CN102313282A - High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws - Google Patents
High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws Download PDFInfo
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- CN102313282A CN102313282A CN201110060603A CN201110060603A CN102313282A CN 102313282 A CN102313282 A CN 102313282A CN 201110060603 A CN201110060603 A CN 201110060603A CN 201110060603 A CN201110060603 A CN 201110060603A CN 102313282 A CN102313282 A CN 102313282A
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Abstract
The invention provides a high-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws, which can combust hard straws and soft straws simultaneously and returns materials smoothly. The high-temperature high-pressure recirculating fluidized bed boiler comprises a drum, a hearth, a convection evaporating heating surface, an overheater, a coal economizer, an air preheater and a smoke outlet, wherein the drum is arranged above the hearth, and the convection evaporating heating surface, the overheater, the coal economizer, the air preheater and the smoke outlet are sequentially arranged in the smoke flowing direction of the hearth. The high-temperature high-pressure recirculating fluidized bed boiler is characterized in that a dual-helical feeding machine is externally connected to the lateral side of the bottom of the hearth and leads to a combustion chamber inside the hearth, a deslagging pipe is arranged at the lower part of the combustion chamber, an under-bed ignition device is externally connected to the downside of the combustion chamber, a vertically-arranged circular steam cooling high-temperature cyclone separator is arranged in the middle of a channel through which the hearth is connected with the convection evaporating heating surface, and a returning channel is communicated to the bottom of the vertically-arranged circular steam cold high-temperature cyclone separator, and is communicated with the combustion chamber of the hearth.
Description
Technical field
The present invention relates to the mechanical mechanism technical field of boiler, be specially the HTHP CFBB of biological substance for combustion stalk.
Background technology
Stalk (cotton stalk, tree branches, cornstalk, straw etc.) is the discarded object of agricultural production, lets alone to burn in the field and has not only wasted valuable resource, goes back pollutant atmosphere.Stalk is a kind of biomass fuel, is regenerative resource, makes full use of the crop straw burning generating, has energy savings, antipollution social benefit, also has good economic benefits.The CFBB ubiquity returning charge of existing domestic biological substance for combustion stalk is smooth, undercapacity and can not take into account using of hard stalk and soft stalk simultaneously.
Summary of the invention
To the problems referred to above, the invention provides the HTHP CFBB of biological substance for combustion stalk, it is smooth and easy that it can use hard stalk and soft stalk and returning charge simultaneously.
The HTHP CFBB of biological substance for combustion stalk; Its technical scheme is such: it comprises drum, burner hearth, convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening; The top of said burner hearth is equipped with said drum; The flue gas flow direction direction of said burner hearth is equipped with said convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening successively; It is characterized in that: the bottom sidepiece of said burner hearth is circumscribed with double-spiral feeder; Said double-spiral feeder leads to the inner combustion chamber of said burner hearth, and said combustion chamber lower disposed has residue outlet, and below, said combustion chamber is circumscribed with the ignition under bed device; The interchannel that said burner hearth connects said evaporating heating surface is equipped with vertically to the cold high temperature cyclone separator of arranging of circular vapour; The bottom of the cold high temperature cyclone separator of said circular vapour is communicated with the returning charge passage, the combustion chamber of the said burner hearth of said returning charge channel connection, and the saturated vapor of said drum goes out pipe connects the cold high temperature cyclone separator of said circular vapour through tube connector upper pipeline import; The lower tube way outlet of the cold high temperature cyclone separator of said circular vapour connects the import of said superheater through pipeline, and steam (vapor) outlet collection case is led in the outlet of said superheater.
It is further characterized in that: said superheater comprises low temperature superheater, medium temperature overheater, high temperature superheater; Said medium temperature overheater, low temperature superheater are arranged in the flue gas flow direction direction of said burner hearth in order, and said high temperature superheater is arranged in the internal cavities of said returning charge passage;
The lower tube way outlet of the cold high temperature cyclone separator of said circular vapour connects the import of said low temperature superheater through pipeline; The one-level direct-contact desuperheater connects said low temperature superheater and medium temperature overheater; Secondary direct-contact desuperheater, tube connector connect said medium temperature overheater, high temperature superheater, and the outlet of said high temperature superheater leads to said steam (vapor) outlet collection case;
The boiler feed water import connects said economizer; The outlet of said economizer connects the water inlet of said drum through pipeline; The delivery port of said drum connects the water inlet of said convection current evaporating heating surface, burner hearth membrane wall respectively through down-comer, said convection current evaporating heating surface, burner hearth membrane wall delivery port connect said drum through water inlet pipe;
The corresponding pipeline in the below of said convection current evaporating heating surface is the V-structure inwall, and the minimum point of said V-structure inwall is connected with cement output tank in the stove, and the below tube wall of said air preheater has ash discharging hole, and cement output tank leads to said ash discharging hole in the said stove;
Said combustion chamber arranged beneath has a wind apparatus up, and the top of said combustion chamber is furnished with overfire air device.
After adopting structure of the present invention; The hard stalk is or/and soft stalk is delivered to the inner combustion chamber of burner hearth through double-spiral feeder; Produce high-temperature flue gas after the fuel combustion heat is passed to the membrane wall of burner hearth, the cold high temperature cyclone separator of round vapour, convection current evaporating heating surface etc. successively, wherein produce high-temperature flue gas after the fuel combustion and produce separation at the cold high temperature cyclone separator of round vapour, more tiny particle gets into the afterbody convection heating surface with flue gas; Bigger particle is separated to get off; Send into the combustion chamber district of burner hearth through the returning charge passage, form circulation, so that it can use hard stalk and soft stalk and returning charge simultaneously is smooth and easy.
Description of drawings
Fig. 1 is a front view structural representation of the present invention.
The specific embodiment
See Fig. 1; It comprises drum 1, burner hearth 2, convection current evaporating heating surface 3, superheater, economizer 4, air preheater 10, exhaust opening 21; The top of burner hearth 2 is equipped with drum 1; The flue gas flow direction direction of burner hearth 2 is equipped with convection current evaporating heating surface 3, superheater, economizer 4, air preheater 10, exhaust opening 21 successively; Superheater comprises low temperature superheater 5, medium temperature overheater 6, high temperature superheater 7, and medium temperature overheater 6, low temperature superheater 5 are arranged in the flue gas flow direction direction of burner hearth 2 in order, and high temperature superheater 7 is arranged in the internal cavities of returning charge passage 12;
The bottom sidepiece of burner hearth 2 is circumscribed with double-spiral feeder 13; Double-spiral feeder 13 leads to the combustion chamber 22 of burner hearth 2 inside; Combustion chamber 22 lower disposed have residue outlet 15; 22 belows, combustion chamber are circumscribed with ignition under bed device 14, and the interchannel that burner hearth 2 connects evaporating heating surface 3 is equipped with vertical to the cold high temperature cyclone separator of arranging 11 of circular vapour, and the bottom of the cold high temperature cyclone separator 11 of circular vapour is communicated with returning charge passage 12; Returning charge passage 12 is communicated with the combustion chamber 22 of burner hearth 2; The saturated vapor of drum 1 goes out the upper pipeline import 24 of pipe through the cold high temperature cyclone separator 11 of the tube connector 23 circular vapour of connection, and the lower tube way outlet 25 of the cold high temperature cyclone separator 11 of circular vapour is through the import of pipeline 26 connection low temperature superheaters 5, and one-level direct-contact desuperheater 8 connects low temperature superheater 5 and medium temperature overheater 6; Secondary direct-contact desuperheater 9, tube connector 27 connect medium temperature overheater 6, high temperature superheater 7, and the outlet of high temperature superheater 7 leads to steam (vapor) outlet collection case 16; The boiler feedwater import connects economizer 4; The outlet of economizer 4 connects the water inlet of drum 1 through pipeline 28; The delivery port of drum 1 connects the water inlet of convection current evaporating heating surface 3, burner hearth membrane wall 29 respectively through down-comer 20, convection current evaporating heating surface 3, burner hearth membrane wall 29 delivery port connect drums 1 through water inlet pipe 30; The corresponding pipeline in the below of convection current evaporating heating surface 3 is a V-structure inwall 31, and the minimum point of V-structure inwall 31 is connected with cement output tank 17 in the stove, and the below tube wall of air preheater 10 has ash discharging hole 32, and cement output tank 17 leads to ash discharging hole 32 in the stove; Combustion chamber 22 arranged beneath have a wind apparatus 18 up, and the top of combustion chamber 22 is furnished with overfire air device 19.
Its operation principle is following:
Boiler feedwater is got into by economizer 4; Receive to get into drum 1 after the flue gas heating; Stove water in the drum 1 gets into burner hearth membrane wall 29 and convection current evaporating heating surface 3 respectively through down-comer 20; The stove water become steam water interface after by flue gas heating and get into drum 1 in burner hearth membrane wall 29 and the convection current evaporating heating surface 3, drum 1 in, by water separator steam water interface are divided into saturated vapor and saturated stove water, the stove water entering down-comer 20 that continues to reflux; Saturated vapor is introduced the cold high temperature cyclone separator 11 of round vapour by tube connector 23; Become superheated steam in cold high temperature cyclone separator 11 outlets of round vapour through the saturated vapor that heats and introduce low temperature superheaters 5 by pipeline 26; Get into the superheated steam that one-level direct-contact desuperheater 8, medium temperature overheater 6, secondary direct-contact desuperheater 9, high temperature superheater 7 reach the boiler nominal parameter then successively and introduce steam (vapor) outlet collection case 16 output boilers, get into steam turbine work done generating by tube connector.
Send into the combustion chamber 21 of burner hearth 2 bottoms by double-spiral feeder 13 through broken stalk fuel; Produce high-temperature flue gas after the fuel combustion heat is passed to the cold high temperature cyclone separator of burner hearth membrane wall 29, round vapour 11, convection current evaporating heating surface 3, medium temperature overheater 6, low temperature superheater 5, economizer 4, air preheater 10 successively; Cooling back flue gas is discharged boiler, is discharged by chimney through the flue gas that meets national discharge index after the processing such as dedusting, desulfurization.
The slag of fuel after 21 burnings of the combustion chamber of burner hearth 2 discharged boiler by residue outlet 15.
Produce high-temperature flue gas after the fuel combustion and produce separation at the cold high temperature cyclone separator 11 of round vapour; More tiny particle gets into the afterbody convection heating surface with flue gas; Bigger particle is separated to get off, and sends into the combustion chamber 21 of burner hearth 2 by returning charge passage 12, forms circulation; In this process, red-hot particle is with the heating surface of heat transferred high temperature superheater 7 and burner hearth membrane wall 29.
Claims (6)
1. the HTHP CFBB of biological substance for combustion stalk; It comprises drum, burner hearth, convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening; The top of said burner hearth is equipped with said drum; The flue gas flow direction direction of said burner hearth is equipped with said convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening successively; It is characterized in that: the bottom sidepiece of said burner hearth is circumscribed with double-spiral feeder; Said double-spiral feeder leads to the inner combustion chamber of said burner hearth, and said combustion chamber lower disposed has residue outlet, and below, said combustion chamber is circumscribed with the ignition under bed device; The interchannel that said burner hearth connects said evaporating heating surface is equipped with vertically to the cold high temperature cyclone separator of arranging of circular vapour; The bottom of the cold high temperature cyclone separator of said circular vapour is communicated with the returning charge passage, the combustion chamber of the said burner hearth of said returning charge channel connection, and the saturated vapor of said drum goes out pipe connects the cold high temperature cyclone separator of said circular vapour through tube connector upper pipeline import; The lower tube way outlet of the cold high temperature cyclone separator of said circular vapour connects the import of said superheater through pipeline, and steam (vapor) outlet collection case is led in the outlet of said superheater.
2. the HTHP CFBB of biological substance for combustion stalk according to claim 1; It is characterized in that: said superheater comprises low temperature superheater, medium temperature overheater, high temperature superheater; Said medium temperature overheater, low temperature superheater are arranged in the flue gas flow direction direction of said burner hearth in order, and said high temperature superheater is arranged in the internal cavities of said returning charge passage.
3. the HTHP CFBB of biological substance for combustion stalk according to claim 2; It is characterized in that: the lower tube way outlet of the cold high temperature cyclone separator of said circular vapour connects the import of said low temperature superheater through pipeline; The one-level direct-contact desuperheater connects said low temperature superheater and medium temperature overheater; Secondary direct-contact desuperheater, tube connector connect said medium temperature overheater, high temperature superheater, and the outlet of said high temperature superheater leads to said steam (vapor) outlet collection case.
4. the HTHP CFBB of biological substance for combustion stalk according to claim 3; It is characterized in that: the boiler feed water import connects said economizer; The outlet of said economizer connects the water inlet of said drum through pipeline; The delivery port of said drum connects the water inlet of said convection current evaporating heating surface, burner hearth membrane wall respectively through down-comer, said convection current evaporating heating surface, burner hearth membrane wall delivery port connect said drum through water inlet pipe.
5. the HTHP CFBB of biological substance for combustion stalk according to claim 4; It is characterized in that: the corresponding pipeline in the below of said convection current evaporating heating surface is the V-structure inwall; The minimum point of said V-structure inwall is connected with cement output tank in the stove; The below tube wall of said air preheater has ash discharging hole, and cement output tank leads to said ash discharging hole in the said stove.
6. the HTHP CFBB of biological substance for combustion stalk according to claim 5 is characterized in that: said combustion chamber arranged beneath has a wind apparatus up, and the top of said combustion chamber is furnished with overfire air device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060603 CN102313282B (en) | 2011-03-14 | 2011-03-14 | High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110060603 CN102313282B (en) | 2011-03-14 | 2011-03-14 | High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws |
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| CN102313282A true CN102313282A (en) | 2012-01-11 |
| CN102313282B CN102313282B (en) | 2013-04-24 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721046A (en) * | 2012-07-06 | 2012-10-10 | 无锡华光锅炉股份有限公司 | Circulating fluidized bed boiler for combustion papermaking waste residue and sludge |
| CN102748742A (en) * | 2012-07-31 | 2012-10-24 | 太原锅炉集团有限公司 | Vertical single-drum refuse-incinerating waste heat boiler |
| CN103453521A (en) * | 2013-09-05 | 2013-12-18 | 无锡华光锅炉股份有限公司 | Circulating fluidized bed boiler for combusting palm residues |
| CN107559813A (en) * | 2017-10-18 | 2018-01-09 | 上海工业锅炉无锡有限公司 | A kind of super-pressure reheat vapor cycle fluidized-bed combustion boiler of burning-used biologic mass fuel |
| CN110220182A (en) * | 2019-07-10 | 2019-09-10 | 哈尔滨红光锅炉总厂有限责任公司 | A kind of biomass direct-fired energy-saving circulating fluidized bed superhigh-pressure high-temp reheated steam boiler |
| CN111623334A (en) * | 2020-06-24 | 2020-09-04 | 北京天清源工程技术有限公司 | Corner tube type biomass fuel boiler |
| CN111720810A (en) * | 2020-06-24 | 2020-09-29 | 南通万达锅炉有限公司 | Fluidized bed incinerator grading cooling module |
| CN112325279A (en) * | 2020-10-10 | 2021-02-05 | 大唐长山热电厂 | Reforming equipment for biomass combustion of circulating fluidized bed coal-fired boiler |
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| US20050120924A1 (en) * | 2002-05-22 | 2005-06-09 | Ravi Chandran | Pulse gasification and hot gas cleanup apparatus and process |
| CN201225613Y (en) * | 2008-06-23 | 2009-04-22 | 中国华电工程(集团)有限公司 | Circulating fluid bed boiler of stalk biomass for combustion |
| CN201973708U (en) * | 2011-03-14 | 2011-09-14 | 无锡华光锅炉股份有限公司 | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050120924A1 (en) * | 2002-05-22 | 2005-06-09 | Ravi Chandran | Pulse gasification and hot gas cleanup apparatus and process |
| CN201225613Y (en) * | 2008-06-23 | 2009-04-22 | 中国华电工程(集团)有限公司 | Circulating fluid bed boiler of stalk biomass for combustion |
| CN201973708U (en) * | 2011-03-14 | 2011-09-14 | 无锡华光锅炉股份有限公司 | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721046A (en) * | 2012-07-06 | 2012-10-10 | 无锡华光锅炉股份有限公司 | Circulating fluidized bed boiler for combustion papermaking waste residue and sludge |
| CN102721046B (en) * | 2012-07-06 | 2015-01-14 | 无锡华光锅炉股份有限公司 | Circulating fluidized bed boiler for combustion papermaking waste residue and sludge |
| CN102748742A (en) * | 2012-07-31 | 2012-10-24 | 太原锅炉集团有限公司 | Vertical single-drum refuse-incinerating waste heat boiler |
| CN103453521A (en) * | 2013-09-05 | 2013-12-18 | 无锡华光锅炉股份有限公司 | Circulating fluidized bed boiler for combusting palm residues |
| CN103453521B (en) * | 2013-09-05 | 2017-01-04 | 无锡华光锅炉股份有限公司 | A kind of CFBB of the Petiolus Trachycarpi slag that burns |
| CN107559813A (en) * | 2017-10-18 | 2018-01-09 | 上海工业锅炉无锡有限公司 | A kind of super-pressure reheat vapor cycle fluidized-bed combustion boiler of burning-used biologic mass fuel |
| CN110220182A (en) * | 2019-07-10 | 2019-09-10 | 哈尔滨红光锅炉总厂有限责任公司 | A kind of biomass direct-fired energy-saving circulating fluidized bed superhigh-pressure high-temp reheated steam boiler |
| CN110220182B (en) * | 2019-07-10 | 2024-04-19 | 哈尔滨红光锅炉总厂有限责任公司 | Biomass direct-fired energy-saving circulating fluidized bed high-temperature ultrahigh-pressure reheat steam boiler |
| CN111623334A (en) * | 2020-06-24 | 2020-09-04 | 北京天清源工程技术有限公司 | Corner tube type biomass fuel boiler |
| CN111720810A (en) * | 2020-06-24 | 2020-09-29 | 南通万达锅炉有限公司 | Fluidized bed incinerator grading cooling module |
| CN111720810B (en) * | 2020-06-24 | 2021-05-11 | 南通万达锅炉有限公司 | Fluidized bed incinerator grading cooling module |
| CN112325279A (en) * | 2020-10-10 | 2021-02-05 | 大唐长山热电厂 | Reforming equipment for biomass combustion of circulating fluidized bed coal-fired boiler |
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| CN102313282B (en) | 2013-04-24 |
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Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |
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