CN102563630A - Air distribution plate for directional wind cap used for low-speed fluidized bed boiler - Google Patents
Air distribution plate for directional wind cap used for low-speed fluidized bed boiler Download PDFInfo
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- CN102563630A CN102563630A CN201210043933XA CN201210043933A CN102563630A CN 102563630 A CN102563630 A CN 102563630A CN 201210043933X A CN201210043933X A CN 201210043933XA CN 201210043933 A CN201210043933 A CN 201210043933A CN 102563630 A CN102563630 A CN 102563630A
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Abstract
The utility model relates to an air distribution plate for a directional wind cap used for a low-speed fluidized bed boiler. The success of the design of air distribution is directly related to the fluidization of bed materials of a circulating fluidized bed boiler, the combustion and air distribution (uniform or non-uniform) in the bed and the success and the failure of the design of a combustion system. The air distribution plate for the directional wind cap used for the low-speed fluidized bed boiler comprises flat-pate slit type directional wind caps (1), water-cooled supporting pipes (2) and a water cooling system (3), wherein the flat-pate slit type directional wind caps (1) are welded between water-cooled tube plates (4), the water-cooled supporting pipes of the water cooling system are supported below the flat-pate slit type directional wind caps and the water-cooled tube plate, and the water cooling system is connected with the water-cooled tube plate. The air distribution plate for the directional wind cap used for the low-speed fluidized bed boiler is used for the bed surface of the large cross section of a low-speed fluidized bed.
Description
Technical field
the present invention relates to the air-distribution device that uses in a kind of circulates at low fluidized-bed combustion boiler, are specifically related to a kind of wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler.
Background technology
Whether
cloth wind design success or not is directly connected to the bed materials flowization of CFBB good, and whether bed internal combustion air distribution the success or failure of all even combustion system design.
air distribution plate fluidizing agent and solid particle better mixing, thus good fluidized state formed, guaranteed that fluidized bed combustion is stable.This cap structure can effectively prevent wearing and tearing, overcomes material problem such as leakage and deslagging difficulty down, and makes simply, adopts unique helicitic texture, is convenient to installation and maintenance, has bigger resistance scope of design.Successfully solve the not ideal enough and bigger problems such as wearing and tearing of the easy generation of mushroom-shaped blast cap of present column blast cap fluidization quality, in engineering, obtained extensive use.
have multiple for the air distribution plate of low speed circulating fluidized bed.Can be water-cooling structure, also can be heat insulating construction, and present technique adopts independent water-cooling system, self supporting construction with respect to other modes; Simple in structure, flexible; Result of use is good, and the design performance of whole air distribution plate is superior, can effectively guarantee the integral combustion efficient of boiler.
Summary of the invention
the purpose of this invention is to provide a kind of wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler that can make fluidizing agent and solid particle better mixing.
Above-mentioned purpose realizes through following technical scheme:
a kind of wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler; Its composition comprises: dull and stereotyped clearance type wind cap, water-cooled stay pipe, water cooling system; Described dull and stereotyped clearance type wind cap is welded between the water-cooled tube sheet; The water-cooled stay pipe of described water cooling system be supported on described dull and stereotyped clearance type wind cap and described water-cooled tube sheet below, described water cooling system connects described water-cooled tube sheet.
described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler has band steel on the described water-cooled tube sheet, and described dull and stereotyped clearance type wind cap is welded on the described band steel.
described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler, described water-cooled tube sheet is made up of one group of water cooling tube, in the described water cooling tube medium is housed, and described medium is the mixture of water or water and steam.
described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler; Described water cooling system comprises water-cooled distributor; Described water-cooled distributor is supported by described water-cooled stay pipe, and described water-cooled stay pipe connects the electroheat pair that water-circulating pump group, electric check valve, the electroheat pair that has thermometer, the Pressure gauge that has stop valve, the heat exchanger of Pressure gauge group, flowmeter group, stop valve, two-way parallel connection, the Pressure gauge and second that has an electric check valve have thermometer in order.
described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler; Described Pressure gauge group comprises electric check valve, and described electric check valve connects Pressure gauge through pressure switch, and described flowmeter group comprises flow-through orifice; Described flow-through orifice connection traffic speed changer; Described flow speed changer connection traffic table, described water-circulating pump group comprises check-valves, described check-valves connects and has manometric stop valve; Described manometric stop valve connection water-circulating pump, the described water-circulating pump connection stop valve of having.
described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler, described dull and stereotyped clearance type wind cap is processed by the heat-resistance stainless steel plate; The wind speed of blast cap opening part is at 60-80 m/s, and exit flow tilts; By flowing to permutation and combination counterclockwise,, and then form an annular bed material running orbit, favourable deslagging and Transport Bed material by hundreds of blast caps so that form the airflow field of a rotation in the fluid bed bottom; Low speed circulating fluidized bed system air distribution plate resistance drop generally is not less than 30% of a pressure drop.
Beneficial effect:
1. the present invention make fluidizing agent and solid particle better mixing; Thereby form good fluidized state, guaranteed that fluidized bed combustion is stable, bed surface is big when well having solved the big capacity of low speed circulating fluidized bed; The fluidisation uneven phenomenon; This air distribution plate has simple in structure, manufacturing, easy for installation, the characteristics that the underload adaptive capacity is strong.
The present invention flows to permutation and combination counterclockwise through dull and stereotyped clearance type wind cap; Make fluid bed cloth wind even, the flow trace of rationalization's material again is so that form the airflow field of a rotation in the fluid bed bottom; And then form annular bed material running orbit, favourable deslagging and a Transport Bed material
water-cooled distributor 3. of the present invention can make fluidizing agent and solid particle better mixing; Thereby form good fluidized state; Guaranteed that fluidized bed combustion is stable, bed surface is big when well having solved the big capacity of low speed circulating fluidized bed, the fluidisation uneven phenomenon.
4. the present invention have simple in structurely, make, easy for installation, and the characteristics that the underload adaptive capacity is strong have realized fine particle low speed fluidisation and rationally got rid of large granular materials.
deft design of the present invention, water-cooling system adopt self water-cooled support, are superior to traditional stainless steel ventilation girder construction.A large amount of wind caps, water-cooled bed surface, water-cooled support, water cooling system etc. constitute an air distribution plate system.
The present invention has guaranteed that fluid bed cloth wind is even, has realized the flow trace of rationalization's material, has solved the uniformity of cloth wind, and blast cap outlet wind speed is reasonable, and then has guaranteed that certain air distribution plate resistance reduction is not less than 30% of a pressure drop
air distribution plate 7. of the present invention cooperates independently water cooling system, simple, the control easily flexibly of this water cooling system; The air distribution plate fluidizing agent is better with mixing of solid particle, thereby has formed good fluidized state, has guaranteed the stable of fluidized bed combustion.
8. the present invention can effectively prevent wearing and tearing, overcome material problem such as leakage and deslagging difficulty down, and make simply, are convenient to installation and maintenance, have bigger resistance scope of design; Successfully solve the not ideal enough and bigger problems such as wearing and tearing of the easy generation of mushroom-shaped blast cap of present column blast cap fluidization quality, in engineering, obtained extensive use.
the present invention adopts dull and stereotyped clearance type wind cap, and the employing Welding Structure is convenient to installation and maintenance, has bigger resistance scope of design, can effectively prevent wearing and tearing, overcomes bed material problem such as leakage and deslagging difficulty down.
the present invention reaches the purpose of the burner hearth bed being expected even fluidisation and directed flow, thereby promotes burning of coal, the discharging of limestone desulfurization and lime-ash through recirculated water cooling and using directed mobile blast cap technology.
air distribution plate of the present invention cooperates independently water cooling system, simple, the control easily flexibly of system; Air distribution plate itself adopts wind-distributing pipe plate self water-cooled to support, and this kind supporting construction can guarantee that air distribution plate is indeformable under the condition of high temperature, safety, reliable.
The present invention is used for the heavy in section bed surface of low speed circulating fluidized bed, adopts this air distribution plate cloth wind even, and fluidisation property is good, reaches good fluidization quality and air distribution plate resistance;
13. structures of the present invention are ingenious simple, and that can effectively realize technology will guarantee that adaptability is strong, wide adaptability; Have good substance reaction, heat transfer, mass-transfer performance, improve boiler efficiency.
the present invention can effectively utilize colm and industrial waste fuel such as gas-making cinder, petroleum coke, and its environmental protection and energy-saving effect are remarkable.
Description of drawings:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is A – A cutaway views of Fig. 1.
accompanying drawing 3 is fragmentary detail view of Fig. 1.
accompanying drawing 4 is fragmentary detail view of Fig. 2.
accompanying drawing 5 is water-cooling system overall diagram.
The specific embodiment:
Embodiment 1:
a kind of wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler; Its composition comprises: dull and stereotyped clearance type wind cap 1, water-cooled stay pipe 2, water cooling system 3; Described dull and stereotyped clearance type wind cap is welded between the water-cooled tube sheet 4 of air distribution plate; Described water-cooled stay pipe be supported on described dull and stereotyped clearance type wind cap and described air distribution plate the water-cooled tube sheet below, described water cooling system connects the water-cooled tube sheet of described air distribution plate.
Embodiment 2:
Embodiment 3:
Embodiment 4:
Embodiment 5:
Embodiment 6:
Embodiment 7:
The described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler of
the foregoing description; Air distribution plate cooperates independently water cooling system; The power pressure head of this water system is provided through two water-circulating pumps arranged side by side; Instrument valves such as stop valve, check-valves, Pressure gauge, thermometer, flowmeter, flow transmitter, pressure switch are arranged on the pipeline, through flow, temperature, the pressure parameter of recirculated water in the control system, control the temperature of cooling air distribution plate tube sheet in the running; Exchange away the heat that the cooling air distribution plate brings through heat exchanger then.
Embodiment 8:
The described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler of
the foregoing description; The structural design that relates to air distribution plate; This air distribution plate mainly is made up of blast cap, water cooling tube, water-cooled stay pipe and water cooling system, and described blast cap is fixed on the water cooling tube, and water cooling tube is placed on the water cooled holder; Independently water cooling system is adopted in the cooling of air distribution plate, contains dull and stereotyped clearance type wind cap, air distribution plate water-cooled tube sheet, water-cooled stay pipe, water cooling system.It is characterized in that flowing to permutation and combination counterclockwise through dull and stereotyped clearance type wind cap; Make fluid bed cloth wind even, the flow trace of rationalization's material again is so that form the airflow field of a rotation in the fluid bed bottom; And then form annular bed material running orbit, favourable deslagging and a Transport Bed material.
dull and stereotyped clearance type wind cap is to be welded to connect between air distribution plate water-cooled tube sheet, and dull and stereotyped clearance type wind cap is welded on the air distribution plate water-cooled tube sheet band steel.The water-cooled stay pipe is supported under the air distribution plate water-cooled tube sheet, plays the effect of supports cloth aerofoil water-cooled tube sheet.
said water cooling system, water cooling system links to each other with air distribution plate water-cooled tube sheet water side, is responsible for cooling air distribution plate water-cooled tube sheet, and its working media is the mixture of water or water and steam.
are provided with a hundreds of big blast cap of dull and stereotyped clearance type on air distribution plate; The direction towards according to the rules of blast cap is installed; Bed flow track then needs hundreds of blast caps by flowing to permutation and combination counterclockwise; So that form the airflow field of a rotation in the fluid bed bottom, and then form annular bed material running orbit, favourable deslagging and a Transport Bed material.
Embodiment 9:
The described wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler of
the foregoing description, independently water-cooling system connects the water cooling tube of water-cooled distributor, makes it become a controlled water-cooling system, guarantees that whole air distribution plate is safe and reliable.
Claims (6)
1. wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler; Its composition comprises: dull and stereotyped clearance type wind cap, water-cooled stay pipe, water cooling system; It is characterized in that: described dull and stereotyped clearance type wind cap is welded between the water-cooled tube sheet; The water-cooled stay pipe of described water cooling system be supported on described dull and stereotyped clearance type wind cap and described water-cooled tube sheet below, described water cooling system connects described water-cooled tube sheet.
2. the wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler according to claim 1 is characterized in that: have band steel on the described water-cooled tube sheet, described dull and stereotyped clearance type wind cap is welded on the described band steel.
3. the wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler according to claim 1 and 2; It is characterized in that: described water-cooled tube sheet is made up of one group of water cooling tube; In the described water cooling tube medium is housed, described medium is the mixture of water or water and steam.
4. the wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler according to claim 1 and 2; It is characterized in that: described water cooling system comprises water-cooled distributor; Described water-cooled distributor is supported by described water-cooled stay pipe, and described water-cooled stay pipe connects the electroheat pair that water-circulating pump group, electric check valve, the electroheat pair that has thermometer, the Pressure gauge that has stop valve, the heat exchanger of Pressure gauge group, flowmeter group, stop valve, two-way parallel connection, the Pressure gauge and second that has an electric check valve have thermometer in order.
5. the wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler according to claim 4; It is characterized in that: described Pressure gauge group comprises electric check valve, and described electric check valve connects Pressure gauge through pressure switch, and described flowmeter group comprises flow-through orifice; Described flow-through orifice connection traffic speed changer; Described flow speed changer connection traffic table, described water-circulating pump group comprises check-valves, described check-valves connects and has manometric stop valve; Described manometric stop valve connection water-circulating pump, the described water-circulating pump connection stop valve of having.
6. the wind cap air distribution plate that is used for the low speed circulating fluidized bed boiler according to claim 1 and 2 is characterized in that: described dull and stereotyped clearance type wind cap, process by the heat-resistance stainless steel plate; The wind speed of blast cap opening part is at 60-80 m/s, and exit flow tilts; By flowing to permutation and combination counterclockwise,, and then form an annular bed material running orbit, favourable deslagging and Transport Bed material by hundreds of blast caps so that form the airflow field of a rotation in the fluid bed bottom; Low speed circulating fluidized bed system air distribution plate resistance drop generally is not less than 30% of a pressure drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043933.XA CN102563630B (en) | 2012-02-26 | 2012-02-26 | For the wind cap air distribution plate of low speed circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043933.XA CN102563630B (en) | 2012-02-26 | 2012-02-26 | For the wind cap air distribution plate of low speed circulating fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102563630A true CN102563630A (en) | 2012-07-11 |
| CN102563630B CN102563630B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210043933.XA Active CN102563630B (en) | 2012-02-26 | 2012-02-26 | For the wind cap air distribution plate of low speed circulating fluidized bed boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449872A (en) * | 2014-12-11 | 2015-03-25 | 余传林 | Gasification process system for fine particle biomass or solid fossil fuel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2335514A1 (en) * | 1973-07-12 | 1975-02-06 | Ciba Geigy Ag | Hot air treatment in fluidised bed - esp. of heat sensitive material with air inlets above bed floor |
| GB2075360A (en) * | 1980-04-09 | 1981-11-18 | Foster Wheeler Energy Corp | Water-cooled fluidised bed distributor plate |
| CN1034145A (en) * | 1987-12-11 | 1989-07-26 | 法国煤矿公立公益公司 | A kind of fluidization grid through cooling |
| CN101025333A (en) * | 2007-03-23 | 2007-08-29 | 清华大学 | Hot-air generating apparatus for biological substance for combustion |
| CN202501454U (en) * | 2012-02-26 | 2012-10-24 | 哈尔滨锅炉厂有限责任公司 | Oriented hood air distribution board for low-speed fluidized bed boiler |
-
2012
- 2012-02-26 CN CN201210043933.XA patent/CN102563630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2335514A1 (en) * | 1973-07-12 | 1975-02-06 | Ciba Geigy Ag | Hot air treatment in fluidised bed - esp. of heat sensitive material with air inlets above bed floor |
| GB2075360A (en) * | 1980-04-09 | 1981-11-18 | Foster Wheeler Energy Corp | Water-cooled fluidised bed distributor plate |
| CN1034145A (en) * | 1987-12-11 | 1989-07-26 | 法国煤矿公立公益公司 | A kind of fluidization grid through cooling |
| CN101025333A (en) * | 2007-03-23 | 2007-08-29 | 清华大学 | Hot-air generating apparatus for biological substance for combustion |
| CN202501454U (en) * | 2012-02-26 | 2012-10-24 | 哈尔滨锅炉厂有限责任公司 | Oriented hood air distribution board for low-speed fluidized bed boiler |
Non-Patent Citations (1)
| Title |
|---|
| 赵旺初: "我国CFB锅炉的发展及国内外经验", 《发电设备》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449872A (en) * | 2014-12-11 | 2015-03-25 | 余传林 | Gasification process system for fine particle biomass or solid fossil fuel |
| CN104449872B (en) * | 2014-12-11 | 2016-08-10 | 余传林 | A kind of fine particle biomass or the gasifying process system of solid fossil fuel |
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| Publication number | Publication date |
|---|---|
| CN102563630B (en) | 2016-03-16 |
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