CN102128447A - Steam heating method of bed materials of fluidized bed boiler - Google Patents
Steam heating method of bed materials of fluidized bed boiler Download PDFInfo
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- CN102128447A CN102128447A CN 201110100247 CN201110100247A CN102128447A CN 102128447 A CN102128447 A CN 102128447A CN 201110100247 CN201110100247 CN 201110100247 CN 201110100247 A CN201110100247 A CN 201110100247A CN 102128447 A CN102128447 A CN 102128447A
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Abstract
The invention discloses a steam heating method of bed materials of a fluidized bed boiler. Bed materials 1, a hearth 2, a supercritical boiler 3, supercritical boiler high-temperature steam 4, a supercritical boiler heat primary air throttle 5, a supercritical boiler heat secondary air throttle 6, an air cap 7 and a primary air chamber 8 are provided in the method. In the initial stage of igniting, the 220-DEG C supercritical boiler heat primary air 5 and supercritical boiler heat secondary air 6 which are in the normal running state are introduced to heat the hearth 2 of a CFB (Circulating Fluidized Bed) boiler to be ignited for about 3 hours. When the bed materials 1 are heated to about 180-200 DEG C and the discharged smoke temperature of the boiler is up to 50 DEG C, the about 500-DEG C high-temperature steam 4 from the supercritical boiler is introduced to the primary air chamber 8, and the bed materials are uniformly heated by the high-temperature steam through the air cap 7. Thus, bituminous coal with high heat value can be ignited when the bed materials are heated to about 350-400 DEG C. In the steam heating method of bed materials of the fluidized bed boiler, the bed materials can be heated to about 350-400 DEG C by adopting the supercritical boiler high-temperature steam, thereby being equivalent to finding a method for greatly saving igniting fuel oil for boilers.
Description
Technical field
The present invention relates to CFBB, especially relate to a kind of Steam Heating method of fluidized-bed combustion boiler bed material.
Background technology
China uses the maximum country of CFBB (CFB boiler) in power plant in the world, the big or small recirculating fluidized bed station boiler that has moved has more than 3000, wherein the above large-size circulating fluidized bed station boiler of 410t/h has more than 140, and the above large-size circulating fluidized bed station boiler of 1025t/h has more than 20 (also having more than 50 is building).
The core of CFBB cold start igniting is that the bed material with several cubes or tens cubes is heated to about 350-450 ℃ (is the burning-point of coal, brown coal only need 350 ℃), a bed material temperature reach coal burning-point and stable after at this moment coal is thrown into the bed material and is gone up coal and promptly lighted; The high-temperature flue gas that produces at the ignition process intermediate fuel oil adds the hott bed material, and oil gun flame does not contact with coal.As seen, as long as being heated to the bed material, the generation high-temperature gas just can successfully realize fluidized-bed combustion boiler cold start igniting about 350-450 ℃.Found the method for saving the ignition of the boiler fuel oil significantly.
Summary of the invention
The object of the invention is to provide a kind of Steam Heating method of fluidized-bed combustion boiler bed material.
For achieving the above object, the present invention takes following technical proposals:
1, the igniting initial stage introduces 220 ℃ of normal operation and faces the stove heat primary air and face the hot secondary wind of stove the CFB boiler of needs igniting was carried out radiator about 3 hours
2, be heated to about 180-200 ℃ when the bed material, introduce about 500 ℃ high-temperature steam to the time air compartment that faces stove when exhaust gas temperature reaches 50 ℃, high-temperature steam heats the bed material by blast cap.
Just can light the high bituminous coal of calorific value when 3, the bed material is heated to the 350-400 ℃ of left and right sides.
Coal is lighted the back and is dropped into this boiler primary air fan air feed and turn down gradually simultaneously and face the stove hot blast, turn down and face the stove high-temperature steam gradually, improves gradually to close about bed material temperature to 500 ℃ and faces the stove high-temperature steam and face the stove hot blast.
4, facing stove high-temperature steam 4 takes from and faces stove superheated steam, reheated steam, about 500 ℃ of temperature.
The Steam Heating method of fluidized-bed combustion boiler bed material of the present invention adopts high-temperature steam that the bed material is heated to about 350-400 ℃, has equaled to find the method for sending out of saving the ignition of the boiler fuel oil.
Description of drawings
Fig. 1 is this existing fluidized-bed combustion boiler oil drop stove thorax diagrammatic sketch.
The Steam Heating burner hearth diagrammatic sketch of the fluidized-bed combustion boiler bed material of the present invention that Fig. 2 is.
The specific embodiment
As shown in Figure 2, the Steam Heating method of a kind of fluidized-bed combustion boiler bed material of the present invention, it comprises bed material 1, burner hearth 2 faces stove 3, faces stove high-temperature steam 4, faces stove heat primary air 5, faces the hot secondary wind 6 of stove, 7, air compartments 8 of blast cap.
The bed material 1 that the fluidized-bed combustion boiler igniting initial stage is introduced the CFB burner hearth 2 of 6 pairs of needs igniting of normal (220 ℃) heat primary air that faces stove that moves 5 and (200 ℃) the hot secondary wind that faces stove heated 3 hours.
When bed material 1 is heated to about 180-200 ℃, when reaching 50 ℃, introduces exhaust gas temperature 4 to the air compartments 8 of about 500 ℃ high-temperature steam that face stove, and face stove high-temperature steam 4 and evenly heat by 7 pairs of bed material 1 of blast cap.
When being heated to the 350-400 ℃ of left and right sides, just can light in bed material 1 the high bituminous coal of calorific value.
Coal is lighted the back and is dropped into this boiler primary air fan air feed and turn down gradually simultaneously and face stove heat primary air 5 and face the hot secondary wind 6 of stove, turn down and face stove high-temperature steam 4 gradually, closes during temperature to the 500 ℃ left and right sides of improving bed material 1 gradually to face stove high-temperature steam 4 and face stove heat primary air 5 and face the hot secondary wind 6 of stove.
Facing stove high-temperature steam 4 takes from and faces stove superheated steam, reheated steam, about 500 ℃ of temperature.
The various embodiments described above can not depart from the scope of the present invention down in addition some variations, thus more than explanation comprise and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit claim of the present invention.
Claims (6)
1. the Steam Heating method of a fluidized-bed combustion boiler bed material, as shown in Figure 2, the Steam Heating method of a kind of fluidized-bed combustion boiler bed material of the present invention, it comprises bed material 1, burner hearth 2 faces stove 3, faces stove high-temperature steam 4, faces stove heat primary air 5, face the hot secondary wind 6 of stove, 7, air compartments 8 of blast cap.
2. the bed material 1 that the fluidized-bed combustion boiler igniting initial stage according to claim 1 is introduced the CFB burner hearth 2 of 6 pairs of needs igniting of normal (220 ℃) heat primary air that faces stove that moves 5 and (200 ℃) the hot secondary wind that faces stove heated 3 hours.
3. the bed material 1 of working as according to claim 1 is heated to about 180-200 ℃, introduces 4 to the air compartments 8 of about 500 ℃ high-temperature steam that face stove when exhaust gas temperature reaches 50 ℃, and high-temperature steam evenly heats by 7 pairs of bed material 1 of blast cap.When being heated to the 350-400 ℃ of left and right sides, just can light in bed material 1 the high bituminous coal of calorific value.
4. the granularity of bed material 1 according to claim 1 is selected below the diameter 4mm, adopts sunken bed material level (450nm) to reduce primary air flow during heating, shortens bed material heat time heating time; The heat primary air amount of facing stove 3 is controlled at and keeps bed material 1 to be in the Micro Fluid state.
5. coal according to claim 1 is lighted the back and is dropped into this boiler primary air fan air feed and turn down gradually simultaneously and face stove heat primary air 5 and face the hot secondary wind 6 of stove, turn down and face stove high-temperature steam 4 gradually, closes during temperature to the 500 ℃ left and right sides of improving bed material 1 gradually to face stove high-temperature steam 4 and face stove heat primary air 5 and face the hot secondary wind 6 of stove.
6. the stove high-temperature steam 4 that faces according to claim 1 is taken from superheated steam, the reheated steam of facing stove, about 500 ℃ of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100247A CN102128447B (en) | 2011-04-21 | 2011-04-21 | Steam heating method of bed materials of fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100247A CN102128447B (en) | 2011-04-21 | 2011-04-21 | Steam heating method of bed materials of fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
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| CN102128447A true CN102128447A (en) | 2011-07-20 |
| CN102128447B CN102128447B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110100247A Expired - Fee Related CN102128447B (en) | 2011-04-21 | 2011-04-21 | Steam heating method of bed materials of fluidized bed boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604119A (en) * | 2013-11-28 | 2014-02-26 | 山东科技大学 | Circulating fluidized bed overgrate air distribution method and special-purpose boiler |
| CN104566353A (en) * | 2014-12-20 | 2015-04-29 | 无锡东马锅炉有限公司 | Primary air blowing device for circulating fluidized bed boiler |
| CN105276575A (en) * | 2014-06-12 | 2016-01-27 | 国网山西省电力公司电力科学研究院 | Boiler heating system |
| CN106958811A (en) * | 2017-05-16 | 2017-07-18 | 中国华能集团清洁能源技术研究院有限公司 | A kind of method and system using this stove of adjacent stove Hot-blast Heating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173013A (en) * | 1985-01-24 | 1986-08-04 | Hitachi Zosen Corp | Fluidized bed boiler of circulation type |
| JP2000257809A (en) * | 1999-03-10 | 2000-09-22 | Babcock Hitachi Kk | Pressurized fluidized bed boiler and starting method of same |
| CN1566749A (en) * | 2003-06-11 | 2005-01-19 | 上海锅炉厂有限公司 | Method of fluidizing wind at high pressure using steam to replace air |
| CN101709874A (en) * | 2009-12-11 | 2010-05-19 | 云南大唐国际红河发电有限责任公司 | Starting method of 300000KW subcritical unit without electric pump |
| WO2010071422A2 (en) * | 2008-12-15 | 2010-06-24 | Essent Energie Productie B.V. | Gasifying solid fuels in a circulating fluidized bed |
-
2011
- 2011-04-21 CN CN201110100247A patent/CN102128447B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173013A (en) * | 1985-01-24 | 1986-08-04 | Hitachi Zosen Corp | Fluidized bed boiler of circulation type |
| JP2000257809A (en) * | 1999-03-10 | 2000-09-22 | Babcock Hitachi Kk | Pressurized fluidized bed boiler and starting method of same |
| CN1566749A (en) * | 2003-06-11 | 2005-01-19 | 上海锅炉厂有限公司 | Method of fluidizing wind at high pressure using steam to replace air |
| WO2010071422A2 (en) * | 2008-12-15 | 2010-06-24 | Essent Energie Productie B.V. | Gasifying solid fuels in a circulating fluidized bed |
| CN101709874A (en) * | 2009-12-11 | 2010-05-19 | 云南大唐国际红河发电有限责任公司 | Starting method of 300000KW subcritical unit without electric pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604119A (en) * | 2013-11-28 | 2014-02-26 | 山东科技大学 | Circulating fluidized bed overgrate air distribution method and special-purpose boiler |
| CN103604119B (en) * | 2013-11-28 | 2016-06-08 | 山东科技大学 | Circulating fluidized bed secondary air joins wind method and boiler dedicated |
| CN105276575A (en) * | 2014-06-12 | 2016-01-27 | 国网山西省电力公司电力科学研究院 | Boiler heating system |
| CN104566353A (en) * | 2014-12-20 | 2015-04-29 | 无锡东马锅炉有限公司 | Primary air blowing device for circulating fluidized bed boiler |
| CN106958811A (en) * | 2017-05-16 | 2017-07-18 | 中国华能集团清洁能源技术研究院有限公司 | A kind of method and system using this stove of adjacent stove Hot-blast Heating |
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| Publication number | Publication date |
|---|---|
| CN102128447B (en) | 2012-10-10 |
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Address after: Jin Haiyi Chui Songshan Road No. 298 450051 Henan city of Zhengzhou province No. 2 unit 2 Building No. 3 Applicant after: Zhang Quansheng Address before: 100055, Beijing, Guang'an, No. 168 outside the main street, Lang International Building, block A, 5 Applicant before: Zhang Quansheng |
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Granted publication date: 20121010 Termination date: 20130421 |