CN201706487U - Anthracite powdered coal burner for a rotary kiln - Google Patents

Anthracite powdered coal burner for a rotary kiln Download PDF

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Publication number
CN201706487U
CN201706487U CN2010202108446U CN201020210844U CN201706487U CN 201706487 U CN201706487 U CN 201706487U CN 2010202108446 U CN2010202108446 U CN 2010202108446U CN 201020210844 U CN201020210844 U CN 201020210844U CN 201706487 U CN201706487 U CN 201706487U
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CN
China
Prior art keywords
wind
coal
burner
axial flow
airduct
Prior art date
Application number
CN2010202108446U
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Chinese (zh)
Inventor
凌中亚
蔡长明
吴敬
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襄樊大力机电技术有限公司
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Priority to CN2010202108446U priority Critical patent/CN201706487U/en
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Publication of CN201706487U publication Critical patent/CN201706487U/en

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Abstract

The utility model relates to an anthracite powdered coal burner for a rotary kiln, using the anthracite powdered coal as the fuel, which mainly solves the problems of the prior powdered coal burner for the rotary kiln that the burner only burns the bituminous coal and the cost is high. An axial flow wind channel, an eddy wind channel, a coal wind channel, a center wind channel and an ignition channel are arranged on a nozzle head of the burn in turn from outside to inside and outlets of the five channels are inclined outlets and a center wind end cover is arranged on the outlet of the center wind channel and a powdered coal inner spray head is arranged on the outlet of the coal wind channel; the outlets of the eddy wind channel and the axial flow wind channel are respectively provided with a cone swirler, an eddy wind outer tube and an axial flow wind outer tube and a flame holding cage is arranged on the outlet at the outer side of the axial flow wind outer tube; the burner main body is respectively provided with axial flow wind, eddy wind and coal wind outlet cross-section adjustment devices and a center wind end cover plate adjustment device; a combustion-supporting wind pipe is arranged on the burner main body. The anthracite powdered coal burner has features of utilization of anthracite and inferior coal, complete burning, energy saving and consumption reducing.

Description

Rotary kiln anthracite coal burner
Technical field
The utility model relates to a kind of rotary kiln, relates to a kind of rotary kiln burner that acts as a fuel with the anthracite coal dust specifically.
Background technology
At present, rotary kiln is a lot of with the burner fuel kind, as coal dust, natural gas, coke-stove gas, blast furnace gas or the like.The used coal dust of the used coal burner of rotary kiln is generally bituminous coal.Because the coal resource skewness of China weighing apparatus, and anthracite occupies bigger proportion in the coal resource, and price is low than bituminous coal, and domestic rotary kiln burner commonly used is can only the bituminous coal coal dust can not burn anthracite coal dust so cost height at present.
Summary of the invention
The purpose of the present utility model is, a kind of rotary kiln burner that uses the anthracite coal dust to act as a fuel that proposes at above-mentioned deficiency.
Technical solution of the present utility model is: rotary kiln with the feature of anthracite coal burner is: 1. the nozzle head of burner is provided with axial flow wind from outside to inside successively, eddy flow wind, coal wind, center wind and five passage A of igniting, B, C, D, E, the outlet of five passages is inclined exit, in the ignition channel E centering wind passage D, the exit of central passage D is provided with center wind end casing, the exit of coal wind duct C is provided with shower nozzle in the coal dust, eddy flow wind and axial flow wind channel B, the exit of A is respectively equipped with swirl cone, eddy flow wind urceolus and axial flow wind urceolus, the exit in the axial flow wind urceolus outside is provided with the flame cover; 2. on burner body, be respectively equipped with axial flow wind, eddy flow wind and coal wind outlet adjusting device, and center wind end casing adjusting device; 3. on burner body, be provided with combustion-supporting airduct.
Be connected with the atomizer conduit on the center wind end casing in the exit of the center wind duct D described in the technical solution of the present utility model, shower nozzle connects with pipe employing groove mode in the coal wind in the coal dust of coal wind duct C; The cyclone of eddy flow wind channel B adopts the groove mode to connect with the coal dust outer tube; The eddy flow wind urceolus of axial flow wind passage A adopts the groove formula to connect with eddy flow wind outer tube, and the axial flow wind urceolus of axial flow wind passage A adopts flange to connect with outer airduct; Axial flow wind urceolus adopts trapezoidal thread to connect with holding together the flame cover, and the port of export of shower nozzle, swirl cone, eddy flow wind urceolus and axial flow wind urceolus is inclined exit in the coal dust.
The cyclone of the burner nozzle head described in the technical solution of the present utility model is a swirl cone that is processed with spiral grooves outside on the outer surface of cone, and the head cone diameter of swirl cone dwindles gradually along airflow direction.
Axial flow wind described in the technical solution of the present utility model and eddy flow wind outlet adjuster are FlexbleJoints that has four flanges, two flanges are separately fixed at the bellows both sides and connect with sylphon seal, other two flanges are located at the outside of above-mentioned two flanges respectively, by two parallel longitudinal ends that are connected in four flanges of screw rod; Axial flow wind cross section outlet regulating device is that two flanges outside the compensator are connected with outer airduct and eddy flow wind outer tube respectively; Eddy flow wind outlet adjuster is that the flange with the compensator two ends connects with eddy flow wind outer tube and coal wind outer tube respectively.
Coal wind outlet adjusting device described in the technical solution of the present utility model and center wind end casing adjusting device are to be made up of two flanges and two screw rods respectively, two parallel longitudinal ends that are connected in two flanges of screw rod; Two flanges of coal wind outlet adjusting device are separately fixed on coal wind outer tube end and the interior pipe of coal wind; Two flanges of center wind end casing adjusting device are separately fixed at the end face of pipe in the coal wind and an end of atomizer conduit.
The combustion-supporting airduct first line of a couplet described in the technical solution of the present utility model is connected to axial flow airduct, eddy flow airduct and central air hose, and the control valve of butterfly valve type is housed respectively on axial flow airduct, eddy flow airduct and the central air hose; The adjusting compensation arrangement of axial flow airduct and eddy flow airduct is housed on the described combustion-supporting airduct.
Between combustion-supporting airduct described in the technical solution of the present utility model and the coal wind inlet pipeline coal wind compensation wind pipe is housed.
Coal wind inlet pipeline oblique cutting described in the technical solution of the present utility model is gone in the coal wind outer tube, and is welded on the burner, is provided with wear-resistant ceramic sheet protective layer on the coal wind duct wall of oblique cutting mouth.
The utility model has the advantages that:
1, utilize high speed difference, strong eddy flow, the steady flame effect of center wind to make the burned flame regular shape complete, flame stabilization ripple disable, the phenomenon that kiln lining can not occur sweeping; 2, coal dust and wind, secondary wind good mixing, sufficient combustion so can improve the heat force intensity of kiln, reduces the wind ratio one time simultaneously, thereby improves the output of kiln and reduce hear rate; 3, hold together petticoat pipe and form bowl-shape effect and make flame kernel form the recirculating zone, the high-temperature gas that coal dust firing produces has created advantageous conditions for anthracitic burning, makes Flame Temperature Distribution reasonable, and it is smooth to burn; 4, reduce the content of CO and NOX; 5, online easy to adjust, can regulate the sectional area that respectively exports the air channel in operation, thereby change spouting velocity, reach and regulate flame profile and strong and weak purpose; 6, long service life, nozzle has adopted special material, can be anti-oxidant more than 1200 ℃, there is the protection of wear-resistant ceramic layer at the coal powder entrance place, can prevent coal dust washing away burner.
Description of drawings
Fig. 1 is the structural representation of the utility model nozzle head;
Fig. 2 is a structural representation of the present utility model.
The specific embodiment
As Fig. 1, shown in 2: the nozzle head of anthracite coal burner is divided into five passages from outside to inside successively, that is: axial flow wind passage A, eddy flow wind channel B, the coal wind duct C of pulverized coal conveying, center wind duct D and can for the igniting diesel oil ignition channel E, the axial flow wind of this burner nozzle head, eddy flow wind, coal wind discharge area all can be by the adjusting device on the burner body 25,27,31 online adjustings, be axial flow wind at each combustion air pipeline in addition, the control valve 45 of adjustable rectification campaign amount is housed on eddy flow wind and the central air hose road, 42, the mode of 34, two kinds of adjusting flames has guaranteed the demand of online adjusting flame profile well.
The structure of burner nozzle head as shown in Figure 1, the most inboard is the ignition channel E of fuel, igniter 2 adopts diesel oil atomization device shower nozzle, in the centering wind passage D, the exit of center wind duct D is provided with center wind end casing 3, mode with welding on center wind end casing 3 is connected with atomizer conduit 20, and atomizer conduit 20 is enclosed within the outside of oil pipe 21, pipe 19 organization center wind passage D in atomizer conduit 20 and the coal wind.
The outside of center wind duct D is shower nozzle 1 and the interior shower nozzle screwed pipe 13 of coal dust in the interior pipe 19 of the coal wind of pulverized coal conveying, the coal dust, adopts thread connection between the interior shower nozzle screwed pipe 13 of shower nozzle 1 and coal dust in the coal dust; Adopt the groove welding manner in the coal wind in pipe 19 and the coal dust between the shower nozzle screwed pipe 13.Pipe 19, the interior shower nozzle 1 of coal dust, the interior shower nozzle screwed pipe 13 of coal dust and swirl cone 4, cyclone screwed pipe 11, coal dust outer tube 18 are formed coal wind duct C in the coal wind.
Be provided with swirl cone 4, cyclone screwed pipe 11, coal dust outer tube 18 in the outside of coal wind duct C, cyclone 4 is swirl cones that are processed with spiral grooves on outer surface of cone, the head cone diameter of swirl cone dwindles gradually along airflow direction, adopt thread connection between cyclone 4 and the cyclone screwed pipe 11, adopt the groove welding manner between cyclone screwed pipe 11 and the coal dust outer tube 18.Form eddy flow wind channel B by swirl cone 4, cyclone screwed pipe 11, coal dust outer tube 18 and eddy flow wind urceolus 5, eddy flow wind urceolus screwed pipe 10, eddy flow wind outer tube 17.
The outside of eddy flow wind channel B be provided with flame cover 6, axial flow wind urceolus 7, flange 9 and outside airduct 16; Hold together flame cover 6 and adopt trapezoidal thread to connect with axial flow wind urceolus 7, axial flow wind urceolus 7 adopts Bolt Connection with flange 9, and flange 9 adopts the groove welding manner with outer airduct 16; Hold together flame cover 6, axial flow wind urceolus 7, flange 9, outer airduct 16 and swirl cone 4, cyclone screwed pipe 11, eddy flow wind outer tube 17 composition axial flow wind passage A.
What axial flow wind urceolus 7 and eddy flow wind urceolus 5 adopted in addition is gap machinery fit system; The air outlet of five passages of nozzle head is inclined exit, all has certain inclined-plane on the port of export of shower nozzle 1, swirl cone 4, eddy flow wind urceolus 5, axial flow wind urceolus 7 in the coal dust, is horn-like; Be welded with the dog 14 and the resistant to elevated temperatures material feeding protective layer 15 that waters of increase casting material strength in shower nozzle outermost and outer airduct 16 outsides; in order to protection burner head and the burner airduct that stretches in the kilneye; adopt bolt and rest pad location between each passage airduct, guarantee the axiality and the depth of parallelism of head end during assembling.
As shown in Figure 2, on the body of burner, be fixed with the adjusting device 25,27,31 of regulating axial flow wind discharge area, eddy flow wind discharge area and coal wind discharge area, and the adjusting device 33 of center wind cover plate 3; Adjusting device 25,27 is FlexbleJoints that have four flanges, two flanges are separately fixed at the bellows both sides, connect with sylphon seal, other two flanges are located at the outside of above-mentioned two flanges respectively, by two parallel longitudinal ends that are connected in four flanges of screw rod; Two flanges in the compensator outside of adjusting device 25 connect with outer airduct 16 and eddy flow wind outer tube 17 respectively, nut by the adjusting screw(rod) two ends, can regulate the spacing between two flanges of the bellows outside, the change of distance drive eddy flow wind outer tube 17 and outer airduct 16 relatively move between two flanges, thereby change the cross section of the band gradient of nozzle head axial flow wind urceolus 7 and 5 formation of eddy flow wind urceolus, reach the purpose of regulating combustion-supporting axial flow wind muzzle velocity; The flange at the compensator two ends of adjusting device 27 connects with eddy flow wind outer tube 17 and coal wind outer tube 18 respectively, by elongating or shortening of screw rod on the adjustment adjusting device 27, adjust the relative position between eddy flow wind outer tube 17 and the coal wind outer tube 18, reach the sectional area of adjusting the outlet of eddy flow wind, promptly regulate the wind speed of eddy flow wind outlet; Adjusting device 31 is to be made of two flanges and two screw rods, two parallel longitudinal ends that are connected in two flanges of screw rod, a flange is fixed on coal wind outer tube 18 ends, another flange is fixed on manages on 19 in the coal wind, nut on the adjusting screw(rod) two ends, can regulate the relative position between the pipe 19 in coal wind outer tube 18 and the coal wind, thereby change the area of coal wind outlet, coal wind inlet pipeline 30 oblique cutting is at a certain angle gone into coal wind outer tube 18, and be welded on the burner, on the coal wind duct wall of oblique cutting mouth, be provided with the gluing wear-resistant ceramic sheet protective layer of special high temperature, and be provided with coal dust passage abrasion condition observation cover plate 29 at oblique spigot; Adjusting device 33 on the center wind end casing 3 is by two flanges, and parallel two screw rods that are connected in two flange longitudinal ends constitute, a flange is fixed on the section of pipe 19 in the coal wind, another flange is fixed on an end of atomizer conduit 20, nut on the adjusting screw(rod) two ends, can regulate the front and back position of center wind end casing 3 shower nozzle 1 in coal dust, to change the size of flame.On burner, be provided with combustion-supporting airduct 39, combustion-supporting airduct 39 is provided with the axial flow airduct 44 that communicates with axial flow wind passage A, the eddy flow airduct 41 that communicates with eddy flow wind channel B, the central air hose 36 that communicates with center wind duct D is equipped with the control valve 45,42,35 of butterfly valve type respectively on the airduct 44,41,36; Two combustion-supporting airducts are housed on combustion-supporting airduct 39 regulate compensation arrangement 43,40, regulate compensation arrangement by four flanges, two screw rods and bellows are formed, regulate compensation arrangement 43,40 structure and adjusting device 25,27 structure is identical, regulating compensation arrangement 43 is installed on the combustion-supporting airduct 39 between axial flow airduct 44 and the eddy flow airduct 41, regulating compensation arrangement 40 is installed on the combustion-supporting airduct 39 between eddy flow airduct 41 and the coal wind compensation wind pipe 38, regulating axial flow wind outlet, when eddy flow wind outlet and coal wind outlet, can play corresponding combustion-supporting airduct adjusting compensating action on the combustion-supporting airduct 39.
Combustion-supporting airduct 39 and 30 in coal wind inlet pipeline are equipped with a coal wind compensation wind pipe 38, on the coal wind compensation wind pipe 38 valve 34 is housed, its effect is can stop coal wind blower fan only to open the requirement that combustion fan just can satisfy cool burner in stopping the kiln cooling procedure, and the typhoon machine of can opening less like this is to reach purpose of energy saving.
At each combustion air pipeline is the Pressure gauge 24,26,32 that the 60KPa range is housed on axial flow wind, eddy flow wind and the central air hose road, conveniently know the speed of each channel air air-flow at the scene indirectly, thereby adjust the flame profile of burner better at the burner outlet place.

Claims (8)

1. rotary kiln anthracite coal burner, it is characterized in that: 1. the nozzle head of burner is provided with axial flow wind from outside to inside successively, eddy flow wind, coal wind, center wind and five passage A of igniting, B, C, D, E, the outlet of five passages is inclined exit, in the ignition channel E centering wind passage D, the exit of center wind duct D is provided with center wind end casing (3), the exit of coal wind duct C is provided with shower nozzle (1) in the coal dust, the exit of eddy flow wind channel B and axial flow wind passage A is respectively equipped with swirl cone (4), eddy flow wind urceolus (5) and axial flow wind urceolus (7), the exit in axial flow wind urceolus (7) outside is provided with flame cover (6); 2. on burner body, be respectively equipped with axial flow wind, eddy flow wind and coal wind outlet adjusting device (25,27,31), and center wind end casing adjusting device (33); 3. on burner body, be provided with combustion-supporting airduct (39).
2. rotary kiln anthracite coal burner according to claim 1 is characterized in that being connected with atomizer conduit (20) on the center wind end casing (3) in exit of described center wind duct D; Shower nozzle (1) connects with pipe (19) employing groove mode in the coal wind in the coal dust of coal wind duct C; The swirl cone (4) of eddy flow wind channel B adopts the groove mode to connect with coal wind outer tube (18); The eddy flow wind urceolus (5) of axial flow wind passage A adopts the groove formula to connect with eddy flow wind outer tube (17), and the flange (9) on the axial flow wind urceolus (7) of axial flow wind passage A and the outer airduct (16) adopts Bolt Connection; Axial flow wind urceolus (7) adopts trapezoidal thread to connect with holding together flame cover (6), and the port of export of shower nozzle (1), swirl cone (4), eddy flow wind urceolus (5) and axial flow wind urceolus (7) is inclined exit in the coal dust.
3. rotary kiln anthracite coal burner according to claim 1 and 2, the swirl cone (4) that it is characterized in that described burner nozzle head is a swirl cone that is processed with spiral grooves outside on the outer surface of cone, and the head cone diameter of swirl cone (4) dwindles gradually along airflow direction.
4. rotary kiln anthracite coal burner according to claim 1 and 2, it is characterized in that described axial flow wind and eddy flow wind outlet adjuster (25,27) are FlexbleJoints that has four flanges, two flanges are separately fixed at the bellows both sides and connect with sylphon seal, other two flanges are located at the outside of above-mentioned two flanges respectively, by two parallel longitudinal ends that are connected in four flanges of screw rod; Axial flow wind cross section outlet regulating device (25) is that two flanges outside the compensator are connected with outer airduct (16) and eddy flow wind outer tube (17) respectively; Eddy flow wind outlet adjuster (27) is that the flange with the compensator two ends connects with eddy flow wind outer tube (17) and coal wind outer tube (18) respectively.
5. rotary kiln anthracite coal burner according to claim 1 and 2, it is characterized in that described coal wind outlet adjusting device (31) and center wind end casing adjusting device (33) be made of two parallel longitudinal ends that are connected in two flanges of screw rod two flanges and two screw rods; Two flanges of coal wind outlet adjusting device (31) are separately fixed at manages on (19) in coal wind outer tube (18) end and the coal wind; Two flanges of center wind end casing adjusting device (33) are separately fixed at the end face of pipe (19) in the coal wind and an end of atomizer conduit (20).
6. rotary kiln anthracite coal burner according to claim 1, it is characterized in that being connected with on the described combustion-supporting airduct (39) axial flow airduct (44), eddy flow airduct (41) and central air hose (38), the control valve (45,42,35) of butterfly valve type is housed respectively on axial flow airduct (44), eddy flow airduct (41) and the central air hose (38); The adjusting compensation arrangement (43,40) of axial flow airduct (44) and eddy flow airduct (41) is housed on the described combustion-supporting airduct (39).
7. rotary kiln anthracite coal burner according to claim 1 is characterized in that between described combustion-supporting airduct (39) and the coal wind inlet pipeline (30) coal wind compensation wind pipe (38) being housed.
8. rotary kiln anthracite coal burner according to claim 1; it is characterized in that described coal wind inlet pipeline (30) oblique cutting goes in the coal wind outer tube (18); and be welded on the burner, on the coal wind duct wall of oblique cutting mouth, be provided with wear-resistant ceramic sheet protective layer.
CN2010202108446U 2010-05-22 2010-05-22 Anthracite powdered coal burner for a rotary kiln CN201706487U (en)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287829A (en) * 2011-09-24 2011-12-21 徐道芹 Direct flow and swirl flow joint outlet-type burner
CN103217012A (en) * 2013-04-09 2013-07-24 贵州安凯达新型建材有限责任公司 Energy-saving rotary kiln
CN103629664A (en) * 2013-12-05 2014-03-12 刘国忠 Multichannel oxygen-enriched combustor used in rotary kiln
CN104831056A (en) * 2015-03-17 2015-08-12 北京首钢国际工程技术有限公司 Preheating and roasting method of chromium concentrate pellet
CN105066130A (en) * 2015-08-21 2015-11-18 哈尔滨工业大学 Spiral cyclone and combustion device comprising same
CN105180166A (en) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 Burner nozzle
CN105180165A (en) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 Burner
CN106568081A (en) * 2016-11-03 2017-04-19 扬州新建水泥技术装备有限公司 Novel burner
CN106705035A (en) * 2017-01-16 2017-05-24 大峘集团有限公司 Coal powder combustion method and device of upper combustion chamber of sleeve kiln
CN109611832A (en) * 2019-01-17 2019-04-12 襄阳市胜合燃力设备有限公司 A kind of double vortex rotary kiln burners of multichannel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287829A (en) * 2011-09-24 2011-12-21 徐道芹 Direct flow and swirl flow joint outlet-type burner
CN103217012A (en) * 2013-04-09 2013-07-24 贵州安凯达新型建材有限责任公司 Energy-saving rotary kiln
CN103217012B (en) * 2013-04-09 2015-10-28 贵州安凯达实业股份有限公司 A kind of energy-conservation rotary kiln
CN103629664A (en) * 2013-12-05 2014-03-12 刘国忠 Multichannel oxygen-enriched combustor used in rotary kiln
CN104831056A (en) * 2015-03-17 2015-08-12 北京首钢国际工程技术有限公司 Preheating and roasting method of chromium concentrate pellet
CN105180165A (en) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 Burner
CN105180166A (en) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 Burner nozzle
CN105066130A (en) * 2015-08-21 2015-11-18 哈尔滨工业大学 Spiral cyclone and combustion device comprising same
CN105066130B (en) * 2015-08-21 2018-09-07 哈尔滨工业大学 A kind of helical swirler and utilize burner made of the helical swirler
CN106568081A (en) * 2016-11-03 2017-04-19 扬州新建水泥技术装备有限公司 Novel burner
CN106705035A (en) * 2017-01-16 2017-05-24 大峘集团有限公司 Coal powder combustion method and device of upper combustion chamber of sleeve kiln
CN106705035B (en) * 2017-01-16 2019-07-12 大峘集团有限公司 A kind of sleeve kiln upper combustion chamber coal dust combustion method and device
CN109611832A (en) * 2019-01-17 2019-04-12 襄阳市胜合燃力设备有限公司 A kind of double vortex rotary kiln burners of multichannel

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Address after: 441002 No. 45 Renmin Road, Hubei, Xiangfan

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Patentee before: Xiangfan Dali Electromechanical Technology Co., Ltd.

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Owner name: XIANGFAN ZHONGHE M + E TECHNOLOGY CO., LTD.

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