CN2888281Y - Middle temperature separation circulating fluidized bed hot water boiler - Google Patents
Middle temperature separation circulating fluidized bed hot water boiler Download PDFInfo
- Publication number
- CN2888281Y CN2888281Y CN 200620024349 CN200620024349U CN2888281Y CN 2888281 Y CN2888281 Y CN 2888281Y CN 200620024349 CN200620024349 CN 200620024349 CN 200620024349 U CN200620024349 U CN 200620024349U CN 2888281 Y CN2888281 Y CN 2888281Y
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- boiler
- heater
- cyclone separator
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Abstract
A mid temperature separation recycling flowing machine heating water boiler belongs to a recycling flowing machine boiler field. Inside a tail flue is equipped with an air pre-heater, the tail flue is communicated with a cyclonic separator, which is communicated with the boiler body, the bottom of the boiler is connected with the thick solution area. A wind return device is installed between the cyclonic separator and the thick solution area, the bottom end of the cyclonic separator is connected with a screw ash catcher; on the upper of the oven body is equipped with a water cooling curtain and a high temperature coal saving device; the middle of the boiler body is a sparse solution area, two times wind port and three times wind port are located in the sparse solution area; the bottom of the boiler is the thick solution area, the wind room is located in the bottom of the thick solution area and is communicated with the one time wind port, a wind distributer is located on the wind room; on the upper inside the tail flue is equipped with a low temperature coal saving device, on the lower inside the tail flue is equipped with the air pre-heater; on the inner wall of the boiler chamber is equipped with a fireproof material layer, on the upper boiler body of the boiler chamber is equipped with an anti wear plate. The whole boiler recycling system is safe and reliable and without the possibility of sintering. Adopting the water cooling curtain, the temperature control is more safe and reliable.
Description
Technical field
The utility model relates to a kind of CFBB, particularly relate to a kind of in warm separating cycle fluid bed heat homogeneous solution-type reactor, belong to thermal powerplant.
Background technology
General higher about about 40 times of the circulating ratio of present recirculating fluidized bed, flue gas flow rate is generally 6～8 meter per seconds, and the cyclone inlet flue-gas temperature generally is controlled at about 850 ℃.The ubiquitous shortcoming of this boiler is that efficiency of combustion is low, serious wear, continous-stable running time is short, coking may appear in the circulating ash system, the boiler adjusting function is poor, start-up time is long etc.Wherein low, the serious wear of efficiency of combustion is the most scabrous two hang-ups of CFBB, also is the factor that influences the boiler performance most critical.
Summary of the invention
The technical problems to be solved in the utility model is the defective at prior art, and the middle temperature separating cycle fluid bed heat homogeneous solution-type reactor of a kind of efficiency of combustion height, little, the dependable performance of wearing and tearing, energy-conserving and environment-protective is provided.
Solve the problems of the technologies described above by the following technical solutions: warm separating cycle fluid bed heat homogeneous solution-type reactor in a kind of comprises boiler furnace, places drum, cyclone separator, loop back device and the back-end ductwork of body of heater front portion.In its back-end ductwork air preheater is housed, back-end ductwork is communicated with cyclone separator, the cyclone separator that is in flue-gas temperature and is in 400～500 ℃ is communicated with body of heater, its bottom links to each other with concentrated phase area, loop back device is positioned at cyclone separator and concentrated phase area between the two, and the bottom of cyclone separator is connected with the spiral soot blower; The top of described body of heater is provided with water-cooled screen and high-temperature economizer; The middle part of described body of heater is a dilute-phase zone, and overfiren air port, tertiary air orifice are positioned at dilute-phase zone; The bottom of body of heater is a concentrated phase area, and the bottom that air compartment is positioned at concentrated phase area is communicated with a wind inlet, and air-distribution device is positioned on the air compartment; Described back-end ductwork internal upper part is equipped with low-level (stack-gas) economizer, and air preheater is equipped with in the bottom; Inboard wall of burner hearth is provided with refractory masses, is provided with wear strip in the top body of heater of burner hearth.
According to technique scheme, compared with prior art, the separative efficiency of the utility model cyclone separator is not less than 98.5%, the separative efficiency height, and the flue-gas temperature at cyclone separator place is 400～500 ℃, and whole circulation system is safe and reliable, the possibility of no coking.Because the cigarette temperature is low, cyclone separator is little with the few thermal inertia of flame-proof thermal insulation material, and start-up time is short, and blowing out is rapid.
Furnace height section guarantees the residence time of fuel in burner hearth, reduces fluidizing velocity, reduces flue gas band ash ability, makes the fuel after-flame in stove less than the critical particle separation diameter of separator.
The temperature height of dilute-phase zone is 950～1050 ℃, can accelerate burning velocity.Air distribution is reasonable, is provided with two at the middle part of burner hearth, tertiary air fully mixes fuel and oxygen, by above measure, can make full combustion of fuel, improves efficiency of combustion.The utility model adopts the mode of air zoning, NO
X, CO discharging is very low.Recirculating fluidized bed adopts low temperature combustion mode to carry out desulfuration in furnace, SO
XDischarge very lowly, the boiler good environmental protection reaches national requirements for environmental protection fully.
Employing water-cooled screen makes temperature control more safe and reliable.
Adopt dull and stereotyped abrasionproof form, the whole lining refractories of burner hearth, boiler heating surface does not have wearing and tearing.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.The utility model is by drum, furnace wall cooling, air compartment 10 and enter the mouth 9, water-cooled screen 15, high-temperature economizer 16, cyclone separator 1 composition such as grade.All by hanging on the crossbeam that is hung in steelframe, furnace wall cooling can freely expand downwards these parts.Referring to Fig. 1, the utility model is divided into body of heater, cyclone separator 1, back-end ductwork and four parts of drum, and drum is positioned at the top of body of heater, and the suitable for reading and cyclone separator 1 of back-end ductwork is communicated with, and cyclone separator 1 is communicated with the upper end of body of heater.The bottom of body of heater is a concentrated phase area 11, and the bottom that air compartment 10 is positioned at concentrated phase area 11 is communicated with a wind inlet 9, and air-distribution device 8 is positioned at the concentrated phase area 11 on the air compartment 10.Concentrated phase area 11 1 sides are communicated with coal feeding hole 5, and coal feeding hole 5 is connected with loop back device 6, and loop back device 6 is connected with the bottom of cyclone separator 1.Loop back device 6, cyclone separator 1 are supported on that its bottom is connected with spiral soot blower 20 on the steelframe of body of heater, and spiral soot blower 20 is connected driving with frequency control motor 19.The roots blower 7 of loop back device 6 bottoms provides stable time grey blast, air quantity, and it is smooth and easy to guarantee that boiler returns ash.The ash amount how much controlled back of ash disposal amount what by spiral soot blower 20 VFC,, control simple and reliable with to cyclone separator 1 bottom.The middle part of body of heater is a dilute-phase zone 14, and overfiren air port 12, tertiary air orifice 13 are positioned at dilute-phase zone 14.The top of body of heater is provided with water-cooled screen 15 and high-temperature economizer 16 according to the order of sequence.As Fig. 1, the back-end ductwork internal upper part is equipped with low-level (stack-gas) economizer 2, and the air preheater 3 that four groups of upper and lower settings are installed is equipped with in the bottom, and exhanst gas outlet 4 is arranged at the bottom.In order to reduce the wearing and tearing of heating surface, inboard wall of burner hearth all serves as a contrast and pastes one deck refractory brick liner 18, constitutes flame retardant coating.Install wear strip 17 additional on the top water-cooling wall of burner hearth, this set can prevent the wearing and tearing of heating surface elbow and water-cooling wall effectively, improves the continuous operating time of hot-water boiler, guarantees that hot-water boiler does not have wearing and tearing at an overhaul after date.
The course of work of the present utility model: air and gas system flow process: by the hot-air after air preheater 3 heating, the air compartment 10 that a part (about 50%) is introduced lower furnace portion makes wind evenly enter concentrated phase area 11 in the stove through air-distribution device 8, make recycle stock fluidisation and the interior fuel combustion of help adding stove in the stove, another part wind divides two parts, send at the burner hearth middle part, secondary wind accounts for 30%, tertiary air accounts for 20%, two, tertiary air has strengthened disturbance in the stove, strengthen fuel and Air mixing, improve efficiency of combustion.Air zoning makes NO in the stove
XGrowing amount reduce; after the fuel combustion; after the heat part is absorbed by furnace wall cooling; make the flue-gas temperature that generates after the fuel combustion reduce to the water-cooled screen 15 that enters the stove internal upper part behind as shown in fig. 1 950～1050 ℃; high-temperature flue gas temperature after by stove internal heating surface, water-cooled screen 15, high-temperature economizer 16 is reduced to 450～500 ℃ (upper ends in the stove); enter cyclone separator 1 then; the temperature that makes cyclone separator 1 place is 450～500 ℃; behind cyclone separator 1, the bulky grain ash that separates enters circulating combustion in the stove together through loop back device 6 and coal.Clean flue gas after the separation enters back-end ductwork makes cigarette temperature drop to about about 140 ℃ discharge hot-water boiler bodies enter deduster through low-level (stack-gas) economizer 2 and air preheater 3.
The current journey: backwater at first enters low-level (stack-gas) economizer 16, and the Lower Half that enters drum through furnace wall cooling enters high-temperature economizer 16 more again, enters the drum first half then through water-cooled screen 15 again, finally causes the user through delivery port.
Claims (4)
1, warm separating cycle fluid bed heat homogeneous solution-type reactor in a kind of, comprise boiler furnace, place drum, cyclone separator, loop back device and the back-end ductwork of upper of furnace body, it is characterized in that, in its back-end ductwork air preheater is housed, back-end ductwork is communicated with cyclone separator, the cyclone separator that is in flue-gas temperature and is in 400～500 ℃ is communicated with body of heater, its bottom links to each other with concentrated phase area, loop back device is positioned at cyclone separator and concentrated phase area between the two, and the bottom of cyclone separator is connected with the spiral soot blower; The top of described body of heater is provided with water-cooled screen and high-temperature economizer; The middle part of described body of heater is a dilute-phase zone, and overfiren air port, tertiary air orifice are positioned at dilute-phase zone; The bottom of body of heater is a concentrated phase area, and the bottom that air compartment is positioned at concentrated phase area is communicated with a wind inlet, and air-distribution device is positioned on the air compartment; Described back-end ductwork internal upper part is equipped with low-level (stack-gas) economizer, and air preheater is equipped with in the bottom; Inboard wall of burner hearth is provided with refractory masses, is provided with wear strip in the top body of heater of burner hearth.
2, warm separating cycle fluid bed heat homogeneous solution-type reactor in according to claim 1 is characterized in that described concentrated phase area is communicated with coal feeding hole; Coal feeding hole is connected with loop back device, and loop back device is connected on the steelframe that is supported on body of heater in the lump with cyclone separator.
3, warm separating cycle fluid bed heat homogeneous solution-type reactor in according to claim 1 is characterized in that described cyclone separator is connected with the upper end of body of heater.
4, warm separating cycle fluid bed heat homogeneous solution-type reactor in according to claim 1 is characterized in that four groups of air preheaters are housed in the described back-end ductwork, and the lower end of back-end ductwork is provided with exhanst gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024349 CN2888281Y (en) | 2006-04-30 | 2006-04-30 | Middle temperature separation circulating fluidized bed hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024349 CN2888281Y (en) | 2006-04-30 | 2006-04-30 | Middle temperature separation circulating fluidized bed hot water boiler |
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| Publication Number | Publication Date |
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| CN2888281Y true CN2888281Y (en) | 2007-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024349 Expired - Lifetime CN2888281Y (en) | 2006-04-30 | 2006-04-30 | Middle temperature separation circulating fluidized bed hot water boiler |
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| CN (1) | CN2888281Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943395A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Circulating fluidized bed boiler |
| CN102213415A (en) * | 2011-04-28 | 2011-10-12 | 广州迪森热能技术股份有限公司 | Preparation system of biomass fume |
| CN102240614A (en) * | 2011-04-28 | 2011-11-16 | 广州迪森热能技术股份有限公司 | Biomass flue gas cyclone separator |
| CN102777895A (en) * | 2012-07-24 | 2012-11-14 | 武汉和信益科技有限公司 | Semi-tower type medium-temperature separation biomass circulating fluidized bed boiler |
| CN109746130A (en) * | 2019-03-23 | 2019-05-14 | 湖北华电襄阳发电有限公司 | Gasification of biomass recirculating fluidized bed whirlwind separator |
-
2006
- 2006-04-30 CN CN 200620024349 patent/CN2888281Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943395A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Circulating fluidized bed boiler |
| CN102213415A (en) * | 2011-04-28 | 2011-10-12 | 广州迪森热能技术股份有限公司 | Preparation system of biomass fume |
| CN102240614A (en) * | 2011-04-28 | 2011-11-16 | 广州迪森热能技术股份有限公司 | Biomass flue gas cyclone separator |
| CN102777895A (en) * | 2012-07-24 | 2012-11-14 | 武汉和信益科技有限公司 | Semi-tower type medium-temperature separation biomass circulating fluidized bed boiler |
| CN102777895B (en) * | 2012-07-24 | 2015-03-04 | 武汉和信益科技有限公司 | Semi-tower type medium-temperature separation biomass circulating fluidized bed boiler |
| CN109746130A (en) * | 2019-03-23 | 2019-05-14 | 湖北华电襄阳发电有限公司 | Gasification of biomass recirculating fluidized bed whirlwind separator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070411 |
|
| EXPY | Termination of patent right or utility model |