WO2021235587A1 - Appareil pour empêcher la redispersion de la poussière dans un collecteur de poussière à filtre comprenant un module de génération de rideau d'air de protection de sac filtrant, et collecteur de poussière de filtre le comprenant - Google Patents

Appareil pour empêcher la redispersion de la poussière dans un collecteur de poussière à filtre comprenant un module de génération de rideau d'air de protection de sac filtrant, et collecteur de poussière de filtre le comprenant Download PDF

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Publication number
WO2021235587A1
WO2021235587A1 PCT/KR2020/007336 KR2020007336W WO2021235587A1 WO 2021235587 A1 WO2021235587 A1 WO 2021235587A1 KR 2020007336 W KR2020007336 W KR 2020007336W WO 2021235587 A1 WO2021235587 A1 WO 2021235587A1
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WO
WIPO (PCT)
Prior art keywords
filter
dust
cylindrical member
bag
housing
Prior art date
Application number
PCT/KR2020/007336
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English (en)
Korean (ko)
Inventor
고대동
Original Assignee
주식회사 피엠테크솔루션
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 주식회사 피엠테크솔루션 filed Critical 주식회사 피엠테크솔루션
Priority to JP2022563431A priority Critical patent/JP7453414B2/ja
Publication of WO2021235587A1 publication Critical patent/WO2021235587A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Definitions

  • the present invention relates to an apparatus for preventing dust re-scattering of a filter bag including a filter bag protection air curtain generating module, and to a filter dust collector having the same, and more particularly, by generating an air curtain around the filter bag in the apparatus for preventing dust re-scattering of the filter bag
  • a filter bag protection air curtain generating module capable of preventing the downdraft generated by the dust re-scattering prevention device from being dispersed and damaging the filter bag.
  • filter and dust collectors are used to collect particulate pollutants such as discharged dust.
  • a bag filter is installed in such a filter and dust collector to filter fine dust particles with high efficiency.
  • a filter When a filter is used, it has the advantage that the dust collection efficiency can be increased by increasing the particle capture rate.
  • the air containing dust is introduced through the inlet at the lower part of the device, passes through the filter, and exits to the outlet at the upper part.
  • the dust accumulated in the lower part of the device may be re-scattered when air is introduced, and the dust that has fallen off from the dust removal process may not sink to the lower part of the device and may be re-scattered, thereby reducing the efficiency of the filter.
  • the off-line exhaustion method is to stop the operation of the bag filter and dust collector during the operation of dust removal, and since there is no upward airflow, the exhaustion efficiency is very high.
  • an extra device is additionally installed for dust removal, and the device is stopped by the added extra amount to perform dust removal to maintain a constant overall operation amount.
  • the total installation cost of the bag filter filter and dust collector is increased by about 30% or more due to the additional installation of the device.
  • 'Patent Document 2' discloses a method of removing dust by moving the dust generated in the bag filter room to the cyclone room. .
  • Patent Document 2 the air from which the primary dust has been removed from the cyclone is smoothly moved to the upper bag filter, and the dust blown off from the filter bag of the bag filter is smoothly lowered into the cyclone, so that the upper bag filter room of the venturi is It discloses a structure that prevents dust and foreign substances from being deposited on it.
  • a separate venturi must be installed at the center of the dust collecting facility, which increases the cost of the facility and blocks the flow of the inflowing air, thereby reducing the efficiency of the device.
  • Patent Document 3 'A device for preventing dust scattering of a dust collector'
  • 'Patent Document 3' makes it possible to check the dust collection state of the dust collector in real time, and to prevent dust scattering due to dust collection errors.
  • structure is disclosed.
  • a lifting body that is raised and lowered according to the pressure of the suction air sucked into the dust collector is installed, and a display body that is raised and lowered by interlocking with the lifting operation of the elevator body is provided, and the operator confirms that the display body is lifted.
  • Patent Document 3 does not present a fundamental solution to prevent re-scattering of dust due to an updraft, but only suggests a method of post-processing when re-scattering occurs.
  • 'A bag filter for preventing re-scattering and re-adhesion' (hereinafter referred to as 'Patent Document 4'), when the dust collected in the bag filter is exhausted, the exhausted dust mass is dispersed again.
  • 'Patent Document 4' 'A bag filter for preventing re-scattering and re-adhesion'
  • Patent Document 4 a funnel-shaped dust collecting plate installed on the lower side of the bag filter to collect the exhausted dust in the existing bag filter and dust collecting device, and a dust collecting plate so that the dust collected by the collecting plate moves to the dust storage tank; Disclosed is a structure of a discharge pipe connecting the dust storage tank.
  • Patent Document 4 does not propose a fundamental solution for preventing re-scattering, only reducing the amount of re-scattering dust by discharging the exhausted dust to the outside.
  • 'Patent Document 1' provides a fundamental solution to prevent the re-scattering of dust by forming a sealed compartment that generates a downdraft in the lower part of the clean room.
  • Patent Document 1 it is possible to prevent the dust from being re-scattered by the downdraft, but there is a possibility that the downdraft may be dispersed due to the complicated airflow inside the dust collecting facility. The problem that the life of the bag can be shortened has been raised.
  • the present invention has been devised to solve the conventional problems as described above, and by forming an air curtain around the filter bag, the down air flow of the dust re-scattering prevention device is dispersed and a filter bag protection that can prevent direct collision with the filter bag
  • An object of the present invention is to provide an apparatus for preventing dust re-scattering of a filter dust filter including an air curtain generating module and a filter dust collector having the same.
  • the present invention forms a sealed housing overlapping the lower part of the clean room, and an inlet formed on one side of the housing so that air can be introduced into the housing from the outside, and a bag is formed by the inflowing air.
  • a protective wall formed to surround the inner portion of the housing of the bag filter to prevent the filter from being damaged; an airflow spraying surface constituting the bottom surface of the housing and forming a downdraft in the inner space of the filter dust collector;
  • Disclosed is an apparatus for preventing dust from re-scattering in a filter bag, including a filter bag protection air curtain generating module that forms an air curtain around the bag filter to prevent it from being dispersed and collided with the bag filter in the inner space of the bag filter.
  • the airflow spraying surface has through-holes having a larger diameter than that of the bag filter, and the bag filter is disposed at the center of the through-holes.
  • the filter bag protection air curtain generating module is formed on the lower surface of the airflow spraying surface so as to overlap the through hole.
  • the filter bag protection air curtain generating module has a first cylindrical member having a cylindrical shape extending up and down, and a circumference larger than that of the first cylindrical member to surround the first cylindrical member.
  • a second cylindrical member is disposed, and a plurality of vortex prevention members connecting the first cylindrical member and the second cylindrical member, are spaced apart from each other by a predetermined angle, and form a plate shape extending up and down.
  • the first cylindrical member has a shape in which the protective wall extends below the air flow spraying surface.
  • the second cylindrical member is formed to extend from the boundary of the through hole toward the lower portion of the air flow spraying surface.
  • the height of the first cylindrical member is formed to be greater than the height of the second cylindrical member.
  • the present invention forms a body, a plurality of filter bags installed to extend up and down inside the body, and a housing mounted on the upper end of the body.
  • a filter dust filter including a dust re-scattering prevention device that prevents the filter from being damaged and forms an air curtain around the plurality of filter bags to prevent the plurality of filter bags from being damaged by the downdraft.
  • the dust re-scattering prevention device has a first compartment having a constant height, and is connected to one end of the first compartment and is larger than the height of the first compartment to have a step with the first compartment. and a second compartment configured to have a height.
  • the dust re-scattering prevention device includes a first cylindrical member formed on a lower surface of the housing and enclosing the plurality of filter bags and having a cylindrical shape extending up and down, and the first cylindrical member A second cylindrical member having a larger circumference and disposed to surround the first cylindrical member, connecting the first cylindrical member and the second cylindrical member, spaced apart from each other at a predetermined angular interval, forming a plate shape extending up and down It includes a plurality of vortex prevention members.
  • the filter bag protection air curtain generating module applied to the present invention can generate an air curtain by spraying a downdraft with enhanced straightness around the filter bag.
  • the downward airflow dispersed in the filter bag direction approaches the filter bag and is swept away by the air curtain to change the direction of the airflow downward, so that the air curtain is not damaged.
  • FIG. 1 is a conceptual diagram of a filter dust filter to which a filter dust re-scattering prevention device including a filter bag protection air curtain generating module according to an embodiment of the present invention is applied.
  • FIG 2 is an enlarged conceptual view of the dust re-scattering prevention device including the filter bag protection air curtain generation module shown in Figure 1;
  • Figure 3 is a plan sectional view of the dust re-scattering prevention device viewed through the IV-IV line of Figure 2.
  • FIG. 4 is an enlarged conceptual view of area A of FIG. 3 viewed from the bottom;
  • FIG. 5 is a conceptual view obliquely looking up from the bottom of the filter bag protection air curtain generating module shown in FIG.
  • FIG. 6 is a conceptual diagram of a two-stage dust re-scattering prevention device including a filter bag protection air curtain generating module.
  • Figure 7 is a conceptual view of the filter dust filter to which the two-stage dust re-scattering prevention device shown in Figure 5 is applied.
  • the filter bag protection air curtain generating module applied to the filter bag dust scattering prevention device according to the present invention may have various modified embodiments.
  • module or “unit” for the components used in the following description is only a term used for convenience of writing the specification, and does not have a meaning or role distinct from each other.
  • FIG. 1 is a conceptual diagram of a filter dust filter to which a dust re-scattering prevention device including a filter bag protection air curtain generating module according to an embodiment of the present invention is applied.
  • a large number of filters are disposed inside a large-scale dust collecting facility to process a large amount of dust at once, and for efficient operation of such a dust collecting facility, filter bundles consisting of a bundle of a plurality of filters may be disposed adjacent to each other.
  • filter bundles consisting of a bundle of a plurality of filters may be disposed adjacent to each other.
  • a 'filter bundle' a group in which a plurality of filters are bundled in a predetermined unit.
  • the filter dust filter 100 includes a plurality of filter bundles disposed inside the body 101 .
  • the first filter bundle 130 and the second filter bundle 140 may be disposed to be adjacent to each other.
  • a first cover 111 covering the first filter bundle 130 and a second cover 112 covering the second filter bundle 140 may be disposed on the upper surface of the body 101 .
  • the user can open the cover of each filter bundle without stopping the operation of all filter bundles and perform work in units of filter bundles.
  • the filter dust filter dust scattering prevention device 200 may be installed at the upper end of the body 101 .
  • Dust re-scattering prevention device 200 is disposed to surround the filter at the upper end of the body (101).
  • the dust re-scattering prevention device 200 is provided with a hood through which air is introduced on one side.
  • a down air flow spraying surface, a down air flow concentrating projection, and a filter bag protection air curtain may be formed in the lower portion of the dust re-scattering prevention device 200 .
  • FIG. 2 is an enlarged conceptual view of the dust re-scattering prevention device including the filter bag protection air curtain generating module shown in FIG. am.
  • the air introduced through the hood 210 moves into the device along the bag filter protective wall 221 surrounding the filter. Since the air pressure is strong when air is introduced, it is possible to prevent the filter from being damaged through the bag filter protective wall 221 .
  • the hood 210 may be disposed so as not to face the bag filter. More specifically, the air introduced through the hood is divided into each filter bundle while proceeding along the boundary of the filter bundles. Since the incoming air does not directly touch the bag filter, the force applied to the bag filter is reduced, and the effect of dispersing the pressure can be expected by allowing it to enter several filter bundles.
  • the air introduced in this way is split in all directions and flows along the circumference of each filter.
  • An airflow spraying surface 231 is formed in the lower portion of the dust re-scattering prevention module 200 .
  • An airflow injection hole is formed in the center of the airflow injection surface 231 .
  • the airflow injection hole is formed to have the same distance from two adjacent filters.
  • the airflow spraying surface 231 is inclined downward toward the lower portion as it goes away from the filter, and a spray hole may be formed at the lowermost end of the inclined spraying surface 231 .
  • an end (injection hole boundary) of the injection surface 231 may be formed with a protrusion protruding upward. Since the air has to go over the bumps before being blown into the jetting hole, large dust can be pre-filtered before forming a downdraft.
  • a descending airflow concentration projection 241 may be formed at the boundary of the filter bundles.
  • a plurality of filter bundles may be operated independently. In this way, when a plurality of filter bundles are operated independently, dust from one filter bundle may be scattered and flowed into another filter bundle. It can prevent dust from flowing into other filter bundles.
  • the downdraft concentrating protrusion 241 may be formed in the form of a protrusion protruding downward from the end (injection hole boundary) of the spraying surface 231 .
  • the descending airflow concentrating projection 241 prevents the filter from being damaged by colliding with the filter while the airflow descends.
  • protrusions arranged to be spaced apart from each other at regular intervals may be formed on the inner surface of the descending airflow concentration protrusion 241 .
  • the protrusion may be arranged to form a V-shape or U-shape with an open lower end. This makes it possible to create a zone that produces a stronger downdraft at regular intervals at the filter bundle boundary.
  • a descending airflow is generated through the airflow spraying surface, and the descending airflow is dispersed depending on the condition of the inside of the bag filter and an impact is applied to the bag filter.
  • a bag filter protection air curtain generating module may be formed in the dust re-scattering prevention device of the present invention to prevent the dispersed downdraft from applying an impact to the bag filter.
  • the bag filter protection air curtain generation module forms an air curtain with strong straightness around the bag filter to prevent the distributed downdraft from hitting the bag filter.
  • FIG. 4 is an enlarged conceptual view of area A of FIG. 3 viewed from below
  • FIG. 5 is a conceptual view of the filter bag protection air curtain generating module shown in FIG. 4 as viewed obliquely from below.
  • the airflow jetting surface has a through hole having a diameter larger than that of the bag filters.
  • bag filters are disposed at the center of the through-holes to form holes along the circumference of the bag filters.
  • the filter bag protection air curtain generating module is disposed to overlap the through holes into which the bag filters are inserted.
  • the filter bag protection air curtain generating module may include a first cylindrical member 222 , a second cylindrical member 261 and a vortex prevention member 271 .
  • the first cylindrical member 222 has a cylindrical shape extending up and down.
  • the first cylindrical member 222 may be formed to have the same diameter as the protective wall 221 or may be formed to have a different diameter.
  • the first cylindrical member 222 may not be a separate member separated from the protective wall 221 . That is, the protective wall 221 may extend below the airflow spraying surface to serve as the first cylindrical member 222 .
  • the second cylindrical member 261 has a larger circumference than the first cylindrical member 222 and is disposed to surround the first cylindrical member 222 .
  • the second cylindrical member 261 preferably extends in the vertical direction, but may be formed to be inclined to one side rather than being parallel to the first cylindrical member 222 if necessary.
  • the second cylindrical member 261 may be inclined in an outward direction of the bag filter so that the air curtain spreads outward from the center.
  • the plurality of vortex prevention members 271 are disposed to connect the first cylindrical member 222 and the second cylindrical member 261 .
  • the vortex prevention member 271 is disposed to be spaced apart from each other at a predetermined angular interval and forms a plate shape extending up and down. As shown, there are four vortex prevention members 271 spaced apart from each other by 90 degrees in one module, but the spaced angle or the number of vortex prevention members 271 may be changed as needed.
  • the air entering the filter bundles may proceed in an oblique direction, and the air traveling in the oblique direction passes through the protective wall 221 .
  • a vortex can be created around the bag filter as it spins along.
  • the vortex prevention member 271 may prevent a vortex generated by rotating along the protective wall 221 when air descends through the through hole.
  • the height of the first cylindrical member 222 may be formed to be greater than the height of the second cylindrical member 261 . That is, the first cylindrical member 222 serving as the guide surface adjacent to the bag filter may be made longer in order to strengthen the jeopardy in the portion close to the bag filter.
  • FIG. 6 is a conceptual diagram of a two-stage dust scattering prevention device including a filter bag protection air curtain generating module
  • FIG. 7 is a conceptual diagram of a filter dust collector to which the two-stage dust scattering prevention device shown in FIG. 5 is applied.
  • the dust re-scattering prevention device may be formed of two compartments having a step difference from each other.
  • the dust re-scattering prevention device is connected to one end of the first compartment and a first compartment having a constant height and has a height greater than the height of the first compartment to have a step with the first compartment. It may include a second compartment formed to have.
  • the third filter bundle 130' is formed longer than the first filter bundle 130, and a step surface 151 is formed between the first filter bundle 130 and the third filter bundle 130'.
  • the fourth filter bundle 140' is formed longer than the second filter bundle 140, and a step surface 151 is formed between the second filter bundle 140 and the fourth filter bundle 140'.
  • an air curtain can be generated by spraying a downdraft with enhanced straightness around the filter bag, and the downdraft dispersed in the filter bag direction approaches the filter bag and is swept by the air curtain in the direction of the airflow It is turned downward to prevent damage to the air curtain, and vortex prevention blades arranged at regular intervals inside the cylindrical curtain body are provided to prevent vortex from occurring in the air curtain to enhance the straightness of the downdraft.
  • the filter bag protection air curtain generating module applied to the dust re-scattering prevention device of the filter dust filter described above is not limited to the configuration and method of the above-described embodiments, but the embodiments are described in each embodiment so that various modifications can be made. All or a part may be selectively combined and configured.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Un appareil pour empêcher la redispersion de la poussière dans un collecteur de poussière à filtre est divulgué dans la présente invention, formant un boîtier fermé chevauchant la partie inférieure d'une salle blanche, l'appareil comprenant : une entrée formée sur un côté du boîtier de sorte que de l'air puisse s'écouler dans le boîtier depuis l'extérieur ; des parois de protection formées de façon à entourer la partie interne du boîtier de filtres dépoussiéreurs pour empêcher ceux-ci d'être endommagés par l'air entrant ; une surface d'injection de flux d'air constituant la surface inférieure du boîtier et formant un flux d'air descendant dans l'espace intérieur du collecteur de poussière à filtre ; et un module de génération de rideau d'air de protection de filtre dépoussiéreur qui forme un rideau d'air autour du filtre dépoussiéreur de façon à empêcher le filtre dépoussiéreur dans l'espace interne du collecteur de poussière à filtre d'être heurté par le flux d'air descendant qui est dispersé.
PCT/KR2020/007336 2020-05-21 2020-06-05 Appareil pour empêcher la redispersion de la poussière dans un collecteur de poussière à filtre comprenant un module de génération de rideau d'air de protection de sac filtrant, et collecteur de poussière de filtre le comprenant WO2021235587A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022563431A JP7453414B2 (ja) 2020-05-21 2020-06-05 フィルターバッグ保護エアカーテン生成モジュールを含むろ過集塵機の粉塵再飛散防止装置及びこれを備えるろ過集塵機

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KR1020200060803A KR102311583B1 (ko) 2020-05-21 2020-05-21 필터백 보호 에어커튼 생성 모듈을 포함하는 여과집진기 분진 재비산 방지 장치 및 이를 구비하는 여과집진기
KR10-2020-0060803 2020-05-21

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CN114082251A (zh) * 2021-12-24 2022-02-25 马鞍山科宇环保设备股份有限公司 一种复合袋式除尘装置
KR102413127B1 (ko) * 2022-01-27 2022-06-24 주식회사 신성플랜트 멀티 사이클론과 필터백을 이용한 집진장치

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KR100764753B1 (ko) 2007-07-18 2007-10-08 주식회사 명진 원심 여과형 백필터 집진기
KR101168680B1 (ko) 2007-11-27 2012-07-25 주식회사 포스코 집진기의 분진 비산 방지장치
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KR940012001U (ko) * 1992-11-30 1994-06-15 이창학 백필터식 집진기
JPH08196839A (ja) * 1995-01-30 1996-08-06 Ayakawa Bankin Kosakusho:Kk 濾過式集塵方法及び濾過式集塵機
KR20140097888A (ko) * 2013-01-30 2014-08-07 한국서부발전 주식회사 집진장치
KR101630810B1 (ko) * 2014-10-28 2016-06-15 주식회사 동화에프엔이 에어커튼을 이용한 비산 먼지 집진 장치
CN208526081U (zh) * 2018-06-07 2019-02-22 广东优冠生物科技有限公司 一种除尘装置
KR101998316B1 (ko) * 2019-02-12 2019-07-09 고대동 여과집진기 분진 재비산 방지 모듈 및 이를 구비하는 집진 장치

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JP2023522922A (ja) 2023-06-01
JP7453414B2 (ja) 2024-03-19

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