CN104329662A - Horizontal type biomass fluidized bed heat pipe boiler - Google Patents

Horizontal type biomass fluidized bed heat pipe boiler Download PDF

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Publication number
CN104329662A
CN104329662A CN201410586733.8A CN201410586733A CN104329662A CN 104329662 A CN104329662 A CN 104329662A CN 201410586733 A CN201410586733 A CN 201410586733A CN 104329662 A CN104329662 A CN 104329662A
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CN
China
Prior art keywords
heat exchanger
chamber
combustion chamber
fluidized bed
bed
Prior art date
Application number
CN201410586733.8A
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Chinese (zh)
Inventor
王志雄
Original Assignee
惠州市拓丰实业有限公司
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Publication date
Application filed by 惠州市拓丰实业有限公司 filed Critical 惠州市拓丰实业有限公司
Priority to CN201410586733.8A priority Critical patent/CN104329662A/en
Publication of CN104329662A publication Critical patent/CN104329662A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/18Details; Accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/18Details; Accessories
    • F23C10/22Fuel feeders specially adapted for fluidised bed combustion apparatus

Abstract

The invention discloses a horizontal type biomass fluidized bed heat pipe boiler. The horizontal type biomass fluidized bed heat pipe boiler comprises a hearth which is communicated with a heat exchanger through a hearth outlet pipe, wherein the heat exchanger is communicated with a smokestack through a communication pipe; the hearth is of a horizontal structure and comprises a fluidized bed combustion chamber and a burnout chamber which is arranged at the upper part of the right side of the fluidized bed combustion chamber, a boiler container is arranged above the burnout chamber, a threaded smoke tube is arranged above the boiler container, and a water sleeve is arranged above the threaded smoke tube and is communicated with the heat exchanger through the hearth outlet pipe; the fluidized bed combustion chamber comprises a combustion chamber, a fluidized bed is arranged at the bottom of the combustion chamber, a primary air chamber and an ash chamber are arranged below the fluidized bed, the primary air chamber is connected with a primary air blower, a secondary air inlet is formed in the left side of the combustion chamber and is connected with a secondary air blower, and a spiral feeding device is arranged above the secondary air inlet. According to the horizontal type biomass fluidized bed heat pipe boiler, the hearth is reasonable in structural layout, fuels are completely combusted and are high in use ratio, the energy is saved, and the environment is protected.

Description

Horizontal biomass ebullition bed heat pipe boiler

Technical field

[0001] the present invention relates to boiler, specifically refer to a kind of horizontal biomass ebullition bed heat pipe boiler.

Background technology

It is many that biomass molding fuel has volatile matter, can reach 70%-80%(and entirely separate out at 250-350 DEG C), the difficult after-flame of coke, sulfur content is few; Reach (25%-55%) without pretreatment water content, after process, be generally less than 10%; Phosphorus content is few, and the low heat valve 14-16MJ/kg of stalk is about the feature of the half of mark coal (29.3MJ/kg).Existing conventional chain horizontal boiler, owing to being mainly applicable to coal-burning boiler, is not suitable with, even if be configured with Secondary Air biomass molding fuel, but because Secondary Air flue gas does not form great turbulence level, be difficult to STRENGTH ON COKE and burn, not only the thermal efficiency is low, and flue dust is large, discharge is difficult to up to standard.

At present, relate to the boiler technology scheme of Boiling Combustion mode, Chinese patent CN104089282 disclosed " biomass ebullition fired steam boiler " discloses a kind of biomass steam boiler, comprise skeleton frame, be arranged on the burner hearth in skeleton frame, be arranged on the grate on burner hearth and the interior steam boiler body arranged of grate, described burner hearth comprises furnace wall, side furnace wall offers lighting-up tuyere and shoot door, and the port be arranged on furnace wall, top, the side of described burner hearth is provided with feed arrangement and air distribution device, described feed arrangement comprises feed bin, be arranged on one-level spiral feed pipe and deuterostrophies feed pipe that feed bin discharge hole place is ladder setting, one-level spiral feed pipe and deuterostrophies feed pipe all mate and are provided with drive motors, described air distribution device comprises blower fan, wind storehouse in casing shape, to be arranged in the middle part of wind storehouse and to run through the feed pipe of wind storehouse front/rear end, be arranged on the fan connecting tube that the front end face in wind storehouse is communicated with inside, wind storehouse, and be arranged on the aid distributing pipe that wind storehouse rear end face is communicated with inside, wind storehouse, the end part seal of described aid distributing pipe, sidewall offers a series of wind distributing hole in the middle part of burner hearth, the groove mated with wind storehouse is offered in the side of described burner hearth.This biomass ebullition fired steam boiler has sufficient combustion and prevents the advantage of tempering, but its combustion system is single, fuel availability is limited, the vertical structure layout designs of burner hearth and heat transfer, and its structural limitation is only applicable to the heating of low profile thermal pipe boiler, the scope of application is little, and heat utilization rate is low.

Summary of the invention

The object of this invention is to provide a kind of horizontal type structure layout, compound combustion mode burnt, burn completely, the horizontal biomass ebullition bed heat pipe boiler of the high and energy-conserving and environment-protective of fuel availability.

The present invention can be achieved through the following technical solutions:

A kind of horizontal biomass ebullition bed heat pipe boiler, comprise burner hearth, heat exchanger and smokestack, described burner hearth is communicated with heat exchanger by furnace outlet pipe, heat exchanger is communicated with smokestack by connecting pipeline, described burner hearth is that horizontal type structure is arranged, comprise fluidized bed combustion room and burning chamber, the right upper portion of fluidized bed combustion room is provided with burning chamber, the below of burning chamber is provided with holding chamber, the top of burning chamber is provided with flue, the both ends of flue are respectively equipped with left ash bin and right ash bin, threaded flue is provided with above flue, water jacket is provided with above threaded flue, water jacket is communicated with heat exchanger by furnace outlet pipe, described fluidized bed combustion room comprises combustion chamber, ebullated bed, an air compartment and grey room, the bottom of combustion chamber is provided with ebullated bed, the below of ebullated bed is provided with an air compartment and grey room successively, one time air compartment is connected with primary blower by First air import, the left side of combustion chamber is provided with secondary air inlet, secondary air inlet is connected with secondary blower, the top of secondary air inlet is provided with helixes feed equipment.Its burner hearth of the present invention's horizontal biomass ebullition bed heat pipe boiler adopts horizontal type structure to arrange, the hopper of helixes feed equipment is arranged on the upper left side of the charging aperture of fire box, make fuel from top to bottom helically state enter combustion chamber, do not leak out, not tempering, the setting of bottom of combustion chamber ebullated bed and an air compartment, fuel is burnt on ebullated bed, the blast cap cloth wind mode of an air compartment, form close phase grate firing to burn, make fuel combustion abundant, the setting of secondary air inlet below charging gear, due to the disturbance of Secondary Air whirlwind, fuel is made to burn completely on ebullated bed, avoid the incomplete phenomenon of fuel combustion, combustion chamber right upper portion is provided with the setting of burning chamber, make the high-temperature flue gas after burning enter burning chamber to burn, and under the effect of low cigarette speed depositing dust, to burn and clean high-temperature flue gas after depositing dust enters in flue through right ash bin and carries out whirlwind heat exchange, heat exchanger cooling is entered again after the threaded flue that many backhauls are arranged, discharge finally by by smokestack, its exhaust gas temperature is lower than 120 degree, this boiler structure is rationally distributed, exhaust gas temperature is low, fuel combustion is complete, utilization rate is high, boiler overall thermal efficiency is high.

Further, described helixes feed equipment comprises hopper, screw(-type) feeder and feeder channel, described feeder channel is obliquely installed, the top of feeder channel is communicated with hopper by screw(-type) feeder, screw(-type) feeder is placed in feeder channel and carries out screw feeder, the bottom of feeder channel and combustion chamber.The installation site of hopper is higher than charging aperture, and the setting of feeder channel inside spin batcher, make fuel from top to bottom helically state enter combustion chamber, do not leak out, not tempering, effectively prevent boiler tempering phenomenon in use.

Further, the bottom of described burning chamber is provided with the connected entrance with combustion chamber, makes the high-temperature flue gas after combustion chambers burn enter burning chamber completely and carries out burning and depositing dust.

Further, described combustion chamber and grey room are equipped with shoot door, are convenient to timely deashing.

Further, described left ash bin is provided with dividing plate, makes threaded flue form multipaths passage.

Further, described heat exchanger is vertical super heat exchange of heat pipe, comprises heat exchanger tube, header tank and body, and the both sides of body are equipped with header tank, the inner side of header tank is evenly distributed with some heat exchanger tubes from top to bottom, and heat exchanger tube is downward-sloping setting from header tank.

Further, described heat exchanger tube is finned super heat-conductive pipe, and heat transfer efficiency is high, good cooling effect.

Further, between described heat exchanger and smokestack, connecting pipeline is provided with air-introduced machine, and the high-temperature flue gas in burner hearth and heat exchanger is discharged by air-introduced machine in time after smokestack, effectively reduces the stop of dirt and dust, is conducive to improving heat transfer effect.

 

The present invention's horizontal biomass ebullition bed heat pipe boiler, compared with prior art, has following beneficial effect:

First, topology layout is reasonable, burner hearth adopts horizontal type structure to arrange, the hopper of helixes feed equipment is arranged on the charging aperture upper left side of fire box, make fuel from top to bottom helically state enter combustion chamber, do not leak out, not tempering, the setting of bottom of combustion chamber ebullated bed and an air compartment, fuel is burnt on ebullated bed, the blast cap cloth wind mode of an air compartment, form close phase grate firing to burn, make fuel combustion abundant, the setting of secondary air inlet below charging gear, due to the disturbance of Secondary Air whirlwind, fuel is made to burn completely on ebullated bed, avoid the incomplete phenomenon of fuel combustion, combustion chamber right upper portion is provided with the setting of burning chamber, make the high-temperature flue gas after burning enter burning chamber to burn, and under the effect of low cigarette speed depositing dust, to burn and clean high-temperature flue gas after depositing dust enters in flue through right ash bin and carries out whirlwind heat exchange, heat exchanger cooling is entered again after the threaded flue that many backhauls are arranged, its topology layout is reasonable, exhaust gas temperature is low, boiler overall thermal efficiency is high,

The second, burning completely, and adopt compound combustion mode, fuel burns on First air ebullated bed, produces strong turbulent flow, sufficient combustion; High-temperature flue gas is under Secondary Air forms whirlwind condition, and flue gas is long in the burner hearth time of staying, and turbulent flow is strong, and coke burns completely under whirlwind condition;

Three, high, the energy-conserving and environment-protective of fuel availability, because fuel is complete through compound combustion after-combustion, can't see black smoke completely, in high temperature environments, carbon black and tar all burn totally, and its fuel availability is high, and reach the effect of clean combustion and self smoke abatement and dust control, energy-conserving and environment-protective.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation of the present invention's horizontal biomass ebullition bed heat pipe boiler;

Reference numeral is: 1, hopper, 2, screw(-type) feeder, 3, feeder channel, 4, secondary blower, 5, shoot door, 6, connecting pipeline, 7, ebullated bed, 8, air compartment, 9, grey room, 10, primary blower, 11, holding chamber, 12, air-introduced machine, 13, smokestack, 14, heat exchanger tube, 15, header tank, 16, burning chamber, 17, right ash bin, 18, flue, 19, threaded flue, 20, body, 21, water jacket, 22, combustion chamber, 23, left ash bin, 24, dividing plate, 25, furnace outlet pipe.

Detailed description of the invention

In order to make those skilled in the art person understand technical scheme of the present invention better, below in conjunction with embodiment and accompanying drawing, product of the present invention is described in further detail.

As shown in Figure 1, a kind of horizontal biomass ebullition bed heat pipe boiler, comprise burner hearth, heat exchanger and smokestack 13, described burner hearth is communicated with heat exchanger by furnace outlet pipe 25, heat exchanger is communicated with smokestack 13 by connecting pipeline 6, described burner hearth is that horizontal type structure is arranged, comprise fluidized bed combustion room and burning chamber 16, the right upper portion of fluidized bed combustion room is provided with burning chamber 16, the below of burning chamber 16 is provided with holding chamber 11, the top of burning chamber 16 is provided with flue 13, the both ends of flue 13 are respectively equipped with left ash bin 23 and right ash bin 17, threaded flue 19 is provided with above flue 13, water jacket 21 is provided with above threaded flue 19, water jacket 21 is communicated with heat exchanger by furnace outlet pipe 25, described fluidized bed combustion room comprises combustion chamber 22, ebullated bed 7, an air compartment 8 and grey room 9, the bottom of combustion chamber 22 is provided with ebullated bed 7, the below of ebullated bed 7 is provided with an air compartment 8 and grey room 9 successively, one time air compartment 8 is connected with primary blower 10 by First air import, the left side of combustion chamber 22 is provided with secondary air inlet, secondary air inlet is connected with secondary blower 4, the top of secondary air inlet is provided with helixes feed equipment, described heat exchanger is vertical super heat exchange of heat pipe, comprise heat exchanger tube 14, header tank 15 and body 20, the both sides of body 20 are equipped with header tank 15, and the inner side of header tank 15 is evenly distributed with some heat exchanger tubes 14 from top to bottom, and heat exchanger tube 14 is downward-sloping setting from header tank 15.Its burner hearth of the present invention's horizontal biomass ebullition bed heat pipe boiler adopts horizontal type structure to arrange, the hopper 1 of helixes feed equipment is arranged on the upper left side of the charging aperture of fire box 22, make fuel from top to bottom helically state enter combustion chamber, do not leak out, not tempering, the setting of ebullated bed 7 and an air compartment 8 bottom combustion chamber 22, fuel is burnt on ebullated bed 7, the blast cap cloth wind mode of an air compartment 8, form close phase grate firing to burn, make fuel combustion abundant, the setting of secondary air inlet below charging gear, due to the disturbance of Secondary Air whirlwind, fuel is made to burn completely on ebullated bed 7, avoid the incomplete phenomenon of fuel combustion, combustion chamber 22 right upper portion is provided with the setting of burning chamber 16, make the high-temperature flue gas after burning enter burning chamber 16 to burn, and under the effect of low cigarette speed depositing dust, to burn and clean high-temperature flue gas after depositing dust enters in flue through right ash bin 17 and carries out whirlwind heat exchange, heat exchanger cooling is entered again after the threaded flue that many backhauls are arranged, discharge finally by by smokestack, its exhaust gas temperature is lower than 120 degree, this boiler structure is rationally distributed, exhaust gas temperature is low, fuel combustion is complete, utilization rate is high, boiler overall thermal efficiency is high.

As shown in Figure 1, described helixes feed equipment comprises hopper 1, screw(-type) feeder 2 and feeder channel 3, described feeder channel 3 is obliquely installed, the top of feeder channel 3 is communicated with hopper 1 by screw(-type) feeder 2, screw(-type) feeder 2 is placed in feeder channel 3 and carries out screw feeder, the bottom of feeder channel 3 is communicated with combustion chamber 22, the installation site of hopper 1 is higher than charging aperture, and the setting of feeder channel 3 inside spin batcher 2, make fuel from top to bottom helically state enter combustion chamber 22, do not leak out, not tempering, effectively prevent boiler tempering phenomenon in use, the bottom of described burning chamber 16 is provided with the connected entrance be communicated with combustion chamber 22, make the high-temperature flue gas after burning in combustion chamber 22 enter burning chamber 16 completely to carry out burning and depositing dust, described combustion chamber 22 and grey room 9 are equipped with shoot door 5, be convenient to timely deashing, described left ash bin 23 is provided with dividing plate 24, threaded flue 19 is made to form multipaths passage.

As shown in Figure 1, between described heat exchanger and smokestack 13, connecting pipeline 6 is provided with air-introduced machine 12, high-temperature flue gas in burner hearth and heat exchanger is discharged by air-introduced machine 12 in time after smokestack 13, the stop of effective minimizing dirt and dust, be conducive to improving heat transfer effect, described heat exchanger tube 14 is finned super heat-conductive pipe, and heat transfer efficiency is high, good cooling effect.

The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly; But all those skilled in the art are not departing within the scope of technical solution of the present invention, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection domain all still belonging to technical scheme of the present invention.

Claims (8)

1. a horizontal biomass ebullition bed heat pipe boiler, comprise burner hearth, heat exchanger and smokestack (13), described burner hearth is communicated with heat exchanger by furnace outlet pipe (25), heat exchanger is communicated with smokestack (13) by connecting pipeline (6), it is characterized in that: described burner hearth is that horizontal type structure is arranged, comprise fluidized bed combustion room and burning chamber (16), the right upper portion of fluidized bed combustion room is provided with burning chamber (16), the below of burning chamber (16) is provided with holding chamber (11), the top of burning chamber (16) is provided with flue (13), the both ends of flue (13) are respectively equipped with left ash bin (23) and right ash bin (17), flue (13) top is provided with threaded flue (19), threaded flue (19) top is provided with water jacket (21), water jacket (21) is communicated with heat exchanger by furnace outlet pipe (25), described fluidized bed combustion room comprises combustion chamber (22), ebullated bed (7), an air compartment (8) and grey room (9), the bottom of combustion chamber (22) is provided with ebullated bed (7), the below of ebullated bed (7) is provided with an air compartment (8) and grey room (9) successively, one time air compartment (8) is connected with primary blower (10) by First air import, the left side of combustion chamber (22) is provided with secondary air inlet, secondary air inlet is connected with secondary blower (4), the top of secondary air inlet is provided with helixes feed equipment.
2. horizontal biomass ebullition bed heat pipe boiler according to claim 1, it is characterized in that: described helixes feed equipment comprises hopper (1), screw(-type) feeder (2) and feeder channel (3), described feeder channel (3) is obliquely installed, the top of feeder channel (3) is communicated with hopper (1) by screw(-type) feeder (2), screw(-type) feeder (2) is placed in feeder channel (3) and carries out screw feeder, and the bottom of feeder channel (3) is communicated with combustion chamber (22).
3. horizontal biomass ebullition bed heat pipe boiler according to claim 2, is characterized in that: the bottom of described burning chamber (16) is provided with the connected entrance be communicated with combustion chamber (22).
4. horizontal biomass ebullition bed heat pipe boiler according to claim 3, is characterized in that: described combustion chamber (22) and grey room (9) are equipped with shoot door (5).
5. horizontal biomass ebullition bed heat pipe boiler according to claim 4, is characterized in that: described left ash bin (23) is provided with dividing plate (24).
6. horizontal biomass ebullition bed heat pipe boiler according to claim 5, it is characterized in that: described heat exchanger is vertical super heat exchange of heat pipe, comprise heat exchanger tube (14), header tank (15) and body (20), the both sides of body (20) are equipped with header tank (15), the inner side of header tank (15) is evenly distributed with some heat exchanger tubes (14) from top to bottom, heat exchanger tube (14) downward-sloping setting from header tank (15).
7. horizontal biomass ebullition bed heat pipe boiler according to claim 6, is characterized in that: described heat exchanger tube (14) is finned super heat-conductive pipe.
8. horizontal biomass ebullition bed heat pipe boiler according to claim 7, is characterized in that: between described heat exchanger and smokestack (13), connecting pipeline (6) is provided with air-introduced machine (12).
CN201410586733.8A 2014-10-29 2014-10-29 Horizontal type biomass fluidized bed heat pipe boiler CN104329662A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104776427A (en) * 2015-04-03 2015-07-15 武汉江河长能源科技有限公司 Reconstructive biomass micron fluid state combustion equipment based on fuel gas/oil-burning boiler
CN104819460A (en) * 2015-05-08 2015-08-05 江苏万代环境科技有限公司 Horizontal biomass briquette fuel fluidized bed heat pipe boiler
CN106123009A (en) * 2016-07-08 2016-11-16 吴鹏 A kind of boiler drum wind apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534230A (en) * 1994-07-05 1996-07-09 The Babcock & Wilcox Company Segmented heat exchanger flue gas treatment
CN201129709Y (en) * 2007-11-22 2008-10-08 杭州市特种设备检测院 Circular flue jacket hot pipe coal economizer
CN202008229U (en) * 2011-04-11 2011-10-12 孙长富 Horizontal type environmentally-friendly and energy-saving biomass boiler
CN102980177A (en) * 2012-11-29 2013-03-20 湘潭锅炉有限责任公司 Biomass burning fluidized bed boiler
CN203517770U (en) * 2013-11-04 2014-04-02 安徽博瑞特热能设备股份有限公司 Water-cooled grate biomass boiler
CN203771383U (en) * 2014-04-02 2014-08-13 周利国 Novel integrated biomass energy-saving smelting furnace
CN104089282A (en) * 2014-06-20 2014-10-08 河南巨烽生物能源开发有限公司 Biomass fluidized combustion steam boiler
CN204213914U (en) * 2014-10-29 2015-03-18 惠州市拓丰实业有限公司 Horizontal biomass ebullition bed heat pipe boiler

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534230A (en) * 1994-07-05 1996-07-09 The Babcock & Wilcox Company Segmented heat exchanger flue gas treatment
CN201129709Y (en) * 2007-11-22 2008-10-08 杭州市特种设备检测院 Circular flue jacket hot pipe coal economizer
CN202008229U (en) * 2011-04-11 2011-10-12 孙长富 Horizontal type environmentally-friendly and energy-saving biomass boiler
CN102980177A (en) * 2012-11-29 2013-03-20 湘潭锅炉有限责任公司 Biomass burning fluidized bed boiler
CN203517770U (en) * 2013-11-04 2014-04-02 安徽博瑞特热能设备股份有限公司 Water-cooled grate biomass boiler
CN203771383U (en) * 2014-04-02 2014-08-13 周利国 Novel integrated biomass energy-saving smelting furnace
CN104089282A (en) * 2014-06-20 2014-10-08 河南巨烽生物能源开发有限公司 Biomass fluidized combustion steam boiler
CN204213914U (en) * 2014-10-29 2015-03-18 惠州市拓丰实业有限公司 Horizontal biomass ebullition bed heat pipe boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104776427A (en) * 2015-04-03 2015-07-15 武汉江河长能源科技有限公司 Reconstructive biomass micron fluid state combustion equipment based on fuel gas/oil-burning boiler
CN104819460A (en) * 2015-05-08 2015-08-05 江苏万代环境科技有限公司 Horizontal biomass briquette fuel fluidized bed heat pipe boiler
CN106123009A (en) * 2016-07-08 2016-11-16 吴鹏 A kind of boiler drum wind apparatus

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Address after: Two building, 516200 Donghua Avenue, Huiyang District, Guangdong, Huizhou

Applicant after: GUANGDONG TUOFENG INDUSTRIAL CO., LTD.

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Application publication date: 20150204