprises dry section 6, reducing zone 7, oxidation reaction zone 8; Raw material carries out oxidation reaction in oxidation reaction zone 8, produces a large amount of first fuel gas; The lime-ash of raw material is discharged from the slag-drip opening 10 being driven by deslagging motor 11.Just fuel gas is reverse by the top in raw material district, and enters cloth headroom 13 at blow vent 5 and carry out gas distribution.Just fuel gas is evenly by the catalyst bed 14 of removable switching, generation catalytic reaction, and the cracking again of the sufficient gas of all tar and not cracking, has strengthened the calorific value of gas.Heat by gas and air supply mouth 15 mix and play oxidation reaction, radiate a large amount of heats here, by the mode evenly friction burning continuously of heat supply, the endothermic system efficiency of boiler improves rapidly, also increase the speed of gasification, improved the whole efficiency of boiler.By the water tank 16 of even friction burning heating boiler, make water tank 16 produce steam and enter into steamdrum 18 through water pipe 17.Gas after burning is mainly carbon dioxide and water, by the outer row of exhaust outlet 1 of boiler.At boiler exhaust mouth 1, band heat exchange cyclone dust collectors 2 have been installed, its effect is to make heat turn back to the cloth headroom 13 of air inlet, has strengthened the biomass catalyzing cracking reaction of raw material, thereby has improved the reaction of oxidation.Boiler chimney tail gas has reached the qualified requirement of environmental protection after getting rid of by such dedusting.Whole gasification of biomass, first fuel gas carry out uniform friction-type burning boiler, the tail gas of boiler chimney reclaims for biomass gasification reaction through dedusting, the rate of gasification of whole gasification improves, waste heat recovery, there is no the outer row of heat, the endothermic system efficiency of boiler has greatly improved, whole implementation process can realize the evenly fast fully effect of burning gases, and heat utilization efficiency is high, reaches the target of efficient, science, environmental protection.
Application Example 1
The efficiency of combustion of the device of living beings second pyrolysis of the present utility model is significantly promoted, without tar, and gas free from dust after burning, without carbon dioxide etc., Wuming County Pharma Inc. is used after 4 tons of boilers experiments, and fuel cost directly declines 30%; Without supporting any environmental protection equipment, facility, inorganic agent, environmental protection cost declines 100%; Automatic management, saves manpower; Comprehensively reduce costs more than 35%, boiler whole efficiency brings up to 93% from 75%, and boiler chimney is not seen and smoldered, and stack effluents index is significantly less than the standard that country limits! Can be rated as boiler that can not want chimney.

Claims (5)

1. the device of living beings second pyrolysis, comprise charging aperture (3), exhaust outlet (1), combustion chamber and slag-drip opening (10), it is characterized in that: described charging aperture (3) is connected with combustion chamber, exhaust outlet (1) is arranged at top, combustion chamber, and slag-drip opening (10) is arranged at below, combustion chamber; Described combustion chamber comprises dry section (6), reducing zone (7), oxidation reaction zone (8), cloth headroom (13), catalyst bed (14) and surplus heat collection device, dry section (6), reducing zone (7) and oxidation reaction zone (8) are positioned at below, combustion chamber, dry section 6) be connected with reducing zone (7), reducing zone (7) is connected with oxidation reaction zone (8), cloth headroom (13) is positioned at dry section (6) top, catalyst bed (14) is arranged at top, cloth headroom (13), and surplus heat collection device is arranged at top, combustion chamber.
2. the device of living beings second pyrolysis according to claim 1, it is characterized in that: described oxidation reaction zone (8) one sides are provided with close type air inlet (12), oxidation reaction zone (8) communicates with slag-drip opening (10) through pipeline, and pipeline one side is provided with dredges type air inlet (9).
3. the device of living beings second pyrolysis according to claim 1, is characterized in that: described cloth headroom (13) is carried out layout at least 10 burners to arrange form arranged side by side more.
4. the device of living beings second pyrolysis according to claim 1, is characterized in that: described catalyst bed (14) is provided with at least two-layer catalyst layer, and catalyst layer is netted; Catalyst bed (14) one sides are also provided with air supply mouth (15), and air supply mouth is provided with filter screen in (15).
5. the device of living beings second pyrolysis according to claim 2, it is characterized in that: described surplus heat collection device comprises water tank (16), water pipe (17) and steamdrum (18), water tank (16) is arranged at catalyst bed (14) top, water tank (16) is connected with steamdrum (18) through water pipe (17), steamdrum (18) is detachable, and steamdrum (18) is also provided with insulating.
CN201320747562.3U 2013-11-25 2013-11-25 Biomass secondary cracking device Withdrawn - After Issue CN203687019U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103557517A (en) * 2013-11-25 2014-02-05 黄荣胜 Biomass secondary cracking method and device
WO2021203634A1 (en) * 2020-04-09 2021-10-14 苏州金洋环保科技有限公司 High-temperature combustion furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103557517A (en) * 2013-11-25 2014-02-05 黄荣胜 Biomass secondary cracking method and device
CN103557517B (en) * 2013-11-25 2016-01-06 黄荣胜 The method and apparatus of living beings second pyrolysis
WO2021203634A1 (en) * 2020-04-09 2021-10-14 苏州金洋环保科技有限公司 High-temperature combustion furnace

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Granted publication date: 20140702

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