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                      泊頭市鈺泰環保機械有限公司-布袋除塵器\脈沖除塵器及除塵器配件誠信制造商

                      服務熱線:0317-8356829
                      13731707067
                      技術文檔

                      透徹了解除塵器的概念和分類

                        除塵器經過多年的發展,除塵效率不斷增高,隨著精密儀表的配置,除塵器從O初的簡單應用,已具備全自動,精密的操作和控制,除塵環保技術得到了飛躍發展。
                      一、除塵器的概念
                         在O采暖通風與空氣調節術語標準(GN 50155—92)中,明確了若干除塵器的具體含意,摘抄如下。
                         ①除塵器,用于捕集、分離懸浮于空氣或氣體中粉塵粒子的設備,也稱收塵器。
                         ②沉降室,由于含塵氣流進入較大空間速度突然降低,使塵粒在自身重力作用下與氣體分離的一種重力除塵裝置。我們稱重力除塵器。
                         ③干式除塵器,不用水或其他液體捕集和分離空氣或氣體中粉塵粒子的除塵器。
                         ④慣性除塵器,借助各種形式的擋板,迫使氣流方向改變,利用塵粒的慣性使其和擋板發生碰撞而將塵粒分離和捕集的除塵器。
                         ⑤旋風除塵器,含塵氣流沿切線方向進入筒體做螺旋形旋轉運動,在離心力作用下將塵粒分離和捕集的除塵器。
                         ⑥多管(旋風)除塵器,由若干較小直徑的旋風分離器并聯組裝成一體的,具有共同的進出口和集塵斗的除塵器。
                         ⑦袋式除塵器,用纖維性濾袋捕集粉塵的除塵器,也稱布袋過濾器。
                         ⑧顆粒層除塵器,以石英砂、礫石等顆粒狀材料作過濾層的除塵器。
                         ⑨電除塵器,由電暈極和集塵極及其他構件組成,在高壓電場作用下,使含塵氣流中的粒子荷電并被吸引、捕集到集塵極上的除塵器。
                         ⑩濕式除塵器,借含塵氣體與液滴或液膜的接觸、撞擊等作用。使塵粒從氣流中分離出來的設備。
                         ⑾水膜除塵器,含塵氣體從筒體下部進風口沿切線方向進入后旋轉上升,使塵粒受到離心力作用被拋向筒體內壁,同時被沿筒體內壁向下流動的水膜所黏附捕集,并從下部錐體排出的除塵器
                         ⑿臥式旋風水膜除塵器,一種由臥式內外旋筒組成的,利用旋轉含塵氣流沖擊水面在外旋筒內側形成流動的水膜并產生大量水霧,使塵粒與水霧液滴碰撞、凝集,在離心力作用下被水膜捕集的濕式除塵器。
                         ⒀泡沫除塵器,含塵氣流以一定流速自下而上通過篩板上的泡沫層而獲得凈化的一種除塵設備。
                         ⒁沖激式除塵器,含塵氣流進入筒體后轉彎向下沖擊液面,部分組大的塵粒直接沉降在泥漿斗內,隨后含塵氣流高速通過S型通道,激起大量水花和液滴,使微細粉塵與水霧充分混合、接觸而被捕集的一種濕式除塵設備。
                         ⒂文氏管除塵器,一種由文氏管和液滴分離器組成的除塵器。含塵氣體高速通過喉管時使噴嘴噴出的液滴進一步霧化,與塵粒不斷撞擊。進而沖破塵粒周圍的氣膜,使細小粒子凝聚成粒徑較大的含塵液滴,進入分離器后被分離捕集,含塵氣體得到凈化,也稱文丘里洗滌器。
                         ⒃篩板塔,筒體內設有幾層篩板,氣體自下而上穿過篩板上的液層,通過氣體的鼓泡使有害物質被吸收的凈化設備。
                         ⒄填料塔,筒體內裝有環形、波紋形或其他形狀的填料,吸收劑自塔頂向下噴淋于填料上,氣體沿填料間隙上升,通過氣液接觸使有害物質被吸收的凈化設備。
                         ⒅空氣過濾器,借助濾料過濾來凈化含塵空氣的設備。
                         ⒆自動卷繞式過濾器,使用滾筒狀濾料并能自動卷繞清灰的空氣過濾器。
                         真空吸塵裝置,一種借助高真空度的吸塵嘴清掃積塵表面并進行凈化處理的裝置。
                         ⒇除塵,捕集、分離含氣流中的粉塵等固體粒子的技術。
                         21、機械除,E。借助通風機和除塵器等進行除塵的方式。
                         22、濕法除塵,水力除塵、蒸汽除塵和噴霧降塵等除塵方式的統稱。
                         23、水力除塵,利用噴水霧加濕物料,減少揚塵量并促進粉塵凝聚、沉降的除塵方式。
                         24、聯合除塵,機械除塵與水力除塵聯合作用的除塵方式。
                         25、除塵系統,一般情況下指由局部排風罩、風管、通風機和除塵器等組成的,用以捕集,輸送和凈化含塵空氣的機械排風系統。
                         泊頭市鈺泰環保機械有限公司已發展為華北地區O具規模實力的除塵器設備生產基地,以上介紹產品均有能力生產。
                      二、除塵器的分類
                        除塵器的不同分類方法可以分成許多類型,用于不同粉塵和不同條件。
                        (1)按除塵作用力原理情況分類 詳見表。

                      型式 除塵作用力 除塵設備種類 適用范圍 不同粒徑效率/%
                      粉塵粒徑
                      /um
                      粉塵濃度
                      /(g/m3)
                      溫度
                      /℃
                      陰力
                      /Pa
                      50um 5um 1um
                      干式 重力 重力除塵器 >15 >10 <400 200~1000 96 16 3
                      慣性力 慣性除塵器 >20 <100 <400 400~1200 95 20 5
                      離心力 旋風除塵器 >5 <100 <400 400~2000 94 27 8
                      靜電力 靜電除塵器 >0.05 <30 <400 200~300 >99 99 86
                      慣性力、擴散力與篩分 袋式除塵器 振打清灰
                      脈沖清灰
                      反吹清灰
                      >0.1 3~10 <300 800~2000 >99
                      100
                      100
                      >99
                      >99
                      >99
                      99
                      99
                      99
                        慣性力、擴散力與凝集力 自激式除塵器
                      噴淋除塵器
                      文氏管除塵器
                      100~0.05 <100
                      <10
                      <100
                      <400
                      <400
                      <800
                      800~1000
                      5000~10000
                      100
                      100
                      100
                      93
                      96
                      >99
                      40
                      75
                      93
                        靜電力 濕式電除塵器 >0.05 <100 <100 300~400 >98 98 98
                        (2)按捕集煙塵的干濕情況分類
                      除塵器的干濕類型
                      除塵類別 煙塵狀態 收塵設備
                      干式除塵 干塵 重力除塵器、慣性除塵器、干式電除塵器、袋式除塵器、旋風除塵器
                      濕式除塵 泥漿狀 水膜除塵器、泡沫除塵器、沖擊式除塵器、文氏管除塵器、濕式電除塵器
                        (3)按除塵效率分類
                      除塵器除塵效率類型
                      除塵類別 除塵效率/% 除塵器名稱
                      低效除塵 <60 慣性除塵器、重力除塵器、水浴除塵器
                      中效除塵 60~95 旋風除塵器、水膜除塵器、自激除塵器、噴淋除塵器
                      O除塵 >95 電除塵器、袋式除塵器、文氏管除塵器、空氣過濾器
                        (4)按工作狀態分類 按除塵器在除塵系統的工作狀態,除塵器還可以分為正壓除塵器和和負壓除塵器兩類。接工作溫度的高低分為常溫除塵器和高溫除塵器兩類。按除塵器大小還可以分為小型除塵器,中型除塵器、大型除塵器和超大型除塵器等。
                        (5)按除塵設備除塵機理與功能的不同,根據《環境保護設備分類與命名》(HJ/T 11—1996)的方法分,除塵器分為以下7種類型。
                        ①重力與慣性除塵裝置 包括:重力沉降室,擋板式除塵器。
                        ②旋風除塵裝置 包括:單筒旋風除塵器,多筒旋風除塵器。
                        ③濕式除塵裝置 包括:噴淋式除塵器,沖激式除塵器,水膜除塵器,泡沫除塵器,斜柵式除塵器,文氏管除塵器。
                        ④過濾層除塵器 包括:顆粒層除塵器,多孔材料除塵器,紙質過濾器,纖維填充過濾器。
                        ⑤袋式除塵裝置 包括:機械振動式除塵器,電振動式除塵器,分室反吹式除塵器,噴嘴反吹式除塵器,振動式除塵器,脈沖噴吹式除塵器。
                        ⑥靜電除塵裝置 包括:板式靜電除塵器,管式靜電除塵器,濕式靜電除塵器。
                        ⑦組合式除塵器 包括:為提高除塵效率,往往“在前級設粗顆粒除塵裝置,后級設細顆粒除塵裝置”的各類串聯組合式除塵裝置。
                        此外,隨著大氣污染控制法規的日趨嚴格,在煙氣除塵裝置中有時增加煙氣脫硫功能,派生出煙氣除塵脫硫裝置。

                        文章來源:http://www.www.ainixiansheng.com.cn

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