1220804 五、發明說明（1) 【技術領域】 本發明係有關一種燃料電池重組器之混合單元，尤指一 種藉由重新設計導引機構的手段，引導重組氣體與空氣（氧 氣）充分混合，以避免殘留一氧化碳降低觸媒活性的氣體混 合單元。 【先前技術】 貝子父換膜燃:料電池（pr〇t〇n Exchange Membrane Fue] [6113)之結構係由兩塊雙極板(^卜？〇181^]?181：6)，中間夾一 層膜電極組（Membrane Electrode Assembly，MEA)組成。雙 極板之材料需具有良好的導電性（例如石墨），且板上具有流 道之結構設計；膜電極組則是在一層高分子膜（例如Nafi〇n) 的表層塗上電極觸媒及黏貼碳布或碳紙。 燃料電池的發電原理係藉著氫氣及氧氣的結合，產生 水、熱與電，陰極是空氣端，為供應化學反應的氧化劑，陽 極為燃料端，可使用氫氣、天然氣或石油等石化材料作為燃 料來源，右疋採用氫氣以外的燃料，則需先經過重組反應， 將天然氣等石化燃料處理成富氫的重組氣體（ref〇rmate gas)後，才能導入陽極反應。 重組氣製氫技術發展已久，在工業上被大量使用，1製 造出來的重組氣體除了高濃度的氫氣外，還有一些反應產 物，如水、二氧化碳、一氧化碳與剩餘燃料等，一般二業 重組器，只要求氫氣濃度達標準，對其他氣體成分並不在 意，但使用在燃料電池技術中，因為膜電極組的電極材料 常是白金（Pt)或白金合金，一氧化碳很容易吸附於其上，1220804 V. Description of the Invention (1) [Technical Field] The present invention relates to a mixing unit for a fuel cell reformer, and particularly to a method for redesigning a guide mechanism to guide the recombination gas and air (oxygen) to be fully mixed to Gas mixing unit to avoid residual carbon monoxide to reduce catalyst activity. [Prior art] The structure of the bee-father exchange membrane fuel cell (pr〇ton Exchange Membrane Fue] [6113] is structured by two bipolar plates (^ 卜? 〇181 ^)? 181: 6), the middle clip A membrane electrode group (Membrane Electrode Assembly, MEA). The material of the bipolar plate must have good conductivity (such as graphite) and the structure design of the flow channel on the plate; the membrane electrode group is coated with an electrode catalyst on the surface of a polymer film (such as Nafi〇n) and Paste carbon cloth or carbon paper. The principle of fuel cell power generation is the combination of hydrogen and oxygen to produce water, heat and electricity. The cathode is the air end, which is used to supply the chemical reaction oxidant. The anode is the fuel end. Hydrogen, natural gas or petroleum can be used as fuel. Source, the right 疋 uses fuel other than hydrogen, you need to go through the recombination reaction, the natural gas and other fossil fuels are processed into hydrogen-rich recombination gas (refOrmate gas) before the anode reaction. Recombined gas hydrogen production technology has been developed for a long time and is widely used in industry. In addition to the high concentration of hydrogen produced by the recombined gas, 1 there are some reaction products, such as water, carbon dioxide, carbon monoxide and residual fuel, etc. It only requires the hydrogen concentration to reach the standard, and does not care about other gas components, but it is used in fuel cell technology because the electrode material of the membrane electrode group is often platinum (Pt) or platinum alloy, and carbon monoxide is easily adsorbed on it.
1220804 五、發明說明（2) 其毒化而降低觸媒活性，必須盡量降低甚至去除一氧化碳之 成分，以免破壞電極觸媒，因此工業用之重組器需加以改 良，才能符合燃料電池需求。 重組器係由多段觸媒所組成，反應流體依序經過蒸氣重 組反應（Steam Reforming, SR)或ATR 重組反應（Autotherma 1 Reforming，ATR)、水移反應（Water Gas Shift，WGS)以及選 擇性氧化反應（Preferential Oxidation Reactor，Pr〇}〇， 逐步產生氫氣，同時降低一氧化碳濃度，為了得到良好的觸 媒反應效果，各段觸媒床需維持在適當的操作溫度，且在選 擇性氧化反應段加入的氧氣（空氣），需與反應流體均勻混 合0 【内容】 a 、，發明之主要目的，在於提供燃料電池之重組氣體與空 氣或氧氣達到均勻混合之效果。 ’、 其包含有：複數個導流元 方式父錯排列，而重組氣體與 且相互作用。利用導流元件使 效0 件，該導流元件以非同一平面 空氣或氧氣通過該導流元件並 氣流分散，以達均勻化合之 電極組（白 本發明之另一目的，在於延長燃料電池之膜 金或白金合金）的使用壽命。 由於重組氣體中之一氧化碳 “體與空氣或氧氣無法達到均勾化合匕， -乳化碳’使膜電極組之使用壽命降低。丨一κ低或消b 本發明之又一目的，在於提供燃料之 至、、’且虱體與^1220804 V. Description of the invention (2) Its poisoning reduces the catalyst activity. It is necessary to reduce or even remove the carbon monoxide components to avoid damaging the electrode catalyst. Therefore, the industrial recombiner needs to be improved to meet the requirements of fuel cells. The reformer is composed of multiple stages of catalysts. The reaction fluid sequentially undergoes steam reforming (SR) or ATR reforming (Autotherma 1 Reforming (ATR)), water shift (Water Gas Shift, WGS), and selective oxidation. The reaction (Preferential Oxidation Reactor, Pr0), gradually produces hydrogen, while reducing the concentration of carbon monoxide. In order to obtain a good catalyst reaction effect, the catalyst bed in each stage must be maintained at an appropriate operating temperature, and added in the selective oxidation reaction stage The oxygen (air) needs to be uniformly mixed with the reaction fluid. [Content] a. The main purpose of the invention is to provide the fuel cell's reconstituted gas and air or oxygen to achieve a uniform mixing effect. ', It includes: a plurality of guides The flow elements are arranged in the wrong way, and the recombined gas interacts and interacts with each other. The flow guiding element is used to effect 0 pieces. The flow guiding element passes through the flow guiding element with non-same plane air or oxygen and the airflow is dispersed to achieve a uniformly combined electrode. Group (another purpose of the present invention is to extend the life of the film gold or platinum alloy of the fuel cell) As one of the carbon oxides in the recombined gas "the body and air or oxygen cannot reach a homogeneous combination, -emulsified carbon 'reduces the service life of the membrane electrode group. 丨 a κ is low or eliminatedb Another object of the present invention is to provide fuel Zhi ,,, and lice body and ^
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氣或氧氣達到均溫效果。 由於注入之空氣或氧氣與重組氣體之溫度相差極大， 發明所提供的混合單元，可使空氣或氧氣與重組氣體 溫效果，有助於選擇性氧化。 彳句 【實施方法】 有關本發明之詳細說明及技術内容，現就配合圖、 如下·· 口式祝明 請蒼閱「第1圖」所示，將燃料電池陽極之燃料丨〇加入 重組裔1中’首先該燃料1 0進入重組器1後，先發生水移反應 2〇，接著進入到混合單元3〇中，此時通入空氣（氧氣^ 混合單元30將重組器1中垂直流動的重組氣體5〇與空氣（氧/ 氣）2 0 ’轉換為水平流動，並於混合單元3 〇中將該重組氣體 50與空氣（氧氣）2〇充分混合，再進行第一次選擇性氣化， 之後再通過混合單元3 〇 a後，進行第二次選擇性氧化7 〇，此 時’重組氣體5 0 a經由出口 8 0送出重組器1外。 請參閱「第2，3圖」，混合單元3 0 (請參閱第1圖），包含 複數個導流元件31，該導流元件31係為一板片態樣，並=二 同一平面方式排列，且採用類似魚鱗片的方式而配置於上蓋 體32與下蓋體33内側（請搭配參閱第6圖），當重組氣體5〇與 空氣（_氧氣）4 0之氣流開始通過導流元件3 1時，先被分成多 道小氣流（如箭頭所示），小氣流延導流元件31方向流77動，^ 與另一道小氣流結合成同一道氣流，重複此步驟，當氣苄多 次衝擊、結合、分離後，可以將重組氣體5〇與空氣^ 充分擴散，提高氣流混合度，以達到良好的混合效果。Gas or oxygen achieves a uniform temperature effect. Because the temperature of the injected air or oxygen and the recombined gas is extremely different, the mixing unit provided by the invention can make the temperature of the air or oxygen and the recombined gas warm, and help the selective oxidation. Haiku [implementation method] For the detailed description and technical content of the present invention, we will now cooperate with the diagram as follows: · Oral wishes, please read the "Figure 1", add fuel to the anode of the fuel cell 1 in the 'first' the fuel 10 enters the reformer 1 first, a water shift reaction 20 occurs, and then enters the mixing unit 30, at which time air (oxygen ^ mixing unit 30 flows the vertical flow in the reformer 1). The reformed gas 50 and air (oxygen / gas) 20 'are converted into a horizontal flow, and the reformed gas 50 and air (oxygen) 20 are thoroughly mixed in the mixing unit 30, and then the first selective gasification is performed. Then, after passing through the mixing unit 30a, the second selective oxidation 7o is performed, at which time the 'recombined gas 50a is sent out of the reformer 1 through the outlet 80. Please refer to "Figures 2 and 3" and mix Unit 30 (see Figure 1) includes a plurality of flow guiding elements 31. The flow guiding elements 31 are in the form of a plate and are arranged in the same planar manner, and are arranged in a manner similar to fish scales. The upper cover 32 and the lower cover 33 are inside (see Figure 6), when the flow of recombined gas 50 and air (_ oxygen) 40 begins to pass through the guide element 31, it is first divided into multiple small air streams (as shown by the arrows), and the small air stream extends in the direction of the guide element 31 Flow 77 moves, ^ combined with another small air flow to form the same air flow, repeat this step. After the gas benzine is impinged, combined, and separated multiple times, the recombined gas 50 and the air ^ can be fully diffused to improve the air flow mixing degree. To achieve a good mixing effect.
1220804 五、發明說明（4) 请參閱「第4，5圖」，混合單元3 〇可變化為將導流元件 31b以相互交錯的方式環繞於至少一固定部34表面，又該固 定部34可為桿件，並連接於該混合單元3〇内，本實施例與前 述功能相同，皆利用複數個非為同一平面上之導流元件 31 b，將氣流多次衝擊、結合、分離，以將重組氣體5 〇與空 氣（氧氣）40充分衡散（如第1圖所示），達到良好的混合效 果。而「第5圖」4導流元件31c之另一實施例，該導流元件 3 1 c係為一具孔洞結構之網狀物，例如為金屬網，此種導流 元件3 1 c亦可充分將氣流擴散，達到充分混合。 請參閱「第6，7圖」，混合單元3 〇之氣流流向如圖中箭 頭所示，當重組|體50與空氣（氧氣）4〇由華直向進入混合單 元30後，該重組氣體50與空氣（氧氣）40轉成水平方向，在通 過導流元件3 1後，再垂直導出混合單元3 〇中；另外，混合單 元中更可以增加至少一隔板3 5，隔板3 5表面更具有複數個導 流元件3 1 (圖中未示），且該隔板3 5延長該混合單元3 〇中，重 組氣體50與空氣（氧氣）40的流動距離，並控制流動方向。 惟以上所述者，僅為本發明之較佳實施例而已，當不能 以之限定本發明實施之範圍，即大凡依本發明申請專利範圍 所作之均等變化與修飾，皆應仍屬本發明專利涵蓋之範圍 内01220804 V. Description of the invention (4) Please refer to "Figures 4 and 5". The mixing unit 30 can be changed to surround the surface of at least one fixing portion 34 in a staggered manner, and the fixing portion 34 can It is a rod and is connected to the mixing unit 30. This embodiment has the same function as the foregoing, and uses a plurality of non-coordinated flow guiding elements 31 b to impinge, combine, and separate the airflow multiple times to The reconstituted gas 50 and air (oxygen) 40 are sufficiently balanced (as shown in Fig. 1) to achieve a good mixing effect. In another embodiment of the "figure 5" 4 flow guiding element 31c, the flow guiding element 3 1 c is a mesh with a hole structure, such as a metal mesh. Such a flow guiding element 3 1 c may also be used. The air flow is fully diffused to achieve sufficient mixing. Please refer to "Figures 6 and 7". The airflow direction of the mixing unit 30 is shown by the arrow in the figure. When the recombination | body 50 and air (oxygen) 40 enter the mixing unit 30 from China straight, the recombined gas 50 and The air (oxygen) 40 is turned into a horizontal direction, and after passing through the flow guiding element 31, it is vertically led out of the mixing unit 30; in addition, at least one partition plate 3 5 can be added to the mixing unit, and the surface of the partition plate 3 5 has A plurality of flow guiding elements 3 1 (not shown), and the partition plate 3 5 extends the flow distance of the recombined gas 50 and the air (oxygen) 40 in the mixing unit 30, and controls the flow direction. However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited, that is, all equal changes and modifications made in accordance with the scope of the patent application of the present invention shall still belong to the patent of the present invention. Covered 0
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rL 第第第第第第第 圖 意 示 。體 圖立 程觀. 流外 作例 工施 之實 器 一 組第 重之 1J 彳明明 日务务 說、、 卑係係 弓簡 明 ， ， 說式 單 — 圖圖 簡 圖 圖圖 圖圖圖 圖 。 。體圖 圖立意 面觀示 平外面 例之平 施例之 實施件 一 實元 第二流 之第導 明明明 發發發 4^· 4^* 係係係 圖圖 立思立思 示示 流流 流流 氣氣 之之 ΪΠΊ ΪΗΊ 施施 實實三四 第第 明明 發發 本本 係係 明 說 號 符 式 圖 重 器 10.............燃料 20 · · ...........水移反應 3 0、3 0 a...........混合單元 3 1、3 1 b、3 1 c........導流元件 32 .............上蓋體 33 .............下蓋體 34 .............固定部 35 .............隔板 40.............空氣（氧氣） 籲 50、50a...........重組氣體 60.............第一次選擇性氧化 70.............第二次選擇性氧化 80.............出口 90.............觸媒rL 第 第 第 第 第 图 图 means. The concept of the physical plan and the concept of the process. The out-of-the-box example of the construction implements is the first one in the group. . The body diagram figure shows the implementation of the flat example of the flat case. The first element of the second class is clearly issued. 4 ^ · 4 ^ * is the figure of the figure.气 之 之流 气 气 ΪΠΊ ΪΗΊ Shi Shishi No. 3 of the 4th issue of this book is clearly a symbolic figure weight device 10 ............. Fuel 20 · · ..... ...... Water shift reaction 3 0, 3 0 a ......... Mixing unit 3 1, 3 1 b, 3 1 c ..... Flow guiding element 32 ............. Upper cover body 33 ............. Lower cover body 34 ............. Fixing portion 35. ............ Baffle 40 ............. Air (oxygen) 50, 50a .............. Reassembled gas 60 ............. First selective oxidation 70 ............. Second selective oxidation 80 ............. ... Export 90 ............. Catalyst
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