TW308609B - - Google Patents

Description

Α.7 Β7 «08609 五、發明説明（） 本發明像關於在爐，特別是電弧爐中藉由供給填料熔 合能Μ熔化填料之方法，其中氣體及顯著地至少一種可燃 氣體，特別是一氧化碳在熔化填料之過程中產生，於該方法 中，在至少某段時間内注入含有多於2 5 5S體積比之氧之氧化 劑氣體Κ進行可燃氣體之後燃燒。 ”含有多於25%體積比之氧之氧化劑氣體”一詞表示在標 準溫度及壓力條件下含有至少25χ體積比之氧之氣體，特別 是較佳含有多於50¾體積比之富含氧之空氣，但更佳為工業 用純氧，亦即含至少8 8 %體積比之氧，包括特別是藉由 VS A (真空開關吸附）型式之吸附設備或任一其他工業用純氧 之產生器，包括使用膜之***所產生之氣。 電弧爐，特別是熔化碎履之電弧爐中親察鋼之製造， 碎屑基本上藉由經爐之石墨電極供給熔合能至進料而熔化 ，非常強之電流通過該電極而使存在於該爐之碎屑熔化。 目前礦物能越來越常用K增加此等爐之生產力。因此 ，使用於籃中進料或經矛叉（lance)注人之煤使礦物能可被 使用。然而，只要煤之燃燒不完全，此能僅部份使用。因 此，碳氧化本身釋出大量一氧化碳（C 0 )。此一氧化碳根》 用於電弧爐之所稱後燃燒之方法與爐中之氧燃馍及揭述於 如 US-5，166,950、1]3-5,373,530與£?'4-127,492專利中。 專利US 5,166,950(M申請人公司之名）揭述於熔化碎 屑及製網用之電弧爐中藉由供給熔合能至填料及藉由注入 含氧氣體至填料上方之爐之空間進行煙氣之後燃燒之熔化 本紙張尺度適用中國國家標準·（ CNS ) Α4規格（210X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 丄 經濟部中央標牟局員工消費合作社印製 Μ ?〇86ft9 B7 經濟部中央標準局負工消费合作社印製 五、發明説明（>/) 填料之方法與裝置。上述方法中’氧注人器用以造成氣 流在填料上方之爐之空間中W相反方向旋轉°此效果為確 保含氧之氧化劑氣體與存在之可燃氣如填料所產生之一氧 化碳及/氫有效混合以產生此等氣髓在爐中均勻之後燃燒 ，該後燃燒與分佈於爐垂直軸周圍與鄰近豎立之電極—起 有肋於此填料之熔化° 專利 ϋ S 5 , 3 7 3 , 5 3 (Η Μ 及 E P - A - 1 2 7 , 4 9 2 )掲述一含氧氣 體注入器，其通過爐之套管以傳輸含氧之氣體氣流，該氣 流相對於爐蚰為非幅射狀。電弧爐用之後燃燒方法亦自P. Mathui·及 G. Daughtri dge 所寫之文章"Oxygen Injection for Effective P o s t - C o in b u s t i ο n in the Electrical Arc Furnace”得知，此方法以超音速（通常大於300公尺/秒）使 用於熔池（pool)上方注入氧*其中氧敲擊熔融金臑熔池（熔 渣）之表面，其造成饑氧化成氧化鐵FeO之形式，鐵與存在 之二氧化碳之氧化，產生氧化撖FeO、一氧化碳以及碳與二 氧化碳之反懕Μ產生一氧化碳。此超音氧注入因而產生含 二氧化碳氣體量及一氧化碳量之氣體混合物，其顯然自上 述反應產生。因此，如此方法之缺點為其無法完全藉由使' 用爐所製得之一氧化碳產生能最。 根據本發明之方法之目的為改菩後燃燒之能量效率， 藉由使此後燃燒所釋出之能量及對應能量至金騸熔池之 轉移二者最大化，同時確保爐耐熔襯裡之高持久性而無電 極之過度氧化。為達此目的，根據本發明之方法儘可能促 -卜 本紙張·尺度適用中國國家標準（CNS ) Α4規格（210Χ 297公釐） (請先閱讀背面之注意事項再填寫本頁) Λ 訂 經濟部中央揉準局貝工消费合作社印製 五、發明説明（、） 進一氧化碳與氧之反懕Μ形成二氧化碳，損害其他不欲之 反應，特別是包含鐵與氧反應（Fe + 1/2 02 -> FeO)M及 二氧化碳氣體與鐵反懕（COz + Fe -> FeO +C0)之反應。 根據本發明於燫中熔化填料之方法之特徴在於進行後 燃燒之時，氧化劑氣體Μ至少一氧化劑氣體氣流之形式低 速注入填料上，各氣流具流速約5與ldOONm3 /h間及注入 爐之速度約5 m / s與1 5 Q in / s間及較佳5 0 m / s與1 2 5«n / s間。 本發明之較佳具體例中，其中爐為電弧爐，根據本發 明之方法之特激在於各可燃氣體氣流之注入方向實質上與 弧煙產生之主要氣體流一致，較佳Μ對流方式。 根據本發明之另一具體例，方法之特徴在於提供氧化 劑氣髓注入至爐之保持流速，至少在爐中不產生後燃燒之 某段時間，速度約5m/s與20 m/s間以防止或降低任一氧 化劑氣體注入器之填塞。 根據本發明之另一具體例，方法之特徵在於至少一氧 化劑氣體氣流K相對於爐壁之切線方向注入，角度於25〇 與4 0°間，較佳約30ΰ 。 根據本發明之另一具通例，後者之特徵在於至少一氯 化劑氣體氣流自爐之側壁向下注人，角度相對於水平方向 約1 Q °與2 0 °間，較佳約1 5 ° 。 亦較佳，氧化劑氣髓使用至少三個注入器，較佳至少 四個注人器注入，較佳均勻分佈在爐之後側表面。然而， 爐中存有所需空間時，較佳提供儘可能多之注入器，例如 -5- 本紙張尺度逋用中國國家榡隼（CNS ) Α4规格（210Χ297公釐） ---------f .衣-- (請先閱讀背面之注意事項再填寫本頁) 、-ιτ 經濟部中央揉準局貞工消费合作社印製 A7 B7 五、發明説明（+) 六或甚至八個注入器。 各氧化劑氣體氣流較佳具流速約8 0與8 5 0 N m3 / h間及 注入器出口速度約5 Q與1 2 5 m / s，較佳約1 0 0 in / s。 較佳•來自燫之煙氣經埋讀分析及氧化劑氣體流速經 調整為此分析之结果之函數。此表示若存在較多之可燃氣 體，同漾地更多之氧被注入，但Μ階梯式氧注人以限制注 入器鄰近地區之溫度至與爐側嵌板（分佈於爐所有周遭之經 水冷卻之嵌板）之熱安定性相容之值。因而氧化劑氣體流速 在鑲造時常為變數。 煙氣分析較佳在於煙氣中一氧化碳濃度之測量（例如 :4¾ C0體積比）。 較佳，利用多個注入器組，其在出口具有相對於爐垂 直軸圼切線方向之組件*埋續組之注入器安排為相同層级 或不同層级。 根據本發明之另一具體例，爐中之保持流速亦可Μ空 氣產生。 亦可能，及有時較佳在將氧化劑氣體注人爐中前將其 預熱。為達此目的，可能藉由如與爐間接熱交換將較佳含 有多於25¾體積比之氣氣之氧化劑氣體預熱。亦可能在將 至少一部份離開埔之煙氣與氧化劑氣體二者注入遽中前’ 先將該等混合。此情況下，氧化劑氣體（煙氣+氧化劑氣髓 混合）可含有少於2 5 X體積比，及甚至少於2 U艟積比之氧。 至於注入器之數目’較佳使用至少六個注入器’因為 -6 - 本紙張尺度適用中國國家樣準（CNS ) A4规格（210X297公釐） ---------f π------ir------{ (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標隼局負工消費合作杜印裝 A7 B7 五、'、餐明説明（f ) ί吏$ @多注人器，结果愈佳為通則。此等注入器亦較佳所 之上半部及更佳，在相對於金靨層级之爐上半 部。 $ ϋ «助下列說明性具體例（但不暗示任一限制）與 下列圖示作近一步了解，其中： -圖1表示S施本發明用電燫之垂直部份之略圖， -圈2表示沿画1中線π _丨丨之水平面所取之略圈， -ffl3表示較大規攢之爐之氧注入器縱面略圖， -圖4表示爐之平面略圖， -_5表示先前技藝之燃燒與本發明之比較略圖， -ϋ 6表示特定電消耗呈特定氧消耗函數之曲線，其將使用 之注人器數目列入考應，及 7表示藉由一氧化碳之調整在二階段層级間注入氧之說 明性具歷例。 圖1與2表示之電弧爐意欲用於熔化碎屑W製造鋦。其 包括底部2’具所謂之熔渣門4之側壁3與熔融產物用之傾注 口 5M及亦形成三個電極7、8、9 (於垂直軸X-X周团平等分 佈）之撐體之脊6。該脊包括煙氣之出口導管。 ' 埔1装配有至少二個階梯式糸列（分別是11與12)之至少 二涸，典型至少三個含氧氣體用之注入器。第一系列之注 人器11位於靠近底部2之最低點2’與脊6之最高點6’間之一 半高之層级N i ，而第二糸列之注入器1 2位於代表約此相同 高度Η約3/4之層级N2 。因而注入器1 1與12分別位於二階梯 -7- 本紙張尺度適用中國國家標準（CNS ) A4规格（21〇><297公釐） ---------衣— (請先閱讀背面之注意事項再填寫本頁) 訂Α.7 Β7 «08609 V. Description of the invention () The present invention relates to a method for melting a filler by supplying a filler fusion energy M in a furnace, especially an electric arc furnace, wherein the gas and notably at least one combustible gas, especially carbon monoxide, Produced during the melting of the filler. In this method, at least a certain period of time, an oxidant gas K containing oxygen in a volume ratio of more than 255 S is injected for combustible gas combustion. The term "oxidant gas containing more than 25% by volume of oxygen" means a gas containing at least 25χ volume ratio of oxygen under standard temperature and pressure conditions, especially preferably containing more than 50¾ volume ratio of oxygen-enriched air , But it is more preferably pure oxygen for industrial use, that is, containing at least 88% by volume of oxygen, including especially by VSA (vacuum switch adsorption) type adsorption equipment or any other industrial pure oxygen generator, Including gas generated by systems using membranes. The electric arc furnace, especially the manufacturing of steel in the electric arc furnace for melting and crushing shoes, the debris is basically melted by supplying fusion energy to the feed through the graphite electrode of the furnace, and a very strong current passes through the electrode to be present in the The crumbs of the furnace melted. At present, minerals can be more and more commonly used to increase the productivity of these furnaces. Therefore, the coal used for feeding in the basket or injected through the lance makes the minerals usable. However, as long as the combustion of coal is not complete, this energy can only be partially used. Therefore, carbon oxidation itself releases a large amount of carbon monoxide (C 0). This carbon monoxide root is used in the so-called post-combustion method of the electric arc furnace and the oxy-fuel burner in the furnace and is disclosed in patents such as US-5,166,950, 1] 3-5,373,530 and £? 4-127,492. Patent US 5,166,950 (the name of the applicant company) discloses in the electric arc furnace for melting debris and mesh making by supplying fusion energy to the filler and by injecting oxygen-containing gas into the furnace space above the filler for flue gas Burning and melting this paper standard is applicable to China National Standard (CNS) Α4 specification (210X 297mm) (please read the notes on the back before filling this page). Printed by the Employee Consumer Cooperative of the Central Bureau of Standards and Technology, Ministry of Economic Affairs. 86ft9 B7 Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Consumer Cooperative. V. Description of invention (> /) Filling method and device. In the above method, the oxygen injector is used to cause the gas flow to rotate in the opposite direction in the space of the furnace above the packing. This effect is to ensure that the oxygen-containing oxidant gas is effectively mixed with the existing combustible gas such as carbon monoxide and hydrogen produced by the packing The gas pulverized in the furnace is evenly combusted in the furnace. The post-combustion and the electrode distributed around the vertical axis of the furnace and the adjacent upright electrode-ribbed to the melting of the filler ° Patent ϋ S 5, 3 7 3, 5 3 (Η Μ and EP-A-1 2 7, 4 9 2) An oxygen-containing gas injector is described, which transmits a gas flow of oxygen-containing gas through the casing of the furnace, and the gas flow is non-radiative with respect to the furnace larva. The post-combustion method of the electric arc furnace is also known from the article "Oxygen Injection for Effective P ost-C o in busti ο n in the Electrical Arc Furnace" written by P. Mathui · and G. Daughtri dge. This method uses supersonic speed (Usually greater than 300 m / s) Use to inject oxygen above the pool * where oxygen strikes the surface of the molten metal pool (slag), which causes hunger oxidation to form iron oxide FeO, iron and presence The oxidation of carbon dioxide produces FeO, carbon monoxide, and the reaction of carbon and carbon dioxide to produce carbon monoxide. This supersonic oxygen injection thus produces a gas mixture containing carbon dioxide gas and carbon monoxide, which obviously arises from the above reaction. Therefore, The disadvantage of the method is that it cannot be produced completely by using one of the carbon monoxide produced by the furnace. The purpose of the method according to the present invention is to improve the energy efficiency of post-combustion, by making the energy released after combustion and the corresponding The transfer of energy to the gold gel pool is maximized, while ensuring high durability of the refractory lining of the furnace without excessive oxidation of the electrodes. Yes, according to the method of the present invention, as much as possible-Buben paper · The standard is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ 297 mm) (please read the precautions on the back before filling out this page) Printed by the Quasi-Bureau Pongong Consumer Cooperative V. Description of the invention (,) The reaction between carbon monoxide and oxygen forms carbon dioxide, which damages other undesirable reactions, especially including the reaction of iron with oxygen (Fe + 1/2 02-> The reaction of FeO) M and carbon dioxide gas with iron inversion (COz + Fe-> FeO + C0). The special feature of the method for melting the filler in the pyrolysis according to the present invention is that during post-combustion, the oxidant gas M is at least one oxidant gas The form of air flow is injected into the packing at a low speed. Each air flow has a flow rate of about 5 and ldOONm3 / h and the speed of the injection furnace is about 5 m / s and 1 5 Q in / s and preferably 50 m / s and 1 2 5 « n / s. In a preferred embodiment of the present invention, wherein the furnace is an electric arc furnace, the special feature of the method according to the present invention is that the injection direction of each combustible gas flow is substantially the same as the main gas flow generated by the arc smoke, preferably ΜConvection mode. According to the invention Another specific example, the special feature of the method is to provide the oxidant gas injection into the furnace to maintain the flow rate, at least for a certain period of time after the furnace does not produce post-combustion, the speed is between about 5 m / s and 20 m / s to prevent or reduce any Packing of an oxidant gas injector. According to another embodiment of the invention, the method is characterized in that at least one oxidant gas flow K is injected relative to the tangential direction of the furnace wall at an angle between 25 ° and 40 °, preferably about 30ΰ . According to another general embodiment of the present invention, the latter is characterized in that at least one chlorinating agent gas stream is injected downward from the side wall of the furnace at an angle between about 1 Q ° and 20 ° relative to the horizontal, preferably about 15 ° . It is also preferred that the oxidant gas marrow is injected using at least three injectors, preferably at least four injectors, preferably evenly distributed on the side surface behind the furnace. However, when there is space required in the furnace, it is better to provide as many injectors as possible. For example, -5- This paper standard uses the Chinese National Falcon (CNS) Α4 specification (210Χ297 mm) ------ --- f .clothing-- (please read the precautions on the back before filling in this page), -ιτ A7 B7 printed by the Zhengong Consumer Cooperative of the Central Bureau of Economic Development of the Ministry of Economic Affairs 5. Invention description (+) Six or even eight Injector. Each oxidant gas flow preferably has a flow rate between about 80 and 8 50 N m3 / h and an injector exit speed of about 5 Q and 1 25 m / s, preferably about 100 in / s. Better • The flue gas from Xie is analyzed by buried reading and the oxidant gas flow rate is adjusted as a function of the result of this analysis. This means that if there are more flammable gases, more oxygen will be injected, but M stepped oxygen injection will limit the temperature in the vicinity of the injector to the furnace side panel (distributed in all the surrounding water of the furnace Cooling panel) thermal stability compatible value. Therefore, the flow rate of the oxidant gas is often variable during mounting. The flue gas analysis is preferably based on the measurement of the concentration of carbon monoxide in the flue gas (for example: 4¾ C0 volume ratio). Preferably, multiple injector groups are used, which have components at the outlet with respect to the tangential direction of the vertical axis of the furnace * The injectors of the buried group are arranged at the same level or at different levels. According to another embodiment of the present invention, the maintained flow rate in the furnace can also be generated by air. It is also possible, and sometimes preferred, to preheat the oxidant gas before it is injected into the furnace. To achieve this, it is possible to preheat the oxidant gas preferably containing more than 25¾ volume ratio of gas by indirect heat exchange with the furnace. It is also possible to mix these at least part of the flue gas and oxidant gas leaving Po before they are injected into the Yun ’. In this case, the oxidant gas (mixture of flue gas and oxidant gas) can contain less than 25 X volume ratio, and even less than 2 U stoichiometric ratio of oxygen. As for the number of injectors, it is better to use at least six injectors because -6-This paper size is applicable to China National Standards (CNS) A4 specification (210X297mm) --------- f π-- ---- ir ------ {(Please read the precautions on the back before filling out this page) The Ministry of Economic Affairs, Central Standard Falcon Bureau, Negative Work Consumer Cooperation Du Printed A7 B7 Five, ', meal instructions (f) ίLi $$ @ 多 注 人 器, the better the result is the general rule. These injectors are also preferably in the upper half and better, in the upper half of the furnace relative to the level of gold. $ ϋ «Help the following illustrative specific examples (but do not imply any limitations) and the following diagrams for a closer understanding, among them:-Figure 1 shows the outline of the vertical part of the electric appliance used in the present invention,-Circle 2 shows The circle taken along the horizontal plane of π _ 丨 丨 in the middle of drawing 1, -ffl3 represents the longitudinal sketch of the oxygen injector of the larger furnace, -Fig. 4 represents the sketch of the furnace, -_5 represents the combustion and Comparison diagram of the present invention,-ϋ 6 indicates that the specific electricity consumption is a curve of a specific oxygen consumption function, which takes into account the number of injectors used, and 7 indicates that oxygen is injected between the two stages by adjusting the carbon monoxide Descriptive examples. The electric arc furnace shown in Figs. 1 and 2 is intended to be used for melting scrap W to make tungsten. It includes the bottom 2 'with the side wall 3 of the so-called slag door 4 and the pouring port 5M for the molten product and the ridge 6 of the support body that also forms three electrodes 7, 8, 9 (equally distributed on the vertical axis XX perimeter) . The ridge includes an outlet duct for smoke. 'Pu 1 is equipped with at least two ladders (11 and 12 respectively) of at least two steamers, typically at least three oxygen-containing gas injectors. The first series of injectors 11 is located at a half-height level Ni between the lowest point 2 'of the bottom 2 and the highest point 6' of the ridge 6, and the injector 1 2 of the second row represents approximately the same Level N2 with a height H of about 3/4. Therefore, the injectors 1 1 and 12 are located in the second ladder-7- This paper scale is applicable to the Chinese National Standard (CNS) A4 specifications (21〇 > < 297mm) --------- clothing— (please Read the precautions on the back before filling out this page)

經濟部中央標準局具工消費合作社印製 五、發明説明（g) 式水平面，其間之垂直隔間為最大脊高度Η之1/4。各注入 器以具有主要切線方向之組件與向心幅射狀組件之方式定 位。較低系列之注人器η(在層级=Η/2)之所有出口自上 往下鳥瞰係Μ逆時鐘方向定位Μ形成具逆時鐘旋轉循環之 較低氣體流（圖2)。較高系列之注入器12(在層级h =3H/4) 之所有出口自上往下鳥瞰係Μ順時鐘方向定位W形成具順 時鐘旋轉循環之較高氣體流。 經各配備有各調整組件15之管路14自源13(圖2)供給含 純度至少90¾之氧至注入器。 爐亦包括煙氣中一氧化碳（CO)含量之分析器16’該煙 氣經管路1 0排放及此分析器具有控制組件1 5M調整至注入 器11與12之供給圼實際上連續讀取之測量值之函數之手段。 參照圖3，其顯示任一注入器11與12，如注入器II包含 通過爐壁3厚度安置之頭U及具有實質上圓柱形氣體通道之 軸18，其對軸19傾斜角度α ，軸19相對於圖1所畫之爐垂直 軸Χ-Χ圼幅射狀。 頭17在一般為圓柱體2G之端形成，當注入器裝置在爐 上時，該軸與軸U相合，此髖藉由氣體通道而成空心’該 通道延伸通過頭之軸18之一，該體因而自爐壁3之外表面 21伸出，該壁藉由圖2概要表示之撐艚结構22經習知地支撐 0 注入器之通2Q經裝置Κ在帶有撐艘軸承23的軸19旋轉 ，亦概略表示於此圈中。作旋轉調整時，根據爐之特點’ -8- 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X29"?公釐） ^^^1 amt —HI— Bm -4彳 i (請先閱讀背面之注意事項再填寫本頁) Α7 Β7 3^ϋέ||； 308609 五、發明説明（q ) 注入器之位置藉附熔填充材24固定，該材置於頭17與接受 其之壁3之圓柱開口 25間。無關調整’頭17之前面26與壁3 (請先閲讀背面之注意事項再填寫本頁) 之内面27實質上同高。 圖3亦表示循環冷卻液如冷水之管路28。如此注人器之 其他特徴與優點揭述於E P - A - 1 2 7 , 4 9 2 ( Μ申請人公司之名 )0 含固定之校準小開口 30之隔膜29裝置於在骽20後端之 埋頭鑽3 1上及供給管路1 4連接至此装置。注人器之外徑亦 固定且遠大於小開口 3 Q。其介於約3與6公分間及較佳近5公 分0 又，如上述歐洲專利中，管路14之前端可配備有保護 性無回流之閥（未表示）。 操作間，進行交替之進料/鏑造及熔化步驟。各步驟中 ，分析器16比較煙氣中CO瀠度與低設定值並據此調整至注 入器之供給。 經濟部中央樣準局貝工消費合作社印製 整個操作過程中，每一注入器之氧流速保持在約50與 l,2 0 0 Nm3 /h間（INn3 /h為摞準溫度及壓力條件下之in3 )，及氧出口速度（考應注入器之尺寸及實筲上為大氣壓之' 出口壓力）介於約5與15018/s間。每一注入器之較佳值範圍 為10Q至90 0 Nm3 /h及出口速度之較佳值範圍為15至 1 2 5 in / s 間。 若每一注入器之流速超過約l，2Q0Nm3 /h時，有組成爐 壁3之附熔板快速毀壊之高風瞼，及/或至少一電極及/或金 -9 * 本紙张尺度適I中國國家橾準（CNS〉A4規格（210X 297公釐^~~"" 經濟部中央橾準局負工消費合作社印装 «〇8β〇9 μ B7 五、發明説明（γ) 屬熔池之氧化° g s察到使用如此參數組合，特定氧消耗之特定電力 消耗特別低° 已由試驗（W圖1至3所說明之85噸容量型式之爐進行 )確認，其具六個外徑5 0 10 m之注人器’ ®@ ’流動時2期 間每—注入器之最大流速7QGNn3 /h(顯示在調整裝置16上 )及最小注入器保護流速約5G至7GNib3 /h° 使用實質上相同特定氧消耗之此爐電消耗經證明供 給所有注入器時逭較供给六個注入器之四個為低°此證明 氧氣流之注入器出口速度降低時’後燃燒效能被改菩。 圖4表示具爐中氣歷流略圓表示之弧爐之平面略圖。爐 40包括三個通過爐脊之電極41、42與43，及氣髑可經其逃 逸。空氣基本上經開口 44或熔渣門進入及逃逸，及煙基本 上經”第四”孔51。熔融金屬經鑲造孔56排放。六個注入器 45、46、47、48、49與50均勻分佈在墉周圍，實質上全在 相同之水平面上。 操作期間，電極形成弧光使氣體脫雕至周遭。由箭頭 5 3略圖表示之流自中心（電極）開始，移往壁4 0，之後沿其' 持續至第四孔51。同理，由箭頭54略圔表示之流沿爐壁移 動及經第四孔5 1逃逸。經熔渣門進入之空氣5 5指向第四孔 51及流52自電極向壁以門44與孔51之方向移走。 根據本發明，氧注入器以實質上相對於煙氣之對流方 向注入氧之方式安置：注入器50與流52呈對流；48及49與氣 -1 0 _ 本紙張尺度適用中國國家標芈（CNS ) A4規格（210X297公釐) I I - I I---1、 -衣一一I (請先閱讀背面之注意事項再填寫本頁) 訂Printed by the Central Bureau of Standards of the Ministry of Economic Affairs of the Ministry of Economic Affairs and Consumers Cooperatives. 5. Description of Invention (g) horizontal plane, the vertical compartment between them is 1/4 of the maximum ridge height Η. Each injector is positioned in such a way that it has a component with a main tangential direction and a radial component. All outlets of the lower series of injectors η (at level = Η / 2) are viewed from top to bottom to locate M in a counterclockwise direction to form a lower gas flow with a counterclockwise rotating cycle (Figure 2). All outlets of the injectors 12 of the higher series (at level h = 3H / 4) are viewed from top to bottom in a clockwise direction to form a higher gas flow with a clockwise rotation cycle. Oxygen containing a purity of at least 90¾ is supplied to the injector from the source 13 (Fig. 2) via lines 14 each equipped with each adjustment module 15. The furnace also includes an analyzer 16 'for the content of carbon monoxide (CO) in the flue gas. The flue gas is discharged through the pipeline 10 and the analyzer has a control unit 15M adjusted to the supply of the injectors 11 and 12 to actually continuously measure the reading Means of function of value. Referring to FIG. 3, it shows either of the injectors 11 and 12, for example, the injector II includes a head U arranged through the thickness of the furnace wall 3 and a shaft 18 having a substantially cylindrical gas passage, which is inclined by an angle α to the shaft 19, the shaft 19 Relative to the vertical axis of the furnace drawn in Fig. 1 X-X ray shape. The head 17 is formed at the end of the generally cylindrical body 2G. When the injector is installed on the furnace, the shaft coincides with the shaft U. The hip is hollowed by a gas channel. The channel extends through one of the shafts 18 of the head The body thus protrudes from the outer surface 21 of the furnace wall 3, which is conventionally supported by the support structure 22 schematically shown in FIG. 2 0 the passage of the injector 2Q via the device K on the shaft 19 with the support bearing 23 Rotation is also outlined in this circle. When making rotation adjustments, according to the characteristics of the furnace '-8- This paper scale is applicable to the Chinese National Standard (CNS) Α4 specification (210X29 "? Mm) ^^^ 1 amt —HI— Bm -4 彳 i (please read the back first (Notes to fill in this page again) Α7 Β7 3 ^ ϋέ ||; 308609 V. Description of the invention (q) The position of the injector is fixed by a molten filler 24, which is placed on the cylinder of the head 17 and the wall 3 receiving it 25 openings. Regardless of adjustment, the inner surface 27 of the front surface 26 of the head 17 and the wall 3 (please read the precautions on the back before filling this page) are substantially the same height. Fig. 3 also shows a pipeline 28 for circulating cooling liquid such as cold water. Other features and advantages of such an injection device are disclosed in EP-A-1 2 7, 4 9 2 (name of the applicant company) 0 The diaphragm 29 with the fixed calibration small opening 30 is installed at the rear end of the mill 20 The countersink 3 1 and the supply line 14 are connected to this device. The outer diameter of the injection device is also fixed and much larger than the small opening 3 Q. It is between about 3 and 6 cm and preferably close to 5 cm. Also, as in the above-mentioned European patent, the front end of the pipeline 14 may be equipped with a protective non-return valve (not shown). In the operation room, alternate feeding / dysprosperity and melting steps are performed. In each step, the analyzer 16 compares the CO level in the flue gas with the low setting value and adjusts to the supply of the injector accordingly. During the entire operation process printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, the oxygen flow rate of each injector was maintained between about 50 and 1,200 Nm3 / h (INn3 / h is the temperature and pressure of the stack) In3), and the oxygen outlet velocity (taking into account the size of the injector and the actual outlet pressure at atmospheric pressure) is between about 5 and 15018 / s. The preferred value range for each injector is 10Q to 90 0 Nm3 / h and the preferred value range for the outlet velocity is 15 to 1 25 in / s. If the flow rate of each injector exceeds about 1, 2Q0Nm3 / h, there is a high wind eyelid that rapidly melts the attached melting plate that constitutes the furnace wall 3, and / or at least one electrode and / or gold-9 * The paper size is suitable I China National Standard (CNS) A4 specification (210X 297mm ^ ~~ " " The Ministry of Economic Affairs Central Bureau of Standards and Labor Consumer Cooperatives printed «〇8β〇9 μ B7 V. Invention description (γ) is melted Oxidation of the pool ° gs It is observed that using such a combination of parameters, the specific power consumption of specific oxygen consumption is particularly low ° has been confirmed by tests (W furnace of 85 tons capacity described in Figures 1 to 3), which has six outer diameters 5 0 10 m's injection device '® @' When flowing, the maximum flow rate of each injector during the 2 periods is 7QGNn3 / h (shown on the adjusting device 16) and the minimum injector protection flow rate is about 5G to 7GNib3 / h ° The use is substantially the same The specific oxygen consumption of this furnace is proven to be lower when supplied to all injectors than four of the six injectors. This proves that when the outlet velocity of the injectors of the oxygen flow is reduced, the post-combustion efficiency is changed. Figure 4 shows A sketch plan of an arc furnace with a gas circle in the furnace. The furnace 40 includes three The electrodes 41, 42 and 43 passing through the ridge and gas trap can escape through it. Air basically enters and escapes through the opening 44 or the slag door, and smoke basically passes through the "fourth" hole 51. The molten metal is inlaid The hole 56 is discharged. The six injectors 45, 46, 47, 48, 49, and 50 are evenly distributed around the base, substantially all on the same horizontal plane. During operation, the electrode forms an arc to engrave the gas to the surrounding area. By arrow 5 3 The flow shown in the sketch starts from the center (electrode), moves to the wall 40, and then continues along the fourth hole 51. Similarly, the flow indicated by arrow 54 moves along the furnace wall and passes through the fourth hole 5 1. Escape. Air entering through the slag door 5 is directed to the fourth hole 51 and the flow 52 is removed from the electrode to the wall in the direction of the door 44 and the hole 51. According to the present invention, the oxygen injector is substantially opposite to the flue gas. The arrangement of oxygen injection in the convection direction: the injector 50 and the flow 52 are convection; 48 and 49 and the gas -1 0 _ This paper scale is applicable to the Chinese national standard (CNS) A4 specification (210X297 mm) II-I I-- -1,-Yiyiyi I (Please read the precautions on the back before filling out this page)

經濟部中央標準局貝工消費合作社印製 五、發明説明（9 ) 體流53圼對流；46及47與流54呈對流；及45與氣體流55圼對 流。 圖5為先前技藝（鼴之右手部份）與本發明（圖之左手部 份）之比較性說明。根據先前技藝’指向金靥溶池上方之 溶渣61表面之氧吹管Uance)73M高（超音）速經爐62中氣體 /煙氣注入氧。 因其高速，氧與熔融鋼接觸及發生下列反應：Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (9) Convection of 53 ° for body flow; 46 and 47 for convection with flow 54; and 45 for convection with gas flow 55. Figure 5 is a comparative illustration of the prior art (the right hand part of the mole) and the present invention (the left hand part of the figure). According to the previous technique, the oxygen blowpipe (Uance) 73M directed to the surface of the molten slag 61 above the gold bath is injected with oxygen through the gas / flue gas in the furnace 62 at a high (supersonic) speed. Due to its high speed, oxygen comes into contact with molten steel and the following reactions occur:

Fe + 1/2 〇2 FeO 此反應為損害性的，因其消耗锇與氧形成熔渣。 撖亦與藉由一氧化碳與氧反應所形成之二氧化碳反應 。根據下反應，此二氧化碳Μ高速藉由氧與金屬熔池接觸 ，因而甚至產生更多之FeO熔渣及少量一氧化碳：Fe + 1/2 〇2 FeO This reaction is damaging because it consumes osmium and oxygen to form slag. It also reacts with carbon dioxide formed by the reaction of carbon monoxide and oxygen. According to the following reaction, this carbon dioxide M is in contact with the metal molten pool at high speed through oxygen, so even more FeO slag and a small amount of carbon monoxide are produced:

Fe + C〇2 FeO + C0 然而，所形成之co未與氧反應，因後者於他處消耗（見 上），除非注人相當大量之氧，其一部份流失。 二氧化碳亦與熔融網中之碳反應，其造成脫碳反應（其 因而為損害性的）及產生本身未燃燒之C0。 確立上述各種技術問題之存在及分析各種損害性反Μ 後，申請人公司開發本發明，其中根據本發明，氧經注入 器63以低速注入，產生氣態雲霧64，其留存在金靥熔池 之上及與自熔池進入區65之C0反懕（及僅與C0反懕）： C0 + 1/2 〇2 -> C〇2 所有由熔池產生之一氧化碳因而與氧燃燒及因而使用 _ 1 1 - 本紙張Λ度適用中國國家橾準（CNS > A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) Ί 訂Fe + C〇2 FeO + C0 However, the formed co does not react with oxygen, because the latter is consumed elsewhere (see above), unless a considerable amount of oxygen is injected, part of it is lost. Carbon dioxide also reacts with the carbon in the melting net, which causes decarbonization reactions (which are therefore destructive) and produces CO that is not itself burned. After establishing the existence of the above various technical problems and analyzing various damaging reactions, the applicant company developed the present invention, in which oxygen was injected at a low speed through the injector 63 to produce a gaseous cloud 64, which remained on the molten pool of gold and C0 inverse with the self-melting pool entry zone 65 (and only inverse with C0): C0 + 1/2 〇2-> C〇2 All the carbon monoxide produced by the molten pool is thus combusted with oxygen and thus used _ 1 1 -This paper is suitable for China National Standard (CNS & A4 specifications (210X297mm) (Please read the precautions on the back before filling this page) Ί Order

A7 B7 五、發明説明（t ϋ ) —能源上最適量之氧產生真實（放熱）之co後燃燒。 ---------f 衣-- (請先閱讀背面之注意事項再填寫本頁) 圖6表示（白圓圈）相對於使用四個注入器特定氣消耗之 特定電力消耗（kWh/t)，及（黑圓圈）相對於使用六個注入器 者，其中除注入器數目外所有其他事項均等。各圓圈表示 一薄造。顯然使用六個注入器較四個時之特定電力消竓 有大幅改善。 一般在大量薄造中有下列结果： 6個注入器 4個注入器 每一»造之〇2消耗量 (平均）Nm3 /t 45.6 44.2 平均流速（Νπ3 /h) 280 425 注入氧之速度（b/s) 40 60 霣消耗（kWh/t) 347 369 鍾濟部中央標隼局貝工消费合作社印製 圈7表示階梯式經控制之氧注入例。當煙氣中一氧化碳 含量3 4體橫；!：時，進料熔化時間之前60X將800Nm3 /h最大 -1 2 - 本紙張尺度適用中國國家樣準（CNS ) A4规格（210X 297公釐） % mm A7 B7 量之氧注人逋中。若少於4體積J：時，注人ΙΟΟΝπι3 /h之流速 。介於熔化時間之60!S與75¾間，注入量K相同方式調整介 於4 0 0 Νιβ3 /}^100Νιη3灿間，之後於介於75¾與i(](U之時， 係介於2 0 0 Nib3 /h與IOONib3 /h間。所依随之曲線1Q0K實線 經濟部中央梂牟局員工消費合作社印製 表不。根據第一變數，可能保持在介於8 G 0與1 Q G JJ m3 /小時 (沿曲線1 0 2 )之階層。亦可能自6 0至1 Q 0 之時間保持在介於 4 0 0與100Nl〇3 /小時（曲線101)間。 當然，所有注入器可調螯在栢同設定值之基準上，例 如煙氣中4體樓3；之C0，或在不同設定值（各注入器各一值或 一或多組注入器為相同值）。 比較例： 下例為根據先前技蕤之装置搡作（下稱”燃燒器PC”）及 根據本發明方法之装置操作（下稱”發明PC”）之比較。此例 顯示所產生金靨18kW/h/t之能源節省，其對於稍多於丄小時 之約10 0噸鑲造物，表示節省1，8 0 01( W/h。根據先前技術之 装置包括四個高速氧注入器（25Qin/s)，反之根據本發明之 裝置包括四個低速氧注入器（UDra/s)。二種情形下條件（下 述除外）S質相同。所得结果列示於下： ' 燃燒器PC 發明PC «消耗（kWh/t) 377 359 -13- 本紙張尺度逋用中國國家橾率（CNS > A4規格（210Χ297公釐） ---------^衣— (請先閲讀背面之注意事項再填薄本頁) 訂 9 Α7 Β7 五、發明説明Uv) 經濟部中央樣準局頁工消费合作社印製 電力供給時間（分鐘） 57.5 52.4 整個鑲造過程结!注入氧量（Nm3 /t) 33.6 37.1 後燃燒注入之氧量（Nra3 /t) 11.4 13.0 最大结!氧流速（Nm3 /h) 1,800 3,200 最大注入氧之速度（ra/s) 252 113 圖式 符號 說 明 1 爐 2 底 2 r 191 取 低 點 3 側 壁 4 熔 渣 門 5 傾 注 □ 6 脊 7 電 極 8 電 極 9 電 極 -14 f^訂 (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揉準（CNS ) A4規格（210Χ 297公釐） 3aa6〇^ : 五、發明説明（ή) I 0 管路 II 注入器 12 注入器 13 源 1 4 管路 15 控制組件 16 —氧化碳分析器 17 頭 18 軸 19 軸 2 0 _柱體 2 1 外表面 經濟部中央橾準局員工消费合作社印製 ... } ---------1 心-- (請先閱讀背面之注意事項再填寫本頁) 2 2 撐髏结構 2 3 撐趙軸承 2 4 耐熔填充材 2 5 圓柱開口 2 6 前面 2 7 内面 2 8 管路 2 9 隔膜 30 固定校準小開口 3 1 埋頭鑽 4 0 爐 -1 5- 本紙張尺度速用中國國家標準（CNS ) A4规格（210X297公釐） 經濟部中央標準局貝工消費合作社印製 mmg 鱗抑308609μ σ Β7 五、發明説明ui|) 4 1 電 極 4 2 電 極 4 3 電 極 4 4 開 P 4 5 氧 注 入 器 4 6 氧 注 入 器 4 7 氧 注 入 器 4 8 氧 注 人 器 4 9 ^β\ΐ 注 入 器 5 0 氧 注 人 器 5 1 煙 排 放 孔 5 2 流 5 3 *eat 氣 流 5 4 流 5 5 氣 流 5 6 薄 造 孔 6 0 金 靨 熔 池 6 1 熔 渣 6 2 爐 6 3 注 入 器 6 4 氣 態 雲 S 6 5 域 7 3 氧 吹 管 -16- {私 訂 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度逋用中國國家標準（CNS ) A4規格（210X29*7公釐）A7 B7 V. Description of the invention (t ϋ) —The most suitable amount of oxygen in the energy produces a real (exothermic) co-combustion. --------- f clothing-- (please read the precautions on the back before filling in this page) Figure 6 shows (white circle) the specific power consumption (kWh / t), and (black circles) relative to those using six injectors, all matters except the number of injectors are equal. Each circle represents a thin build. Obviously, the use of six injectors has greatly improved the specific power consumption when using four injectors. In general, there are the following results in a large number of thin fabrications: 6 injectors, 4 injectors, each consumption of 〇2 (average) Nm3 / t 45.6 44.2 average flow rate (Νπ3 / h) 280 425 oxygen injection rate (b / s) 40 60 霣 consumption (kWh / t) 347 369 Zhongji Ministry of Central Standard Falcon Bureau Beigong Consumer Cooperative Printed Circle 7 represents a stepped controlled oxygen injection example. When the carbon monoxide content in the flue gas is 3 4 horizontal;! ::, before the feed melting time, 60X will be 800Nm3 / h maximum -1 2-This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm)% mm A7 B7 The amount of oxygen is injected into the body. If less than 4 volumes J :, inject a flow rate of ΙΟΝπι3 / h. Between 60! S and 75¾ of the melting time, the injection amount K is adjusted in the same way between 4 0 0 Νιβ3 /} ^ 100Νιη3can, then between 75¾ and i () (U, it is between 2 0 0 Nib3 / h and IIONib3 / h. According to the following curve 1Q0K solid line Ministry of Economy Central Bureau of Employee Employee Consumer Cooperative printed the table. According to the first variable, it may remain between 8 G 0 and 1 QG JJ m3 / Hour (along curve 1 0 2). It is also possible to keep the time from 60 to 1 Q 0 between 400 and 100Nl0 3 / hour (curve 101). Of course, all injectors are adjustable. On the basis of the Botong setting value, for example, C3 of 4th building in the smoke, or at different setting values (one value for each injector or one or more groups of injectors are the same value). Comparative example: The following example It is a comparison between the operation of the device according to the prior art (hereinafter referred to as "burner PC") and the operation of the device according to the method of the present invention (hereinafter referred to as "invention PC"). This example shows Energy saving, for about 100 tons of inlays that are slightly more than ten hours, it represents a saving of 1,800 (W / h. The device according to the prior art includes four Fast oxygen injector (25Qin / s), on the contrary, the device according to the present invention includes four low-speed oxygen injectors (UDra / s). In both cases, the conditions (except the following) are of the same quality. The results are shown below: 'Burner PC Invented PC «Consumption (kWh / t) 377 359 -13- This paper scale adopts the Chinese national rate (CNS > A4 specification (210Χ297mm) --------- ^ Cloth— (Please read the precautions on the back and then fill in this page) Order 9 Α7 Β7 V. Description of Invention Uv) Printed power supply time (minutes) of the Minutes Bureau of the Ministry of Economic Affairs of the Central Provincial Bureau of Mining and Paper Industry 57.5 52.4 The whole assembly process is completed! Oxygen injection volume (Nm3 / t) 33.6 37.1 Oxygen injection volume after combustion (Nra3 / t) 11.4 13.0 Maximum junction! Oxygen flow rate (Nm3 / h) 1,800 3,200 Maximum oxygen injection rate (ra / s) 252 113 Graphical symbols Description 1 Furnace 2 Bottom 2 r 191 Take low point 3 Side wall 4 Slag door 5 Pour □ 6 Ridge 7 Electrode 8 Electrode 9 Electrode -14 f ^ Order (please read the precautions on the back before filling this page) This paper size is applicable China National Standardization (CNS) A4 specification (210Χ 297 mm) 3aa6〇 ^: Fifth, the description of the invention (ή) I 0 pipeline II injector 12 injector 13 source 1 4 pipeline 15 control assembly 16-carbon oxide analyzer 17 head 18 shaft 19 shaft 2 0 _ cylinder 2 1 external surface economy Printed by the Employees Consumer Cooperative of the Central Central Bureau of Accreditation ...} --------- 1 Heart-- (please read the precautions on the back before filling out this page) 2 2 Supporting the Skull Structure 2 3 Supporting the Zhao Bearing 2 4 Refractory filler 2 5 Cylindrical opening 2 6 Front 2 7 Inner face 2 8 Pipeline 2 9 Diaphragm 30 Fixed calibration small opening 3 1 Countersunk drill 4 0 Furnace-1 5- This paper scale uses the Chinese National Standard (CNS) A4 size (210X297 mm) Printed by the Ministry of Economic Affairs, Central Standards Bureau, Beigong Consumer Cooperatives, mmg, scale suppression 308609μ σ Β7 5. Invention description ui |) 4 1 electrode 4 2 electrode 4 3 electrode 4 4 open P 4 5 oxygen injector 4 6 Oxygen injector 4 7 Oxygen injector 4 8 Oxygen injector 4 9 Injector 5 0 Oxygen injector 5 1 Smoke vent 5 2 Flow 5 3 * eat gas flow 5 4 flow 5 5 gas flow 5 6 Thin hole making 6 0 Gold bath 6 1 Slag 6 2 Furnace 6 3 Injector 6 4 Cloud domain state S 6 5 7 3 oxygen blowing tube -16- {private custom (Read Notes on the back and then fill the page) with the present paper Bu China National Standard Scale (CNS) A4 size (210X29 * 7 mm)

Claims (1)

A8 B8 C8 D8 1¾¾%¾¾ 308609 六、申請專利範圍 1 . 一種熔化埔中填料之方法，其係供應熔合能至填 料，其中氣髓及顯著地至少一種可燃氣鰭，此填料之熔化 過程中產生，該方法中在至少某段時間内將含有多於25¾ 體積比之氧化劑氣體注人Μ進行該可燃氣體及，特別是一 氧化碳之後燃馍，其特徴為在後燃燒之過程中，氧化劑氣 髓以至少一個氣化劑氣髓氣流之形式低速於填料上方注人 ，各氣流具流速介於50與l,2 0 0 Nra3 /h間及注入爐之速度 介於5m/s與15Qm/s間。 2 *如申請專利範圍苐1項之方法，其中可燃氣體為 一氧化碳。 3 ·如申諝專利範圍第1項或第2項之方法*其中該 爐為電弧爐*各可燃氣髖氣流之注人方向實值上與弧煙產 生之主要氣髓流相苻。 4 *如申請專利範圍第1或第2項之方法，其中為至 少在爐中無後燃焼產生之某段時間内提供速度介於5m/s與 2 0 n / s間之氧化劑氣體注入燫之保持流速K防止或減少任 一氧化劑氣體注入器之填塞。 5 ·如申諝專利範圍第1或第2項之方法，其中至少； 一氧化劑氣體氣流Κ相對於爐壁之切線方向注入，角度於 2 50 與 40〇 間。 6 ·如申請專利範園第5項之方法，其中角度為30° 〇 7 ·如申請專利範園第1或第2項之方法，其中至少 本紙張尺度逋用中國國家揉準（CNS ) Α4规格（210X29*7公釐） --------f 裝------訂------ί .一 (請先閲讀背面之注意事項再填寫本瓦) 經濟部中央橾率局貝工消费合作社印製 2〇$g〇9 __ D8 六、申請專利範圍 -s化劑氣體氣流自爐之側壁向下注人，角度相對於水平 方向1 0 0與2 0 0間。 8 <如申請專利範圍第7項之方法，其中角度相對於 水平方向為1 5。。 9 ·如申請專利範圍第1或第2項之方法，其中氧化 劑氣體使用至少三個注入器注入，其均勻分佈在爐之後側 表面。 1 0 ·如申請專利範圍第9項之方法，其中氧化劑氣 體使用四個注入器。 1 1 ·如申諝專利範圍第1或第2項之方法，其中各 氧化劑氣體氣流具流速80與850ΝΙΠ3 /h間及注入口之氣體 出口速度5 0與1 2 5 m / s。 1 2 ·如申諝專利範圍第1 1項之方法，其中注入口 氣髏出口速度為100m/s。 1 3 ·如申請專利範圍第1或第2項之方法，其中來 自爐之煙氣經連續分析及氧化劑氣體流速經調整為此分析 之结果之函數。 1 4 ·如申請專利範圍第1或第2項之方法，其中5全 熔化碎屑以製鋦之電弧爐中•煙氣分析在於煙氣中一氧化 碳滬度之測量。 1 5 ·如申謅專利範園第1項或第2項之方法，其中 利用多個注入器組，其在出口具有相對於逋1垂直軸UX) 呈切線方向之組件，連纘組之注入器安排為不同層级（Ni 本紙張尺度逋用中國國家橾率（CNS ) A4规格（210X297公釐） I I Ί— · (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局貝工消費合作社印装 ^teag 308609 m C8 D8 經濟部中央標率局爲工消費合作社印製 六、申請專利範圍 1 1 ,N 2 ) 及 定 位 在 交 替 之 圓 周 方 向 0 1 1 I 1 6 • 如 申 請 專 利 範 圍 第 1 或 第 2 項 之 方 法 t 其 中 利 /---- 1 I 用 連 串 之 注 入 器 全 排 列 在 相 同 層 級 上 某 i£b 此 等 注 入 器 請 先 1 1 閱 I 在 第 一 方 向 具 圓 周 方 向 之 組 件 及 在 相 對 於 水 平 方 向 之 第 一 讀 背 I 面 I 角 度 具 -~~* 向 下 之 姐 件 ♦ 及 其 他 注 入 器 在 相 反 方 向 具 圓 周 方 之 注 1 I k 1 I 向 之 組 件 及 在 第 二 角 度 較 佳 不 同 於 該 第 —» 角 度 之 角 度 具 事 項 1 I 一 向 下 之 組 件 0 再 填 1 7 如 申 請 專 利 範 圍 第 1 6 項 之 方 法 其 中 第 二 角 寫 本 頁 1 度 與 第 —· 角 度 不 同 0 1 1 1 8 如 申 請 專 利 範 圍 第 1 或 第 2 項 之 方 法 其 中 含 1 I 氧 .tear 氣 體 為 純 度 至 少 88¾之氧 ) 1 訂 1 9 如 Φ 請 專 利 範 圍 第 1 或 第 2 項 之 方 法 其 中 氧 1 化 劑 氣 體 流 速 在 鏞 造 期 間 為 變 數 具 階 梯 式 氧 注 入 0 1 1 2 〇 如 申 請 專 利 範 圍 第 1 或 第 2 項 之 方 法 其 中 於 1 1 至 少 爐 中 無 後 燃 燒 產 生 之 某 時 段 内 提 供 氧 化 劑 氣 賵 注 入 爐 之 保 持 流 速 t 此 氣 體 為 空 氣 0 »·- 1 1 2 1 如 請 專 利 範 rat 圍 第 1 或 第 2 項 之 方 法 其 中 使 1 1 用 至 少 個 氧 化 劑 氣 體 注 入 器 0 1 1 2 2 如 Φ 請 專 利 範 圍 中 第 1 或 第 2 項 之 方 法 其 中 1 I 氣 化 劑 氣 體 注 入 器 全 置 於 爐 之 上 半 部 0 1 1 I 2 3 * 如 申 請 專 利 範 _ 第 1 6 項 之 方 法 » 其 中 氧 化 劑 1 1 氣 體 注 入 器 全 置 於 相 對 於 金 屬 層 之 爐 之 上 半 部 0 1 1 2 4 * 如 申 請 專 利 範 圍 第 1 或 第 2 項 之 方 法 1 其 中 氧 1 | - 3- 1 1 本紙張尺度逋用中國國家棣準（CNS ) A4规格（210X297公釐） 3K6iaa» 3〇S6〇9 ^ C8 D8 六、申請專利範圍 化劑氣體與爐產生之煙氣之至少一部份混合以在氧化劑氣 體注人該爐前將氧化劑氣體先預熱。 2 5 ·如申請專利範圍第1或第2項之方法，其中氧 化劑氣體在引入爐前先預熱。 (請先閲讀背面之注意事項再填寫本頁) 訂 .丄 經濟部中央標準局®c工消費合作社印製 -4 - 本紙張尺度逋用中國國家橾準（CNS ) A4洗格（210 X 297公釐）A8 B8 C8 D8 1¾¾% ¾¾ 308609 VI. Patent application 1. A method of melting Puzhong filler, which supplies fusion energy to the filler, in which the gas pith and notably at least one kind of combustible fin are produced during the melting process of the filler In this method, the oxidant gas containing more than 25¾ volume ratio is injected into the M for at least a certain period of time to burn the combustible gas and, in particular, the carbon monoxide is burned after steaming. The special feature is that during the post-combustion process, the oxidant gas At least one gasifying agent pneumophilic gas flow is injected at a low speed above the packing, each gas flow rate is between 50 and 1,200 Nra3 / h and the velocity of the injection furnace is between 5 m / s and 15 Qm / s. 2 * For example, the method of applying for patent item 1 in which the combustible gas is carbon monoxide. 3 · For example, the method of item 1 or item 2 of the patent scope * where the furnace is an electric arc furnace * The actual injection direction of each combustible hip gas flow is in line with the main gas flow produced by the arc smoke. 4 * The method as claimed in item 1 or 2 of the patent application scope, in which at least a certain period of time without post-combustion sintering is provided in the furnace to provide the injection of oxidant gas with a velocity between 5 m / s and 20 n / s Maintaining the flow rate K prevents or reduces the packing of any oxidant gas injector. 5. The method as claimed in item 1 or 2 of the patent scope, in which at least; an oxidant gas flow K is injected relative to the tangential direction of the furnace wall at an angle between 2 50 and 40 °. 6 · For example, the method of applying for Patent Fan Garden Item 5, where the angle is 30 ° 〇7 · For the method of applying for Patent Fan Garden, Item 1 or 2, wherein at least the paper size is based on China National Standard (CNS) Α4 Specifications (210X29 * 7mm) -------- f Packing ------ order ------ ί. One (please read the precautions on the back before filling in this tile) Central Ministry of Economic Affairs Printed by the Peugeot Consumer Cooperative Society 2〇 $ g〇9 __ D8 6. Patent application scope -s The chemical gas flow is injected downward from the side wall of the furnace, the angle is between 100 and 200 relative to the horizontal direction . 8 < As in the method of claim 7 of the patent application, where the angle is 15 relative to the horizontal direction. . 9. A method as claimed in item 1 or 2 of the patent application, in which the oxidant gas is injected using at least three injectors, which are evenly distributed on the rear surface of the furnace. 1 0 · As in the method of claim 9 of the patent application, the oxidant gas uses four injectors. 1 1 · The method as claimed in item 1 or 2 of the patent scope, in which each oxidant gas flow has a flow rate between 80 and 850NIII / h and the gas outlet velocity of the injection port is 50 and 125 m / s. 1 2 · Such as the method of claim 11 of the patent scope, in which the outlet velocity of the gas inlet is 100m / s. 1 3. As in the method of claim 1 or 2, the flue gas from the furnace is continuously analyzed and the flow rate of the oxidant gas is adjusted as a function of the result of the analysis. 1 4 · As in the method of claim 1 or 2 of the patent application, where 5 completely melts the debris to make the electric arc furnace of the roast. • Flue gas analysis is the measurement of carbon monoxide in flue gas. 1 5 · As in the method of item 1 or item 2 of the patent application park, where multiple injector groups are used, which have components at the outlet that are tangential to the vertical axis UX), and even the injection of the group The device is arranged in different levels (Ni paper size uses the Chinese National Standard (CNS) A4 specification (210X297 mm) II Ί— · (please read the precautions on the back before filling in this page) Order the Central Standards Bureau of the Ministry of Economy Printed by Beigong Consumer Cooperative ^ teag 308609 m C8 D8 Printed by the Central Standards Bureau of the Ministry of Economic Affairs for the Industrial and Consumer Cooperative 6. Scope of patent application 1 1, N 2) and positioned in alternating circumferential directions 0 1 1 I 1 6 • Such as The method of applying for patent scope item 1 or item 2 where the benefit / ---- 1 I use a series of injectors all arranged at the same level i £ b such injectors please first 1 1 read I in the first The component with the direction of the circumference and the angle with the angle of the first reading I plane relative to the horizontal direction- ~~ * Downward sister item ♦ and other injectors with a circle in the opposite direction Note 1 I k 1 I-direction components and at a second angle are preferably different from the angle of the first — »Angle item 1 I one-way The next component 0 is filled with 1 7 as the method of applying for the patent scope item 16 where the second corner writes this page 1 degree is different from the angle — 0 1 1 1 8 If the method of applying for patent scope item 1 or 2 Including 1 I oxygen. The tear gas is oxygen with a purity of at least 88¾) 1 Order 1 9 If Φ please patent the method of item 1 or 2 wherein the flow rate of the oxygen 1 agent gas is a variable with stepped oxygen injection during the process 0 1 1 2 〇 As in the method of claim 1 or 2 of the patent application, in which the oxidant gas injection is provided within a period of time at least 1 1 at least in the furnace without post-combustion The furnace maintains the flow rate t. The gas is air. 0 »·-1 1 2 1 If you want to use the method in item 1 or 2 of the patent scope, use 1 1 with at least one oxidant gas injector 0 1 1 2 2 If Φ please The method of item 1 or item 2 in the patent scope, where 1 I gasifier gas injector is all placed in the upper half of the furnace 0 1 1 I 2 3 * If the patent application _ item 16 method »where oxidant 1 1 The gas injector is placed in the upper half of the furnace relative to the metal layer 0 1 1 2 4 * If the method of patent application item 1 or 2 1 wherein oxygen 1 |-3- 1 1 This paper size is used China National Standard (CNS) A4 specification (210X297mm) 3K6iaa »3〇S6〇9 ^ C8 D8 VI. Patent application scope At least a part of the agent gas and the flue gas generated by the furnace are mixed to inject the oxidant gas Preheat the oxidant gas before the furnace. 2 5 • The method as claimed in item 1 or 2 of the patent application, in which the oxidant gas is preheated before being introduced into the furnace. (Please read the precautions on the back and then fill out this page) Order. Printed by the Central Bureau of Standards of the Ministry of Economic Affairs®c Industrial and Consumer Cooperatives-4-This paper is printed in China National Standards (CNS) A4 (210 X 297 Mm)