1301775 九、發明說明： 用於處理腐触（酸或驗性）氣體 一種廢氣處理設備， 【發明所屬之技術領域】 本發明係有關於一韻 【先前技術】 設備，特別是有關於一種 之水洗式廢氣處理設備。 ^ ^業製程所產生的廢氣通常包括有毒物質且具 果錢未經過妥善處理，就會造鼓氣污染。而 ::廢氣中之有毒物質濃度超過法定的限值，就可能危害 /廠員工&般民^的身體健康。為了控制空氣污染物，必 ί利用工氣/亏染防治設備處理廢氣，以使廢氣中之有毒物質 )辰度低於法定的限值，其中―種業界常用的空氣污染防治設 備為水洗式廢氣處理設備。 凊芩閱第一圖，係習知之一種水洗式廢氣洗滌設備，係 以液體洗滌的方法淨化廢氣，此設備至少由洗滌塔i 〇 〇、 洗滌液供給裝置1 〇 2、過濾板1 〇 4、排氣管1 1 2、廢 氣導入管1 1 4、洗滌液循環泵12 0及喷灑裝置12 2所 组成。廢氣導入管1 1 4與排氣管1 1 2皆連接至洗滌塔1 〇 0 ’分別用以將廢氣導入洗滌塔1〇 〇以及將淨化後的廢 氣排出洗滌塔1〇 〇。洗滌液供給裝置1〇 2亦連接至洗滌 塔10 0，用以將洗滌液由注水口1 〇 8注入洗滌塔1 0 0 中。喷灑裝置12 2配置於洗滌塔1 0 0頂部並連接至洗滌 液循環泵12 0。過濾板10 4設置於洗滌塔1 0 0内部並 位於噴灑裝置12 2下方。而洗滌液即是藉由連接洗滌塔1 〇 0之底部及頂部的洗滌液循環泵1 2 0而在洗滌塔1 0 0 内循環。首先，將诜滌液注入洗滌塔10 〇中後，以洗滌液 1301775 循環泵1 2 0輸送至塔頂，並由塔頂進入洗滌塔1 〇 Q中。 接著，洗滌液經喷灑裝置1 2 2而均勻灑下並經過過濾板1 〇 4而回到塔底，然後再由洗滌液循環泵1 2 〇輸送至塔頂 而成一循環。另一方面，廢氣則由塔底導入洗滌塔丄〇 〇中， 然後向上流動並與洗滌液接觸，使廢氣中的污染物（如微粒、 酸氣等）溶入洗滌液，而經淨化的氣體則由塔頂排出。 然而，所述之廢氣洗滌設備，其中洗滌液由喷灑裝置丄 2 2均勻灑下並經過過濾板1 〇 4而回到塔底已溶有廢氣中 之有毒氣體，所以循環中之洗滌液的酸/鹼濃度會持續增 加，此時，廢氣的洗滌效果會逐漸降低。因此，為維持循環 中之洗滌液的純淨度，必須先將部分在循環中之洗滌液由排 水口1 0 9排出，再將乾淨之洗蘇液由注水口1 〇 8注入。 故，洗舰的使用量相當大，造成經濟損失及資 加運作成本。曰 另外’所述之廢氣洗滌設備所使用之喷灑庐 ，含有高漠度之有毒氣體之廢氣，對於含有二 母氧體之廢氣其洗滌效果不彰。 ’ 的問ί。’習知之廢氣洗務設備在實際使用上仍然有其待改羞 本發明人乃特潛心研究並配合學理之利，終於 蘇設；降低絲狀使用量及增加絲效果之廢氣洗 【發明内容】 降低、之—目的，在於提供—種廢氣洗紐備，係且有 洗^之使用量的優點，達到降低運作成本的目的 1301775 本發明之另一目的，在於提供一種廢氣洗滌設備，係具 有洗滌低濃度之有毒氣體之廢氣的優點，達到較佳之洗滌效 果，使空氣品質符合標準。 為達成上述之目的，本發明係提供一種廢氣洗滌設備， 係至少包括：一洗滌塔，係具有一排氣管，係連接至該洗滌 塔的頂部；及一廢氣導入管，係連接至該洗滌塔之一侧；一 洗滌液供給裝置，係連接於該洗滌塔；一第一喷灑裝置，係 設置於該洗滌塔頂部並連接於該洗滌液供給裝置；一第一泵 浦，係具有一第一抽水口及一第一出水口，且該第一抽水口 及該第一出水口分別連接於該洗滌液供給裝置與該第一喷灑 裝置；一第一過濾板，係設置於該第一喷灑裝置上方，且該 第一過濾板之一面與該第一喷灑裝置之喷嘴相對；一第二喷 灑裝置，係設置於該洗滌塔内部並位於該第一喷灑裝置下 方；一第二泵浦，係具有一第二抽水口及一第一二出水口， 且該第二抽水口及該第二出水口分別連接於該洗滌塔底部與 該第二喷灑裝置；一第二過濾板，係設置於該第二喷灑裝置 下方，且該第二過濾板之一面與該第二喷灑裝置之喷嘴相對。 在較佳實施例中，該洗滌液供給裝置更好是一可調節式 之洗蘇液供給裝置。 在較佳實施例中，該第一喷灑裝置之喷嘴更好是可以喷 出霧狀之小水滴。 所述之廢氣洗滌設備，進一步包括一離子交換裝置，係 具有兩端，一端連接於該洗滌塔底部，另一端連接於該第一 喷灑裝置。 所述之廢氣洗滌設備，進一步包括一第三泵浦，係連接 1301775 於該洗滌塔底部與該離子交換裝置之間 【實施方式】 為更進-步闡述本發明為達成敗目的所採取之 段及功效，請㈣以下有關本發明之詳細說明與附圖，相作 本發明之目的、特徵與特點，當可由此得—深人且且體之瞭 解’然而_圖式僅提供參考魏，並非絲 明 加以限制。 ^ 〔詳細說明〕 —請參閱第二圖所示，係本發明之一種廢氣洗滌設備之第 一實施例之配置示意圖。一種廢氣洗滌設備至少包括··一洗 滌塔2 0 0、一洗滌液供給裝置2 1〇、一第一喷灑裝置2 20、一第一泵浦230、一第一過濾板2 4 0、一第二喷 灑裝置2 5 0、一第二泵浦2 6 0及一第二過濾板2 7 0。 该洗條塔2 0 0具有一排氣管2 0 2及一廢氣導入管2 0 4。該廢氣導入管2 〇 4連接至該洗滌塔2 0 0之一側， 用以將廢氣導入洗滌塔2 0 0中，以對其進行洗滌。而該排 氣管2 0 2連接至該洗滌塔2 0 0的頂部，廢氣經過淨化 後，即由排氣管2 0 2排出洗滌塔2 0 0。 該洗滌液供給裝置2 1 0連接於該洗滌塔2 0 0，用以 供給洗滌液（自來水或空調系統的冷凝回收水）於該洗滌塔 2 0 0中。該洗滌液供給裝置2 1 0為一可調節式之洗滌液 供給裝置，作為洗滌液供應源，可以調節注入洗滌塔2 0 0 内的洗蘇液之供給量。 該第一喷灑裝置2 2 0設置於該洗滌塔2 〇 〇項部並連 9 1301775 接於该洗滌液供給裝置210，用以進行廢氣洗滌。該第一 賀灑裝置2 2 0之喷嘴2 2 2可以喷出霧狀之小水滴，增加 液氣之父換面積，可以清洗廢氣中較低濃度之有毒氣體。 該第一泵浦230具有一第一抽水口232及一第一出 水口 2 3 4，且該第一抽水口 2 3 2及該第一出水口 2 3 4 分別連接於該洗滌液供給裝置21 〇與該第一喷灑裝置2 2 〇，用以迫使洗滌液由該洗滌液供給裝置2丄〇流向該第一 喷灑裝置2 2 0，以提供乾诤且無污染的洗滌液於鄰近排氣 管2 0 2的第一喷灑裝置2 2 0。 该弟一過濾板2 4 0設置於該第一喷丨麗裝置2 2 Q上 方，且该弟一過濾板2 4 0之一面與該第一喷灑褒置2 2 〇 之喷嘴2 2 2相對，用以擂止溶有廢氣中之有毒氣體之洗滌 液。在本實施例中，僅用一個過濾板作說明，該第一過濾板 2 4 0也可以是多數個過濾板所組成，以提高廢氣之洗滌效 率。 該第二喷灑裝置2 5 0設置於該洗滌塔2 〇 〇内部並位 於該第一喷麗裝置2 2 0下方，用以進行廢氣洗條。 6亥弟一果浦2 6 0具有一第二抽水口 2 6 2及一第二出 水口 2 6 4，且該第二抽水口 2 6 2及該第二出水口2 64 分別連接於該洗滌塔2 0 0底部與該第二喷灑裝置2 5 〇， 用以迫使洗滌液由該洗滌塔2 0 〇底部流向該第二喷灑裝置 2 5 0 ’以k供次乾淨的洗務液於鄰近廢氣導入管2 〇 4的 第二喷灑裝置2 5 0。 該第二過濾板2 7 0設置於該第二噴丨麗裝置2 $ q下 方，且該第二過濾板2 7 0之一面與該第二噴灑裝置2 5 〇 1301775 之喷嘴2 5 2相對，用以擔止溶有廢氣中之有毒氣體之洗滌 液0 運作時，該第二泵浦2 6 0將洗滌塔2 〇 Q底部的洗滌 液輸送至第二喷灑裝置2 5 0。該第二喷灑裝置2 5 〇之喷 嘴2 5 2將洗滌液喷出，此時，由廢氣導入管2 〇 4進入的 廢氣與洗滌液接觸，使廢氣中之有毒氣體溶於洗滌液中，溶 • 有廢氣中之有毒氣體之洗滌液擋止於該第二過濾板27〇， _· 並流回该洗滌塔2 0 0底部，然後，再由該第二泵浦2 6 〇 輸达至該第二喷灑裝置2 5 0，而成第一階段的廢氣洗滌， 以達到郎省洗蘇液之使用量的目的。 另一面，該洗滌液供給裝置2 1 〇藉由該第一泵浦2 3 0將乾淨且無污染之洗務液輸送至該第一喷灑裝置2 2 〇。 第一喷灑裝置2 2 0之喷嘴2 2 2將洗滌液以霧狀喷出，此 時，經過第一階段的廢氣洗滌，廢氣中仍殘留一些有毒氣體， 忒些有毒氣體與第一喷灑裝置2 2 〇所喷出之洗滌液接觸， 鲁 使殘留之有毒氣體進一步溶於洗滌液中，溶有廢氣中之有毒 氣體之洗滌液擋止於該第一過濾板2 4 〇，並流回該洗滌塔 , 2 0 0底部，以供第一階段的廢氣洗滌使用，而成第二階段 • 的廢氣洗滌。藉此，第一階段的廢氣洗滌所使用的洗滌液可 以供給第二階段的廢氣洗滌所使用，當廢氣由廢氣導入管2 0 4進入，並依序經過第二喷灑裝置2 5 〇及第一喷灑裝置 2 2 0之喷灑洗滌，換句話說，廢氣經過次乾淨之洗滌液及 乾/爭且無污染之洗蘇液的洗蘇過程，達到較佳之洗蘇效果。 當洗滌塔2 0 〇底部的洗滌液的酸/鹼濃度趨於飽和 時，可以由洗滌塔2 〇 〇底部之排水口 2 〇 6排出部分之洗 11 1301775 ^夜再i曰加較乾淨之洗滌液於洗蘇塔2 〇 〇底部，以利該 弟二：麗衫2 5 0進行廢氣洗滌。 -奋閱第二圖所不，係本發明之一種廢氣洗滌設備之第 —貫施例之配置示意圖。 在本貫施例巾，所述之廢氣洗滌設備進—步包括一離子 又m 8 〇及-第三泵浦2 9 Q。該離子交換裝置2 8 〇用乂處理洗滌i合2 0 0底部之溶有廢氣中之有毒氣體的洗 務液，以供洗滌塔2〇〇之第—喷灑裝置22Q進行廢氣洗 條。該離子交換裝置2 8Q具有兩端，其中—端藉由三 粟浦2 9 0連胁連接於該洗祕2 ◦ Q底部續水口 2 〇 6 ’另一端連接於該第-喷灑裝置2 2 Q。藉此，洗蘇塔2 狀0底口(5之,合有廢氣中之有毒氣體的洗滌液經過該離子交換 衣置2 8 0的處理之後，可以進—步供給第—賴裝置μ 0使用，以降低洗務液的使用量。 ^此’本發明可以進行錯段的廢氣 =有毒氣體’使空氣達到高標準之純淨度。而且藉： =，it2 6 Q使得洗騎循環使用，或藉由該離子交換 二 if 使溶有廢氣中之有毒氣體之洗滌液可以再次循 叫效降低洗滌㈣使用量，進—步降低整體運作 的成本。 〔發明特點及優點〕 疋以’相本發賴提供之m絲設備，具 下述之特點： 12 1301775 1、 多階段的廢氣洗滌過程，更有效去除廢氣中的有毒 氣體，使空氣達到高標準之純淨度。 2、 多階段之洗滌液循環模式，更有效降低洗滌液的使 用量，進一步降低整體運作的成本。 惟，以上所述，僅為本發明之具體實施例之詳細說明與 圖式，並非用以限制本發明及本發明之特徵，舉凡所屬技術 領域中具有通常知識者，沿依本發明之精神所做的等效修飾 或變化，皆應包含於本發明之專利範圍中。 【圖式簡單說明】 第一圖係習知之一種水洗式廢氣洗滌設備。 第二圖係本發明之一種廢氣洗滌設備之第一實施例之配置示 意圖。 第三圖係本發明之一種廢氣洗滌設備之第二實施例之配置示 意圖。 【主要元件符號說明】 「先前技術」 排氣管 廢氣導入官 洗滌液循環泵 喷灑裝置 1 1 2 114 12 0 1 2 2 10 0 10 2 10 4 10 8 10 9 2 0 0 2 洗滌塔 洗滌液供給裝置 過濾板 注水口 排水口 「本發明」 洗滌塔 0 2 排氣管 13 1301775 廢氣導入管 排水口 洗滌液供給裝置 第一喷灑裝置 喷嘴 第一泵浦 第一抽水口 第一出水口 第一過濾板 第二喷灑裝置 喷嘴 第二泵浦 第二抽水口 第二出水口 第二過濾板 離子交換裝置 第三泵浦1301775 IX. Description of the Invention: An exhaust gas treatment device for treating a corrosive (acid or test) gas, [Technical Field of the Invention] The present invention relates to a rhyme [Prior Art] device, and particularly relates to a water wash Exhaust gas treatment equipment. ^ The exhaust gas generated by the industrial process usually includes toxic substances and the money is not properly treated, which will create gas pollution. However, if the concentration of toxic substances in the exhaust gas exceeds the legal limit, it may endanger the health of the employees of the factory. In order to control air pollutants, the exhaust gas is treated by the gas/deficient control equipment so that the toxic substances in the exhaust gas are below the legal limit. Among them, the air pollution control equipment commonly used in the industry is water-washed exhaust gas. Processing equipment. Referring to the first figure, a water-washing exhaust gas washing device of the prior art is used for purifying exhaust gas by a liquid washing method. The device is at least a washing tower i 〇〇, a washing liquid supply device 1 〇 2, a filter plate 1 〇 4, The exhaust pipe 1 1 2, the exhaust gas introduction pipe 1 1 4, the washing liquid circulation pump 120 and the spraying device 12 2 are composed. The exhaust gas introduction pipe 1 14 and the exhaust pipe 1 1 2 are both connected to the scrubbing tower 1 〇 0 ' for introducing the exhaust gas into the scrubbing tower 1〇 and discharging the purified exhaust gas to the scrubbing tower 1〇. The washing liquid supply device 1 2 is also connected to the washing column 100 for injecting the washing liquid from the water filling port 1 〇 8 into the washing column 100. The spraying device 12 2 is disposed at the top of the washing column 100 and is connected to the washing liquid circulation pump 120. The filter plate 104 is disposed inside the scrubber 100 and below the spray device 12 2 . The washing liquid is circulated in the washing tower 100 by connecting the washing liquid circulation pump 120 of the bottom and the top of the washing tower 1 〇 0. First, the sputum washing liquid is injected into the washing tower 10 后, and then sent to the top of the column with a washing liquid 1301775 circulating pump 120, and enters the washing tower 1 〇 Q from the top of the column. Then, the washing liquid is uniformly sprinkled through the spraying device 1 2 2 and passed through the filter plate 1 〇 4 to return to the bottom of the column, and then transported to the top of the column by the washing liquid circulation pump 1 2 而成 to form a cycle. On the other hand, the exhaust gas is introduced into the scrubbing tower from the bottom of the tower, and then flows upward and comes into contact with the washing liquid, so that the pollutants (such as particles, sour gas, etc.) in the exhaust gas are dissolved into the washing liquid, and the purified gas is purified. It is discharged from the top of the tower. However, in the exhaust gas washing apparatus, the washing liquid is uniformly sprinkled by the spraying device 并2 2 and passed through the filter plate 1 〇4 to return to the toxic gas in which the exhaust gas is dissolved in the bottom of the column, so the washing liquid in the circulation The acid/base concentration will continue to increase, and at this time, the washing effect of the exhaust gas will gradually decrease. Therefore, in order to maintain the purity of the washing liquid in the cycle, it is necessary to first discharge some of the washing liquid in the circulation from the water discharge port 109, and then inject the clean washing liquid into the water filling port 1 〇 8. Therefore, the use of washing ships is quite large, resulting in economic losses and operating costs.庐 The spray hopper used in the exhaust gas washing equipment described above contains exhaust gas of highly toxic gas, and the washing effect of the exhaust gas containing the second parent oxygen is not good. Asked ’. 'The know-how exhaust gas washing equipment still has its own dizziness in actual use. The inventor has devoted himself to research and cooperated with the interests of academics, and finally set up the exhaust gas to reduce the amount of silky use and increase the silk effect. [Summary] The purpose of the invention is to provide a waste gas washing device, which has the advantages of using the amount of washing, and has the advantage of reducing the operating cost. 1301775 Another object of the present invention is to provide an exhaust gas washing device with washing The advantage of the low concentration of toxic gas exhaust gas achieves a better washing effect, so that the air quality meets the standard. In order to achieve the above object, the present invention provides an exhaust gas washing apparatus, comprising at least: a washing tower having an exhaust pipe connected to the top of the washing tower; and an exhaust gas introduction pipe connected to the washing a washing liquid supply device connected to the washing tower; a first spraying device disposed at the top of the washing tower and connected to the washing liquid supply device; a first pump having a a first water outlet and a first water outlet, wherein the first water outlet and the first water outlet are respectively connected to the washing liquid supply device and the first spraying device; a first filter plate is disposed at the first a spray device, and one surface of the first filter plate is opposite to the nozzle of the first spray device; a second spray device is disposed inside the wash tower and below the first spray device; The second pump has a second pumping port and a first two water outlets, and the second pumping port and the second water outlet are respectively connected to the bottom of the washing tower and the second spraying device; a filter plate, which is disposed in the Below two spraying means, and the second side of the filter plate opposed to the second nozzle of the spray device. In a preferred embodiment, the wash liquid supply device is more preferably an adjustable wash liquid supply device. In a preferred embodiment, the nozzle of the first spray device is preferably capable of ejecting misty water droplets. The exhaust gas washing device further includes an ion exchange device having two ends, one end connected to the bottom of the scrubbing tower and the other end connected to the first spraying device. The exhaust gas washing device further includes a third pump connected between the bottom of the scrubbing tower and the ion exchange device. [Embodiment] To further explain the segment of the present invention for achieving the defeat And (b) the following detailed description of the invention and the accompanying drawings, which are the objects, features and features of the present invention, can be obtained from the deeper and the body is understood. However, the figure only provides a reference to Wei, not Silken is limited. ^ [Detailed Description] - Please refer to the second figure, which is a schematic view showing the configuration of a first embodiment of an exhaust gas washing apparatus of the present invention. An exhaust gas washing device comprises at least a washing tower 200, a washing liquid supply device 2 1 , a first spraying device 2 20 , a first pump 230 , a first filter plate 2 4 0 , a The second spraying device 250, a second pump 260, and a second filter plate 270. The scrubbing tower 200 has an exhaust pipe 2 0 2 and an exhaust gas introduction pipe 2 0 4 . The exhaust gas introduction pipe 2 〇 4 is connected to one side of the scrubbing tower 200 for introducing the exhaust gas into the scrubbing tower 200 to wash it. The exhaust pipe 220 is connected to the top of the scrubber 200, and after the exhaust gas is purified, the scrubber 200 is discharged from the exhaust pipe 220. The washing liquid supply device 210 is connected to the washing column 200 for supplying a washing liquid (condensed water recovered from tap water or an air conditioning system) in the washing column 200. The washing liquid supply device 210 is an adjustable washing liquid supply device, and as a washing liquid supply source, the supply amount of the washing liquid injected into the washing column 200 can be adjusted. The first spraying device 220 is disposed in the washing tower 2 and connected to the washing liquid supply device 210 for exhaust gas washing. The nozzle 2 2 2 of the first shower device 2 2 2 can spray misty water droplets, increase the father exchange area of the liquid gas, and can clean the lower concentration of the toxic gas in the exhaust gas. The first pump 230 has a first water pumping port 232 and a first water outlet port 234, and the first water pumping port 233 and the first water outlet port 2 3 4 are respectively connected to the washing liquid supply device 21 And the first spraying device 2 2 〇 for forcing the washing liquid to flow from the washing liquid supply device 2 to the first spraying device 2 2 0 to provide a dry and non-polluting washing liquid in the adjacent row The first spraying device 2 2 0 of the trachea 2 0 2 . The filter plate 240 is disposed above the first spray device 2 2 Q, and the face of the filter plate 240 is opposite to the nozzle 2 2 2 of the first spray device 2 2 A washing liquid for stopping the toxic gas dissolved in the exhaust gas. In the present embodiment, only one filter plate is used for illustration. The first filter plate 240 may also be composed of a plurality of filter plates to improve the washing efficiency of the exhaust gas. The second spraying device 250 is disposed inside the washing tower 2 并 and under the first blasting device 2 2 0 for performing exhaust gas washing. 6 Haidi Yiguopu 2 6 0 has a second water outlet 2 6 2 and a second water outlet 2 6 4 , and the second water outlet 2 6 2 and the second water outlet 2 64 are respectively connected to the washing The bottom of the tower 200 and the second spraying device 25 〇 are used to force the washing liquid to flow from the bottom of the washing tower 20 to the second spraying device 2 5 0 ' to provide a clean washing liquid The second spraying device 250 is adjacent to the exhaust gas introduction pipe 2 〇4. The second filter plate 270 is disposed below the second squirting device 2 $ q, and one face of the second filter plate 270 is opposite to the nozzle 252 of the second spray device 2 5 〇 1301775. When the washing liquid 0 for sterilizing the toxic gas in the exhaust gas is operated, the second pump 260 transports the washing liquid at the bottom of the washing tower 2 〇Q to the second spraying device 250. The nozzle 2 2 2 of the second spraying device sprays the washing liquid. At this time, the exhaust gas entering from the exhaust gas introducing pipe 2 〇4 comes into contact with the washing liquid, so that the toxic gas in the exhaust gas is dissolved in the washing liquid. Dissolving • The washing liquid with toxic gas in the exhaust gas is stopped at the second filter plate 27〇, _· and flows back to the bottom of the scrubbing tower 200, and then is transported to the bottom of the second pump 2 6 至The second spraying device 250 is used for the first stage of exhaust gas washing to achieve the purpose of using the Langsu washing liquid. On the other hand, the washing liquid supply device 2 1 输送 delivers the clean and non-contaminating cleaning liquid to the first spraying device 2 2 〇 by the first pump 203. The nozzle 2 2 2 of the first spraying device 2 2 sprays the washing liquid in a mist form. At this time, after the first stage of exhaust gas washing, some toxic gas remains in the exhaust gas, and the toxic gas and the first spraying are carried out. The cleaning liquid sprayed by the device 2 2 is contacted, and the residual toxic gas is further dissolved in the washing liquid, and the washing liquid containing the toxic gas in the exhaust gas is stopped at the first filter plate 24 〇 and flows back. The washing tower, the bottom of the 200, is used for the first stage of exhaust gas washing, and is the second stage of the exhaust gas washing. Thereby, the washing liquid used in the first stage exhaust gas washing can be supplied to the second stage exhaust gas washing, and the exhaust gas enters through the exhaust gas introducing pipe 204, and sequentially passes through the second spraying device 2 5 and Spraying of a spraying device 220, in other words, the exhaust gas passes through a clean washing liquid and a washing process of dry/contaminating and non-polluting washing liquid to achieve a better washing effect. When the acid/base concentration of the washing liquid at the bottom of the washing tower 20 趋 tends to be saturated, the washing portion 2 〇 6 at the bottom of the washing tower 2 can be discharged. 11 1301775 ^ night and then clean and wash. The liquid is at the bottom of the Baptista 2 以, to facilitate the exhaustion of the second brother: 丽衫250. - It is a schematic diagram of the configuration of the first embodiment of the exhaust gas washing apparatus of the present invention. In the present embodiment, the exhaust gas washing device further includes an ion and m 8 〇 and a third pump 2 9 Q. The ion exchange unit 28 is used to treat the washing liquid in the exhaust gas in the exhaust gas at the bottom of the washing water tank for the exhaust gas washing of the washing tower 2〇〇-spraying unit 22Q. The ion exchange device 2 8Q has two ends, wherein the - end is connected to the cleaning port 2 by a three-storied 290 shackle. The other end is connected to the first spraying device 2 2 Q. Thereby, the washing tower 2 0 0 bottom mouth (5, the washing liquid containing the toxic gas in the exhaust gas is subjected to the treatment of the ion exchange clothes set to 280, and then can be supplied to the first lag device μ 0 for use. In order to reduce the amount of washing liquid used. ^This 'the invention can carry out the wrong part of the exhaust gas = toxic gas' to make the air to a high standard of purity. And by: =, it2 6 Q makes the wash cycle use, or borrow The ion exchanged two if the washing liquid in which the toxic gas in the exhaust gas is dissolved can be used again to reduce the amount of washing (4), and further reduce the cost of the overall operation. [Inventive Features and Advantages] The m wire equipment has the following characteristics: 12 1301775 1. Multi-stage exhaust gas washing process, which is more effective in removing toxic gases from the exhaust gas, so that the air reaches a high standard of purity. 2. Multi-stage washing liquid circulation mode, The use of the washing liquid is more effectively reduced, and the cost of the overall operation is further reduced. However, the above description is only for the detailed description and the drawings of the specific embodiments of the present invention, and is not intended to limit the present invention and the present invention. Features, equivalent modifications or variations made in accordance with the spirit of the present invention are intended to be included in the scope of the present invention. [First description of the drawings] The first figure is a conventional one. The present invention is a schematic diagram of the configuration of a first embodiment of an exhaust gas washing apparatus of the present invention. The third drawing is a schematic view of the configuration of a second embodiment of an exhaust gas washing apparatus of the present invention. Explanation of Symbols] "Prior Art" Exhaust pipe exhaust gas introduction official washing liquid circulation pump spraying device 1 1 2 114 12 0 1 2 2 10 0 10 2 10 4 10 8 10 9 2 0 0 2 Washing tower washing liquid supply device filtering Plate water inlet drain "Invention" Washing tower 0 2 Exhaust pipe 13 1301775 Exhaust gas inlet pipe Drainage liquid supply device First spray device Nozzle First pump First pumping port First water outlet First filter plate No. Second spray device nozzle second pump second pumping port second water outlet second filter plate ion exchange device third pump