CN104390218A - Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler - Google Patents
Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler Download PDFInfo
- Publication number
- CN104390218A CN104390218A CN201410757692.4A CN201410757692A CN104390218A CN 104390218 A CN104390218 A CN 104390218A CN 201410757692 A CN201410757692 A CN 201410757692A CN 104390218 A CN104390218 A CN 104390218A
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- China
- Prior art keywords
- wind
- distribution plate
- wall
- cinder notch
- isobaric
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a constant pressure wind chamber applied to a CFB (circulating fluid bed) waste incineration boiler. The constant pressure wind chamber comprises a constant pressure box body enclosed by four water-cooled walls, namely a wind distribution plate, a front wall, a rear wall and a bottom wall, wherein the end faces of the constant pressure box body are sealed by a left sidewall and a right sidewall to form the constant pressure wind chamber; a slag falling opening is formed in the middle of the wind distribution plate; a wind inlet is formed in the rear wall; headers are arranged at the two ends of the wind distribution plate, the front wall and the rear wall; the bottom wall is downwards inclined from front to back; a part of the water-cooled wall of the wind distribution plate extends from the upper header, and is downwards bent to be finally connected with the lower header on the same side to form the slag falling opening; a plurality of wind caps are arranged on the wind distribution plate; the wind cap on the edge of the slag falling opening is a 7-shaped guide wind cap, and the other wind caps are mushroom-shaped wind caps; the wind direction of the guide wind cap is the tangential direction of a circle of which the center is the central point of the slag falling opening.
Description
Technical field
The present invention relates to a kind of isobaric air compartment for CFB garbage burning boiler.
Background technology
Along with the development of Chinese society economy and the raising of living standards of the people, domestic waste gets more and more.The safe handling of domestic waste, has become an outstanding problem in modern social development.From the garbage disposal development course of developed country, garbage incineration technology has had harmless, decrement and the features such as resource.
Developed country due to its living standard high, rubbish quality is good, and incombustible thing is few, and moisture is few, is easy to distinguish, therefore American-European refuse-burning plant many employings fire grate combustion system.And China's most municipal refuse calorific value is low, it is good not that refuse classification work is done, a large amount of inorganic matter even stone has also been sent to burner hearth, affect boiler efficiency, therefore under rubbish high-moisture, low-calorie extreme condition, have in burning process supplementary high-quality fuel such as oil or natural gas, namely adopt multifuel combustion mode, operating cost is very high in this case; And the fuel of circulating fluid-bed combustion system multifuel combustion is in this case coal, coal is with low cost in China, so operating cost is low.Through facts have proved for many years, CFB garbage incineration technology mature and reliable, pollutant discharge amount is low, initial cost and maintenance cost low, with grate furnace ratio, there is obvious superiority.Through operation test, do not mix the pure burning rubbish of coal under the waste incineration CFB boiler of the West China energy can accomplish extreme case, greatly reduce operating cost, the advantage place of this West China energy garbage incineration technology just.
But for high-moisture low heat value domestic waste, the design of numerous domestic boiler hearth of circulating fluidized bed does not all reach ideal effect, and the aspects such as combustion stability, ignition temperature equal control are all comparatively short of.Existing CFB garbage burning boiler using coal as raw material, what it was less fall cinder notch, and fluidisation can obtain requirement.And general house refuse volume is comparatively large, in burner hearth, be difficult to abundant fluidisation, and after burning, residue is comparatively large, cannot smooth and easy fall slag.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of isobaric air compartment being applicable to CFB garbage burning boiler, add the aperture area of cinder notch, improve the fluidisation degree of burner hearth.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of isobaric air compartment being applicable to CFB garbage burning boiler, comprises the isobaric casing surrounded by air distribution plate, front wall, Hou Qiang, end wall four pieces of water-cooling walls; Isobaric casing end face becomes isobaric air compartment by left and right sidewall enclosed shape; Be provided with cinder notch in the middle of described air distribution plate; Rear wall is provided with air inlet; It is characterized in that: air distribution plate, front wall, Hou Qiang two ends are provided with header; After high before wall of the described end, low dip is arranged; The part water-cooling wall of air distribution plate extends out from the header of top and bends downwards, and header that is final and below homonymy is connected to form cinder notch; Described air distribution plate is provided with some blast caps, and the blast cap being positioned at cinder notch edge is 7 shape guiding blast caps, and all the other are mushroom-shaped blast cap; The wind direction of described guiding blast cap is the tangential direction of circle that cinder notch central point is the center of circle of falling.Utilize water-cooling wall to be bent to form cinder notch downwards, broken the restriction of horizontal curved water making pipe, make cinder notch bore can according to Demand Design.And water-cooling wall is connected with upper lower header, keeps water cooling labyrinth, avoid its tube wall temperature too high, cause overtemperature failure phenomenon.And the position of the cinder notch that falls and number are relative to all better design of traditional mode that bends.The heavy caliber be evenly arranged by the cinder notch surrounding that falls large kinetic energy guiding blast cap, its wind direction circle of contact is arranged, is formed centrally eddy flow, provides enough fall greatly cinder notch blind area fluidisation power and deslagging guiding forces in the cinder notch that falls, and fluidisation and the deslagging of guarantee cloth wind blind area are unobstructed; All the other wind distributing faces adopt small-bore mushroom blast cap, and mushroom-shaped blast cap has can flexible arrangement, ensure the uniform advantage of fluidisation.
Improve as one, described in the cinder notch that falls be rectangle, the vertical water-cooling wall inner surface of the cinder notch surrounding that falls is fixed with housing; Described housing section is round rectangle; Housing is welded by four blocks of L shape flaps, and its weld seam is positioned on housing limit.Unobstructed, the cinder notch that falls of can guaranteeing to slag tap there will not be bight to be subject to thermal stress by drawing crack, thus cause leak out, fall the operation problems such as slag.
Preferred as one, described isobaric cabinet wall is laid with refractory material.Avoid tubing directly by flue gas or air erosion.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is the structural representation of guiding blast cap.
Fig. 4 is the structural representation of mushroom-shaped blast cap.
Fig. 5 is the structural representation of housing.
Mark in figure: 8 housings, 9 air distribution plates, 18 fall cinder notch, 19 guiding blast caps, 20 mushroom-shaped blast caps, 21 weld seams, 26 charging 33 front walls, wall, 35 end walls, 36 headers after 34.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figures 1 to 5, the present invention includes the isobaric casing surrounded by air distribution plate 9, front wall 33, rear wall 34, end wall 35 4 pieces of water-cooling walls; Described isobaric cabinet wall is laid with refractory material.Isobaric casing end face becomes isobaric air compartment by left and right sidewall enclosed shape; Be provided with cinder notch in the middle of described air distribution plate 9; Rear wall 34 is provided with air inlet; Air distribution plate 9, front wall 33, rear wall 34 two ends are provided with header 36; After high before wall of the described end 35, low dip is arranged; The part water-cooling wall of air distribution plate 9 extends out from the header 36 of top and bends downwards, and header 36 that is final and below homonymy is connected to form cinder notch 18; Described air distribution plate 9 is provided with some blast caps, and the blast cap being positioned at cinder notch 18 edge is 7 shape guiding blast caps 19, and all the other are mushroom-shaped blast cap 20; The wind direction of described guiding blast cap 19 is the tangential direction of circle that cinder notch central point is the center of circle of falling.This diameter of a circle should not be greater than to fall the width of cinder notch 18 in principle.Described fall cinder notch 18 be rectangle, vertical water-cooling wall inner surface is fixed with housing 8 to fall cinder notch 18 surrounding; Described housing 8 cross section is round rectangle; Housing 8 is welded by four blocks of L shape flaps, and its weld seam 21 is positioned on housing limit, preferably in the center on limit.
Traditional cinder notch generation type that falls is that the water cooling tube on air distribution plate 9 water-cooling wall is carried out being bent to form of horizontal direction.Its defect is to do too much by the cinder notch that falls.And adopt the mode bent by water-cooling wall to form the cinder notch that falls downwards, just not limited.And the fin panel casing after bending is communicated with header, maintains Water-cooling circulating, avoid producing high temperature corrosion.When work, mushroom-shaped blast cap 20 is to four sides even distributing wind; And the wind direction of the blast cap 19 that leads is arranged along the tangential direction of the circle being the center of circle with cinder notch 18 central point that falls, make the wind of guiding blast cap 19 cloth slag can not only be blown into cinder notch 18, formed and slag tap continuously.And can fall in cinder notch 18 to being formed centrally eddy flow, strengthen fluid effect in stove.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. be applicable to an isobaric air compartment for CFB garbage burning boiler, comprise the isobaric casing surrounded by air distribution plate, front wall, Hou Qiang, end wall four pieces of water-cooling walls; Isobaric casing end face becomes isobaric air compartment by left and right sidewall enclosed shape; Be provided with cinder notch in the middle of described air distribution plate; Rear wall is provided with air inlet; It is characterized in that: air distribution plate, front wall, Hou Qiang two ends are provided with header; After high before wall of the described end, low dip is arranged; The part water-cooling wall of air distribution plate extends out from the header of top and bends downwards, and header that is final and below homonymy is connected to form cinder notch; Described air distribution plate is provided with some blast caps, and the blast cap being positioned at cinder notch edge is 7 shape guiding blast caps, and all the other are mushroom-shaped blast cap; The wind direction of described guiding blast cap is the tangential direction of circle that cinder notch central point is the center of circle of falling.
2. a kind of isobaric air compartment being applicable to CFB garbage burning boiler according to claim 1, is characterized in that: described in the cinder notch that falls be rectangle, the vertical water-cooling wall inner surface of the cinder notch surrounding that falls is fixed with housing; Described housing section is round rectangle; Housing is welded by four blocks of L shape flaps, and its weld seam is positioned on housing limit.
3. a kind of isobaric air compartment being applicable to CFB garbage burning boiler according to claim 1, is characterized in that: described isobaric cabinet wall is laid with refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757692.4A CN104390218A (en) | 2014-12-12 | 2014-12-12 | Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757692.4A CN104390218A (en) | 2014-12-12 | 2014-12-12 | Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104390218A true CN104390218A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410757692.4A Pending CN104390218A (en) | 2014-12-12 | 2014-12-12 | Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104390218A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110601A (en) * | 2021-11-22 | 2022-03-01 | 华西能源工业股份有限公司 | Fluidized bed air distribution and slag discharge system for solid waste gasification and incineration |
| CN114151810A (en) * | 2021-12-18 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Air distribution and slag discharge structure for solid waste or biomass boiler |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074346A (en) * | 1998-09-01 | 2000-03-14 | Ishikawajima Harima Heavy Ind Co Ltd | Circulation fluidized bed waste heat boiler |
| JP2008074346A (en) * | 2006-09-25 | 2008-04-03 | Toyo Tire & Rubber Co Ltd | Pneumatic tire for off-road run |
| CN201327041Y (en) * | 2008-12-20 | 2009-10-14 | 太原锅炉集团有限公司 | Low energy consumption circulating fluidized bed waste incineration boiler |
| CN201680362U (en) * | 2010-03-31 | 2010-12-22 | 华西能源工业股份有限公司 | Combined air distributing device of circulating fluidized bed boiler |
| CN201875696U (en) * | 2010-11-25 | 2011-06-22 | 郑州锅炉股份有限公司 | Wind chamber system for circulating fluidized bed boiler |
| CN102116471A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院工程热物理研究所 | Device and method for recovering bottom slag heat of circulating fluidized bed boiler |
| CN102235675A (en) * | 2011-08-23 | 2011-11-09 | 无锡太湖锅炉有限公司 | Open air distribution plate for circulating fluidized bed garbage incineration boiler |
| CN202532462U (en) * | 2012-03-19 | 2012-11-14 | 华西能源工业股份有限公司 | Bell type air cap device of circulating fluidized bed boiler |
| CN202532461U (en) * | 2012-03-16 | 2012-11-14 | 华西能源工业股份有限公司 | Air distribution device for circulating fluidized bed boiler |
| CN204388074U (en) * | 2014-12-12 | 2015-06-10 | 华西能源工业股份有限公司 | A kind of isobaric air compartment being applicable to CFB garbage burning boiler |
-
2014
- 2014-12-12 CN CN201410757692.4A patent/CN104390218A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074346A (en) * | 1998-09-01 | 2000-03-14 | Ishikawajima Harima Heavy Ind Co Ltd | Circulation fluidized bed waste heat boiler |
| JP2008074346A (en) * | 2006-09-25 | 2008-04-03 | Toyo Tire & Rubber Co Ltd | Pneumatic tire for off-road run |
| CN201327041Y (en) * | 2008-12-20 | 2009-10-14 | 太原锅炉集团有限公司 | Low energy consumption circulating fluidized bed waste incineration boiler |
| CN102116471A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院工程热物理研究所 | Device and method for recovering bottom slag heat of circulating fluidized bed boiler |
| CN201680362U (en) * | 2010-03-31 | 2010-12-22 | 华西能源工业股份有限公司 | Combined air distributing device of circulating fluidized bed boiler |
| CN201875696U (en) * | 2010-11-25 | 2011-06-22 | 郑州锅炉股份有限公司 | Wind chamber system for circulating fluidized bed boiler |
| CN102235675A (en) * | 2011-08-23 | 2011-11-09 | 无锡太湖锅炉有限公司 | Open air distribution plate for circulating fluidized bed garbage incineration boiler |
| CN202532461U (en) * | 2012-03-16 | 2012-11-14 | 华西能源工业股份有限公司 | Air distribution device for circulating fluidized bed boiler |
| CN202532462U (en) * | 2012-03-19 | 2012-11-14 | 华西能源工业股份有限公司 | Bell type air cap device of circulating fluidized bed boiler |
| CN204388074U (en) * | 2014-12-12 | 2015-06-10 | 华西能源工业股份有限公司 | A kind of isobaric air compartment being applicable to CFB garbage burning boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110601A (en) * | 2021-11-22 | 2022-03-01 | 华西能源工业股份有限公司 | Fluidized bed air distribution and slag discharge system for solid waste gasification and incineration |
| CN114151810A (en) * | 2021-12-18 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Air distribution and slag discharge structure for solid waste or biomass boiler |
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Application publication date: 20150304 |