TWI226259B - Process and module for treating a gaseous exhaust containing volatile organic compounds by cyclic adsorption and desorption - Google Patents

Process and module for treating a gaseous exhaust containing volatile organic compounds by cyclic adsorption and desorption Download PDF

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Publication number
TWI226259B
TWI226259B TW091135883A TW91135883A TWI226259B TW I226259 B TWI226259 B TW I226259B TW 091135883 A TW091135883 A TW 091135883A TW 91135883 A TW91135883 A TW 91135883A TW I226259 B TWI226259 B TW I226259B
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desorption
exhaust gas
activated carbon
adsorbent
item
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TW091135883A
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Chinese (zh)
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TW200409667A (en
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Jia-Yuan Chen
Ying-Hsi Chang
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Ind Tech Res Inst
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Treating Waste Gases (AREA)

Abstract

The present invention discloses a module for treating a gaseous exhaust containing volatile organic compounds (VOCs) including an adsorption device and a moving-bed desorption device, which are integrally formed into a module. The adsorption device contains a bag filter and a fluidized adsorbent bed. The module of the present invention has a wide range of operational space velocity, an enhanced capability of VOCs adsorption, and a less complicated pipelining, and thus a reduced operational cost and an easier maintenance. The present invention also discloses a process for treating a gaseous exhaust containing volatile organic compounds (VOCs) by using the module of the present invention.

Description

1226259 玖、發明說明 (發明說明應敘明:發明所屬之技術領域、先前技術、內 容、實施方式及圖式簡單說明) 【發明所屬之技術領域】 本創作為一種可循環操作活性碳吸附揮發性有機物及 吸附劑再生之廢氣處理方法及模組,尤指結合袋式集塵機 與流化床動作的吸附裝置,及流動床式的脫附裝置,且吸 附裝置及脫附裝置結合為一模組。 【先前技術】 揮發性有機物(VOCs)是工廠製造程序中最常排放的氣 狀污染物,不但造成作業環境空氣品質惡化,且影響周圍 環境,若再經光化反應則產生更具危害性之二次污染,其 所造成直接或潛在致癌及各種危害到人體健康的可能性與 處理技術,已引起廣泛的重視及探討。 在處理含揮發性有機物廢氣的方法中,活性碳吸附是一 種被廣爲採用來處理低濃度VOCs廢氣的方法。然而,習 知的活性碳吸附脫附方法,或因操作氣速固定,或因活性 碳與廢氣無法完全混合,或因操作時需時時補充新的活性 碳,限制其方法的適用性及增加操作成本。習知的活性碳 吸附脫附揮發性有機物廢氣之裝置,或因吸附及脫附作業 設備分立,或因管路設備密集,除增加其裝置的安裝成本 及設備空間外,也不利於保養維護工作的進行。 1226259 【發明內容】 針對上述先前技藝方法及設備的困難,本創作首要目的 在建立一種不具有先前技藝缺點之通過吸附脫附循環操作 的揮發性有機物廢氣之處理方法。 本創作次要目的在建立一種不具有先前技藝缺點之通 過吸附脫附循環操作的揮發性有機物廢氣之處理模組。 爲達成上述發明目的,本發明建立一種結合流化床、袋 式集塵機及流動床的可循環操作吸附脫附的揮發性有機物 廢氣處理技術,其中活性碳吸附劑在流化床中可與廢氣充 分混合,再經袋式集塵機濾袋表面沾附形成二次吸附層; 吸附飽和之活性碳則由流動床之脫附槽脫附再生,循環使 用,如此具有操作氣速範圍擴大,也節省了操作成本。本 發明將吸附脫附裝置模組化,可因應作業空間大小而調 整,也大幅減少管路設備,使保養維護工作容易進行。本 發明的提出可大大助益揮發性有機物廢氣的處理作業。 【實施方式】 本發明的較佳實施方式包括下列z 1 · 一種結合流化床、袋式集塵機及流動床循環操作吸附脫 附揮發性有機物(VOCs)廢氣之方法,包括:將含揮發性 有機物之廢氣導入置於一袋式集塵機底部的活性碳顆粒 吸附劑床,使該活性碳顆粒流化及對廢氣進行第一道 VOCs吸附,其中流化後部分活性碳顆粒及流化過程摩擦 產生之活性碳粉粒,沾粘於該袋式集塵機頂部的濾袋的表 1226259 面形成第二道VOCs吸附之活性碳層;使通過該第一道 VOCs吸附的廢氣繼續通過該活性碳層而完成第二道 VOCs吸附;其中當該濾袋內外壓差達一預定値時,將空 氣打入該濾袋內而打落濾袋表面之吸附有VOCs的活性 碳層,並以一設於該袋式集塵機內部及濾袋下方的料斗收 集該打落的活性碳並將其導入一脫附槽對其進行脫附,然 後利用一輸送手段,將脫附再生的活性碳顆粒,再循環送 入該袋式集塵機中的活性碳顆粒吸附劑床作爲補充。 2·如本發明的較佳實施方式第1項之方法,其中在與被導 入的含揮發性有機物之廢氣不接觸的情形下將該料斗中 所收集到的活性碳導入該脫附槽。 3·如本發明的較佳實施方式第1或2項之方法,其中該脫 附槽中的脫附是採流動床熱蒸汽式脫附對活性碳進行脫 附。 4.如本發明的較佳實施方式第1項或第2項之方法,其 中,該含VOCs廢氣係藉由高速空氣輸送被導入該袋式集 塵機,或由該袋式集塵機的出口誘引風車而被抽氣導入該 袋式集塵機。 5·如本發明的較佳實施方式第4項之方法,其中,該含 VOCs廢氣經導入後通過一氣體分佈板,俾利於該活性碳 顆粒流體化形成流化床。 6·如本發明的較佳實施方式第3項之方法,其中該脫附用 熱蒸汽是由與該含VOCs廢氣進行熱交換而回收廢熱產 生,或由外部加熱器產生。 1226259 7·如本發明的較佳實施方式第2項之方法,其中該料斗的 底部穿過該活性碳顆粒吸附劑床,並且與該脫附槽以一氣 密排料閥隔開,俾使脫附後含V Ο C s之熱蒸汽不會進入該 活性碳顆粒吸附劑床爲活性碳再吸附。 8 ·如本發明的較佳實施方式第1項之方法,其中係利用_ 縮脈衝空氣打落濾袋表面之吸附有VOCs的活性碳層,同 時該廢氣係持續被導入該袋式集塵機內。 9 ·如本發明的較佳實施方式第1項之方法,其中由脫附槽 熱蒸汽脫附再生之活性碳顆粒,係以一輸送手段送回至一 活性碳料槽,再送入袋式集塵機中連續操作。 10· 如本發明的較佳實施方式第1項之方法,其中,該 活性碳顆粒吸附劑床的連續吸附脫附操作之活性碳顆 粒,係由該袋式集塵機的出口端之VOCs濃度檢知器,控 制其更換時機。 11. 一種通過吸附脫附循環操作的揮發性有機物(VOCs) 廢氣之處理模組,包含: 一吸附裝置,係用於將廢氣中VOCs吸附;及一脫附裝 置,係用於將吸附劑脫附再生; 該吸附裝置包含:一廢氣進氣室,供廢氣饋入,其頂部 具有一氣體分佈板;一袋式集塵機,其底部連接於該廢 氣進氣室之氣體分佈板上,而頂部具有多個濾袋,且於 該氣體分佈板上進一步具有顆粒狀吸附劑床,於是被饋 入該廢氣進氣室的廢氣僅能由該氣體分佈板均勻通過該 顆粒狀吸附劑床並穿過該多個濾袋流出,其中該顆粒狀 1226259 吸附劑床爲通過該氣體分佈板的廢氣所流化而形成用於 第一道吸附的一流化床,且流化所產生的吸附劑顆粒與 粉粒沾於該多個濾袋的表面形成一用於第二道吸附的吸 附劑層;及一轉動料斗,供收集從該多個濾袋表面被打 落之飽和吸附劑並用於在與被饋入該廢氣進氣室的廢氣 不接觸的情形下將該料斗中所收集到的吸附劑送入該脫 附裝置;以及 該脫附裝置包含一脫附槽,連接於該廢氣進氣室之下; 一脫附氣分佈管,供外部饋入之脫附氣均勻分佈於上述 脫附槽,俾利於吸附劑脫附再生;及一吸附劑緩衝料筒, 供該脫附槽所脫附再生之吸附劑儲存,其適於連接一輸 送手段將脫附再生之吸附劑送回至該顆粒狀吸附劑床。 12· 如本發明的較佳實施方式第1 1項所述的處理模組, 其中該吸附劑爲活性碳,及該脫附氣爲熱蒸汽。 13· 如本發明的較佳實施方式第1 1項所述的處理模組, 其中該吸附裝置進一步包含一活性碳料槽,用於儲存從該 吸附劑緩衝料筒送來之再生吸附劑。 14· 如本發明的較佳實施方式第1 1項所述的處理模組, 其中被饋入該廢氣進氣室的含VOCs廢氣係藉由高速空 氣輸送,或由該袋式集塵機的出口誘引風車抽氣而達成。 15· 如本發明的較佳實施方式第1 1項所述的處理模組, 其中,該氣體分佈板上均勻佈滿穿孔,供廢氣通過造成均 勻氣流。 16· 如本發明的較佳實施方式第1 1項所述的處理模組, 10 1226259 其中該袋式集塵機設有一壓差計,用以檢知廢氣通過該濾 袋之前後的壓力差値,於是當該壓力差値達一設定値時, 一壓縮空氣機構被啓動產生脈衝噴氣,將該濾袋表面飽和 吸附劑層打落。 17· 如本發明的較佳實施方式第1 6項所述的處理模組, 其中該壓差計係觸發一脈衝噴氣控制閥,啓動一壓縮空氣 機構產生脈衝噴氣,將濾袋表面飽和吸附劑層打落。 18. 如本發明的較佳實施方式第1 1項所述的處理模組, 其中該袋式集塵機設有一 VOCs濃度檢知器,用以檢知該 該袋式集塵機出口排氣之VOCs濃度,當其達一設定値 時,啓動一真空抽吸機構淸除及更換該顆粒狀吸附劑床的 顆粒狀吸附劑。 19. 如本發明的較佳實施方式第1 1項所述的處理模組, 其中該脫附槽係利用氣密隔板及一上氣密排料閥,分別與 廢氣進氣室底部及轉動料斗底部連接。 20. 如本發明的較佳實施方式第1 3項所述的處理模組, 其中該吸附劑料槽底部設有一下氣密排料閥,可控制該排 料閥的一變頻器以調整吸附劑進料速率。 2 1. 如本發明的較佳實施方式第1 9項所述的處理模組, 其中,該轉動料斗復包含有:一佈料桿,供撥動上述氣體 分佈板上之吸附劑床;二軸承,分別固定於上述廢氣進氣 室的氣體分佈板及該氣密隔板的中心,供轉動料斗支撐; 以及數個驅動葉片,供廢氣饋入時承受推力而驅動料斗轉 動。 1226259 2 2 . 如本發明的較佳實施方式第1 1項或第1 9項所述的 處理模組,其中該脫附槽底部出口還設有一下氣密排料 閥,藉由控制該脫附槽的下氣密排料閥的變頻器,可調整 其中再生吸附劑排料速度,形成流動床。 2 3· 如本發明的較佳實施方式第2 2項所述的處理模組, 其中該脫附槽設有一料位計檢知槽內吸附劑高度,以用於 控制該脫附槽的上下氣密排料閥排料速度。 24. 如本發明的較佳實施方式第1 1項所述處理模組,其 中,該脫附氣分佈管係由鋼管周圍鑽孔連結而成,水平固 定於上述脫附槽中,以利於飽和吸附劑由上而下垂直通過 該脫附氣分佈管。 25. 如本發明的較佳實施方式第1 1項所述的處理模組, 其中該吸附劑緩衝料筒,供脫附再生之吸附劑冷卻至室 溫,再利用一輸送手段送回至上述吸附劑料槽。 26· 如本發明的較佳實施方式第11項或第25項所述的 處理模組,其中該輸送手段係爲氣送方式。 茲參照附圖,對本創作之一較佳實施例作較詳細之說 明。 如圖1所示,此一通過吸附脫附循環操作的揮發性有機 物廢氣的處理模組包含一吸附裝置A及一脫附裝置D,兩 者連接成一模組。 吸附裝置A由一廢氣進氣室40、一流化床活性碳吸附 槽112、一袋式集塵機1〇〇、一轉動料斗41及一活性碳料 槽114所組成。廢氣進氣室40頂部以氣體分佈板31 (圖 12 1226259 3 )與流化床活性碳吸附槽1 1 2相接。袋式集塵機1 〇 〇包括 濾袋1 1 5、壓縮空氣槽1 1 7、脈衝噴氣控制閥丨丨8、壓差計 1 1 6及V O C s濃度檢知器1 1 9。轉動料斗4 1外部設有佈料 桿43、軸承44、驅動葉片42及軸承45 (圖4),該轉動料 斗41貫穿廢氣進氣室40及袋式集塵機1〇〇中心,以軸承 44與氣體分佈板31相接,以軸承45與廢氣進氣室40底 部氣密隔板1 9相接。活性碳料槽1 1 4底部設有氣密排料閥 113° 脫附裝置D由一活性碳脫附槽1 5、一熱蒸汽分佈管2 i 及一活性碳緩衝料筒1 1所組成。活性碳脫附槽1 5以氣密 隔板1 9、氣密排料閥丨7分別與廢氣進氣室40底部及轉動 料斗4 1底部相接,其進一步包括熱蒸汽出口丨8、料位計 16及底部氣密排料閥13。熱蒸汽分佈管21由數隻表面鑽 有蒸汽噴孔22之鋼管均勻分佈連接而成,水平架設於活性 碳脫附槽15內,與熱蒸汽入口 14相接(圖2)。 茲參考圖1,說明依本創作循環操作吸附脫附揮發性有 機物廢氣的處理流程。含揮發性有機物廢氣先於一熱交換 器51與水氣進行熱交換而降溫後再由廢氣入口 110饋入廢 氣進氣室40,先衝擊驅動葉片42後往上穿過氣體分佈板 3 1上的氣孔3 2,形成均勻氣流通過堆積於氣體分佈板3 1 上的活性碳細顆粒,造成流化床,使廢氣與活性碳充分混 合而完成第一道吸附。在活性碳流化的同時,其顆粒間的 摩擦力變小,轉動料斗41以軸承44及軸承45爲支點,並 以驅動葉片42受饋入廢氣衝擊之推力爲動力,帶動佈料桿 13 1226259 4 3轉動,撥動底層之活性碳,可使活性碳均勻流化。 在活性碳流化的過程,活性碳顆粒會持續上昇沾附於濾 袋1 1 5表面形成活性碳層,對經由活性碳流化床混合吸附 後的廢氣,進行第二道吸附,經過吸附處理的廢氣去除所 含的揮發性有機物,穿過濾袋由袋式集塵機出口排出,並 由VOCs濃度檢知器119進行排氣濃度檢知偵測。在袋式 集塵機濾袋1 1 5表面活性碳層吸附飽和時,亦即壓差計1 1 6 檢知出通過濾袋1 1 5之前後廢氣的壓力差達設定壓力差値 時,觸發啓動一脈衝噴氣控制閥118,啓動一壓縮空氣槽 1 1 7產生脈衝噴氣,將濾袋1 1 5表面飽和活性碳層打落。 被打落之飽和活性碳,經由轉動料斗4 1收集引導,通 過氣密排料閥1 7進入活性碳脫附槽1 5,進行脫附再生。 脫附的程序是藉外部饋入水氣經該熱交換器5 1加熱形成 熱蒸汽,由熱蒸汽入口 14進到熱蒸汽分佈管21,再由管 表面蒸汽噴孔22,均勻噴散於熱蒸汽分佈管21所在的水 平面上,並藉控制氣密排料閥1 7及活性碳脫附槽1 5底部 氣密排料閥1 3之變頻器,調整飽和活性碳顆粒的下降速 度,形成流動床,令飽和活性碳顆粒垂直通過熱蒸汽分佈 管2 1,俾於熱蒸汽脫附飽和活性碳所吸附的VOCs,含 VOCs的熱蒸汽會經設於活性碳脫附槽15上方的熱蒸汽出 口 1 8引至外部,冷凝分離回收V O C s。活性碳脫附槽1 5 內並設一料位計1 6,檢知槽內活性碳高度,藉以控制控制 氣密排料閥1 7及氣密排料閥1 3之進排料速度。 脫附再生的活性碳,由活性碳脫附槽1 5底部氣密排料 14 1226259 閥1 3排出至活性碳緩衝料筒丨1中,自然冷卻至室溫,再 由氣送風車1 2輸送回活性碳料槽1 1 4貯存,活性碳料槽 1 1 4底部設有一氣密排料閥i i 3,可與上述氣密排料閥1 3 及氣密排料閥1 7連動,將脫附後再生的活性碳送入流化床 活性碳吸附槽1 1 2中循環操作使用。 當該袋式集塵機的一 VOCs濃度檢知器119檢知該出口 排氣之VOCs濃度達設定値時,啓動一真空抽吸機構(未示 於圖中)由活性碳淸理口 1 1 1淸除及更換該流化床活性碳 吸附槽1 1 2內的活性碳。 以上,係就本創作之一較佳實例加以描述,此一實施例 僅係用來說明而非限制本創作。在不脫離本創作之實質內 容之範疇內仍可作各種變形而加以實施,此等變形仍應屬 本創作之範圍。因此,本創作之範疇係由以下之申請專利 範圍所界定。 【圖式簡單說明】 圖1爲依本創作的一較佳實施例所完成的揮發性有機 物廢氣之處理模組的操作示意圖。 圖2爲圖1中本創作的模組所使用熱蒸汽分佈管的上視 示意圖。 圖3爲圖1中本創作的模組所使用氣體分佈板的上視不 意圖。 圖4爲圖1中本創作的模組所使用轉動料斗示意圖。 主要元件之圖號說明 15 1226259 A..吸附裝置 D..脫附裝置 1 1 ..活性碳緩衝料筒 1 5 ..活性ί I 3、1 7、1 1 3 ..氣密排料閥 19. 21.. 熱蒸汽分佈管 31..氣體分佈 40.. 廢氣進氣室 41..轉動料斗 43·.佈料桿 44、45·.軸承 100. II 2..流化床活性碳吸附槽 114.. I 1 5 ..濾袋 1 1 6 ..壓差計 1 1 7 . ·壓 II 8..脈衝噴氣控制閥 炭脫附槽 .氣密隔板 板 42..驅動葉片 .袋式集塵機 .活性碳料槽 :縮空氣槽1226259 发明 Description of the invention (The description of the invention should state: the technical field, prior art, content, embodiments, and drawings of the invention briefly) The exhaust gas treatment method and module for organic matter and adsorbent regeneration, especially the adsorption device combining the action of a bag dust collector and a fluidized bed, and the fluid bed type desorption device, and the adsorption device and the desorption device are combined into a module. [Previous technology] Volatile organic compounds (VOCs) are the most commonly emitted gaseous pollutants in the manufacturing process of the factory, which not only causes the air quality of the working environment to deteriorate, but also affects the surrounding environment. Secondary pollution, its direct or potential carcinogenicity, and the possibility and treatment of various human health risks have attracted widespread attention and discussion. Among the methods for treating volatile organic matter-containing exhaust gas, activated carbon adsorption is a method widely used to treat low-concentration VOCs exhaust gas. However, the conventional methods for adsorption and desorption of activated carbon, either because the gas velocity of the operation is fixed, or because the activated carbon cannot be completely mixed with the exhaust gas, or because new activated carbon needs to be replenished during the operation, the method's applicability and increase are limited. Operating costs. Conventional activated carbon adsorption and desorption devices for volatile organic matter exhaust gas, either because of separate adsorption and desorption operation equipment or because of intensive pipeline equipment, in addition to increasing the installation cost and equipment space of its equipment, it is also not conducive to maintenance Carry on. 1226259 [Summary of the Invention] In view of the difficulties of the above-mentioned prior art methods and equipment, the primary purpose of this creation is to establish a method for treating volatile organic waste gas through adsorption and desorption cycle operation without the disadvantages of the prior art. The secondary purpose of this creation is to establish a treatment module for volatile organic gas waste gas that does not have the shortcomings of the prior art through the adsorption-desorption cycle operation. In order to achieve the above-mentioned object of the invention, the present invention establishes a cyclic organic adsorption and desorption volatile organic gas waste gas treatment technology combining a fluidized bed, a bag type dust collector, and a fluidized bed, in which an activated carbon adsorbent can fully meet the exhaust gas in the fluidized bed. Mix and then adhere to the surface of the filter bag of the bag-type dust collector to form a secondary adsorption layer; the activated carbon that is saturated with adsorption is desorbed and regenerated by the desorption tank of the fluid bed, and reused, so that the operating gas velocity range is expanded and the operation is also saved. cost. The present invention modularizes the adsorption and desorption device, which can be adjusted according to the size of the working space, and also greatly reduces the pipeline equipment, so that maintenance work is easy to perform. The present invention can greatly benefit the treatment of volatile organic compound waste gas. [Embodiment] A preferred embodiment of the present invention includes the following: z1. A method for adsorbing and desorbing volatile organic compounds (VOCs) exhaust gas by combining a fluidized bed, a bag dust collector, and a fluidized bed cycle operation, including: The exhaust gas is introduced into an activated carbon particle adsorbent bed placed at the bottom of a bag type dust collector to fluidize the activated carbon particles and perform first VOCs adsorption on the exhaust gas. Among them, some of the activated carbon particles and friction generated during the fluidization process are caused by friction. Activated carbon powder particles adhere to the surface of the filter bag on the top of the bag-type dust collector on the surface 1226259 to form a second activated carbon layer adsorbed by VOCs; the exhaust gas adsorbed by the first VOCs continues to pass through the activated carbon layer to complete Two VOCs are adsorbed; when the pressure difference between the inside and outside of the filter bag reaches a predetermined threshold, air is blown into the filter bag and the activated carbon layer adsorbing VOCs on the surface of the filter bag is dropped. The hopper inside the dust collector and the hopper under the filter bag collects the dropped activated carbon and introduces it into a desorption tank to desorb it, and then uses a transportation means to desorb the regenerated activated carbon particles, Feeding into the baghouse cycle machine particulate adsorbent bed of activated carbon as a supplement. 2. The method according to item 1 of the preferred embodiment of the present invention, wherein the activated carbon collected in the hopper is introduced into the desorption tank without being in contact with the volatile organic compound-containing exhaust gas to be introduced. 3. The method according to item 1 or 2 of the preferred embodiment of the present invention, wherein the desorption in the desorption tank is a desorption of activated carbon using a fluidized bed hot steam desorption. 4. The method according to item 1 or item 2 of the preferred embodiment of the present invention, wherein the VOCs-containing exhaust gas is introduced into the bag dust collector by high-speed air transport, or the windmill is induced by the outlet of the bag dust collector. It is evacuated and introduced into the bag dust collector. 5. The method according to item 4 of the preferred embodiment of the present invention, wherein the VOCs-containing exhaust gas is passed through a gas distribution plate after introduction, which is beneficial to fluidize the activated carbon particles to form a fluidized bed. 6. The method according to item 3 of the preferred embodiment of the present invention, wherein the desorption hot steam is generated by recovering waste heat through heat exchange with the VOCs-containing exhaust gas, or is generated by an external heater. 1226259 7. The method according to item 2 of the preferred embodiment of the present invention, wherein the bottom of the hopper passes through the activated carbon particle adsorbent bed, and is separated from the desorption tank by an air-tight discharge valve, so as to desorb The attached hot steam containing V OCs will not enter the activated carbon particle adsorbent bed for active carbon re-adsorption. 8. The method according to item 1 of the preferred embodiment of the present invention, wherein the activated carbon layer adsorbed with VOCs on the surface of the filter bag is knocked down by pulsed air, and the exhaust gas is continuously introduced into the bag dust collector. 9. The method according to item 1 of the preferred embodiment of the present invention, wherein the activated carbon granules regenerated by hot steam desorption in a desorption tank are sent back to an activated carbon hopper by a conveying means, and then sent to a bag dust collector. Continuous operation. 10. The method according to item 1 of the preferred embodiment of the present invention, wherein the activated carbon particles in the continuous adsorption and desorption operation of the activated carbon particle adsorbent bed are detected by the VOCs concentration at the outlet end of the bag dust collector. Control the timing of replacement. 11. A module for treating volatile organic compounds (VOCs) exhaust gas through an adsorption-desorption cycle operation, comprising: an adsorption device for adsorbing VOCs in the exhaust gas; and a desorption device for desorbing the adsorbent Attached regeneration; the adsorption device includes: an exhaust gas inlet chamber for exhaust gas feed, the top of which has a gas distribution plate; a bag dust collector, the bottom of which is connected to the gas distribution plate of the exhaust gas inlet chamber, and the top has A plurality of filter bags, and a particulate adsorbent bed is further provided on the gas distribution plate, so the exhaust gas fed into the exhaust gas inlet chamber can only pass through the particulate adsorbent bed uniformly through the gas distribution plate and pass through the gas distribution plate A plurality of filter bags flow out, wherein the granular 1226259 adsorbent bed is fluidized by the exhaust gas of the gas distribution plate to form a first-class fluidized bed for the first adsorption, and the adsorbent particles and powder generated by the fluidization The particles adhere to the surfaces of the plurality of filter bags to form an adsorbent layer for second adsorption; and a rotating hopper for collecting saturated adsorbents that have been dropped from the surfaces of the plurality of filter bags and used for Into The adsorbent collected in the hopper is sent to the desorption device without contacting the exhaust gas of the exhaust gas inlet chamber; and the desorption device includes a desorption tank connected to the exhaust gas inlet chamber; Desorption gas distribution tube, for the externally fed desorption gas to be evenly distributed in the above-mentioned desorption tank, which is beneficial to the desorption regeneration of the adsorbent; and an adsorbent buffer cylinder for the adsorbent desorbed and regenerated by the desorption tank Storage, which is suitable for connecting a conveying means to return the desorbed regeneration adsorbent to the granular adsorbent bed. 12. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the adsorbent is activated carbon and the desorbed gas is hot steam. 13. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the adsorption device further comprises an activated carbon material tank for storing the regenerated adsorbent sent from the adsorbent buffer cylinder. 14. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the VOCs-containing exhaust gas fed into the exhaust gas inlet chamber is transported by high-speed air, or is induced by the outlet of the bag dust collector. The windmill exhausted and reached. 15. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the gas distribution plate is evenly covered with perforations for the exhaust gas to pass through to cause a uniform air flow. 16. · The processing module according to item 11 of the preferred embodiment of the present invention, 10 1226259, wherein the bag dust collector is provided with a differential pressure gauge for detecting the pressure difference between exhaust gas before and after passing through the filter bag, Therefore, when the pressure difference reaches a set value, a compressed air mechanism is started to generate a pulse jet, and the saturated adsorbent layer on the surface of the filter bag is dropped. 17. The processing module according to item 16 of the preferred embodiment of the present invention, wherein the differential pressure gauge triggers a pulse jet control valve, starts a compressed air mechanism to generate pulse jets, and saturates the surface of the filter bag with adsorbent The layers fell. 18. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the bag dust collector is provided with a VOCs concentration detector for detecting the concentration of VOCs at the exhaust of the bag dust collector, When it reaches a set threshold, a vacuum suction mechanism is activated to remove and replace the particulate adsorbent of the particulate adsorbent bed. 19. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the desorption tank uses an air-tight partition plate and an upper air-tight discharge valve, respectively, and rotates with the bottom of the exhaust gas inlet chamber and rotates. The bottom of the hopper is connected. 20. The processing module according to item 13 of the preferred embodiment of the present invention, wherein an air-tight discharge valve is provided at the bottom of the sorbent material tank, and a frequency converter of the discharge valve can be controlled to adjust the adsorption. Agent feed rate. 2 1. The processing module according to item 19 of the preferred embodiment of the present invention, wherein the rotating hopper further comprises: a distributing rod for activating the adsorbent bed on the gas distribution plate; Bearings are respectively fixed to the gas distribution plate of the exhaust gas inlet chamber and the center of the airtight partition plate to support the rotating hopper; and several driving blades are used for driving the hopper to rotate when the exhaust gas is fed with thrust. 1226259 2 2. The processing module according to item 11 or item 19 of the preferred embodiment of the present invention, wherein the outlet of the bottom of the desorption tank is further provided with an airtight discharge valve to control the desorption A frequency converter with a grooved lower air-tight discharge valve can adjust the discharge speed of the regenerated adsorbent to form a fluid bed. 2 3 · The processing module according to item 22 of the preferred embodiment of the present invention, wherein the desorption tank is provided with a level gauge to detect the height of the adsorbent in the tank, so as to control the upper and lower sides of the desorption tank. Air-tight discharge valve discharge speed. 24. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the desorption gas distribution pipe is formed by drilling and connecting around the steel pipe, and is horizontally fixed in the desorption groove to facilitate saturation. The adsorbent passes vertically through the desorption gas distribution tube from top to bottom. 25. The processing module according to item 11 of the preferred embodiment of the present invention, wherein the adsorbent buffer cylinder is used for desorbing and regenerating the adsorbent to cool to room temperature, and then returns to the above by a conveying means. Adsorbent trough. 26. The processing module according to item 11 or 25 of the preferred embodiment of the present invention, wherein the conveying means is an air delivery method. A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, this volatile organic compound waste gas treatment module through an adsorption desorption cycle operation includes an adsorption device A and a desorption device D, both of which are connected into a module. The adsorption device A is composed of an exhaust gas inlet chamber 40, a first-class activated-bed activated carbon adsorption tank 112, a bag-type dust collector 100, a rotating hopper 41, and an activated carbon tank 114. The top of the exhaust gas inlet chamber 40 is connected with a fluidized bed activated carbon adsorption tank 1 1 2 by a gas distribution plate 31 (Fig. 12 1226259 3). The bag-type dust collector 1 〇 〇 includes a filter bag 1 1 5, a compressed air tank 1 1 7, a pulse jet control valve 丨 丨 8, a differential pressure meter 1 1 6, and a V O C s concentration detector 1 1 9. The rotating hopper 41 is provided with a distribution rod 43, a bearing 44, a driving blade 42, and a bearing 45 (FIG. 4). The rotating hopper 41 penetrates the exhaust gas inlet chamber 40 and the center of the bag dust collector 100. The distribution plate 31 is connected, and the bearing 45 is connected to the airtight partition plate 19 at the bottom of the exhaust gas inlet chamber 40. The bottom of the activated carbon material tank 1 1 4 is provided with an air-tight discharge valve 113 °. The desorption device D is composed of an activated carbon desorption tank 15, a hot steam distribution pipe 2 i and an activated carbon buffer cylinder 11. The activated carbon desorption tank 15 is air-tight partition 19, air-tight discharge valve 丨 7 is connected to the bottom of the exhaust gas inlet chamber 40 and the bottom of the rotating hopper 41, respectively, which further includes a hot steam outlet 丨 8, the material level Meter 16 and bottom air-tight discharge valve 13. The hot steam distribution pipe 21 is formed by evenly distributing and connecting several steel pipes with steam injection holes 22 on the surface, and is horizontally installed in the activated carbon desorption tank 15 and connected to the hot steam inlet 14 (Fig. 2). Referring to FIG. 1, the processing flow for adsorbing and desorbing volatile organic waste gas according to this creative cycle operation will be described. The volatile organic compound-containing exhaust gas is cooled by heat exchange with water and gas before a heat exchanger 51, and then is fed into the exhaust gas inlet chamber 40 through the exhaust gas inlet 110. It first impacts the driving blade 42 and then passes through the gas distribution plate 31. The pores 3 2 form a uniform air flow through the activated carbon fine particles deposited on the gas distribution plate 3 1, resulting in a fluidized bed, and the exhaust gas and activated carbon are fully mixed to complete the first adsorption. While the activated carbon is fluidized, the friction between the particles becomes smaller. The rotating hopper 41 uses the bearings 44 and 45 as the fulcrum, and the driving blade 42 is driven by the thrust of the exhaust gas. This drives the distribution rod 13 1226259 4 3 Rotate and activate the activated carbon at the bottom to make the activated carbon evenly fluidized. In the process of activated carbon fluidization, activated carbon particles will continue to rise and adhere to the surface of the filter bag 1 1 5 to form an activated carbon layer. The exhaust gas mixed and adsorbed through the activated carbon fluidized bed will be subjected to a second adsorption and subjected to adsorption treatment. The volatile organic compounds contained in the exhaust gas are removed through a filter bag and discharged from the outlet of the bag dust collector, and the exhaust concentration detection is performed by the VOCs concentration detector 119. When the surface activated carbon layer of the bag filter 1 1 5 is saturated and adsorbed, that is, the differential pressure meter 1 1 6 detects that the pressure difference between the exhaust gas before and after passing through the filter bag 1 1 5 reaches the set pressure difference ,, a trigger is started. The pulse jet control valve 118 activates a compressed air tank 1 1 7 to generate pulse jets, and blows down the saturated activated carbon layer on the surface of the filter bag 1 15. The dropped saturated activated carbon is collected and guided through the rotating hopper 41, and then enters the activated carbon desorption tank 15 through the air-tight discharge valve 17 for desorption regeneration. The desorption process is to heat the steam by externally feeding water and gas through the heat exchanger 51 to form hot steam, enter the hot steam distribution pipe 21 from the hot steam inlet 14, and then spray the hot steam evenly through the steam spray holes 22 on the surface of the pipe. The horizontal plane where the distribution pipe 21 is located, and by controlling the inverter of the air-tight discharge valve 17 and the activated carbon desorption tank 15 at the bottom of the air-tight discharge valve 13 to adjust the descending speed of the saturated activated carbon particles to form a fluid bed Let the saturated activated carbon particles pass through the hot steam distribution pipe 21 vertically, and let the hot steam desorb the VOCs adsorbed by the saturated activated carbon. The hot steam containing VOCs will pass through the hot steam outlet 1 located above the activated carbon desorption tank 15 8 It is led to the outside, and VOC s is recovered by condensation and separation. A level gauge 16 is also installed in the activated carbon desorption tank 15 to detect the height of the activated carbon in the tank, so as to control and control the feeding speed of the air-tight discharge valve 17 and the air-tight discharge valve 13. The deactivated regenerated activated carbon is discharged from the activated carbon desorption tank 15 at the bottom of the air-tight 14 1226259 valve 1 3 to the activated carbon buffer cylinder 丨 1, naturally cooled to room temperature, and then transported by the air-supply windmill 12 Return to the activated carbon tank 1 1 4 for storage. An air-tight discharge valve ii 3 is provided at the bottom of the activated carbon tank 1 1 4 and can be connected to the air-tight discharge valve 1 3 and the air-tight discharge valve 17 to disconnect it. The regenerated activated carbon is sent to a fluidized bed activated carbon adsorption tank 1 12 for recycling operation. When a VOCs concentration detector 119 of the bag-type dust collector detects that the VOCs concentration of the exhaust gas at the outlet reaches a set value, a vacuum suction mechanism (not shown in the figure) is activated to activate the port from the activated carbon 1 1 1 淸Remove and replace the activated carbon in the fluidized bed activated carbon adsorption tank 1 12. The above is a description of a preferred example of this creation, and this embodiment is only used to illustrate rather than limit this creation. Various deformations can be implemented without departing from the essence of this creation, and these deformations should still fall within the scope of this creation. Therefore, the scope of this creation is defined by the scope of patent application below. [Brief description of the drawings] FIG. 1 is a schematic diagram of the operation of a volatile organic compound waste gas treatment module completed according to a preferred embodiment of the present invention. FIG. 2 is a schematic top view of a hot steam distribution pipe used in the module of the present invention shown in FIG. 1. FIG. 3 is a top view of a gas distribution plate used in the module of the present invention shown in FIG. 1. FIG. 4 is a schematic diagram of a rotating hopper used in the module created in FIG. 1. Description of drawing numbers of main components 15 1226259 A. Adsorption device D. Desorption device 1 1. Activated carbon buffer cylinder 1 5. Active I 3, 1 7, 1 1 3 .. Air-tight discharge valve 19. 21. Hot steam distribution pipe 31. Gas distribution 40. Exhaust gas inlet chamber 41. Rotating hopper 43. Distribution rod 44, 45. Bearing 100. II 2. Fluidized bed activated carbon adsorption Slot 114: I 1 5 .. Filter bag 1 1 6 .. Differential pressure gauge 1 1 7. · Pressure II 8. Pulse degassing control valve carbon desorption slot. Airtight partition plate 42. Drive blade. Bag Type dust collector. Activated carbon material trough: shrink air trough

Claims (1)

1226259 申請專利範匿 1 . 一種結合流化床、袋式集塵機及流動床循環操 附揮發性有機物(VOCs)廢氣之方法,包括:將, 有機物之廢氣導入置於一袋式集塵機底部的活ΰ 吸附劑床,使該活性碳顆粒流化及對廢氣進行_ VOCs吸附,其中流化後部分活性碳顆粒及流化 產生之活性碳粉粒,沾粘於該袋式集塵機頂部的 面形成第二道VOCs吸附之活性碳層;使通過該 VOCs吸附的廢氣繼續通過該活性碳層而完成第 VOCs吸附;其中當該濾袋內外壓差達一預定値 氣打入該濾袋內而打落濾袋表面之吸附有VOCs 碳層,並以一設於該袋式集塵機內部及濾袋下方 集該打落的活性碳並將其導入一脫附槽對其進 後利用一輸送手段,將脫附再生的活性碳顆粒, 入該袋式集塵機中的活性碳顆粒吸附劑床作爲_ 2 .如申請專利範圍第1項之方法,其中在與被導 發性有機物之廢氣不接觸的情形下將該料斗中戶/ 的活性碳導入該脫附槽。 3 .如申請專利範圍第1或2項之方法,其中該脫 脫附是採流動床熱蒸汽式脫附對活性碳進行脫防 4.如申請專利範圍第1項或第2項之方法,其中 VOCs廢氣係藉由高速空氣輸送被導入該袋式集 作吸附脫 Μ軍發性 ί碳顆粒 卜道 過程摩擦 濾袋的表 第一道 二道 時,將空 的活性 的料斗收 F脫附,然 再循環送 ,充。 入的含揮 f收集到 附槽中的 卜 ,該含 塵機,或 17 1226259 由該袋式集塵機的出口誘引風車而被抽氣導入該袋式集 塵機。 5 ·如申請專利範圍第4項之方法,其中,該含V O C S廢氣 經導入後通過一氣體分佈板,俾利於該活性碳顆粒流體化 形成流化床。 6 ·如申請專利範圍第3項之方法,其中該脫附用熱蒸汽是 由與該含VOCs廢氣進行熱交換而回收廢熱產生,或由外 部加熱器產生。 7 ·如申請專利範圍第2項之方法,其中該料斗的底部穿過 該活性碳顆粒吸附劑床,並且與該脫附槽以一氣密排料閥 隔開,俾使脫附後含VOCs之熱蒸汽不會進入該活性碳顆 粒吸附劑床爲活性碳再吸附。 8 .如申請專利範圍第1項之方法,其中係利用壓縮脈衝空 氣打落濾袋表面之吸附有VOCs的活性碳層,同時該廢氣 係持續被導入該袋式集塵機內。 9 .如申請專利範圍第1項之方法,其中由脫附槽熱蒸汽脫 附再生之活性碳顆粒,係以一輸送手段送回至一活性碳料 槽,再送入袋式集塵機中連續操作。 10. 如申請專利範圍第1項之方法,其中,該活性碳顆 粒吸附劑床的連續吸附脫附操作之活性碳顆粒,係由該袋 式集塵機的出口端之VOCs濃度檢知器’控制其更換時 機。 11· 一種通過吸附脫附循環操作的揮發性有機物(VOCs) 廢氣之處理模組,包含: 18 1226259 一吸附裝置,係用於將廢氣中v 0 C s吸附;及一脫附裝 置,係用於將吸附劑脫附再生; 該吸附裝置包含:一廢氣進氣室,供廢氣饋入,其頂部 具有一氣體分佈板;一袋式集塵機,其底部連接於該廢 氣進氣室之氣體分佈板上,而頂部具有多個濾袋,且於 該氣體分佈板上進一步具有顆粒狀吸附劑床,於是被饋 入該廢氣進氣室的廢氣僅能由該氣體分佈板均勻通過該 顆粒狀吸附劑床並穿過該多個濾袋流出,其中該顆粒狀 吸附劑床爲通過該氣體分佈板的廢氣所流化而形成用於 第一道吸附的一流化床,且流化所產生的吸附劑顆粒與 粉粒沾於該多個濾袋的表面形成一用於第二道吸附的吸 附劑層;及一轉動料斗,供收集從該多個濾袋表面被打 落之飽和吸附劑並用於在與被饋入該廢氣進氣室的廢氣 不接觸的情形下將該料斗中所收集到的吸附劑送入該脫 附裝置;以及 該脫附裝置包含一脫附槽,連接於該廢氣進氣室之下; 一脫附氣分佈管,供外部饋入之脫附氣均勻分佈於上述 脫附槽,俾利於吸附劑脫附再生;及一吸附劑緩衝料筒, 供該脫附槽所脫附再生之吸附劑儲存,其適於連接一輸 送手段將脫附再生之吸附劑送回至該顆粒狀吸附劑床。 12. 如申請專利範圍第1 1項所述的處理模組,其中該吸 附劑爲活性碳,及該脫附氣爲熱蒸汽。 13· 如申請專利範圍第1 1項所述的處理模組,其中該吸 附裝置進一步包含一活性碳料槽,用於儲存從該吸附劑緩 19 1226259 衝料筒送來之再生吸附劑。 14 · 如申請專利範圍第11項所述的處理模組,其中被饋 入該廢氣進氣室的含VOCs廢氣係藉由高速空氣輸送,或 由該袋式集塵機的出口誘引風車抽氣而達成。 1 5 · 如申請專利範圍第1 1項所述的處理模組,其中,該 氣體分佈板上均勻佈滿穿孔,供廢氣通過造成均勻氣流。 1 6 · 如申請專利範圍第11項所述的處理模組,其中該袋 式集塵機設有一壓差計,用以檢知廢氣通過該濾袋之前後 的壓力差値,於是當該壓力差値達一設定値時,一壓縮空 氣機構被啓動產生脈衝噴氣,將該濾袋表面飽和吸附劑層 打落。 1 7 · 如申請專利範圍第1 6項所述的處理模組,其中該壓 差計係觸發一脈衝噴氣控制閥,啓動一壓縮空氣機構產生 脈衝噴氣,將濾袋表面飽和吸附劑層打落。 1 8 · 如申請專利範圍第11項所述的處理模組,其中該袋 式集塵機設有一 VOCs濃度檢知器,用以檢知該該袋式集 塵機出口排氣之VOCs濃度,當其達一設定値時,啓動一 真空抽吸機構淸除及更換該顆粒狀吸附劑床的顆粒狀吸 附劑。 19· 如申請專利範圍第11項所述的處理模組,其中該脫 附槽係利用氣密隔板及一上氣密排料閥,分別與廢氣進氣 室底部及轉動料斗底部連接。 2〇 ·如申請專利範圍第1 3項所述的處理模組,其中該吸 附劑料槽底部設有一下氣密排料閥,可控制該排料閥的— 20 1226259 變頻器以調整吸附劑進料速率。 2 1·如申請專利範圍第1 9項所述的處理模組,其中,該 轉動料斗復包含有:一佈料桿,供撥動上述氣體分佈板上 之吸附劑床;二軸承,分別固定於上述廢氣進氣室的氣體 分佈板及該氣密隔板的中心,供轉動料斗支撐;以及數個 驅動葉片’供廢氣饋入時承受推力而驅動料斗轉動。 22 ·如申請專利範圍第1 1項或第i 9項所述的處理模 組,其中該脫附槽底部出口還設有一下氣密排料閥,藉由 控制該脫附槽的下氣密排料閥的變頻器,可調整其中再生 吸附劑排料速度,形成流動床。 23. 如申請專利範圍第22項所述的處理模組,其中該脫 附槽設有一料位計檢知槽內吸附劑高度,以用於控制該脫 附槽的上下氣密排料閥排料速度。 24 · 如申請專利範圍第1 1項所述處理模組,其中,該脫 附氣分佈管係由鋼管周圍鑽孔連結而成,水平固定於上述 脫附槽中,以利於飽和吸附劑由上而下垂直通過該脫附氣 分佈管。 2 5· 如申請專利範圍第1 1項所述的處理模組,其中該吸 附劑緩衝料筒,供脫附再生之吸附劑冷卻至室溫,再利用 一輸送手段送回至上述吸附劑料槽。 26. 如申請專利範圍第1 1項或第2 5項所述的處理模 組,其中該輸送手段係爲氣送方式。 211226259 Patent application 1. A method for combining fluidized bed, bag type dust collector and fluid bed to cyclically operate volatile organic compounds (VOCs) waste gas, including: introducing the organic material waste gas into the active dust at the bottom of a bag type dust collector The adsorbent bed fluidizes the activated carbon particles and adsorbs _ VOCs on the exhaust gas. Among them, some of the activated carbon particles and activated carbon powder particles after fluidization stick to the surface of the top of the bag dust collector to form a second The activated carbon layer adsorbed by the VOCs; the exhaust gas adsorbed by the VOCs continues to pass through the activated carbon layer to complete the first VOCs adsorption; wherein when the pressure difference between the inside and outside of the filter bag reaches a predetermined radon, the filter bag is knocked down and the filter is dropped A VOCs carbon layer is adsorbed on the surface of the bag, and the fallen activated carbon is collected inside the bag dust collector and under the filter bag and is introduced into a desorption tank. After it is fed in, it is desorbed by a transportation means. The regenerated activated carbon particles are put into the activated carbon particle adsorbent bed in the bag-type dust collector as _ 2. As in the method of the scope of patent application No. 1, in the case of no contact with the exhaust gas of the induced organic matter The activated carbon in the hopper is introduced into the desorption tank. 3. The method of claim 1 or 2 in the scope of patent application, wherein the desorption is a method of deactivating activated carbon by fluid bed hot steam desorption. 4. The method of claim 1 or 2 in the scope of patent application, Among them, VOCs exhaust gas is introduced into the bag type by high-speed air transport. The first and second lines of the friction filter bag are absorbed and desorbed during the desorption process. The empty active hopper is collected and desorbed. Then recirculate to send, charge. The incoming dust collected in the attached tank, the dust collector, or 17 1226259 is induced by the outlet of the bag dust collector to the windmill, and is sucked into the bag dust collector. 5. The method according to item 4 of the scope of patent application, wherein the VOCS-containing exhaust gas is introduced through a gas distribution plate to facilitate the fluidization of the activated carbon particles to form a fluidized bed. 6. The method of claim 3, wherein the hot steam for desorption is generated by recovering waste heat through heat exchange with the VOCs-containing exhaust gas, or by an external heater. 7. The method according to item 2 of the patent application range, wherein the bottom of the hopper passes through the activated carbon particle adsorbent bed and is separated from the desorption tank by an air-tight discharge valve, so that the VOCs containing Hot steam will not enter the activated carbon particle adsorbent bed for active carbon re-adsorption. 8. The method according to item 1 of the scope of patent application, wherein the compressed pulse air is used to drop the activated carbon layer adsorbed with VOCs on the surface of the filter bag, and the exhaust gas is continuously introduced into the bag dust collector. 9. The method according to item 1 of the scope of patent application, wherein the activated carbon granules desorbed and regenerated by the hot steam in the desorption tank are sent back to an activated carbon tank by a conveying means, and then sent to a bag type dust collector for continuous operation. 10. The method according to item 1 of the scope of patent application, wherein the activated carbon particles in the continuous adsorption and desorption operation of the activated carbon particle adsorbent bed are controlled by a VOCs concentration detector at the outlet end of the bag dust collector. Change the timing. 11. · A processing module for volatile organic compounds (VOCs) exhaust gas through an adsorption and desorption cycle operation, comprising: 18 1226259 an adsorption device for adsorbing v 0 C s in the exhaust gas; and a desorption device for The adsorption device is desorbed and regenerated. The adsorption device includes: an exhaust gas inlet chamber for exhaust gas feed, and a gas distribution plate on the top; a bag dust collector whose bottom is connected to the gas distribution plate of the exhaust gas inlet. There are multiple filter bags on the top, and a particulate adsorbent bed is further provided on the gas distribution plate, so the exhaust gas fed into the exhaust gas inlet chamber can only pass through the particulate adsorption agent uniformly through the gas distribution plate. The bed passes through the plurality of filter bags, and the granular adsorbent bed is fluidized by the exhaust gas of the gas distribution plate to form a first-class bed for the first adsorption, and the adsorption generated by the fluidization Adsorbent particles and powder particles adhere to the surfaces of the plurality of filter bags to form an adsorbent layer for second adsorption; and a rotating hopper for collecting saturated adsorbents that have been dropped from the surfaces of the plurality of filter bags and used for With The adsorbent collected in the hopper is sent to the desorption device without contacting the exhaust gas fed into the exhaust gas inlet chamber; and the desorption device includes a desorption tank connected to the exhaust gas inlet chamber Below; a desorption gas distribution pipe for the externally fed desorption gas to be evenly distributed in the above desorption tank, which is beneficial to the adsorption desorption regeneration; and an adsorbent buffer cylinder for desorption by the desorption tank The regenerated adsorbent storage is adapted to be connected to a conveyance means to return the desorbed regenerated adsorbent to the granular adsorbent bed. 12. The processing module according to item 11 of the scope of patent application, wherein the adsorbent is activated carbon and the desorption gas is hot steam. 13. The processing module according to item 11 in the scope of the patent application, wherein the adsorption device further comprises an activated carbon material tank for storing the regenerated adsorbent sent from the adsorbent buffer. 14 · The treatment module according to item 11 in the scope of the patent application, wherein the VOCs-containing exhaust gas fed into the exhaust gas inlet chamber is conveyed by high-speed air, or the windmill exhaust is induced by the outlet of the bag dust collector. . 1 5 · The processing module according to item 11 of the scope of patent application, wherein the gas distribution plate is evenly covered with perforations to allow the exhaust gas to pass through to cause a uniform air flow. 1 6 · The processing module according to item 11 of the scope of patent application, wherein the bag dust collector is provided with a pressure difference meter to detect the pressure difference between the exhaust gas before and after passing through the filter bag, so when the pressure difference 値When a set pressure is reached, a compressed air mechanism is activated to generate a pulsed air jet, and the saturated adsorbent layer on the surface of the filter bag is dropped. 1 7 · The processing module according to item 16 of the scope of patent application, wherein the differential pressure gauge triggers a pulse jet control valve, activates a compressed air mechanism to generate pulse jets, and drops the saturated adsorbent layer on the surface of the filter bag. . 1 8 · The processing module according to item 11 of the scope of the patent application, wherein the bag dust collector is provided with a VOCs concentration detector for detecting the concentration of VOCs at the outlet of the bag dust collector. When 値 is set, a vacuum suction mechanism is started to remove and replace the granular adsorbent of the granular adsorbent bed. 19. The processing module according to item 11 in the scope of the patent application, wherein the desorption tank is connected to the bottom of the exhaust gas inlet chamber and the bottom of the rotating hopper by using an airtight partition plate and an upper airtight discharge valve, respectively. 20. The processing module as described in item 13 of the scope of patent application, wherein the bottom of the sorbent material tank is provided with an air-tight discharge valve, which can control the -20 202626 frequency converter for adjusting the sorbent. Feed rate. 2 1. The processing module according to item 19 of the scope of patent application, wherein the rotating hopper further comprises: a distributing rod for activating the adsorbent bed on the gas distribution plate; and two bearings, respectively fixed The center of the gas distribution plate of the exhaust gas inlet chamber and the airtight partition is supported by the rotating hopper; and a plurality of driving blades are driven by the thrust when the exhaust gas is fed to rotate the hopper. 22 · The processing module according to item 11 or item i 9 of the scope of patent application, wherein the outlet of the bottom of the desorption tank is further provided with an air-tight discharge valve to control the lower air-tightness of the desorption tank. The frequency converter of the discharge valve can adjust the discharge speed of the regenerated adsorbent to form a fluid bed. 23. The processing module according to item 22 of the scope of patent application, wherein the desorption tank is provided with a level gauge to detect the height of the adsorbent in the tank, for controlling the upper and lower airtight discharge valve rows of the desorption tank. Material speed. 24. The processing module according to item 11 in the scope of the patent application, wherein the desorption gas distribution pipe is formed by drilling and connecting around a steel pipe, and is horizontally fixed in the desorption tank to facilitate saturation of the adsorbent from above. The bottom passes vertically through the desorption gas distribution tube. 25. The processing module according to item 11 of the scope of patent application, wherein the adsorbent buffer cylinder is used to cool the adsorbent for desorption regeneration to room temperature, and then returned to the adsorbent material by a conveying means. groove. 26. The processing module according to item 11 or item 25 of the scope of the patent application, wherein the conveying means is a gas delivery method. twenty one
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TWI619537B (en) * 2009-06-20 2018-04-01 哈利歐提斯亞洲私人有限公司 Filtering device

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CN103285841A (en) * 2012-02-27 2013-09-11 承源环境科技企业有限公司 Method and unit for treating volatile organic compound desorption waste liquid
CN116983791B (en) * 2023-09-18 2024-03-29 临沂瀚海环境咨询有限公司 High-efficient industry organic waste gas treatment device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI619537B (en) * 2009-06-20 2018-04-01 哈利歐提斯亞洲私人有限公司 Filtering device

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