CN201496954U - Low NOX solid slag-off pulverized coal burner - Google Patents
Low NOX solid slag-off pulverized coal burner Download PDFInfo
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- CN201496954U CN201496954U CN2009200679996U CN200920067999U CN201496954U CN 201496954 U CN201496954 U CN 201496954U CN 2009200679996 U CN2009200679996 U CN 2009200679996U CN 200920067999 U CN200920067999 U CN 200920067999U CN 201496954 U CN201496954 U CN 201496954U
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- 239000003245 coal Substances 0.000 title claims abstract description 45
- 239000007787 solid Substances 0.000 title description 3
- 238000009833 condensation Methods 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 239000007921 spray Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 16
- 239000002956 ash Substances 0.000 description 8
- 238000004939 coking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
本实用新型涉及一种低NOX固态排渣煤粉燃烧器,包括调节手轮、一次风/煤粉管、调节螺杆套管、调节螺杆、轴流发生器、喷嘴锥体、燃烧器壳体、高温耐火层、底座和后端盖,其特征在于,在后端盖中心外依次设有二次风稳焰旋流导向器和二次风旋流导向器,二次风稳焰旋流导向器和二次风旋流导向器与设于后端盖外的二次风室连接,在后端盖和高温耐火层之间设有防凝渣三次风幕喷管,防凝渣三次风幕喷管与设于后端盖外的三次风室连接。本实用新型的优点是既可燃烧烧低灰熔点的煤,又能燃烧烧高灰熔点的煤。
The utility model relates to a low NO X solid-state slag discharge pulverized coal burner, comprising an adjusting hand wheel, a primary air/powdered coal pipe, an adjusting screw sleeve, an adjusting screw, an axial flow generator, a nozzle cone, and a burner shell , a high-temperature refractory layer, a base and a rear end cover, which are characterized in that a secondary air flame-stabilizing swirl guide and a secondary air swirl guide are arranged outside the center of the rear end cover in sequence, and the secondary air flame-stabilizing swirl guide The device and the secondary air swirl guide are connected to the secondary air chamber located outside the rear end cover. Between the rear end cover and the high temperature refractory layer, there is an anti-condensation tertiary air curtain nozzle, and an anti-condensation tertiary air curtain The spray pipe is connected with the tertiary air chamber arranged outside the rear end cover. The utility model has the advantage that it can not only burn coal with low ash melting point, but also burn coal with high ash melting point.
Description
技术领域technical field
本实用新型涉及一种低NOX固态排渣煤粉燃烧器,适用于2-35吨蒸汽、热水锅炉,炉窑、锻造、炼钢,路桥拌和站及冷骨料加热、电站锅炉点火等各行业领域生产对热能需求的燃烧装置,属于煤粉燃烧器技术领域。The utility model relates to a low NO X solid-state slag-discharging pulverized coal burner, which is suitable for 2-35 tons of steam and hot water boilers, kilns, forging, steelmaking, road and bridge mixing stations, heating of cold aggregates, ignition of power plant boilers, etc. The invention relates to combustion devices that require thermal energy for production in various industries, and belongs to the technical field of pulverized coal burners.
背景技术Background technique
层燃锅炉是目前工业锅炉广泛应用的炉型,由受压部件、链条炉排等主要部件组成,燃料煤在炉排上层状燃烧,燃烧时与空气的混合不充分,造成燃烧不彻底、燃烬率低、q4热损失大,排烟含NOx、SO2、粉尘浓度高,污染环境。为解决这些问题,申请人曾于2007年02月12日申请的名称为“低氮氧化物轴向涡流粉煤燃烧器”实用新型专利,公开号为CN201014436,2007年6月11日申请的名称为“低NOx多管轴向涡流粉煤燃烧器”的发明专利,申请号为200710110815.5,这两种燃烧器的缺点是:The layer-fired boiler is a furnace type widely used in industrial boilers at present. It is composed of pressure parts, chain grate and other main components. Low burn-out rate, large q 4 heat loss, exhaust smoke containing NOx, SO 2 , high dust concentration, polluting the environment. In order to solve these problems, the applicant applied for a utility model patent entitled "Low NOx Axial Vortex Pulverized Coal Burner" on February 12, 2007, the publication number is CN201014436, and the name applied on June 11, 2007 It is the invention patent of "low NOx multi-tube axial vortex pulverized coal burner", the application number is 200710110815.5. The disadvantages of these two burners are:
1,由于是一次风的燃烧方式,煤粉燃烧还不够充分;1. Due to the primary air combustion method, the combustion of pulverized coal is not sufficient;
2,由于燃烧器的燃烧温度很高,从而影响燃烧器的使用寿命。2. Due to the high combustion temperature of the burner, the service life of the burner is affected.
申请人又于2008年7月28日申请的名称为“低NOx液态排渣双旋流煤粉燃烧器”的实用新型专利,申请号为“200820151316.0”,该燃烧器的二次风室设于燃烧室壳体外,在二次风室内设有旋流导管,该一次风是轴向引入,而二次风是切向引入,燃烧温度可达到1450℃-1600℃,因此燃烧后是液体排渣,其缺点是只能燃烧低灰熔点的煤。On July 28, 2008, the applicant applied for a utility model patent named "Low NOx Liquid Slagging Double Swirling Pulverized Coal Burner" with the application number "200820151316.0". The secondary air chamber of the burner is located in Outside the combustion chamber shell, there is a swirl duct in the secondary air chamber. The primary air is introduced axially, while the secondary air is tangentially introduced. The combustion temperature can reach 1450°C-1600°C, so the liquid slag is discharged after combustion. , its disadvantage is that it can only burn coal with low ash melting point.
发明内容Contents of the invention
本实用新型的目的是提供一种既可燃烧低灰熔点的煤,又能燃烧高灰熔点煤的低NOX固态排渣煤粉燃烧器。The purpose of the utility model is to provide a low NOx solid-state slagging pulverized coal burner which can burn coal with low ash melting point and high ash melting point coal.
为实现以上目的,本实用新型的技术方案是提供一种低NOX固态排渣煤粉燃烧器,包括调节手轮、一次风/煤粉管、调节螺杆套管、调节螺杆、轴流发生器、喷嘴锥体、燃烧器壳体、高温耐火层、底座和后端盖,燃烧器壳体设于底座上,高温耐火层设于燃烧器壳体内壁,在燃烧器壳体的后端设有后端盖,后端盖的中心孔与一次风/煤粉管一端连接,带有调节螺杆套管的调节螺杆设于一次风/煤粉管中间,在调节螺杆穿过一次风/煤粉管的外端上设有调节手轮,在调节螺杆内端设有喷嘴锥体,在喷嘴锥体外侧的调节螺杆上设有轴流发生器,在后端盖上分别设有观火孔、火焰检测器和自动点火装置,其特征在于,在后端盖中心外依次设有二次风稳焰旋流导向器和二次风旋流导向器,二次风稳焰旋流导向器和二次风旋流导向器与设于后端盖外的二次风室连接,在后端盖和高温耐火层之间设有防凝渣三次风幕喷管,防凝渣三次风幕喷管与设于后端盖外的三次风室连接。In order to achieve the above objectives, the technical solution of the present utility model is to provide a low NO X solid-state slagging pulverized coal burner, including an adjusting hand wheel, a primary air/coal powder pipe, an adjusting screw sleeve, an adjusting screw, and an axial flow generator , nozzle cone, burner shell, high temperature refractory layer, base and rear end cover, the burner shell is set on the base, the high temperature refractory layer is set on the inner wall of the burner shell, and the rear end of the burner shell is provided with Rear end cover, the central hole of the rear end cover is connected to one end of the primary air/powdered coal pipe, the adjusting screw with the adjusting screw sleeve is set in the middle of the primary air/powdered coal pipe, and the adjusting screw passes through the primary air/powdered coal pipe There is an adjusting handwheel on the outer end of the adjusting screw, a nozzle cone on the inner end of the adjusting screw, an axial flow generator on the adjusting screw outside the nozzle cone, and a fire viewing hole and a flame on the rear end cover. The detector and the automatic ignition device are characterized in that a secondary wind flame-stabilizing swirl guide and a secondary wind swirl guide are arranged in sequence outside the center of the rear end cover, a secondary wind flame-stabilizing swirl guide and a secondary air swirl guide The air swirl guide is connected with the secondary air chamber located outside the rear end cover, and the anti-condensation tertiary air curtain nozzle is installed between the rear end cover and the high-temperature refractory layer, and the anti-condensation tertiary air curtain nozzle is connected with the device It is connected to the tertiary air chamber outside the rear end cover.
本实用新型将二次风室安装在燃烧器的后部,使一次风与二次风同轴向,旋流方向与轴流发生器旋流方向一致,使可燃物混合更均匀,燃烧物先与一次风混合燃烧后,再与可调节二次风混合燃烧,分多个区段多层次燃烧,燃烧充分,燃尽率高,本实用新型在后端盖和高温耐火层之间增加防凝渣三次风幕喷管,防凝渣三次风幕喷管吹出的高速风(60m/s)在高温耐火层内壁形成一层风幕,可以避免在高温燃烧下的灰分贴壁粘结结焦、结渣同时有效保护燃烧器壳体避免温度过高而损坏,同时在高负荷的情况下可以补充空气的配比,补充氧气,使燃烧更充分,本实用新型由于设计了防凝渣三次风幕喷管核心结构以固态方式排渣,所以既能燃烧低灰熔点的煤,又能燃烧高灰熔点的煤。The utility model installs the secondary air chamber at the rear of the burner, so that the primary air and the secondary air are coaxial, and the swirl direction is consistent with the swirl direction of the axial flow generator, so that the combustibles can be mixed more evenly and the combustibles can be mixed first. After mixed combustion with the primary air, it is mixed with the adjustable secondary air, and is divided into multiple sections and multi-layered combustion, with sufficient combustion and high burnout rate. The utility model adds anti-condensation between the rear end cover and the high-temperature refractory layer The high-speed wind (60m/s) blown by the slag three-time air curtain nozzle and the anti-condensation three-time air curtain nozzle forms an air curtain on the inner wall of the high-temperature refractory layer, which can avoid the ash sticking to the wall under high-temperature combustion, coking and coking. At the same time, the slag can effectively protect the burner shell from being damaged due to excessive temperature. At the same time, the ratio of air and oxygen can be supplemented under high load conditions to make the combustion more complete. The tube core structure discharges slag in a solid state, so it can burn both low ash melting point coal and high ash melting point coal.
本实用新型的优点是既可燃烧低灰熔点的煤,又能烧烧高灰熔点的煤。The utility model has the advantage that it can not only burn coal with low ash melting point, but also burn coal with high ash melting point.
附图说明Description of drawings
图1为低NOX固态排渣煤粉燃烧器结构示意图;Fig. 1 is the structure schematic diagram of low NO X solid-state slagging pulverized coal burner;
图2为低NOX固态排渣煤粉燃烧器I-I剖视图;Fig. 2 is the sectional view of low NOx solid-state slagging pulverized coal burner II;
图3为低NOX固态排渣煤粉燃烧器A-A剖视图。Fig. 3 is a cross-sectional view of AA of the low NOx solid slagging pulverized coal burner.
具体实施方式Detailed ways
以下结合附图和实施例对本实用新型作进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is described further.
实施例Example
如图1、2、3所示,为一种低NOX固态排渣煤粉燃烧器结构示意图,所述的低NOX固态排渣煤粉燃烧器由调节手轮1、一次风/煤粉管2、调节螺杆套管3、调节螺杆4、轴流发生器5、喷嘴锥体6、喷嘴扩散器7、防凝渣三次风室8、二次风室9、防凝渣三次风喷管10、二次风旋流导向器11、二次风稳焰旋流导向器12、燃烧器壳体13、高温耐火层14、底座16、观火孔17、火焰检测器18、自动点火装置19、风幕防凝渣三次风调节阀20、二次风调节阀21和后端盖22组成。As shown in Figures 1, 2, and 3, it is a schematic structural diagram of a low NOx solid-state slagging pulverized coal burner.
燃烧器壳体13安装在底座16上,高温耐火层14安装在燃烧器壳体13内壁,在燃烧器壳体13的后端安装后端盖22,后端盖22中心孔与一次风/煤粉管2一端连接,带有调节螺杆套管3的调节螺杆4设于一次风/煤粉管2中间,在调节螺杆4穿过一次风/煤粉管2的外端上安装调节手轮1,在调节螺杆4内端安装喷嘴锥体6,在喷嘴锥体6外侧的调节螺杆套管3上安装轴流发生器5,在后端盖22上分别安装观火孔17、火焰检测器18和自动点火装置19,在后端盖22中心外依次安装二次风稳焰旋流导向器12和二次风旋流导向器11,二次风稳焰旋流导向器12和二次风旋流导向器11与设于后端盖22外的二次风室9连接,在后端盖22和高温耐火层14之间安装防凝渣三次风喷管10,防凝渣三次风喷管10与设于后端盖22外的防凝渣三次风室8连接,所述的一次风/煤粉管2靠近后端盖22的一端安装喷嘴扩散器7,喷嘴扩散器7的扩散角与喷嘴锥体6的扩散角匹配,在一次风/煤粉管2的另一端安装三次风幕调节阀20和二次风调节阀21。The burner housing 13 is installed on the
工作时,将本实用新型安装在锅炉炉膛的外部,与炉膛相通,一次风和煤粉通过一次风/煤粉管2进入燃烧室15,启动轴流发生器5和自动点火装置19,调节调节手轮1从而调节使喷嘴锥体6和喷嘴扩散器7之间的开度,使一次风和煤粉进入燃烧室15后充分燃烧,同时启动火焰检测器18、风幕调节阀20、二次风调节阀21,防凝渣三次风幕喷管10喷出的风在高温耐火层14内壁形成风幕,二次风通过二次风旋流导向器11和二次风稳焰旋流导向器12进入燃烧室15,与已与一次风燃烧过的煤粉再次混合后燃烧,通过观火孔17和火焰检测器18掌握燃烧过程,并及时调节调节手轮1,使煤粉更充分燃烧,高温烟气进入锅炉炉膛,燃烧烬的煤粉灰从燃烧室底部排出。During work, the utility model is installed on the outside of the boiler furnace, communicated with the furnace, the primary air and coal powder enter the
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101482265B (en) * | 2009-02-24 | 2011-10-05 | 上海题桥纺织染纱有限公司 | Low NOX dry ash extraction coal powder burner |
CN102563636A (en) * | 2012-02-27 | 2012-07-11 | 中国计量学院 | Controllable vortex flame spreader cone |
-
2009
- 2009-02-24 CN CN2009200679996U patent/CN201496954U/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101482265B (en) * | 2009-02-24 | 2011-10-05 | 上海题桥纺织染纱有限公司 | Low NOX dry ash extraction coal powder burner |
CN102563636A (en) * | 2012-02-27 | 2012-07-11 | 中国计量学院 | Controllable vortex flame spreader cone |
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