CN2163941Y - Power-saving high-temp flue gas fluidized-bed combustion furnace - Google Patents
Power-saving high-temp flue gas fluidized-bed combustion furnace Download PDFInfo
- Publication number
- CN2163941Y CN2163941Y CN 93220478 CN93220478U CN2163941Y CN 2163941 Y CN2163941 Y CN 2163941Y CN 93220478 CN93220478 CN 93220478 CN 93220478 U CN93220478 U CN 93220478U CN 2163941 Y CN2163941 Y CN 2163941Y
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- China
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- air
- guide plate
- distribution device
- blast cap
- heater
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Abstract
The utility model belongs to a power-saving high-temperature fume boiling stove, comprising an air supply device and a stove body. The air supply device comprises a blower (7), an air box (8), and an air distribution device (4). The stove body is divided into a stove chamber (3) and a U-shaped combustion chamber (5). A coal inlet opening (1) and a fume outlet (6) are arranged on the stove body (2). The air distribution device (4) adopt the guide structure of a negative arc surface. The declining air blowing hole (13) of an air cap (12) is connected in a tangential mode with the negative arc surface of a guide plate (11). The utility model has the advantages of non-dead area, small air resistance, high fluidization quality of charge, full boiling for fluidization, small air speed, power reduction of a blower, obvious effect of power saving, low cost, easy implementation, popularization and application. The guide plate (11) adopts refractory concrete for molding.
Description
The utility model relates to a kind of industrial fluidized bed furnace, and the high-temperature flue gas fluidized bed furnace particularly economizes on electricity.
The basic structure of existing industrial fluidized bed furnace is, air supply device and body of heater combining structure, air supply device comprises blower fan, bellows and air-distribution device, air-distribution device connects by bellows and blower fan, body of heater is made of burner hearth and combustion chamber two parts, and arrangement apparatus has coal feed point and exhanst gas outlet on the body of heater below burner hearth, slag notch and cold cinder notch are arranged under the body of heater, and air-distribution device polyphyly planar guide plate adds cap structure.The mechanism of this boiling furnace combustion is, the pressure-air that produces by the blower fan bellows of flowing through, air-distribution device is admitted in the burner hearth of body of heater, it overcomes the air feed resistance, gravity with furnace charge, make furnace charge accelerated motion in body of heater, be fluidised to boiling, make its violent burning, and take away the heat of generation, release from exhanst gas outlet through the combustion chamber,, make furnace charge be able to abundant burning in order to guarantee " firmly " characteristic of blast, usually adopt air door to transfer the pressure of air stream, rather than adopt to adjust the pressure that rotation speed of fan is transferred air stream, the high-power blower of fluidized bed furnace configuration is always according to its rated power work like this, thereby economize on electricity has just become an improved problem of urgent need.Air-distribution device since the structures shape of itself its resistance maximum in air supply device, be again the key component of fluidisation and boiling quality simultaneously.Optimize its structure the quality of furnace charge fluidisation is improved, reach the wind speed that is fluidised to boiling and can reach and reduce power consumption and reduce the elutriation of furnace charge and carry secretly, further improve the efficient of furnace charge burning and reduce.The air-distribution device that existing fluidized bed furnace adopts mostly is flat board and adds blast cap formula structure, dashes for making the furnace charge particle that is deposited between inner of the boiler chamber wall and blast cap, and the wind pushing hole on the blast cap is generally to 5 °～15 ° of declivities.Like this; just make the wind direction of wind pushing hole become 85 °～75 ° angle with furnace charge gravity; the high-speed air flow that is ejected by wind pushing hole is impacting furnace charge; the furnace wall; behind the contiguous blast cap in burner hearth under the constraint of wall and furnace bottom upwards to overcome the gravity of furnace charge; make furnace charge be fluidised to boiling at the volley; reach clean-burning requirement; the weak point of the fluidized bed furnace of this structure is: 1; wind pushing hole bottom and furnace bottom on the blast cap are formed with the triangle dead band; and the furnace charge particle that rests in the dead band must be got excited by the high pressure air flow that the wind pushing hole that is close on the blast cap eject; because the furnace charge particle that rests on the dead band side also can produce downward component because of the effect of high pressure air flow, increased the requirement of the high pressure air flow speed that the wind pushing hole on the contiguous blast cap ejects like this.When 2, high pressure air flow commutates, all do not have the acute angle of transition arc in body of heater, make coefficient of partial resistance bigger by the furnace wall that play the guiding role, guide plate, blast cap etc., cause air loss big, for guaranteeing specified blast, the power of blower fan must strengthen, and power consumption also just increases.
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, to propose economize on electricity high-temperature flue gas fluidized bed furnace.
Technical solution of the present utility model is, form by air supply device and body of heater, air supply device comprises blower fan, bellows and air-distribution device, air-distribution device connects by bellows and blower fan, coal feed point is arranged on the body of heater, exhanst gas outlet, slag notch and cold cinder notch are arranged under the body of heater, body of heater is divided into burner hearth and U-shaped combustion chamber two parts, air-distribution device comprises guide plate, thermal insulation layer, cloth wind base plate and the blast cap that has wind pushing hole is characterized in that, the air-distribution device that is contained in lower furnace portion adopts negative arc face guide plate and blast cap fit structure.
The guide plate of negative arc face adopts heat resistance concrete to be shaped, and blast cap is evenly distributed in therebetween.
The negative arc face of the inclination angle of the wind pushing hole on the blast cap and guide plate connects.
Operation principle of the present utility model is, high pressure air flow by the blower fan generation, through bellows, blast cap, in wind pushing hole is spurted into the burner hearth of body of heater, the air stream of high speed and high pressure will form the air-flow that furnace charge is risen along the guide plate that the incline direction of wind pushing hole is close to negative arc face (spill), because guide plate concavity cambered surface, resistance is little, no dead band, the high speed and high pressure air stream that is sprayed into by wind pushing hole so all can produce elevate a turnable ladder power to the furnace charge particle of different-diameter, thereby the utility model is to the wind speed and pressure requirement reduction of furnace charge boiling, wind speed reduces like this, the benefit of thereupon bringing is to have reduced the elutriation of furnace charge and carried certain efficiency of combustion that has also just improved furnace charge secretly.Because enter high speed and high pressure air stream in the burner hearth and be the guide plate guiding conversion direction through the negative arc face, local resistance is little, air loss is little, thereby has optimized the quality of furnace charge fluidisation.
The utility model has the advantages that air-distribution device adopts the guide plate and the blast cap fit structure of negative arc face, both improved the quality of furnace charge fluidisation, reduced the boiling wind speed, the power requirement to blower fan reduces simultaneously, thereby has significantly reduced power consumption.Adopt heat resistance concrete to be shaped by guide plate owing to the negative arc face, reduce the cost of air-distribution device and difficult link is installed, because the cambered surface of guide plate is big, high pressure air flow when commutation loss is little, has reduced the furnace charge elutriation and carries secretly, thereby improved the efficiency of combustion of furnace charge, the inclination angle of wind pushing hole is downward, the guide plate of negative arc face is spill, when this structure makes blowing out, can not make furnace charge pour in down a chimney formation leakage ash and clogging in the wind pushing hole because of furnace charge produces downward component at positive bevel.The utility model has reached its intended purposes through overtesting, has good practical value, and power savings is obvious, is suitable for and applies.
Fig. 1, basic structure schematic diagram of the present utility model;
Fig. 2, the air-distribution device generalized section that the utility model adopts;
Fig. 3, the air-distribution device generalized section that existing fluidized bed furnace adopts.
Embodiment of the present utility model is described below with reference to the accompanying drawings.
As Fig. 1, shown in Figure 2, the utility model is made up of air supply device and body of heater 2, and air supply device comprises blower fan 7, bellows 8 and air-distribution device 4, and air-distribution device 4 comprises guide plate 11, thermal insulation layer 14, cloth wind base plate 15 and the blast cap 12 that has a plurality of wind pushing holes 13, thermal insulation layer 14 is between guide plate 11 and cloth wind base plate 15, blast cap 12 is evenly distributed in cloth wind flat board 15, on thermal insulation layer 14 and the guide plate 11, and is integrated with its edge, guide plate 11 is a negative arc face structure, is spill downwards.The negative arc face of guide plate 11 and the inclination angle of wind pushing hole 13 connect, and preferably tangentially connect.Do like this in order that reduce windage, elimination dead band as far as possible.Blast cap 12 outer surface of cupular part are convex.Air-distribution device 4 connects by bellows 8 and blower fan 7, and coal feed point 1, exhanst gas outlet 6 are arranged on the body of heater 2, and body of heater has slag notch 9, cold cinder notch 10 for 2 times, body of heater 2 is divided into burner hearth 3 and U-shaped combustion chamber 5 two parts, made by refractory material, U-shaped combustion chamber 5 communicates with burner hearth 3, another termination flue outlet 6.Air-distribution device 4 adopts the guide plate 11 and blast cap fit structure of negative arc face, because of the guide plate 11 usefulness heat resistance concretes shaping of negative arc face, and makes processing simple, and is easy for installation.Air-distribution device 4 is installed burner hearth 3 bottoms.The utility model finds that through overtesting the coupling power of motor of fluidized bed furnace aerofoil has reduced by 40%, and air-introduced machine power with matching reduces by 32%, is the test data that the utility model and existing product PZGF115 high-boiling stove compare below:
| Type | Heat capacity | Critical fluidising air velocity | Full boiling wind speed | Fluidization quality | Carry secretly and elutriation | Power of fan | Air-introduced machine power |
| PZGF115 | 100 ten thousand kilocalories hour | 0.6 meter second | 1.46 meter second | Relatively poor | More | 18.5KW | 22KW |
| The utility model | 100 ten thousand kilocalories hour | 0.6 meter second | 0.89 meter second | Good | Less | 11KW | 15KW |
According to the test data initial estimate, the utility model is if apply, and every annual economize on electricity nearly 100,000 of stove is spent.Has very big prospect.
As shown in Figure 3, the air-distribution device that existing product PZGF type fluidized bed furnace adopts, the guide plate 11 that adopts is a plate armature, between blast cap 12 and flat guide plate 11, just formed the triangle dead band like this, cause windage to strengthen, thereby the lifting of furnace charge needs enough high-voltage high-speed air stream and guarantees, the power consumption of this product is difficult to reduce like this.
Claims (4)
1, economize on electricity high-temperature flue gas fluidized bed furnace, form by air supply device and body of heater (2), air supply device comprises blower fan (7), bellows (8) and air-distribution device (4), air-distribution device (4) connects by bellows (8) and blower fan (7), coal feed point (1) is arranged on the body of heater (2), exhanst gas outlet (6), slag notch (9) and cold cinder notch (10) are arranged under the body of heater (2), body of heater (2) is divided into burner hearth (3) and U-shaped combustion chamber (5) two parts, air-distribution device (4) comprises guide plate (11), thermal insulation layer (14), cloth wind base plate (15) and the blast cap (12) that has wind pushing hole (13), it is characterized in that air-distribution device (4) has adopted the guide plate (11) and blast cap (12) fit structure of negative arc face.
2, economize on electricity high-temperature flue gas fluidized bed furnace according to claim 1 is characterized in that, the guide plate of negative arc face (11) adopts heat resistance concrete to be shaped, and blast cap (12) is evenly distributed in therebetween.
3, economize on electricity high-temperature flue gas fluidized bed furnace according to claim 1 is characterized in that, the inclination angle of the wind pushing hole (13) on the blast cap (12) and the negative arc face of guide plate (11) connect.
4, economize on electricity high-temperature flue gas fluidized bed furnace according to claim 1 is characterized in that, the inclination angle of the wind pushing hole (13) on the blast cap (12) and the negative arc face of guide plate (11) tangentially connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93220478 CN2163941Y (en) | 1993-07-31 | 1993-07-31 | Power-saving high-temp flue gas fluidized-bed combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93220478 CN2163941Y (en) | 1993-07-31 | 1993-07-31 | Power-saving high-temp flue gas fluidized-bed combustion furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2163941Y true CN2163941Y (en) | 1994-05-04 |
Family
ID=33799613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93220478 Expired - Fee Related CN2163941Y (en) | 1993-07-31 | 1993-07-31 | Power-saving high-temp flue gas fluidized-bed combustion furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2163941Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945171A (en) * | 2019-03-20 | 2019-06-28 | 林明强 | A kind of particulate fluidization arc wind circulating fluidized bed boiler for lignite particle elutriation |
| CN112361367A (en) * | 2020-12-10 | 2021-02-12 | 湖北金炉节能股份有限公司 | High-temperature fluidized furnace |
-
1993
- 1993-07-31 CN CN 93220478 patent/CN2163941Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945171A (en) * | 2019-03-20 | 2019-06-28 | 林明强 | A kind of particulate fluidization arc wind circulating fluidized bed boiler for lignite particle elutriation |
| CN112361367A (en) * | 2020-12-10 | 2021-02-12 | 湖北金炉节能股份有限公司 | High-temperature fluidized furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |