CN102128447B - 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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- CN102128447B CN102128447B CN201110100247A CN201110100247A CN102128447B CN 102128447 B CN102128447 B CN 102128447B CN 201110100247 A CN201110100247 A CN 201110100247A CN 201110100247 A CN201110100247 A CN 201110100247A CN 102128447 B CN102128447 B CN 102128447B
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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 large-size circulating fluidized bed station boiler has more than 140 more than the 410t/h, and large-size circulating fluidized bed station boiler has more than 20 (also having more than 50 is building) more than the 1025t/h.
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 goes up coal and promptly lighted; The high-temperature flue gas that produces at the ignition process intermediate fuel oil adds hot bed materials, and oil gun flame does not contact with coal.Thus it is clear that, just can successfully realize fluidized-bed combustion boiler cold start igniting about 350-450 ℃ as long as the generation high-temperature gas is heated to the bed material.Found the method for practicing thrift 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 realizing above-mentioned purpose, the present invention takes following technical proposals:
1,220 ℃ of adjacent stove heat primary airs of igniting initial stage introducing normal operation and the hot secondary wind of adjacent stove were carried out radiator about 3 hours to the CFB boiler of needs igniting
2, be heated to 180-200 ℃ when the bed material, introduce about 500 ℃ high-temperature steam to the time air compartment that adjacent stove comes when exhaust gas temperature reaches 50 ℃, high-temperature steam heats the bed material through blast cap.
Just can light the high bituminous coal of calorific value when 3, the bed material is heated to 350-400 ℃.
Coal is lighted the back and is dropped into this boiler primary air fan air feed and turn down adjacent stove hot blast simultaneously gradually, turn down adjacent stove high-temperature steam gradually, improves gradually about bed material temperature to 500 ℃ and closes adjacent stove high-temperature steam and adjacent stove hot blast.
4, adjacent stove high-temperature steam 4 is taken from adjacent 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 350-400 ℃, has equaled to find the method for sending out of practicing thrift 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, adjacent stove 3, adjacent stove high-temperature steam 4, adjacent stove heat primary air 5, the hot secondary wind 6 of adjacent stove, 7, air compartments 8 of blast cap.
Fluidized-bed combustion boiler igniting initial stage 6 pairs of (200 ℃) hot secondary wind introducing (220 ℃) heat primary air 5 and the adjacent stove of the adjacent stove of normal operation need bed material 1 heating 3 hours of the CFB burner hearths 2 of igniting.
When bed material 1 is heated to 180-200 ℃, when reaching 50 ℃, introduces exhaust gas temperature 4 to air compartments 8 of about 500 ℃ high-temperature steam that adjacent stove comes, and adjacent stove high-temperature steam 4 evenly heats through 7 pairs of bed material 1 of blast cap.
When being heated to 350-400 ℃, 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 the hot secondary wind of adjacent stove heat primary air 5 and adjacent stove 6 simultaneously gradually, turn down adjacent stove high-temperature steam 4 gradually, closes adjacent stove high-temperature steam 4 and adjacent stove heat primary air 5 and the hot secondary wind 6 of adjacent stove during temperature to the 500 ℃ left and right sides of improving bed material 1 gradually.
Adjacent stove high-temperature steam 4 is taken from adjacent stove superheated steam, reheated steam, about 500 ℃ of temperature.
Above-mentioned each embodiment 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 regarded as exemplary, but not in order to limit claim of the present invention.
Claims (1)
1. the Steam Heating method of a fluidized-bed combustion boiler bed material, it comprises bed material (1), burner hearth (2); Adjacent stove (3), adjacent stove high-temperature steam (4), adjacent stove heat primary air (5); The adjacent hot secondary wind of stove (6), blast cap (7), an air compartment (8); It is characterized in that 200 ℃ of hot secondary wind (6) that the igniting initial stage is introduced 220 ℃ of heat primary airs (5) and the adjacent stove of the adjacent stove of normal operation heated 3 hours the bed material (1) of the CFB burner hearth (2) of needs igniting, when bed material (1) is heated to 180-200 ℃; When reaching 50 ℃, introduces exhaust gas temperature about 500 ℃ next high-temperature steam (4) of adjacent stove to an air compartment (8); To evenly heating of bed material (1), just can be lighted when bed material (1) was heated to 350-400 ℃, after coal is lighted by the high bituminous coal of calorific value through blast cap (7) for high-temperature steam; Drop into this boiler primary air fan air feed; Simultaneously turn down adjacent stove heat primary air (5) and the hot secondary wind of adjacent stove (6) gradually, turn down adjacent stove high-temperature steam (4) gradually, improve gradually and close adjacent stove high-temperature steam (4) and adjacent stove heat primary air (5) and the hot secondary wind of adjacent stove (6) when bed is expected temperature to the 500 ℃ left and right sides of (1).
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 |
|---|---|
| CN102128447A CN102128447A (en) | 2011-07-20 |
| CN102128447B true CN102128447B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN102128447B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (3)
| 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 |
| NL2002330C2 (en) * | 2008-12-15 | 2010-06-16 | Essent En Produktie B V | GASIFICATION OF SOLID FUELS IN A CIRCULATING SPIRAL BED. |
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2011
- 2011-04-21 CN CN201110100247A patent/CN102128447B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| JP昭61-173013A 1986.08.04 |
| JP特开2000-257809A 2000.09.22 |
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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 |