TW538217B - Method and equipment for treating exhaust gas - Google Patents

Method and equipment for treating exhaust gas Download PDF

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Publication number
TW538217B
TW538217B TW090118216A TW90118216A TW538217B TW 538217 B TW538217 B TW 538217B TW 090118216 A TW090118216 A TW 090118216A TW 90118216 A TW90118216 A TW 90118216A TW 538217 B TW538217 B TW 538217B
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Taiwan
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exhaust gas
temperature
decomposition
heat
heat transfer
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TW090118216A
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Chinese (zh)
Inventor
Tadao Murakawa
Keizo Nomachi
Toshiyuki Shinpo
Atsushi Saito
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Hitachi Shipbuilding Eng Co
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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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

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  • Chimneys And Flues (AREA)
  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

In this invention, the heat transfer pipe group of a decomposition acceleration device and the heat transfer pipe group of a high temperature air preheater are arranged in the high temperature region where the temperature of exhaust gas is 700 DEG C or higher on the outlet side of a main combustion chamber and the exhaust gas is mixed and stirred in these heat transfer pipe groups and high temperature radiant heat is applied to the exhaust gas at the same time to accelerate the thermal decomposition of dioxins and/or precursor substances of them and, further, the precursor substances are crushed by the collision of the exhaust gas with the heat transfer pipe groups and combustion reaction is accelerated by the catalytic action of the oxide formed on the surfaces of the heat transfer pipe groups to thermally decompose dioxins and/or the precursor substances thereof, thereby preventing the regeneration of dioxins by accelerating the thermal decomposition of dioxins in exhaust gas.

Description

538217 A7 __B7 五、發明説明(1 ) 技術領域 (請先閱讀背面之注意事項再填寫本頁) 本發明係關於抑制從焚燒處理一般廢棄物或產業廢棄 物等之各種焚化爐或氣化爐,熔融處理灰燼或飛灰等之熔 爐、製鋼用電爐、燒結設備、鋅回收設備、鋁合金製造設 備等所排出之排廢氣中之戴奧辛類或該前驅物的產生之排 廢氣之處理方法及設備。 背景技術 作爲公開技術,於垃圾焚化爐之排廢氣設備中,如第 9圖所示,將從焚化爐2 1之燃燒室2 2所排出之排廢氣 係於二次燃燒室2 3進行二次燃燒,於溫度8 0 0〜 1 1 0 0 °C狀態下從二次燃燒室經由排廢氣通路2 4被導 入氣體冷卻裝置2 5後,被冷卻至3 5 0〜4 50 °C後, 且再被導入空氣預熱器2 6或白煙防止空氣加熱裝置2 7 後被冷卻至1 7 0 °C左右,最後被導入袋濾器2 8,以進 行除塵。 經濟部智慧財產笱員工消費合作社印製 然而,於日本環境省(Ministry of Environment)之法 令中,係被指示出「於溫度8 5 0 °C以上之狀態,須設置 使排廢氣滯留2秒以上之二次燃燒室」以作爲排廢氣處理 之指針,因此如法令要求之目標値係被達成。但是,爲了 環境保全而必須更進一步地抑制戴奧辛類之生成。又,戴 奧辛類之前驅物質中之一種,也就是煤等難燃物質,係容 易從二次燃燒室2 3燃燒不完全地被排出,因此會產生形 成戴奧辛類再生成的主要原因之問題。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 538217 A7 ____B7 _ 五、發明説明(2 ) (請先閲讀背面之注意事項再填寫本頁) 尤其,有機氯化物(以下稱爲戴奧辛類)之再生成的 溫度領域係於2 0 0〜4 0 〇 °C左右,特別是以3 0 0 °C 左右爲最容易再生成。於上述習知之排廢氣設備中,空氣 預熱器2 6及白煙防止空氣加熱器2 7係爲最容易再生成 之溫度領域,因此,認爲於空氣預熱器2 6及白煙防止空 氣加熱器2 7,使戴奧辛大量地被再生成。 本發明係除了習知以來之以被提昌之3 T (時間: Time,紊流:Turbulance,溫度:Temperature)防止戴奧辛 類產生之基本原理之外,本案發明者等係著重於利用施加 輻射熱(Radiation ),可以有效地分解戴奧辛類及該前驅 物質之輻射熱效果,及利用在高溫氣相下由於排廢氣而被 生成之氧化物的催化作用,燃燒接觸後的媒(戴奧辛前驅 物質)等之難燃物質之燃燒反應效果,因此本發明之目的 係在於提供可以有效地抑制排廢氣中之戴奧辛類產生之排 廢氣處理方法及設備。 發明掲示 經濟部智慧財產局員工消費合作社印製 於申請專利範圍第1項所記載之排廢氣處理方法,係 於處理由於焚化、熔融、熱分解所排出之排廢氣之時,於 排廢氣溫度爲7 0 0 °C以上之高溫領域中配置分解促進構 造物,藉由利用前述分解促進構造物混合·攪拌排廢氣’ 並且施加高溫輻射熱,,促進戴奧辛類及/或該前驅物質之 熱分解,再者,藉由使排廢氣與分解促進構造物接觸’利 用被生成於分解促進構造物表面之氧化物的催化作用’促 本紙張尺度適用中國國家標"^準(CNS ) A4規格(210X297公釐) _ 5 538217 A7 B7 五、發明説明(3 ) 進排廢氣之燃燒反應後,而使戴奧辛類及/或該前驅物質 進行熱分解。 (請先閱讀背面之注意事項再填寫本頁) 又,於申請專利範圍第2項所記載之排廢氣處理設備 ,係針對於處理由於焚化、熔融、熱分解所排出之排廢氣 的處理設備,於排廢氣溫度爲7 0 0 °C以上之高溫領域’ 配置分解促進構造物,該分解促進構造物係藉由混合·攪 拌排廢氣,並且施加高溫輻射熱,促進排廢氣中戴奧辛類 及/或該前驅物質之熱分解,而且藉由接觸排廢氣後’被 生成於該表面之氧化物的催化作用,促進燃燒反應’而使 戴奧辛類及/或該前驅物質進行熱分解。 經濟部智慧財產局員工消費合作社印製 根據上述之結構的話,於使戴奧辛類分解之排廢氣溫 度爲7 0 0°C以上之高溫領域中,藉由排廢氣通過分解促 進構造物之間,使排廢氣被混合•攪拌後,促進戴奧辛類 或該前驅物質之熱分解。又,藉由將排廢氣與分解促進構 造物接觸,利用被生成於分解促進構造物表面之氧化物的 催化作用,使煤等難燃物質有效地燃燒。再者,藉由從分 解促進構造物之高溫輻射熱施加於戴奧辛及該前驅物質, 可以使輻射熱有效地被吸收於氯苯、氯苯酚、難燃性媒等 之戴奧辛類之前驅物質,以促進熱分解,因此可以抑制排 廢氣中之戴奧辛類之產生。 於申請專利範圍第3項所記載之排廢氣處理設備,係 針對於申請專利範S[第2項之結構…利用被並列設置之複 數個耐熱構件,而構成分解促進構造物,於前述耐熱構件 之間,藉由各自所釋出之輻射熱相互地加熱後,使耐熱構 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 538217 A7 B7 五、發明説明(4 ) (請先閲讀背面之注意事項再填寫本頁) 件整體被保持於均等的溫度’並且藉由此等耐熱構件之熱 容量,利用由耐熱構件之熱輻射’使溫度變動或溫度不勻 之排廢氣的溫度達到平均化。 根據上述之結構的話’利用並列設置複數個分解促進 構造物,使各個分解促進構造物之輻射熱相互地傳導交流 後,使分解促進構件整體被保持於均等之高溫狀態下。藉 此,即使由於偏流而使排廢氣之溫度不句、由於燃燒特性 或廢棄物材質變動而使排廢氣溫度隨著時間而變動,但是 當排廢物通過分解構造物間之時,使被包含於排廢氣中之 戴奧辛類及該前驅物質被均勻地加熱,而可以促進熱分解 〇 於申請專利範圍第4項所記載之排廢氣處理設備,係 針對於申請專利範圍第2項之結構,分解促進構造物係由 複數個傳熱構件所組成,並且將前述傳熱構件之至少一部 份作爲在控制被流送至傳熱構件內之冷卻媒體後,且在不 燒損傳熱構件表面範圍下保持高溫狀態的分解促進手段。 經濟部智慧財產局員工消費合作社印製 根據上述之結構的話,藉由以冷卻媒體被流送之傳熱 構件作爲分解促進構造物加以採用後而保持高溫狀態,可 以一邊防止傳熱構件之燒損或是防止燒結塊或熔融鹽等之 附著,一邊安定高溫之輻射熱,以供給至戴奧辛類及該前 驅物質。藉此,可以有效地促進排廢氣中之戴奧辛類及該 前驅物質之熱分解民應,更促進由於接觸而產生的熱分解 及由於分解促進構造表面之氧化物的而產生的催化反應, 因此可以有效地減少戴奧辛類。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) ΓΤΙ 538217 A7 _ B7 五、發明説明(5 ) (請先閲讀背面之注意事項再填寫本頁) 於申請專利範圍第5項所記載之排廢氣處理設備,係 針對於處理焚化、熱分解或是熔融廢棄物或灰燼所產生的 排廢氣之排廢氣處理設備中,係將排廢氣再燃燒之再燃燒 室與排廢氣冷卻器,係利用使排廢氣溫度被保持於7 0 0 °C之高溫保持通路被連接著,設置一使排廢氣由前述排廢 氣冷卻器被導入之集塵裝置,至少於排廢氣溫度爲7 0 0 °C以上之前述再燃燒室及高溫保持通路之一方中,配置分 解促進構造物,該分解促進構造物係藉由排廢氣的混合· 攪拌及高溫輻射熱,促進排廢氣中之戴奧辛類及/或該前 驅物質之熱分解,而且藉由接觸排廢氣後,被生成於該表 面之氧化物的催化作用,促進燃燒反應,而使戴奧辛類及 /或該前驅物質進行熱分解。 經濟部智慧財產局員工消費合作社印製 根據上述結構的話,於排廢氣溫度被保持爲7 〇 〇 °C 以上之高溫領域下,藉由分解促進構造物,攪拌混合排廢 氣後,促進戴奧辛類之熱分解,藉由與分解促進構造物之 接觸,以於該表面之氧化物爲觸媒,可以有效地反應燃燒 排廢氣中之戴奧辛類及該前驅物質後’而進行熱分解。再 者,於直至排廢氣冷卻器之局溫保持通路’藉由將排廢熱 中之戴奧辛類及該前驅物質保持在可進行熱分解的7 0 0 。(:以上之高溫領域,促進戴奧辛類之熱分解’並且即使在 習知中被認定是戴奧辛類之再生溫度領域之排廢氣冷卻器 內,由於在高溫領纖下,由於戴奧辛類之前驅物質不會附 著於排廢氣冷卻器的內壁面上,因此可以有效地防止戴奧 辛類之再生。藉此,因爲可以大幅地減少排廢氣中之戴奧 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) ΤβΖ 538217 A7 __ B7 五、發明説明$ ) (請先閲讀背面之注意事項再填寫本頁) 辛類,根據該情況,係不必利用吹入活性炭以吸附戴奧辛 類、或是利用觸媒以分解戴奧辛類,不僅可以使設備之基 本建設成本,而且可以使維修保養成本大幅地降低。再者 ’從結果看來,由於在集塵裝置中被回收之戴奧辛類的回 收量大幅地減少,所以也不須要分解飛灰中戴奧辛類之裝 置(例如加熱分解裝置等)等,因此可以降低設備成本, 減低運轉成本,再者,更大大地有助於設備的小型化。 又,於申請專利範圍第6項所記載之排廢氣處理裝置 ,係針對於申請專利範圍第5項之結構,於高溫保持通路 ,設置可以縮小流路剖面面積之節流通路部。 根據上述結構的話,利用高溫保持通路之節流通路部 ,可以提高流速後以攪拌排廢氣,促進戴奧辛類及該前驅 物質之熱分解。 爲實施發明之最佳形態 爲了更加詳細地說明本發明,根據添附的圖面加以說 明。 經濟部智慧財產局員工消費合作社印製 第1圖及第2圖係爲關於本發明之排廢氣處理設備之 第1實施形態。 該排廢氣處理設備係爲被設置於附有廢熱回收鍋爐之 大型焚化爐者,如第2圖所示,於焚化爐本體3 1中,係 於主燃燒室3 2之下,流側,焚燒排廢氣二次燃燒之二次燃 燒室(再燃燒室)3 4經由管口部3 3被設置,該二次燃 燒室3 4係利用被覆蓋了耐火材料3 5 a之水管壁3 5所 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 538217 A7 B7 五、發明説明(7 ) (請先閱讀背面之注意事項再填寫本頁) 包圍。然而,雖然知道戴奧辛類及該前驅物質係在6 4 0 〜7 4 0°C以上才開始進行熱分解,但是於本發明中’爲 了增加熱分解作用之確實性,於排廢氣溫度7 0 0 °C以上 且達到8 0 0〜1 1 0 左右高溫領域之二次燃燒室 3 4的中央部,使分解促進手段,也就是構成分解促進裝 置3 7之傳熱管群3 7 a被設置。該傳熱管群3 7 a係將 相互平行的複數個傳熱管(傳熱構件)3 7 b以多段式配 置後而構成分解促進構造物。 此等傳熱管3 7 b係經由管口部3 3,使被流入二次燃燒 室3 4之焚化排廢氣更加地混合•攪拌。又利用傳熱管 3 7 b,施加高溫輻射熱於排廢氣中之戴奧辛類或該前驅 物質。再者,藉由與傳熱管3 7 b接觸後,被生成於傳熱 管3 7 b表面之氧化物的催化作用,可以促進排廢氣中之 戴奧辛類或該前驅物質之燃燒反應而有效地進行熱分解。 經濟部智慧財產局員工消費合作社印製 該分解促進裝置3 7,係使陶瓷或是耐火物各自地被 覆蓋於傳熱管3 7 b及水管壁3 5上,而可以有效地釋出 高溫輻射熱,而且使該表面保持在高溫狀態地被構成。換 言之,此等傳熱管3 7 b中,係爲了防止燒損而使提供排 出蒸氣(空氣等)等之冷卻媒體(傳熱媒體)之分解溫度 控制電路5 1被連接,從該傳熱管群3 7 a所排出之冷卻 媒體係經由流量控制閥5 3從媒體排出管5 2被導入熱回 收用之熱交換器5 4,,被冷卻後,從氣水分離器5 5,利 用媒體供給管5 6,經由循環泵5 7、蒸汽鍋5 8,而於 傳熱管群3 7 a被循環著。再者,根據檢測二次燃燒室 -10- 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 538217 A7 B7 五、發明説明(8 ) (請先閲讀背面之注意事項再填寫本頁) 3 4出口的排廢氣溫度之溫度計5 9的檢測値,利用分解 用控制器6 0,操作流量控制閥5 3 ’可以使傳熱管 3 7 b表面於高溫狀態下,有效地釋出輻射熱’並且控制 在不被燒損之溫度範圍內。又’在二次燃燒室3 4中,雖 然會產生由於根據排廢氣流入部位所造成的偏流而使排廢 氣溫度不勻,或是由於垃圾材質或燃燒控制而使排廢氣溫 度變動,但是於該分解促進裝置3 7中,各傳熱管3 7 b 間或傳熱管3 7 b及水管壁3 5係使各自釋出之輻射熱相 互地傳導交流後而被保持在均寺的溫度’而且於各傳熱管 3 7 b間或傳熱管3 7 b及水管壁3 5係被保持有既定之 熱容量。因此,通過傳熱管群3 7 a之排廢氣即使爲溫度 不均勻或是溫度變動之情況,也會受到均等高溫的輻射熱 後而被均勻地加熱。再者,藉由該輻射熱’及利用傳熱管 3 7 b表面之氧化物的催化作用之燃燒,可以使排廢氣中 之戴奧辛類或該前驅物質高效率地進行熱分解。 經濟部智慧財產局員工消費合作社印製 再者,於排廢氣溫度約爲7 5 0〜9 0 0 °C左右之二 次燃燒室3 4出口部,使分解促進構件,也就是具有傳熱 管群之高溫空氣預熱器3 8被設置。而且,藉由利用高溫 空氣預熱器3 8之傳熱管群而進行之排廢氣混合攪拌作用 、高溫輻射熱及催化反應,促進戴奧辛類及該前驅物質之 熱分解。再者,,於從二次燃燒3 4出口部開始上下地迴繞 後,且排廢氣溫度朽爲6 0 〇〜7 0 0 °C左右之燃燒室出 口通路3 9中,使傳熱管群以多段式配置之熱回收鍋爐 4 0被設置。再者,又於燃燒室出口通路3 9之出口,經 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) · 11 - 538217 A7 B7 五、發明説明(9 ) 由中間通風管4 1 ,使排廢氣冷卻器4 2被連接後配置而 成。 (請先閲讀背面之注意事項再填寫本頁) 前述排廢氣冷卻器4 2,係使冷卻水從冷卻水噴嘴噴 灑至排廢氣中後,將排廢氣冷卻至集麈裝置,也就是袋濾 器(電動集塵器亦可)4 4之合適的溫度,大約爲1 5 0 〜7 0 〇C者。 再者,於排廢氣冷卻器4 2中,係使可迅速直接地將 排廢氣導入袋濾器4 4之短通風管4 5被連接著,而於該 短通風管4 5中,使吹入藥劑(活性炭或熟石灰)等之藥 劑吹入噴嘴(未圖示)被配置。又,在袋濾器44中,係 使含有藥劑吸著反應後之戴奧辛類之有害物質或鹽類、重 金屬或塵埃從排廢氣中過濾後除去,使除塵後之排廢氣係 利用引導鼓風機4 5從煙囪4 6被排出至大氣中。 於上述結構中,利用在主燃燒室3 2將垃圾燃燒後, 使產生的焚化排廢氣被導入二次燃燒室3 4內,利用高溫 空氣預熱器3 8及熱回收鍋爐4 0之水管群3 7 a、3 8 a各自地進行熱回收後,被導入燃燒室出口通路部3 9。 經濟部智慧財產局員工消費合作社印製 於該二次燃燒室3 4,係除了使排廢氣在管口部3 3 被攪.拌混合外,而且利用分解促進裝置3 7之傳熱管群 3 7 a及高溫空氣預熱器3 8之傳熱管群,再次地攪拌混 合後,使戴奧辛類或該前驅物質進行熱分解,又,利用使 從傳熱管群3 7 a名高溫輻射熱施加至排廢氣中之戴奧辛 類或該前驅物質,以促進熱分解。再者,利用排廢氣與傳 熱管3 7 b接觸,藉由被生成於傳熱管3 7 b表面之氧化 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -12 - 538217 A7 B7 五、發明説明(1〇 ) 物的催化作用,促進戴奧辛類或該前驅物質,尤其是媒等 難燃物質之燃燒反應,積極地進行熱分解。 (請先閲讀背面之注意事項再填寫本頁) 根據上述實施形態的話,於二次燃燒室3 4 ’在溫度 7 〇 0 °C以上,以8 0 〇 °C〜1 1 0 0 °C者爲佳之高溫狀 態下,藉由利用分解促進裝置3 7之傳熱管群3 7 a及高 溫空氣預熱器3 8之傳熱管群,將排廢氣混合•攪拌’促 進排廢氣中之戴奧辛類及該前驅物質之熱分解。又’於傳 熱管群3 7 a或水管壁3 5之耐火材料3 5 a的表面,使 氧化物被生成,藉由將該氧化物與戴奧辛類或該前驅物質 接觸,以氧化物作觸媒加以作用後,使戴奧辛類及該前驅 物質有效地進行燃燒反應,更加地促進戴奧辛類及該前驅 物質之分解。 又,於分解促進裝置3 7之傳熱管群3 7 a及水管壁 3 5之耐火材料3 5 a中,因爲利用相互間之輻射熱而進 行熱交換, 經濟部智慧財產局員工消費合作社印製 (1 )戴奧辛類或該前驅物質(氯苯、氯苯酚、難燃 性媒等)係由於容易吸取輻射熱能源,因爲從各傳熱管群 3 7 b供給均勻的輻射熱,因此,可以有效地促進戴奧辛 類或該前驅物質之熱分解。 (2 )將通過二次燃燒室3 4之排廢氣,係雖然由於 通過部位不同而使溫度不勻,但是在傳熱管群3 7 a間或 水管壁3 5與傳熱臂群3 7 a之間,使輻射熱相互地傳導 交流後,而呈現均勻的表面溫度,藉此,因爲將高溫輻射 熱均勻地供給至戴奧辛類或該前驅物質,因此,可以有效 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -13 - 538217 A7 ___B7 五、發明説明(11 ) 地促進戴奧辛類或該前驅物質之熱分解。 (3 )於主燃燒室3 2將垃圾燃燒時,雖然由於燃燒 控制特性或垃圾材質的變動而使排廢氣溫度隨著時間而變 動,但是於傳熱管群3 7 a及水管壁3 5與耐火壁3 6保 貯有充足的熱容量,利用該輻射熱,使排廢氣均勻地加熱 後,因此,可以再次地促進戴奧辛類或該前驅物質之熱分 解。 又,在上述實施形態中,係雖然以剖面呈圓形之隔熱 管作爲傳熱構件,但是以中空的板狀或鰭狀係亦可。 第3圖係爲排廢氣處理設備之第2實施形態。 於上述第1實施形態中,雖然以傳熱管(傳熱構件) 作爲分解促進構造物,但是,於第2實施形態中,係爲由 耐熱構件所構成之分解促進構造物者。 換言之,如第3 ( a )圖所示,於二次燃燒室3 7, 將多個以縱長之剖面呈薄型之矩形耐熱構件7 1 ,使二次 燃燒室3 7橫斷般地以多段式1地並列配置後而構成分解促 進構造物。又,如第3 ( b )圖所示,於二次燃燒室3 7 ,使多個以縱長之剖面呈厚型之矩形耐熱構件7 2,將二 次燃燒室3 7橫斷般地以多段式地並列配置後而構成分解 促進構造物。再者,如第3 ( c )圖所示,於二次燃燒室 3 7,使多個剖面呈實心之圓形耐熱構件7 3,將二次燃 燒室3 7橫斷般地以多段式地並列配置後而構成分解促進 構造物。又,使上述耐熱構件7 1〜7 3混合、垂掛亦可 ,當然,使中空之傳熱構件及上述耐熱構件7 1〜7 3混 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 丨_.丨..L.IL——•衣II (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -14- 538217 A7 B7 五、發明説明(12 ) 合亦可。 (請先閲讀背面之注意事項再填寫本頁) 根據上述第2實施形態的話,可以達到與第1實施形 態相同之作用效果。 第4圖〜第7圖係顯示排廢氣處理設備之第3實施形 態。與上述實施形態中之同一構件,係附予相同的符號而 省略說明。 於加煤式焚化爐中,如第1實施形態所示,雖然係爲 利用從排廢氣中被回收的熱以加熱蒸氣後而使渦輪旋轉發 電之大型者,但是第4圖、第5圖所示之加煤式焚化爐本 體1 ,係爲比較小型者。再者,於該排廢氣處理設備中, 係被設置了由排廢氣中進行熱回收之高溫空氣預熱器(高 溫領域熱交換器)4及白煙防止空氣加熱器(高溫領域熱 交換器)1 1。 前述白煙防止空氣加熱器1 1 ,係爲了得到添加至從 煙®被排出之排廢氣中以防止白煙生成之加熱空氣者,且 於煙囪9之入口,使加熱空氣混合於排廢氣中之白煙防止 裝10被設置,提供加熱空氣至該白煙防止裝置1 0者。 經濟部智慧財產局員工消費合作社印製 分解促進構造物係由高溫空氣預熱器4及白煙防止空 氣加熱器1 1中之各傳熱管(傳熱構件)4 a、1 1 a所 構成,而傳熱管4 a、1 1 a係被配置於排廢氣溫度爲 7 0 0 °C以上之部位。 如第5圖所示,,於焚化爐本體1之主燃燒1 a出口, 使二次燃燒室2被形成,利用從二次空氣噴嘴2 a所供給之 二次空氣,將排廢氣中之未燃燒部份進行二次燃燒。其次 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) Τΐ5- 538217 A7 B7 五、發明説明(柁) ~ |_* ΓΜ丨丨曹II (請先閱讀背面之注意事項再填寫本頁) ’於該二次燃燒室2之出□側,被設置了一高溫空氣預熱 器4。再者,於二次燃燒室2之出口,使高溫保持用通風 管3被連接著,且於該高溫保持用通風管3之出口流路 3 b內’使白煙防止空氣加熱器1 1被設置。又,使高溫 保持用通風管3被直接地連接於排廢氣冷卻器5。再者, 利用前述高溫保持用通風管3,使排廢氣溫度保持於可將 戴奧辛類進行熱分解之高溫領域〔約7 0 0 °C以上〕之高 溫保持通路1 2被構成。 又’高溫保持用通風管3,係於入口側,係使較二次 燃燒室2剖面流路狹窄之節流通路部3 a被形成,將從二 次燃燒室被流入高溫保持用通風管3之排廢氣節流,使該 流速加速至1 0〜2 0 m /秒左右後,而形成亂流,將排 廢氣攪拌·混合般地構成。利用該高溫保持用通風管3之 節流通路部3 a ,促進被包含於排廢氣中之戴奧辛類及該 前驅物質之熱分解。 經濟部智慧財產局員工消費合作社印製 排廢氣冷卻器5,係將冷卻水從冷卻水噴嘴5 a噴灑 至排廢氣中後,使排廢氣冷卻至其次袋濾器6之合適溫度 ,約爲1 5 0〜1 7 0 °C者。 如第5圖、第6圖所示,該高溫空氣預熱器4及白煙 防止空氣加熱器1 1係具備有將二次燃燒室2或者出口流 路部3 b橫斷之複數個傳熱管4 a、1 1 a,此等係爲輸 送傳熱媒體(冷卻瑪體),也就是空氣。再者,如第7圖 所示,於各傳熱管4a、11a之表面,係被覆蓋了陶瓷 或者耐火材料4 b、1 1 b後所構成之耐熱構造,使傳熱 本紙張尺度適用中^家標準(CNS ) A4規格(210X297公釐) -16- 538217 A7 _ B7 五、發明説明(14 ) 胃4 a、1 1 a之表面溫度係被加熱至與排廢氣大約相同 之高溫。 (請先閱讀背面之注意事項再填寫本頁) 然而,於排廢氣中,含有燃燒耗時之未燃燒碳成分之 難燃物質(戴奧辛類之前驅物質),例如媒就被包含在內 。此等難燃物質係於二次燃燒室2及高溫保持用通風管3 內’使排廢氣連同煤等未燃燒碳成分與高溫空氣預熱器4 及白煙防止空氣加熱器1 1之傳熱管4 a、1 1 a接觸後 ’藉由被生成於傳熱管4 a、1 1 a表面之氧化物的催化 作用,使戴奧辛類及該前驅物質,尤其是難燃性之媒等未 燃燒碳成分燃燒後,而可以有效地進行熱分解。又,藉由 將傳熱管4 a、1 1 a或二次燃燒室2及高溫保持用通風 管3之壁面的高溫輻射熱照射於戴奧辛類及該前驅質物, 可以再次地促進熱分解。 經濟部智慧財產局員工消費合作社印製 再者,利用排廢氣冷卻器5急速冷卻後,使被形成約 1 7 0 °C左右之排廢氣輸送至通風管7,供給藥劑(活性 炭或熟石灰)後,被導入直接集塵裝置,也就是袋濾器( 電動集塵器亦可)6,將含有藥劑吸著反應後之戴奧辛類 之有害物質或鹽類、重金屬或塵埃除去,利用引導鼓風機 8從煙囪9排出至大氣中。 於上述結構中,於從二次燃燒室2直至排廢氣冷卻器 5之高溫保持通路1 2中,設置了高溫空氣預熱器4及白 煙防止空氣加熱器1, 1,使其被保持於戴奧辛類可進行熱 分解之約7 0 0 °C以上之狀態。再者’利用排廢氣冷卻器 5將排廢氣一口氣冷卻直至袋濾器之導人溫度(約1 5 0 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 「17- 538217 Α7 Β7 五、發明説明(15 ) 〜1 7 0 °C )後,從通風管7迅速地被導入袋濾器6。 (請先閱讀背面之注意事項再填寫本頁) 根據上述實施形態的話,藉由將被保持於約7 0 0 °C 以上之高溫保持用通風管3之流路面積縮小,以加速排廢 氣後而產生亂流,攪拌混合排廢氣後,可以更加地促進排 廢氣中之戴奧辛類或該前驅物質之熱分解。 經濟部智慧財產局員工消費合作社印製 又,藉由利用高溫空氣預熱器4及白煙防止空氣加熱 器1 1之傳熱管4 a、1 1 a將排廢氣混合攪拌、輻射熱 與觸媒反應,可以有效地促進排廢氣中之戴奧辛類或該前 驅物質之熱分解,而大幅地減少戴奧辛類的產生。又,因 爲於直至排廢氣冷卻器之高溫保持通路中,因爲將排廢氣 保持於可使戴奧辛類進行熱分解之高溫領域內之狀態,再 導入排廢氣冷卻器,即使於習知被認定是戴奧辛類之再生 溫度領域,也就是排廢氣冷卻器中’由於可以將形成戴奧 辛類之發生原因的前驅物質分解,且幾乎不會於排廢氣冷 卻器5內之壁面產生戴奧辛類或該前驅物質之附著現象, 因此可以有效地防止戴奧辛類的再生。藉此,因爲可以大 幅地減少排廢氣中之戴奧辛類的產生,因此,不必利用吹 入活性炭以進行戴奧辛類之吸著或是利用觸媒以進行戴奧 辛類的分解,不僅可以使設備之基本建設成本,而且可以 使維修保養成本大幅地降低。再者’從結果看來’因爲於 集塵裝置中被回收之戴奧辛類之回收量大幅地減少’所以 也不須要分解飛灰ΐ戴奧辛類之裝置(例如加熱分解裝置 等)等,因此可以降低設備成本’減低運轉成本,再者, 且大大地有助於設備的小型化。 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐) -18 - 538217 A7 _B7 五、發明説明(16 ) 又,將於第3實施形態中之傳熱管4 a、1 1 a係亦 可採用由陶瓷或耐火材料所製成之亂流形成用之鰭狀這種 ,於使用傳熱媒體或是不使用傳熱媒體(冷卻媒體)之耐 熱構件。 第8圖係顯示排廢氣處理裝置之第4實施形態。與第 3實施形態中之同一構件,係附予相同的符號而省略說明 〇 於上述排廢氣處理設備中,利用刪除第3實施形態中 之白煙防止空氣加熱器1 1 ,且將高溫空氣預熱器4設置 於排廢氣冷卻器5之入口,利用高溫保持用通風管3及高 溫空氣預熱器4之通路,以構成高溫保持通路1 2。又, 雖然將高溫空氣預熱器4設置於排廢氣冷卻器5之入口, 但是亦可將其設置於二次燃燒室2之出口。 根據上述實施形態的話,可以達到與第1實施形態同 樣的效果。 其中,於第3實施形態與第4實施形態中之實施排廢 氣處理設備及習知排廢氣處理設備,測量在二次燃燒室出 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 之 類 辛 奧 戴 的 集 收 被 中 器 濾 袋 和 □。 出示 及所 □ 1 入表 器如 571 袋結 及, 、 度 口 濃 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -19 - 538217 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明(17 ) 【表1】 於排廢氣處理設/ 備中之戴奧辛類測量結果 二次燃燒室出口 袋濾器入口 袋濾器出口 收集飛灰 垃圾焚化爐之 處理能力 習知之排廢氣處 理設備 1.10 4.70-> 約430% 0.14 3.00 50t/13h X 2基 第3實施形態之 排廢氣處理設備 0.04 0.034— 約85% 0.0001 0.093 15t/8h X2基 第4實施形態之 排廢氣處理設備 0.03 0.027— 約90% 0.0049 0.028 8.5t/8h X 2基 (計測單位:排廢氣=ng-TEQ/Nm3,飛灰=ng-TEQ/g) (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -20- 538217 A7 B7 五、發明説明(18 ) (請先閱讀背面之注意事項再填寫本頁) 於表1中,二次燃燒室出口之戴奧辛類之檢出結果, 係由於燃燒狀態、及廢棄物之種類或是材質而會大大地變 動。首先,於二次燃燒室出口中,與習知相較,顯示出戴 奧辛類減低的明顯結果。換言之,於習知例中雖然係爲 1 · 1 0,但是於第3、第4實施形態中各自爲0 · 0 4 及〇 · 0 3,很明顯地減低了。而且也顯示出對於從二次 燃燒室直至袋濾器入口之戴奧辛類之增減量之應値得注目 的結果。 經濟部智慧財產局員工消費合作社印製 換言之,根據該表1的話,於從二次燃燒室出口直至 袋濾器入口之通路中,可以確定的是,於習知之處理設備 中’針對戴奧辛類再生後增加至約4 3 0%,而於第3實 施形態之排廢氣處理設備,係減低至約8 5 %,再者,於 第4實施形態之排廢氣處理設備,係減低至約9 0 %。因 此’於第3及第4實施形態之排廢氣處理設備中,係因爲 可以促進戴奧辛類及該前驅物質的熱分解,因此,不會產 生中途再生成的現象。該結果,即使於袋濾器入口,當然 也是通過法定規制0 · Ing - TEQ/Nm3。根據該結 果的話,於袋濾器中,係只是單一地除去煤塵之其他有害 物質亦可。於該情況下,係可以從在袋濾器中所收集之飛 灰中之戴奧辛濃度分別爲0 · 093、0 · 028之低濃 度者得到驗證。又,雖然飛灰中之戴奧辛濃度的法定規制 係爲3ng — TEQ/Ng3,但是上述之値比起該値相當 地低,因此,不須要分解飛灰中戴奧辛類之熱分解裝置, 其經濟價値也隨之變大。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -21 - 538217 A7 B7 五、發明説明(19 ) (請先閲讀背面之注意事項再填寫本頁) 又,其中,雖然以從焚化廢棄物之垃圾焚化爐所排出 之排廢氣作爲處理排廢氣,但是於其他形式的燒爐,例如 流動床爐或旋轉爐等之焚化爐或者是可以連續進行廢棄物 熱分解及灰燼熔融之氣化爐亦可,又,將火口式、抵抗式 、電弧式、等離子體式等之灰燼或飛灰熔融之熔爐,或是 製鋼用電爐、燒結設備、鋅回收設備、鋁合金製造設備等 所排出之排廢氣處理設備亦可。 又,於上述第1、第3、第4之實施形態,雖然以剖 面呈圓形之筒狀傳熱管或者傳熱管群作爲分解促進構造物 ’但是以具有耐熱性且可使表面保持於高溫狀態,並具備 有充足之熱容量,以混合攪拌棑廢氣之形狀亦可。又,該 形狀係不論是中空狀或爲實心狀,即使係爲板狀或矩形、 或剖面呈多角形之筒狀亦可,從上方向下垂掛的配置,或 者形成格子形狀等係亦可,再者,可以使用金屬或非鐵金 屬、無機物質、陶瓷、耐火物及此等之氧化物等作爲材質 經濟部智慧財產局員工消費合作社印製 產業上之可利用性 關於以上之本發明之排廢氣處理方法及設備,係適用 於從各種焚化爐或者氣化爐、將灰燼或飛灰等熔融處理之 熔爐、製鋼用電爐、燒結設備、鋅回收設備、鋁合金製造 設備所排出之排廢氣處理。 圖面簡單說明 本紙張义^適用中國國家標準(CNS ) A4規格(210X297公釐) ^22 - " 538217 A7 B7 五、發明説明(2〇 ) 第1圖係爲關於本發明之排廢氣處理設備之第1實施 形態構成圖。 (請先閱讀背面之注意事項再填寫本頁) 第2圖係顯示同排廢氣處理設備之焚化爐本體的具體 構造之縱剖面圖。 第3圖(a )〜(c )係顯示關於本發明之排廢氣處 理設備之第2實施形態,各分解促進構造物之槪略剖面圖 〇 第4圖係顯示關於本發明之排廢氣處理設備之第3實 施形態構成圖。 第5圖係顯示同排廢氣處理設備之焚化爐本體的具體 構造之縱剖面圖。 第6圖係顯示第5圖中之A — A剖面圖。 第7圖係顯示同排廢氣處理設備之傳熱管的具體構造 擴大側面圖。 第8圖係顯示關於本發明之排廢氣設備之第4實施形 態構成圖。 第9圖係顯示習知之排廢氣設備構成圖。 經濟部智慧財產局員工消費合作社印製 符號說明 1 焚化爐本體 la 主燃燒室 2 二次燃燒室 2 a 二次空氣噴嘴 3 高溫保持用通風管 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -23 · 538217 A7 B7 五、發明説明(21 3 b 4 4 a 4 b 5 5 a 6 7 8 9 1〇 b 經濟部智慧財產局員工消費合作社印製 1 2 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 節流通路部 出口流路 高溫空氣預熱器(高溫領域熱交換器) 傳熱管(傳熱構件) 耐火材料 冷卻器 冷卻水噴嘴 袋濾器 通風管 引導鼓風機 煙囪 白煙防止裝置 白煙防止空氣加熱器 傳熱管(傳熱構件) 耐火材料 保持通路 焚化爐 燃燒室 二次燃燒室 排廢氣通路 冷卻裝置 空氣f熱器 白煙防止空氣加熱裝置 袋濾器 (請先閲讀背面之注意事項再填寫本頁)538217 A7 __B7 V. Description of the invention (1) Technical field (please read the notes on the back before filling out this page) The present invention relates to the suppression of various incinerators or gasifiers from general waste or industrial waste from incineration. Method and equipment for treating dioxin or exhaust gas generated from the exhaust gas produced by melting furnaces such as ash or fly ash, electric furnaces for steel making, sintering equipment, zinc recovery equipment, aluminum alloy manufacturing equipment and the like. 2. Description of the Related Art As an open technology, as shown in FIG. 9 in an exhaust gas discharge device of a waste incinerator, the exhaust gas discharged from the combustion chamber 2 2 of the incinerator 21 is connected to the secondary combustion chamber 23 to perform secondary operations. Combustion is conducted from the secondary combustion chamber to the gas cooling device 25 through the exhaust gas passage 24 at a temperature of 8 0 ~ 1 1 0 0 ° C, and is cooled to 3 5 0 ~ 4 50 ° C, and After being introduced into the air preheater 26 or the white smoke prevention air heating device 27, it is cooled to about 170 ° C and finally introduced into the bag filter 2 8 for dust removal. Printed by the Intellectual Property of the Ministry of Economic Affairs and the Consumer Consumption Cooperative. However, in the Ministry of Environment's (Ministry of Environment) decree, it was instructed that "at a temperature above 850 ° C, the exhaust gas must be set to stay for more than 2 seconds "Secondary combustion chamber" is used as an indicator for exhaust gas treatment, so the goal required by the law is not achieved. However, for environmental protection, the generation of dioxins must be further suppressed. In addition, one of the precursor substances of dioxins, that is, non-combustible substances such as coal, is easily discharged from the secondary combustion chamber 23 and is not completely burned. Therefore, the main cause of dioxin regeneration is caused. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 538217 A7 ____B7 _ V. Description of the invention (2) (Please read the precautions on the back before filling this page) In particular, organic chlorides (hereinafter referred to as The temperature range for the regeneration of dioxins is around 2000 ~ 400 ° C, especially around 300 ° C. In the conventional exhaust gas exhaust equipment described above, the air preheater 26 and the white smoke prevention air heater 27 are the most easily regenerated temperature areas. Therefore, it is considered that the air preheater 26 and the white smoke prevention air The heaters 2 and 7 greatly regenerate dioxin. In addition to the basic principle of 3T (time: Time, Turbulance, Temperature) used to prevent the occurrence of dioxins, the inventors of the present invention focused on the use of radiant heat (radiation). ), Can effectively decompose dioxins and the radiant heat effect of the precursor substance, and use the catalytic action of the oxides generated by the exhaust gas in the high-temperature gas phase, and burn the inflammable medium (the dioxin precursor substance). The combustion reaction effect of substances, therefore, an object of the present invention is to provide an exhaust gas treatment method and equipment that can effectively suppress the generation of dioxin in exhaust gas. The invention demonstrates that the exhaust gas treatment method described in the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs printed in the first patent application scope is for processing the exhaust gas discharged due to incineration, melting, and thermal decomposition. Decomposition-promoting structures are placed in high-temperature areas above 700 ° C. By using the aforementioned decomposition-promoting structures to mix and agitate exhaust gas, and apply high-temperature radiant heat, promote the thermal decomposition of dioxins and / or the precursor materials. For example, by contacting the exhaust gas with the decomposition-promoting structure, 'using the catalytic action of the oxides generated on the surface of the decomposition-promoting structure', this paper promotes the application of the Chinese National Standard " ^ 准 (CNS) A4 Specification (210X297) (Centi) _ 5 538217 A7 B7 V. Description of the invention (3) After the combustion reaction of the exhaust gas, the dioxin and / or the precursor substance are thermally decomposed. (Please read the precautions on the back before filling out this page.) Also, the exhaust gas treatment equipment described in item 2 of the scope of the patent application is a treatment equipment for the exhaust gas discharged due to incineration, melting, and thermal decomposition. Decomposition-promoting structures are arranged in high-temperature areas where the exhaust gas temperature is above 700 ° C. The decomposition-promoting structures are mixed and stirred to exhaust the exhaust gas, and apply high-temperature radiant heat to promote dioxin and / or the exhaust gas in the exhaust gas. The precursor substance is thermally decomposed, and the dioxin and / or the precursor substance is thermally decomposed by contacting exhaust gas with 'catalysis of an oxide formed on the surface to promote combustion reaction'. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs according to the above-mentioned structure, in the high-temperature area where the temperature of exhaust gas decomposed by dioxin is 700 ° C or higher, the exhaust gas is used to promote the decomposition between the structures through decomposition. The exhaust gas is mixed and stirred to promote the thermal decomposition of dioxins or the precursor materials. In addition, the exhaust gas is brought into contact with the decomposition-promoting structure, and the catalytic action of the oxides formed on the surface of the decomposition-promoting structure is used to effectively combust flame-retardant materials such as coal. In addition, by applying high-temperature radiant heat from the decomposition-promoting structure to dioxin and the precursor substance, the radiant heat can be effectively absorbed into dioxin-type precursor substances such as chlorobenzene, chlorophenol, and a flame-retardant medium to promote heat. Decomposition, so the generation of dioxins in exhaust gas can be suppressed. The exhaust gas treatment equipment described in item 3 of the scope of the patent application is for the patent application S [the structure of item 2 ... using a plurality of heat-resistant members arranged in parallel to form a decomposition promotion structure, and In between, the radiant heat released by each is heated to each other, so that the paper size of the heat-resistant structure paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 538217 A7 B7 V. Description of the invention (4) (Please read first Note on the back, please fill in this page again) The whole part is kept at an equal temperature ', and the heat capacity of such heat-resistant components is used to use the heat radiation from the heat-resistant components to make the temperature of the fluctuating or uneven temperature of the exhaust gas reach an average Into. According to the above-mentioned structure, a plurality of decomposition-promoting structures are arranged in parallel, and the radiant heat of each decomposition-promoting structure is conducted and exchanged with each other, so that the entire decomposition-promoting member is maintained at an even high temperature state. Thereby, even if the temperature of the exhaust gas is incomplete due to the bias flow, and the temperature of the exhaust gas changes with time due to changes in combustion characteristics or waste materials, when the exhaust gas passes through the decomposition structure, it is included in the The dioxins in the exhaust gas and the precursor substance are uniformly heated to promote thermal decomposition. The exhaust gas treatment equipment described in item 4 of the patent application scope is for the structure of item 2 of the patent application scope to promote decomposition. The structure is composed of a plurality of heat transfer members, and at least a part of the aforementioned heat transfer members is used as a cooling medium to be flowed into the heat transfer members, and does not burn the surface of the heat transfer members. Decomposition promotion means to maintain high temperature. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. According to the above structure, the heat transfer member that is flowed through the cooling medium is used as a decomposition promotion structure and maintained at a high temperature state, which can prevent the heat transfer member from being damaged. Or prevent sintered block or molten salt from adhering, and stabilize high-temperature radiant heat to supply dioxin and the precursor substance. This can effectively promote the thermal decomposition of dioxins in the exhaust gas and the precursor materials, and further promote the thermal decomposition due to contact and the catalytic reaction due to the decomposition-promoting oxides on the structure surface. Effectively reduce dioxin classes. This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) ΓΤΙ 538217 A7 _ B7 V. Description of the invention (5) (Please read the precautions on the back before filling this page) The exhaust gas treatment equipment described is aimed at the exhaust gas treatment equipment for treating the exhaust gas generated by incineration, thermal decomposition, or melting waste or ash. It is a recombustion chamber and exhaust gas cooler that re-burns exhaust gas. It is connected by a high-temperature holding passage that keeps the exhaust gas temperature at 700 ° C. A dust collection device is provided to introduce the exhaust gas from the exhaust gas cooler described above, at least when the exhaust gas temperature is 70 ° Decomposition-promoting structures are arranged in one of the above-mentioned recombustion chambers and high-temperature maintaining passages, and the decomposition-promoting structures promote the dioxin and / or the The precursor material is thermally decomposed, and by contacting the exhaust gas, the catalytic action of the oxides formed on the surface promotes the combustion reaction, so that the dioxins and / or the Flooding materials thermal decomposition. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. According to the above structure, in the high temperature area where the exhaust gas temperature is maintained above 7000 ° C, the structure is promoted by decomposition and the exhaust gas is mixed to promote the dioxin and the like. Thermal decomposition, through contact with the decomposition-promoting structure, using the oxide on the surface as a catalyst, can effectively react with the dioxins and the precursor substances in the combustion exhaust gas to perform thermal decomposition. Furthermore, at the local temperature maintaining path up to the exhaust gas cooler ', the dioxins and the precursor substances in the exhaust heat are kept at 700 which can be thermally decomposed. (: The above high temperature field promotes the thermal decomposition of dioxin's, and even in the exhaust gas cooler which is known to be the regeneration temperature field of dioxin's in conventional knowledge, due to the high temperature collar fiber, due to the dioxin's precursor substances are not It will adhere to the inner wall surface of the exhaust gas cooler, so it can effectively prevent the regeneration of dioxins. By this, the dioxin paper size in the exhaust gas can be greatly reduced. The Chinese national standard (CNS) A4 specification (210X297) is applicable. Mm) ΤβZ 538217 A7 __ B7 V. Description of the invention $) (Please read the precautions on the back before filling out this page) Syringes, according to this situation, it is not necessary to use activated carbon to adsorb dioxins or use catalysts Decomposing dioxins can not only reduce the capital construction cost of the equipment, but also greatly reduce the maintenance costs. Furthermore, from the results, since the amount of dioxin recovered in the dust collection device is greatly reduced, there is no need to decompose dioxin-type devices (such as thermal decomposition devices) in the fly ash, so it can be reduced. The cost of equipment reduces operating costs. Furthermore, the larger size contributes to the miniaturization of equipment. In addition, the exhaust gas treatment device described in item 6 of the scope of patent application is directed to the structure of item 5 of the scope of patent application, and a throttle passage portion capable of reducing the cross-sectional area of the flow path is provided in the high-temperature maintaining passage. According to the above structure, by using the throttling passage portion of the high-temperature maintaining passage, the exhaust gas can be stirred and exhausted after the flow rate is increased to promote the thermal decomposition of dioxins and the precursor substance. Best Mode for Carrying Out the Invention In order to explain the present invention in more detail, the attached drawings will be described. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Figures 1 and 2 are the first embodiment of the exhaust gas treatment equipment of the present invention. This exhaust gas treatment equipment is a large-scale incinerator equipped with a waste heat recovery boiler. As shown in FIG. 2, it is incinerated in the incinerator body 31 under the main combustion chamber 32 and on the side of the stream. A secondary combustion chamber (recombustion chamber) 3 4 for secondary combustion of exhaust gas is provided through a nozzle portion 3 3. The secondary combustion chamber 3 4 is a water pipe wall 3 5 which is covered with a refractory material 3 5 a. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 538217 A7 B7 V. Description of the invention (7) (Please read the precautions on the back before filling this page). However, although it is known that thermal decomposition of dioxins and the precursor substance is not started until the temperature is above 640 to 740 ° C, in the present invention, in order to increase the reliability of thermal decomposition, the exhaust gas temperature is 70 ° The central part of the secondary combustion chamber 34 in the high-temperature region above 80 ° C and reaching about 8 0 to 1 1 0 is provided with a decomposition promotion means, that is, a heat transfer tube group 37 a constituting the decomposition promotion device 37. This heat transfer tube group 3 7 a is a plurality of heat transfer tubes (heat transfer members) 3 7 b arranged in parallel with each other in a multi-stage configuration to constitute a decomposition promoting structure. These heat transfer tubes 3 7 b make the incineration exhaust gas that has flowed into the secondary combustion chamber 34 more mixed and stirred through the nozzle portion 33. The heat transfer tube 3 7 b is used to apply high-temperature radiant heat to the dioxins or the precursor substance in the exhaust gas. In addition, by contact with the heat transfer tube 3 7 b, the catalytic action of the oxides formed on the surface of the heat transfer tube 3 7 b can effectively promote the combustion reaction of the dioxins or the precursor substance in the exhaust gas. Perform thermal decomposition. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed this decomposition promotion device 37, so that ceramics or refractory materials are respectively covered on the heat transfer tube 37b and the water pipe wall 35, which can effectively release high temperature It is constituted by radiating heat and keeping the surface at a high temperature. In other words, the heat transfer tubes 3 7 b are connected to a decomposition temperature control circuit 51 that provides a cooling medium (heat transfer medium) such as an exhaust vapor (air, etc.) to prevent burnout, and the heat transfer tubes are connected from the heat transfer tubes. The cooling medium discharged from group 3 7 a is introduced from the medium discharge pipe 5 2 through the flow control valve 5 3 into the heat recovery heat exchanger 5 4 for heat recovery. After being cooled, it is supplied from the gas-water separator 5 5 by the medium. The tubes 56 are circulated to the heat transfer tube group 37a through the circulation pump 57 and the steam boiler 58. Furthermore, according to the detection of the secondary combustion chamber-10- This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 538217 A7 B7 V. Description of the invention (8) (Please read the precautions on the back before filling in this Page) 3 4 Detector temperature of exhaust gas at the outlet 5 9 値, using the decomposition controller 60, operating the flow control valve 5 3 ', the surface of the heat transfer tube 3 7 b can be effectively released under high temperature conditions Radiated heat 'and controlled in a temperature range that will not be burned. Also, in the secondary combustion chamber 34, although the temperature of the exhaust gas is uneven due to a bias flow caused by the exhaust gas inflow portion, or the temperature of the exhaust gas fluctuates due to the waste material or combustion control, In the decomposition promoting device 37, each of the heat transfer tubes 37b, or the heat transfer tubes 37b, and the water pipe wall 35 are conducted and exchanged with each other by radiant heat released from each other, and are maintained at the temperature of Junji Temple. A predetermined heat capacity is maintained between each of the heat transfer tubes 37b or the heat transfer tubes 37b and the water pipe wall 35. Therefore, even if the exhaust gas passing through the heat transfer tube group 37a is uneven in temperature or fluctuates, it will be uniformly heated by radiant heat at an even high temperature. In addition, by the radiant heat 'and the combustion using the catalytic action of the oxide on the surface of the heat transfer tube 37b, the dioxin or the precursor substance in the exhaust gas can be efficiently thermally decomposed. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. At the outlet of the secondary combustion chamber 34, which has an exhaust gas temperature of about 750 ~ 900 ° C, the decomposition promotion component, that is, it has a heat transfer tube. A group of high-temperature air preheaters 38 is provided. In addition, the exhaust gas mixing and stirring function, high-temperature radiant heat, and catalytic reaction by using the heat transfer tube group of the high-temperature air preheater 38 are used to promote the thermal decomposition of dioxins and the precursor materials. Furthermore, after winding up and down from the outlet of the secondary combustion 34, and the exhaust gas temperature decayed to about 600 to 700 ° C, the heat transfer tube group A multi-stage heat recovery boiler 40 is installed. Furthermore, at the exit of the combustion chamber outlet passage 39, the Chinese national standard (CNS) A4 specification (210X297 mm) is applied to this paper size. 11-538217 A7 B7 V. Description of the invention (9) The middle ventilation pipe 4 1 The exhaust gas cooler 42 is connected and arranged. (Please read the precautions on the back before filling in this page) The exhaust gas cooler 4 2 mentioned above is to spray the cooling water from the cooling water nozzle into the exhaust gas, and then cool the exhaust gas to the collecting device, which is the bag filter ( Electric dust collectors are also available.) Suitable temperature for 4 is about 150 ~ 700 ° C. Furthermore, in the exhaust gas cooler 42, a short ventilation pipe 45, which can quickly and directly introduce exhaust gas into the bag filter 4, 4 is connected, and in the short ventilation pipe 45, a medicine is blown in (Activated carbon or slaked lime) and other medicine injection nozzles (not shown) are arranged. In addition, the bag filter 44 filters harmful substances or salts, heavy metals, or dust containing dioxin after the adsorption reaction of the drug is filtered from the exhaust gas, and the exhaust gas after the dust removal is guided by a blower 45. The chimneys 46 are discharged into the atmosphere. In the above structure, after the garbage is burned in the main combustion chamber 32, the incineration exhaust gas generated is introduced into the secondary combustion chamber 34, and the water pipe group of the high-temperature air preheater 38 and the heat recovery boiler 40 is used. Each of the heat recovery at 3 a and 3 a is introduced into the combustion chamber outlet passage portion 39. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs on the secondary combustion chamber 3 4, except that the exhaust gas is stirred at the nozzle 3 3. In addition to mixing, the heat transfer tube group 37 a of the decomposition promotion device 37 and the heat transfer tube group of the high-temperature air preheater 38 are again stirred and mixed to thermally decompose the dioxins or the precursor material. In addition, dioxins or the precursor materials that apply 37 to a high-temperature radiant heat from the heat transfer tube group to the exhaust gas are used to promote thermal decomposition. In addition, the exhaust gas is used to contact the heat transfer tube 3 7 b, and the paper scale applied to the Chinese National Standard (CNS) A4 specification (210X297 mm) -12-538217 by the oxidation generated on the surface of the heat transfer tube 3 7 b A7 B7 5. Description of the invention (1) The catalytic action of the substance (10) promotes the combustion reaction of dioxins or the precursor substance, especially the flame retardant substances such as media, and actively performs thermal decomposition. (Please read the precautions on the back before filling in this page.) According to the above embodiment, in the secondary combustion chamber 3 4 ′ at a temperature of 7 0 0 ° C or more, 8 0 0 ° C ~ 1 1 0 0 ° C In a high-temperature state, by using the heat transfer tube group 37 of the decomposition promotion device 37 and the heat transfer tube group of the high-temperature air preheater 38, the exhaust gas is mixed and stirred to promote the dioxin in the exhaust gas. And thermal decomposition of the precursor material. On the surface of the refractory material 3 5 a of the heat transfer pipe group 3 7 a or the water pipe wall 3 5, an oxide is formed. By contacting the oxide with a dioxin or the precursor substance, the oxide is used as the oxide. After the catalyst is applied, the dioxin and the precursor substance effectively perform a combustion reaction, and the decomposition of the dioxin and the precursor substance is further promoted. In addition, in the heat transfer pipe group 37 a of the decomposition promotion device 37 and the refractory material 3 5 a of the water pipe wall 35, heat exchange is performed because of mutual radiant heat. (1) Dioxins or the precursors (chlorobenzene, chlorophenol, flame retardants, etc.) are easy to absorb radiant heat energy, because uniform radiant heat is supplied from each heat transfer tube group 3 7 b, so it can effectively Promote the thermal decomposition of dioxins or the precursors. (2) Exhaust gas that will pass through the secondary combustion chamber 34, although the temperature is uneven due to different passing parts, but between the heat transfer tube group 3 7a or the water pipe wall 3 5 and the heat transfer arm group 3 7 Between a, the radiant heat is conducted and exchanged with each other to present a uniform surface temperature. Therefore, because the high-temperature radiant heat is uniformly supplied to the dioxins or the precursor substance, the paper size can be effectively applied to the Chinese national standard (CNS ) A4 specification (210X297 mm) -13-538217 A7 ___B7 5. Description of the invention (11) Promote the thermal decomposition of dioxins or the precursor materials. (3) When the waste is burned in the main combustion chamber 32, although the temperature of the exhaust gas fluctuates with time due to changes in the combustion control characteristics or the material of the waste, the heat transfer pipe group 3 7 a and the water pipe wall 3 5 The refractory wall 36 has a sufficient heat capacity, and the radiant heat is used to uniformly heat the exhaust gas. Therefore, the thermal decomposition of dioxins or the precursor substance can be promoted again. In the above-mentioned embodiment, although a heat-insulating tube having a circular cross section is used as the heat transfer member, a hollow plate-like or fin-like system may be used. Fig. 3 is a second embodiment of the exhaust gas treatment equipment. Although the heat transfer tube (heat transfer member) is used as the decomposition promoting structure in the first embodiment, the second embodiment is a decomposition promoting structure composed of a heat-resistant member. In other words, as shown in FIG. 3 (a), in the secondary combustion chamber 37, a plurality of rectangular heat-resistant members 7 1 which are thin in a longitudinal section are formed, and the secondary combustion chamber 37 is divided into a plurality of sections in a transverse manner. The parallel arrangement of Formula 1 constitutes a decomposition promoting structure. As shown in FIG. 3 (b), in the secondary combustion chamber 37, a plurality of rectangular heat-resistant members 7 2 having a thick longitudinal section are formed, and the secondary combustion chamber 37 is transversely divided to A plurality of pieces are arranged in parallel to form a decomposition promoting structure. Further, as shown in FIG. 3 (c), in the secondary combustion chamber 37, a plurality of circular heat-resistant members 7 3 having a solid cross section are formed, and the secondary combustion chamber 37 is transversely divided in a multi-stage manner. They are arranged in parallel to form a decomposition promotion structure. In addition, it is also possible to mix and hang the heat-resistant members 7 1 to 7 3. Of course, the hollow heat transfer member and the heat-resistant members 7 1 to 7 3 are mixed. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297). %) 丨 _. 丨. . L. IL—— • Cloth II (Please read the notes on the back before filling out this page) Order Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -14- 538217 A7 B7 V. Description of Invention (12) It is also possible. (Please read the precautions on the back before filling out this page.) According to the second embodiment, the same effect as the first embodiment can be achieved. Figures 4 to 7 show the third embodiment of the exhaust gas treatment facility. The same components as those in the above-mentioned embodiment are denoted by the same reference numerals and their descriptions are omitted. In the coal-fired incinerator, as shown in the first embodiment, although it is a large person that uses the heat recovered from the exhaust gas to heat the steam and rotates the turbine to generate electricity, as shown in Figs. 4 and 5 The main body 1 of the coal-fired incinerator is shown to be relatively small. Furthermore, in this exhaust gas treatment facility, a high-temperature air preheater (high-temperature area heat exchanger) 4 and a white smoke prevention air heater (high-temperature area heat exchanger) for heat recovery from exhaust gas are provided. 1 1. The aforementioned white smoke prevention air heater 11 is for heating air added to the exhaust gas discharged from the smoke® to prevent the generation of white smoke, and the heated air is mixed with the exhaust gas at the inlet of the chimney 9 The white smoke prevention device 10 is provided to provide heated air to the white smoke prevention device 10. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the printed decomposition promotion structure is composed of high-temperature air preheater 4 and white smoke prevention air heater 1 1 and each heat transfer tube (heat transfer member) 4 a, 1 1 a The heat transfer tubes 4 a and 1 1 a are arranged at a position where the exhaust gas temperature is above 70 ° C. As shown in FIG. 5, the secondary combustion chamber 2 is formed at the main combustion 1 a outlet of the incinerator body 1, and the secondary air supplied from the secondary air nozzle 2 a is used to reduce The combustion part undergoes secondary combustion. Secondly, this paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) Τΐ5- 538217 A7 B7 V. Description of invention (柁) ~ | _ * ΓΜ 丨 丨 Cao II (Please read the notes on the back before filling in this Page) 'A high-temperature air preheater 4 is installed on the exit side of the secondary combustion chamber 2. Furthermore, a high-temperature-maintaining ventilation pipe 3 is connected to the outlet of the secondary combustion chamber 2 and a white smoke prevention air heater 11 is placed in the outlet flow path 3 b of the high-temperature-maintaining ventilation pipe 3. Settings. The high-temperature-maintaining ventilation pipe 3 is directly connected to the exhaust gas cooler 5. Furthermore, the high-temperature-maintaining ventilation pipe 3 is used to maintain the temperature of the exhaust gas at a high-temperature-maintaining path 12 in a high-temperature area [about 700 ° C or more] in which dioxins can be thermally decomposed. The high-temperature maintaining ventilation pipe 3 is connected to the inlet side, and a throttle passage portion 3 a having a narrower flow path than the cross-section of the secondary combustion chamber 2 is formed, and flows from the secondary combustion chamber into the high-temperature maintaining ventilation pipe 3. The exhaust gas is throttled, and the flow velocity is accelerated to about 10 to 20 m / sec. Then, a turbulent flow is formed, and the exhaust gas is stirred and mixed. The throttling passage portion 3a of the high-temperature maintaining ventilation pipe 3 promotes the thermal decomposition of dioxins and the precursor substances contained in the exhaust gas. The exhaust gas cooler 5 is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, which sprays cooling water from the cooling water nozzle 5 a into the exhaust gas, and then cools the exhaust gas to the appropriate temperature of the second bag filter 6, which is about 1 5 0 ~ 1 7 0 ° C. As shown in FIG. 5 and FIG. 6, the high-temperature air preheater 4 and the white smoke prevention air heater 1 1 are provided with a plurality of heat transfers that cross the secondary combustion chamber 2 or the outlet flow path portion 3 b. Pipes 4 a, 1 1 a, these are used to transport the heat transfer medium (cooling the body), that is, air. Furthermore, as shown in Fig. 7, the surfaces of the heat transfer tubes 4a and 11a are heat-resistant structures formed by being covered with ceramic or refractory materials 4b and 1 1b. ^ Home standard (CNS) A4 specification (210X297 mm) -16-538217 A7 _ B7 V. Description of the invention (14) The surface temperature of the stomach 4a, 1a is heated to about the same high temperature as the exhaust gas. (Please read the precautions on the reverse side before filling out this page) However, in the exhaust gas, flame retardant substances (precursor substances such as dioxins) that contain unburned carbon components, which are time-consuming to burn, such as media are included. These non-combustible substances are contained in the secondary combustion chamber 2 and the high-temperature maintaining ventilation pipe 3 ', so that the exhaust gas together with unburned carbon components such as coal and the high-temperature air preheater 4 and the white smoke prevent air heater 1 1 from transferring heat After the tubes 4 a and 1 1 a come into contact, the dioxins and the precursor materials, especially the flame-resistant media, are not burned by the catalytic action of the oxides formed on the surfaces of the heat transfer tubes 4 a and 1 1 a. After the carbon component is burned, thermal decomposition can be effectively performed. In addition, by radiating high-temperature radiant heat from the wall surfaces of the heat transfer tubes 4a, 1a or the secondary combustion chamber 2 and the high-temperature maintaining ventilation tube 3 to dioxins and the precursors, thermal decomposition can be promoted again. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the exhaust gas cooler 5 is used for rapid cooling, and the exhaust gas formed at a temperature of about 170 ° C is conveyed to the ventilation pipe 7, and the medicine (activated carbon or slaked lime) is supplied. Is introduced into a direct dust collection device, that is, a bag filter (electric dust collector is also possible) 6 to remove harmful substances or salts, heavy metals, or dust containing dioxin after the drug adsorption reaction, and use a guided blower 8 from the chimney 9 is discharged into the atmosphere. In the above-mentioned structure, a high-temperature air preheater 4 and a white smoke prevention air heater 1, 1 are provided in the high-temperature maintaining passage 12 from the secondary combustion chamber 2 to the exhaust gas cooler 5 so as to be held at Dioxins can be thermally decomposed to a temperature of about 70 ° C or higher. Furthermore, the exhaust gas cooler 5 is used to cool the exhaust gas in one breath to the inductive temperature of the bag filter (approximately 150) This paper size applies to China National Standard (CNS) A4 (210X297 mm) "17-538217 Α7 Β7 V. Description of the invention (15) ~ 170 ° C), the air filter 7 is quickly introduced into the bag filter 6. (Please read the precautions on the back before filling this page) According to the above embodiment, by applying The area of the flow path of the high-temperature maintaining ventilation pipe 3, which is maintained above about 70 ° C, is reduced to accelerate the exhaust gas to generate turbulent flow. After mixing and exhausting the exhaust gas, the dioxin or exhaust gas in the exhaust gas can be further promoted. Thermal decomposition of this precursor substance. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and by using high-temperature air preheater 4 and white smoke prevention air heater 1 1 heat transfer tubes 4 a, 1 1 a Mixing and stirring, radiant heat and catalyst reaction can effectively promote the thermal decomposition of dioxins or the precursor substances in the exhaust gas, and greatly reduce the generation of dioxin. Also, because the high temperature In the passage, the exhaust gas is kept in a high temperature area where the dioxin can be thermally decomposed, and then the exhaust gas cooler is introduced. Even in the conventionally recognized area of dioxin regeneration temperature, the exhaust gas cooler is also used. Medium can decompose the precursors that cause the occurrence of dioxins, and hardly cause the occurrence of dioxins or the adhesion of the precursor substances on the wall surface in the exhaust gas cooler 5. Therefore, the regeneration of dioxins can be effectively prevented. In this way, because the generation of dioxin in exhaust gas can be greatly reduced, it is not necessary to use activated carbon to blow in the dioxin, or use a catalyst to decompose the dioxin, not only can make the basic construction of the equipment Cost, and can greatly reduce maintenance costs. Moreover, 'from the results', because the amount of dioxin recovered in the dust collection device is greatly reduced', it is not necessary to disassemble the fly ash dioxin (Such as thermal decomposition equipment, etc.), so equipment costs can be reduced. This paper also contributes to the miniaturization of the equipment. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -18-538217 A7 _B7 V. Description of the invention (16) The heat transfer tubes 4 a and 1 1 a in the third embodiment may also be fin-shaped for turbulence formation made of ceramic or refractory materials. The heat transfer medium is used or not used. (Cooling medium) heat-resistant member. Fig. 8 shows the fourth embodiment of the exhaust gas treatment device. The same components as those in the third embodiment are assigned the same reference numerals and descriptions are omitted. By removing the white smoke prevention air heater 11 in the third embodiment, the high-temperature air preheater 4 is installed at the inlet of the exhaust gas cooler 5, and the high-temperature maintaining ventilation pipe 3 and the high-temperature air preheater 4 are used. 2 to form a high-temperature holding path. Moreover, although the high-temperature air preheater 4 is provided at the inlet of the exhaust gas cooler 5, it may be provided at the outlet of the secondary combustion chamber 2. According to the above embodiment, the same effect as that of the first embodiment can be achieved. Among them, the exhaust gas treatment equipment and conventional exhaust gas treatment equipment implemented in the third embodiment and the fourth embodiment are measured in the secondary combustion chamber (please read the precautions on the back before filling this page). Collected by Xinaodai, such as printed by the Property Cooperative Consumer Cooperative, were collected in filter bags and □. Presentation and presentation □ 1 Input device such as 571 bags, and thick paper. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -19-538217 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (17) [Table 1] Measurement results of dioxin in exhaust gas treatment equipment / equipment Secondary combustion chamber outlet bag filter inlet Bag filter outlet Collecting fly ash garbage incinerator treatment capacity Known exhaust gas treatment equipment 1. 10 4. 70- > about 430% 0. 14 3. 00 50t / 13h X 2-based Exhaust gas treatment equipment of the third embodiment 0. 04 0. 034— about 85% 0. 0001 0. 093 15t / 8h X2-based Exhaust gas treatment equipment of the fourth embodiment 0. 03 0. 027— about 90% 0. 0049 0. 028 8. 5t / 8h X 2 base (measurement unit: exhaust gas = ng-TEQ / Nm3, fly ash = ng-TEQ / g) (Please read the precautions on the back before filling this page) The paper size applies to Chinese national standards (CNS ) A4 specification (210X297 mm) -20- 538217 A7 B7 V. Description of the invention (18) (Please read the precautions on the back before filling this page) In Table 1, the detection of dioxins at the exit of the secondary combustion chamber As a result, the burning state and the type or material of the waste greatly change. First of all, in the secondary combustor outlet, compared with the conventional one, it shows obvious results of dioxin reduction. In other words, although it is 1 · 10 in the conventional example, it is obviously reduced to 0 · 4 and 0 · 0 3 in the third and fourth embodiments, respectively. It also shows remarkable results for increasing or decreasing the amount of dioxins from the secondary combustion chamber to the inlet of the bag filter. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In other words, according to Table 1, in the path from the secondary combustion chamber exit to the bag filter inlet, it can be determined that in the conventional processing equipment, The exhaust gas treatment equipment in the third embodiment is reduced to about 85%, and the exhaust gas treatment equipment in the fourth embodiment is reduced to about 90%. Therefore, in the exhaust gas treatment equipment according to the third and fourth embodiments, the thermal decomposition of dioxins and the precursor substances can be promoted, so that no regeneration occurs midway. As a result, of course, even at the inlet of the bag filter, it is of course legally regulated 0 · Ing-TEQ / Nm3. According to this result, in the bag filter, it is only necessary to remove other harmful substances such as coal dust only. In this case, it can be verified from the low concentration of dioxin in the fly ash collected in the bag filter of 0. 093 and 0. 028, respectively. In addition, although the legal regulation of dioxin concentration in fly ash is 3ng — TEQ / Ng3, the above-mentioned 値 is considerably lower than this ,, so it is not necessary to decompose the thermal decomposition device of dioxin in fly ash, which is economical. It also grew larger. This paper size applies to Chinese National Standard (CNS) A4 (210X297 mm) -21-538217 A7 B7 V. Description of Invention (19) (Please read the precautions on the back before filling this page) Also, although The waste gas from the waste incinerator is used to treat waste gas, but it is used in other types of furnaces, such as a fluidized bed furnace or a rotary furnace, or a gas that can continuously perform waste thermal decomposition and ash melting. The chemical furnace can also, and the furnace that melts the ashes or fly ash of the fire mouth type, resistance type, arc type, plasma type, etc., or the steel furnace electric furnace, sintering equipment, zinc recovery equipment, aluminum alloy manufacturing equipment, etc. Exhaust gas treatment equipment is also possible. In the first, third, and fourth embodiments described above, although a cylindrical heat transfer tube or a group of heat transfer tubes having a circular cross-section is used as the decomposition promoting structure, it has heat resistance and can maintain the surface at High temperature state, with sufficient heat capacity, can also be mixed and stirred in the shape of exhaust gas. The shape may be a hollow shape or a solid shape, and may be a plate shape, a rectangular shape, or a cylindrical shape with a polygonal cross section. The shape may be hung from the top to the bottom, or may be formed in a grid shape. Furthermore, metal or non-ferrous metals, inorganic substances, ceramics, refractories, and oxides of these materials can be used as materials in the Intellectual Property Bureau of the Ministry of Economic Affairs, employee consumer cooperatives, and print industry. Exhaust gas treatment methods and equipment are applicable to exhaust gas treatment from various incinerators or gasifiers, melting furnaces that melt ash or fly ash, furnaces for steelmaking, sintering equipment, zinc recovery equipment, and aluminum alloy manufacturing equipment . The drawing briefly explains the meaning of this paper ^ Applicable to China National Standard (CNS) A4 specification (210X297 mm) ^ 22-& 538217 A7 B7 V. Description of the invention (20) The first picture is about the exhaust gas treatment of the present invention Configuration diagram of the first embodiment of the equipment. (Please read the precautions on the back before filling out this page.) Figure 2 is a vertical cross-sectional view showing the specific structure of the incinerator body of the same exhaust gas treatment equipment. Figures 3 (a) to (c) show the second embodiment of the exhaust gas treatment equipment of the present invention, and a schematic cross-sectional view of each decomposition promoting structure. Figure 4 shows the exhaust gas treatment equipment of the present invention. The third embodiment is a structure diagram. Fig. 5 is a longitudinal sectional view showing the specific structure of the incinerator body of the same exhaust gas treatment facility. Fig. 6 is a sectional view taken along A-A in Fig. 5. Fig. 7 is an enlarged side view showing a specific structure of a heat transfer pipe of the same exhaust gas treatment equipment. Fig. 8 is a diagram showing a configuration of a fourth embodiment of the exhaust gas exhausting apparatus according to the present invention. Fig. 9 is a structural diagram showing a conventional exhaust gas exhausting equipment. Description of Symbols Printed by Employees ’Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 Incinerator main body la Main combustion chamber 2 Secondary combustion chamber 2 a Secondary air nozzle 3 Ventilation pipes for high temperature maintenance This paper is in accordance with China National Standard (CNS) A4 specifications ( 210X297 mm) -23 · 538217 A7 B7 V. Description of the invention (21 3 b 4 4 a 4 b 5 5 a 6 7 8 9 1 0b Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 2 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 High-temperature air preheater (high-temperature area heat exchanger) at the outlet of the throttling passage section Heat transfer tube (heat transfer member) Refractory cooler Cooling water nozzle bag filter Ventilation tube guide Blower chimney white smoke prevention device White smoke prevention air heater heat transfer tube (heat transfer member) Refractory holding path Incinerator combustion chamber secondary combustion chamber exhaust gas path cooling device air f heater white smoke prevention air heating device bag filter ( (Please read the notes on the back before filling out this page)

本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -24 - 538217 A7 B7 經濟部智慧財產局員工消費合作社印製 五、 發明説明(22 ) 3 1 焚化爐主體 3 2 主燃燒室 3 3 管口部 3 4 二次燃燒室(再燃 3 5 水管壁 3 5 a 耐火材料 3 7 分解促進裝置 3 7 a 傳熱裝置 3 8 高溫空氣預熱器 3 9 燃燒室出口通路 4 〇 熱回收鍋爐 4 1 中間通風管 4 2 排廢氣冷卻器 4 4 袋濾器 4 5 短通風管 4 6 煙囪 5 1 分解溫渡控制電路 5 2 媒體排出管 5 3 流量控制閥 5 4 熱交換器 5 δ 氣水分離器 5 6 媒體ί共給管 5 7 循環泵 5 8 蒸汽鍋 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -25 - 538217 A7 B7 五、 發明説明(23 ) 5 9 溫 度 計 7 1 耐 熱 構 件 7 2 耐 熱 構 件 7 3 耐 熱 構 件 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -26 ·This paper size applies to China National Standard (CNS) A4 (210X297 mm) -24-538217 A7 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (22) 3 1 Incinerator main body 3 2 Main combustion chamber 3 3 Nozzle section 3 4 Secondary combustion chamber (recombustion 3 5 Water pipe wall 3 5 a Refractory material 3 7 Decomposition promoting device 3 7 a Heat transfer device 3 8 High temperature air preheater 3 9 Combustion chamber outlet passage 4 〇 Heat Recovery boiler 4 1 Intermediate ventilation pipe 4 2 Exhaust gas cooler 4 4 Bag filter 4 5 Short ventilation pipe 4 6 Chimney 5 1 Decomposition temperature control circuit 5 2 Media discharge pipe 5 3 Flow control valve 5 4 Heat exchanger 5 δ Gas Water separator 5 6 Media altogether supply pipe 5 7 Circulation pump 5 8 Steam boiler (Please read the precautions on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) -25 -538217 A7 B7 V. Description of the invention (23) 5 9 Thermometer 7 1 Heat-resistant component 7 2 Heat-resistant component 7 3 Heat-resistant component (Please read the precautions on the back before filling out this page) Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives This paper is sized to the Chinese National Standard (CNS) A4 (210X297 mm) -26 ·

Claims (1)

538217 A8 B8 C8 D8 々、申請專利範圍 1 · 一種排廢氣之處理方法,其特徵爲: 於處理由於焚化、熔融、熱分解所排出之排廢氣之時 (請先閲讀背面之注意事項再填寫本頁) 於排廢氣溫度爲7 0 0 °C以上之高溫領域’配置分解 促進構造物, 藉由利用前述分解促進構造物,混合•攪拌排廢氣’ 並且施加高溫輻射熱,促進戴奧辛類及/或該前驅物質之 熱分解, 再者,藉由排廢氣與分解促進構造物接觸’利用被生 成於分解促進構造物表面之氧化物的催化作用,促進排廢 氣之燃燒反應後,而使戴奧辛類及/或該前驅物質進行熱 分解。 2 · —種排廢氣之處理設備,係針對於處理由於焚化 、熔融、熱分解所排出之排廢氣之排廢氣處理設備’其特 徵爲: 經濟部智慧財產局員工消費合作社印製 於排廢氣溫度爲7 0 0 °C以上之高溫領域,配置分解 促進構造物,該分解促進構造物係藉由混合•攪拌排廢氣 ,並且施加高溫輻射熱,促進戴奧辛類及/或該前驅物質 之熱分解,而且藉由接觸排廢氣後,被生成於該表面之氧 化物的催化作用,促進燃燒反應,而使戴奧辛類及/或該 前驅物質進行熱分解。 3 ·如申請專利範圍第2項之排廢氣之處理設備,其 中利用並列設置之複數個耐熱構件而構成分解促進構造物 -27- 本紙張尺度適用中國國家摞準(CNS ) A4規格(210X297公釐) 538217 A8 B8 C8 D8 經濟部智慧財產局員工消費合作社印製 六、申請專利範圍 於前述耐熱構件之間,藉由各自所釋出之輻熱射相互 地加熱後,使耐熱構件整體保持於均等之溫度,並且藉由 此等耐熱構件之熱容量,利用由耐熱構件產生之熱輻射, 使溫度變動或溫度不勻之排廢氣之溫度達到平均化。 4 ·如申請專利範圍第2項之排廢氣之處理設備,其 中分解促進構造物由複數個傳熱構件所構成, 將前述傳熱構件之至少一部份作爲控制被流送至傳熱 構件內之冷卻媒體,且在不燒損傳熱構件表面的範圍保持 高溫狀態之分解促進手段。 5 . —種排廢氣之處理設備,係針對於處理焚化或者 熱分解廢棄物或灰,或者熔融排廢氣之排廢氣處理設備, 其特徵爲: 使排廢氣再燃燒之再燃燒室與排廢氣冷卻器,利用被 保持於排廢氣溫度爲7 0 0 °C以上之高溫保持通路來連接 設置一使由前述排廢氣冷卻器之排廢氣被導入之集塵 裝置, 至少於排廢氣溫度爲7 0 0 °C以上之前述再燃燒室與 高溫保持通路之一方,配置分解促進構造物,該分解促進 構造物係藉由排廢氣之混合•攪拌及高溫輻射,熱,促進排 廢氣中之戴奧辛類及/或讓前驅物質之熱分解,而且藉由 接觸排廢氣後,被丰成於該表面之氧化物的催化作用’促 進燃燒反應,而使戴奧辛類及/或該前驅物質進行熱分解 (請先閲讀背面之注意事項再填寫本頁) 、訂 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X 297公嫠) -28- 538217 A8 B8 C8 D8 六、申請專利範圍 6 .如申請專利範圍第5項之排廢氣之處理設備,其 中於高溫保持通路設置了縮小流路剖面面積之節流通路 部。 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐)538217 A8 B8 C8 D8 々, patent application scope 1 · A method for treating exhaust gas, which is characterized by: When dealing with exhaust gas due to incineration, melting, thermal decomposition (please read the precautions on the back before filling in this Page) In the high-temperature area where the exhaust gas temperature is 700 ° C or higher, 'decompose the decomposition promotion structure, and use the aforementioned decomposition promotion structure to mix and stir the exhaust gas' and apply high-temperature radiant heat to promote dioxin and / or the The thermal decomposition of the precursor material, and by contacting the exhaust gas with the decomposition-promoting structure, 'the catalytic action of the oxide generated on the surface of the decomposition-promoting structure is used to promote the combustion reaction of the exhaust gas, so that the dioxins and / Or the precursor substance is thermally decomposed. 2 · —A kind of exhaust gas treatment equipment, which is an exhaust gas treatment equipment for treating exhaust gas discharged by incineration, melting, and thermal decomposition. It is characterized by: printed on the exhaust gas temperature by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Decomposition-promoting structures are arranged in high-temperature areas above 700 ° C. The decomposition-promoting structures are used to exhaust gases by mixing and stirring, and apply high-temperature radiant heat to promote the thermal decomposition of dioxins and / or the precursor materials. After contact with the exhaust gas, the catalytic reaction of the oxides formed on the surface promotes the combustion reaction, and the dioxins and / or the precursor substances are thermally decomposed. 3 · If the exhaust gas treatment equipment in item 2 of the patent application scope, which uses a plurality of heat-resistant components arranged side by side to form a decomposition promotion structure-27- This paper size applies to China National Standard (CNS) A4 (210X297) (%) 538217 A8 B8 C8 D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. The scope of the patent application is between the aforementioned heat-resistant members, and the heat-resistant members are kept at the entire temperature after they are heated by the radiation heat emitted by each of them. The temperature is uniform and the temperature of the flue gas with fluctuating or uneven temperature is averaged by the heat capacity of the heat-resistant member and the heat radiation generated by the heat-resistant member. 4 · If the exhaust gas treatment equipment of item 2 of the patent application scope, wherein the decomposition promotion structure is composed of a plurality of heat transfer members, at least a part of the aforementioned heat transfer member is flowed into the heat transfer member as a control. Decomposition promoting means for cooling the medium and maintaining a high temperature state within a range that does not burn the surface of the heat transfer member. 5. A kind of exhaust gas treatment equipment, which is aimed at treating incineration or thermal decomposition waste or ash, or melting exhaust gas, which is characterized by: cooling the recombustion chamber and exhaust gas for re-burning exhaust gas The device uses a high-temperature maintaining passage maintained at an exhaust gas temperature of 700 ° C or higher to connect and install a dust collecting device for introducing exhaust gas from the exhaust gas cooler, at least to an exhaust gas temperature of 700 One of the aforementioned recombustion chamber and the high-temperature maintaining passage above ° C is provided with a decomposition promoting structure, which promotes dioxin and / or heat in the exhaust gas through mixing, stirring, and high-temperature radiation. Or allow the thermal decomposition of the precursor material, and promote the combustion reaction by catalytic action of the oxide formed on the surface after contacting the exhaust gas, so that the dioxins and / or the precursor material are thermally decomposed (please read first Note on the back, please fill in this page again). The size of the paper used in the edition is applicable to the Chinese National Standard (CNS) A4 (210 X 297 cm) -28- 538217 A8 B8 C8 D8 6 6 scope of patent as Patent Application range of the exhaust gas discharge processing apparatus of item 5, wherein the passage is provided to maintain reduced cross-sectional area of the flow path throttling passage portion to a high temperature. (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper size applies to Chinese National Standard (CNS) A4 (210X297 mm)
TW090118216A 2000-02-04 2001-07-25 Method and equipment for treating exhaust gas TW538217B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI504844B (en) * 2012-11-30 2015-10-21 Ron Hsin Chang A method of voc abatement with energy recovery and rto waste heat recovery boiler using the method

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