CN106568081A - Novel burner - Google Patents

Abstract

The invention discloses a novel burner in the field of burners. The novel burner comprises a center pipe, an adjusting air pipe, a cyclone pipe, a coal air pipe and an outer air pipe which are sleeved together from inside to outside. An oil gun is arranged in the center pipe in a penetrating mode. An oil gun channel is formed between the oil gun and the center pipe. A center air channel is formed between the center pipe and the adjusting air pipe. A cyclone channel is formed between the adjusting air pipe and the cyclone pipe. A coal air channel is formed between the cyclone pipe and the coal air pipe. An outer air channel is formed between the coal air pipe and the outer air pipe. A plurality of cyclone plates are evenly arranged on the periphery of the front end of the adjusting air pipe. Air outlet channels are formed between the cyclone plates. The cyclone plates are arranged obliquely along the periphery of the adjusting air pipe in an arc shape. The adjusting air pipe can slide along the axial direction of the center pipe. According to the novel burner, the air outlet angle of the cyclone air can be adjusted, the application range is wider, and the novel burner can be used in production of cement products.

Description

A kind of novel burner

Technical field

The present invention relates to a kind of burner, more particularly to a kind of coal burner.

Background technology

Rotary kiln coal burner is the burner in the clinker production lines such as cement, aluminium oxide, activated calcium, and structure is most It is early for single air channel, after introduce three air channels and four-channel coal burner by external（Air channel wind not Wei outer direct current wind, inward eddy wind, Coal wind and centre wind, at home representational imported product have German Hong Bao, primary power turtledove this, France skin rad, Denmark Smith）, domestic cement equipment manufacturing enterprise and cement design and research institute also can produce through digesting and assimilating, and four air channels are than three wind Many one centre winds in road, each air channel volume adjustment generally relies on valve opening to adjust.Due to during calcined by rotary kiln grog both Need very high temperature, it is also desirable to form good kliner coating to protect kiln cylinder body, when fuel performance changes, need to strengthen or Reducing wind coal mixed can only become big or diminish to adjust outer direct current wind or inward eddy wind by valve opening, due to exit face Product and eddy flow angle cannot change simultaneously, and swirl strength and eject momentum also can change with valve adjustment, it is difficult to meet Calcining in kiln.Conventional burners due to eddy flow angle and the cross-section area of nozzle cannot on-line tuning simultaneously, when ature of coal changes Operation is passive, affects the yield and quality of grog, causes to stop production under serious conditions.

Burner acts as an ejector in rotary kiln, its objective is from the high temperature secondary wind of cooler （1000°-1250°）In being introduced into flame, make coal dust as close as the burning of kiln midline, the momentum for spraying air-flow is to determine The important parameter that flame is constituted, it is expressed as the percentage ratio of primary air（The percentage ratio of theoretical air）With taking advantage of for spouting velocity Product, if spouting velocity gradually increases, that time, the ratio of air then can reduce, primary air consumption typically between 6%-8%, Corresponding combustion momentum is about 150-190%m/s, and higher momentum means mixing, shorter flame at higher temperature faster, Because good flame is constituted kiln can be made to operate under low-down excess air in kiln, it is without forming substantial amounts of co therefore most Pipe flame temperature is higher, and it produces burners of the NOX also more than, excess air low well below those flame momentums.

In order to solve this problem, usual method is passively to stop kiln backed off after random burner to change parts, such as changes exogenous wind Cylinder or cyclone, in order to change with wind ratio and swirl strength.Because rotary kiln clinker production capacity is big, kiln temperature is high （Clinker needs 1750 ° of high temperature, others to be also required to more than 1000 ° of temperature）, equipment is exited in kiln changes afterwards zero Part also needs to wait the castable refractory knocked out again after cooling outside burner, and having changed after parts will also again lay cast Material, then conserves again a period of time, and this process needs the time of minimum one week, and the loss for thus causing is huge（It is now ripe The all very big 2500t/d～10000t/d of the material daily output）.

It is exactly in addition to change whole equipment, it is also very uneconomical.

The content of the invention

It is an object of the invention to provide a kind of novel burner so that Whirl deposite tank air outlet angle is adjustable, the scope of application is more Extensively.

The object of the present invention is achieved like this：A kind of novel burner, including the center being set in together from inside to outside Pipe, regulation airduct, tornadotron, coal airduct and outer airduct, are provided through oil gun, oil gun and central air hose in the central canal Between form oil gun passage, the central canal and to adjust and form center wind duct between airduct, adjust between airduct and tornadotron Cyclone channel is formed, coal wind duct is formed between tornadotron and coal airduct, exogenous wind passage, institute are formed between coal airduct and outer airduct The front end periphery for stating regulation airduct is evenly arranged some cyclone plates, and air-out groove is formed between cyclone plate, and the cyclone plate is in Arc is in tilted layout along airduct periphery is adjusted, and the regulation airduct can slide axially along central canal.

During present invention work, because cyclone plate is arc and is in tilted layout, this allows for cyclone plate in air outlet and rotation Airduct inwall contact position is different, and the direction that may result in air-out is different, when needing to adjust Whirl deposite tank spray angle, only needs control System adjusts airduct and axially moves, you can realize the regulation of Whirl deposite tank air outlet angle, and compared with prior art, the present invention's is beneficial Effect is, because the fire coal in different mining areas is unable to complete stability when mix and match is used, it is therefore desirable to adjust air quantity and use Monsoon intensity can only stop production replacing accessory and come real to change air-out area and air outlet angle to adapt to ature of coal, relative to ordinary burner Existing, the present invention need to only pass through the flexible regulation for being capable of achieving air-out area and air outlet angle of control and regulation airduct, so as to ensure that Ature of coal is obtained fully burning, substantially increases production efficiency, reduces production cost.The present invention can be used for manufacture of cement manufacture In.

Can fully burn when mixing for the ature of coal for being further ensured that different producing area, the angle change of the wind groove is 17 °- 60 °, the angle of air-out notch is 17 °, and the angle of air-out slot tail is 60 °.

In order that the exogenous wind passage air-out of center air channel is more smooth, the air outlet of the center air channel and exogenous wind passage It is provided with orifice plate.

In order that the movement for adjusting airduct is convenient, the central canal afterbody periphery is provided with base, solid on base Surely the end for having Worm gear feed screw component, the screw mandrel is hinged on connecting plate, and connecting plate is fixed on the afterbody for adjusting airduct.Pass through Adjusting worm gear wheel drives screw mandrel to axially move, so as to realize adjusting the axial movement of airduct.

In order that air intake is convenient, the rear portion for adjusting airduct is connected with bypass centre wind blast pipe, the rotation The rear portion of airduct is connected with bypass whirlwind blast pipe, and the rear portion of the outer airduct is connected with bypass exogenous wind blast pipe, the center Wind blast pipe, whirlwind blast pipe, exogenous wind blast pipe are connected on total blast pipe, and junction is provided with regulating valve, the coal wind Pipe rear portion is connected to the bypass coal wind blast pipe being obliquely installed, and on coal wind blast pipe inspection door is provided with.

In order that the present invention is easier for installation, the periphery of the outer airduct is arranged beyond air outlet, outside outer airduct Zhou Qianduan is cast with castable, and the periphery rear end of outer airduct is provided with suspension bracket.The periphery of outer airduct is arranged beyond air outlet so as to There is cigarette effect.

Description of the drawings

Fig. 1 is schematic structural view of the invention.

Fig. 2 is enlarged drawing at A in Fig. 1.

Fig. 3 is cyclone plate deployed configuration schematic diagram in the present invention.

Fig. 4 is end face structural representation in the present invention.

Wherein, 1 oil gun, 2 central canals, 3 regulation airducts, 4 tornadotrons, 5 coal airducts, 6 outer airducts, 7 castables, 8 cyclone plates, 801 wind grooves, 9 suspension brackets, 10 coal wind blast pipes, 10a inspection doors, 11 exogenous wind blast pipes, 12 regulating valves, 13 whirlwind blast pipes, 14 adjust Section valve, 15 centre wind blast pipes, 16 regulating valves, 17 total blast pipes, 18 Worm gear feed screw components, 19 bases, 20 connecting plates.

Specific embodiment

A kind of novel burner as Figure 1-4, including the center shop 2 being set in together from inside to outside, adjusts airduct 3rd, oil gun 1 is provided through in tornadotron 4, coal airduct 5 and outer airduct 6, center shop 2, is formed between oil gun 1 and central air hose The passage of oil gun 1, between center shop 2 and regulation airduct 3 center wind duct is formed, and to be adjusted and form whirlwind between airduct 3 and tornadotron 4 Passage, forms coal wind duct between tornadotron 4 and coal airduct 5, exogenous wind passage is formed between coal airduct 5 and outer airduct 6, adjusts wind The front end periphery of pipe 3 is evenly arranged some cyclone plates 8, and air-out groove 801, the angle of air-out groove 801 are formed between cyclone plate 8 Change turns to 17 ° -60 °, and the angle of the oral area of air-out groove 801 is 17 °, and the angle of the afterbody of air-out groove 801 is 60 °, and cyclone plate 8 is curved It is in tilted layout along the periphery of airduct 3 is adjusted, the afterbody periphery of center shop 2 is provided with base 19, and Worm gear feed screw group is fixed with base 19 Part 18, the end of screw mandrel is hinged on connecting plate 20, and connecting plate 20 is fixed on the afterbody for adjusting airduct 3, center air channel and exogenous wind The air outlet of passage is provided with orifice plate, and the rear portion for adjusting airduct 3 is connected with bypass centre wind blast pipe 15, tornadotron 4 Rear portion is connected with bypass whirlwind blast pipe 13, and the rear portion of outer airduct 6 is connected with bypass exogenous wind blast pipe 11, centre wind blast pipe 15th, whirlwind blast pipe 13, exogenous wind blast pipe 11 are connected on total blast pipe 17, and junction is provided with regulating valve 12, regulating valve 14th, regulating valve 16, the rear portion of coal airduct 5 is connected to the bypass coal wind blast pipe 10 being obliquely installed, and on coal wind blast pipe 10 inspection is provided with A 10a is looked into, the periphery of outer airduct 6 is arranged beyond air outlet, and the periphery front end of outer airduct 6 is cast with castable 7, outer airduct 6 Periphery rear end is provided with suspension bracket 9.

During normal work of the present invention, by total blast pipe 17, respectively toward adjusting, airduct 3, whirlwind is closed, outer airduct 6 is passed through sky Gas, by coal airduct 5 coal wind is passed through, and when air passes through cyclone, is rotated, and after projecting from spout rotating jet is formed, Using rotating jet, can be formed with beneficial to the high temperature gases recirculating area for catching fire, and air-flow is mixed strongly, when breeze airflow possesses Certain heat simultaneously to reach begun to after ignition temperature and catches fire, when needing to adjust Whirl deposite tank injection angle, because cyclone plate 8 is Arcuate structure, and the periphery for being evenly arranged in regulation airduct 3 is inclined, this end for allowing for tornadotron 4 is diverse location When cyclone plate 8 is contacted, the angle that Whirl deposite tank is projected is different, the worm gear on rotation of worm gear screw component 18 is only needed, by worm gear Rotate and drive screw mandrel to axially move, outwards ejection tornadotron 4, realizes the regulation of Whirl deposite tank injection angle, to ensure combustion zone It is energy maximum region in domain, improves efficiency of combustion.

It is selective to the source of fuel due to the needs of cement plant purchase cost, same ore deposit point can't be adopted, more Have the coal in 7-8 mining area, cause fire coal quality also have very big difference, although mixing after each mining area fire coal There is a problem of the tail-off time, blend proportion is also impossible to complete stability, consequently, it is possible to the coal of heterogeneity is in burning-point and after-flame Fluctuation occurs on time, at this time needs by adjustment air quantity and with monsoon intensity to adapt to ature of coal, ordinary burner can only Accessory is changed by stopping production to change air-out area and air outlet angle to realize, can otherwise cause product due to the decay of Calcine Strength And the decline of yield and quality is caused, serious meeting affects kiln lining, so as to bring very big loss to production division, on the present invention needs When stating problem, it is only necessary to the position movement of airduct 3 will be adjusted, it is possible to realize the air outlet angle of Whirl deposite tank and the change of air-out area Change, so as to rapidly adapt to corresponding ature of coal, it is ensured that the flame intensity of calcining in kiln, bring great convenience to production division, More therefore avoid the abnormal loss for bringing of production.

Above-described embodiment is the invention is not limited in, on the basis of technical scheme disclosed by the invention, the skill of this area Art personnel are according to disclosed technology contents, it is not necessary to which performing creative labour just can make one to some of which technical characteristic A little to replace and deform, these are replaced and deform within the scope of the present invention.

Claims (6)

1. a kind of novel burner, it is characterised in that including the central canal being set in together from inside to outside, adjust airduct, whirlwind Pipe, coal airduct and outer airduct, are provided through oil gun in the central canal, oil gun is formed between oil gun and central air hose and is led to Road, between the central canal and regulation airduct center wind duct is formed, and to be adjusted and form cyclone channel between airduct and tornadotron, is revolved Coal wind duct is formed between airduct and coal airduct, exogenous wind passage is formed between coal airduct and outer airduct, before the regulation airduct End periphery is evenly arranged some cyclone plates, and the cyclone plate is curved to be in tilted layout along adjusting airduct periphery, cyclone plate it Between form out radial belt angle wind groove, the regulation airduct can slide axially along central canal.

2. a kind of novel burner according to claim 1, it is characterised in that the angle change of the wind groove is 17 °- 60 °, the angle of air-out notch is 17 °, and the angle of air-out slot tail is 60 °.

3. a kind of novel burner according to claim 1 and 2, it is characterised in that the center air channel and exogenous wind passage Air outlet be provided with orifice plate.

4. a kind of novel burner according to claim 1 and 2, it is characterised in that install the central canal afterbody periphery There is base, Worm gear feed screw component is fixed with base, the end of the worm screw is hinged on connecting plate, and connecting plate is fixed on regulation The afterbody of airduct.

5. a kind of novel burner according to claim 1 and 2, it is characterised in that the rear portion connection of the regulation airduct The rear portion for having bypass centre wind blast pipe, the tornadotron is connected with bypass whirlwind blast pipe, the rear portion connection of the outer airduct There is bypass exogenous wind blast pipe, the centre wind blast pipe, whirlwind blast pipe, exogenous wind blast pipe are connected on total blast pipe, are connected Place is provided with regulating valve, and the coal airduct rear portion is connected to the bypass coal wind blast pipe being obliquely installed, and arranges on coal wind blast pipe There is inspection door.

6. a kind of novel burner according to claim 1 and 2, it is characterised in that the periphery of the outer airduct exceeds Air port is arranged, and the periphery front end of outer airduct is cast with castable, and the periphery rear end of outer airduct is provided with suspension bracket.