CN201973708U - High-temperature high-pressure circulating fluidized bed boiler burning biomass straws - Google Patents
High-temperature high-pressure circulating fluidized bed boiler burning biomass straws Download PDFInfo
- Publication number
- CN201973708U CN201973708U CN2011200655471U CN201120065547U CN201973708U CN 201973708 U CN201973708 U CN 201973708U CN 2011200655471 U CN2011200655471 U CN 2011200655471U CN 201120065547 U CN201120065547 U CN 201120065547U CN 201973708 U CN201973708 U CN 201973708U
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- China
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- superheater
- burner hearth
- combustion chamber
- high temperature
- heating surface
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Abstract
The utility model provides a high-temperature high-pressure circulating fluidized bed boiler burning biomass straws, which can burn hard straws and soft straws simultaneously and is smooth in return materials, the high-temperature high-pressure circulating fluidized bed boiler burning biomass straws comprises a boiler barrel, a hearth, a convection evaporation heating surface, a superheater, a coal economizer, an air preheater and a smoke outlet, wherein the boiler barrel is arranged above the hearth, the convection evaporation heating surface, the superheater, the coal economizer, the air preheater and the smoke outlet are sequentially arranged in the smoke flowing direction of the hearth; and the high-temperature high-pressure circulating fluidized bed boiler burning biomass straws is characterized in that a double-spiral feeder is externally connected at the side part of the bottom side of the hearth and led to a combustion chamber in the hearth, a slag discharge pipe is arranged at the lower part of the combustion chamber, an bed under-igniter is externally connected below the combustion chamber, a round steam-cooling high-temperature cyclone separator arranged vertically is arranged in the channel where the hearth is connected with a evaporation heating surface, a material return channel is communicated at the bottom of the round steam-cooling high-temperature cyclone separator and is communicated with the combustion chamber of the hearth.
Description
Technical field
The utility model relates to the mechanical mechanism technical field of boiler, is specially a kind of 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
At the problems referred to above, the utility model provides a kind of HTHP CFBB of biological substance for combustion stalk, and it is smooth and easy that it can use hard stalk and soft stalk and returning charge simultaneously.
A kind of HTHP CFBB of biological substance for combustion stalk, its technical scheme is such: it comprises drum, burner hearth, the convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening, the top of described burner hearth is equipped with described drum, the flue gas flow direction direction of described burner hearth is equipped with described convection current evaporating heating surface successively, superheater, economizer, air preheater, exhaust opening, it is characterized in that: the bottom sidepiece of described burner hearth is circumscribed with double-spiral feeder, described double-spiral feeder leads to the combustion chamber of described burner hearth inside, described combustion chamber lower disposed has residue outlet, below, described combustion chamber is circumscribed with the ignition under bed device, the interchannel that described burner hearth connects described 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 described circular vapour is communicated with the returning charge passage, the combustion chamber of the described burner hearth of described returning charge channel connection, the saturated vapor of described drum goes out pipe connects the cold high temperature cyclone separator of described circular vapour by tube connector upper pipeline import, the lower tube way outlet of the cold high temperature cyclone separator of described circular vapour connects the import of described superheater by pipeline, and steam (vapor) outlet collection case is led in the outlet of described superheater.
It is further characterized in that: described superheater comprises low temperature superheater, medium temperature overheater, high temperature superheater, described medium temperature overheater, low temperature superheater are arranged in the flue gas flow direction direction of described burner hearth in turn, and described high temperature superheater is arranged in the internal cavities of described returning charge passage;
The lower tube way outlet of the cold high temperature cyclone separator of described circular vapour connects the import of described low temperature superheater by pipeline, the one-level direct-contact desuperheater connects described low temperature superheater and medium temperature overheater, secondary direct-contact desuperheater, tube connector connect described medium temperature overheater, high temperature superheater, and the outlet of described high temperature superheater leads to described steam (vapor) outlet collection case;
The boiler feed water import connects described economizer, the outlet of described economizer connects the water inlet of described drum by pipeline, the delivery port of described drum connects the water inlet of described convection current evaporating heating surface, burner hearth membrane wall respectively by down-comer, described convection current evaporating heating surface, burner hearth membrane wall delivery port connect described drum by water inlet pipe;
The corresponding pipeline in the below of described convection current evaporating heating surface is the V-structure inwall, and the minimum point of described V-structure inwall is connected with cement output tank in the stove, and the below tube wall of described air preheater has ash discharging hole, and cement output tank leads to described ash discharging hole in the described stove;
Described combustion chamber arranged beneath has a wind apparatus up, and the top of described combustion chamber is furnished with overfire air device.
After adopting structure of the present utility model, the hard stalk is or/and soft stalk is delivered to the combustion chamber of burner hearth inside by double-spiral feeder, produce the membrane wall that high-temperature flue gas is passed to heat burner hearth successively after the fuel combustion, the cold high temperature cyclone separator of round vapour, convection current evaporating heating surface etc., 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 enters the afterbody convection heating surface with flue gas, bigger particle is separated to get off, send into the combustion chamber district of burner hearth by the returning charge passage, it forms circulation, so can use hard stalk and soft stalk simultaneously, and returning charge is smooth and easy.
Description of drawings
Fig. 1 is a front view structural representation of the present utility model.
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, medium temperature overheater 6, low temperature superheater 5 are arranged in the flue gas flow direction direction of burner hearth 2 in turn, 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, the interchannel that burner hearth 2 connects evaporating heating surface 3 is equipped with vertically to the cold high temperature cyclone separator of arranging 11 of circular vapour, 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 pipe connects the cold high temperature cyclone separator 11 of circular vapour by tube connector 23 upper pipeline import 24, the lower tube way outlet 25 of the cold high temperature cyclone separator 11 of circular vapour connects the import of low temperature superheater 5 by pipeline 26, one-level direct-contact desuperheater 8 connects low temperature superheater 5 and medium temperature overheater 6, secondary direct-contact desuperheater 9, tube connector 27 connects medium temperature overheater 6, high temperature superheater 7, the outlet of high temperature superheater 7 lead 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 by 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 by down-comer 20, convection current evaporating heating surface 3, burner hearth membrane wall 29 delivery port connect drums 1 by 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 as follows:
Boiler feedwater is entered by economizer 4, be subjected to enter drum 1 after the flue gas heating, stove water in the drum 1 enters burner hearth membrane wall 29 and convection current evaporating heating surface 3 respectively through down-comer 20, become steam water interface after stove water is heated by flue gas in burner hearth membrane wall 29 and the convection current evaporating heating surface 3 and enter drum 1, by water separator steam water interface is divided into saturated vapor and saturated stove water in drum 1, stove water continues to reflux and enters down-comer 20; 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, enter 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, enter 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 the stalk fuel of fragmentation, produce high-temperature flue gas after the fuel combustion heat is passed to burner hearth membrane wall 29, the cold high temperature cyclone separator 11 of round vapour, 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 enters the afterbody convection heating surface with flue gas, bigger particle is separated to get off, send into the combustion chamber 21 of burner hearth 2 by returning charge passage 12, form 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 a biological substance for combustion stalk, it comprises drum, burner hearth, the convection current evaporating heating surface, superheater, economizer, air preheater, exhaust opening, the top of described burner hearth is equipped with described drum, the flue gas flow direction direction of described burner hearth is equipped with described convection current evaporating heating surface successively, superheater, economizer, air preheater, exhaust opening, it is characterized in that: the bottom sidepiece of described burner hearth is circumscribed with double-spiral feeder, described double-spiral feeder leads to the combustion chamber of described burner hearth inside, described combustion chamber lower disposed has residue outlet, below, described combustion chamber is circumscribed with the ignition under bed device, the interchannel that described burner hearth connects described 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 described circular vapour is communicated with the returning charge passage, the combustion chamber of the described burner hearth of described returning charge channel connection, the saturated vapor of described drum goes out pipe connects the cold high temperature cyclone separator of described circular vapour by tube connector upper pipeline import, the lower tube way outlet of the cold high temperature cyclone separator of described circular vapour connects the import of described superheater by pipeline, and steam (vapor) outlet collection case is led in the outlet of described superheater.
2. the HTHP CFBB of a kind of biological substance for combustion stalk according to claim 1, it is characterized in that: described superheater comprises low temperature superheater, medium temperature overheater, high temperature superheater, described medium temperature overheater, low temperature superheater are arranged in the flue gas flow direction direction of described burner hearth in turn, and described high temperature superheater is arranged in the internal cavities of described returning charge passage.
3. the HTHP CFBB of a kind 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 described circular vapour connects the import of described low temperature superheater by pipeline, the one-level direct-contact desuperheater connects described low temperature superheater and medium temperature overheater, secondary direct-contact desuperheater, tube connector connect described medium temperature overheater, high temperature superheater, and the outlet of described high temperature superheater leads to described steam (vapor) outlet collection case.
4. the HTHP CFBB of a kind of biological substance for combustion stalk according to claim 3, it is characterized in that: the boiler feed water import connects described economizer, the outlet of described economizer connects the water inlet of described drum by pipeline, the delivery port of described drum connects the water inlet of described convection current evaporating heating surface, burner hearth membrane wall respectively by down-comer, described convection current evaporating heating surface, burner hearth membrane wall delivery port connect described drum by water inlet pipe.
5. the HTHP CFBB of a kind of biological substance for combustion stalk according to claim 4, it is characterized in that: the corresponding pipeline in the below of described convection current evaporating heating surface is the V-structure inwall, the minimum point of described V-structure inwall is connected with cement output tank in the stove, the below tube wall of described air preheater has ash discharging hole, and cement output tank leads to described ash discharging hole in the described stove.
6. the HTHP CFBB of a kind of biological substance for combustion stalk according to claim 5 is characterized in that: described combustion chamber arranged beneath has a wind apparatus up, and the top of described combustion chamber is furnished with overfire air device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200655471U CN201973708U (en) | 2011-03-14 | 2011-03-14 | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200655471U CN201973708U (en) | 2011-03-14 | 2011-03-14 | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws |
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| Publication Number | Publication Date |
|---|---|
| CN201973708U true CN201973708U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200655471U Expired - Lifetime CN201973708U (en) | 2011-03-14 | 2011-03-14 | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313282A (en) * | 2011-03-14 | 2012-01-11 | 无锡华光锅炉股份有限公司 | High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws |
| CN102748752A (en) * | 2012-07-06 | 2012-10-24 | 中南大学 | Combustion furnace for reciprocating fluidization of small biomass briquette |
| CN106640223A (en) * | 2016-11-29 | 2017-05-10 | 武汉都市环保工程技术股份有限公司 | Low heating value coal gas electricity generation method |
| CN107763593A (en) * | 2017-11-21 | 2018-03-06 | 贵州新能源开发投资股份有限公司 | A kind of high sodium coal two-stage medium temperature separation recirculating fluidized bed superheated steam boiler of pure combustion |
| CN110914594A (en) * | 2017-07-27 | 2020-03-24 | 住友重工福威能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
-
2011
- 2011-03-14 CN CN2011200655471U patent/CN201973708U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313282A (en) * | 2011-03-14 | 2012-01-11 | 无锡华光锅炉股份有限公司 | High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws |
| CN102313282B (en) * | 2011-03-14 | 2013-04-24 | 无锡华光锅炉股份有限公司 | High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws |
| CN102748752A (en) * | 2012-07-06 | 2012-10-24 | 中南大学 | Combustion furnace for reciprocating fluidization of small biomass briquette |
| CN106640223A (en) * | 2016-11-29 | 2017-05-10 | 武汉都市环保工程技术股份有限公司 | Low heating value coal gas electricity generation method |
| CN110914594A (en) * | 2017-07-27 | 2020-03-24 | 住友重工福威能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
| US11079108B2 (en) | 2017-07-27 | 2021-08-03 | Sumitomo SHI FW Energia Oy | Fluidized bed boiler plant and a method of preheating combustion gas in a fluidized bed boiler plant |
| CN110914594B (en) * | 2017-07-27 | 2021-09-10 | 住友重机械福惠能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
| CN107763593A (en) * | 2017-11-21 | 2018-03-06 | 贵州新能源开发投资股份有限公司 | A kind of high sodium coal two-stage medium temperature separation recirculating fluidized bed superheated steam boiler of pure combustion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20130424 |
|
| RGAV | Abandon patent right to avoid regrant |