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WO2012172872A1 - Collecteur de poussière multicyclonique à écoulement axial - Google Patents

Collecteur de poussière multicyclonique à écoulement axial Download PDF

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Publication number
WO2012172872A1
WO2012172872A1 PCT/JP2012/061174 JP2012061174W WO2012172872A1 WO 2012172872 A1 WO2012172872 A1 WO 2012172872A1 JP 2012061174 W JP2012061174 W JP 2012061174W WO 2012172872 A1 WO2012172872 A1 WO 2012172872A1
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WO
WIPO (PCT)
Prior art keywords
dust
chamber
gas
axial flow
axial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/061174
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English (en)
Japanese (ja)
Inventor
信介 藤田
関口　毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JP Steel Plantech Co
Original Assignee
JP Steel Plantech Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JP Steel Plantech Co filed Critical JP Steel Plantech Co
Publication of WO2012172872A1 publication Critical patent/WO2012172872A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/28—Multiple arrangement thereof for parallel flow

Definitions

  • the present invention relates to an axial flow type multi-cyclone dust collector that separates and removes dust from a gas containing dust (hereinafter referred to as “dust-containing gas”).
  • an axial-flow multi-cyclone dust collector for example, in a gas circulation unit of a coke dry fire extinguishing equipment (hereinafter sometimes referred to as “CDQ”) at a steelmaking factory, a large amount of dust (dust) generated from a cooling tower is primary. Some are used as a secondary dust collector for further collecting the dust-containing gas after being gradually dusted.
  • Axial-flow multi-cyclone dust collectors generally have a gas introduction chamber into which dust-containing gas is introduced, a dust collection chamber that can store dust separated and removed from the dust-containing gas, and a clean gas from which dust is removed from the dust-containing gas. Is composed of three chambers, a cleaning gas chamber for collecting and exhausting the gas.
  • the flow path is divided into a top plate and a lower plate, and a plurality of axial-flow cyclones are arranged and arranged at predetermined intervals in a grid pattern or a staggered pattern in the flow path. .
  • the dust-containing gas introduced into the gas introduction chamber passes through a plurality of axial-flow cyclones, so that the dust is separated, the separated dust is stored in the dust-collecting chamber, and the dust is removed from the dust-containing gas.
  • the clean gas collected in the cleaning gas chamber is exhausted.
  • Patent Documents 1 and 2 Examples of the axial flow type multi-cyclone dust collector as described above are disclosed in Patent Documents 1 and 2, for example.
  • the gas introduction chamber is generally rectangular.
  • the reason why the gas introduction chamber is rectangular is as follows.
  • the gas flow is generally such that dust-containing gas is introduced into the gas introduction chamber from the horizontal direction and exhausted to the opposite side, or dust-containing gas is introduced from the horizontal direction into the gas introduction chamber and exhausted directly above. Is.
  • the shape of the gas introduction chamber is naturally rectangular.
  • the dust-containing gas is introduced from both opposing side surfaces of the rectangular gas introduction chamber and exhausted from one adjacent surface. There are also examples.
  • JP 2008-80244 A Japanese Patent Laid-Open No. 2004-322086
  • the most important thing in the axial flow type multi-cyclone dust collector is to introduce the dust-containing gas into the plurality of axial flow type cyclones arranged in the gas introduction chamber by distributing them efficiently and evenly.
  • the conventional gas introduction chamber has a rectangular shape, the gas flow direction is deviated at the four corners of the gas introduction chamber, resulting in uneven flow.
  • the present invention has been made to solve such a problem, and an axial flow type multi-cyclone dust collector capable of efficiently distributing and introducing dust-containing gas to a plurality of axial flow type cyclones arranged in a gas introduction chamber.
  • the purpose is to obtain.
  • An axial-flow multicyclonic dust collector includes a gas introduction chamber in which a dust-containing gas is introduced and a plurality of axial-flow cyclones is installed, and the dust-containing gas by the plurality of axial-flow cyclones.
  • a dust collection chamber for storing the dust separated from the dust gas, and a cleaning gas chamber for collecting the cleaning gas from which the dust is separated from the dust-containing gas
  • the gas introduction chamber includes a lower chamber formed of a ring-shaped flow path having an upper surface formed so as to surround an upper outer periphery of the dust collection chamber and a gas inlet into which dust-containing gas is introduced.
  • the upper chamber is provided above the lower chamber and communicates with the opening of the lower chamber and is provided with the plurality of axial-flow cyclones.
  • an inlet casing for introducing dust-containing gas into the gas inlet is provided, and both side surfaces of the inlet casing are outer circumferences of the lower chamber.
  • the rectifying plate is disposed in the tangential direction of the surface, and a rectifying plate is installed in the inlet casing.
  • a flow rate adjusting plate for preventing a drift is installed at a boundary portion between the upper chamber and the lower chamber. Is.
  • a flow dividing plate is provided at the gas inlet for diverting the gas flow to both sides of the lower chamber. It is.
  • An axial-flow multicyclonic dust collector is separated from the dust-containing gas by a gas introduction chamber into which dust-containing gas is introduced and a plurality of axial-flow cyclones are installed, and the plurality of axial-flow cyclones.
  • a lower chamber formed of a ring-shaped flow path having an upper surface opened so as to surround an upper outer periphery of the dust collecting chamber and an inlet is formed, and communicates with the opening of the lower chamber above the lower chamber
  • An upper chamber in which the plurality of axial-flow cyclones are installed so that the dust-containing gas introduced into the lower chamber is introduced into the upper chamber from the upper opening of the ring-shaped flow path, and the gas flow is circular.
  • Direction from the circumferential direction to the center Since, in a plurality of axial flow cyclones installed in the upper chamber can uniformly supplied to the dust-containing gas, thereby improving the dust collecting efficiency.
  • FIG. 2 is an AA view of FIG. 1.
  • FIG. 3 is a view taken along the line BB in FIG. 1. It is explanatory drawing of an axial flow type cyclone.
  • the axial-flow multicyclonic dust collector 1 introduces a dust-containing gas and stores a gas introduction chamber 3 in which a plurality of axial-flow cyclones 11 are installed, and dust separated from the dust-containing gas.
  • An inverted conical dust collecting chamber 5 and a cleaning gas chamber 7 for collecting a cleaning gas from which dust is separated from the dust-containing gas are provided.
  • the gas introduction chamber 3 includes a lower chamber 3a formed of a ring-shaped flow passage having an upper surface formed so as to surround the upper outer periphery of the dust collection chamber 5 and a gas inlet 9 into which dust-containing gas is introduced.
  • the upper chamber 3b is formed above the lower chamber 3a so as to communicate with the lower chamber 3a and in which a plurality of axial-flow cyclones 11 are installed.
  • the gas inlet 9 is provided with an inlet casing 13 for guiding the dust-containing gas to the gas inlet 9. As shown in FIG. 2, both side surfaces 13a and 13b of the inlet casing 13 are arranged in the tangential direction of the outer peripheral surface of the lower chamber 3a.
  • a rectifying plate 15 for making the gas flow uniform is installed in the inlet casing 13.
  • the lower chamber 3 a is installed so as to surround the upper outer periphery of the dust collection chamber 5, a cylindrical outer wall portion 17, a bottom portion 19 connected to the dust collection chamber 5 from a lower portion of the outer wall portion 17, and an outer wall of the dust collection chamber 5.
  • the upper surface formed by 5a is carrying out the ring shape which opened.
  • the outer wall 5a of the dust collection chamber 5 is used as the inner wall of the lower chamber 3a.
  • the outer wall 5a of the dust collection chamber 5 forms a part of the lower chamber 3a, wear due to contact with the dust-containing gas can be considered. Therefore, it is preferable to install a protective plate (not shown) for preventing wear on a part of the outer wall 5a of the dust collection chamber 5 forming the lower chamber 3a.
  • the gas inlet 9 in the lower chamber 3a is provided with a flow dividing plate 21 for diverting the gas flow to both sides of the lower chamber 3a.
  • the flow dividing plate 21 is installed so as to be directed in the tangential direction of the outer wall 5 a of the dust collection chamber 5.
  • the upper chamber 3b is formed above the lower chamber 3a so as to communicate with the lower chamber 3a, and a plurality of axial flow type cyclones 11 are installed in the upper chamber 3b.
  • the upper chamber 3b is installed at the boundary between the outer wall 17 extending continuously upward from the outer wall 17 of the lower chamber 3a, the top plate 23 installed at the upper end of the outer wall 17, and the dust collection chamber 5.
  • the lower plate 25 is formed.
  • the lower plate 25 is provided with a plurality of axial flow type cyclones 11.
  • An example of the arrangement of the axial flow type cyclone 11 is shown in FIG. As shown in FIG. 3, the axial flow type cyclone 11 is arranged so as to provide a gas guide space 27 that also serves as a maintenance passage at an appropriate position so that the gas flow is not hindered.
  • the axial-flow type cyclone 11 for example, a known one disclosed in Patent Document 1 can be used. As shown in FIG. 4, the axial-flow cyclone 11 includes an axial-flow cyclone blade 11 a disposed on the lower plate 25, an axial-flow cyclone outer cylinder 11 b installed toward the lower side of the lower plate 25, An axial-flow type cyclone inner cylinder 11c having a lower end inserted into the axial-flow type cyclone outer cylinder 11b and an upper end extending above the top plate 23 is provided. Since the axial-flow type cyclone inner cylinder 11c is worn by being exposed to the dust-containing gas, it is preferable to provide a protective plate 29 for preventing wear.
  • a flow rate adjusting plate 31 for adjusting the gas flow flowing from the lower chamber 3a to the upper chamber 3b is installed at the boundary between the lower chamber 3a and the upper chamber 3b near the gas inlet 9. ing. Near the gas inlet 9, there is a possibility that the amount of gas flowing from the lower chamber 3a to the upper chamber 3b may increase. By adjusting this, an even gas flow from the lower chamber 3a to the upper chamber 3b is realized. is there.
  • the dust collection chamber 5 stores the dust separated from the dust-containing gas.
  • the dust collection chamber 5 of the present embodiment is formed by an inverted conical hopper type container.
  • a plurality of legs 33 for supporting the container are provided on the outer periphery of the container.
  • a discharge port 35 for discharging stored dust is provided at the lower end of the dust collection chamber 5, and a discharge device 37 for discharging dust from the discharge port 35 is installed at the discharge port 35 at every desired time. ing.
  • the outer wall 5a of the dust collection chamber 5 also serves as the inner wall of the lower chamber 3a in the gas introduction chamber 3.
  • the cleaning gas chamber 7 collects the cleaning gas from which dust is separated from the dust-containing gas, and is formed by a cylindrical container in the present embodiment.
  • the cleaning gas discharged from the axial flow type cyclone inner cylinder 11 c of each axial flow type cyclone 11 is collected in the cleaning gas chamber 7 and discharged from the cleaning gas discharge port 39.
  • the dust-containing gas supplied to the inlet casing 13 is rectified by the rectifying plate 15 and guided to the gas inlet 9 of the lower chamber 3 a in the gas introduction chamber 3.
  • the dust-containing gas guided to the gas inlet 9 is branched left and right by the flow dividing plate 21 and introduced into the ring-shaped lower chamber 3a.
  • the dust-containing gas introduced into the lower chamber 3a changes its flow upward and flows into the upper chamber 3b.
  • the inflow path of the dust-containing gas to the upper chamber 3b is directed from the circumference to the circle center, the distances between arbitrary points on the circle center and the circumference are all equal, and the lower plate of the upper chamber 3b.
  • the dust-containing gas can be evenly distributed to the plurality of axial flow type cyclones 11 arranged in 25. Further, it is desirable that the outer wall surface 17 constituting the inflow path of the dust-containing gas into the upper chamber 3b is made to be a circular shape close to a streamline rather than a rectangular shape, because the fluid resistance can be reduced.
  • the circumferential length which is the horizontal length of the dust-containing gas flow path
  • the height of the dust-containing gas flow path in the vertical direction can be reduced. Even so, the dust-containing gas flow rate can be adjusted to an appropriate flow rate without any increase in uneven wear, and thus the entire apparatus can be made compact.
  • the dust-containing gas flowing into the upper chamber 3b passes through the axial-flow cyclone blade 11a installed on the lower plate 25, and dust is separated and removed by the axial-flow cyclone outer cylinder 11b. It is guided to the cleaning gas chamber 7 formed above the top plate 23 through the inside. The clean gas guided to the cleaning gas chamber 7 can be collected and exhausted in any direction. On the other hand, the separated and removed dust is stored in the dust collection chamber 5 and is carried out of the system by a discharge device 37 below the dust collection chamber 5 when a predetermined time has elapsed.
  • the gas introduction chamber 3 is composed of the ring-shaped lower chamber 3a and the upper chamber 3b formed above the lower chamber 3a, and the dust containing material introduced into the lower chamber 3a. Since the gas is supplied to the upper chamber 3b from the entire circumference of the lower chamber 3a, the dust-containing gas is evenly distributed evenly to the axial-flow cyclone 11 arranged at a predetermined interval on the lower plate 25 of the upper chamber 3b. Distributing supply can be achieved, and the dust collection effect can be improved as compared with the case where the gas introduction chamber is rectangular, and the wear of the parts can be extended and the life can be prevented from being shortened.
  • the rigidity of the container is increased with respect to the internal pressure (which may be positive or negative), and reinforcement is performed. It can also be reduced, leading to lower transportation costs and easier construction.
  • the gas introduction chamber 3, the dust collection chamber 5 and the cleaning gas chamber 7 are made circular, the circumference can be made shorter than that of the rectangular case, so that the construction area of the coating and heat insulating material is reduced and the construction cost is reduced.
  • the dust collection chamber 5 is formed by a round (circular) hopper on an inverted cone, so that the container shape is minimized and compact as long as the inclination angle is the same as that of the square hopper.
  • the inclination angle at the corner portion is the most gradual, so it is necessary to set the inclination angle at the corner portion to be greater than the friction angle of the powder.
  • the inclination angles are all the same in the circumferential direction, and therefore the inclination angle may be set to be equal to or greater than the powder friction angle. If the angle of inclination of the corner of the square hopper is the same as that of the circular hopper, the circular hopper is more compact than the square hopper because the flat cross section of the circular hopper is inscribed in the flat cross section of the square hopper. It can be shaped.

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  • Cyclones (AREA)

Abstract

L'invention permet d'obtenir un collecteur de poussière multicyclonique à écoulement axial dans lequel un gaz chargé de poussière peut être équitablement réparti et introduit de manière efficace dans une pluralité de cyclones à écoulement axial rangés dans une chambre d'introduction de gaz. Plus précisément, l'invention concerne un collecteur de poussière multicyclonique à écoulement axial (1) qui est équipé : de ladite chambre d'introduction de gaz (3) dans laquelle le gaz chargé de poussière est introduit, et ladite pluralité de cyclones à écoulement axial (11) est placée; d'une chambre de collecte de poussière (5) dans laquelle sont accumulées des particules de poussière séparées du gaz chargé de poussière à l'aide de la pluralité de cyclones à écoulement axial (11); et d'une chambre de gaz épuré (7) dans laquelle est collecté un gaz épuré séparé de la poussière. La chambre d'introduction de gaz (3) est caractéristique en ce qu'elle est équipée : d'une chambre de partie inférieure (3a) dans laquelle est formée une ouverture d'entrée de gaz (9) par laquelle est introduit le gaz chargé de poussière, et qui est constituée d'un trajet d'écoulement de forme annulaire dont une surface est ouverte et formée de manière à entourer la périphérie externe de la partie supérieure de la chambre de collecte de poussière (5); et d'une chambre de partie supérieure (3b) qui communique avec l'ouverture de la chambre de partie inférieure (3a) au-dessus de cette dernière, et dans laquelle est placée la pluralité de cyclones à écoulement axial (11).
PCT/JP2012/061174 2011-06-14 2012-04-26 Collecteur de poussière multicyclonique à écoulement axial Ceased WO2012172872A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-131767 2011-06-14
JP2011131767A JP2013000623A (ja) 2011-06-14 2011-06-14 軸流式マルチサイクロン集塵機

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WO2012172872A1 true WO2012172872A1 (fr) 2012-12-20

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JP (1) JP2013000623A (fr)
CN (2) CN202803438U (fr)
WO (1) WO2012172872A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104992804A (zh) * 2015-07-30 2015-10-21 常州市武进凯利达电子有限公司 便于维修的旋转电位器
CN112473309A (zh) * 2020-12-22 2021-03-12 南昌大学 具有错流过滤的复合式粉尘收集系统
CN114984673A (zh) * 2022-04-29 2022-09-02 中冶长天国际工程有限责任公司 除尘器及除尘方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013000623A (ja) * 2011-06-14 2013-01-07 Jp Steel Plantech Co 軸流式マルチサイクロン集塵機
CN105080736A (zh) * 2014-05-21 2015-11-25 德昌电机(深圳)有限公司 分离装置
CN104232114B (zh) * 2014-09-17 2016-06-29 西安华江环保科技股份有限公司 一种干熄焦二次除尘器
EP3292912B1 (fr) * 2016-09-09 2019-12-25 Loesche GmbH Procédé de fonctionnement d'un multicyclone pour la séparation de grains fins et ultrafins ainsi que multicyclones
CN110170187B (zh) * 2019-05-24 2024-03-22 河南省地质矿产勘查开发局第一地质环境调查院 一种用于地热流体的汽水分离装置及气体处理方法

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DE660872C (de) * 1938-06-04 Metallgesellschaft Akt Ges Fliehkraftstaubabscheider
US2268170A (en) * 1938-11-08 1941-12-30 Western Precipitation Corp Dust collecting system
JPS55152514A (en) * 1979-05-18 1980-11-27 Hitachi Ltd Dry scrubber
JP2005224602A (ja) * 2004-02-11 2005-08-25 Samsung Kwangju Electronics Co Ltd サイクロン集塵装置
JP2005230633A (ja) * 2004-02-18 2005-09-02 Tama Tlo Kk サイクロン型遠心分離装置
JP2006167708A (ja) * 2004-12-16 2006-06-29 Samsung Electronics Co Ltd サイクロン空気清浄機
JP2008080244A (ja) * 2006-09-27 2008-04-10 Nippon Steel Corp マルチサイクロン式集塵機

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KR940002128Y1 (ko) * 1992-04-21 1994-04-06 배순훈 비데오 테이프 레코더의 테이프 로딩장치
JPH08299728A (ja) * 1995-05-12 1996-11-19 Toyo Gijutsu Kogyo Kk サイクロン型集塵装置
CN101505852B (zh) * 2006-11-06 2013-03-27 三菱重工业株式会社 集尘装置
CN101259356B (zh) * 2008-04-16 2011-04-27 倪如宝 一种除尘设备
JP2013000623A (ja) * 2011-06-14 2013-01-07 Jp Steel Plantech Co 軸流式マルチサイクロン集塵機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE660872C (de) * 1938-06-04 Metallgesellschaft Akt Ges Fliehkraftstaubabscheider
US2268170A (en) * 1938-11-08 1941-12-30 Western Precipitation Corp Dust collecting system
JPS55152514A (en) * 1979-05-18 1980-11-27 Hitachi Ltd Dry scrubber
JP2005224602A (ja) * 2004-02-11 2005-08-25 Samsung Kwangju Electronics Co Ltd サイクロン集塵装置
JP2005230633A (ja) * 2004-02-18 2005-09-02 Tama Tlo Kk サイクロン型遠心分離装置
JP2006167708A (ja) * 2004-12-16 2006-06-29 Samsung Electronics Co Ltd サイクロン空気清浄機
JP2008080244A (ja) * 2006-09-27 2008-04-10 Nippon Steel Corp マルチサイクロン式集塵機

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104992804A (zh) * 2015-07-30 2015-10-21 常州市武进凯利达电子有限公司 便于维修的旋转电位器
CN112473309A (zh) * 2020-12-22 2021-03-12 南昌大学 具有错流过滤的复合式粉尘收集系统
CN112473309B (zh) * 2020-12-22 2024-05-03 南昌大学 具有错流过滤的复合式粉尘收集系统
CN114984673A (zh) * 2022-04-29 2022-09-02 中冶长天国际工程有限责任公司 除尘器及除尘方法
CN114984673B (zh) * 2022-04-29 2023-09-01 中冶长天国际工程有限责任公司 除尘器及除尘方法

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CN102824967A (zh) 2012-12-19
JP2013000623A (ja) 2013-01-07
CN202803438U (zh) 2013-03-20

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