JP5614604B2

JP5614604B2 - Dust removal apparatus and method for large capacity filtration dust collector

Info

Publication number: JP5614604B2
Application number: JP2013501167A
Authority: JP
Inventors: パク，ヒョン−ソル; リム，キョン−スウ
Original assignee: コリアインスティテゥートオブエナジーリサーチ
Priority date: 2010-03-24
Filing date: 2010-03-24
Publication date: 2014-10-29
Anticipated expiration: 2030-03-24
Also published as: CN102811791A; WO2011118861A1; JP2013522033A; CN102811791B

Description

本発明は大気中に排出される粉塵の量を減らし、同時に脱塵効率を高めるための濾過集塵機脱塵装置及び脱塵方法に関する。 The present invention relates to a filtration dust collector dedusting device and a dedusting method for reducing the amount of dust discharged into the atmosphere and at the same time enhancing the dedusting efficiency.

集塵装置は空気中に存在する固体や液体微粒子を除去するための装置を指す一般的な名称である。集塵装置はボイラー、焙焼炉、加熱炉、廃棄物焼却炉などの排出ガス中の煤煙や埃の除去に使用されており、化学粉末製造、製鉄、木材、セメント製造及びその他微細粉塵が多量発生する作業場で使用されており、それ以外にも製造工業ではＩＣ工程、製薬工程などで空気の清浄化による製品の品質向上などのために設置されて使用されている。
かかる集塵装置は作動方式によって機械式、電気式、乾式または湿式に分けられ、除去しようとする微粒子の大きさが１０μｍ程度までは構造が簡単な機械式（例えば、重力沈降室、衝突式集塵装置、遠心力サイクロンなど）方法を使用することができる。これら乾式集塵装置は技術開発と構造改善によって最近では１μｍ粒子までも圧力損失が比較的低い状態で集塵できるように開発されたが、１μｍ以下の超微粒子までを集塵する場合は装置の特別な構造と圧力損失、高いコストがかかるという短所がある。
濾過集塵機（ｆｉｌｔｅｒｂａｇｈｏｕｓｅ）は大気汚染の原因となる大気中の各種粒子状物質や工場などの排出ガスに含まれた有害粒子を除去したり排出を防止する大気汚染防止装置の１つである。これら濾過集塵機の濾過方式としては薄紙や纎維などの濾過材の表面に埃を付着させる表面濾過方式とガラス・ファイバーや綿繊維のような厚い層を有する濾過材を袋状や平板にして作った濾過布、すなわちバッグフィルターの纎維層の中に埃を集める内部濾過方式がある。運転初期には濾過材によってのみ埃が分離するが、時間が経つと濾過材の表面に堆積する粉塵層が濾過材としての役目を果たすようになる。このように粉塵層が主濾過層としての役目を果たしながら、捕集効率は上昇するが、同時にガスの流れを妨げる抵抗体として作用することがある。
かかる濾過集塵機は普通粉塵の大きさが１．０μｍ以上の場合には９９％以上の効率を示す。この装置で粉塵を捕集する原理は衝突、直接遮断、静電気力による表面沈着、拡散などの複合的な作用である。かかる集塵方式は優れた集塵技術の１つであり、濾過材を適切に選択することによって高い効率を得ることができるが、圧力損失の過負荷によって濾過材の細孔がつまると濾過材の寿命が短縮し、運転コスト上昇の要因となることもある。
つまり、濾過操作が進行されることによって濾過材に捕集される埃層が厚くなり濾過材の圧力損失が高くなって正常な運転が不可能になり、上記のような問題点によって周期的な脱塵操作（ｃｌｅａｎｉｎｇ）によって濾過材の表面に捕集される埃を払い落とさなければならないが、かかる脱塵操作時に流入される含塵ガスの埃濃度が高かったり、濾過速度が速い場合には埃自体の性質によって埃層が充分に払い落とされなかったり、払い落とされた埃が隣接する濾過材に再流入されて集塵性能を低下させる問題点が発生する。
さらに、上記のような脱塵操作で再付着現象を防止しながら集塵装置の運転を長持ちさせるために脱塵操作の頻度を増加させたり、脱塵強度を増加させるなど過度な脱塵操作を行うと、濾過材の細孔が大きくなって集塵効率が低下したり、濾過材自体が摩耗及び破損して寿命が短縮する問題点が発生する。 A dust collector is a general name referring to a device for removing solid and liquid particulates present in the air. Dust collectors are used to remove soot and dust in exhaust gases from boilers, roasting furnaces, heating furnaces, waste incinerators, etc., and there are large amounts of chemical powder production, iron making, wood, cement production and other fine dust. It is used in the workplace where it is generated, and in addition, in the manufacturing industry, it is installed and used for the purpose of improving the quality of products by cleaning the air in the IC process, pharmaceutical process and the like.
Such dust collectors are classified into mechanical, electric, dry, or wet types depending on the operation system, and mechanical structures that have a simple structure (for example, gravity settling chambers, collision-type collectors, etc.) up to a size of about 10 μm of particles to be removed. Dust devices, centrifugal cyclones, etc.) methods can be used. These dry dust collectors have recently been developed by technology development and structural improvements so that dust can be collected with a relatively low pressure loss up to 1 μm particles. It has a special structure, pressure loss, and high costs.
A filter bag house is one of air pollution control devices that removes or prevents harmful particles contained in various particulate matter in the atmosphere and exhaust gas from factories that cause air pollution. . The filtration system of these filter dust collectors is made of a surface filtration system that attaches dust to the surface of a filter medium such as thin paper or fiber and a filter medium having a thick layer such as glass fiber or cotton fiber in the form of a bag or flat plate. There is an internal filtration system that collects dust in a filter cloth, that is, a fiber layer of a bag filter. In the initial stage of operation, dust is separated only by the filter medium. Over time, a dust layer deposited on the surface of the filter medium plays a role as a filter medium. In this way, while the dust layer serves as the main filtration layer, the collection efficiency increases, but at the same time, it may act as a resistor that obstructs the gas flow.
Such a filter dust collector exhibits an efficiency of 99% or more when the size of ordinary dust is 1.0 μm or more. The principle of collecting dust with this device is a complex action such as collision, direct interruption, surface deposition due to electrostatic force, and diffusion. Such a dust collection method is one of the excellent dust collection technologies, and high efficiency can be obtained by appropriately selecting the filter medium. However, if the pores of the filter medium become clogged due to overload of pressure loss, the filter medium The lifespan of the product may be shortened, which may increase operating costs.
That is, as the filtration operation proceeds, the dust layer collected on the filter medium becomes thicker, and the pressure loss of the filter medium increases and normal operation becomes impossible. The dust collected on the surface of the filter medium must be removed by the dusting operation (cleaning). However, if the dust concentration of the dust-containing gas flowing in the dust removal operation is high or the filtration speed is high Due to the nature of the dust itself, there is a problem that the dust layer is not sufficiently removed, or the dust that has been removed is re-flowed into the adjacent filter medium and the dust collection performance is lowered.
In addition, excessive dust removal operations such as increasing the frequency of dust removal operations and increasing dust removal strength in order to extend the operation of the dust collector while preventing the re-adhesion phenomenon with the dust removal operations as described above. When it does, the pores of the filter medium will become large and the dust collection efficiency will decrease, or the filter medium itself will be worn and damaged, resulting in a problem of shortening the life.

本発明は上記のような問題点を解決するために案出されたものであって、本発明の目的は流量を遮断せずに脱塵する既存の脱塵システムで、脱塵時に瞬間的に脱塵された粉塵がまた再流入してフィルターを通過したり、またはフィルターに再付着して脱塵効率が低下することを防止し、脱塵直後に一時的にきれいになった集塵フィルターに初期集塵層を形成して集塵効率を上昇させると同時に、多数の集塵室からなる濾過集塵機で使用者の多様な実施例によって所定の時間と開閉率によって多数の集塵室が選択的または順次駆動して脱塵作動を可能にすることで、従来に比べて維持コストを節減させることができる大容量濾過集塵機脱塵装置及び方法に関する。
本発明の他の目的及び長所は下記の説明するとおりであり、本発明の実施例によって明らかにされる。また、本発明の目的及び長所は特許請求の範囲に示した手段及び組み合わせによって実現することができる。 The present invention has been devised to solve the above problems, and the object of the present invention is an existing dust removal system that removes dust without shutting off the flow rate. Dust that has been removed from the dust is allowed to flow again and pass through the filter, or reattached to the filter to reduce the efficiency of dust removal. A dust collection layer is formed to increase dust collection efficiency, and at the same time, a filter dust collector composed of a plurality of dust collection chambers, and a plurality of dust collection chambers can be selectively selected according to a predetermined time and an open / close rate according to various embodiments of a user. The present invention relates to a dust removal apparatus and method for a large-capacity filtration dust collector that can reduce maintenance costs compared to the conventional art by enabling the dust removal operation by sequentially driving.
Other objects and advantages of the present invention will be described below, and will be clarified by embodiments of the present invention. The objects and advantages of the present invention can be realized by the means and combinations shown in the claims.

本発明は上記のような問題点を解決するための手段であって、第１の実施例として、多数の集塵室（１２）からなる大容量濾過集塵機（１０）で、使用者が指定した所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１０）の圧力損失値が所定値に達して上記多数の集塵室（１２）が順次すべて脱塵される大容量濾過集塵機脱塵方法において、第１の脱塵対象集塵室（１２）の流量を完全に遮断し、脱塵開始直前まで所定の時間（Ｔ１）待機する段階（Ｓ１００）と、上記脱塵対象集塵室（１２）の集塵フィルター（１１）に捕集された粉塵を脱塵させる段階（Ｓ２００）と、脱塵された粉塵が上記集塵フィルター（１１）に再流入することを防止し、沈降によって上記集塵室（１２）下端部のホッパー（１３）と粉塵排出装置（１４）を経て外部に排出されるように、上記集塵室（１２）の流量を完全に遮断した状態で所定の時間（Ｔ２）経過させる段階（Ｓ３００）と、上記流量が完全に遮断した脱塵対象集塵室（１２）を１００％開放した正常流量の５０％で流量が通過するように開放して所定の時間（Ｔ３）運転させる段階（Ｓ４００）と、上記脱塵対象集塵室（１２）を１００％開放した正常流量状態で所定の時間（Ｔ４）運転させる段階（Ｓ５００）と、上記濾過集塵機（１０）の第２の脱塵対象集塵室（１２）を上記各段階と同一の順序と方法で脱塵する段階（Ｓ６００）と、上記濾過集塵機（１０）の残りの集塵室（１２）も順次上記段階と同一に反復させて脱塵する段階（Ｓ７００）と、上記濾過集塵機（１０）の最後の脱塵順序に該当する集塵室（１２）の脱塵が完了して上記濾過集塵機（１０）の脱塵サイクルが終了した後、所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１０）の圧力損失が所定値に達して上記濾過集塵機（１０）の脱塵サイクルが再び反復される段階（Ｓ８００）を含んでなる脱塵方法を特徴とする。
また、第２の実施例として、多数の集塵室（１２）からなる大容量濾過集塵機（１０）で、所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１０）の圧力損失値が所定値に達して上記多数の集塵室（１２）が順次すべて脱塵される大容量濾過集塵機の脱塵方法において、第１の脱塵対象集塵室（１２）を１００％開放した正常流量の５０％以下で流量が通過するように開放して脱塵開始直前まで所定の時間（Ｔ１）待機する段階（Ｓ１００）と、上記脱塵対象集塵室（１２）の集塵フィルター（１１）に捕集された粉塵を脱塵させる段階（Ｓ２００）と、脱塵された粉塵が上記集塵フィルター（１１）に再流入することを防止し、沈降によって上記集塵室（１２）下端部のホッパー（１３）と粉塵排出装置（１４）を経て外部に排出されるように、上記集塵室（１２）を上記Ｓ１００段階の開放した状態に維持して所定の時間（Ｔ２）経過させる段階（Ｓ３００）と、上記脱塵対象集塵室（１２）を１００％開放した正常流量状態で所定の時間（Ｔ４）運転させる段階（Ｓ５００）と、上記濾過集塵機（１０）の第２の脱塵対象集塵室（１２）を上記各段階と同一の順序と方法で脱塵する段階（Ｓ６００）と、上記濾過集塵機（１０）の残りの集塵室（１２）も順次上記段階と同一に反復させて脱塵する段階（Ｓ７００）と、上記濾過集塵機（１０）の最後の脱塵順序に該当する集塵室（１２）の脱塵が完了して上記濾過集塵機（１０）の脱塵サイクルが終了した後、所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１０）の圧力損失が所定値に達して上記濾過集塵機（１０）の脱塵サイクルが再び反復される段階（Ｓ８００）を含んでなる脱塵方法を特徴とする。
また、上記Ｓ４００段階では上記脱塵対象集塵室（１２）が１００％開放した場合の正常流量に比べて、上記集塵室（１２）を通過する流量が５ないし２０％になるように上記脱塵対象集塵室（１２）を開放して運転させることで、正常流量の場合に比べて濾過速度を低めて集塵効率を向上させ、集塵フィルター（１１）表面に初期粉塵層が形成されるようにし、上記初期粉塵層によって集塵フィルター（１１）の集塵効率が増大するようにすることを特徴とする。
また、上記Ｓ１００段階では上記脱塵対象集塵室（１２）が１００％開放した場合の正常流量に比べて、上記集塵室（１２）を通過する流量が正常流量の５ないし２０％になるように上記脱塵対象集塵室（１２）を開放して運転することを特徴とする。
また、上記Ｓ２００段階で上記脱塵対象集塵室（１２）には多数の集塵フィルター（１１）が形成されており、上記集塵フィルター（１１）は上記脱塵対象集塵室（１２）の清浄部（１６）に設置された脱塵機構（８０）と、上記脱塵機構（８０）の種類による脱塵操作を制御することができる脱塵機構制御機（９０）を介して脱塵されることを特徴とする。
また、集塵フィルター（１１）が内設された多数の集塵室（１２）からなる濾過集塵機（１０）と、上記多数の集塵室（１２）内部に粉塵含有ガス（Ａ）を供給するためのガス流入ライン（２０）と、上記各集塵室（１２）の処理ガス排出分岐管（４１）に連通連結され、上記集塵フィルター（１１）によって濾過された清浄処理ガス（Ｂ）を排出するためのガス排出ライン（４０）と、上記それぞれの処理ガス排出分岐管（４１）に設置され、各集塵室（１２）から排出されるガス流量を制御する排出ガス流量制御装置（５０）と、上記ガス流入ライン（２０）及びガス排出ライン（４０）にそれぞれ設置され、上記濾過集塵機（１０）を通過する前後の圧力差を測定するようにする第１、２メイン差圧センサー（６０、６１）と、上記集塵フィルター（１１）に捕集された粉塵を脱塵させるために各集塵室（１２）に設置された脱塵機構（８０）と、上記各集塵室（１２）の脱塵機構（８０）の作動を制御するように設計された脱塵機構制御機（９０）と、上記濾過集塵機（１０）の脱塵サイクル周期（Ｔ０）及び上記各脱塵段階（Ｓ１００、Ｓ２００、Ｓ３００、Ｓ４００、Ｓ５００）に該当する所定の時間（Ｔ１、Ｔ２、Ｔ３、Ｔ４）及び順序、上記流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）の開閉率と開閉時間間隔、多数の集塵室（１２）間の脱塵順序と脱塵時間間隔を制御し、上記第１、２メイン差圧センサー（６０、６１）と通信し、上記脱塵機構制御機（９０）とも通信して上記濾過集塵機（１０）の全体の脱塵過程を制御するように設計された連動制御機（１００）、から構成される脱塵装置を特徴とする。
また、上記ガス流入ライン（２０）は一端の外周縁に処理ガス流入分岐管（２１）が多数分岐形成されて各集塵室（１２）に連通連結され、上記それぞれの処理ガス流入分岐管（２１）には各集塵室（１２）に流入される粉塵含有ガス（Ａ）の流量を制御する流入ガス流量制御装置（３０）が設置されることを特徴とする。
また、上記それぞれの集塵室（１２）は上記処理ガス流入分岐管（２１）に第１負荷差圧センサー（７０）を設置し、上記処理ガス排出分岐管（４１）には第２負荷差圧センサー（７１）を設置し、各集塵室（１２）の集塵フィルター（１１）を通過する前後の圧力差を測定するようにすることを特徴とする。
また、上記脱塵機構（８０）は高圧の圧縮空気を集塵フィルター（１１）内部に高速で噴射する衝撃気流脱塵装置、上記排出ガス流量制御装置（５０）を完全に閉めた状態で脱塵用空気流量制御装置（４４）を開放して押圧送風機を利用したり、上記濾過集塵機（１０）の送風機（２）を利用して一定の間集塵フィルター（１１）の濾過方向と反対方向に流量を通過させて粉塵を脱塵させる逆気流洗浄脱塵装置、上記集塵フィルター（１１）を外力によって振動させて脱塵させる振動脱塵装置、音波発生器を利用して音波による振動で集塵フィルター（１１）を脱塵させる音波脱塵装置のうち１つが使用されることを特徴とする。
また、上記多数の集塵室（１２）は粉塵含有ガス（Ａ）が流入されるホッパー（１３）及び上記集塵フィルター（１１）が内設されてホッパー（１３）の上端部に垂直上向きに延長形成されるフィルター部（１５）と、上記フィルター部（１５）と連通されてフィルター部（１５）を経て粉塵が濾過された清浄処理ガス（Ｂ）が移動する清浄部（１６）に区画され、上記フィルター部（１５）は多数の集塵フィルター（１１）からなることを特徴とする。
また、上記多数の集塵室（１２）は上記フィルター部（１５）が相互間開放されていたり、または分離板（１８）によって区画されていることを特徴とする。 The present invention is a means for solving the above-mentioned problems, and as a first embodiment, a large-capacity filtration dust collector (10) comprising a large number of dust collection chambers (12) is designated by the user. In a large-capacity filter dust collector dedusting method in which the pressure loss value of the filter dust collector (10) reaches a predetermined value at a predetermined time period (T0) or all the dust collecting chambers (12) are sequentially dusted. The step of completely shutting off the flow rate of the first dust collection target dust collection chamber (12) and waiting for a predetermined time (T1) immediately before the start of dust removal (S100), and the dust collection target dust collection chamber (12) Removing the dust collected by the dust collecting filter (11) (S200), preventing the dust removed from flowing again into the dust collecting filter (11), and settling the dust by sedimentation. Chamber (12) Lower hopper (13) and dust discharge device (1 ) For a predetermined time (T2) in a state in which the flow rate of the dust collecting chamber (12) is completely shut off so that the dust is discharged to the outside through (S300), and dedusting in which the flow rate is completely shut off. Opening the target dust collection chamber (12) so that the flow rate passes at 50% of the normal flow rate with 100% open and operating for a predetermined time (T3) (S400), and the dust collection target dust collection chamber (12 ) Is operated at a normal flow rate with 100% open for a predetermined time (T4) (S500), and the second dust collection target dust collection chamber (12) of the filtration dust collector (10) is the same as the above steps. Dedusting by order and method (S600), the remaining dust collecting chamber (12) of the filtration dust collector (10) is repeatedly repeated in the same manner as in the above step (S700), and the filtration dust collector Dust collection chamber (1) corresponding to the last dust removal order of (10) ) After the dust removal cycle of the filtration dust collector (10) is completed and the pressure loss of the filtration dust collector (10) reaches a predetermined value by a predetermined time period (T0) or after the filtration. It features a dust removal method comprising a step (S800) in which the dust removal cycle of the dust collector (10) is repeated again.
Further, as a second embodiment, a large-capacity filtration dust collector (10) composed of a large number of dust collection chambers (12) has a predetermined time period (T0) or the pressure loss value of the filtration dust collector (10) is predetermined. In the dust removal method of the large-capacity filtration dust collector in which all the dust collection chambers (12) are sequentially dedusted after reaching the value, the normal flow rate with the first dust collection target dust collection chamber (12) opened 100%. The stage is opened so that the flow rate passes at 50% or less and waits for a predetermined time (T1) until just before the start of dust removal (S100), and the dust collection filter (11) of the dust collection target dust collection chamber (12) A step of dedusting the collected dust (S200), and preventing the dedusted dust from flowing back into the dust collection filter (11), and a hopper at the lower end of the dust collection chamber (12) by settling (13) and dust discharge device (14) As described above, maintaining the dust collection chamber (12) in the open state of the step S100 and allowing the predetermined time (T2) to elapse (S300), and setting the dust collection target dust collection chamber (12) to 100 % In the normal flow rate state opened for a predetermined time (T4) (S500) and the second dust collection target dust collecting chamber (12) of the filter dust collector (10) in the same order and method as the above steps The dust collection step (S600), the remaining dust collection chamber (12) of the filtration dust collector (10) is repeatedly repeated in the same manner as the above step (S700), and the filtration dust collector (10). After the dust collection chamber (12) corresponding to the last dust removal order in the above is completed and the dust collection cycle of the filtration dust collector (10) is completed, or according to a predetermined time period (T0) or the filtration dust collector When the pressure loss in (10) reaches a predetermined value, Dedusting cycle dust collector (10) and said dust removing method comprising the step (S800) is repeated again.
In step S400, the flow rate passing through the dust collection chamber (12) is 5 to 20% compared to the normal flow rate when the dust collection chamber (12) is 100% open. By opening the dust collection target dust collection chamber (12) and operating it, the filtration speed is reduced compared to the normal flow rate to improve dust collection efficiency, and an initial dust layer is formed on the surface of the dust collection filter (11). The dust collection efficiency of the dust collection filter (11) is increased by the initial dust layer.
Further, in step S100, the flow rate passing through the dust collection chamber (12) is 5 to 20% of the normal flow rate compared to the normal flow rate when the dust collection target dust collection chamber (12) is 100% open. As described above, the dust collection target dust collection chamber (12) is opened and operated.
Further, a large number of dust collection filters (11) are formed in the dust collection target dust collection chamber (12) in the step S200, and the dust collection filter (11) is the dust collection target dust collection chamber (12). The dust removal mechanism (80) installed in the cleaning section (16) of the dust and the dust removal mechanism controller (90) capable of controlling the dust removal operation by the type of the dust removal mechanism (80). It is characterized by being.
Further, a dust collector (10) including a large number of dust collecting chambers (12) in which dust collecting filters (11) are installed, and a dust-containing gas (A) are supplied to the inside of the large number of dust collecting chambers (12). And a clean gas (B) that is connected to a gas inlet line (20) and a processing gas discharge branch pipe (41) of each dust collecting chamber (12) and filtered by the dust collecting filter (11). A gas discharge line (40) for discharging and an exhaust gas flow rate control device (50) for controlling the flow rate of gas discharged from each dust collecting chamber (12), which is installed in each of the processing gas discharge branch pipes (41). ) And first and second main differential pressure sensors (1) and (2) which are installed in the gas inflow line (20) and the gas exhaust line (40), respectively, and measure the pressure difference before and after passing through the filter dust collector (10). 60, 61) and the above collection A dust removing mechanism (80) installed in each dust collecting chamber (12) to dedust the dust collected by the filter (11), and a dust removing mechanism (80) of each dust collecting chamber (12). The dust removal mechanism controller (90) designed to control the operation of the filter, the dust removal cycle period (T0) of the filtration dust collector (10), and each dust removal stage (S100, S200, S300, S400, S500). ) Predetermined time (T1, T2, T3, T4) and sequence corresponding to the above), the open / close rate and open / close time intervals of the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50), and a large number of dust collecting chambers. (12) controls the dust removal sequence and dust removal time interval, communicates with the first and second main differential pressure sensors (60, 61), communicates with the dust removal mechanism controller (90), and performs the filtration. Designed to control the entire dust removal process of the dust collector (10) The interlocking controller (100), and wherein the dust removing device composed.
Further, the gas inflow line (20) has a plurality of process gas inflow branch pipes (21) formed at the outer peripheral edge of one end and is connected to the dust collection chambers (12). 21) is characterized in that an inflow gas flow rate control device (30) for controlling the flow rate of the dust-containing gas (A) flowing into each dust collection chamber (12) is installed.
Each dust collection chamber (12) has a first load differential pressure sensor (70) installed in the process gas inflow branch pipe (21), and a second load difference in the process gas discharge branch pipe (41). A pressure sensor (71) is installed, and the pressure difference before and after passing through the dust collection filter (11) of each dust collection chamber (12) is measured.
In addition, the dust removal mechanism (80) removes the impact air flow dust removal device that injects high-pressure compressed air into the dust collection filter (11) at a high speed and the exhaust gas flow control device (50) in a completely closed state. Open the dust air flow control device (44) and use a pressure blower, or use the blower (2) of the filtration dust collector (10) for a certain period of time opposite to the filtration direction of the dust collection filter (11) The reverse airflow cleaning dedusting device that allows dust to pass through the flow rate, the dust collection filter (11) to vibrate by external force, and the dust removal device to vibrate the dust. One of the sonic dedusting devices for dedusting the dust collecting filter (11) is used.
The large number of dust collection chambers (12) are provided with a hopper (13) into which dust-containing gas (A) is introduced and the dust collection filter (11) so that the upper end of the hopper (13) is vertically upward. An extended filter part (15) and a cleaning part (16) that communicates with the filter part (15) and passes through the filter part (15) and passes through the cleaning process gas (B) is partitioned. The filter part (15) is composed of a large number of dust collecting filters (11).
Further, the large number of dust collecting chambers (12) are characterized in that the filter parts (15) are opened between each other or are partitioned by a separating plate (18).

以上のように、本発明は内部の集塵フィルターに粉塵が捕集されて脱塵対象となる集塵室を脱塵する場合、流量を遮断せずに脱塵をする既存のものと異なり、集塵室内部を密閉後に脱塵することで、脱塵がフィルターに再付着したり、再流入することを防止して脱塵現象が低下する現象を防止できる効果がある。
また、本発明は脱塵後、きれいになった脱塵対象集塵室を完全開放（１００％開放）して使用せず、完全開放（１００％開放）に対して所定の割合だけ開放して試運転をさせることで、集塵フィルターに形成される初期粉塵層によって集塵フィルターの粉塵捕集効率が増大する効果がある。
また、本発明は多数の集塵部からなる大容量濾過集塵機において、従来のように多数の集塵室を同時に脱塵させることで維持コスト及び脱塵効率が低下しないように、多数の集塵室の間の脱塵順序と脱塵時間間隔、各集塵室に内設されている多数の脱塵機構の操作順序及び脱塵時間間隔、上記集塵室にガスを流入または排出させる流量制御装置の開閉率と開閉時間間隔などを流量制御装置、多数の差圧センサー、脱塵機構を連動させて、使用者が多様な実施例で駆動させることができる効果がある。 As described above, in the present invention, when dust is collected by the internal dust collection filter and the dust collecting chamber to be dedusted is dedusted, unlike the existing one that dedusts without shutting off the flow rate, By removing the dust after sealing the inside of the dust collection chamber, there is an effect that the dust can be prevented from adhering again to the filter or flowing again, thereby preventing the phenomenon of the dust removal from being lowered.
In addition, the present invention does not use a dust collection chamber that has been cleaned after dust removal and is completely open (100% open), and is opened for a predetermined ratio with respect to full open (100% open). As a result, the dust collection efficiency of the dust collection filter is increased by the initial dust layer formed on the dust collection filter.
In addition, the present invention is a large-capacity filtration dust collector comprising a large number of dust collecting portions, so that a large number of dust collecting chambers are prevented from deteriorating maintenance cost and dust removal efficiency by simultaneously dedusting a large number of dust collecting chambers. Dedusting sequence and dedusting time interval between chambers, operation sequence and dedusting time interval of many dedusting mechanisms installed in each dust collecting chamber, flow control for gas flow into or out of the dust collecting chamber There is an effect that the user can drive the apparatus in various embodiments by interlocking the flow rate control device, a large number of differential pressure sensors, and a dust removing mechanism with respect to the open / close rate and open / close time interval of the device.

本発明による多数の集塵室で構成された大容量濾過集塵機に対して処理ガスの流れを示した概念図である。It is the conceptual diagram which showed the flow of process gas with respect to the large capacity filtration dust collector comprised by many dust collection chambers by this invention. 本発明による多数の集塵室で構成された衝撃気流脱塵方式濾過集塵機とこの脱塵装置を示した第１の一実施例の図面である。It is drawing of the 1st Example which showed the impact airflow dust removal system filtration dust collector comprised by many dust collection chambers by this invention, and this dust removal apparatus. 図２の平面図である。FIG. 3 is a plan view of FIG. 2. 本発明による多数の集塵室で構成された脱塵用空気流入管が備えられた逆気流洗浄方式濾過集塵機とこの脱塵装置を示した第２の実施例の図面である。2 is a drawing of a second embodiment showing a reverse airflow cleaning type filter dust collector having a dust removal air inflow pipe constituted by a number of dust collection chambers according to the present invention and the dust removal apparatus; 本発明による処理ガス流入分岐管流量制御装置が備えられた衝撃気流脱塵方式濾過集塵機とこの脱塵装置を示した一実施例の図面である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a drawing of an embodiment showing an impact airflow dust removing type filtration dust collector equipped with a processing gas inflow branch pipe flow rate control device according to the present invention and the dust removing device. 本発明による多数の集塵室が相互間区画されない形態の衝撃気流脱塵方式濾過集塵機とこの脱塵装置を示した一実施例の図面である。1 is a drawing of an embodiment showing an impact airflow dust removing filtration dust collector and a dust removing device according to the present invention in which a large number of dust collecting chambers are not partitioned from each other; 本発明による脱塵方法を示した第１の実施例のフローチャートである。It is the flowchart of the 1st Example which showed the dust removal method by this invention. 本発明による脱塵方法を示した第１の実施例のフローチャートである。It is the flowchart of the 1st Example which showed the dust removal method by this invention. 本発明による脱塵方法を示した第２の実施例のフローチャートである。It is a flowchart of the 2nd Example which showed the dust removal method by this invention.

本発明の様々な実施例を詳細に説明する前に、次の詳細な説明に記載したり図面に示された構成要素の構成及び配列の詳細によりその応用が制限されるものではない。本発明は他の実施例により具現されて実施され、多様な方法により遂行することができる。また、装置または要素の方向（例えば“前（ｆｒｏｎｔ）”、“後（ｂａｃｋ）”、“上（ｕｐ）”、“下（ｄｏｗｎ）”、“上（ｔｏｐ）”、“下（ｂｏｔｔｏｍ）”、“左（ｌｅｆｔ）”、“右（ｒｉｇｈｔ）”、“横（ｌａｔｅｒａｌ）”）などのような用語に関して本願に使用された表現及び述語は単に本発明の説明を単純化するためのものであり、係る装置または要素が単純に特定方向を有することを示したり、意味するものではない。また、“第１（ｆｉｒｓｔ）”、“第２（ｓｅｃｏｎｄ）”のような用語は説明のために本願及び添付の請求項に使用され、相対的な重要性または趣旨を示したり、意味するものではない。
本発明は上記の目的を達成するために下記の特徴を有する。
以下添付の図面を参照にして本発明の好ましい実施例を詳細に説明する。これに先立ち、本明細書及び請求の範囲に使用された用語や単語は通常的あるいは字義的な意味に限定して解釈されてはならず、発明者はその自己の発明を最も最善の方法で説明するために用語の概念を適切に定義することができるという原則に即して本発明の技術的思想に符合する意味と概念で解釈されなければならない。
したがって、本明細書に記載した実施例と図面に示された構成は本発明の最も好ましい一実施例に過ぎず、本発明の技術的思想をすべて代弁するものではないので、本出願時点においてこれらを代替することができる多様な均等物と変形例があり得ることを理解されたい。
以下、図１ないし図９を参照して本発明の好ましい実施例による大容量濾過集塵機脱塵装置及び方法を詳細に説明する。
本発明による大容量濾過集塵機の脱塵方法を説明するのに先立ち、上記大容量濾過集塵機の脱塵方法が使用される脱塵装置について説明する。
本発明は多数の集塵室（１２）からなる濾過集塵機（１０）の、集塵フィルター（１１）に捕集された粉塵を周期的に脱塵させるための脱塵方法において、濾過集塵機（１０）から集塵フィルター（１１）を通過して大気中に排出される粉塵は主に脱塵時にのみ排出される特性と、集塵フィルター（１１）の効率は濾過速度が低い時に増加する特性と（｛濾過速度＝集塵フィルター（１１）通過流量÷集塵フィルター（１１）表面積（または濾過面積）｝）、集塵フィルター（１１）表面に粉塵が付着して形成される初期粉塵層によって集塵効率が大きく増加する特性を利用し、大気中に排出される粉塵の量を減らし、同時に脱塵効率を高めるための濾過集塵機の脱塵装置及び脱塵方法に関する。
図１は本発明による多数の集塵室で構成された大容量濾過集塵機の処理ガスの流れを示す概念図であって、粉塵排出元（１）から粉塵含有ガス（Ａ）は多数の集塵室（１２）からなる濾過集塵機（１０）内に移動し、上記濾過集塵機（１０）で粉塵含有ガス（Ａ）内の粉塵を濾過させた後、送風機（２）などのような流動手段によって清浄処理ガス（Ｂ）状態で大気中に排出される。
図２ないし３は本発明による多数の集塵室からなる大容量濾過集塵機の脱塵方法が使用された脱塵装置の第１の実施例を示したものであり、図示された脱塵装置は衝撃気流脱塵機構が適用され、濾過集塵機（１０）、ガス流入ライン（２０）、流入ガス流量制御装置（３０）、ガス排出ライン（４０）、排出ガス流量制御装置（５０）、第１、２メイン差圧センサー（６０、６１）、第１、２負荷差圧センサー（７０、７１）、脱塵機構（８０）、脱塵機構制御機（９０）、そして連動制御機（１００）からなる。
上記濾過集塵機（１０）は粉塵を濾過させるために、集塵フィルター（１１）が垂直下方形態に内設された集塵室（１２）を多数備え、上記多数の集塵室（１２）が一体になるようにする。
勿論、上記それぞれの集塵室（１２）には使用者の実施例によって、多数の集塵フィルター（１１）を脱塵空気噴射管（８１）の長手方向に単一の列または多数の列（Ｓ１、Ｓ２、Ｓ３、Ｓ４）の形態で設置することができる。
上記集塵室（１２）は粉塵含有ガス（Ａ）が最初に流入される上広下狭形態（漏斗状）のホッパー（１３）（ホッパー（１３）には回収された粉塵を排出するための回収粉塵排出装置（１４）が下端の下端部に形成されている）及び上記ホッパー（１３）の上端に垂直上向きに延長形成されて集塵フィルター（１１）が内設されるフィルター部（１５）と、上記フィルター部（１５）を経て粉塵が濾過された清浄処理ガス（Ｂ）が移動するように、上記フィルター部（１５）と連通される清浄部（１６）に区画されてなる。
さらに、多数の集塵室（１２）は多数が一方向に連続羅列されて一体をなし、上記図２に示されたように、それぞれの集塵室（１２）は分離板（１８）によって区画されていたり、図６に示されたように、分離板（１８）がなく相互間が開放されてそれぞれの集塵室（１２）が同一のホッパー（１３）を備えることもでき、多数の集塵室（１２）が同一のホッパー（１３）からなる場合、スクリューコンベヤー（１９’）がホッパー（１３）の底面側に設置され、ホッパー（１３）の底面に溜まる粉塵をホッパー（１３）の一側に開口された回収粉塵排出装置（１４）に移動させて外部に排出されるようにする。勿論、上記スクリューコンベヤー（１９’）の作動のためのスクリューコンベヤー駆動装置（１９）が別途備えられることは当然である。
上記ガス流入ライン（２０）は図２、４、５、６に示されたように、それぞれの集塵室（１２）内部、さらに詳細には各集塵室（１２）のホッパー（１３）に一端が連通連結され、他端は粉塵排出元（１）と連通連結され、上記粉塵排出元（１）で発生した粉塵含有ガス（Ａ）を上記集塵室（１２）内部に移動させるためのものである。勿論、上記ガス流入ライン（２０）を介した粉塵含有ガス（Ａ）は別途の送風機など多様な流動装置によって流動され、上記集塵室（１２）に連通されるガス流入ライン（２０）の一端の外周縁には多数の処理ガス流入分岐管（２１）が分岐形成され、それぞれの集塵室（１２）に連通されるようにすることは当然である。
上記流入ガス流量制御装置（３０）は図５に示されたように、多数の集塵室（１２）と連通連結されるそれぞれの処理ガス流入分岐管（２１）に形成され、上記各集塵室（１２）に流入される粉塵含有ガス（Ａ）流量を制御するようにする。勿論、上記流入ガス流量制御装置（３０）は後述の排出ガス流量制御装置（５０）と同様にバルブ（Ｖ６、Ｖ７、Ｖ８、Ｖ９、Ｖ１０）などからなり、使用者の選択に応じてバルブ以外に流量調節が可能な多様な装置で代替可能である。勿論、使用者の実施例によって、図２、４、６のように流入ガス流量制御装置（３０）が使用されないこともある。
上記ガス排出ライン（４０）は図２、４、５、６に示されたように、それぞれの集塵フィルター（１１）を経て濾過された清浄処理ガス（Ｂ）を排出するために各集塵室（１２）の清浄部（１６）と連通連結される処理ガス排出分岐管（４１）と連結された排出管を意味する。すなわち、本発明の各集塵室（１２）上部に位置する清浄部（１６）には処理ガス排出分岐管（４１）が連結され、かかるそれぞれの処理ガス排出分岐管（４１）は単一のガス排出ライン（４０）と連通結合されるように構成した。
上記排出ガス流量制御装置（５０）は図２、４、５、６に示されたように、集塵室（１２）の各処理ガス排出分岐管（４１）に形成され、上記各集塵室（１２）から排出される濾過された清浄処理ガス（Ｂ）の流量を制御するようにする。勿論、上記排出ガス流量制御装置（３０）はバルブ（Ｖ１、Ｖ２、Ｖ３、Ｖ４、Ｖ５）などからなり、使用者の選択に応じてバルブ以外に流量調節が可能な多様な装置で代替可能である。
第１、２メイン差圧センサー（６０、６１）は図２に示されたように、本発明で多数の集塵室（１２）からなる濾過集塵機（１０）を処理ガスが通過する前後の圧力差を測定するためのものであり、上記第１メイン差圧センサー（６０）はガス流入ライン（２０）に設置され、上記第２メイン差圧センサー（６１）はガス排出ライン（４０）に設置される。
（勿論、上記第１メイン差圧センサー（６０）はガス流入ライン（２０）で多数の処理ガス流入分岐管（２１）の形成全段に設置され、上記第２メイン差圧センサー（６１）はガス排出ライン（４０）で多数の処理ガス排出分岐管（４１）が連通連結された部分後段に設置され、多数の集塵室（１２）からなる濾過集塵機（１０）内に流入される粉塵含有ガス（Ａ）の総流入圧力及び粉塵が濾過された清浄処理ガス（Ｂ）の総排出圧力を測定できることは当然である。）
上記第１、２負荷差圧センサー（７０、７１）は図２に示されたように、濾過集塵機（１０）内の多数の集塵室（１２）それぞれに一対に設置され、各集塵室（１２）において集塵フィルター（１１）を通過する前後の集塵室（１２）ガス圧力を測定するためのものであり、上記第１負荷差圧センサー（７０）は各集塵室（１２）に形成されて粉塵含有ガス（Ａ）がホッパー（１３）に流入されるようにする処理ガス流入分岐管（２１）に設置され、上記第２負荷差圧センサー（７１）は集塵フィルター（１１）を経て濾過された清浄処理ガス（Ｂ）を外部に排出させるために処理ガス排出分岐管（４１）に設置されるようにする。これにより、集塵フィルター（１１）を通過する前後の圧力差をそれぞれの集塵室（１２）別に測定できるようになる。
図２、３、５、６に示された上記脱塵機構（８０）は衝撃気流方式の脱塵機構であって、それぞれの集塵室（１２）に設置され、さらに詳細にはフィルター部（１５）と連通される清浄部（１６）に設置される。図２、３、５、６に示された上記脱塵機構（８０）は脱塵空気噴射管（８１）と上記脱塵空気噴射管（８１）の一端の外周縁に形成された脱塵空気噴射ノズル（８２）、脱塵用圧縮空気タンク（８４）、そして上記脱塵空気噴射管（８１）及び上記圧縮空気タンク（８４）に両端が連通されて脱塵空気の量を制御する圧縮空気制御バルブ（８３）で構成される。上記脱塵空気噴射管（８１）は清浄部（１６）内の集塵フィルター（１１）の上部に設置され、上記フィルター部（１５）内に形成されている集塵フィルター（１１）は上記脱塵空気噴射管（８１）の長手方向に上記脱塵空気噴射ノズルの位置に対応するように多数の列の形態で設置される。
一方、図４は逆気流洗浄方式脱塵機構が適用された濾過集塵機を図示したものであり、脱塵用空気流入管（４２）を別途備え、上記脱塵用空気流入管（４２）から分岐される多数の脱塵用空気流入分岐管（４３）を、各集塵室（１２）の清浄部（１６）または処理ガス排出分岐管（４１）に連通させて、多数の集塵フィルター（１１）すべてに脱塵空気（Ｃ）を同時に流入させて脱塵されるようにすることもできる。勿論、上記多数の脱塵用空気流入分岐管（４３）それぞれにも流量を制御するための脱塵用空気流量制御装置（４４）を設置することができる。上記脱塵用空気流量制御装置（４４）はバルブ（ＶＲ１、ＶＲ２、ＶＲ３、ＶＲ４、ＶＲ５）などからなり、使用者の選択に応じてバルブ以外に流量調節が可能な多様な装置で代替可能である。また上記脱塵空気（Ｃ）は押圧用送風機（図示しない）などを利用して供給され、図４を例に挙げて詳細に説明すると、脱塵段階で上記排出ガス流量制御装置（５０）が閉まった状態で上記脱塵用空気流量制御装置（４４）を完全に開放した後、押圧用送風機を利用して脱塵対象集塵室（１２）内に脱塵用空気を集塵フィルターの濾過方向と反対方向に供給したり、押圧用送風機を別途使用しなくても上記処理ガス流入分岐管（２１）が開いていたら濾過集塵機（１０）後段の送風機（２）の吸入力によって脱塵空気（Ｃ）が脱塵用空気流入分岐管（４３）を介して集塵フィルターの濾過方向と反対方向に供給されて集塵フィルター（１１）表面に付着した粉塵が脱離して脱塵される。
かかる脱塵機構（８０）としては使用者の選択に応じて、高圧の圧縮空気を集塵フィルター（１１）内部に高速で噴射する衝撃気流脱塵装置、押圧送風機などを利用して所定の時間で集塵フィルター（１１）の濾過方向と反対方向に流量を通過させて粉塵を脱塵させる逆気流洗浄脱塵装置、上記集塵フィルター（１１）を外力によって振動させて脱塵させる振動脱塵装置、音波発生器を利用して音波による振動で集塵フィルター（１１）を脱塵させる音波脱塵装置のうち１つを使用することできる。
上記連動制御機（１００）は図２、４、５、６に示されたように、上記濾過集塵機（１０）の脱塵開始及び終了、上記濾過集塵機（１０）を構成する多数の集塵室（１２）の脱塵順序及び脱塵間隔を制御するための装置であり、上記脱塵機構制御機（９０）は上記連動制御機（１００）によって各集塵室（１２）の脱塵が開始される時、各集塵室内の脱塵機構（８０）及び脱塵過程を制御する手段である。したがって、上記連動制御機（１００）と上記脱塵機構制御機（９０）は相互通信が可能でなければならず、場合によっては１つの制御機に統合することもできる。
上記連動制御機（１００）は上記脱塵機構制御機（９０）以外に、多数の集塵室（１２）に形成されているそれぞれの流入ガス流量制御装置（３０）と排出ガス流量制御装置（５０）とも通信し、上記濾過集塵機（１０）の圧力損失値によって脱塵が開始される脱塵方式では上記第１、２メイン差圧センサー（６０、６１）とも通信する。
すなわち、上記連動制御機（１００）は流入ガス及び排出ガス流量制御装置（３０、５０）、第１、２メイン差圧センサー（６０、６１）、脱塵機構制御機（９０）などと通信し、使用者によって流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）の開閉率と開閉時間間隔、上記濾過集塵機（１０）の脱塵開始、多数の集塵室（１２）間の脱塵順序と脱塵時間間隔を多様に制御することができるようにする。
以下では上記のような構成要素を有する本発明の好ましい実施例の大容量濾過集塵機脱塵方法を説明する。
かかる脱塵方法は大容量濾過集塵機（１０）において、使用者が事前に指定した所定の周期（Ｔ０）によって、または上記濾過集塵機（１０）を通過する前の処理ガス定圧と通過した後の処理ガス定圧の差値、すなわち濾過集塵機の圧力損失値が予め指定した所定値に達する場合開始される。（上記所定値は使用者が事前に指定した一定値を意味し、これは後述の所定値にも同一に適用される）
第１の実施例では図７、８に示されたように、
１．多数の集塵室（１２）からなる大容量濾過集塵機（１０）で、脱塵対象集塵室（１２）の流量を所定の時間（Ｔ１）遮断する段階（Ｓ１００）：多数の集塵室（１２）のうち１つの集塵室（１２）（脱塵対象となる集塵室（１２）、これは多数の集塵室（１２）のうち１つが選択され、これは使用者によって多様に順序を変更することができる）を通過する流量を流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）をオフ（ｏｆｆ）にすることで、完全に遮断して使用者が指定した所定の時間を経過させる段階である。
２．上記段階（Ｓ１００）の後、上記脱塵対象集塵室（１２）の集塵フィルター（１１）に捕集された粉塵を、脱塵機構（８０）を介して脱塵させる段階（Ｓ２００）：上記脱塵機構（８０）としては集塵室（１２）内部の集塵フィルター（１１）を脱塵させることができる前述の多様な機構のうち１つを使用することができる。上記図２ないし３の衝撃気流脱塵機構が適用された例を通じて詳細に説明すると、上記各集塵室（１２）内でのすべての脱塵操作は上記脱塵機構制御機（９０）を介して制御され、図３の場合は各集塵室には総４個の脱塵空気噴射管（８１）及び圧縮空気制御バルブ（８３）が設置されており、上記各脱塵空気噴射管（８１）は４個の集塵フィルターを同時に脱塵するように構成されている。例えば脱塵対象集塵室が図３の左側末端の集塵室（１２）の場合、脱塵機構制御機（９０）は圧縮空気制御バルブ（８３）と通信し、図３に示されたＳ１、Ｓ２、Ｓ３、Ｓ４に該当する各圧縮空気制御バルブ（８３）間の作動順序で及び作動時間間隔と、個別圧縮空気制御バルブ（８３）の開閉時間を制御することで集塵室（１２）内のすべての集塵フィルター（１１）を脱塵するようになる。
３．上記段階（Ｓ２００）の後、脱塵された粉塵が沈降して下端部のホッパー（１３）と回収粉塵排出装置（１４）を経て外部に排出されるように、所定の時間（Ｔ２）経過させる段階（Ｓ３００）：これは流量を遮断せずに脱塵する既存脱塵システムの問題点である脱塵時に瞬間的に脱塵された粉塵が再び再流入して集塵フィルター（１１）を通過したり、または集塵フィルター（１１）に再付着して脱塵効率が低下する現象を防止するようにする。
４．上記段階（Ｓ３００）の後、上記脱塵対象集塵室（１２）を使用者が指定した所定の数値だけ開放し、所定の時間（Ｔ３）運転させる段階（Ｓ４００）：この時脱塵対象集塵室（１２）の開放率は上記脱塵対象集塵室（１２）が完全（１００％）開放されて流量が１００％流動することを正常流量とした時、正常流量の５０％以下であり、さらに好ましくは正常流量の５ないし２０％程度である。したがって、上記Ｓ４００段階はこのように脱塵対象集塵室（１２）の流量が正常流量の５０％以下を維持した状態で脱塵対象集塵室（１２）を所定の時間（Ｔ３）運転させる段階である。勿論、使用者によって上記所定数値は変動が可能である。
かかる操作は脱塵直後一時的にきれいになった集塵フィルター（１１）の集塵効率を高めるためのものであり、濾過速度を低めて集塵効率を高め、これと共に集塵フィルター（１１）表面に初期粉塵層が形成されるための時間を確保するためである。
すなわち、脱塵後意図的に濾過速度を低めれば集塵効率も増加し、上記集塵フィルター（１１）表面に初期粉塵層が形成されるようになる。
所定の時間で低い濾過速度条件で集塵フィルター（１１）表面に粉塵層が形成されると、かかる粉塵層は高効率フィルターの役目を果たし、また正常濾過速度（１００％正常流量）に復帰した時にも集塵フィルター（１１）を通過する粉塵の濃度をかなり低めることができる。
上記Ｓ４００段階で上記集塵室（１２）を通過する流量の制御は上記流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）を介して行われ、上記流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）の開閉及び開閉率制御はすべて上記連動制御機（１００）を介して行われる。
５．上記段階（Ｓ４００）の後、上記脱塵対象集塵室（１２）を完全開放（１００％開放）して所定の時間（Ｔ４）運転させる段階（Ｓ５００）。
６．上記段階（Ｓ５００）の後、残っている多数の残りの集塵室（１２）を使用者が指定した所定の順序によって、上記の段階と同一に反復させて脱塵させる過程：すなわち上記のように多数の集塵室（１２）のうち脱塵対象となった１つの集塵室（１２）を脱塵させた後、残っている他の集塵室（１２）を上記のような方法で脱塵させて、すべての集塵室（１２）が所定の順序によって（使用者が指定した順序）によって脱塵がなされるようにする。この時各集塵室（１２）間の順序と時間間隔はすべて上記連動制御機（１００）を介して制御される。
７．多数の集塵室（１２）全体の脱塵がすべて終わると（（１））、所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１１）の圧力損失が使用者が指定した所定値に達した場合、また脱塵が順次再反復（（２）−＞（３）…）されるようにすることは当然である。この時の時間周期（Ｔ０）及び脱塵開始の圧力損失値はすべて上記連動制御機（１００）を介して入力されて調整される。
第２の実施例では図９に示されたように、
１．多数の集塵室（１２）からなる濾過集塵機（１０）のうち、脱塵対象集塵室（１２）を使用者が指定した所定の割合で開放した状態で所定の時間（Ｔ１）経過させる段階（Ｓ１００）：上記脱塵機構（８０）を介して脱塵する前の上記第１の実施例では流入ガス流量制御装置（３０）及び排出ガス流量制御装置（５０）をすべてオフ（ｏｆｆ）にしてガスが流動しないように完全に遮断したが、第２の実施例では所定の数値に開放した状態で所定の時間を経過させながら粉塵含有ガス（Ａ）を上記脱塵対象集塵室（１２）に通過させる。この時脱塵対象集塵室（１２）の開放率は上記脱塵対象集塵室（１２）が完全（１００％）開放されて流量が１００％流動されることを正常流量とした時、正常流量の５０％以下であり、さらに好ましくは正常流量の５ないし２０％程度である。勿論、使用者によって上記所定数値は変動が可能である。
２．上記脱塵対象集塵室（１２）の集塵フィルター（１１）に捕集された粉塵を脱塵機構（８０）を介して脱塵させる段階（Ｓ２００）。
３．上記段階（Ｓ２００）の後、脱塵された粉塵が沈降して下端部のホッパー（１３）と回収粉塵排出装置（１４）を経て外部に排出されるように、所定の時間（Ｔ２）経過させる段階（Ｓ３００）：上記集塵室（１２）を通過する流量が正常流量に比べて低い状態を維持すれば脱塵された粉塵が沈降して最終的に排出装置（１４）を経て外部に排出されるのに有利であり、また脱塵直後瞬間的に脱塵された粉塵が再流入して集塵フィルター（１１）を通過したり、または集塵フィルター（１１）に再付着して脱塵効率が低下する現象を防止することができる。
４．上記脱塵対象集塵室（１２）を１００％完全開放して正常流量状態で所定の時間（Ｔ４）運転させる段階（Ｓ５００）：第２の実施例ではすでに脱塵対象集塵室（１２）が使用者が指定した所定数値程度に開放した状態であるため、第１の実施例のように、脱塵対象集塵室（１２）を１００％完全開放する前に５ないし２０％所定数値を開放して運転させる段階（Ｓ４００）が省略される。
５．上記段階（Ｓ５００）の後、残っている多数の残りの集塵室（１２）を所定の順序によって、上記の段階と同一に反復させて脱塵させる過程：すなわち上記のように多数の集塵室（１２）のうち脱塵対象となった１つの集塵室（１２）を脱塵させた後、残っている他の集塵室（１２）を上記のような方法で脱塵し、すべての集塵室（１２）が所定の順序によって（使用者が指定した順序）によって脱塵されるようにする。この時各集塵室（１２）間の順序と時間間隔はすべて上記連動制御機（１００）を介して制御される。
６．多数の集塵室（１２）全体の脱塵がすべて終わると（（１））、所定の時間周期（Ｔ０）によって、または上記濾過集塵機（１１）の圧力損失が、使用者が指定した所定値に達した場合、また脱塵が順次再反復し（（２）→（３）…）されるようにすることは当然である。この時の時間周期（Ｔ０）及び脱塵開始の圧力損失値はすべて上記連動制御機（１００）を介して入力されて調整される。
前述の大容量濾過集塵機脱塵方法で記載した所定の時間周期（Ｔ０）及び所定の時間（Ｔ１、Ｔ２、Ｔ３、Ｔ４）は上記連動制御機（１００）を介して使用者によって多様に変更可能である。
さらに、上記で述べられない図面の符号である‘１７’は集塵フィルター（１１）が設置されるように集塵室（１２）に水平設置される‘集塵フィルター設置板’を示し、‘８１、８２’は脱塵機構（８０）の実施例を示し、衝撃気流方式脱塵機構の‘脱塵空気噴射管’と‘脱塵空気噴射ノズル’をそれぞれ示し、‘８３’はそれぞれの脱塵空気噴射管（８１）に供給される圧縮空気の流量を調節するための‘圧縮空気制御バルブ’を示し、‘８４’は‘脱塵用圧縮空気貯蔵タンク’を示す。
以上のように、本発明は限定された実施例と図面によって説明されたが、本発明はこれによって限定されるものではなく、本発明が属する技術分野で通常の知識を有する者によって本発明の技術思想と下記に記載する特許請求の範囲の均等範囲内で多様な修正及び変更が可能である。 Before the various embodiments of the invention are described in detail, the application is not limited by the details of the construction and arrangement of the components set forth in the following detailed description or illustrated in the drawings. The present invention may be embodied and implemented in other embodiments and may be performed in various ways. Also, the direction of the device or element (eg, “front”, “back”, “up”, “down”, “top”, “bottom”) , "Left", "right", "lateral"), etc., the expressions and predicates used herein are merely for the purpose of simplifying the description of the invention. It does not indicate or imply that such a device or element simply has a specific orientation. In addition, terms such as “first” and “second” are used in the present application and the appended claims for the purpose of explanation and indicate or mean relative importance or meaning. is not.
In order to achieve the above object, the present invention has the following features.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in the specification and claims should not be construed to be limited to ordinary or literal meaning, and the inventor shall make his or her invention in the best possible manner. For the purpose of explanation, it should be interpreted with the meaning and concept consistent with the technical idea of the present invention in accordance with the principle that the concept of terms can be appropriately defined.
Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. It should be understood that there are various equivalents and variations that can be substituted.
Hereinafter, a large-capacity filtration dust collector dedusting apparatus and method according to a preferred embodiment of the present invention will be described in detail with reference to FIGS.
Prior to the description of the dust removal method for the large-capacity filtration dust collector according to the present invention, a dust removal apparatus using the dust removal method for the large-capacity filtration dust collector will be described.
The present invention relates to a dust collection method for periodically removing dust collected by a dust collection filter (11) of a filtration dust collector (10) comprising a large number of dust collection chambers (12). ) Through the dust collection filter (11) and discharged into the atmosphere mainly when discharged, and the efficiency of the dust collection filter (11) increases when the filtration speed is low. ({Filtration speed = Dust collection filter (11) passage flow rate / Dust collection filter (11) Surface area (or filtration area)}), collected by the initial dust layer formed by dust adhering to the surface of the dust collection filter (11) The present invention relates to a dust removing device and a dust removing method for a filter dust collector for reducing the amount of dust discharged into the atmosphere and at the same time enhancing the dust removing efficiency by utilizing the characteristic that dust efficiency is greatly increased.
FIG. 1 is a conceptual diagram showing the flow of processing gas in a large-capacity filtration dust collector constituted by a large number of dust collecting chambers according to the present invention, and dust-containing gas (A) is collected from a dust discharge source (1). After moving into the filter dust collector (10) consisting of the chamber (12), the dust in the dust-containing gas (A) is filtered by the filter dust collector (10), and then cleaned by a fluid means such as the blower (2). It is discharged into the atmosphere in the processing gas (B) state.
FIGS. 2 to 3 show a first embodiment of a dust removing apparatus in which the dust removing method for a large-capacity filtering dust collector comprising a large number of dust collecting chambers according to the present invention is used. The impact airflow dedusting mechanism is applied, and the filtration dust collector (10), the gas inflow line (20), the inflow gas flow rate control device (30), the gas discharge line (40), the exhaust gas flow rate control device (50), the first, 2 main differential pressure sensors (60, 61), first and second load differential pressure sensors (70, 71), a dust removal mechanism (80), a dust removal mechanism controller (90), and an interlocking controller (100). .
The filtration dust collector (10) includes a large number of dust collection chambers (12) in which dust collection filters (11) are vertically arranged in order to filter dust, and the many dust collection chambers (12) are integrated. To be.
Of course, in each of the dust collection chambers (12), a plurality of dust collection filters (11) may be arranged in a single row or a plurality of rows in the longitudinal direction of the dust removal air injection pipe (81) according to the user's embodiment. It can be installed in the form of S1, S2, S3, S4).
The dust collection chamber (12) is a hopper (13) having a narrow upper and lower form (funnel shape) into which dust-containing gas (A) is first introduced (for discharging the collected dust to the hopper (13)). The collected dust discharge device (14) is formed at the lower end of the lower end) and the filter portion (15) which is extended vertically upward at the upper end of the hopper (13) and the dust collecting filter (11) is installed inside And the cleaning part (16) communicated with the filter part (15) so that the cleaning process gas (B) from which dust has been filtered through the filter part (15) moves.
Further, a large number of dust collecting chambers (12) are arranged in one direction and are integrated into one, and each dust collecting chamber (12) is partitioned by a separating plate (18) as shown in FIG. As shown in FIG. 6, there is no separation plate (18), and the dust collection chambers (12) can be provided with the same hopper (13) without being separated from each other. When the dust chamber (12) is composed of the same hopper (13), the screw conveyor (19 ′) is installed on the bottom surface side of the hopper (13), and dust accumulated on the bottom surface of the hopper (13) is collected in the hopper (13). It is made to move to the collection | recovery dust discharge | release apparatus (14) opened to the side, and is discharged | emitted outside. Of course, it is natural that a screw conveyor driving device (19) for operating the screw conveyor (19 ') is separately provided.
As shown in FIGS. 2, 4, 5, and 6, the gas inflow line (20) is provided in each dust collection chamber (12), and more specifically, in the hopper (13) of each dust collection chamber (12). One end is connected in communication, the other end is connected in communication with the dust discharge source (1), and the dust-containing gas (A) generated in the dust discharge source (1) is moved into the dust collection chamber (12). Is. Of course, the dust-containing gas (A) through the gas inflow line (20) is flowed by various flow devices such as a separate blower and is connected to the dust collection chamber (12) at one end of the gas inflow line (20). It is natural that a large number of process gas inflow branch pipes (21) are branched and formed on the outer peripheral edge of the pipe and communicated with the respective dust collection chambers (12).
As shown in FIG. 5, the inflow gas flow rate control device (30) is formed in each processing gas inflow branch pipe (21) connected in communication with a number of dust collection chambers (12). The flow rate of the dust-containing gas (A) flowing into the chamber (12) is controlled. Of course, the inflow gas flow rate control device (30) is composed of valves (V6, V7, V8, V9, V10), etc., similar to the exhaust gas flow rate control device (50) described later, and other than the valves according to the user's selection. It can be replaced with various devices that can adjust the flow rate. Of course, the inflow gas flow rate control device 30 may not be used as shown in FIGS.
As shown in FIGS. 2, 4, 5, and 6, the gas discharge line (40) collects each dust collection to discharge the cleaning gas (B) filtered through the respective dust collection filter (11). It means a discharge pipe connected to the processing gas discharge branch pipe (41) connected to the clean section (16) of the chamber (12). That is, a processing gas discharge branch pipe (41) is connected to the cleaning section (16) located above each dust collection chamber (12) of the present invention, and each of the processing gas discharge branch pipes (41) is a single unit. The gas exhaust line (40) was configured to be connected to the gas exhaust line (40).
As shown in FIGS. 2, 4, 5, and 6, the exhaust gas flow rate control device (50) is formed in each processing gas discharge branch pipe (41) of the dust collection chamber (12). The flow rate of the filtered cleaning process gas (B) discharged from (12) is controlled. Of course, the exhaust gas flow rate control device (30) is composed of valves (V1, V2, V3, V4, V5), etc., and can be replaced by various devices other than the valve that can adjust the flow rate according to the user's choice. is there.
As shown in FIG. 2, the first and second main differential pressure sensors (60, 61) are pressures before and after the processing gas passes through the filtration dust collector (10) comprising a large number of dust collection chambers (12) in the present invention. The first main differential pressure sensor (60) is installed in the gas inflow line (20), and the second main differential pressure sensor (61) is installed in the gas discharge line (40). Is done.
(Of course, the first main differential pressure sensor (60) is installed in all stages of the formation of a large number of process gas inflow branch pipes (21) in the gas inflow line (20), and the second main differential pressure sensor (61) Containing dust that is installed in the rear stage of a part where a large number of processing gas discharge branch pipes (41) are connected in communication with the gas discharge line (40) and flows into a filter dust collector (10) consisting of a large number of dust collecting chambers (12). (Of course, it is possible to measure the total inflow pressure of the gas (A) and the total discharge pressure of the clean processing gas (B) from which dust has been filtered.)
As shown in FIG. 2, the first and second load differential pressure sensors (70, 71) are installed in pairs in each of a large number of dust collecting chambers (12) in the filter dust collector (10). The dust collection chamber (12) before and after passing through the dust collection filter (11) in (12) is for measuring the gas pressure, and the first load differential pressure sensor (70) is used for each dust collection chamber (12). The second load differential pressure sensor (71) is disposed in the dust collecting filter (11), and is installed in the processing gas inflow branch pipe (21) that allows the dust-containing gas (A) to flow into the hopper (13). In order to discharge the clean processing gas (B) filtered through () to the outside, it is installed in the processing gas discharge branch pipe (41). Thereby, the pressure difference before and after passing through the dust collection filter (11) can be measured for each dust collection chamber (12).
The dust removal mechanism (80) shown in FIGS. 2, 3, 5, and 6 is an impact airflow type dust removal mechanism and is installed in each dust collection chamber (12). 15) installed in the cleaning section (16) communicated with. The dust removal mechanism (80) shown in FIGS. 2, 3, 5, and 6 is a dust removal air formed at the outer peripheral edge of one end of the dust removal air injection pipe (81) and the dust removal air injection pipe (81). Compressed air whose ends are connected to the injection nozzle (82), the compressed air tank for dedusting (84), and the dedusted air spray pipe (81) and the compressed air tank (84) to control the amount of dedusted air It consists of a control valve (83). The dedusting air injection pipe (81) is installed on the upper part of the dust collection filter (11) in the clean section (16), and the dust collection filter (11) formed in the filter section (15) In the longitudinal direction of the dust air jet pipe (81), the dust air jet pipes (81) are installed in the form of a number of rows so as to correspond to the positions of the dust dust jet nozzles.
On the other hand, FIG. 4 shows a filtration dust collector to which a reverse airflow cleaning type dust removal mechanism is applied, which is separately provided with a dust removal air inflow pipe (42) and is branched from the dust removal air inflow pipe (42). A large number of dust-collecting air inflow branch pipes (43) communicated with the cleaning section (16) or the processing gas discharge branch pipe (41) of each dust collection chamber (12), and a large number of dust collection filters (11 ) Dust removal air (C) can be allowed to flow in all at the same time so that dust is removed. Of course, a dust removal air flow control device (44) for controlling the flow rate can also be installed in each of the large number of dust removal air inflow branch pipes (43). The dedusting air flow rate control device (44) is composed of valves (VR1, VR2, VR3, VR4, VR5), etc., and can be replaced with various devices other than the valve that can adjust the flow rate according to the user's choice. is there. Further, the dedusted air (C) is supplied by using a pressure blower (not shown) or the like, and will be described in detail with reference to FIG. 4 as an example. After the dust removal air flow control device (44) is completely opened in the closed state, the dust collection air is filtered into the dust collection target dust collection chamber (12) using a pressure blower. If the processing gas inflow branch pipe (21) is open even if it is supplied in the direction opposite to the direction or the pressure blower is not used separately, the dust is removed by the suction input of the blower (2) after the filtration dust collector (10). (C) is supplied in the direction opposite to the filtration direction of the dust collection filter through the dust removal air inflow branch pipe (43), and the dust adhering to the surface of the dust collection filter (11) is desorbed and removed.
As such a dust removal mechanism (80), depending on the user's choice, a high-pressure compressed air is ejected at high speed into the dust collection filter (11) at high speed using a shock air dust removal device, a pressure blower, or the like for a predetermined time. In the reverse airflow cleaning and dedusting device for dedusting the dust by passing the flow rate in the direction opposite to the filtration direction of the dust collection filter (11), the vibration dedusting for dedusting by vibrating the dust collection filter (11) by external force One of the sound wave dedusting devices that dedust the dust collection filter (11) by vibration using sound waves using a device and a sound wave generator can be used.
As shown in FIGS. 2, 4, 5, and 6, the interlock controller (100) includes a dust collection start and end of the filtration dust collector (10), and a large number of dust collection chambers constituting the filtration dust collector (10). (12) is a device for controlling the dust removal order and dust removal interval, and the dust removal mechanism controller (90) starts dust removal in each dust collection chamber (12) by the interlock controller (100). Is a means for controlling the dust removal mechanism (80) and the dust removal process in each dust collection chamber. Therefore, the interlock controller (100) and the dust removal mechanism controller (90) must be able to communicate with each other, and in some cases, can be integrated into one controller.
In addition to the dust removal mechanism controller (90), the interlock controller (100) is provided with a respective inflow gas flow rate control device (30) and exhaust gas flow rate control device (30) formed in a number of dust collection chambers (12). 50), and in the dust removal method in which dust removal is started by the pressure loss value of the filter dust collector (10), it also communicates with the first and second main differential pressure sensors (60, 61).
That is, the interlock controller (100) communicates with the inflow gas and exhaust gas flow rate control devices (30, 50), the first and second main differential pressure sensors (60, 61), the dust removal mechanism controller (90), and the like. The opening / closing rate and opening / closing time interval of the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50) by the user, the start of dedusting of the filter dust collector (10), and between a large number of dust collection chambers (12) The dust removal order and the dust removal time interval can be controlled in various ways.
Hereinafter, a method for dedusting a large-capacity filtration dust collector according to a preferred embodiment of the present invention having the above-described components will be described.
Such a dedusting method is a large-capacity filtration dust collector (10) in a predetermined cycle (T0) designated in advance by the user, or a treatment gas constant pressure before passing through the filtration dust collector (10). It starts when the difference value of the gas constant pressure, that is, the pressure loss value of the filter dust collector reaches a predetermined value specified in advance. (The above-mentioned predetermined value means a constant value designated in advance by the user, and this also applies to the predetermined value described later)
In the first embodiment, as shown in FIGS.
1. A step of shutting off the flow rate of the dust collection target dust collection chamber (12) for a predetermined time (T1) with a large-capacity filtration dust collector (10) comprising a large number of dust collection chambers (12) (S100): 12), one dust collection chamber (12) (a dust collection chamber (12) to be dedusted is selected, and one of a number of dust collection chambers (12) is selected, and this is variously ordered by the user. The inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50) are turned off by turning off the flow rate passing through the predetermined flow rate specified by the user. This is the stage of elapse of time.
2. After the step (S100), the step of dedusting the dust collected by the dust collection filter (11) of the dust collection target dust collection chamber (12) through the dust removal mechanism (80) (S200): As the dust removal mechanism (80), one of the various mechanisms described above that can dedust the dust collection filter (11) inside the dust collection chamber (12) can be used. Describing in detail through an example in which the impact airflow dust removing mechanism shown in FIGS. 2 to 3 is applied, all dust removing operations in the dust collecting chambers (12) are performed via the dust removing mechanism controller (90). In the case of FIG. 3, a total of four dedusting air injection pipes (81) and compressed air control valves (83) are installed in each dust collecting chamber. ) Is configured to dedust four dust collecting filters simultaneously. For example, when the dust collection chamber is the dust collection chamber (12) at the left end in FIG. 3, the dust removal mechanism controller (90) communicates with the compressed air control valve (83), and S1 shown in FIG. , S2, S3, S4 The dust collection chamber (12) by controlling the operation sequence between the compressed air control valves (83), the operation time interval, and the open / close time of the individual compressed air control valve (83) All the dust collection filters (11) in the inside are dedusted.
3. After the step (S200), a predetermined time (T2) is allowed to elapse so that the dedusted dust settles and is discharged to the outside through the hopper (13) at the lower end and the collected dust discharge device (14). Step (S300): This is a problem of the existing dust removal system that removes dust without shutting off the flow rate. When dust is removed, the dust that has been instantaneously removed again flows again and passes through the dust collection filter (11). Or reattaching to the dust collecting filter (11) to prevent a phenomenon that the dust removal efficiency is lowered.
4). After the step (S300), the dust collection target dust collection chamber (12) is opened by a predetermined numerical value designated by the user and is operated for a predetermined time (T3) (S400): At this time, the dust collection target collection The open rate of the dust chamber (12) is 50% or less of the normal flow rate when the dust collection chamber (12) to be dedusted is completely opened (100%) and the flow rate is 100%. More preferably, it is about 5 to 20% of the normal flow rate. Accordingly, in step S400, the dust collection target dust collection chamber (12) is operated for a predetermined time (T3) in a state where the flow rate of the dust collection target dust collection chamber (12) is maintained at 50% or less of the normal flow rate. It is a stage. Of course, the predetermined numerical value can be changed by the user.
This operation is to increase the dust collection efficiency of the dust collection filter (11) that has been temporarily cleaned immediately after dedusting, and lowers the filtration speed to increase the dust collection efficiency, together with the dust collection filter (11) surface. This is to secure time for the initial dust layer to be formed.
That is, if the filtration rate is intentionally reduced after dedusting, the dust collection efficiency is also increased, and an initial dust layer is formed on the surface of the dust collection filter (11).
When a dust layer is formed on the surface of the dust collection filter (11) at a low filtration rate for a predetermined time, the dust layer serves as a high-efficiency filter and returns to a normal filtration rate (100% normal flow rate). Sometimes the concentration of dust passing through the dust collection filter (11) can be considerably reduced.
The flow rate passing through the dust collecting chamber (12) in step S400 is controlled through the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50), and the inflow gas flow rate control device (30 ) And the exhaust gas flow rate control device (50) are all opened and closed and the open / close rate control is performed via the interlock controller (100).
5. After the step (S400), the dust collection target dust collection chamber (12) is completely opened (100% opened) and operated for a predetermined time (T4) (S500).
6). After the step (S500), a process of dedusting a number of remaining dust collection chambers (12) by repeating a predetermined order designated by the user in the same manner as the above step: After dusting out one dust collection chamber (12), which is a target for dust removal, among the many dust collection chambers (12), the remaining dust collection chamber (12) is removed by the method described above. Dedusting is performed so that all dust collection chambers (12) are dedusted in a predetermined order (the order specified by the user). At this time, the order and time interval between the dust collecting chambers (12) are all controlled through the interlock controller (100).
7). When all of the dust collection chambers (12) are completely de-dusted ((1)), the pressure loss of the filter dust collector (11) becomes a predetermined value designated by the user according to a predetermined time period (T0). When it is reached, it is natural that the dedusting is sequentially repeated again ((2)-> (3) ...). The time period (T0) at this time and the pressure loss value at the start of dust removal are all input and adjusted via the interlocking controller (100).
In the second embodiment, as shown in FIG.
1. A stage in which a predetermined time (T1) elapses in a state where the dust collection target dust collection chamber (12) is opened at a predetermined ratio designated by the user among the filtration dust collector (10) including a large number of dust collection chambers (12). (S100): In the first embodiment before dust removal via the dust removal mechanism (80), all of the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50) are turned off. However, in the second embodiment, the dust-containing gas (A) is removed from the dust collection target dust collection chamber (12) while allowing a predetermined time to elapse while being opened to a predetermined numerical value. ). At this time, the open rate of the dust collection target dust collection chamber (12) is normal when the dust collection target dust collection chamber (12) is completely opened (100%) and the flow rate is 100% and the normal flow rate is set. It is 50% or less of the flow rate, more preferably about 5 to 20% of the normal flow rate. Of course, the predetermined numerical value can be changed by the user.
2. A step of dedusting dust collected by the dust collection filter (11) of the dust collection target dust collection chamber (12) through the dust removal mechanism (80) (S200).
3. After the step (S200), a predetermined time (T2) is allowed to elapse so that the dedusted dust settles and is discharged to the outside through the hopper (13) at the lower end and the collected dust discharge device (14). Step (S300): If the flow rate passing through the dust collecting chamber (12) is kept lower than the normal flow rate, the dust removed will settle and finally discharged to the outside through the discharge device (14). In addition, dust that has been instantaneously removed immediately after dust removal flows again through the dust collection filter (11) or reattaches to the dust collection filter (11) to remove dust. It is possible to prevent a phenomenon that the efficiency is lowered.
4). The dust collection target dust collection chamber (12) is completely opened 100% and operated at a normal flow rate for a predetermined time (T4) (S500): in the second embodiment, the dust collection target dust collection chamber (12) is already used. Is in a state of being opened to a predetermined value designated by the user, so that a predetermined value of 5 to 20% is set before fully opening the dust collection target dust collecting chamber (12) as in the first embodiment. The step of opening and operating (S400) is omitted.
5. After the step (S500), a process of dedusting a large number of remaining dust collecting chambers (12) in a predetermined order in the same manner as in the above step: a large number of dust collections as described above After dedusting one dust collection chamber (12), which is the target for dedusting, among the chambers (12), the remaining dust collection chamber (12) is dedusted in the manner as described above. The dust collection chamber (12) is dedusted in a predetermined order (the order specified by the user). At this time, the order and time interval between the dust collecting chambers (12) are all controlled through the interlock controller (100).
6). When all of the dust collection chambers (12) are completely de-dusted ((1)), the predetermined time period (T0) or the pressure loss of the filter dust collector (11) is a predetermined value designated by the user. It is natural that the dust removal is repeated again in order ((2) → (3)...). The time period (T0) at this time and the pressure loss value at the start of dust removal are all input and adjusted via the interlocking controller (100).
The predetermined time period (T0) and the predetermined time (T1, T2, T3, T4) described in the dust removal method of the large-capacity filtration dust collector described above can be changed in various ways by the user via the interlock controller (100). It is.
Further, the reference numeral “17”, which is not described above, indicates a “dust collection filter installation plate” horizontally installed in the dust collection chamber (12) so that the dust collection filter (11) is installed. 81 and 82 'show examples of the dust removal mechanism (80), which shows the' dedusting air injection pipe 'and' dedusting air injection nozzle 'of the impact airflow type dust removal mechanism, respectively, and' 83 'is the respective desorption mechanism. A 'compressed air control valve' for adjusting the flow rate of the compressed air supplied to the dust air injection pipe (81) is shown, and '84' shows a 'dedusted compressed air storage tank'.
As described above, the present invention has been described with reference to the limited embodiments and drawings. However, the present invention is not limited thereto, and those skilled in the art to which the present invention belongs have ordinary knowledge. Various modifications and changes can be made within the scope of the technical idea and the scope of claims described below.

１：粉塵排出元２：送風機
１０：濾過集塵機１１：集塵フィルター
１２：集塵室１３：ホッパー
１４：回収粉塵排出装置１５：フィルター部
１６：清浄部１７：集塵フィルター設置板
１８：分離板１９：スクリューコンベヤー駆動装置
１９’：スクリューコンベヤー２０：ガス流入ライン
２１：処理ガス流入分岐管３０：流入ガス流量制御装置
４０：ガス排出ライン４１：処理ガス排出分岐管
４２：脱塵用空気流入管４３：脱塵用空気流入分岐管
４４：脱塵用空気流量制御装置５０：排出ガス流量制御装置
６０：第１メイン差圧センサー６１：第２メイン差圧センサー
７０：第１負荷差圧センサー７１：第２負荷差圧センサー
８０：脱塵機構８１：脱塵空気噴射管
８２：脱塵空気噴射ノズル９０：脱塵機構制御機
１００：連動制御機
Ａ：粉塵含有ガスＢ：清浄処理ガス
Ｃ：脱塵空気 1: Dust discharge source 2: Blower 10: Filtration dust collector 11: Dust collection filter 12: Dust collection chamber 13: Hopper 14: Recovered dust discharge device 15: Filter unit 16: Clean unit 17: Dust collection filter installation plate 18: Separation plate 19: Screw conveyor drive
19 ': Screw conveyor 20: Gas inflow line 21: Process gas inflow branch pipe 30: Inflow gas flow rate control device 40: Gas exhaust line 41: Process gas exhaust branch pipe 42: Dedusting air inflow pipe 43: Dedusting air Inflow branch pipe 44: Dedusting air flow rate control device 50: Exhaust gas flow rate control device 60: First main differential pressure sensor 61: Second main differential pressure sensor 70: First load differential pressure sensor 71: Second load differential pressure Sensor 80: Dust removal mechanism 81: Dust removal air injection pipe 82: Dust removal air injection nozzle 90: Dust removal mechanism controller 100: Interlocking controller
A: Dust-containing gas B: Clean gas C: Dedusted air

Claims

A number of dust collecting chambers (12) in which dust collecting filters (11) are installed;
A gas inflow line (20) for supplying the dust-containing gas (A) into the plurality of dust collecting chambers (12);
A gas discharge line (40) connected to the processing gas discharge branch pipe (41) of each dust collection chamber (12) and for discharging the cleaning process gas (B) filtered by the dust collection filter (11). When,
An exhaust gas flow rate control device (50) that is installed in each of the processing gas discharge branch pipes (41) and controls the flow rate of gas discharged from each dust collection chamber (12);
First and second main differential pressure sensors installed in the gas inflow line (20) and the gas exhaust line (40), respectively, for measuring the pressure difference before and after passing through the multiple dust collection chambers (12). 60, 61),
A dust removal mechanism (80) installed in each dust collection chamber (12) to dedust the dust collected by the dust collection filter (11);
A dust removal mechanism controller (90) designed to control the operation of the dust removal mechanism (80) of each dust collection chamber (12);
A number of dust collection cycle periods (T0) of the plurality of dust collection chambers (12) and predetermined times (T1, T2, T3, T4) corresponding to the respective dust removal stages (S100, S200, S300, S400, S500); Controlling the order, the open / close rate and open / close time interval of the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50), the dedusting order and dedusting time interval between the multiple dust collection chambers (12), It communicates with the first and second main differential pressure sensors (60, 61) and communicates with the dust removal mechanism controller (90) to control the entire dust removal process of the multiple dust collection chambers (12). An interlocking controller (100) designed for
In a large-capacity filtration dust collector (10) comprising a large number of dust collection chambers (12), the pressure loss value of the filtration dust collector (10) reaches a predetermined value at a predetermined time period (T0) designated by the user or In the large-capacity filtration dust collector dedusting method in which all the dust collecting chambers (12) are sequentially dedusted,
A step (S100) of completely shutting off the flow rate of the first dust collection target dust collection chamber (12) by the exhaust gas flow rate control device (50 ) and waiting for a predetermined time (T1) immediately before the start of dust removal;
Dedusting dust collected by the dust collection filter (11) of the dust collection chamber (12) (S200);
Dust that has been dedusted is prevented from flowing again into the dust collection filter (11), and is discharged to the outside through the hopper (13) at the lower end of the dust collection chamber (12) and the dust discharge device (14) by sedimentation. A step (S300) of allowing a predetermined time (T2) to elapse with the flow rate of the dust collecting chamber (12) completely shut off,
Exhaust gas flow rate so that the flow rate passing through the dust collection chamber (12) is 5 to 20% compared to the normal flow rate where the dust collection target dust collection chamber (12) whose flow rate is completely blocked is opened 100%. The control device (50) opens the dust collection target dust collection chamber (12) for operation, thereby lowering the filtration speed and improving the dust collection efficiency compared to the normal flow rate, and the dust collection filter (11). An initial dust layer is formed on the surface, and the initial dust layer is operated for a predetermined time (T3) so that the dust collection efficiency of the dust collection filter (11) is increased (S400);
A step (S500) of operating for a predetermined time (T4) in a normal flow rate state in which the dust collection target dust collection chamber (12) is 100% open;
A step (S600) of dedusting the second dust collection target dust collection chamber (12) of the filtration dust collector (10) in the same order and manner as the above steps;
The remaining dust collection chamber (12) of the filter dust collector (10) is sequentially repeated in the same manner as in the previous step to dedust (S700),
A predetermined time period (T0) after the dust collection chamber (12) corresponding to the last dust removal order of the filtration dust collector (10) has been completed and the dust collection cycle of the filtration dust collector (10) is completed. Or a step (S800) in which the pressure loss of the filter dust collector (10) reaches a predetermined value and the dedusting cycle of the filter dust collector (10) is repeated again (S800). Filtration dust collector dedusting method.

A number of dust collecting chambers (12) in which dust collecting filters (11) are installed;
A gas inflow line (20) for supplying the dust-containing gas (A) into the plurality of dust collecting chambers (12);
A gas discharge line (40) connected to the processing gas discharge branch pipe (41) of each dust collection chamber (12) and for discharging the cleaning process gas (B) filtered by the dust collection filter (11). When,
An exhaust gas flow rate control device (50) that is installed in each of the processing gas discharge branch pipes (41) and controls the flow rate of gas discharged from each dust collection chamber (12);
First and second main differential pressure sensors installed in the gas inflow line (20) and the gas exhaust line (40), respectively, for measuring the pressure difference before and after passing through the multiple dust collection chambers (12). 60, 61),
A dust removal mechanism (80) installed in each dust collection chamber (12) to dedust the dust collected by the dust collection filter (11);
A dust removal mechanism controller (90) designed to control the operation of the dust removal mechanism (80) of each dust collection chamber (12);
A number of dust collection cycle periods (T0) of the plurality of dust collection chambers (12) and predetermined times (T1, T2, T3, T4) corresponding to the respective dust removal stages (S100, S200, S300, S400, S500); Controlling the order, the open / close rate and open / close time interval of the inflow gas flow rate control device (30) and the exhaust gas flow rate control device (50), the dedusting order and dedusting time interval between the multiple dust collection chambers (12), It communicates with the first and second main differential pressure sensors (60, 61) and communicates with the dust removal mechanism controller (90) to control the entire dust removal process of the multiple dust collection chambers (12). An interlocking controller (100) designed for
A large-capacity filtration dust collector (10) comprising a large number of dust collection chambers (12), and the large number of dust collection chambers at a predetermined time period (T0) or when the pressure loss value of the filtration dust collector (10) reaches a predetermined value. In the large-capacity filtration dust collector dedusting method in which all the chambers (12) are sequentially dedusted,
The dust collection target dust collection chamber (12) is opened by the exhaust gas flow rate control device (50) so that the first dust collection target dust collection chamber (12) is 5 to 20% of the normal flow rate when the first dust collection target dust collection chamber (12) is opened 100%. And waiting for a predetermined time (T1) immediately before the start of dust removal (S100),
Dedusting dust collected by the dust collection filter (11) of the dust collection chamber (12) (S200);
Dust that has been dedusted is prevented from flowing again into the dust collection filter (11), and is discharged to the outside through the hopper (13) at the lower end of the dust collection chamber (12) and the dust discharge device (14) by sedimentation. As described above, maintaining the dust collection chamber (12) in the open state of the step S100 and allowing a predetermined time (T2) to elapse (S300);
A step (S500) of operating for a predetermined time (T4) in a normal flow rate state in which the dust collection target dust collection chamber (12) is 100% open;
A step (S600) of dedusting the second dust collection target dust collection chamber (12) of the filtration dust collector (10) in the same order and manner as the above steps;
The remaining dust collection chamber (12) of the filter dust collector (10) is sequentially repeated in the same manner as in the previous step to dedust (S700),
A predetermined time period (T0) after the dust collection chamber (12) corresponding to the last dust removal order of the filtration dust collector (10) has been completed and the dust collection cycle of the filtration dust collector (10) is completed. Or a step (S800) in which the pressure loss of the filter dust collector (10) reaches a predetermined value and the dedusting cycle of the filter dust collector (10) is repeated again (S800). Filtration dust collector dedusting method.

In the step S200, a large number of dust collection filters (11) are formed in the dust collection target dust collection chamber (12),
The dust collection filter (11) performs a dust removal operation by a type of the dust removal mechanism (80) installed in the clean part (16) of the dust collection target dust collection chamber (12) and the dust removal mechanism (80). The dust removal method according to claim 1 or 2, wherein the dust is removed through a dust removal mechanism controller (90) that can be controlled.

The gas inflow line (20)
A plurality of processing gas inflow branch pipes (21) are formed at the outer peripheral edge of one end and are connected to each dust collecting chamber (12).
Each of the process gas inflow branch pipes (21) is provided with an inflow gas flow rate control device (30) for controlling the flow rate of the dust-containing gas (A) flowing into each dust collection chamber (12). The large-capacity filtration dust collector dedusting method according to claim 1 or 2 .

Each of the dust collection chambers (12)
A first load differential pressure sensor (70) is installed in the process gas inflow branch pipe (21), and a second load differential pressure sensor (71) is installed in the process gas discharge branch pipe (41). The large-capacity filtration dust collector dedusting method according to claim 1 or 2 , wherein the pressure difference before and after passing through the dust collection filter (11) of the chamber (12) is measured.

The dust removal mechanism (80)
By using an impact airflow dust removing device that injects high-pressure compressed air into the dust collection filter (11) at a high speed and a pressure blower, the flow rate is passed in a direction opposite to the filtration direction of the dust collection filter (11) for a predetermined time. reverse airflow cleaning dedusting apparatus for dedusted dust,
A vibration dedusting device for dedusting by vibrating by an external force to the dust collecting filter (11),
The large-capacity filtration according to claim 1 or 2 , wherein one of a sonic dust removing device and a sonic dust removing device for dedusting the dust collecting filter (11) by vibration by sound waves using a sound wave generator is used. Dust collector dedusting method .

The plurality of dust collecting chambers (12)
A hopper (13) into which dust-containing gas (A) is introduced, and a filter part (15) in which the dust collection filter (11) is installed and extended vertically upward at the upper end of the hopper (13); filter unit (15) communicates with a cleaning unit cleaning treatment gas dust was filtered through filter unit (15) which (B) is moved (16), in the compartment,
The large-capacity filtration dust collector dedusting method according to claim 1 or 2 , wherein the filter section (15) is composed of a number of dust collection filters (11).

The plurality of dust collecting chambers (12)
The large-capacity filtration dust collector dedusting method according to claim 1 or 2 , wherein the filter parts (15) are open to each other or partitioned by a separation plate (18).