CN102563630B - For the wind cap air distribution plate of low speed circulating fluidized bed boiler - Google Patents
For the wind cap air distribution plate of low speed circulating fluidized bed boiler Download PDFInfo
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- CN102563630B CN102563630B CN201210043933.XA CN201210043933A CN102563630B CN 102563630 B CN102563630 B CN 102563630B CN 201210043933 A CN201210043933 A CN 201210043933A CN 102563630 B CN102563630 B CN 102563630B
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Abstract
<b> is used for the wind cap air distribution plate of low speed circulating fluidized bed boiler.Whether the bed streamization that cloth wind design success or not is directly connected to CFBB is good, the success or failure of the whether all even Combustion System Design of bed combustion air distribution.A kind of wind cap air distribution plate for low speed circulating fluidized bed boiler, its composition comprises dull and stereotyped clearance type wind cap (</b><bGreatT.Gre aT.GT1</b><bGrea tT.GreaT.GT) of </b><bGreatT.Gre aT.GT:</b><bGrea tT.GreaT.GT, water-cooled stay pipe (</b><bGreatT.Gre aT.GT2</b><bGrea tT.GreaT.GT), water cooling system </b><bGreatT.Gre aT.GT (3) </b><bGreatT.Gre aT.GT, described dull and stereotyped clearance type wind cap is welded between water-cooled tube sheet (</b><bGreatT.Gre aT.GT4</b><bGrea tT.GreaT.GT), the water-cooled stay pipe of described water cooling system is supported on below described dull and stereotyped clearance type wind cap and described water-cooled tube sheet, water-cooled tube sheet described in described water cooling system connects.The present invention is used for the heavy in section bed surface of low speed circulating fluidized bed.The present invention is used for the heavy in section bed surface of low speed circulating fluidized bed.</b>
Description
Technical field
the present invention relates to the air-distribution device used in a kind of circulated at low velocity fluidized-bed combustion boiler, be specifically related to a kind of wind cap air distribution plate for low speed circulating fluidized bed boiler.
Background technology
whether the bed streamization that cloth wind design success or not is directly connected to CFBB is good, the success or failure of the whether all even Combustion System Design of bed combustion air distribution.
air distribution plate fluidizing agent better mixes with solid particle, thus forms good fluidized state, ensure that fluidized bed combustion is stablized.This cap structure effectively can prevent wearing and tearing, overcomes and to leak under bed material and the problem such as deslagging difficulty, and manufacture simple, adopt the helicitic texture of uniqueness, be convenient to installation and maintenance, have larger resistance scope of design.Successfully solve the not ideal enough and mushroom-shaped blast cap of current column blast cap fluidization quality and easily produce the problems such as larger wearing and tearing, be widely applied in engineering.
air distribution plate for low speed circulating fluidized bed has multiple.Can be water-cooling structure, also can be heat insulating construction, and this technology adopts independent water-cooling system, selve support structure relative to other modes, structure is simple, flexible, result of use is good, and the design performance of overall air distribution plate is superior, effectively can ensure the integral combustion efficiency of boiler.
Summary of the invention
the object of this invention is to provide a kind of wind cap air distribution plate for low speed circulating fluidized bed boiler that fluidizing agent and solid particle can be made better to mix.
above-mentioned object is realized by following technical scheme:
a kind of wind cap air distribution plate for 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 water-cooled tube sheet, the water-cooled stay pipe of described water cooling system is supported on below described dull and stereotyped clearance type wind cap and described water-cooled tube sheet, the water-cooled tube sheet described in described water cooling system connects.
the described wind cap air distribution plate for low speed circulating fluidized bed boiler, described water-cooled tube sheet has band steel, and described dull and stereotyped clearance type wind cap is welded on described band steel.
the described wind cap air distribution plate for low speed circulating fluidized bed boiler, described water-cooled tube sheet is made up of one group of water cooling tube, and described water cooling tube is built with medium, and described medium is the mixture of water or water and steam.
the described wind cap air distribution plate for 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, described water-cooled stay pipe in turn the water-circulating pump group of Bonding pressure table group, flowmeter group, stop valve, two-way parallel connection, electric check valve, the electroheat pair with thermometer, the Pressure gauge with stop valve, heat exchanger, with the Pressure gauge and second of electric check valve with the electroheat pair of thermometer.
the described wind cap air distribution plate for low speed circulating fluidized bed boiler, described Pressure gauge group comprises electric check valve, described electric check valve is by pressure switch Bonding pressure table, 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 with manometric stop valve, described connects water-circulating pump with manometric stop valve, and described water-circulating pump connects stop valve.
the described wind cap air distribution plate for low speed circulating fluidized bed boiler, described dull and stereotyped clearance type wind cap, is made up of heat-resistance stainless steel plate; The wind speed of blast cap opening part is at 60-80m/s, and exit flow tilts; By hundreds of blast caps by flowing to permutation and combination counterclockwise, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material; Low velocity fluidization bed system air distribution plate resistance falls and is generally not less than 30% of a pressure drop.
beneficial effect:
1. the present invention makes fluidizing agent better mix with solid particle, thus form good fluidized state, ensure that fluidized bed combustion is stablized, when well solving low speed circulating fluidized bed Large Copacity, bed surface is large, fluidisation uneven phenomenon, it is simple that this air distribution plate has structure, manufactures, easy for installation, the feature that underload is adaptable.
the present invention flows to permutation and combination counterclockwise by dull and stereotyped clearance type wind cap, make fluid bed cloth wind even, the flow trace of rationalization's material again, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material
3. water-cooled distributor of the present invention can make fluidizing agent better mix with solid particle, thus forms good fluidized state, and ensure that fluidized bed combustion is stablized, when well solving low speed circulating fluidized bed Large Copacity, bed surface is large, fluidisation uneven phenomenon.
4. to have structure simple in the present invention, manufactures, easy for installation, and the feature that underload is adaptable, achieves fine particle low velocity fluidization and rationally get rid of large granular materials.
deft design of the present invention, water-cooling system adopts self water-cooled to support, and is better than traditional stainless steel ventilation beam structure.A large amount of wind caps, water-cooled bed surface, water-cooled support, water cooling system etc. form an air distribution plate system.
this invention ensures that fluid bed cloth wind is even, achieve the flow trace of rationalization's material, solve the uniformity of cloth wind, blast cap air outlet velocity is reasonable, and then ensure that certain air distribution plate resistance reduction is not less than 30% of a pressure drop
7. air distribution plate of the present invention coordinates independently water cooling system, and this water cooling system is simple, easily control flexibly; Air distribution plate fluidizing agent is better with mixing of solid particle, thus defines good fluidized state, ensure that the stable of fluidized bed combustion.
8. the present invention effectively can prevent wearing and tearing, overcomes and to leak under bed material and the problem such as deslagging difficulty, and manufacture simply, be convenient to installation and maintenance, have larger resistance scope of design; Successfully solve the not ideal enough and mushroom-shaped blast cap of current column blast cap fluidization quality and easily produce the problems such as larger wearing and tearing, be widely applied in engineering.
the present invention adopts dull and stereotyped clearance type wind cap, adopts Welding Structure, is convenient to installation and maintenance, has larger resistance scope of design, effectively can prevent wearing and tearing, overcomes and to leak under bed material and the problem such as deslagging is difficult.
the present invention passes through circulating water and using directed flowing blast cap technology, reaches even fluidizing for burner hearth bed material and object that is directed flow, thus promotes burning of coal, the discharge of limestone desulfurization and lime-ash.
air distribution plate of the present invention coordinates independently water cooling system, and system is simple, easily control flexibly; Air distribution plate itself adopts wind-distributing pipe plate self water-cooled to support, and this kind of supporting construction can ensure that air distribution plate is indeformable at high operating temperatures, safely, reliably.
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, fluidity good, reaches good fluidization quality and air distribution plate resistance;
13. structures of the present invention are simply ingenious, effectively can realize will guaranteeing of technique, strong adaptability, wide adaptability; There is good substance reaction, heat transfer, mass-transfer performance, improve boiler efficiency.
the present invention effectively can utilize colm and the industrial waste such as gas-making cinder, petroleum coke fuel, its environmental protection and energy-saving effect remarkable.
accompanying drawing illustrates:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is A – A sectional 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.
detailed description of the invention:
embodiment 1:
a kind of wind cap air distribution plate for 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 is supported on below the water-cooled tube sheet of described dull and stereotyped clearance type wind cap and described air distribution plate, the water-cooled tube sheet of the air distribution plate described in described water cooling system connects.
embodiment 2:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in embodiment 1, the water-cooled tube sheet of described air distribution plate has band steel 5, and described dull and stereotyped clearance type wind cap is welded on described band steel.
embodiment 3:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in embodiment 1 or 2, the water-cooled tube sheet of described air distribution plate is made up of one group of water cooling tube, and described water cooling tube is built with medium, and described medium is the mixture of water or water and steam.
embodiment 4:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in embodiment 1 or 2, described water cooling system comprises water-cooled distributor 6, described water-cooled distributor is supported by water-cooled stay pipe, described water-cooled stay pipe in turn the water-circulating pump group of Bonding pressure table group, flowmeter group, stop valve 8, two-way parallel connection, electric check valve 9, the electroheat pair 11 with thermometer 10, the Pressure gauge 12 with stop valve, heat exchanger 13, with the Pressure gauge and second of electric check valve 14 with the electroheat pair of thermometer.
embodiment 5:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in embodiment 4, described Pressure gauge group comprises electric check valve, described electric check valve is by pressure switch 15 Bonding pressure table, described flowmeter group comprises flow-through orifice, described flow-through orifice connection traffic speed changer 16, described flow speed changer connection traffic table 17, described water-circulating pump group comprises check-valves 18, described check-valves connects with manometric stop valve, described connects water-circulating pump 19 with manometric stop valve, and described water-circulating pump connects stop valve.
embodiment 6:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in embodiment 1 or 2, described dull and stereotyped clearance type wind cap, is made up of heat-resistance stainless steel plate; The wind speed of blast cap opening part at 60-80m/s, exit flow be tilt as accompanying drawing 3; By hundreds of blast caps by flowing to permutation and combination counterclockwise, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material; Low velocity fluidization bed system air distribution plate resistance falls and is generally not less than 30% of a pressure drop.
embodiment 7:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in above-described embodiment, air distribution plate coordinates independently water cooling system, the power pressure head of this water system is provided by two water-circulating pumps arranged side by side, pipeline there are the instrument valves such as stop valve, check-valves, Pressure gauge, thermometer, flowmeter, flow transmitter, pressure switch, by flow, temperature, the pressure parameter of recirculated water in control system in running, carry out the temperature of controlled cooling model air distribution plate tube sheet; Then the heat walked to cool air distribution plate and bring is exchanged by heat exchanger.
embodiment 8:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in above-described embodiment, relate to the structural design of air distribution plate, this air distribution plate is formed primarily of blast cap, water cooling tube, water-cooled stay pipe and water cooling system, described blast cap is fixed on water cooling tube, water cooling tube is placed in water cooled holder, the cooling of air distribution plate adopts independently water cooling system, containing 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 by dull and stereotyped clearance type wind cap, make fluid bed cloth wind even, the flow trace of rationalization's material again, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material.
dull and stereotyped clearance type wind cap is be welded to connect between air distribution plate water-cooled tube sheet, and dull and stereotyped clearance type wind cap is welded on air distribution plate water-cooled tube sheet band steel.Water-cooled stay pipe is supported under air distribution plate water-cooled tube sheet, plays the effect of supports cloth aerofoil water-cooled tube sheet.
described water cooling system, water cooling system is connected with air distribution plate water-cooled tube sheet water side, and be responsible for cooling air distribution plate water-cooled tube sheet, its working media is the mixture of water or water and steam.
air distribution plate arranges a hundreds of large blast cap of dull and stereotyped clearance type, installing towards the direction according to regulation of blast cap, bed material flow trace then needs hundreds of blast caps by flowing to permutation and combination counterclockwise, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material.
embodiment 9:
the wind cap air distribution plate for low speed circulating fluidized bed boiler described in above-described embodiment, independently water-cooling system connects the water cooling tube of water-cooled distributor, becomes a controlled water-cooling system, ensures that overall air distribution plate is safe and reliable.
Claims (2)
1.
a kind of wind cap air distribution plate for 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 water-cooled tube sheet, the water-cooled stay pipe of described water cooling system is supported on below described dull and stereotyped clearance type wind cap and described water-cooled tube sheet, water-cooled tube sheet described in described water cooling system connects, described water-cooled tube sheet has band steel, described dull and stereotyped clearance type wind cap is welded on described band steel, described water-cooled tube sheet is made up of one group of water cooling tube, described water cooling tube is built with medium, described medium is the mixture of water or water and steam, permutation and combination is flowed to counterclockwise by dull and stereotyped clearance type wind cap, make fluid bed cloth wind even, the flow trace of rationalization's material again, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material.
2.
wind cap air distribution plate for low speed circulating fluidized bed boiler according to claim 1, 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, described water-cooled stay pipe Bonding pressure table group in turn, flowmeter group, stop valve, the water-circulating pump group of two-way parallel connection, electric check valve, with the electroheat pair of thermometer, with the Pressure gauge of stop valve, heat exchanger, with the Pressure gauge and second of electric check valve with the electroheat pair of thermometer, described Pressure gauge group comprises electric check valve, described electric check valve is by pressure switch Bonding pressure table, 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 with manometric stop valve, described connects water-circulating pump with manometric stop valve, described water-circulating pump connects stop valve, described dull and stereotyped clearance type wind cap, be made up of heat-resistance stainless steel plate, the wind speed of blast cap opening part is at 60-80m/s, and exit flow tilts, by hundreds of blast caps by flowing to permutation and combination counterclockwise, to form an airflow field rotated at fluidized-bed bottom, and then form an annular bed material running orbit, favourable deslagging and conveying bed material, low velocity fluidization bed system air distribution plate resistance falls and is not less than 30% of a pressure drop, by circulating water and using directed flowing blast cap technology, reach even fluidizing for burner hearth bed material and object that is directed flow, thus promotion burning of coal, the discharge of limestone desulfurization and lime-ash, air distribution plate coordinates independently water cooling system, system is simple, easily control flexibly, air distribution plate itself adopts wind-distributing pipe plate self water-cooled to support, this kind of supporting construction can ensure that air distribution plate is indeformable at high operating temperatures, safely, reliably.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210043933.XA 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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| CN102563630A CN102563630A (en) | 2012-07-11 |
| CN102563630B true CN102563630B (en) | 2016-03-16 |
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| 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 |
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 |
|---|
| 我国CFB锅炉的发展及国内外经验;赵旺初;《发电设备》;20071231(第06期);第503-505页 * |
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