201120382 六、發明說明： 【發明所屬之技術領域】 本發明總體上涉及鼓風爐設備（blast flirnace plant)内的氣體 處理’且更具體地’涉及在膨服滿輪機内從爐頂氣中回收能量。 【先前技術】 如所公知的，氣體在鼓風爐（BF)操作中扮演著重要角色。 首先，氣體主流是在鼓風爐的爐腹區與爐膛區之間的過渡處被吹 動並將與爐料（鐵礦石、焦炭、熔劑等）作用的氣流（或“鼓風”）。 在鼓風氣流到達鼓風爐風口之前，其在通過再生爐（也就是考珀 式爐（Cowper))時被預熱’再生爐通常是通過燃燒鼓風爐廢氣被 加熱的。在考珀式爐上游吸入的環境空氣形成“冷鼓風（c〇w blast) ”，而考站式爐下游的被預熱的鼓風被稱為“熱鼓風”。 a鼓風爐中的其他主要氣流是在爐頂離開鼓風爐的氣體，也就 是“爐頂氣”或“鼓風爐氣”’該氣體是鼓風爐的副產物，是在鐵礦石 被焦炭和/或其他燃料還原為金屬鐵時產生的。鼓風爐爐頂氣通 用作煉鋼廠或相式射的㈣，但其也可在罐鱗電設備 燃燒。它也可財職之前與天然氣或㈣職結合 具有更純_氣體或㈣火雜（flame sup酬)從*維_^ 助二St ’幾十年來’鼓風爐都利用内部過壓來操作，借 此提高生鐵的產量。 褥化，且因 當然，内部下的操作也意味著顯 相關的附加成本。更且體蚰， 裝置和刼作 201120382 下的操作還常見的情況是離開爐頂氣的氣體處於顯著高於大氣壓 的壓力。然而，爐頂氣仍含有可燃燒的成分，主要是一氧化碳和 車父低含量的氫氣，並可用作低熱值燃燒氣體，用於產生熱能或者 機械能和電能。 離開鼓風爐的爐頂氣還攜帶相當量的固體物質，主要是灰塵 形式的物質。在爐頂氣的任何後續使用之前，都要求除去這些固 體材料。傳統上這是在鼓風爐設備的氣體淨化分設備中完成的， 其通常包括第一乾燥分離裝置（具有重力分離器（除塵器）和/或 軸流旋風器（axial cyclone)和後續濕式精細淨化裝置（濕式分離 器）。由於濕式淨化’爐頂氣溫度下降約1〇〇ΐ，並飽和有水蒸氣， 且包括額外的液體水滴。 、 長期以來就已知，在淨化後，除了利用爐頂氣的熱能，還在 膨脹渦輪機中回收加壓鼓風爐爐頂氣的氣動能量（pneumatic energy)。在渦輪機中，爐頂氣膨脹至接近大氣壓，同時產生機械 功。渦輪機轉子可接合到例如發電機、冷鼓風壓縮機、或任何其 他負載。 八 如現在還已知的，通過在淨化且因此冷卻的爐頂氣進入渦輪 機之前對其加熱，可提高這種膨脹渦輪機（也稱為頂壓回收渦輪 機（ToppressureRecovery Turbine) -TRT)的效率。為此，人們提 出通過燃燒膨脹的爐頂氣而預熱渦輪機上游的淨化爐頂氣。可替 換地，JP62074009提出通過熱交換器從爐渣粒化過程中提取熱量 並將該熱量傳遞到TRT上游的冷卻淨化的爐頂氣。 FR 2 663 685披露了用於從鼓風爐氣體中回收能量的工藝。鼓 風爐氣體穿過精細和/或粗糙的灰塵過濾，然後進入與動力發電機 接&的（壓力回收）渦輪機並且進一步到達氣體管線以便進一步 201120382 5%) ( 12) 料(例如天然氣壓;i ’並且可能與高熱燃 收渦輪機s^=== 黑渦輪機發電機。在注入回 ，^氣體涡輪機中膨溫度3 冷鼓風氣流可能在氣體機中燃燒。 升…一部分 【發明内容】 中回種利用TRT從鼓風爐設備内的爐頂氣 所述所述之方法和申請專利範圍第6項 允=氣流的優化方式，該方式 时〜^ ^半插作trt。根據本發明的方法，從冷鼓風預埶 =旦二式爐等）上游的壓縮冷鼓風氣流中提取熱量，並將該 地〕傳遞到膨服渦輪機上游的冷卻淨化的爐頂氣。 量優選地執行為其在冷鼓風主管中朝著預熱 器傳运^又有為加熱被淨化的爐觀的目_消耗該冷鼓風。 樣做’在再生爐之前可降低顿風溫度，且同時可提高冷 :淨化的爐頂氣的溫度，提高了相式爐和TRT兩者的效^。實 已知的是在TRT之前提高爐頂氣的溫度提高了 trt的效率 U 了結冰的驗，同時在相式爐之前降低冷鼓風的溫度提 效率。更特别地’冷鼓風的較低溫度增加了考 應該理解’現有技術的豉風爐設備巾，預熱被淨化爐頂氣所 =要的能量是通過職提供的或者從外部媒介（如驗粒化）中 β取的’且冷鼓風 > 肖除的熱量被浪費，本發明的優點在於實現了 =:=：：爐頂氣的熱交換’對改善考抬式爐和離機兩者 201120382 ^發明顯著的方面在於獲得了冷鼓風與冷卻淨化的 爐頂氣之間的-種“自調節’，熱交換。實際上，鼓風爐上游的鼓風 氣流條件影響鼓職下游的爐魏氣流條件（反之絲），且表現 為使這兩種氣流處於熱交換關係自動地補償—側或另一側的變 化。 ★應該指出’本工藝比在FR 2 663 685中描述的工藝尤其更加 簡? 為在即時工藝（in細抑㈣中冷鼓風氣流不受影響， /、疋”、、里減/，並且特別地是沒有部分地被導出以在氣體渦輪機 中與爐頂氣一起燃燒。 ^事Γ上’本方法提供了一種比在TRT之前預熱被淨化的爐頂 氣更加簡化且有效的方式，這有利於整個設備的經濟。 本發明還涉及一鼓風爐設備，其包括： 鼓風爐，連接到鼓風系統（blastairsystem)，該鼓風系統具有 至少一個冷鼓風壓縮機和至少一個鼓風預熱器，其中，在冷鼓風 壓縮機（―個或多個）中形成的壓縮冷鼓風在鼓風預熱|/(_個 或多個）中被加熱，以便向鼓風爐提供熱鼓風； 爐頂氣淨化單元，接收從鼓風爐釋放的爐頂氣； 膨脹渦輪機，具有接合到負載的輸出軸，該膨脹渦輪機設 在爐頂氣淨化單元的下游； 預熱單元，位於爐頂氣淨化單元與膨脹渦輪機之間，以便办 熱被淨化的爐頂氣流；以及 1 從壓縮冷鼓風中提取熱量並將其至少部分地傳遞給預熱單元 中的淨化的爐頂氣的裝置。 … 本方法和鼓風爐設備的優選實施例在各從屬申請專利範圍中 說明。 應該指出，任何適當的技術可用來從壓縮冷鼓風中提取熱量 201120382 並將其至少部分地傳遞給淨化的爐頂氣。在這方面，人們可使用 任何適當類型的結合熱交換流體回路的熱交換器。一 的熱交換线是所制“鮮（heat pipe)，，（直的或環形的），其 ^蒸發器部件设置在冷鼓風一側而冷凝器部件設置在淨化的爐頂 氣一側。 【實施方式】 在圖1中示意性示出本鼓風爐設備的第一實施例（僅示出* 氣處理/調節裝置參考標號10表示鼓風爐，熱鼓風從鼓風系ς 輸入至該鼓風爐中’該鼓風系統包括鼓風機12 (或壓縮機）和包 括-組二個再生爐14的預熱n單元’這在本領域中是常見的。鼓 風機12壓縮空氣並形成冷鼓風流，該冷鼓風流流經冷鼓風主管 到達再生爐14。該冷鼓風流在再生爐14中被加_ 9〇〇t到 13〇〇°C之間的溫度並流經熱鼓風主管18到達風口（未示出），在 風口處熱鼓風被注入鼓風爐10中。 鼓風爐10釋放的爐頂氣至少部分地被引導到爐頂氣回收渴輪 ,20，以便從中回收氣動能量。參考標號22麵將爐頂氣運送到 氣體淨化分廠24的廢氣管。爐職淨化絲％可吨括與—與 属式分離n28順次連接的幹式分離器％。可以在分薇24中 任何適當類型的淨化技術。 被淨化的爐頂氣流通過管3〇經由預熱單元32供應至渴輪 20:以便加熱由於單元24中的淨化玉藝已被冷卻了來的淨化的爐 頂氣流。在渴輪機20中，淨化的爐頂氣膨脹到較低的麼力和溫产 並將機械功提供至接合咖輪餘出軸的貞載％ (這裏示為發$ 機）。然後’滿輪機2〇τ游的膨脹爐頂氣經由出口管31可返回到 201120382 淨化氣體醜（deangasnet丽k)或傳翻烟者/㈣者設施， 如電站。 應顧解，本鼓風爐設備包括從壓縮冷鼓風巾提取熱量並將 其至少部分傳遞給預熱單元32中的淨化的爐頂氣的裝置。這有利 地，過安裝在傳輸壓縮冷空氣到再生爐14的冷鼓駐f 16上的 熱父換器35實現。在熱交換器35中，純風與以％表示的献交 換回路的敎換流體形成熱交換_ (細不混合）。熱交換回路 f選包括將熱親流體從触換器35輸送到雜單元％的栗送 =(未不出）’提取的熱量在預熱單元中至少部分被傳遞 的爐頂氣。 =鼓風提取熱量從崎其傳_淨化的爐職提供了一種 ，吊的方式·在淨化的爐頂氣在TRT祕情脹之前預数該 淨化的爐頂氣。這也提高了再生爐14和渦輪機2()兩者的效率、。 ==風熱量被浪費並且預熱淨化的爐頂氣需要燃燒器等所已知 5Ϊ=、，獲得了“自調節”效果。實際上，鼓風爐上游和下游 的氣"IL條件被關聯，下面是說明如何操作的實例。 實例 TCP_ ’熱鼓風壓力（_)越高著= 士金π摅m/、、中疋在渴輪機2〇之前的鼓風管線（blastline)、 i i 氣體淨化設備24中的壓力損耗（根據_性， 大，勺疋範圍在1.0-2.5 bar之間的常數）。而且，TG古 TRT20中的膨脹_，爐頂氣溫度（TGT)下降就越多。-，在 8 201120382 在TRT20之前預熱淨化的爐頂氣是有意義的。如果淨化的爐 頂氣沒有預熱，則在TRT20之後的TGT將較低，導致trt結冰 的風險且發電機34 t產生的電能減少。然而，如果在TRT 2〇°之 ㈣蝴概下游的 然而’通過在TRT之前糊從冷觀t时神量預 =^1現有_預熱方案，該方案提供自動、適當的加埶。如 增加，且冷鼓·力增加，同時冷鼓風溫度相應地升高。力 同時’渦輪機20處的壓力差增加。但防止了 淨倾爐頂氣知可從冷鼓風經由熱交換回路36傳遞到 預熱TRT^_觀是降低’且*雜少的熱量來 風可獲得較少的熱量 疋有利的，因為從壓力也降低的冷鼓 為了示例的目的，我們p奴4 理回路的不同位置處圖1中鼓風爐10的氣體處 那樣，鼓風機將215。(：和5丨h …這些值已經計异。如看到的 在經過熱_35的給熱側： 氣流經預熱器32的^^回皿f H45°C ’處於2.3_。然後爐頂 *、、、°路’這裏其溫度提升到l〇3°C，處於2.2 201120382 i f barg。然後，預熱的爐頂氣流入渦輪機2〇並在25(>c和網路壓力 離開滿輪機。 k冷政風到爐頂氣的熱量傳遞是通過熱交換回路36實現的， 該熱父換回路與熱交換器35的吸熱側和預熱單元32的給熱側 (=at-givingside)流體連通。可以注意到在該實例中，離開&交 換器35的熱交換流體的溫度為17〇°C ;在預熱單元32之後，熱交 換流體將大部分熱量提供給爐頂氣並具有75。(：的溫度。 、如從該實例中看到的那樣，通過提高其效率，該操作方案足 以在避免結冰風險和過熱的水準上預熱TRT之前的爐頂氣。換句 話說，自調節效果不僅允許加熱TRT之前的爐頂氣，而且在鼓風 爐設備内提供可靠適麵TRT祕操作，也可· TRT下游的使 _如圖1所* ’賴在傳、_作條件下從冷鼓風提取的熱量可 t*疋充足#但人們可此希望能夠向渦輪機上 =額外的熱量。在圖2中示出這樣做的兩種可替換或互補爐方二 -中相同的參考標號表示鼓風爐設備的相同部件。 $ ’可通過以4G表示_燒器等提供額外的熱量，該燃燒 ^裝在鼓_财，且錄錄交鋪％咖鮮元％的 „體的液流上。此外，預熱器42可安裝在淨化氣體管3〇 认在預熱早疋與渦輪機2〇之間。任何適當類型的技術可用於額 、加熱器40和42，如與熱錢n接合的燃燒器。 換器_的。這_語熱交 流體渦輪機二交而=流/空氣流可與另一氣體或 风…乂換關係，而不用彼此混合。任何與鼓風爐中 10 201120382 的使用相相容的技術都可使用。具體地 鼓風傳，淨化的爐職，這裏冷凝科件可設 中’且洛發ϋ部件設置在冷鼓風-侧。而且對於膨祕輪機2〇、 氣體淨化分設備24、再生爐14或熱交換流體回路％，不再需要 進一步的說明，因為這是本領域技術人員已知的裝置類型及用^。 【圖式簡單說明】 ~ 將通過實例參考附圖來描述本發明，附圖中： 圖1是具有氣體能量回收系統的本鼓風爐設備的第一實施例 的示意圖； 圖2是具有氣體能量回收系統的本鼓風爐設備的替換實施例 的示意圖。 【主要元件符號說明】 10鼓風爐 12膨脹渦輪機 14再生爐 16冷鼓風主管 18熱鼓風主管 2〇渦輪機 22廢氣管 24分廠 26幹式分離器 28濕式分離器 3〇淨化氣體管 31出口管 32預熱單元 201120382 34發電機 35熱交換器 36熱交換流體回路 40加熱器 42加熱器BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to gas treatment within a blast flirnace plant and more particularly to recovering energy from a top gas in an expanded full turbine. [Prior Art] As is well known, gas plays an important role in the operation of a blast furnace (BF). First, the gas main flow is an air flow (or "blast") that is blown at a transition between the belly area of the blast furnace and the hearth zone and that interacts with the charge (iron ore, coke, flux, etc.). Before the blast air reaches the blast furnace tuyere, it is preheated while passing through the regenerator (i.e., the Cowper). The regenerative furnace is typically heated by burning the blast furnace off-gas. The ambient air drawn in upstream of the Cooper furnace forms a "c〇w blast", while the preheated blast downstream of the station furnace is referred to as "hot blast." a Other main airflow in the blast furnace is the gas leaving the blast furnace at the top of the furnace, that is, "top gas" or "blast furnace gas". This gas is a by-product of the blast furnace and is reduced in iron ore by coke and/or other fuels. Produced when it is metal iron. The blast furnace top gas pass is used as a steel mill or phase shot (4), but it can also be burned in tank scale electrical equipment. It can also be used in conjunction with natural gas or (four) jobs before it has a more pure _ gas or (four) fire (fire) from the * dimension _ ^ help two St ' decades of blast furnaces are using internal overpressure to operate, thereby Increase the production of pig iron. Degenerate, and of course, internal operations also mean significant additional costs. Further, the operation of the device and the operation under the operation of 201120382 is also common in that the gas leaving the top gas is at a pressure significantly higher than atmospheric pressure. However, the top gas still contains combustible components, primarily carbon monoxide and a low hydrocarbon content of the carrier, and can be used as a low calorific value combustion gas for the production of thermal or mechanical energy and electrical energy. The top gas leaving the blast furnace also carries a considerable amount of solid matter, mainly in the form of dust. Removal of these solid materials is required prior to any subsequent use of the top gas. Traditionally this has been done in a gas purification plant of a blast furnace plant, which typically includes a first dry separation unit (with a gravity separator (dust collector) and/or an axial cyclone and subsequent wet fine purification) Device (wet separator). Due to wet purification, the temperature of the top gas is reduced by about 1 〇〇ΐ and saturated with water vapor, and includes additional liquid water droplets. It has long been known that after purification, in addition to utilization The thermal energy of the top gas is also used to recover the pneumatic energy of the pressurized blast furnace top gas in the expansion turbine. In the turbine, the top gas expands to near atmospheric pressure while producing mechanical work. The turbine rotor can be coupled to, for example, the hair. a motor, a cold blower compressor, or any other load. As is now also known, this type of expansion turbine (also known as top pressure) can be enhanced by heating the cleaned and thus cooled top gas before entering the turbine. The efficiency of the Toppressure Recovery Turbine - TRT. For this reason, it is proposed to preheat the turbine by burning the expanded top gas. Purification of the top gas. Alternatively, JP62074009 proposes to extract heat from the slag granulation process by a heat exchanger and transfer the heat to the cooled purified top gas upstream of the TRT. FR 2 663 685 discloses the use of a blast furnace Process for recovering energy from a gas. The blast furnace gas is filtered through fine and/or coarse dust and then into a (pressure recovery) turbine that is connected to the power generator and further reaches the gas line for further 201120382 5%) (12) (eg natural gas pressure; i 'and possibly with high heat recovery turbine s^=== black turbine generator. Inject back, ^ gas turbine swell temperature 3 cold blast airflow may burn in gas machine. SUMMARY OF THE INVENTION The method of using the TRT from the top gas in the blast furnace apparatus and the method of claim 6 of the patent scope Scope = airflow optimization method, wherein the method is half-interpolated as trt. In the method of the invention, heat is extracted from the compressed cold blast airflow upstream of the cold blast preheating furnace, and the ground is transferred to the cooling air upstream of the expanding turbine. Top gas. The amount is preferably carried out such that it is transported towards the preheater in the cold blast mains and the cold blast is consumed for the purpose of heating the purified furnace. The sample can be lowered before the regenerative furnace, and at the same time the cold can be increased: the temperature of the purified top gas increases the efficiency of both the phase furnace and the TRT. It is known that increasing the temperature of the top gas before TRT increases the efficiency of trt. U. The icing test is carried out while reducing the temperature increase efficiency of the cold blast before the phase furnace. More specifically, the lower temperature of the cold blast increases the test should understand 'the prior art hurricane equipment towel, preheating the top gas of the purified furnace = the energy required is provided by the job or from the external medium (such as In the granulation), the heat taken by β and the cold blast is wasted, and the advantage of the present invention is that the heat exchange of the top gas is achieved by the =:=:: improvement of the furnace and the off-machine 201120382 ^ A significant aspect of the invention is that a kind of "self-regulation" and heat exchange between the cold blast and the cooled top gas is obtained. In fact, the blast air flow condition upstream of the blast furnace affects the furnace downstream of the drum Airflow conditions (and vice versa), and appear to automatically compensate for the change in the heat exchange relationship—the side or the other side. ★ It should be noted that the process is particularly simpler than the process described in FR 2 663 685. In order to be in the immediate process (in the case of fine (4), the cold blast airflow is unaffected, /, 疋", "in", and in particular not partially derived for combustion with the top gas in the gas turbine. ^In fact, this method provides A more simplified and efficient way of preheating the purified top gas prior to TRT, which benefits the economy of the overall plant. The invention also relates to a blast furnace apparatus comprising: a blast furnace connected to a blastair system, The blast system has at least one cold blast compressor and at least one blast preheater, wherein the compressed cold blast formed in the cold blast compressor (one or more) is preheated in the blast | (_ or more) heated to provide a hot blast to the blast furnace; a top gas purification unit to receive the top gas released from the blast furnace; an expansion turbine having an output shaft coupled to the load, the expansion turbine being disposed a downstream of the top gas purification unit; a preheating unit located between the top gas purification unit and the expansion turbine to heat the purified top gas stream; and 1 extracting heat from the compressed cold blast and at least partially A device for delivering purified top gas in a preheating unit. ... The preferred embodiment of the method and blast furnace apparatus is described in the scope of each dependent patent. It should be noted that any The technique can be used to extract heat from the compressed cold blast 201120382 and pass it at least partially to the purified top gas. In this regard, any suitable type of heat exchanger incorporating a heat exchange fluid circuit can be used. The heat exchange line is made of "heat pipe", (straight or annular), the evaporator member is disposed on the cold blast side and the condenser member is disposed on the purified top gas side. Embodiments A first embodiment of the present blast furnace apparatus is schematically shown in Fig. 1 (only the gas treatment/regulation apparatus reference numeral 10 indicates a blast furnace, and a hot blast is input from the air blowing system into the blast furnace) The blast system includes a blower 12 (or compressor) and a preheating n unit comprising a set of two regenerators 14 which are common in the art. The blower 12 compresses the air and forms a cold blast flow that flows through the cold blast mains to the regenerative furnace 14. The cold air flow is added to the temperature in the regenerator 14 between 〇〇 9 〇〇 t and 13 〇〇 ° C and flows through the hot blast main 18 to the tuyere (not shown) where the hot blast is injected. In the blast furnace 10. The top gas released by blast furnace 10 is at least partially directed to a top gas recovery thirst wheel 20 to recover pneumatic energy therefrom. The top gas is transported to the exhaust pipe of the gas purification plant 24 by reference numeral 22. The furnace cleaning wire % can be included with the dry separator of the sub-separation n28. Any suitable type of purification technology can be used in the Divider 24. The purified top gas stream is supplied to the thirsty wheel 20 through the preheating unit 32 through the tube 3: in order to heat the purified top gas stream which has been cooled by the purification of the jade in the unit 24. In the Thirty Turbine 20, the purified top gas expands to a lower force and temperature and provides mechanical work to the % of the remaining shaft of the coffee wheel (shown here as a machine). Then, the expansion furnace top gas of the full turbine 2 ττ can be returned to the 201120382 purge gas ugly (deangasnet 丽 k) or the rumored smoker/(4) facility, such as a power station. It should be understood that the present blast furnace apparatus includes means for extracting heat from the compressed cold blast wiper and delivering it at least in part to the purified top gas in the preheat unit 32. This is advantageously accomplished by a hot parent exchanger 35 mounted on the cold drum station f 16 that delivers compressed cold air to the regeneration furnace 14. In the heat exchanger 35, the pure air forms a heat exchange _ (finely mixed) with the enthalpy fluid exchanged in %. The heat exchange circuit f selects a top gas that delivers the heat of the hot lyophile from the contactor 35 to the miscellaneous unit % of the extracted heat that is at least partially transferred in the preheating unit. = blast extraction of heat from the Qiqi Chuan _ purification of the furnace job provides a way to hang the hood in the purified top gas before the TRT secret expansion before the purification of the top gas. This also increases the efficiency of both the regeneration furnace 14 and the turbine 2 (). ==The wind heat is wasted and the preheating and purifying top gas requires a known “automatic adjustment” effect such as a burner. In fact, the gas "IL conditions upstream and downstream of the blast furnace are associated, and the following is an example of how to operate. Example TCP_ 'The higher the hot blast pressure (_) = the squid π摅m/, the blast line before the chiller 2 〇, the pressure loss in the ii gas purification device 24 (according to _ Sexual, large, scooping constants ranging from 1.0 to 2.5 bar). Moreover, the expansion _ in the TG ancient TRT20, the more the top gas temperature (TGT) drops. -, on 8 201120382 It is meaningful to preheat the purified top gas before TRT20. If the purified top gas is not preheated, the TGT after TRT 20 will be lower, causing the risk of trt icing and the electrical energy produced by generator 34 t decreasing. However, if the TRT 2〇°(4) is downstream of the butterfly, however, the scheme provides automatic and appropriate twisting by pre-heating t before the TRT. If it increases, the cold drum force increases, and the cold blast temperature rises accordingly. At the same time, the pressure difference at the turbine 20 increases. However, it is advantageous to prevent the net tilting top gas from being transferred from the cold blast to the preheating TRT via the heat exchange circuit 36, and it is advantageous to reduce the amount of heat generated by the wind to obtain less heat. The cold drum with reduced pressure is for example purposes, and the blower will be 215 at the different locations of the blast furnace 10 in Fig. 1 at different locations of the circuit. (: and 5丨h ... these values have been counted. As seen on the hot side of the heat _35: the flow through the preheater 32 ^ ^ return dish f H45 ° C 'at 2.3 _. then the top *, ,,°路' where the temperature is raised to l〇3°C at 2.2 201120382 if barg. Then, the preheated top gas flows into the turbine 2〇 and leaves the full turbine at 25 (>c and network pressure) The heat transfer from the k-governing wind to the top gas is achieved by the heat exchange circuit 36, which heats the heat absorption side of the heat exchanger 35 and the heat supply side (=at-givingside) of the preheating unit 32 It is noted that in this example, the temperature of the heat exchange fluid exiting & exchanger 35 is 17 ° C; after preheating unit 32, the heat exchange fluid provides most of the heat to the top gas and has 75 (: The temperature. As seen from this example, by increasing its efficiency, this operating scheme is sufficient to preheat the top gas before the TRT at avoiding the risk of icing and overheating. In other words, since The adjustment effect not only allows the top gas before the TRT to be heated, but also provides a reliable TRT in the blast furnace equipment. The secret operation is also available. The downstream of the TRT _ as shown in Figure 1. The heat extracted from the cold blast can be sufficient. However, people can hope to turn to the turbine. The same reference numerals are used to indicate the same components of the blast furnace apparatus in Fig. 2. The same reference numerals are used to indicate that the blast furnace apparatus is provided with additional heat. The burning ^ is installed in the drum _ 财, and the recording is 5% of the „body's liquid flow. In addition, the preheater 42 can be installed in the purified gas pipe 3 〇 recognized in the preheating early 疋 with the turbine 2 〇 Any suitable type of technology can be used for the amount, heaters 40 and 42, such as a burner that engages with the hot money n. The converter _. This _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A gas or wind relationship can be used without mixing with each other. Any technology that is compatible with the use of the blast furnace 10 201120382 can be used. In particular, the blasting, the purification of the furnace, where the condensation can be set The Luofa ϋ part is set on the cold blast-side. The body purification device 24, the regeneration furnace 14 or the heat exchange fluid circuit %, no further explanation is needed, as this is a device type and a device known to those skilled in the art. [Simple description of the figure] ~ Reference will be made by way of example BRIEF DESCRIPTION OF THE DRAWINGS The invention is described in the accompanying drawings in which: Figure 1 is a schematic illustration of a first embodiment of the present blast furnace apparatus having a gas energy recovery system; and Figure 2 is a schematic illustration of an alternate embodiment of the present blast furnace apparatus having a gas energy recovery system. [Main component symbol description] 10 blast furnace 12 expansion turbine 14 regeneration furnace 16 cold blast main 18 hot blast main 2 〇 turbine 22 exhaust pipe 24 branch 26 dry separator 28 wet separator 3 〇 purification gas pipe 31 outlet Tube 32 preheating unit 201120382 34 generator 35 heat exchanger 36 heat exchange fluid circuit 40 heater 42 heater