CN114738741A - Lean coal cyclone combustion device under oxygen/carbon dioxide atmosphere - Google Patents
Lean coal cyclone combustion device under oxygen/carbon dioxide atmosphere Download PDFInfo
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 90
- 239000001301 oxygen Substances 0.000 title claims abstract description 90
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 66
- 239000003245 coal Substances 0.000 title claims abstract description 51
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 33
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 30
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 7
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
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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
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Abstract
Description
技术领域technical field
本发明涉及一种燃烧装置，具体涉及一种氧气/二氧化碳气氛下贫煤旋流燃烧装置，本发明属于燃煤锅炉技术领域。The invention relates to a combustion device, in particular to a lean coal swirl combustion device in an oxygen/carbon dioxide atmosphere, and belongs to the technical field of coal-fired boilers.
背景技术Background technique
基于CCUS(碳捕集、利用、封存)的富氧燃烧技术是一种高效的碳捕集手段，其系统具体形式为采用烟气再循环，用锅炉尾部CO2代替常规助燃空气中的N2，另外补充纯氧组成O2/CO2混合气氛作为常规锅炉燃烧系统中的一、二次风，从而避免烟气中N2的引入，获得高CO2浓度的烟气，以便于CO2的高效捕集。常规火电锅炉煤粉燃烧装置的设计，均以煤粉燃料在空气气氛下的燃烧特性作为理论基础，其结构形式及配风方式均按空气气氛进行设计。在富氧燃烧锅炉系统中，煤粉燃烧装置需在O2/CO2气氛下实现稳定高效燃烧，常规煤粉燃烧装置并不适用，且目前市场尚未开发出适用于煤粉在O2/CO2气氛下燃烧的大型燃烧设备。Oxygen-enriched combustion technology based on CCUS (carbon capture, utilization, and storage) is an efficient carbon capture method. The specific form of the system is to use flue gas recirculation to replace N2 in conventional combustion air with CO2 from the boiler tail. , In addition, pure oxygen is added to form a mixed atmosphere of O 2 /CO 2 as the primary and secondary air in the conventional boiler combustion system, so as to avoid the introduction of N 2 in the flue gas and obtain flue gas with high CO 2 concentration, so as to facilitate the reduction of CO 2 Efficient capture. The design of the pulverized coal combustion device of conventional thermal power boilers is based on the combustion characteristics of pulverized coal fuel in an air atmosphere, and its structure and air distribution are designed according to the air atmosphere. In the oxygen-enriched combustion boiler system, the pulverized coal combustion device needs to achieve stable and efficient combustion under the O 2 / CO 2 atmosphere, and the conventional pulverized coal combustion device is not suitable. 2 Large-scale combustion equipment that burns under the atmosphere.
发明内容SUMMARY OF THE INVENTION
本发明针对常规动力型贫煤，为解决常规的煤粉燃烧装置不适用于煤粉在O2/CO2气氛下实现稳定高效燃烧的问题，进而提供了一种氧气/二氧化碳气氛下贫煤旋流燃烧装置。In order to solve the problem that the conventional pulverized coal combustion device is not suitable for realizing stable and efficient combustion of pulverized coal under the O2/CO2 atmosphere, the present invention further provides a lean coal swirl combustion under the oxygen/carbon dioxide atmosphere for the conventional power type lean coal. device.
本发明为解决上述问题采取的技术方案是：The technical scheme that the present invention takes to solve the above problems is:
本发明包括弯头、一次风筒、氧气枪和氧气调节阀，一次风筒的一端与弯头一体连接，氧气枪7的一端穿过弯头的外壁插装在一次风筒的内部，氧气枪的右端设有氧气调节阀，氧气调节阀位于一次风筒的外侧，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括导流组件，所述导流组件安装在氧气枪的左端，且所述导流组件位于氧气枪和一次风风筒之间。The invention includes an elbow, a primary air cylinder, an oxygen gun and an oxygen regulating valve. One end of the primary air cylinder is integrally connected with the elbow, and one end of the oxygen gun 7 is inserted into the interior of the primary air cylinder through the outer wall of the elbow. The right end is provided with an oxygen regulating valve, and the oxygen regulating valve is located on the outside of the primary air duct. The depleted coal swirling combustion device in an oxygen/carbon dioxide atmosphere also includes a guide assembly, which is installed on the left end of the oxygen gun. , and the guide assembly is located between the oxygen gun and the primary air duct.
进一步地，所述导流组件包括导流板、导流板支撑和稳燃齿，导流板通过导流板与氧气枪的外侧壁固定连接，稳燃齿套装在氧气枪上，并位于氧气枪的左端。Further, the guide assembly includes a guide plate, a guide plate support and a combustion stabilizing tooth, the guide plate is fixedly connected with the outer side wall of the oxygen gun through the guide plate, and the combustion stabilizing tooth is sleeved on the oxygen gun and located in the oxygen lance. Left end of gun.
进一步地，一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括氧气旋流叶片，氧气旋流叶片插装在氧气枪内并位于氧气枪的左端。Further, a lean coal swirling combustion device in an oxygen/carbon dioxide atmosphere further comprises an oxygen swirling blade, which is inserted in the oxygen lance and is located at the left end of the oxygen lance.
进一步地，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括导流锥体，导流锥体安装在一次风筒内，且导流锥体的外壁与一次风筒的内壁固定连接，导流锥体的锥面端相对设置。Further, the depleted coal swirling combustion device in an oxygen/carbon dioxide atmosphere further comprises a diversion cone, the diversion cone is installed in the primary air duct, and the outer wall of the diversion cone is fixed to the inner wall of the primary air duct. connected, and the conical ends of the diversion cones are arranged opposite each other.
进一步地，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括二次风风筒，二次风风筒套装在一次风风筒上。Further, the depleted coal swirling combustion device in an oxygen/carbon dioxide atmosphere further comprises a secondary air duct, and the secondary air duct is sleeved on the primary air duct.
进一步地，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括三次风风筒和三次风旋流叶片，三次风风筒套装在二次风风筒上，三次风风筒和二次风风筒之间设有三次风旋流叶片。Further, the depleted coal swirl combustion device under an oxygen/carbon dioxide atmosphere also includes a tertiary air duct and a tertiary air swirl blade, the tertiary air duct is sleeved on the secondary air duct, and the tertiary air duct and the secondary air duct. There are tertiary wind swirl blades between the secondary wind ducts.
进一步地，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括四次风风筒和四次风旋流叶片，四次风风筒套装在三次风风筒上，四次风旋流叶片位于四次风风筒和三次风风筒之间。Further, the depleted coal swirl combustion device under an oxygen/carbon dioxide atmosphere also includes a tertiary air duct and a tertiary air swirl blade, and the tertiary air duct is sleeved on the tertiary air duct, and the tertiary air swirl The flow vanes are located between the tertiary air duct and the tertiary air duct.
本发明的有益效果是：The beneficial effects of the present invention are:
1、基于CCUS(碳捕集、利用、封存)的富氧燃烧技术是火电领域实现“双碳”目标的重要手段。由于CO2较N2热容大，故富氧燃烧(O2/CO2气氛)条件下，煤粉的着火、稳燃、燃尽及NOx排放特性，与煤粉在常规空气气氛下有显著区别，在O2/CO2气氛下旋流燃烧器一次风浓缩结构、一次风速、各层二次风风量分配等，均需结合具体煤质在O2/CO2气氛下的燃烧特性设计。1. Oxygen-enriched combustion technology based on CCUS (carbon capture, utilization, and storage) is an important means to achieve the goal of "double carbon" in the thermal power field. Since CO2 has a larger heat capacity than N2, under the condition of oxygen-enriched combustion (O 2 /CO 2 atmosphere), the ignition, stable combustion, burnout and NOx emission characteristics of pulverized coal are significantly different from those of pulverized coal in a conventional air atmosphere. In the O 2 /CO 2 atmosphere, the primary air concentration structure, the primary air speed, and the distribution of the secondary air volume of each layer of the swirl burner need to be designed according to the combustion characteristics of the specific coal quality in the O 2 /CO 2 atmosphere.
2、本发明旋流燃烧装置适用于O2/CO2气氛下贫煤燃烧，针对火电领域常见的动力型贫煤设计，具有着火、燃烧稳定、燃烧效率高、NOx排放低等诸多优点，尤其适用于大型火电锅炉，解决了常规空气煤粉燃烧装置无法适应O2/CO2气氛下高效稳定燃烧的共性问题，极大拓宽了旋流燃烧器的适用范围。在碳达峰、碳中和的背景下，为高效碳捕集提供重要技术支撑，极具有市场潜力。2. The swirl combustion device of the present invention is suitable for lean coal combustion in an O 2 /CO 2 atmosphere. It is designed for the power type lean coal common in the thermal power field, and has many advantages such as ignition, stable combustion, high combustion efficiency, and low NOx emissions, especially Applicable to large thermal power boilers, it solves the common problem that conventional air pulverized coal combustion devices cannot adapt to efficient and stable combustion in O 2 /CO 2 atmosphere, and greatly broadens the scope of application of swirl burners. In the context of carbon peaking and carbon neutrality, it provides important technical support for efficient carbon capture and has great market potential.
附图说明Description of drawings
图1是本发明的整体结构示意图；Fig. 1 is the overall structure schematic diagram of the present invention;
图2是图1的左视图。FIG. 2 is a left side view of FIG. 1 .
具体实施方式Detailed ways
具体实施方式一：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置，它包括弯头1、一次风风筒2、氧气枪7和氧气调节阀8，一次风筒2的一端与弯头1一体连接，氧气枪7的一端穿过弯头1的外壁插装在一次风筒2的内部，氧气枪7的右端设有氧气调节阀8，氧气调节阀8位于一次风筒2的外侧，所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括导流组件，所述导流组件安装在氧气枪7的左端，且所述导流组件位于氧气枪7和一次风风筒2之间。为防止一次风粉长时间冲刷造成的磨损，在氧气枪7和一次风风筒2内壁采用硬度较大碳化硅材料，延长其使用寿命至少2倍以上。Embodiment 1: This embodiment is described with reference to FIG. 1 to FIG. 2 . The present embodiment describes a lean coal swirling combustion device in an oxygen/carbon dioxide atmosphere, which includes an elbow 1 , a
具体实施方式二：结合图1至图2说明本实施方式，本实施方式所述导流组件包括导流板11、导流板支撑12和稳燃齿13，导流板11通过导流板支撑12与氧气枪7的外侧壁固定连接，稳燃齿13套装在氧气枪7上，并位于氧气枪7的左端。导流板11为圆筒体结构，导流板11通过导流板支撑12进行支撑，导流板11的设置可以加强煤粉气流浓缩效果，稳燃齿13为圆形套筒和多个矩形齿，圆形套筒套装在氧气枪7上，多个矩形齿沿圆形套筒的外壁均布设置，稳燃齿13的设计可以造成回流，卷吸烟气。Embodiment 2: This embodiment will be described with reference to FIG. 1 to FIG. 2 . The deflector assembly described in this embodiment includes a
其它组成及连接关系与具体实施方式一相同。Other components and connection relationships are the same as in the first embodiment.
具体实施方式三：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括氧气旋流叶片14，氧气旋流叶片14插装在氧气枪7内并位于氧气枪7的左端。氧气旋流叶片14可以使氧气快速均匀的与煤粉气流混合，提供煤粉气流燃烧所需的氧气。Embodiment 3: This embodiment is described with reference to FIGS. 1 to 2 . The lean coal swirling combustion device in an oxygen/carbon dioxide atmosphere described in this embodiment further includes an oxygen swirling
其它组成以连接关系与具体实施方式二相同。The other components are the same as in the second embodiment in the connection relationship.
具体实施方式四：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括导流锥体6，导流锥体6安装在一次风筒2内，且导流锥体6的外壁与一次风筒2的内壁固定连接，导流锥体6较窄的一端向内设置。Embodiment 4: The present embodiment will be described with reference to FIGS. 1 to 2 . The lean coal swirling combustion device in an oxygen/carbon dioxide atmosphere described in this embodiment further includes a diversion cone 6 , which is installed in a primary Inside the
导流锥体6为环形体，其导流齿呈倒梯型设置。采用导流锥体6，煤粉粒子具有相对高的动量，空气具有较低的动量，通过煤粉粒子和空气的动量的差异，煤粉粒子聚集在氧气枪7的附近，高煤粉浓度提高了快速点燃和火焰的稳定能力。The guide cone 6 is an annular body, and its guide teeth are arranged in an inverted trapezoid shape. Using the guide cone 6, the pulverized coal particles have relatively high momentum, and the air has a relatively low momentum. Through the difference in the momentum of the pulverized coal particles and the air, the pulverized coal particles gather near the oxygen lance 7, and the concentration of high pulverized coal increases. Fast ignition and flame stability.
其它组成及连接关系与具体实施方式一、二或三相同。Other compositions and connection relationships are the same as in the first, second or third embodiment.
具体实施方式五：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括二次风风筒3，二次风风筒3套装在一次风风筒2上。Embodiment 5: This embodiment is described with reference to FIG. 1 to FIG. 2. The lean coal swirling combustion device in an oxygen/carbon dioxide atmosphere described in this embodiment further includes a secondary air duct 3, and the secondary air duct 3 is set On the
其它组成及连接关系与具体实施方式一、二、三或四相同。Other compositions and connection relationships are the same as in the first, second, third or fourth embodiment.
具体实施方式六：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括三次风风筒4和三次风旋流叶片9，三次风风筒4套装在二次风风筒3上，三次风风筒4和二次风风筒3之间设有三次风旋流叶片9。Embodiment 6: This embodiment will be described with reference to FIG. 1 to FIG. 2. The lean coal swirl combustion device in an oxygen/carbon dioxide atmosphere described in this embodiment further includes a tertiary air duct 4 and a tertiary air swirl blade 9. The air duct 4 is sleeved on the secondary air duct 3 , and a tertiary air swirl blade 9 is arranged between the tertiary air duct 4 and the secondary air duct 3 .
其它组成及连接关系与具体实施方式一、二、三、四或五相同。Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
具体实施方式七：结合图1至图2说明本实施方式，本实施方式所述一种氧气/二氧化碳气氛下贫煤旋流燃烧装置还包括四次风风筒5和四次风旋流叶片10，四次风风筒5套装在三次风风筒4上，四次风旋流叶片10位于四次风风筒5和三次风风筒4之间。Embodiment 7: This embodiment will be described with reference to FIGS. 1 to 2 . The lean coal swirl combustion device in an oxygen/carbon dioxide atmosphere described in this embodiment further includes a quaternary air duct 5 and a quaternary air swirl blade 10 , the tertiary air duct 5 is sleeved on the tertiary air duct 4 , and the swirl blades 10 of the tertiary air are located between the tertiary air duct 5 and the tertiary air duct 4 .
其它组成及连接关系与具体实施方式一、二、三、四、五或六相同。Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
工作原理：working principle:
相对于传统旋流燃烧器取消中心风管，氧气通过氧气调节阀8进入氧气枪7，并通过氧气旋流叶片14进入炉膛助燃，一次风氧浓度约18-23％；煤粉与循环烟气的混合物由煤粉弯头1进入一次风风筒2，在导流锥体6和氧气枪外部导流板11的共同作用下，达到浓淡分离的效果进入炉膛。二次风、三次风及四次风均为再循环烟气与氧气的混合气，分别通过二次风风筒3、三次风风筒4、四次风风筒5在燃烧的不同阶段进入炉膛，二次风氧浓度约28％左右。其中三次风、四次风在喷口处分别通过三次风旋流叶片9、四次风旋流叶片10以旋流状态进入炉膛，保证煤粉的稳定燃烧。Compared with the traditional swirl burner without the central air duct, oxygen enters the oxygen lance 7 through the oxygen regulating valve 8, and enters the furnace through the
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质，在本发明的精神和原则之内，对以上实施例所作的任何简单的修改、等同替换与改进等，均仍属于本发明技术方案的保护范围之内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. The technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications by using the technical content disclosed above to be equivalent examples of equivalent changes, but if they do not depart from the technical solution content of the present invention, according to the present invention Within the spirit and principle of the present invention, any simple modifications, equivalent replacements and improvements made to the above embodiments still fall within the protection scope of the technical solutions of the present invention.
Claims (7)
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| CN1477330A (en) * | 2003-06-23 | 2004-02-25 | 西安交通大学 | A radial thick-thin double-air swirl pulverized coal burner |
| CN103062773A (en) * | 2012-12-25 | 2013-04-24 | 杭州全合科技有限公司 | Dual-purpose burner applicable to high-temperature gas and heavy oil |
| CN110566941A (en) * | 2019-09-19 | 2019-12-13 | 哈尔滨锅炉厂有限责任公司 | novel gas cyclone burner for lean coal and sub-bituminous coal |
| CN111442263A (en) * | 2020-04-16 | 2020-07-24 | 哈尔滨锅炉厂有限责任公司 | Cyclone burner suitable for pulverized coal concentration separation of lignite |
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| CN1477330A (en) * | 2003-06-23 | 2004-02-25 | 西安交通大学 | A radial thick-thin double-air swirl pulverized coal burner |
| CN103062773A (en) * | 2012-12-25 | 2013-04-24 | 杭州全合科技有限公司 | Dual-purpose burner applicable to high-temperature gas and heavy oil |
| CN110566941A (en) * | 2019-09-19 | 2019-12-13 | 哈尔滨锅炉厂有限责任公司 | novel gas cyclone burner for lean coal and sub-bituminous coal |
| CN111442263A (en) * | 2020-04-16 | 2020-07-24 | 哈尔滨锅炉厂有限责任公司 | Cyclone burner suitable for pulverized coal concentration separation of lignite |
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