CN108579303A - A kind of boiler smoke particle purifying device and method - Google Patents
A kind of boiler smoke particle purifying device and method Download PDFInfo
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- CN108579303A CN108579303A CN201810540610.9A CN201810540610A CN108579303A CN 108579303 A CN108579303 A CN 108579303A CN 201810540610 A CN201810540610 A CN 201810540610A CN 108579303 A CN108579303 A CN 108579303A
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- 239000002245 particle Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000779 smoke Substances 0.000 title abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000003546 flue gas Substances 0.000 claims abstract description 85
- 238000000746 purification Methods 0.000 claims abstract description 20
- 239000013618 particulate matter Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000003595 mist Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 25
- 239000002028 Biomass Substances 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 238000010410 dusting Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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Abstract
一种锅炉烟气颗粒物净化装置和方法，属于锅炉设备技术领域，用于对锅炉烟气进行净化。其技术方案是：净化装置由上塔体和下塔体两部分组成，下塔体内安装中心管进行喷淋，将烟气中的部分颗粒清除，上塔体安装多个旋流筒，将其余的烟气颗粒进行清除。本发明具有结构简单、安装方便、体积小、能很好适应生物质锅炉烟气特性的特点，是现有的生物锅炉烟气净化的新设备。本发明是锅炉烟气净化处理的首创，将湿法除尘与干法除尘相结合，利用气、液、固三相粘附原理与惯性除尘原理，采用烟气首先经过湿法预除尘、然后进入到旋流深度净化除尘的设计方式，最终使得外排烟气颗粒物含量得到极大限度的降低，很好地解决了生物质锅炉烟气污染物排放的问题。
A device and method for purifying boiler flue gas particles belong to the technical field of boiler equipment and are used for purifying boiler flue gas. The technical solution is: the purification device consists of an upper tower body and a lower tower body. A central pipe is installed in the lower tower body for spraying to remove part of the particles in the flue gas. Smoke particles are removed. The invention has the characteristics of simple structure, convenient installation, small volume, and can well adapt to the flue gas characteristics of the biomass boiler, and is a new equipment for purifying the flue gas of the existing bioboiler. The present invention is the first to purify boiler flue gas. It combines wet dedusting with dry dedusting, utilizes the principle of gas, liquid and solid three-phase adhesion and inertial dedusting, and adopts the flue gas to go through wet pre-dusting first, and then enters the The design method of deep purification and dust removal in the swirling flow finally greatly reduces the content of particulate matter in the exhausted flue gas, and solves the problem of flue gas pollutant emission from biomass boilers.
Description
技术领域technical field
本发明涉及一种锅炉烟气颗粒物净化的装置和方法，属于锅炉设备技术领域。The invention relates to a device and method for purifying boiler flue gas particles, belonging to the technical field of boiler equipment.
背景技术Background technique
目前应用于锅炉烟气颗粒物治理的方法主要有布袋除尘、电除尘、重力除尘和洗涤除尘四类方法。其中生物质锅炉烟气中颗粒物治理的方法以袋式除尘的应用最为广泛。生物质锅炉主要以生物质能源为燃料，烟气具有成分复杂、粉尘细微、含尘量大的特点。传统布袋除尘虽可通过覆膜的方法使粉尘排放有一定的降低，但受布袋除尘自身的限制，仍然很难对出口颗粒物浓度做进一步的降低。At present, the methods used in the treatment of boiler flue gas particulate matter mainly include four types of methods: bag dust removal, electric dust removal, gravity dust removal and washing dust removal. Among them, bag dust removal is the most widely used method for particulate matter control in biomass boiler flue gas. Biomass boilers mainly use biomass energy as fuel, and the flue gas has the characteristics of complex composition, fine dust, and large dust content. Although the traditional bag filter can reduce the dust emission to a certain extent through the method of film coating, it is still difficult to further reduce the concentration of particulate matter at the outlet due to the limitation of the bag filter itself.
到目前为止，针对生物质锅炉烟气的这种特点，并没有一个成熟的颗粒物净化装置和方法，各项技术仍在探索阶段。So far, there is no mature particle purification device and method for the characteristics of biomass boiler flue gas, and various technologies are still in the exploration stage.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种锅炉烟气颗粒物净化装置和方法，这种净化装置和方法可以应用于生物质锅炉的烟气颗粒物净化，能够很好地解决生物质锅炉中颗粒物含量大、颗粒物细小的问题，实现在恶劣条件下进行颗粒物除尘的目的。The technical problem to be solved by the present invention is to provide a boiler flue gas particle purification device and method, which can be applied to the purification of flue gas particles in biomass boilers, and can well solve the problem of large particle content in biomass boilers. , The problem of fine particles, to achieve the purpose of particle dust removal under harsh conditions.
解决上述技术问题的技术方案是：The technical scheme that solves the above-mentioned technical problem is:
一种锅炉烟气颗粒物净化装置，它由基座、下塔体、上塔体、烟囱组成，下塔体与基座相连接，上塔体连接在下塔体上方，下塔体下端有进气口，下塔体内安装有垂直的中心管，中心管的下部与输水管道相连接，中心管的圆周均布有喷淋孔，上塔体内安装有多个旋流筒，旋流筒垂直放置，多个旋流筒在上塔体的腔室内相互平行密集布设，上塔体的上端有外排口与烟囱相连接。A boiler flue gas particle purification device, which consists of a base, a lower tower body, an upper tower body, and a chimney, the lower tower body is connected to the base, the upper tower body is connected above the lower tower body, and the lower end of the lower tower body has an air intake There is a vertical central pipe installed in the lower tower body, the lower part of the central pipe is connected with the water pipeline, the circumference of the central pipe is evenly distributed with spray holes, and a plurality of swirl tubes are installed in the upper tower body, and the swirl tubes are placed vertically , a plurality of swirl tubes are densely arranged parallel to each other in the chamber of the upper tower body, and the upper end of the upper tower body is connected with the chimney by an outer outlet.
上述锅炉烟气颗粒物净化装置，所述中心管的下端与固定杆和调节杆相连接，固定杆将中心管的下端固定在下塔体的底面上，调节杆的前端与中心管的进水口相连接。In the boiler flue gas particle purifying device described above, the lower end of the central tube is connected with the fixed rod and the adjusting rod, the fixed rod fixes the lower end of the central tube on the bottom surface of the lower tower body, and the front end of the adjusting rod is connected with the water inlet of the central tube .
上述锅炉烟气颗粒物净化装置，所述下塔体的塔壁上分别有检视孔、人孔。In the boiler flue gas particle purifying device described above, inspection holes and manholes are respectively arranged on the tower wall of the lower tower body.
上述锅炉烟气颗粒物净化装置，所述旋流筒由旋流筒壁、盲板、旋流叶片、锥形挡板组成，盲板在旋流筒的中心，旋流叶片环绕在盲板的圆周，旋流叶片的外端与旋流筒壁相连接，锥形挡板位于盲板的下端。In the boiler flue gas particle purification device described above, the swirl tube is composed of a swirl tube wall, a blind plate, a swirl vane, and a conical baffle, the blind plate is at the center of the swirl tube, and the swirl vanes surround the circumference of the blind plate , the outer end of the swirl vane is connected with the wall of the swirl cylinder, and the conical baffle is located at the lower end of the blind plate.
上述锅炉烟气颗粒物净化装置，所述旋流筒的上方有挡水板，旋流筒的下方有集水槽。In the boiler flue gas particle purifying device described above, there is a water baffle above the swirl cylinder, and a water collection tank below the swirl cylinder.
一种使用上述装置进行锅炉烟气颗粒净化的方法，它采用以下步骤进行：A method for purifying boiler flue gas particles using the above-mentioned device, which adopts the following steps:
a. 锅炉烟气自下塔体的进气口进入下塔体内，进口气流速度为12-14m/s；a. Boiler flue gas enters the lower tower body from the air inlet of the lower tower body, and the inlet air velocity is 12-14m/s;
b.工艺水经过中心管从喷淋孔呈雾状喷出，供水压力最低0.2MPa，工艺水喷射时间15s，之后暂停15s，如此循环往复，水量消耗5m3/h，喷射出的雾状水与烟气中的颗粒物相互包裹，含有烟气颗粒的水落在下塔体底面，去除烟气中的部分颗粒物；b. The process water is sprayed from the spray hole through the central pipe in a mist form, the minimum water supply pressure is 0.2MPa, the process water spray time is 15s, and then pauses for 15s, so that the cycle is repeated, the water consumption is 5m 3 /h, and the sprayed water is sprayed Wrapped with the particulate matter in the flue gas, the water containing the flue gas particles falls on the bottom of the lower tower to remove part of the particulate matter in the flue gas;
c.夹带部分水汽与颗粒物继续上行至上塔体的下端，进入上塔体的旋流筒内；c. Part of the entrained water vapor and particles continue to go up to the lower end of the upper tower body and enter the swirl tube of the upper tower body;
d.进入旋流筒的烟气在旋流叶片的定向导流作用下沿旋流筒壁逐渐上行，烟气上行速度为3.5m/s-4m/s，由于旋流筒的加速作用，烟气在旋流筒中的旋流速度为17m/s-18m/s，在高速的上行和旋流过程中通过离心力作用，烟气中夹带的颗粒物和雾滴得到同时脱除，颗粒物与雾滴沿旋流筒壁下行，在集水槽处收集后统一排出，净化后烟气通过挡水板经外排口排出，排出的烟气速度为11m/s-12m/s。d. The flue gas entering the cyclone cylinder gradually ascends along the wall of the cyclone cylinder under the directional flow of the swirl blades, and the upward speed of the flue gas is 3.5m/s-4m/s. Due to the acceleration of the cyclone cylinder, the smoke The swirl speed of the gas in the swirl tube is 17m/s-18m/s. During the high-speed upward and swirling process, the particulate matter and mist droplets entrained in the flue gas are removed at the same time through the action of centrifugal force. The wall of the cyclone goes down, and it is collected at the sump and discharged uniformly. The purified flue gas is discharged through the water baffle and the outer discharge port. The speed of the discharged flue gas is 11m/s-12m/s.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明的锅炉烟气颗粒净化装置由上塔体和下塔体两部分组成，下塔体内安装中心管进行喷淋，将烟气中的部分颗粒清除，上塔体安装多个旋流筒，将其余的烟气颗粒进行清除，达到彻底清除烟气颗粒的目的。The boiler flue gas particle purification device of the present invention is composed of an upper tower body and a lower tower body. A central pipe is installed in the lower tower body for spraying to remove part of the particles in the flue gas. A plurality of swirl tubes are installed on the upper tower body. The rest of the smoke particles are removed to achieve the purpose of completely removing the smoke particles.
本发明的锅炉烟气颗粒物净化装置具有结构简单、安装方便、体积小、能很好适应生物质锅炉烟气特性的特点，是现有的生物锅炉烟气净化的新设备。The device for purifying particulate matter in boiler flue gas of the present invention has the characteristics of simple structure, convenient installation, small volume, and can well adapt to the characteristics of flue gas of biomass boilers, and is a new equipment for purifying flue gas of existing bio-boilers.
本发明是锅炉烟气净化处理的首创，将湿法除尘与干法除尘相结合，利用气、液、固三相粘附原理与惯性除尘原理，采用烟气首先经过湿法预除尘、然后进入到旋流深度净化除尘的设计方式，最终使得外排烟气颗粒物含量得到极大限度的降低，很好地解决了生物质锅炉烟气污染物排放的问题，值得在行业内推广应用。The present invention is the first to purify boiler flue gas. It combines wet dedusting with dry dedusting, utilizes the principle of gas, liquid and solid three-phase adhesion and inertial dedusting, and adopts the flue gas to go through wet pre-dusting first, and then enters the The design method of deep purification and dust removal in swirling flow finally greatly reduces the content of particulate matter in the exhausted flue gas, which solves the problem of biomass boiler flue gas pollutant emission well, and is worthy of promotion and application in the industry.
附图说明Description of drawings
图1是本发明的锅炉烟气颗粒物净化装置的结构示意图；Fig. 1 is the structural representation of boiler flue gas particle purifying device of the present invention;
图2是上塔体的旋流筒布置示意图；Fig. 2 is a schematic diagram of the layout of the cyclone cylinder on the upper tower body;
图3是上塔体中一个旋流筒部分横向断面俯视图。Fig. 3 is a partial cross-sectional top view of a swirl tube in the upper tower body.
图中标记如下：基座1、下塔体2、上塔体3、烟囱4、进气口5、中心管6、喷淋孔7、固定杆8、调节杆9、检视孔10、人孔11、旋流筒12、挡水板13、外排口14、集水槽15、旋流筒壁16、盲板17、旋流叶片18、锥形挡板19、塔壁20。The marks in the figure are as follows: base 1, lower tower body 2, upper tower body 3, chimney 4, air inlet 5, central pipe 6, spray hole 7, fixed rod 8, adjustment rod 9, inspection hole 10, manhole 11. Swirl cylinder 12, water retaining plate 13, outer outlet 14, sump 15, swirl cylinder wall 16, blind plate 17, swirl blade 18, conical baffle 19, tower wall 20.
具体实施方式Detailed ways
本发明的锅炉烟气颗粒物净化装置由基座1、下塔体2、上塔体3、烟囱4组成。The boiler flue gas particle purification device of the present invention is composed of a base 1 , a lower tower body 2 , an upper tower body 3 and a chimney 4 .
图1显示，下塔体2与基座1相连接，上塔体3连接在下塔体2上方，上塔体3的上端连接烟囱4。Fig. 1 shows that the lower tower body 2 is connected with the base 1, the upper tower body 3 is connected above the lower tower body 2, and the upper end of the upper tower body 3 is connected with the chimney 4.
图1显示，下塔体2下端有进气口5，锅炉烟气从进气口5进入下塔体2中。下塔体2内安装有垂直的中心管6，中心管6的下部与输水管道相连接，中心管6的圆周均布有喷淋孔7。水经过中心管6从喷淋孔7呈雾状喷出，清除烟气颗粒。FIG. 1 shows that there is an air inlet 5 at the lower end of the lower tower body 2 , and boiler flue gas enters the lower tower body 2 through the air inlet 5 . A vertical center pipe 6 is installed in the lower tower body 2 , the bottom of the center pipe 6 is connected with the water delivery pipeline, and the circumference of the center pipe 6 is evenly distributed with spray holes 7 . The water is sprayed from the spray hole 7 through the central pipe 6 to remove the smoke particles.
图1显示，中心管6的下端与固定杆8和调节杆9相连接，固定杆8将中心管6的下端固定在下塔体2的底面上，调节杆9的前端与中心管6的进水口相连接。调节杆9可对中心管6进行微小调整，使水以雾滴状态喷出，覆盖整个中心管6湿式除尘区域，对经过其中的烟气起到初步去除颗粒物的效果。Fig. 1 shows that the lower end of the central pipe 6 is connected with the fixed rod 8 and the adjusting rod 9, the fixed rod 8 fixes the lower end of the central pipe 6 on the bottom surface of the lower tower body 2, and the front end of the adjusting rod 9 is connected with the water inlet of the central pipe 6 connected. The adjusting rod 9 can make small adjustments to the central pipe 6, so that the water is sprayed out in the form of mist, covering the entire wet dust removal area of the central pipe 6, and has a preliminary effect of removing particulate matter from the flue gas passing through it.
图1显示，下塔体2的塔壁20上分别有检视孔10、人孔11。在调节杆9上方设置有检视10孔，用于观察中心管6情况，在下塔体2的塔壁20上方设置有人孔11，用于对中心管6除尘区域进行观察与检修。Fig. 1 shows that inspection hole 10 and manhole 11 are respectively arranged on the tower wall 20 of lower tower body 2. An inspection hole 10 is provided above the adjusting rod 9 for observing the condition of the central pipe 6 , and a manhole 11 is provided above the tower wall 20 of the lower tower body 2 for observing and overhauling the dust removal area of the central pipe 6 .
图1、2显示，上塔体3内安装有多个旋流筒12，旋流筒12垂直放置，多个旋流筒12在上塔体3的腔室内相互平行密集布设，对烟气进行旋流净化除尘。Figures 1 and 2 show that a plurality of swirl tubes 12 are installed in the upper tower body 3, and the swirl tubes 12 are vertically placed, and a plurality of swirl tubes 12 are arranged in parallel and densely in the chamber of the upper tower body 3, and the flue gas is exhausted. Cyclone purification and dust removal.
图1显示，为更好的拦截烟气上行中的水分，旋流筒12的上方有挡水板13，旋流筒12的下方有集水槽15。烟气中的颗粒物与雾滴沿旋流筒壁16下行，通过集水槽15收集后统一排出，净化后烟气通过挡水板13经外排口14排出。As shown in FIG. 1 , in order to better intercept the moisture in the upward flow of flue gas, there is a water baffle 13 above the swirl cylinder 12 , and a water collection tank 15 is located below the swirl cylinder 12 . Particles and mist in the flue gas go down along the wall 16 of the swirl tube, are collected by the sump 15 and discharged uniformly, and the purified flue gas is discharged through the water baffle 13 through the outlet 14 .
图1、3显示，旋流筒12由旋流筒壁16、盲板17、旋流叶片18、锥形挡板19组成，盲板17在旋流筒12的中心，旋流叶片18环绕在盲板17的圆周，旋流叶片18的外端与旋流筒壁16相连接，锥形挡板19位于盲板17的下端。Figures 1 and 3 show that the swirl tube 12 is composed of a swirl tube wall 16, a blind plate 17, a swirl vane 18, and a conical baffle 19. The blind plate 17 is at the center of the swirl tube 12, and the swirl vane 18 surrounds it. The circumference of the blind plate 17 and the outer end of the swirl vane 18 are connected with the swirl wall 16 , and the tapered baffle 19 is located at the lower end of the blind plate 17 .
旋流叶片采用交叠嵌套式的布置方式，这种布置方式可增加烟气旋流通道，使烟气旋流得到增强，提高旋流除尘效率。The swirl vanes adopt an overlapping and nested arrangement, which can increase the flue gas swirl channels, enhance the flue gas swirl, and improve the swirl dust removal efficiency.
该布置方式由图3可以看出，其中旋流叶片Aa边在上，旋流叶片A1a1在下。这种布置方式可增加烟气旋流通道，使烟气旋流得到增强，提高旋流除尘效果。This arrangement can be seen from FIG. 3 , where the side of the swirl vane Aa is on the top, and the side of the swirl vane A1a1 is on the bottom. This arrangement can increase the flue gas swirl flow channel, enhance the flue gas swirl flow, and improve the swirl dust removal effect.
本发明的锅炉烟气颗粒净化的方法，它采用以下步骤进行：The method for boiler flue gas particle purification of the present invention, it adopts following steps to carry out:
e. 锅炉烟气自下塔体2的进气口5进入下塔体2内，进口气流速度为12-14m/s；e. Boiler flue gas enters the lower tower body 2 from the air inlet 5 of the lower tower body 2, and the inlet air velocity is 12-14m/s;
f.工艺水经过中心管6从喷淋孔7呈雾状喷出，供水压力最低0.2MPa，工艺水喷射时间15s，之后暂停15s，如此循环往复，水量消耗5m3/h，喷射出的雾状水与烟气中的颗粒物相互包裹，含有烟气颗粒的水落在下塔体2底面，去除烟气中的部分颗粒物；f. The process water is sprayed in mist form from the spray hole 7 through the central pipe 6 , the minimum water supply pressure is 0.2MPa, the process water spray time is 15s, and then pauses for 15s. The water and the particulate matter in the flue gas wrap each other, and the water containing the flue gas particles falls on the bottom of the lower tower body 2 to remove part of the particulate matter in the flue gas;
g.夹带部分水汽与颗粒物继续上行至上塔体3的下端，进入上塔体3的旋流筒12内；g. Entrained part of the water vapor and particulate matter continue to go up to the lower end of the upper tower body 3, and enter the swirl tube 12 of the upper tower body 3;
h.进入旋流筒12的烟气在旋流叶片18的定向导流作用下沿旋流筒壁16逐渐上行，烟气上行速度为3.5m/s-4m/s，由于旋流筒12的加速作用，烟气在旋流筒12中的旋流速度为17m/s-18m/s，在高速的上行和旋流过程中通过离心力作用，烟气中夹带的颗粒物和雾滴得到同时脱除，颗粒物与雾滴沿旋流筒壁16下行，在集水槽15处收集后统一排出，净化后烟气通过挡水板13经外排口14排出，排出的烟气速度为11m/s-12m/s。h. The flue gas entering the swirl tube 12 gradually ascends along the swirl tube wall 16 under the directional flow of the swirl blades 18, and the upward speed of the flue gas is 3.5m/s-4m/s, due to the swirl tube 12 Acceleration effect, the swirling velocity of the flue gas in the swirl tube 12 is 17m/s-18m/s, and the particles and mist entrained in the flue gas are simultaneously removed through the action of centrifugal force during the high-speed upward and swirling process , particles and mist descend along the wall 16 of the swirl tube, and are collected at the sump 15 before being discharged uniformly. After purification, the flue gas is discharged through the water baffle 13 and the outer discharge port 14, and the speed of the discharged flue gas is 11m/s-12m /s.
本发明解决了生物质锅炉烟气颗粒物排放问题，实现了生物质锅炉烟气颗粒物的深度处理。The invention solves the problem of biomass boiler flue gas particle discharge and realizes advanced treatment of biomass boiler flue gas particles.
本发明具有以下特点：The present invention has the following characteristics:
本发明将湿式除尘与干法除尘相结合，利用气、液、固三相粘附原理与惯性除尘原理，综合湿式除尘与干法除尘的优点，对生物质锅炉烟气颗粒物进行了高效去除。The invention combines wet dust removal and dry dust removal, utilizes the gas, liquid and solid three-phase adhesion principle and inertial dust removal principle, and combines the advantages of wet dust removal and dry dust removal to efficiently remove particulate matter in biomass boiler flue gas.
本发明采用烟气首先经过湿法预除尘、然后进入到旋流深度净化除尘的设计方式，避免了通常由于涉及湿法除尘过程而产生的烟囱雨现象。The present invention adopts the design method that the flue gas firstly passes through the wet pre-dust removal, and then enters the swirling flow for deep purification and dust removal, so as to avoid the chimney rain phenomenon usually caused by the wet dust removal process.
本发明的旋流筒中的旋流叶片采用交叠嵌套式的布置方式，这种布置方式可增加烟气旋流通道，使烟气旋流得到增强，提高旋流除尘效率。The swirl vanes in the swirl cylinder of the present invention adopt an overlapping and nested arrangement, which can increase the flue gas swirl channels, enhance the flue gas swirl flow, and improve the swirl dust removal efficiency.
Claims (6)
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