200424480 玖、發明說明 [發明所屬之技術領域] 本發明係關於用於處理例如都市廢棄物、垃圾衍生燃 料（RDF)、廢棄塑膠、廢棄纖維加強塑膠（廢棄FRP)、生物 廢棄物、汽車廢棄物及廢油等廢棄物用之氣化融燒系統。 特別本發明係有關一種氣體處理裝置及方法，用於處理經 由設置於流化床氣化爐之爐底之不可燃物排放管線洩漏出 之可燃性氣體，作為氣化融燒系統之第一階段。 [先前技術] 第1圖顯示習知流化床氣化爐u。如第i圖所示，流 化床氣化爐"具有設置於爐底lla之擴散器板。用於部分 機燒用之燃燒空氣B由爐底lla供給而於空氣擴散器板上 :开7成机化介質P之流化床。廢棄物A供應至流化床氣化 爐11，且落入流化床。廢棄物A接觸經加熱至45〇艽至 二之匕介質P及燃燒空氣B ’ i即刻經熱解而產生可蜗 氣體（含有可燃成分）、焦油及焦炭。 … 、-由熱解產生之氣體及氣態焦油伴隨有焦炭細粒，且 設置於流化床氣化爐u上部之排放導f m排放。經由 :解產生之具有大型粒子直徑之焦炭藉流化介質於流化床 主動端流移動以及部分燃燒而經粉碎，且連同氣體及焦 科由排放導管llb排放。廢棄物中所含之何燃物例如 ::紹、銅及碎屬連同來自爐底Ua之流化介質p 一起經 斜槽12排放，且輸送至不可燃物處理設施。 如第1圖所示，習知不可燃物處理設施具有不可燃物 315472 5 200424480 排放裝置2 1、振動篩趵、 妳由、、六仏广#儿 /升~态24及砂饋料閥25。已 、、工由/瓜化床氣化姨】彳危 之混合物通過斜‘ 12幹a非放之不可燃物與流化介質 曰12輪达至不可燃物排放裝置21，以及 進一步猎不可燃物排放罗 A 衣置21而輸送至振動篩23。振動 師23將该混合物分離 及有小型粒子直徑之产化：，粒子直…可燃物以 之机化"質。經分離之流化介質係於垂 直方向糟砂升降器24於3 泣# Λ * 4輪迗，以及經由砂饋料閥25而返回 w木乱化爐11。有大型尺寸例如鐵、鋁200424480 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to the treatment of, for example, municipal waste, garbage derived fuel (RDF), waste plastic, waste fiber reinforced plastic (waste FRP), biological waste, and automobile waste. Gasification and melting system for waste and other waste oil. In particular, the present invention relates to a gas processing device and method for processing combustible gas leaked through a non-combustible substance discharge line provided at the bottom of a fluidized-bed gasification furnace as a first stage of a gasification melting system . [Prior Art] Fig. 1 shows a conventional fluidized bed gasifier u. As shown in Fig. I, the fluidized-bed gasification furnace " has a diffuser plate provided on the furnace bottom 11a. Combustion air B for partial mechanical combustion is supplied from the furnace bottom 11a and is placed on the air diffuser plate: a fluidized bed of 70% of the mechanized medium P is opened. The waste A is supplied to the fluidized-bed gasification furnace 11 and falls into the fluidized-bed. The waste A is in contact with the dagger medium P heated to 45 ° F to 2 ° F and the combustion air B'i, which is immediately pyrolyzed to generate snail gas (containing combustible components), tar and coke. …,-Gases and gaseous tars produced by pyrolysis are accompanied by coke fines, and the emissions fm set in the upper part of the fluidized bed gasifier u are discharged. Via: The coke with large particle diameter generated by the solution is pulverized by the active end-flow movement and partial combustion of the fluidized medium in the fluidized bed, and is discharged together with the gas and coke through the discharge pipe 11b. Any combustible materials contained in the waste such as :: Shao, copper and broken metals are discharged through the chute 12 together with the fluidizing medium p from the furnace bottom Ua, and transferred to the incombustible material treatment facility. As shown in Figure 1, the conventional non-combustible material treatment facility has non-combustible materials 315472 5 200424480 discharge device 2 1. Shaker sieve, Youyou, Liuliguang # 儿 / 升 ~ State 24 and sand feed valve 25 . Already, work by / melonization bed gasification aunt] The dangerous mixture passed the oblique '12 dry non-combustible non-combustible and fluidized medium in 12 rounds to reach the non-combustible discharge device 21, and further hunt non-combustible The material is discharged to the vibrating screen 23 by the clothes A 21. The vibrator 23 separates the mixture and produces a small particle diameter: the particles are directly ... combustible and organic. The separated fluidized medium is placed in the vertical direction of the sand elevator 24 at 3 ## Λ * 4 wheels, and returned to the wood mess furnace 11 through the sand feed valve 25. Available in large sizes such as iron, aluminum
分離之不可燃物，由振動 V 動師23排放。例如金屬之有價值的 材料由排放出之不可燃物中 τ w收而其餘不可燃物則用於 填土掩埋。 通“化床c化爐11之自由板nc係維持於數十毫米 水柱之負壓之下。當流化介質p係於流化床流化時，於流 化床垂直方向產生壓力耗損，故爐底…之壓力變成正 壓。因此為了防止可燃氣體由系㈣漏出，實際上使用流 化介質與不可燃物之混合物來填補斜槽12及不可燃物排 放裝置21 ’因而提供材料密封效果。此外，如雙重擋板 (double damper)之機械密封裝置可額外設置於不可燃物排 放裝置21與振動筛23之間’來更可靠地防止可燃性氣體 的洩漏。 但貫際上極難以藉由斜槽丨丨及不可燃物排放裝置2丄 使用ML化；|貝及不可燃物混合物填補的此種材料密封來獲 付完全密封效果。特別由於材料密封部間的壓力差產生氣 流，因而造成可燃性氣體的洩漏。即使設置雙重擋板作為 315472 6 200424480 機械4封裝置，由於雙重擋板切換操作期間，介於雙重擋 板的上游邛與下游部間產生的差壓，仍然造成可燃性氣體 电爲此外’於南溫粒子操作條件下，於技術上難以藉雙 重擋板獲彳于完整密封效果。雙重擋板之密封效果會經由接 合等成可燃性氧體的洩漏，因而不完全。此種洩漏的可 Μ氣體含有微量有毒成分。❻⑧漏的可燃氣體至目前為止 係未I任何處理或只有使用粉塵去除處理後，釋放至大 乳。因此’於不可燃物處理設施周圍殘留的洩漏之可燃氣 體可能造成工作環境的顯著危害。 [發明内容] 於别述缺點而完成本發明。因此本發明之目的係提 供一種氣化融燒系統及方法，其可防止由流化床氣化爐爐 底經由不可燃物排放裝置排放之可燃氣體經釋放至大氣， 以及適當處理該可燃氣體。 根據本發明之第一態樣，提供一種氣化融燒系統，其 具有用於氣化廢棄物之流化床氣化爐，以及用於燃燒且熔 化由該流化床氣化爐所產生的產物之融燒爐。該氣化融燒 系統包括用於輸送來自流化床氣化爐之廢棄物中所含的不 可燃物連同流化介質之不可燃物排放裝置，以及於由大氣 抽取空氣以及由流化床氣化爐經由該不可燃物排放裝置洩 漏之可燃氣體，因而形成一種可燃氣體與空氣之混合氣體 之此合氣體抽取裝置。該氣化融燒系統也包括用於供給廢 棄物之燃燒空氣至該流化床氣化爐及融燒爐之燃燒空氣供 應裝置，以及用於供給來自混合氣體抽取裝置之混合氣體 315472 7 200424480 通過燃燒空軋供應裝置至該流化床氣化爐與融燒爐中之至 少一者之混合氣體輪送通道。 因此，該氣化融燒系統具有燃燒空氣供應裝置，用於 供給含有可燃氣體之混合氣體至流化床氣化爐及融燒爐中 之至少一者；以及混合氣體輸送通道，用於供給混合氣體 至忒燃燒空氣供應裝置。因此，釋放至大氣之可燃氣體量 可經最小化，且該可燃氣體可經適當處理。 根據本發明之第二態樣，提供一種氣化融燒系統，其 具有用於氣化廢棄物之流化床氣化爐，以及用於燃燒且溶 化由该流化床氣化爐所產生的產物之融燒爐。該氣化融燒 系統包括用於輸送來自流化床氣化爐之廢棄物中所含的不 可燃物連同流化介質之不可燃物排放裝置，以及用於由大 氣抽取空氣以及一種已經由流化床氣化爐經由該不可燃物 排放裝置洩漏之可燃氣體，因而形成一種可燃氣體與空氣 之混合氣體之混合氣體抽取裝置。該氣化融燒系統也包括 用於供給來自該混合氣體抽取裝置之混合氣體至該流化床 氣化爐與該融燒爐中之至少一者之混合氣體供應通道。 使用前述配置，含有可燃氣體之混合氣體會經導引入 流化床氣化爐與融燒爐中之至少一者。因此，釋放至大氣 之可燃氣體量可經最小化，且該可燃氣體可經適當處理。 氣化融燒系統具有集塵器用於由混合氣體中移除粉 塵。此種情況下，因粉塵可由混合氣體移除，故氣化融燒 系統可長期穩定操作。希望集塵器位在混合氣體抽取裝置 之上游。此種情況下，可避免有關粉塵於混合氣體抽取裝 8 315472 200424480 置例如於鼓風機中的困擾。 混合氣體抽取裝置可包含鼓風機。此種情況下，含有 可燃氣體之混合氣體可於氣化融燒系統中安全地處理。此 種配置適合用於欲處理之可燃氣體含有微量毒性成分的情 況。 根據本發明之第三態樣，提供一種氣化融燒方法。廢 棄物係於流化床氣化爐中氣化。於流化床氣化爐產生的產 物係於琺燒爐中燃燒與溶化。廢棄物所含之不可燃物連同 Μ化71貝由流化床氣化爐中排放。抽取由流化床氣化爐洩 漏之可燃氣體連同來自大氣之空氣，目而形成可燃氣體與 空氣之混合氣體。混合氣體連同廢棄物之燃燒空氣一起供 給至該流化床氣化爐與該融燒爐中之至少一者。 因此，已經過處理之含可燃氣體之混合氣體供給至流 化床氣化爐與融燒爐中之至少一者。因此，釋放至大氣之 可燃氣體量可經最小化，且該可燃氣體可經適當處理。此 種方法適合用於欲處理之可燃氣體含有微量毒性成分之情 況。 根據本發明之第四態樣，提供一種氣化融燒方法。廢 棄物係於流化床氣化爐中氣化。於流化床氣化爐產生的產 物係於融燒爐中燃燒與溶化。廢棄物所含之不可燃物連同 流化介質由流化床氣化爐中排放。抽取由流化床氣化爐洩 漏之可燃氣體連同來自大氣之空氣，因而形成可燃氣體與 空氣之混合氣體。混合氣體供給至該流化床氣化爐與該融 燒爐中之至少一者。 315472 9 200424480 如此，已經過處理之含可燃氣體之混合氣體供給至流 化床氣化爐與融燒爐中之至少一者。因此釋放至大氣之可 燃軋體量可經最小化，且該可燃氣體可經適當處理。此種 方法適合用於欲處理之可燃氣體含有微量毒性成分之情 粉塵可由混合氣體中移除。此種情況下，因粉塵可藉 集塵器等而由混合氣體中移除，故可避免有關粉塵於混合 亂體抽取裝置如鼓風機中的困擾，可長期穩定地執行氣化 融燒。 述及其它本發明之目的、特色及優點結合附圖由後 文也明將顯然自明，後文舉例說明本發明之較佳具體實施 [實施方式] 根據本發明之具體實施例之氣化融燒系統將參照第2 及3圖祝明如後。|圖中類似部分或對應部分標示以相同 之參考編號而將不再重複說明。 第2圖為顯示本發明之第一具體實施例之氣化融燒系 、、先之方塊圖。#第2圖所示，氣化融燒系統具有用於氣化 廢棄物A而製造可燃氣體、焦油及焦炭之流化床氣化爐 11;以及用於燃燒且炫化由流化床氣化爐η所產生的可辦 氣體及焦油之渴旋型融燒爐31。流化床氣化爐η上部設 :排放導管m，該排放導管係連結至融燒爐31。本具體 “:例中’融燒爐3 1具有一次燃燒艙3 u、二次燃燒艙3讣 人九’:垸鈿3 1 c。氣化融燒系統也具有不可燃物處理設 315472 10 200424480 施，包括不可燃物排放裝置21、振動筛23、砂升降 ◊饋达閥25及用於由A氣抽取空氣之^氣供給通道 :。處理之廢棄物A供給至流化床氣化爐u，且與維持 、C至750 C之流化床中熱解成為可燃氣體、 炭。經由熱解產生的大部分可燃氣體及焦油係連同、呈= 形式之焦炭-起由排放導管Ub排放，且經導 :燒21。例如鐵、紹、銅及碎屬之龐大的不可燃物連同 桃化"貝’-起由流化床氣化爐i 1底部i h排出，且姑^ 斜槽U輸送至不可燃物排放裝置21。藉不可燃物排㈣ 置21輸达至振動篩23之不可燃物與流化介質之混合物， 猎振動篩23而分離成具大型粒子直徑之不可燃物及且^ 型粒子直徑之流化介質。例如鐵及銘之有價值之材料藉回 收裝置而由具大型粒子直徑之不可燃物中分離與回收。其 餘不可燃物用來填土掩埋。具小型粒子直徑之流化介質萨 砂升降器24於垂直方向向上輸送，通過砂饋料閥μ二 回流化床氣化爐η。因此經分離之流化介質可經循環利用 為流化介質。 根據本具體實施例之氣化融燒系統中，流化床氣化爐 11之自由板1 lc通常係維持於約數十毫米水柱之負壓之 下。當流化介質於流化床氣化爐η中流化時，於流化床垂 直方向產生壓力耗損。因此操作流化床氣化爐U，使爐底 11a具有約^00毫米水柱之正壓。為了防止氣化爐之 可燃氣體由系統洩漏出，斜槽12及/或不可燃物排放裝置 使用流化介質與不可燃物之混合物填補，因而提供二料 315472 11 200424480 山封放果。但猎此種材 此盔可避务蚰1曰 …套獲侍完全密封效果，因 …、避免地，小1可燃氣體將洩漏至大氣。 由此觀點，氣化融燒系統具有 ； J1 ^ ^ ^ ^ ^ ^ 頁虱體處理裝置1用於處 理3有破1毒性成分之洩漏 处 ΛΑ咖Α 凡體與大量抽取自大翕 的工乳混合。特別是該氣體處 、、日人々遍A人 我置1處理混合氣體，該 …體包S由流化床氣化爐11爐底iu經由斜槽12及 不可燃物排放裝置21而排放之可燃氣體，及大量空氣。氣 化融燒系統也具㈣於導引由氣體處理裝i i處理之含有 可燃氣體之混合氣體之混合氣體輸送通道65。 氣體處理裝置i具有過滤袋⑽為由混合氣體去除粉 塵之集塵器，以及鼓風機13作為混合氣體抽取裝置用於抽 取來自不可燃物排放裝置2 1之可燃氣體以及來自大氣之 空氣。過濾袋1 b係設置於鼓風機1 a上游。為了防止由流 化床氣化爐11排放之可燃氣體洩漏出系統之外，如第2 圖所示管線6 1連結至不可燃物排放裝置2 1上部，以及管 線6 2連結至振動師2 3上游之斜槽。砂升降器2 4設置有抽 取埠口 24a於其上部，抽取埠口 24a係連結至管線63。管 線61、62及63係接合至管線64，管線64係連結至氣體 處理裝置1之過濾袋lb。使用此等管線，由流化床氣化爐 11排放之可燃氣體與空氣之混合氣體經導引入氣體處理 裝置1。 使用前述配置，可濃縮可燃氣體而不洩漏出系統之 外。可燃氣體之抽取點非僅限於所示範例’只要可避免可 燃氣體洩漏出系統之外，可燃氣體可由系統之任一點抽 12 315472 200424480 取。由於不可燃物排放裝置21附近有高濃度可燃氣體，故 需要於接近不可燃物排放裝置2 1以有效抽取可燃氣體。 空氣由大氣，經由空氣供應通道26及振動篩23而經 導引入管線62，來稀釋欲抽取之可燃氣體。如此，抽取出 之可燃氣體由大量空氣稀釋，俾維持混合氣體於爆炸極限 範圍内。稀釋後之可燃氣體及空氣之混合氣體供給至過濾 袋lb。藉過濾袋lb去除粉塵後，該混合氣體經導引入鼓 風機1 a。 欲供給管線62的空氣量較佳至少為洩漏出之可燃氣 體量之兩倍’更佳至少為洩漏出之可燃氣體量之5倍。當 欲供給之空氣量至少為洩漏出之可燃氣體量之兩倍時，實 質上能可靠地避免可燃氣體由系統洩漏出。若供給之空氣 里過少’則混合氣體溫度升高。因此可燃氣體溫度可能升 高超過爆炸極限，因點火源而引發造成可燃氣體爆炸。因 此需供給足量低溫空氣，來充分稀釋可燃氣體。當欲供給 之二氣畺至少為）¾漏之可燃氣體量之5倍時，可更進一步 可靠地避免可燃氣體的线漏。 藉鼓風機1 a抽取出之可燃氣體與大量空氣之混合氣 體分別經由混合氣體輸送通道（管路）65而供給第一抽取管 線51及第二抽取管線53。第一抽取管線51係連結至流化 鼓風機41(燃燒空氣供應裝置)用於供給空氣至流化床氣化 爐11。第一抽取官線53係連結至二次風扇(燃燒空氣供 應裝置），用於供給空氣至融燒Μ 3 1。流化鼓風機41及二 次風扇42由廢棄物凹坑抽取空氣。因此廢棄物凹坑中具有 13 315472 200424480 不怡人氣味之空氣可避免洩漏出系統之外。 混合氣體與來自廢棄物凹坑之空氣混合，然後經由第 一抽取管線51及第二抽取管線53而分別導引入流化床氣 化爐11及融燒爐31。因此由氣化爐u泡漏出之可燃氣體 係於流化床氣化爐U及融燒爐31中高溫燃燒。因此，即 使可燃氣體含有有機毒性成分，該有機毒性成分也可於流 化床氣化爐及融燒爐3 1完全氧化分解。 第2圖中，混合氣體輸送通道65係連結至流化鼓風機 4 1之第一抽取管線5丨，及二次風扇〇之第二抽取管線 53。但混合氣體輸送通道65也可連結至流化鼓風機ο之 第抽取官線5 1及二次風扇42之第二抽取管線53中之任 者。另外，混合氣體輸送通道65可繞過鼓風機4丨及風 扇42，可直接連結至流化床氣化爐丨丨及/或融燒爐3 1，而 將混合氣體直接供給流化床氣化爐UA/或融燒H。當 混合氣體供給融燒爐31時無論混合氣體係供給融燒爐^ 之一次燃燒艙31a、二次燃燒艙31b及三次燃燒艙3卜中 之任一者，預期皆可獲得同等效果。 第3圖為顯示根據本發明之第二具體實施例之氣化融 、=系、、充之方塊圖。如第3圖所示，氣化融燒系統具有雙重 擋板22作為位在不可燃物排放裝置21與振動篩23間之機 械在封裝置。管線62係連結至雙重擔板22下游及振動筛 上游之位置。可燃氣體及空氣經由管線62而經抽取至 過濾袋lb。此種情況下，無需由不可燃物排放裝置21抽 取。採用具有高度密封能力之雙重擋板22，來自不可燃物 315472 14 200424480 排放裝置21之抽取管線(於第2圖以管缘 地強迫由流化床氣化爐U抽取可燃氣體。其：::將逆向 3圖所示結構相同。 、匕〜構則與第 當設置機械密封裝置例如雙重擋板時，、 體之洩漏量。當處理有高度燃燒值之廢棄物時’：可燃氣 燃氣體有高濃度可燃成分。因此此種機械密封=的可 於處理具有高熱值之廢棄物之情況。也可採用有複=用 閥之二重擒板或㈣裝置替代雙錢板料機械密封襄問 如前文說明，根據本發明之具體實施例，氣化融燒系 統具有氣體處理裝置供處理混合氣體，該混合氣體含有由 流化床氣化爐經由不可燃物排放裝置洩漏出之可燃氣體以 及抽取自大氣之空氣。由氣體處理裝置之鼓風機所抽取之 此合氣體與欲供給流化床氣化爐之燃燒空氣混合，或與欲 供給融燒爐之燃燒空氣混合。另外，混合氣體經直接導引 入流化床氣化爐與融燒爐中之至少一者。因此洩漏之可燃 氣體可以適當方式有效處理。此外，因允許混合氣體通過 融燒爐之高溫燃燒區，故微量毒性成分可經氧化分解。 因此根據本發明，一種氣化融燒系統具有燃燒空氣供 應裝置’用於供給含有可燃氣體之混合氣體至流化床氣化 爐與融燒爐中之至少一者；以及具有用於供給該混合氣體 至燃燒空氣供應裝置之混合氣體輸送通道。因此，釋放至 大氣之可燃氣體量可最小化，且該可燃氣體經過適當處 理0 15 315472 200424480 雖然已經顯示及說明本發明之某若干較佳具體實施例 之細節’但須了解可在未悖離隨附之申請專利範圍之範圍 下而做出多項變化及修改。 (產業應用性） 本發明適合用於處理都市廢棄物、垃圾衍生燃料 (RDF)、廢棄塑膠、廢棄纖維加強塑膠（廢棄FRp)、生物廢 棄物、汽車廢棄物及廢油等廢棄物用之氣化融燒系統。 [圖式簡單說明] 第1圖為顯示具有不可燃物處理設施之習知流化床氣 化爐之方塊圖； 第2圖為顯示根據本發明 燒系統之方塊圖；以及 第3圖為顯示根據本發明 燒系統之方塊圖。 之第一具體實施例之氣化融 之弟一具體貫施例之氣化融 (元件符號說明） 1 氣體處理裝置 lb 過濾袋 11a 爐底 11c 自由板 21 不可燃物排玫装^ 22 雙重擋板 24 砂升降器 25 砂饋料閥 31 融燒爐 la 鼓風機 11 流化床氣化爐 lib 排放導管 12 斜槽 23 振動篩 24a 抽取埠口 26 空氣供應通道 31a 一次燃燒艙 315472 16 200424480 31b 二次燃燒艙 31c 三次燃燒艙 41 流化鼓風機 42 二次風扇 51 第一抽取管線 53 第二抽取管線 61 至 64 管線 65 混合氣體輸送通道 A 廢棄物 B 燃燒空氣 P 流化介質 17 315472The separated incombustibles are discharged by the vibration V activator 23. For example, valuable materials of metal are collected from the discharged incombustibles τ w and the remaining incombustibles are used for landfill landfill. The free plate nc of the chemical bed c chemical furnace 11 is maintained under a negative pressure of tens of millimeters of water column. When the fluidized medium p is fluidized in the fluidized bed, pressure loss occurs in the vertical direction of the fluidized bed, so The pressure at the bottom of the furnace becomes positive. Therefore, in order to prevent the combustible gas from leaking out of the system, a mixture of a fluidizing medium and a non-combustible substance is actually used to fill the chute 12 and the non-combustible substance discharge device 21 ′, thereby providing a material sealing effect. In addition, a mechanical seal device such as a double damper can be additionally provided between the incombustible substance discharge device 21 and the vibrating screen 23 to prevent the leakage of combustible gas more reliably. The chute 丨 丨 and the non-combustible material discharge device 2 use ML; | This kind of material seal filled with shell and non-combustible material mixture is used to obtain a complete sealing effect. Especially because the pressure difference between the material sealing parts generates airflow, resulting in Leakage of flammable gas. Even if a double baffle is provided as a 315472 6 200424480 mechanical 4-seal device, it is located between the upper part of the double baffle and the downstream part during the double baffle switching operation. In addition, under the operating conditions of Nanwen particles, it is technically difficult to obtain a complete sealing effect by using a double baffle. The sealing effect of the double baffle will become flammable by joining. The leakage of oxygen gas is incomplete. This leaked M gas contains traces of toxic components. So far, the leaked combustible gas has not been treated in any way or has been released to the big milk after using only dust removal treatment. Leaked combustible gas remaining around non-combustibles processing facilities may cause significant harm to the working environment. [Summary of the Invention] The present invention has been completed with other disadvantages. Therefore, the object of the present invention is to provide a gasification melting system and method, It is possible to prevent the combustible gas discharged from the bottom of the fluidized-bed gasification furnace via the incombustible substance discharge device from being released to the atmosphere, and to properly dispose of the combustible gas. According to a first aspect of the present invention, a gasification melting system is provided, It has a fluidized bed gasification furnace for gasifying waste, and a product for burning and melting the fluidized bed gasification furnace. Melting furnace. The gasification melting system includes a non-combustible material discharge device for conveying non-combustible materials contained in waste from a fluidized-bed gasification furnace together with a fluidized medium, extraction of air from the atmosphere, and The combustible gas leaked from the fluidized bed gasification furnace through the non-combustible substance discharge device, thus forming a combined gas extraction device of a mixed gas of combustible gas and air. The gasification melting system also includes combustion for supplying waste. Combustion air supply device for air to the fluidized bed gasification furnace and melting furnace, and for supplying mixed gas from the mixed gas extraction device 315472 7 200424480 to the fluidized bed gasification furnace and melting furnace through a combustion air rolling supply device. At least one of the mixed gas rotating channels in the furnace. Therefore, the gasification and melting system has a combustion air supply device for supplying a mixed gas containing a combustible gas to a fluidized bed gasification furnace and a melting furnace. At least one of them; and a mixed gas delivery channel for supplying the mixed gas to the tritium combustion air supply device. Therefore, the amount of flammable gas released to the atmosphere can be minimized, and the flammable gas can be appropriately processed. According to a second aspect of the present invention, there is provided a gasification melting and burning system having a fluidized bed gasification furnace for gasifying waste, and for burning and dissolving the fluidized gas generated by the fluidized bed gasification furnace. Product melting furnace. The gasification and smelting system includes a non-combustible material discharge device for conveying non-combustible materials contained in waste from a fluidized bed gasification furnace together with a fluidized medium, and for extracting air from the atmosphere and The combustible gas leaked by the fluidized bed gasification furnace through the incombustible substance discharge device, thus forming a mixed gas extraction device of a mixed gas of combustible gas and air. The gasification and melting system also includes a mixed gas supply channel for supplying a mixed gas from the mixed gas extraction device to at least one of the fluidized-bed gasification furnace and the melting furnace. With the foregoing configuration, a mixed gas containing a combustible gas is guided into at least one of a fluidized bed gasification furnace and a melting furnace. Therefore, the amount of flammable gas released to the atmosphere can be minimized, and the flammable gas can be appropriately processed. The gasification and melting system has a dust collector for removing dust from the mixed gas. In this case, because the dust can be removed by the mixed gas, the gasification and melting system can be operated stably for a long time. It is desirable that the dust collector is located upstream of the mixed gas extraction device. In this case, it is possible to avoid the problem that the dust is placed in the mixed gas extraction device 8 315472 200424480 such as in a blower. The mixed gas extraction device may include a blower. In this case, the mixed gas containing flammable gas can be safely processed in the gasification melting system. This configuration is suitable for cases where the flammable gas to be treated contains traces of toxic components. According to a third aspect of the present invention, a gasification and melting method is provided. The waste is gasified in a fluidized bed gasifier. The products produced in the fluidized bed gasifier are burned and melted in an enamel furnace. The non-combustible materials contained in the waste are discharged from the fluidized bed gasifier along with 71 Mb. The flammable gas leaked from the fluidized bed gasifier is extracted together with the air from the atmosphere to form a mixed gas of flammable gas and air. The mixed gas is supplied to at least one of the fluidized-bed gasification furnace and the melting furnace together with the combustion air of the waste. Therefore, the combustible gas-containing mixed gas that has been treated is supplied to at least one of a fluidized bed gasification furnace and a melting furnace. Therefore, the amount of flammable gas released to the atmosphere can be minimized, and the flammable gas can be appropriately processed. This method is suitable for cases where the flammable gas to be treated contains trace toxic components. According to a fourth aspect of the present invention, a gasification and melting method is provided. The waste is gasified in a fluidized bed gasifier. The products produced in the fluidized bed gasifier are burned and melted in a melting furnace. The non-combustible materials contained in the waste are discharged from the fluidized bed gasifier together with the fluidizing medium. The flammable gas leaked from the fluidized bed gasifier is extracted together with air from the atmosphere, thereby forming a mixed gas of flammable gas and air. The mixed gas is supplied to at least one of the fluidized-bed gasification furnace and the melting furnace. 315472 9 200424480 In this way, the processed mixed gas containing combustible gas is supplied to at least one of a fluidized bed gasification furnace and a melting furnace. Therefore, the amount of combustible rolled body released to the atmosphere can be minimized, and the combustible gas can be appropriately treated. This method is suitable for the case where the combustible gas to be treated contains trace toxic components. Dust can be removed from the mixed gas. In this case, since the dust can be removed from the mixed gas by a dust collector, etc., the trouble of the dust in the mixed mess extraction device such as a blower can be avoided, and the gasification melting can be performed stably for a long time. The other objects, features, and advantages of the present invention are described in conjunction with the accompanying drawings, which will be apparent from the following text. The following examples illustrate the preferred embodiments of the present invention. The system will refer to Figures 2 and 3 for the future. | Similar or corresponding parts in the figure are marked with the same reference numbers and will not be repeated. FIG. 2 is a block diagram showing a gasification and melting system according to the first embodiment of the present invention. As shown in Figure 2, the gasification and sintering system has a fluidized bed gasification furnace 11 for gasifying waste A to produce combustible gas, tar and coke; The thirst-type melting furnace 31 capable of generating gas and tar produced by the furnace η. The upper part of the fluidized-bed gasification furnace η is provided with a discharge duct m, which is connected to the melting furnace 31. The specific ": in the example, 'the melting furnace 3 1 has a primary combustion chamber 3 u, and the secondary combustion chamber 3 people nine': 垸 钿 3 1 c. The gasification and melting system also has a non-combustible material treatment device 315472 10 200424480 Including non-combustible material discharge device 21, vibrating screen 23, sand lifting and feeding valve 25, and ^ gas supply channel for extracting air from A gas: The treated waste A is supplied to the fluidized bed gasifier u And pyrolysis in a fluidized bed maintained at C to 750 C into combustible gas and char. Most of the combustible gas and tar generated by pyrolysis together with coke in the form of = are discharged from the discharge duct Ub, and Guide: Burning 21. For example, huge non-combustible materials such as iron, Shao, copper and broken genus together with peaches " shells " are discharged from the bottom ih of the fluidized bed gasifier i 1 and transported in the chute U To the non-combustible substance discharge device 21. By the non-combustible substance discharge unit 21, the mixture of the non-combustible substance and the fluidized medium delivered to the vibrating screen 23 is hunted to separate the non-combustible substance with large particle diameter and ^ Type particle diameter fluidized medium. For example, valuable materials such as iron and Ming Separation and recovery of non-combustible materials with particle diameters. The remaining non-combustible materials are used for landfilling. The fluidized medium with small particle diameters, the sand sand lifter 24 is conveyed upward in a vertical direction, and is returned through the sand feed valve μ. The fluidized bed gasification furnace η. Therefore, the separated fluidized medium can be recycled as the fluidized medium. In the gasification melting and burning system according to this embodiment, the free plate 1 lc of the fluidized bed gasification furnace 11 is generally It is maintained under a negative pressure of about several tens of millimeters of water. When the fluidized medium is fluidized in the fluidized bed gasifier η, pressure loss occurs in the vertical direction of the fluidized bed. Therefore, the fluidized bed gasifier U is operated so that The furnace bottom 11a has a positive pressure of about ^ 00 mm of water column. In order to prevent the combustible gas of the gasification furnace from leaking out of the system, the chute 12 and / or the non-combustible material discharge device is filled with a mixture of a fluidizing medium and a non-combustible material, so Provide two materials 315472 11 200424480 Mountain seal put fruit. But hunting this kind of helmet can avoid service 蚰 1 ... set to be completely sealed, because ..., avoid ground, small 1 flammable gas will leak to the atmosphere. From this point of view , Gasification melting system has J1 ^ ^ ^ ^ ^ ^ Page lice body treatment device 1 is used to treat 3 leaking places with toxic components ΛΑ coffee Α mortal body is mixed with a large amount of industrial milk extracted from the cockroach. Especially the gas, Japanese and Japanese Throughout A, I set 1 to deal with mixed gas. The body bag S is a combustible gas discharged from the bottom of the fluidized bed gasifier 11 through the chute 12 and the non-combustible material discharge device 21, and a large amount of air. Gasification and melting The burning system is also provided with a mixed gas conveying passage 65 for guiding a mixed gas containing a combustible gas processed by the gas processing device ii. The gas processing device i has a filter bag, a dust collector for removing dust from the mixed gas, and a blower 13 As a mixed gas extraction device, it is used to extract combustible gas from the non-combustible substance discharge device 21 and air from the atmosphere. The filter bag 1 b is disposed upstream of the blower 1 a. In order to prevent the combustible gas discharged from the fluidized bed gasifier 11 from leaking out of the system, the line 6 1 is connected to the upper part of the incombustible substance discharge device 2 1 as shown in FIG. 2, and the line 6 2 is connected to the vibrator 2 3 Upstream chute. The sand lifter 24 is provided with an extraction port 24a on the upper part thereof, and the extraction port 24a is connected to the pipeline 63. The lines 61, 62, and 63 are connected to the line 64, and the line 64 is connected to the filter bag 1b of the gas processing apparatus 1. Using these lines, a mixed gas of combustible gas and air discharged from the fluidized-bed gasification furnace 11 is guided to the gas processing device 1 by conduction. With the foregoing configuration, flammable gases can be concentrated without leaking out of the system. The flammable gas extraction point is not limited to the example shown as long as the flammable gas can be prevented from leaking out of the system, the flammable gas can be extracted from any point of the system 12 315472 200424480. Since there is a high concentration of combustible gas near the non-combustible substance discharge device 21, it is necessary to approach the non-combustible substance discharge device 21 to effectively extract the combustible gas. Air is introduced into the line 62 through the air through the air supply passage 26 and the vibrating screen 23 to dilute the combustible gas to be extracted. In this way, the extracted flammable gas is diluted with a large amount of air, and the mixed gas is maintained within the explosive limit range. The diluted flammable gas and air mixed gas is supplied to the filter bag lb. After the dust is removed by the filter bag lb, the mixed gas is introduced into the blower 1 a through guidance. The amount of air to be supplied to the line 62 is preferably at least twice the amount of leaked flammable gas', more preferably at least 5 times the amount of leaked flammable gas. When the amount of air to be supplied is at least twice the amount of leaked combustible gas, the leak of combustible gas from the system can be reliably prevented. If too little air is supplied ', the temperature of the mixed gas will increase. Therefore, the temperature of the combustible gas may rise above the explosion limit, which may cause the combustible gas to explode due to the ignition source. Therefore, a sufficient amount of low-temperature air should be supplied to fully dilute the combustible gas. When the second gas to be supplied is at least 5 times the amount of leaked flammable gas, the line leakage of the flammable gas can be further reliably avoided. The mixed gas of the combustible gas and a large amount of air extracted by the blower 1 a is supplied to the first extraction line 51 and the second extraction line 53 through the mixed gas delivery passage (line) 65, respectively. The first extraction line 51 is connected to a fluidized blower 41 (combustion air supply device) for supplying air to the fluidized-bed gasification furnace 11. The first extraction line 53 is connected to a secondary fan (combustion air supply device) for supplying air to the smelting M 31. The fluidized blower 41 and the secondary fan 42 draw air from the waste pit. Therefore, the unpleasant odor of the air in the waste pit 13 315472 200424480 can prevent leakage from the system. The mixed gas is mixed with the air from the waste pit, and then introduced into the fluidized-bed gasification furnace 11 and the melting furnace 31 through the first extraction line 51 and the second extraction line 53, respectively. Therefore, the combustible gas leaked from the gasification furnace u is burned in the fluidized-bed gasification furnace U and the melting furnace 31 at a high temperature. Therefore, even if the combustible gas contains an organic toxic component, the organic toxic component can be completely oxidized and decomposed in the fluidized bed gasification furnace and the melting furnace 31. In Fig. 2, the mixed gas delivery passage 65 is connected to the first extraction line 5 丨 of the fluidized blower 41 and the second extraction line 53 of the secondary fan 0. However, the mixed gas delivery passage 65 may be connected to any of the first extraction line 51 of the fluidized blower ο and the second extraction line 53 of the secondary fan 42. In addition, the mixed gas conveying passage 65 can bypass the blower 4 丨 and the fan 42 and can be directly connected to the fluidized bed gasification furnace 丨 丨 and / or the melting furnace 31, and directly supplies the mixed gas to the fluidized bed gasification furnace. UA / or melt H. When the mixed gas is supplied to the melting furnace 31, the same effect is expected to be obtained regardless of any of the primary combustion chamber 31a, the secondary combustion chamber 31b, and the third combustion chamber 3b of the mixed gas system. FIG. 3 is a block diagram showing a gasification and melting system according to a second embodiment of the present invention. As shown in Fig. 3, the gasification melting system has a double baffle 22 as a mechanical sealing device located between the incombustible substance discharge device 21 and the vibrating screen 23. The line 62 is connected to a position downstream of the double stretcher 22 and upstream of the vibrating screen. The combustible gas and air are drawn into the filter bag lb through the line 62. In this case, it is not necessary to extract it by the incombustible substance discharge device 21. The double baffle 22 with high sealing capacity is adopted, and the extraction line from the non-combustible material 315472 14 200424480 discharge device 21 (Forcible extraction of combustible gas from the fluidized bed gasifier U by tube edge is shown in Figure 2. ::: The structure shown in the reverse figure 3 is the same. The structure is the same as that when a mechanical seal device such as a double baffle is installed. When handling wastes with a high combustion value, the fuel gas has High concentration of flammable components. Therefore this kind of mechanical seal can be used to treat wastes with high heating value. It can also be used to replace the double-money sheet mechanical seal with a double-valve or valve device. As mentioned above, according to a specific embodiment of the present invention, the gasification and melting system has a gas processing device for processing a mixed gas containing a combustible gas leaked from a fluidized-bed gasification furnace through a non-combustible substance discharge device and extracted from Atmospheric air. The combined gas extracted by the blower of the gas treatment device is mixed with the combustion air to be supplied to the fluidized bed gasifier, or the combustion air to be supplied to the melting furnace. In addition, the mixed gas is directly introduced into at least one of the fluidized bed gasification furnace and the melting furnace through direct introduction. Therefore, the leaked combustible gas can be effectively treated in an appropriate manner. In addition, because the mixed gas is allowed to pass through the high temperature of the melting furnace Combustion area, so toxic components can be decomposed by oxidation. Therefore, according to the present invention, a gasification and melting system has a combustion air supply device 'for supplying a mixed gas containing a combustible gas to a fluidized bed gasification furnace and a melting furnace. At least one of them; and a mixed gas delivery channel for supplying the mixed gas to a combustion air supply device. Therefore, the amount of combustible gas released to the atmosphere can be minimized, and the combustible gas is properly treated. 0 15 315472 200424480 Although Show and explain the details of certain preferred embodiments of the present invention 'but it must be understood that many changes and modifications can be made without departing from the scope of the attached patent application. (Industrial Applicability) The present invention is suitable for use For the treatment of municipal waste, garbage derived fuel (RDF), waste plastic, waste fiber reinforced plastic (waste FRp), Gasification and melting system for waste, automobile waste, waste oil and other waste. [Brief description of the figure] Figure 1 is a block diagram showing a conventional fluidized bed gasifier with non-combustible material processing facilities; Fig. 2 is a block diagram showing a burning system according to the present invention; and Fig. 3 is a block diagram showing a burning system according to the present invention. The first embodiment of the gasification and melting brother is a specific embodiment of the gasification and melting (Description of component symbols) 1 Gas treatment device lb Filter bag 11a Furnace bottom 11c Free board 21 Non-combustible materials ^ 22 Double baffle 24 Sand lifter 25 Sand feed valve 31 Melting furnace la Blower 11 Fluidized bed gas Chemical furnace lib discharge duct 12 chute 23 vibrating screen 24a extraction port 26 air supply channel 31a primary combustion chamber 315472 16 200424480 31b secondary combustion chamber 31c tertiary combustion chamber 41 fluidized blower 42 secondary fan 51 first extraction line 53 Two extraction lines 61 to 64 Line 65 Mixed gas delivery channel A Waste B Combustion air P Fluidized medium 17 315472