JPH09235559A - Utilization of residue and waste in terms of material and energy in upright furnace - Google Patents

Utilization of residue and waste in terms of material and energy in upright furnace

Info

Publication number
JPH09235559A
JPH09235559A JP30643396A JP30643396A JPH09235559A JP H09235559 A JPH09235559 A JP H09235559A JP 30643396 A JP30643396 A JP 30643396A JP 30643396 A JP30643396 A JP 30643396A JP H09235559 A JPH09235559 A JP H09235559A
Authority
JP
Japan
Prior art keywords
pyrolysis
furnace
coke
upright furnace
upright
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP30643396A
Other languages
Japanese (ja)
Inventor
Manfred Dr Schingnitz
シングニッツ マンフレート
Peter Goehler
ゲーラー ペーター
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noeru Kaa L C Energ & Umubuerutotehiniku GmbH
Noell KRC Energie und Umwelttechnik GmbH
Original Assignee
Noeru Kaa L C Energ & Umubuerutotehiniku GmbH
Noell KRC Energie und Umwelttechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noeru Kaa L C Energ & Umubuerutotehiniku GmbH, Noell KRC Energie und Umwelttechnik GmbH filed Critical Noeru Kaa L C Energ & Umubuerutotehiniku GmbH
Publication of JPH09235559A publication Critical patent/JPH09235559A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/006—General arrangement of incineration plant, e.g. flow sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/301—Treating pyrogases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/302—Treating pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/303—Burning pyrogases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/304—Burning pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/60—Separating
    • F23G2201/603—Separating recyclable material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/80—Shredding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/201—Waste heat recuperation using the heat in association with another installation with an industrial furnace
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/32—Technologies related to metal processing using renewable energy sources

Abstract

PROBLEM TO BE SOLVED: To utilize residues, wastes and low-calorific fuels in terms of material and energy in an upright furnace, esp. cupola or blast furnace.
SOLUTION: Residues and wastes are heated to 300-800°C in a pyrolytic reactor 3 to conduct thermal pretreatment thereof. At this time, pyrolytic coke and pyrolytic gas are produced, and at least part of the pyrolytic coke is then mechanically treated into fine granules, which, in turn, are fed, together with the pyrolytic gas, into an upright furnace. This method is applicable anywhere, namely, at sites intended to utilize residues, wastes and/or low-calorific fuels in terms of material and energy in association with the upright units in the metallurgical industry or building material industry or to cut part of fuel cost and/or feedstock cost in such units.
COPYRIGHT: (C)1997,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、直立炉、とくにキ
ュポラまたは高炉中で残留物および廃棄物を材料的およ
びエネルギー的に利用する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for material and energy utilization of residues and wastes in an upright furnace, especially a cupola or a blast furnace.

【０００２】本発明は、残留物および廃棄物ならびに低
発熱量燃料を冶金工業または建築材料工業の直立炉装置
と関連して、たとえば高炉工場においてエネルギー的お
よび材料的に利用するかまたはこの種の現存する装置か
ら燃料費ないしは原料費の一部を軽減しようとする所で
は何処でも適用できる。The present invention makes use of residues and wastes and low calorific value fuels in the context of upright furnace equipment in the metallurgical industry or the building materials industry, for example in a blast furnace plant, energetically and materially or of this kind. It can be applied anywhere you want to reduce some fuel or raw material costs from existing equipment.

【０００３】残留物および廃棄物とは、家庭ごみ、事業
所ごみ、市町村および工場排水浄化汚泥、有機成分を有
する消費された工業貨物の処理からの残部、たとえばケ
ーブル、古自動車、エレクトロニクス屑、プラスチック
および包装材料の廃品の集積所からの直接リサイクルで
きない残部ならびに殊にリサイクル経済の種々の技術的
方法からの残品を表わす。残留物および廃棄物のこのカ
テゴリーには、油性または油含有冷却剤、滑剤または潤
滑剤が付着した圧延および鍛造スケールおよび金属加工
屑が入る。低発熱量燃料は、たとえば生物燃料、たとえ
ば藁、木材、草、葉、エネルギー的利用のための特殊な
植物、ならびに汚染された可燃性ガス、たとえば種々の
出所の堆積所ガスおよび浄化場ガスである。Residues and wastes include household refuse, business refuse, municipal and industrial wastewater purification sludge, the balance from the processing of consumed industrial cargo with organic constituents, such as cables, old cars, electronics scraps, plastics. And non-recyclable remnants from the waste collection point of packaging materials, and in particular remnants from various technological methods of recycling economy. This category of residue and waste includes rolling and forging scales and metalworking debris with oily or oil-containing coolants, lubricants or lubricants. Low calorific value fuels are, for example, biofuels such as straw, wood, grass, leaves, special plants for energy use, and pollutant combustible gases, such as sediment and purification plant gases of various origins. is there.

【０００４】[0004]

【従来の技術】高炉中で残留物および廃棄物を材料的お
よびエネルギー的に利用する方法は既に公知である。2. Description of the Related Art Methods for material and energy utilization of residues and wastes in blast furnaces are already known.

【０００５】それで、ドイツ国特許（ＤＥ）３９１１９
８２Ａ１号には、廃棄物を直立炉の送風入口の範囲内で
直接燃焼帯に供給する、廃棄物の処分方法が記載され
る。しかし、問題になる残留物および廃棄物の多くは、
直接直立炉の燃焼帯に供給できないかまたは必要な均一
性で供給できないような性状で存在する。German patent (DE) 39119
No. 82A1 describes a waste disposal method in which waste is fed directly into the combustion zone within the blast inlet of an upright furnace. But much of the residue and waste that matters
It exists in such a manner that it cannot be supplied directly to the combustion zone of an upright furnace or cannot be supplied with the required uniformity.

【０００６】ドイツ国特許（ＤＥ）４１０４２５２Ａ１
号は、廃棄物を流動状態で、送風羽口を介して直立炉、
殊に高炉に供給するこの種の他の方法を記載する。この
場合、流動状態とは、直立炉に供給される材料が液体と
して、ガスないしは蒸気としてまたはキャリヤ液ないし
はキャリヤガス中に懸濁した細粒状固体として存在しな
ければならないことを表わす。しかしこれは、既に述べ
たように、たとえば普通の家庭ごみの場合には与えられ
ていない。German Patent (DE) 4104252A1
No. is an upright furnace through the blast tuyere, with the waste in a fluidized state,
In particular, another method of this kind for feeding the blast furnace is described. In this case, the fluid state means that the material fed to the upright furnace must be present as a liquid, as a gas or vapor or as a carrier liquid or as a finely divided solid suspended in a carrier gas. However, this is not given, for example, in the case of ordinary household waste, as already mentioned.

【０００７】さらに一連の廃棄物、殊に生物燃料は直立
炉法においては屡々好ましくない比較的高い含水量で汚
染されている。In addition, a series of wastes, especially biofuels, are contaminated with relatively high water contents, which is often undesirable in upright furnace processes.

【０００８】[0008]

【発明が解決しようとする課題】従って本発明の課題
は、残留物および廃棄物および低発熱量燃料を直立炉、
殊に高炉中で材料的およびエネルギー的に利用するた
め、かかる材料ならびに流動状態で存在しない材料およ
び簡単な乾燥および粉砕工程でかかる状態に変えること
のできない材料をもその性状とは独立に利用することの
できる方法を開発することである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to remove residues and waste and low calorific value fuels in upright furnaces,
In particular, for material and energy utilization in the blast furnace, such materials as well as those which do not exist in the fluid state and which cannot be converted into such a state by simple drying and grinding processes are used independently of their properties. It is to develop a possible method.

【０００９】[0009]

【課題を解決するための手段】この課題は、請求項１の
特徴部によって解決される。有利な実施態様は請求項２
〜１２に記載されている。This object is achieved by the features of claim 1. An advantageous embodiment is claim 2.
~ 12.

【００１０】本発明による解決法は、残留物および廃棄
物ならびに低発熱量燃料を熱分解反応器中で熱的に前処
理することを意図する。その際、これらの材料は完全ま
たは十分な空気ないしは酸素の遮断下に約３００〜８０
０℃の温度に加熱される。これらの条件下に有機成分は
熱分解され、ガス状および蒸気状分解生成物−下記に熱
分解ガスと記載する−が脱離される。固体のコークス状
残留物−下記に熱分解コークスと呼称する−が残留し、
このものは装入物の無機成分をも一緒に収容する。The solution according to the invention contemplates the thermal pretreatment of residues and waste and low calorific value fuels in pyrolysis reactors. In doing so, these materials should be fully or fully exposed to air or oxygen at about 300-80.
Heat to a temperature of 0 ° C. Under these conditions, the organic components are pyrolyzed and the gaseous and vaporous decomposition products—described below as pyrolysis gas—are desorbed. A solid coke residue--referred to below as pyrolysis coke--remains,
It also contains the inorganic constituents of the charge.

【００１１】熱分解コークスは、公知の機械的処理方
法、たとえば篩別循環路を有するロールミルを用い少な
くとも部分的に細粒状にされる。さらに、この細粒状に
された熱分解コークスおよび熱分解ガスが直立炉に供給
される。The pyrolysis coke is at least partially comminuted using known mechanical treatment methods, for example roll mills with sieving circuits. Further, the finely cracked pyrolysis coke and pyrolysis gas are supplied to an upright furnace.

【００１２】通例、直立炉への供給はほぼ送風羽口の高
さ、好ましくは送風羽口中またはこれを通して、炉の炉
床中へ行われる。直立炉のこの範囲内を支配する温度に
おいて、吹き込まれる熱分解コークスの有機成分ならび
に熱分解ガスの可燃性成分は直立炉に供給される送風の
一部で燃焼する。装入物中の通常過剰のコークスにより
一次的に形成する二酸化炭素は、既に一次的に一酸化炭
素が形成しない限り、直ちに二酸化炭素に還元される。
同様に、熱分解コークスおよび熱分解ガス中に結合して
いる水素ならびに熱分解ガス中に含まれている水蒸気は
ガス状の水素に変換される。[0012] Typically, the feed to the upright furnace is made into the hearth of the furnace at or near the blast tuyere, preferably at or through the blast tuyere. At temperatures prevailing in this range of the upright furnace, the organic components of the pyrolysis coke blown in as well as the combustible components of the pyrolysis gas burn in part of the blast supplied to the upright furnace. Carbon dioxide, which is primarily formed by the normally excess coke in the charge, is immediately reduced to carbon dioxide, unless carbon monoxide has already been formed primarily.
Similarly, hydrogen bound in the pyrolysis coke and the pyrolysis gas and water vapor contained in the pyrolysis gas are converted to gaseous hydrogen.

【００１３】熱分解コークスおよび熱分解ガスの変換に
よって生成するガスは、残留する（大部分の）送風と、
装入物からのコークスとの反応により生成した残余の形
成ガスと一緒に直立炉中を上向きに上昇し、徐々に下方
に滑落する装入物柱中で経過する反応、たとえば高炉の
鉄鉱石の還元に関与する。熱分解生成物の反応により遊
離する熱量は、平行に装入物を加熱するために利用され
る。相応に、装入物中のコークス分量は低下し、したが
ってコークスは節約することができる。The gas produced by the conversion of pyrolysis coke and pyrolysis gas contains residual (most) blast and
Reactions that take place in a charge column that rises upward in an upright furnace with the remaining forming gas produced by the reaction with coke from the charge and then slides downward, e.g. Involved in reduction. The amount of heat liberated by the reaction of the pyrolysis products is used to heat the charge in parallel. Correspondingly, the amount of coke in the charge is reduced, so that coke can be saved.

【００１４】炉床中を支配する条件下で、有機化合物、
ならびに芳香族化合物およびダイオキシンおよびフラン
を含めて塩素化有機化合物は完全に変換される。炉床中
で形成し、炉胸中を上昇するガスの冷却の間のダイオキ
シンおよびフランの後発的合成は、そこを支配する強い
還元性雰囲気下に排除されている。たとえばドイツ国特
許（ＤＥ）４１０４２５２Ａ１号からも公知であるよう
に、熱分解コークスおよび場合により熱分解ガスにより
連行されるダストの無機成分は溶融し、融液状スラグま
たは液状金属相により収容される。これは、連行される
重金属痕跡についても言える。Under the conditions prevailing in the hearth, organic compounds,
And chlorinated organic compounds including aromatic compounds and dioxins and furans are completely converted. The late synthesis of dioxins and furans during the cooling of the gas forming in the hearth and rising in the hearth has been eliminated under the predominantly strong reducing atmosphere. As is also known, for example from German Patent DE 4104252A1, the inorganic constituents of the dust entrained by the pyrolysis coke and optionally the pyrolysis gas melt and are contained by the molten slag or the liquid metal phase. This also applies to the traces of heavy metal that are carried.

【００１５】細粒状で存在する熱分解コークスは、自体
公知の方法で圧縮空気で供給管により直立炉に供給する
ことができる。通例、この供給管はその都度送風羽口に
接続し、その際送風羽口中を支配する高い空気速度は炉
の炉床中に形成する燃焼帯中での良好な分配および即時
点火を配慮する。The pyrolysis coke, which is present in the form of fine particles, can be fed to the upright furnace by a feed pipe with compressed air in a manner known per se. This feed pipe is usually connected to the blast tuyere each time, the high air velocity prevailing in the blast tuyere allows for good distribution and immediate ignition in the combustion zone that forms in the hearth of the furnace.

【００１６】選択的に、細粒状で存在する熱分解コーク
スは油を撹拌混入してポンプ輸送可能な油−固体懸濁液
を作り、圧縮空気で直立炉の炉床に供給することができ
る。キャリヤ液として必要な油は、たとえば汚染された
廃油、ならびに農業的に生産された植物油、たとえば農
業上の休止面で生産された菜種油であってもよい。Alternatively, the pyrolysis coke, which is present in finely divided form, can be agitated with oil to form a pumpable oil-solid suspension which can be fed with compressed air to the hearth of an upright furnace. The oils required as carrier liquids can be, for example, contaminated waste oils, as well as agriculturally produced vegetable oils, such as agriculturally produced rapeseed oil.

【００１７】有利な実施形においては、熱分解反応器か
ら流出する熱分解ガスは、直立炉に供給される前に、冷
却および凝縮される。その際分離する凝縮液から油相
（“熱分解タール”）および水相を得ることができる。
記載した油相をガス化反応器に加えるのが有利である。
有利に、この油相は油−ダスト懸濁液の製造のために利
用される。原則的に、水相もガス化反応器に供給し、ガ
ス化工程において溶解した有機成分および他の望ましく
ない成分、たとえばＮＨ3を破壊することも可能であ
る。In a preferred embodiment, the pyrolysis gas leaving the pyrolysis reactor is cooled and condensed before being fed to the upright furnace. An oil phase (“pyrolysis tar”) and an aqueous phase can then be obtained from the condensate which separates.
It is advantageous to add the oil phase described to the gasification reactor.
This oil phase is preferably used for the production of oil-dust suspensions. In principle, it is also possible to feed the aqueous phase into the gasification reactor as well, in order to destroy the dissolved organic components and other undesired components such as NH 3 in the gasification process.

【００１８】高い水含量を有する装入物（これは殊に多
くの生物燃料および高い台所の残り屑分量を有するごみ
について言える）の場合には、凝縮液から分離した水相
を、機械的、化学的および／または生物的処理に供給す
るのが有利である。浄化された水は工場内の目的のため
に、たとえば冷却液として利用するかまたは河川に吐出
することができる。本発明のこのような構成は、たとえ
ば直立炉から方法の経過にとり屡々望ましくない水蒸気
が低減されるという利点を提供する。In the case of charges with a high water content, which is especially true for refuse with a large amount of biofuel and high kitchen remnants, the aqueous phase separated from the condensate is mechanically, It is advantageous to feed into chemical and / or biological treatments. The purified water can be used for in-plant purposes, for example as cooling liquid or discharged into a river. Such an arrangement of the invention offers the advantage that, for example, from an upright furnace, often unwanted steam is reduced over the course of the process.

【００１９】屡々、冷却および凝縮は、洗浄剤として水
を用いる洗浄冷却器の形に構成するかまたは冷却および
凝縮のための他の手段のほかに水洗浄を含有する。かか
る構成は、熱分解ガス中に含まれている、廃棄物中の有
機塩素化合物の熱分解により生じた塩化水素ならびに塩
化物塩の蒸気および霧が、直立炉中に導入する前に、熱
分解ガスから分離されるという利点を提供する。Frequently, the cooling and condensation are configured in the form of a wash cooler with water as the cleaning agent or contain water washing in addition to other means for cooling and condensation. Such a configuration is such that the vapor and mist of hydrogen chloride and chloride salt generated by the thermal decomposition of the organic chlorine compound in the waste contained in the thermal decomposition gas are thermally decomposed before being introduced into the upright furnace. It offers the advantage of being separated from the gas.

【００２０】就中家庭ごみ様廃棄物を装入する場合、熱
分解反応器から搬出後の熱分解コークスから、熱分解コ
ークスを破砕する装置の負担を軽減するために、たとえ
ば篩装置に通して、粗大成分を保留するのがたいてい有
利である、それというのも粗大画分中には主に岩石、セ
ラミックおよび煉瓦の破片、ガラスならびに金属成分が
再び見出されるからである。In the case of charging domestic waste such as household waste, in order to reduce the load on the device for crushing the pyrolysis coke after it has been carried out from the pyrolysis reactor, for example, it is passed through a sieve device. It is almost always advantageous to retain the coarse constituents, since mainly rock, ceramic and brick fragments, glass and metallic constituents are found again in the coarse fraction.

【００２１】さらに、たとえば磁石分離および／または
渦流分離によるような自体公知の分離方法を用いて、金
属成分を分離し、別個の利用に供給することも可能であ
る。このために、熱分解コークスから分離した金属成分
を直立炉にその炉口により装入することができる。これ
は原則的に、装入される廃棄物の金属成分をできるだけ
完全に建築目的に使用可能な高炉スラグに変えたい場
合、熱分解コークスの金属成分についても言える。Furthermore, it is also possible to separate the metal components and supply them for separate use, using known separation methods, for example by magnet separation and / or vortex separation. For this reason, the metal components separated from the pyrolysis coke can be charged into the upright furnace by means of its furnace opening. This also applies in principle to the metal constituents of pyrolysis coke, when it is desired to convert the metal constituents of the charged waste into blast furnace slags which can be used for building purposes as completely as possible.

【００２２】多くの場合、熱分解コークスを十分な範囲
にまたは一部分集塊させ（たとえばペレタイザーで）か
つ集塊を直立炉にその炉口により装入するのが経済的に
有利である。しかし、本方法のこの構成においては、熱
分解における適当な温度制御により熱分解コークス中の
揮発性成分の僅かな残量を配慮すべきである。In many cases it is economically advantageous to agglomerate the pyrolysis coke to a sufficient extent or partly (for example with a pelletizer) and to charge the agglomerate into an upright furnace by its throat. However, in this configuration of the process, the slight residual amount of volatile components in the pyrolysis coke should be taken into account by appropriate temperature control in the pyrolysis.

【００２３】最後に、直立炉中に生じる炉頂ガスを、場
合により浄化工程後に、熱分解反応炉を加熱するために
利用することによって、直立炉と熱分解反応炉との他の
結合が可能である。Finally, the top gas produced in the upright furnace is used to heat the pyrolysis reactor, optionally after a purification step, so that another connection between the upright furnace and the pyrolysis reactor is possible. Is.

【００２４】本発明方法を１実施例および添付の略図に
つき詳説する。The method of the present invention will be described in detail with reference to one embodiment and the accompanying schematic drawings.

【００２５】[0025]

【実施例】本発明の多数の構成および適用事例を代表す
る例は、精錬所の周囲において生じる市町村の残留ごみ
および事業所ごみを材料的およびエネルギー的に利用す
るための高炉の利用に関する。The examples, which represent a number of constructions and applications of the invention, relate to the use of blast furnaces for the material and energy use of municipal and industrial waste generated around smelters.

【００２６】供給されかつごみバンカー中に中間貯蔵さ
れたごみは、クラッシャー２中で１個の大きさ最大約１
００ｍｍに予備破砕され、装入装置により間接的に加熱
されるロータリーキルンとして構成された熱分解反応器
３に装入される。高炉運転からの炉頂ガスで加熱するこ
とにより、ごみは空気遮断下に約５００℃の最終温度に
加熱される。その際、ごみの有機成分は熱分解を受け、
炭化水素および水蒸気で汚染された熱分解ガスおよびコ
ークス様の脆い固形残留物、熱分解コークスが生じる。The waste that is supplied and intermediately stored in the waste bunker is one piece in the crusher 2 and has a maximum size of about 1 piece.
It is pre-crushed to 00 mm and charged into the pyrolysis reactor 3 configured as a rotary kiln which is indirectly heated by the charging device. By heating with the top gas from the blast furnace operation, the refuse is heated to a final temperature of about 500 ° C. with air exclusion. At that time, the organic components of the garbage undergo thermal decomposition,
Pyrolysis gases and coke-like brittle solid residues, pyrolysis coke, contaminated with hydrocarbons and steam are formed.

【００２７】熱分解コークスはホッパー４中に捕集さ
れ、熱分解ガスは別個に単に略示された冷却および凝縮
装置５に誘導される。The pyrolysis coke is collected in the hopper 4 and the pyrolysis gas is separately directed to a cooling and condensing device 5, which is only shown schematically.

【００２８】熱分解コークスは、鉄成分を分離するため
磁石分離器６および渦流分離器７を通過し、該分離器中
で非磁性の軽金属および非鉄金属が得られる。無機成分
を含めて残留する熱分解コークスは、ミル８中で＜０．
５ｍｍの細かさに破砕される。The pyrolysis coke passes through the magnet separator 6 and the vortex separator 7 to separate the iron component, and non-magnetic light metal and non-ferrous metal are obtained in the separator. The residual pyrolysis coke including the inorganic components was <0.
It is crushed to a fineness of 5 mm.

【００２９】油蒸気および水蒸気で汚染された熱分解ガ
スは、冷却および凝縮装置５中で約４０℃に冷却され
る。生じる凝縮液は、別個に図示されていない分離槽中
で油相（図中で熱分解油と記載）および水相（熱分解
水）に分離する。The pyrolysis gas contaminated with oil vapor and water vapor is cooled to about 40 ° C. in the cooling and condensing device 5. The resulting condensate is separated into an oil phase (described as pyrolysis oil in the figure) and an aqueous phase (pyrolysis water) in a separation tank (not shown).

【００３０】冷却され、主要量の油蒸気および水蒸気が
除去された熱分解ガスは、コンプレッサー９により高炉
１２の送風羽口１１中に噴射するのに十分な約４ｂａｒ
の圧力に圧縮され、高炉の送風羽口の途中で、圧縮空気
の密流搬送系１０により供給され、粉砕された熱分解コ
ークスと混合される。こうして熱分解コークスは、高炉
１２にコークスを運搬するための補助的搬送ガスの役目
を引き受ける。平行して、熱分解油はポンプ１３により
送風羽口１１中に開口するランスに供給される。The cooled, pyrolyzed gas from which the major amounts of oil vapor and water vapor have been removed, is approximately 4 bar, sufficient to be injected by the compressor 9 into the blast tuyere 11 of the blast furnace 12.
And is supplied to the compressed air by the dense flow carrier system 10 in the middle of the blast furnace tuyere and mixed with the crushed pyrolysis coke. The pyrolysis coke thus takes on the role of an auxiliary carrier gas for carrying the coke to the blast furnace 12. In parallel, the pyrolyzed oil is supplied by the pump 13 to the lance opening in the blower tuyere 11.

【００３１】本例においては、熱分解ガス、粉砕された
コークスおよび熱分解油は、高炉のすべての送風羽口に
一様に分配される。しかし、熱分解ガスおよび熱分解コ
ークスを高炉の周りに対称的に配置された送風羽口の一
部に供給し、熱分解油を送風羽口の他の部分に供給する
ことも可能である。In this example, the pyrolysis gas, crushed coke and pyrolysis oil are evenly distributed to all blast tuyeres of the blast furnace. However, it is also possible to supply the pyrolysis gas and the pyrolysis coke to a part of the blast tuyere symmetrically arranged around the blast furnace, and to supply the pyrolysis oil to the other part of the blast tuyere.

【００３２】それぞれの場合に、熱風流は、送風羽口中
へ噴射される熱分解生成物の霧化、分配および混合を引
き受け、即時点火を保証する。高炉の燃焼帯中での熱分
解生成物の燃焼によって生成しかつ高炉コークスと接触
してＣＯおよびＨ2に還元するガスは、−公知のように
−高炉法に関与し、熱分解生成物の無機成分は溶融し、
銑鉄および高炉スラグ中に再び見出される。In each case, the hot air stream undertakes atomization, distribution and mixing of the pyrolysis products injected into the blast tuyere, ensuring immediate ignition. Gas reduction produced and in contact with the blast furnace coke to CO and H 2 by combustion of pyrolysis products in a combustion zone of the blast furnace, - as known - involved in the blast furnace method, thermal decomposition products Inorganic components melt,
Found again in pig iron and blast furnace slag.

【００３３】冷却および凝縮装置５中に生じる熱分解水
は機械的および生物的排水処理装置１４に供給され、浄
化された排水として高炉工場内での冷却目的のために使
用される。The pyrolysis water produced in the cooling and condensing device 5 is supplied to a mechanical and biological wastewater treatment device 14 and is used as purified wastewater for cooling purposes in the blast furnace plant.

【００３４】図示されていないが、熱分解コークスから
分離された鉄成分は高炉に正常の装入作業により供給さ
れ、ひいては銑鉄製造のために利用される。生じた軽金
属および非鉄金属画分はさらに分離した後、他の関連す
る製錬所供給に利用のために供給される。Although not shown, the iron component separated from the pyrolysis coke is supplied to the blast furnace by a normal charging operation, and is then utilized for pig iron production. The resulting light metal and non-ferrous metal fractions, after further separation, are fed to other relevant smelter feeds for use.

【００３５】本実施例においては、熱分解反応器と接続
されている、銑鉄２０００ｔ／日の高炉の使用下に、周
辺の郡において生じる約４００００ｔ／年の残留ごみお
よび事業所ごみ量を処理し、その際実際に完全に利用さ
れる。塵芥集積所の廃止による環境汚染の軽減を越え
て、殊にコークスの節約によりおよび塵芥集積所または
別個のごみ焼却装置の操業と比較して明らかに減少し
た、熱分解および熱分解生成物の処理のためおよび高炉
中へ噴射するための作業費により製錬所に対する経済的
利点が生じる。In this example, about 40000 t / year of residual waste and business waste generated in the surrounding counties were treated using a pig iron 2000 t / day blast furnace connected to a pyrolysis reactor. , In that case is actually fully utilized. Beyond mitigating environmental pollution by eliminating dust dumps, especially the reduction of coke and the treatment of pyrolysis and pyrolysis products, which are clearly reduced compared to the operation of dust dumps or separate refuse incinerators. Because of this and the operating costs of injecting into the blast furnace, economic benefits to the smelter arise.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明方法の１実施例を示す系統図FIG. 1 is a system diagram showing an embodiment of the method of the present invention.

【符号の説明】[Explanation of symbols]

１ ごみバンカー ２ クラッシャー ３ 熱分解反応器 ４ ホッパ ５ 冷却および凝縮器 ６ 磁石分離器 ７ 渦流分離器 ８ ミル ９ コンプレッサー １０ 密流搬送系 １１ 送風羽口 １２ 高炉 １３ ポンプ １４ 排水処理装置 1 Waste Bunker 2 Crusher 3 Pyrolysis Reactor 4 Hopper 5 Cooling and Condenser 6 Magnet Separator 7 Eddy Current Separator 8 Mill 9 Compressor 10 Closed Flow Conveyor System 11 Blast Vane 12 Blast Furnace 13 Pump 14 Waste Water Treatment Equipment

Claims (13)

【特許請求の範囲】[Claims] 【請求項１】 直立炉中で残留物および廃棄物ならびに
低発熱量燃料を材料的およびエネルギー的に利用する方
法において、 −残留物および廃棄物を熱分解反応器中で３００〜８０
０℃間の温度に加熱することにより熱的に前処理し、そ
の際熱分解コークスおよび熱分解ガスが生じ、 −熱分解コークスを少なくとも一部、自体公知の機械的
処理方法で細粒状にし、 −かつ細粒状にした熱分解コークスを直立炉に供給する
ことを特徴とする直立炉中で残留物および廃棄物を材料
的およびエネルギー的に利用する方法。1. A method of material and energy utilization of residues and waste and low calorific value fuels in an upright furnace, the residue and waste being 300-80 in a pyrolysis reactor.
Thermally pretreatment by heating to a temperature between 0 ° C., whereby pyrolysis coke and pyrolysis gas are produced, at least part of the pyrolysis coke being granulated by mechanical treatment methods known per se, And a method for material and energy utilization of residues and waste in an upright furnace, characterized in that the finely cracked pyrolysis coke is fed to the upright furnace. 【請求項２】 細粒状にした熱分解コークスを、熱分解
ガスと一緒に直立炉に送風羽口により供給することを特
徴とする請求項１記載の方法。2. The method according to claim 1, wherein the finely cracked pyrolysis coke is fed together with the pyrolysis gas into an upright furnace by means of a blast tuyere. 【請求項３】 細粒状にした熱分解コークスを送風羽口
に圧縮空気により供給することを特徴とする請求項１ま
たは２記載の方法。3. The method according to claim 1 or 2, wherein the finely cracked pyrolysis coke is supplied to the blast tuyere by compressed air. 【請求項４】 細粒状にした熱分解コークスを油−ダス
ト懸濁液として送風羽口に供給することを特徴とする請
求項１または２記載の方法。4. The method according to claim 1, wherein the finely cracked pyrolysis coke is supplied to the blast tuyere as an oil-dust suspension. 【請求項５】 熱分解ガスを、直立炉に供給する前に冷
却および凝縮し、凝縮液を分離することを特徴とする請
求項１記載の方法。5. The method according to claim 1, wherein the pyrolysis gas is cooled and condensed before being fed to the upright furnace to separate the condensate. 【請求項６】 凝縮液を完全にまたは部分的にガス化反
応器に供給することを特徴とする請求項５記載の方法。6. Process according to claim 5, characterized in that the condensate is fed to the gasification reactor completely or partly. 【請求項７】 凝縮液から油相を得、油−ダスト懸濁液
を製造するために利用することを特徴とする請求項４ま
たは５記載の方法。7. Process according to claim 4, characterized in that the oily phase is obtained from the condensate and used to produce an oil-dust suspension. 【請求項８】 凝縮液を水相および油相に分離し、水相
を機械的、化学的および／または生物学的に処理するこ
とを特徴とする請求項５記載の方法。8. A process according to claim 5, characterized in that the condensate is separated into an aqueous phase and an oil phase and the aqueous phase is treated mechanically, chemically and / or biologically. 【請求項９】 熱分解コークスから自体公知の分級工程
により粗成分を保留することを特徴とする請求項１から
８までのいずれか１項記載の方法。9. The method according to claim 1, wherein the crude component is retained from the pyrolysis coke by a classification step known per se. 【請求項１０】 熱分解コークスから自体公知の分離法
により金属成分を分離することを特徴とする請求項１か
ら８までのいずれか１項記載の方法。10. The method according to claim 1, wherein the metal component is separated from the pyrolysis coke by a separation method known per se. 【請求項１１】 熱分解コークスから分離した粗成分お
よび／または金属成分を直立炉にその炉口により装入す
ることを特徴とする請求項９または１０記載の方法。11. The method according to claim 9, wherein the crude component and / or the metal component separated from the pyrolysis coke is charged into an upright furnace by its furnace port. 【請求項１２】 細粒状にした熱分解コークスの少なく
とも一部を団結させ、集塊を直立炉にその炉口により装
入することを特徴とする請求項１記載の方法。12. A process according to claim 1, characterized in that at least a part of the finely divided pyrolysis coke is consolidated and the agglomerates are charged into an upright furnace by means of its furnace mouth. 【請求項１３】 熱分解を実施するために必要なエネル
ギーを直立炉から装入量の燃焼により得ることを特徴と
する請求項１から１２までのいずれか１項記載の方法。13. Process according to claim 1, characterized in that the energy required to carry out the pyrolysis is obtained from an upright furnace by burning a charge.
JP30643396A 1996-02-22 1996-11-18 Utilization of residue and waste in terms of material and energy in upright furnace Pending JPH09235559A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606575.5 1996-02-22
DE1996106575 DE19606575C2 (en) 1996-02-22 1996-02-22 Process for the simultaneous material and energy recovery of residual and waste materials in a blast furnace or cupola

Publications (1)

Publication Number Publication Date
JPH09235559A true JPH09235559A (en) 1997-09-09

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ID=7786093

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Country Link
JP (1) JPH09235559A (en)
DE (1) DE19606575C2 (en)

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NL1024313C2 (en) * 2003-09-17 2005-03-18 Orgaworld B V Thermal treatment of waste to produce fuel or road construction material, by heating it to temperature higher than its combustion temperature inside closed space
DE102008010919A1 (en) 2008-02-25 2009-09-03 Markus Franssen Waste recycling plant for the production of energy
DE102009014410A1 (en) 2008-03-31 2009-10-01 Etag Production Gmbh Waste treatment plant for generating electric energy from combustion gases, has gasifier oven with upper, middle and lower section in connection with gas condenser, in connection with turbine module
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JP2002326076A (en) * 2001-05-08 2002-11-12 Mitsubishi Heavy Ind Ltd Method for treating waste and equipment therefor
JP4702868B2 (en) * 2001-05-08 2011-06-15 三菱重工環境・化学エンジニアリング株式会社 Organic waste processing method and processing equipment
CN110719962A (en) * 2017-06-16 2020-01-21 安赛乐米塔尔公司 Method for operating an ironmaking plant and associated operating plant
JP2020524741A (en) * 2017-06-16 2020-08-20 アルセロールミタル Method of operating steelmaking equipment and related equipment
US11525167B2 (en) 2017-06-16 2022-12-13 Arcelormittal Operating method of an iron making installation and associated operating installation

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