CN103148478B - Multi-hearth fluidized bed furnace - Google Patents
Multi-hearth fluidized bed furnace Download PDFInfo
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- CN103148478B CN103148478B CN201310071846.XA CN201310071846A CN103148478B CN 103148478 B CN103148478 B CN 103148478B CN 201310071846 A CN201310071846 A CN 201310071846A CN 103148478 B CN103148478 B CN 103148478B
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Abstract
The invention discloses a multi-hearth fluidized bed furnace which comprises a furnace body, wherein a hearth is arranged in the furnace body, a furnace door and a feed pipe are arranged at the front side of the furnace body, a heat supply pipe is arranged at the rear side of the furnace body, and a fire baffle wall is arranged at a position close to the rear part in the hearth. The multi-hearth fluidized bed furnace is characterized in that more than three odd main furnace hearths are distributed side by side at the front part of the bottom of the furnace body along left and right direction, a rectangular flying slag bed is arranged behind the main furnace bed and before the fire baffle wall at the bottom of the furnace body, and a slag control wall is arranged between all the main furnace beds and the flying slag bed; a rectangular flying slag bed is arranged behind the fire baffle wall at the bottom of the furnace body, an air blower is arranged at the external part of the furnace body and communicated with one main air bellows through a main air supply pipe, and a vent pipe and a valve are arranged between each two air bellows; and an auxiliary air pipe is further arranged on the main air supply pipe and respectively communicated with a flying slag bed air bellows and a flying ash bed air bellows through a plurality of branch pipes. With the multi-hearth fluidized bed furnace, the problems that the exiting large fluidized bed furnace is difficult to ignite and wide in heat supply amplitude modulation range can be solved, and the multi-hearth fluidized bed furnace is widely used in building materials, chemical and metallurgy industries.
Description
Technical field
The present invention relates to industrial combustion equipment, especially a kind of many sieges fluidized bed furnace.
Background technology
Along with industrial fast development, the maximization of fluidisation combustion apparatus fluidized bed furnace is needed more and more urgent, and one of difficult point that fluidized bed furnace maximizes is the constraint of air distribution plate.Due to the core component in the fluidization technique of same type---the heat force intensity of air distribution plate and every square metre hour quantity of heat production are fixed numbers, along with the increase of heating load, the linear growth of air distribution plate area, when air distribution plate area increases to certain numerical value, igniting and troubleshooting etc. all can be very difficult; In addition by the constraint of incipient fluidization wind speed, the adjusting range of heating load is very little, and general less than 40% is difficult to normal operation.Just someone proposes the fluidized bed furnace of double bed structure for this reason, namely in fluidized bed furnace, two main sieges be arranged side by side are designed, each main siege includes bellows and air distribution plate, as long as single bed operating when double bed fluidized bed furnace needs small size heat supply, and single bed operating very easily causes body of heater to be heated inequality and destroying, user adopts left and right bed alternate run, brings again the problem of operating mode instability, and body of heater still can be subject to certain destruction simultaneously.
Summary of the invention
Object of the present invention will solve fluidized bed furnace maximization ignition difficulties exactly, the problem that heat supply adjusting range is little, provides a kind of many sieges fluidized bed furnace.
Concrete scheme of the present invention is: improve for common fluidized bed furnace, it has body of heater, be burner hearth in body of heater, the front side of body of heater is provided with fire door, feed pipe, rear side is provided with heating tube, and in burner hearth, portion is provided with firebreak rearward, it is characterized in that: be positioned at front portion at bottom of furnace body and be arranged side by side with three and the main siege of above odd number by left and right directions, each main siege includes main air distribution plate and main air case, and main air case is placed in the below of body of heater cushion cap; After bottom of furnace body is positioned at main siege, before firebreak, is provided with one and rectangularly flies slag-bed, this flies slag-bed and includes and fly slag-bed air distribution plate and fly slag-bed bellows, flies slag-bed bellows and is placed in above body of heater cushion cap, at all main sieges and fly to be provided with between slag-bed and control slag wall; After bottom of furnace body is positioned at firebreak, be provided with a rectangular flying dust bed, this flying dust bed includes flying dust bed air distribution plate and flying dust bed bellows, and flying dust bed bellows are placed in the top of body of heater cushion cap; Be provided with air blast in body of heater outside, air blast is communicated with one of them main air case by main feed pipe, between main air case, ventilation duct is housed between two, and on ventilation duct, valve is housed; Main feed pipe is also equipped with secondary airduct, and secondary airduct is communicated with respectively by some arms and flies slag-bed bellows and flying dust bed bellows, and all arms are embedded in bottom of furnace body body of wall, and have adjusting valve on every root arm.
Main feed pipe described in the present invention is communicated with middle main air case.
The length flying slag-bed described in the present invention equals the total length in all main siege left-right situs directions.Slag is flown and the effect that its afterburnt is discharged out of the furnace to ensure to collect.
The length of the bed of flying dust described in the present invention is greater than the total length in all main siege left-right situs directions.Slag is flown and the effect that its afterburnt is discharged out of the furnace to ensure to collect.
The case of main air described in the present invention all adopts isobaric bellows.
In each main siege, residue outlet is provided with in the present invention; Flying respectively to be provided with at least two excessive ash pipes in slag-bed and flying dust bed, every root overflows on ash pipe and material envelope valve is housed.
Operation mechanism of the present invention is: see Fig. 1,2,3,1) only centre main siege 4 is lighted a fire when fluidized bed furnace starts.The main siege 4 in both sides is restarted until whole symmetrical operation after stable; 2) after main siege 4 runs a period of time, under the effect of air-flow, the unburnt high-temperature coal of part and slag leap control slag wall 25 and enter and fly slag-bed 24, fly the high-pressure blast of slag-bed bellows 16 under the effect flying slag-bed air distribution plate 15, continue fluidisation after-flame, and overflow stove from excessive ash pipe 17 and material envelope valve 18; The air quantity that adjustment is applicable to, through the arm 6 through main siege division wall, lowers the temperature for body of wall and cushion cap 27 and the warm-air supply reclaiming heat is flown slag-bed 24 and flying dust bed 23, keeping normal fluidized bed combustion; Main siege 4 climbs over firebreak 22 with the dust-laden high-temperature flue gas flying slag-bed 24 generation under negative-pressure ward, run downwards at a high speed, uncombusted dust thicker in flue gas is gone out by gravity and inertial separation, fall into flying dust bed 8, the thorough afterburnt discharges out of the furnace through the ash pipe 17 that overflows, material envelope valve 18, and the High Temperature Gas after purification extracts heat supply stove out from heating tube 21.
Advantage of the present invention is:
1. the large-scale air distribution plate face being difficult to ignition operation is reduced to 1/3 or 1/5 or less, is convenient to ignition operation, control.
2. the amplitude modulation range of stable heating is large, three main sieges design the regulated quantity of width-adjustable to the 1/3 × 0.4(mono-of maximum heating load)=0.133 ≈ 13.5%, five main siege designs can be adjusted to 1/5 × 0.4=0.08 ≈ 8% of maximum heating load, ensure that stove is the operating mode heat supply significantly adjusting heating load.
3. the quantitative design of main siege is odd number, by the odd number main siege operation work such as arranging between just 1,3,5 during heat supply, ensure that the symmetric uniformity that body of heater is heated, not easily causes cause thermal damage.
4. all arms are passed the partition wall between main siege, both reduced the temperature of cushion cap and partition wall, and ensured the feasibility of many sieges, the heat of recovery is supplied to fly slag-bed and the burning of flying dust bed again.
Accompanying drawing explanation
Fig. 1 is main sectional view of the present invention;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the B-B view of Fig. 1.
In figure: 1-body of heater, 2-feed pipe, 3-burner hearth, the main siege of 4-, 5-fire door, 6-arm, 7-adjusting valve, the secondary airduct of 8-, 9-air blast, 10-air main, the main air distribution plate of 11-, 12-main air case, 13-ventilation duct, 14-residue outlet, 15-flies slag-bed air distribution plate, 16-flies slag-bed bellows, and 17-overflows ash pipe, 18-material envelope valve, 19-flying dust bed bellows, 20-flying dust bed air distribution plate, 21-heating tube, 22-firebreak, 23-flying dust bed, 24-flies slag-bed, and 25-controls slag wall, 26-valve, 27-cushion cap.
Detailed description of the invention
See Fig. 1,2,3, the present invention has body of heater 1, be burner hearth 3 in body of heater 1, the front side of body of heater 1 is provided with fire door 5, feed pipe 2, rear side is provided with heating tube 21, and in burner hearth 3, portion is provided with firebreak 22 rearward, particularly: bottom body of heater 1, be positioned at front portion be arranged side by side with three main sieges 4 by left and right directions, each main siege 4 includes main air distribution plate 11 and main air case 12, and main air case 12 is placed in the below of body of heater cushion cap 27; Be positioned at main siege 4 bottom body of heater 1 after, before firebreak 22, be provided with one and rectangularly fly slag-bed 24, this flies slag-bed 24 and includes and fly slag-bed air distribution plate 15 and fly slag-bed bellows 16, flies slag-bed bellows 16 and is placed in above body of heater cushion cap 27, at all main sieges 4 and fly to be provided with between slag-bed 24 to control slag wall 25; Be positioned at firebreak 22 bottom body of heater 1 after, be provided with a rectangular flying dust bed 23, this flying dust bed 23 includes flying dust bed air distribution plate 20 and flying dust bed bellows 19, and flying dust bed bellows 19 are placed in the top of body of heater cushion cap 27; Be provided with air blast 9 in body of heater 1 outside, air blast 9 is communicated with one of them main air case 12 by main feed pipe, between main air case 12, ventilation duct 13 is housed between two, and on ventilation duct 13, valve 26 is housed; Main feed pipe 10 is also equipped with secondary airduct 8, secondary airduct 8 be communicated with respectively by four arms 6 fly slag-bed bellows 16 and each two arms of flying dust bed bellows 19(), all arms 6 are embedded in bottom body of heater 1 in body of wall, and establish adjusting valve 7 on every root arm 6.
Main feed pipe described in the present embodiment is communicated with middle main air case 12.
The length flying slag-bed 24 described in the present embodiment equals the total length in all main siege 4 left-right situs directions.
The length of the bed of flying dust described in the present embodiment 23 is greater than the total length in all main siege 4 left-right situs directions.
The case of main air described in the present embodiment 12 all adopts isobaric bellows.
In each main siege 4, residue outlet 14 is provided with in the present embodiment; Flying respectively to be provided with two excessive ash pipes 17 in slag-bed 24 and flying dust bed 23, every root overflows on ash pipe 17 and material envelope valve 18 is housed.
The present invention, according to the demand of user's heating load adjustable range and larger number, can design the main sieges of multiple odd number such as 5,7,9.
Claims (6)
1. siege fluidized bed furnace more than a kind, there is body of heater, be burner hearth in body of heater, the front side of body of heater is provided with fire door, feed pipe, rear side is provided with heating tube, and in burner hearth, portion is provided with firebreak rearward, it is characterized in that: be positioned at front portion at bottom of furnace body and be arranged side by side with three and the main siege of above odd number by left and right directions, each main siege includes main air distribution plate and main air case, and main air case is placed in the below of body of heater cushion cap; After bottom of furnace body is positioned at main siege, before firebreak, is provided with one and rectangularly flies slag-bed, this flies slag-bed and includes and fly slag-bed air distribution plate and fly slag-bed bellows, flies slag-bed bellows and is placed in above body of heater cushion cap, at all main sieges and fly to be provided with between slag-bed and control slag wall; After bottom of furnace body is positioned at firebreak, be provided with a rectangular flying dust bed, this flying dust bed includes flying dust bed air distribution plate and flying dust bed bellows, and flying dust bed bellows are placed in the top of body of heater cushion cap; Be provided with air blast in body of heater outside, air blast is communicated with one of them main air case by main feed pipe, between main air case, ventilation duct is housed between two, and on ventilation duct, valve is housed; Main feed pipe is also equipped with secondary airduct, and secondary airduct is communicated with respectively by some arms and flies slag-bed bellows and flying dust bed bellows, and all arms are embedded in bottom of furnace body body of wall, and have adjusting valve on every root arm.
2. one many sieges fluidized bed furnace according to claim 1, is characterized in that: described main feed pipe is communicated with middle main air case.
3. one many sieges fluidized bed furnace according to claim 1, is characterized in that: described in fly slag-bed length equal the total length in all main siege left-right situs directions.
4. one many sieges fluidized bed furnace according to claim 1, is characterized in that: the length of described flying dust bed is greater than the total length in all main siege left-right situs directions.
5. one many sieges fluidized bed furnace according to claim 1, is characterized in that: described main air case all adopts isobaric bellows.
6. one many sieges fluidized bed furnace according to claim 1, is characterized in that: in each main siege, be provided with residue outlet; Flying respectively to be provided with at least two excessive ash pipes in slag-bed and flying dust bed, every root overflows on ash pipe and material envelope valve is housed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310071846.XA CN103148478B (en) | 2013-03-07 | 2013-03-07 | Multi-hearth fluidized bed furnace |
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| CN201310071846.XA CN103148478B (en) | 2013-03-07 | 2013-03-07 | Multi-hearth fluidized bed furnace |
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| CN103148478A CN103148478A (en) | 2013-06-12 |
| CN103148478B true CN103148478B (en) | 2015-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108224772A (en) * | 2018-02-06 | 2018-06-29 | 湖南三创富泰环保材料股份有限公司 | A kind of dual-purpose boiling type hot-blast stove of novel bottle coal and control method |
| CN109340742B (en) * | 2018-11-27 | 2024-04-30 | 湖北金炉节能股份有限公司 | Novel fluidized bed flue gas furnace |
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| CN2046976U (en) * | 1988-12-31 | 1989-11-01 | 华中理工大学 | High-temp. fume fluidised-bed furnace |
| US5181481A (en) * | 1991-03-25 | 1993-01-26 | Foster Wheeler Energy Corporation | Fluidized bed combustion system and method having multiple furnace sections |
| CN2277484Y (en) * | 1997-03-31 | 1998-04-01 | 魏文彦 | Heating and steam generating fiuidized bed furnace |
| CN2896027Y (en) * | 2006-04-05 | 2007-05-02 | 袁朝阳 | Strong hot-air double-hearth high-temperature boilling furnace |
| CN2929481Y (en) * | 2006-07-29 | 2007-08-01 | 黄石市建材节能设备总厂 | Three bed boiling furnace |
| CN101776391A (en) * | 2010-01-12 | 2010-07-14 | 武汉科技大学 | Fluidized bed furnace used for vanadium extraction and decarbonization of stone coal |
| CN101949535A (en) * | 2010-09-28 | 2011-01-19 | 哈尔滨工业大学 | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof |
| CN203147744U (en) * | 2013-03-07 | 2013-08-21 | 黄石市建材节能设备总厂 | Multi-hearth boiling furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH076749B2 (en) * | 1986-03-31 | 1995-01-30 | 川崎重工業株式会社 | Fluidized bed cooler start control device |
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2013
- 2013-03-07 CN CN201310071846.XA patent/CN103148478B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046976U (en) * | 1988-12-31 | 1989-11-01 | 华中理工大学 | High-temp. fume fluidised-bed furnace |
| US5181481A (en) * | 1991-03-25 | 1993-01-26 | Foster Wheeler Energy Corporation | Fluidized bed combustion system and method having multiple furnace sections |
| CN2277484Y (en) * | 1997-03-31 | 1998-04-01 | 魏文彦 | Heating and steam generating fiuidized bed furnace |
| CN2896027Y (en) * | 2006-04-05 | 2007-05-02 | 袁朝阳 | Strong hot-air double-hearth high-temperature boilling furnace |
| CN2929481Y (en) * | 2006-07-29 | 2007-08-01 | 黄石市建材节能设备总厂 | Three bed boiling furnace |
| CN101776391A (en) * | 2010-01-12 | 2010-07-14 | 武汉科技大学 | Fluidized bed furnace used for vanadium extraction and decarbonization of stone coal |
| CN101949535A (en) * | 2010-09-28 | 2011-01-19 | 哈尔滨工业大学 | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof |
| CN203147744U (en) * | 2013-03-07 | 2013-08-21 | 黄石市建材节能设备总厂 | Multi-hearth boiling furnace |
Non-Patent Citations (1)
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Effective date of registration: 20230403 Address after: No.16, Wangsheng Avenue East, Jinshan sub district office, Huangshi City, Hubei Province Patentee after: HUBEI JINLU ENERGY SAVING CO.,LTD. Address before: No. 161-1, Hangzhou West Road, Huangshi City, Hubei Province Patentee before: Huangshi Building Material Energy Saving Equipment Factory |