CN100526719C - Fluidized bed boiler hot material firing mode - Google Patents
Fluidized bed boiler hot material firing mode Download PDFInfo
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- CN100526719C CN100526719C CNB2005100054267A CN200510005426A CN100526719C CN 100526719 C CN100526719 C CN 100526719C CN B2005100054267 A CNB2005100054267 A CN B2005100054267A CN 200510005426 A CN200510005426 A CN 200510005426A CN 100526719 C CN100526719 C CN 100526719C
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- boiler
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- fluidized bed
- heat
- coal supply
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Abstract
The present invention relates to a boiler firing mode, particularly a fluidized bed boiler hot material firing mode. The fluidized bed hot material firing mode is carried out with technology of: popping out almost inert burning out ardor bed material in the operating boiler, and arranging the same into pre-start fluidized bed boiler as firing source, and burning the same at fluidized state after wind feeding, coal feeding, the burning is from point to surface until whole bed is stably burning. The process of the circular fluidized bed boiler hot material firing mode is: preparing material, fetching and sending hot material, wind feeding and coal feeding, fluidizing and burning, wind feeding and coal feeding, extending and burning, burning on whole bed. The invention has advantages that the cost is greatly reduced, the burning process is from point to surface, and the burning is stable.
Description
Technical field
The present invention relates to a kind of ignition of the boiler mode, particularly relate to a kind of coal-fired fluidized bed boiler hot material firing mode.
Background technology
Coal-fired fluidized bed ignition of the boiler mode is a lot, as ignite Micro Fluid igniting of charcoal on the bed, bed on, bed oil gun, air gun down lighted a fire and bed under mode such as pre-burning hot gas ignition.Common characteristic of these sparking mode is the independence igniting of separate unit boiler self, and expense is too high, the facility complexity, and operating process is loaded down with trivial details, and cost is very high.
Summary of the invention
The problem to be solved in the present invention is to overcome the deficiency that existing sparking mode exists, and provides that a kind of expense of lighting a fire is low, facility and coal-fired fluidized bed boiler hot material firing mode simple to operate.
Fluid bed hot material firing mode of the present invention is achieved by following technical proposals.The igniting of the present invention's heat material is that the scorching hot bed material with inertia near after-flame takes out in the boiler that will move, insert in the pretrigger fluidized-bed combustion boiler,, make it to burn in the fluidisation attitude through air distribution, coal supply as Ignition sources, burn to spread over a whole area from one point to expand and carry out, play the smooth combustion of full bed.The flow process of fluidized boiler heat material ignition method of the present invention is: laying bed material → get, heat delivering material → air distribution, coal supply → fluidized bed combustion → air distribution, coal supply → expansion burning → full bed smooth combustion.
The present invention has following beneficial effect compared with prior art: (one) sparking mode cost of the present invention reduces significantly.Not enough existing 75T/H fluidized-bed combustion boiler adopts 10% of oil drop fire mode cost.(2) ignition process is spreaded over a whole area from one point.Though be the igniting of branch bed, it is not that the whole minute bed of putting burns simultaneously, but utilizes hot stockpile to put the Ignition sources of a foundation, constantly to not firing district's expansion up to the smooth combustion of whole branch bed.(3) easy and simple to handle.Utilize specially get, stack pallet gets material, feeding, and the heat material is directly piled up on the bed material in the feeding port burner hearth, carries out bed and goes up igniting, and is convenient directly perceived, is convenient to operation.(4) controllability is strong.Hot material firing mode control is very convenient, and what and the fluidized bed height that utilize coal supply or manually squeeze into the cleaned coal amount of igniting are controlled and expanded combustion speed, bed controls whole preheating time, processing ease by opening to divide.(5) security reliability height.The complex device and the blasting protection facilities that do not have oil drop fire mode, heat material transmission of facility handy and safe, ignition process is remedied convenient, the success rate height.(6) be easy to promote.The fire door that this sparking mode can be utilized coal-burning boiler as give, material taking mouth, material mouthful also can be set specially.
(7) applicability is wide.No matter be that CFBB or bubbling bed boiler all can adopt hot material firing mode of the present invention.
Description of drawings
The present invention has following accompanying drawing:
Fig. 1 stacks the pre-actuated state schematic diagram for the present invention's heat material ignition method fuel;
Fig. 2 is the present invention's heat material ignition method Micro Fluid view;
Fig. 3 expands the combustion view for the present invention's heat material ignition method fluidisation;
Fig. 4 is the full bed of the present invention's heat material ignition method smooth combustion view;
Fig. 5 is the present invention's heat material ignition method ignition district bed temperature change curve schematic diagram.
Wherein: 1, be furnace wall; 2, be air distribution plate; 3, be the coal supply point; 4, be the heat material; 5, be bed material; 6, be the ignition zone; 7, be the combustion zone; 8, for not firing the district; 9, be transition region; 10, be the fluidized bed combustion layer.
The specific embodiment
Below in conjunction with accompanying drawing and example hot material firing mode technical scheme of the present invention is further described.
As Fig. 1～shown in Figure 4.The basis of hot material firing mode of the present invention is on the standby each other method of operation of many boilers, this method is that the scorching hot bed material with inertia near after-flame takes out in the boiler that will move, insert in the pretrigger fluidized-bed combustion boiler, as Ignition sources, make it to burn through air distribution, coal supply in the fluidisation attitude, burn to spread over a whole area from one point to expand and carry out, up to the smooth combustion of full bed.The flow process of fluidized bed boiler hot material firing mode of the present invention is: lay bed material → take, put heat material → air distribution, coal supply → fluidized bed combustion → air distribution, a coal supply → expansion burning → smooth combustion entirely.Described laying bed material is the cold slag that similar boiler is discharged, and cold slag particle degree is 2～8mm, and bed material thickness is 330mm; Heat taking material is that condition earlier need stop deslagging to moving boiler before getting material from operation Boiler door or material mouthful, when the air compartment blast rises to normal 105～110%, emulsion zone temperature at 800～950 ℃, and just desirable material; During heat taking material truck aimed at that material taking mouth is got material or mechanical device is got material, the heat taking material amount is about 1 ton, inserts in the pretrigger boiler furnace on the bed material, is the heap shape as far as possible, to keep the material temperature.
Being set to of described material taking mouth: get and expect fire door or ad hoc material mouth easily, during ad hoc material mouth, the boiler material taking mouth of preposition coal supply is at rear side, and the rearmounted material taking mouth of coal burning boiler of giving is in the front side; Heat material carbon content should be less than 25%.
The branch bed air quantity of described air distribution is for transferring to critical fluidized state, and for plane, the ignition zone area is 1～3m to the heat material by heap shape wriggling
2, temperature is not less than 500 ℃; Described first time, coal supply, wind turning aperture were 30～50%; Coal supply, wind turning aperture are 50～100% for the second time.
When described first time, the coal supply calorific value was lower than 4000 kilocalories/kg, can manually squeeze into the cleaned coal that ignites at the fire door place; When the condition that increases for the second time coal supply and wind turning thereof reaches 700 ℃ for the ignition zone temperature; This air distribution coal supply process ignition zone temperature is not less than 500 ℃.
The present invention's heat material ignition method and step:
1, the cold slag of getting the discharge of operation boiler is as the bed material that starts boiler, and cold slag particle degree is 2～8mm, and its particle size fraction ratio is: 2～3mm accounts for 25%; 3～6mm accounts for 50%; 6～8mm accounts for 25%; Bed material thickness is 330mm;
2, earlier the operation boiler is stopped deslagging before taking heat material, when the air compartment blast rise to normal 108%, when the emulsion zone temperature remains on 900 ℃, heat taking material;
3, truck is aimed at material taking mouth, open this mouthful fire door, the heat material is inserted in the truck automatically under the effect that fluidisation moves, and truck moves to the feeding port of pretrigger fluidized-bed combustion boiler, and the heat material is inserted, and determines repeatedly for several times that according to the size of truck volume heat taking material is 1 ton altogether.The heat material of inserting in the pretrigger fluid bed boiler furnace keeps piling shape as far as possible, does not spread out, to keep heat material temperature.The heat material fills, and can start.
4, start blower fan, minute bed air quantity of putting transfers to critical fluidized state, and other bed is in stationary state.The Ignition sources that hot material is set up in beginning air distribution process, becomes the plane source region of drawing by heap shape wriggling, presents intensive fireworks display phenomenon when reaching critical fluidized state, at this moment ignition zone area 1.5m
2Between, temperature is not less than 500 ℃, at this moment opens coal supply equipment immediately, and coal amount aperture is controlled at 35%; The coal supply calorific value is lower than 4000 kilocalories/kg, manually squeezes into the cleaned coal that ignites at the fire door place, when the ignition zone temperature reaches 700 ℃, increases air output and coal-supplying amount, and coal-supplying amount and wind turning amount aperture thereof are 80%, improve the fluidisation bed surface.
The ignition zone is in combustion process, because fluidization is expanded to not firing the district gradually, and the ignition zone area constantly increases, this process is the exothermic process of ignition zone on the one hand; Suitable on the other hand coal supply and air distribution have guaranteed the supply of ignition zone normal combustion and heat, and this process is the endothermic process of ignition zone.Two processes reach dynamic equilibrium within a certain period of time.
Put minute bed all after the burning, should require carry out preheating according to rules, again according to preheat requirements control ignition temperature and time to body of heater.
When reach requirement preheating time, open other one by one and divide bed and coal feeder, up to the smooth combustion of full bed.
Claims (4)
1, a kind of fluidized bed boiler hot material firing mode is characterized in that: described heat material igniting flow process is: laying bed material → get, heat delivering material → air distribution, coal supply → fluidized bed combustion → air distribution, coal supply → expansion burning → full bed smooth combustion; Described laying bed material is the cold slag that similar boiler is discharged, and cold slag particle degree is 2～8mm, and bed material thickness is 330; Heat taking material is a heat taking material from the operation boiler, and condition is moved boiler before the material and need be stopped deslagging for getting, and that the air compartment blast rises to is normal 105～110%, the emulsion zone temperature is in the time of 800～950 ℃; During heat taking material truck is aimed at material taking mouth, 1 ton of heat taking material is inserted and is the heap shape in the burner hearth of pretrigger boiler on the bed material; The full bed air quantity of described air distribution is for transferring to critical fluidized state, and for plane, the ignition zone area is 1～3m to the heat material by heap shape wriggling
2, temperature is not less than 500 ℃; Coal supply, air distribution aperture before the described fluidized bed combustion are 30～50%, when the coal supply calorific value is lower than 4000 kilocalories/kg, can manually squeeze into the cleaned coal that ignites at the fire door place; Coal supply behind the fluidized bed combustion, air distribution aperture are 50～100%, and the condition of coal supply and air distribution thereof reaches 700 ℃ for the ignition zone temperature.
2, fluidized bed boiler hot material firing mode according to claim 1 is characterized in that: described heat taking material is that mechanical system is got material.
3, fluidized bed boiler hot material firing mode according to claim 1 is characterized in that: describedly get, being set to of feeding port: adopt to get and expect fire door easily.
4, fluidized bed boiler hot material firing mode according to claim 1 is characterized in that: describedly get, feeding port is provided with ad hoc material mouth; Should be during ad hoc material mouth: the boiler material taking mouth of preposition coal supply is at rear side, and the material taking mouth of the boiler of rearmounted coal supply is in the front side, and the heat taking material temperature is 800～950 ℃, and heat material carbon content should be not more than 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100054267A CN100526719C (en) | 2005-01-04 | 2005-01-04 | Fluidized bed boiler hot material firing mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100054267A CN100526719C (en) | 2005-01-04 | 2005-01-04 | Fluidized bed boiler hot material firing mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632380A CN1632380A (en) | 2005-06-29 |
| CN100526719C true CN100526719C (en) | 2009-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100054267A Expired - Fee Related CN100526719C (en) | 2005-01-04 | 2005-01-04 | Fluidized bed boiler hot material firing mode |
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| CN (1) | CN100526719C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5880783B2 (en) | 2013-04-24 | 2016-03-09 | 株式会社Ihi | Fluidized bed system and fluidized bed furnace operating method |
| CN103292319B (en) * | 2013-05-17 | 2015-06-17 | 福建远翔化工有限公司 | Ignition method of boiling furnace |
| CN103499093B (en) * | 2013-09-26 | 2015-12-23 | 吉木萨尔县光源发电有限责任公司 | CFBB starting ignition method |
| CN107975791A (en) * | 2017-11-21 | 2018-05-01 | 安徽双轮酒业有限责任公司 | A kind of method of the fluidisation igniting of recirculating fluidized bed |
| CN108506928A (en) * | 2018-04-16 | 2018-09-07 | 中国计量大学 | A kind of non-oil ignition system and method for circulating fluidized bed combustion coal boiler |
-
2005
- 2005-01-04 CN CNB2005100054267A patent/CN100526719C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1632380A (en) | 2005-06-29 |
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Owner name: NINGXIA TAIRUI PHARMACEUTICAL CO., LTD. Free format text: FORMER OWNER: WANG TIANWEI Effective date: 20110429 |
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Free format text: CORRECT: ADDRESS; FROM: 810200 NO. 2, YANGLONG ROAD, XIHAI TOWN, HAIBEI PREFECTURE, QINGHAI PROVINCE TO: 750101 WANGYUAN DEVELOPMENT ZONE, YONGNING COUNTY, YINCHUAN CITY, NINGXIA HUI AUTONOMOUS REGION |
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Effective date of registration: 20150915 Address after: 750101 the Ningxia Hui Autonomous Region Yongning County, Yinchuan City telescope Development Zone, Ningxia Terry pharmaceutical, Limited by Share Ltd (Finance Department) Patentee after: Wang Tianwei Address before: 750101 the Ningxia Hui Autonomous Region Yongning County Development Zone of Yinchuan City Patentee before: Ningxia Tairui Pharmaceutical Co., Ltd. |
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