九、發明說明： 【發明所屬之技術領域】 本發明係關於適用於燃煤、燃原油及燃重油等之發電設 備上的排煙脫硫裝置之排水處理，尤其係有關藉由曝氣裝 置而將使用海水法脫硫之排煙脫硫裝置的排水（使用完畢 的海水）加以脫碳酸（曝氣）之曝氣裝置。 【先前技術】 先前’將石炭或原油等作為燃料之發電設備中，由銷爐 排出之燃燒排氣氣體（以下稱為「鍋爐排氣」），係將銷爐 排氣中含有的二氧化硫續（S〇2)等硫項氧化物（|§〇χ)去除後 再向大氣排出。作為實施如此脫硫處理之排煙脫硫裝置的 脫硫方式’已知有石灰石石膏法、喷霧乾燥法及海水法。 其中’採用海水法之排煙脫硫裝置（以下稱為「海水脫 硫裝置」）係使用海水作為吸收劑之脫硫方式。該方式係 譬如向將略圓筒之筒形狀縱置之脫硫塔（吸收塔）内部供給 海水及銷爐排氣，藉此將海水作為吸收液而產生濕式基準 之氣液接觸而去除硫續氧化物。 於上述之脫硫塔内作為吸收劑使用之脫硫後的海水（使 用劑海水）’如圖3所示，當流經水路（Seawater 〇xidatiQn Treatment System ; S0TS)1内並加以排水時，係藉由使微 小氣泡2由設置於水路1之底面la之曝氣裝置1〇流出之曝氣 而脫碳酸（曝氣）。 圖4及圖5A、圖5B係顯示先前之曝氣裝置1〇的圖，連接 於空氣供給管11之頭部12係設置於水路1之底面la，各且 132303.doc 1379703 於頭部12安裝有多個大致平行於底面u而水平配置之曝氣 喷嘴13。該曝氣喷嘴13係於覆蓋基材之周圍的塑料製軟管 設有多個小缺口 14, 一般稱之為「噴霧噴嘴」。此種曝氣 喷嘴13係若由於空氣供給管u供給之空氣的壓力而使軟管 膨脹，可讓缺π14打開流出大量大小大致均等的微小氣 泡。 又，將使用海水法脫硫之排煙脫硫裝置之排水（使用劑 海水）藉由曝氣而進行脫碳酸（曝氣）的曝氣裝置，目前尚未 找到與曝氣喷嘴之設置有關而加以揭示之技術文獻。 【發明内容】 然而，以上述之曝氣進行的脫碳酸，若增加供給之空氣 量而增多微小氣泡，將使脫碳酸性能提高。但，稱為喷霧 噴嘴之曝氣喷嘴13，由於為產生良好的微小氣泡而決定最 適宜之空氣供給量’故為增多微小氣泡（空氣量）則有必要 增加喷嘴之數量1，使用相同方法之曝氣喷嘴13之情形 下’將有必要增加設置於水路!之底面。之每個單位面積 的喷嘴數量。 然而，將曝氣喷嘴13水平配置之先前構造，由於'可以於 水路1之底面la設置之每個單位面積的噴嘴數量有限故 該界限成為產生微小氣泡之空氣供給量的制約。即，水路 1之平面目視中，由於水平配置之丨個曝氣喷嘴13覆蓋底面 la之面積增大，故可於上下方向不重合而設置之每個單位 面積的喷嘴數量有界限。 本發明係有鑑於上述之問題而完成者，其目的在於為提 132303.doc 1379703 高藉由曝氣將脫硫後之使用完畢的海水進行脫碳酸（曝氣） 之曝氣裝置的脫碳酸性能，係提供一種可以增加可設置於 水路底面之每個單位面積之曝氣噴嘴的設置數量的曝氣裝 置。 本發明為解決上述問題，係採用以下之方法。 本發明之曝氣裝置，特徵為其係配置於水路，且於使用 完畢的海水令產生微小氣泡而進行脫碳酸，前述水路係使 將海水作為吸收劑使用之排煙脫硫裝置之脫硫塔排出的上 述使用完畢的海水流動而加以排水者，且將連通空氣供給 配管之頭部設置於上述水路之底面，且由安裝於上述頭部 並向垂直方向往上方延伸之垂直配置的曝氣噴嘴產生上述 微小氣泡。 依此曝氣裝置，由於係將連通空氣供給配管之頭部設置 於水路之底面，並由安裝於頭部且向垂直方向往上方延伸 之垂直配置的曝氣噴嘴產生微小氣泡，故與先前之水平配 置比較，可增加可設置於水路底面之每個單位面積之曝氣 喷嘴的設置數量。即，水路之平面目視中，由於垂直配置 之1個曝氣噴嘴覆蓋底面之面積遠遠小於水平配置態樣， 故可增加可設置於每個單位面積之喷嘴的數量。 根據上述之本發明’由於可增加可設置於水路底面之每 個單位面積之曝氣喷嘴的設置數量，故可獲得下述顯著之 效果’即，喷嘴數量之增加份係使產生微小氣泡之空氣供 給量增加’而可使藉由曝氣將脫硫後之使用完畢的海水進 行脫碳酸（曝氣）之曝氣裝置之脫碳酸性能提高。 I32303.doc 1379703 又，當曝氤裝置之脫碳酸性能提高時，係可縮短實施特 定之脫碳酸所必要的水路長度，故可獲得減少水路之設置 費用或設置空間之效果。 【實施方式】 以下，依圖示說明本發明之曝氣裝置之一實施形態。 圖1及圖2A〜圖2C所示之曝氣裝置10A，係譬如設置於水 路（SOTS)l之内部，該水路係讓自將海水作為吸收劑使用 之排煙脫硫裝置之脫硫塔（無圖示）排出的脫硫後的海水（以 下’稱為「使用完畢的海水」）流動，並排水於周邊海域 者。該曝氣裝置1 0A係讓於水路1内流動之使用完畢的海水 中產生大量微小氣泡而進行脫碳酸（曝氣）者。 曝氣裝置10A係經由空氣供給管1丨而連接於設置在水路j 外σ卩之空氣供給源（無圖示）。空氣供給管11之另一端係連 接有沿水路1之底面1 a而加以分配之頭部12。 頭部12係於底面la之流動方向及寬方向加以分支。該頭 邛12之上面，於垂直方向往上方向係安裝有多數稱為「噴 霧喷嘴」之曝氣喷嘴13A。即，本實施形態之曝氣裝置 i〇A，係於水路丨之底面la設置有連通於空氣供給管u之頭 部12，並且以由頭部12之上面向垂直方向往上方向延伸方 式而加以垂直配置地，安裝有多數可從缺口14產生大量微 小氣泡之曝氚喷嘴1 3 A。 於此，簡單說明曝氣喷嘴13A之構造。 曝氣喷嘴13A，如圖2A〜圖2C所示，係經由凸緣15而安 裝於頭部以上面。又，設置於使用完畢的海水中之空氣 132303.doc 及水路寬方向中以均等之間隔配設。 再者’本發明並非限定於上述實施形態，亦可 本發明之主旨的範@内進行適當更改。 【圖式簡單說明】 曝氣 圖1係顯示作為本發明之曝氣裝置之-實施形態 噴嘴之垂直配置的立體圖。 噴嘴 圖2A係顯示關於圖1所示之曝氣噴嘴之垂直配置 安裝構造的平面圖。 噴嘴 一圖2B係顯示關於圖i所示之曝氣噴嘴之垂直配置 安裝構造的側視圖。 曝| 圖2 C係顯示關於圖1所示之曝氣噴嘴之垂直配置 喷嘴之内部構造之主要部分的部分剖面圖。 圖3係顯示設置於水路之曝氣裝置之概要圖。 圖4係顯示先前之曝氣裝置中之曝μ嘴的水平配置 立體圖。 圖5Α係顯示關於圖4所示之曝氣嗔嘴之水平配置，噴嘴 安裝構造的平面圖》 圖顯示關於圖4所示之曝氣噴嘴之水平配置，喷嘴 安裝構造的側視圖。 【主要元件符號說明】 1 水路（SOTS) la 底面 2 微小氣泡 10A 曝氣裝置 132303.doc -12. 1379703 11 空氣供給管 12 頭部 13A 曝氣噴嘴（噴霧噴嘴） 14 缺口 132303.doc - 13 -IX. Description of the Invention: [Technical Field] The present invention relates to drainage treatment of a flue gas desulfurization device suitable for use in a power plant for burning coal, burning crude oil and burning heavy oil, and more particularly to an aeration device An aeration device for decarbonation (aeration) using a drainage (sealed seawater) of a flue gas desulfurization device by seawater desulfurization. [Prior Art] In the power generation equipment that uses charcoal or crude oil as fuel, the combustion exhaust gas (hereinafter referred to as "boiler exhaust gas") discharged from the pin furnace is the sulphur dioxide contained in the exhaust gas of the pin furnace. S〇2) and other sulfur-based oxides (|§〇χ) are removed and then discharged to the atmosphere. As a desulfurization method for the flue gas desulfurization apparatus which performs such desulfurization treatment, a limestone gypsum method, a spray drying method, and a seawater method are known. Among them, the flue gas desulfurization device using seawater method (hereinafter referred to as "seawater desulfurization device") is a desulfurization method using seawater as an absorbent. In this way, for example, the seawater and the pin furnace exhaust gas are supplied to the inside of a desulfurization tower (absorption tower) in which a cylindrical shape is slightly cylindrical, thereby using seawater as an absorption liquid to generate a wet reference gas-liquid contact to remove sulfur. Continued oxides. The desulfurized seawater (using seawater) used as an absorbent in the above-mentioned desulfurization tower is shown in Fig. 3, and flows through the waterway (Seawater 〇xidatiQn Treatment System; S0TS)1 and is drained. The microbubbles 2 are decarbonated (aerated) by aeration which flows out of the aeration device 1 provided on the bottom surface la of the water path 1. 4 and 5A and 5B are views showing a prior aeration device 1A, and the head 12 connected to the air supply pipe 11 is disposed on the bottom surface la of the waterway 1, each of which is mounted on the head 12 at 132303.doc 1379703 There are a plurality of aeration nozzles 13 arranged horizontally substantially parallel to the bottom surface u. The aeration nozzle 13 is provided with a plurality of small notches 14, which are generally referred to as "spray nozzles", in a plastic hose that covers the periphery of the substrate. The aeration nozzle 13 expands the hose by the pressure of the air supplied from the air supply pipe u, so that a large number of minute bubbles having a substantially equal size can be opened and opened by the absence of π14. In addition, an aeration device for decarbonation (aeration) by aeration using a seawater-based desulfurization flue gas desulfurization device (using seawater) is not found in connection with the setting of the aeration nozzle. Reveal the technical literature. SUMMARY OF THE INVENTION However, in the decarbonation by the above aeration, if the amount of supplied air is increased and the microbubbles are increased, the decarbonation performance is improved. However, the aeration nozzle 13 called a spray nozzle determines the optimum air supply amount in order to generate good microbubbles. Therefore, it is necessary to increase the number of nozzles by increasing the number of microbubbles (air amount), using the same method. In the case of the aeration nozzle 13, it will be necessary to increase the bottom surface of the water path! The number of nozzles per unit area. However, in the prior configuration in which the aeration nozzles 13 are horizontally arranged, since the number of nozzles per unit area which can be disposed on the bottom surface la of the water path 1 is limited, the limit becomes a restriction on the amount of air supply for generating minute bubbles. That is, in the planar view of the water path 1, since the area of the bottom surface la covered by the horizontally disposed ones of the aeration nozzles 13 is increased, the number of nozzles per unit area which can be disposed without overlapping in the vertical direction is limited. The present invention has been made in view of the above problems, and the object thereof is to extract the decarbonation performance of an aeration device for decarbonation (aeration) of seawater after desulfurization by aeration using 132303.doc 1379703 An aeration device is provided which can increase the number of aeration nozzles that can be disposed on each unit area of the bottom surface of the waterway. In order to solve the above problems, the present invention adopts the following method. The aeration device of the present invention is characterized in that it is disposed in a waterway, and is decarbonated by using fine water in the used seawater, and the waterway is a desulfurization tower of a flue gas desulfurization device using seawater as an absorbent. The exhausted seawater that has been discharged is used to drain the water, and the head of the connected air supply pipe is placed on the bottom surface of the water passage, and the aeration nozzle is vertically disposed to extend upward in the vertical direction. The above microbubbles are generated. According to the aeration device, since the head of the communication air supply pipe is disposed on the bottom surface of the water passage and the vertical aeration nozzle attached to the head and extending upward in the vertical direction generates minute bubbles, the previous air bubble is used. The horizontal configuration comparison can increase the number of aeration nozzles that can be set to each unit area of the bottom surface of the waterway. That is, in the planar view of the water path, since the area of the vertical surface of one of the aeration nozzles covering the bottom surface is much smaller than that of the horizontal arrangement, the number of nozzles that can be disposed in each unit area can be increased. According to the present invention described above, since the number of aeration nozzles which can be disposed on each unit area of the bottom surface of the water passage can be increased, the following remarkable effect can be obtained, that is, the increase in the number of nozzles causes the air to generate minute bubbles. The increase in the amount of supply increases the decarbonation performance of the aeration device for decarbonation (aeration) of the used seawater after desulfurization by aeration. I32303.doc 1379703 Moreover, when the decarbonation performance of the exposure apparatus is improved, the length of the water path necessary for performing a specific decarbonation can be shortened, so that the effect of reducing the installation cost or the installation space of the water path can be obtained. [Embodiment] Hereinafter, an embodiment of an aeration device according to the present invention will be described with reference to the drawings. The aeration device 10A shown in FIG. 1 and FIG. 2A to FIG. 2C is, for example, disposed inside a waterway (SOTS) 1, which is a desulfurization tower for a flue gas desulfurization device using seawater as an absorbent ( It is not shown in the figure. The desulfurized seawater (hereinafter referred to as "used seawater") flows and is discharged to the surrounding waters. The aeration device 10A is a person who performs decarbonation (aeration) by generating a large amount of fine bubbles in the used seawater flowing in the water path 1. The aeration device 10A is connected to an air supply source (not shown) provided outside the water path j via the air supply pipe 1A. The other end of the air supply pipe 11 is connected to a head portion 12 which is distributed along the bottom surface 1a of the water passage 1. The head portion 12 is branched in the flow direction and the width direction of the bottom surface la. On the upper surface of the head cymbal 12, a plurality of aeration nozzles 13A called "spray nozzles" are attached in the vertical direction. In other words, the aeration device i〇A of the present embodiment is provided with a head portion 12 that communicates with the air supply pipe u on the bottom surface la of the water passage, and that extends upward from the upper surface of the head portion 12 in the vertical direction. Vertically disposed, a plurality of exposure nozzles 1 3 A capable of generating a large amount of minute bubbles from the notches 14 are mounted. Here, the configuration of the aeration nozzle 13A will be briefly described. The aeration nozzle 13A, as shown in Figs. 2A to 2C, is attached to the head via the flange 15. Further, the air is disposed in the used seawater 132303.doc and is arranged at equal intervals in the water path width direction. Further, the present invention is not limited to the above-described embodiments, and may be appropriately modified within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Aeration is shown in Fig. 1 as a perspective view showing a vertical arrangement of nozzles as an aeration device of the present invention. Nozzle Fig. 2A is a plan view showing a vertical arrangement mounting structure with respect to the aeration nozzle shown in Fig. 1. Nozzle Figure 2B is a side elevational view showing the vertical configuration of the aeration nozzle shown in Figure i. Exposure | Fig. 2C is a partial cross-sectional view showing the main part of the internal configuration of the vertically disposed nozzle of the aeration nozzle shown in Fig. 1. Fig. 3 is a schematic view showing an aeration device installed in a waterway. Fig. 4 is a perspective view showing a horizontal configuration of an exposure nozzle in the prior aeration device. Fig. 5 is a plan view showing the horizontal arrangement of the aeration nozzle shown in Fig. 4, and the nozzle mounting structure. Fig. 4 is a side view showing the horizontal arrangement of the aeration nozzle shown in Fig. 4, and the nozzle mounting structure. [Main component symbol description] 1 Water path (SOTS) la Bottom 2 Micro bubble 10A Aeration device 132303.doc -12. 1379703 11 Air supply pipe 12 Head 13A Aeration nozzle (spray nozzle) 14 Notch 132303.doc - 13 -