JP2001201270A - Method and apparatus for treating exhaust gas - Google Patents

Method and apparatus for treating exhaust gas

Info

Publication number
JP2001201270A
JP2001201270A JP2000007458A JP2000007458A JP2001201270A JP 2001201270 A JP2001201270 A JP 2001201270A JP 2000007458 A JP2000007458 A JP 2000007458A JP 2000007458 A JP2000007458 A JP 2000007458A JP 2001201270 A JP2001201270 A JP 2001201270A
Authority
JP
Japan
Prior art keywords
exhaust gas
furnace
rotary kiln
melting
scrap
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.)
Granted
Application number
JP2000007458A
Other languages
Japanese (ja)
Inventor
Hisatsugu Kitaguchi
久継 北口
Toshiyuki Irita
俊幸 入田
Atsushi Eba
篤 江場
Kosuke Yamashita
幸介 山下
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP2000007458A priority Critical patent/JP2001201270A/en
Publication of JP2001201270A publication Critical patent/JP2001201270A/en
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

PROBLEM TO BE SOLVED: To remove dioxins highly and economically from an exhaust gas of a melting furnace for melting scraps. SOLUTION: A rotary kiln type preheating furnace 2, having a burner for burning a combustible component in the exhaust gas is provided in an upper part of the melting furnace 1 for melting the scraps, and a wet dust collector 3 having the functions of water-cooling and dust removal of the exhaust gas, is provided directly behind the rotary kiln type preheating furnace 2. In the rotary kiln type preheating furnace 2, the scraps prior to being charged to the melting furnace is heated to 800 deg.C or higher, the oxygen concentration in the exhaust gas at an exhaust gas outlet of the rotary kiln type preheating furnace 2 is controlled to be not higher than 1%, and the temperature of the exhaust gas at an inlet of the wet type dust collector 3 is controlled at 400 deg.C or higher by controlling the combustion of the burner.

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、スクラップを溶解
する電気炉などの溶解炉から排出される排ガス中のダイ
オキシン等の有害物質を除去する装置および方法に関す
るものである。
The present invention relates to an apparatus and a method for removing harmful substances such as dioxin in exhaust gas discharged from a melting furnace such as an electric furnace for melting scrap.

【0002】[0002]

【従来の技術】大気汚染防止法施行令改正(1997年12月1
日施行)により、ダイオキシンに対して製鋼用電気炉に
関しても新設電気炉で0.5ng-TEQ/Nm3以下の排出基準が
設けられた。規制に対応するためには、スクラップを溶
解する溶解炉におけるダイオキシン発生の原因がスクラ
ップに混入した有機物および塩化物の燃焼であるため、
事前の除去が困難であり、発生源対策よりも排ガス中の
ダイオキシンを効率よく低コストで除去する技術の方が
工業的に重要であると考えられる。
[Prior Art] Amendment of the Air Pollution Control Law enforcement order (December 1, 1997
By day enforcement), 0.5ng-TEQ / Nm 3 or less emission standards established electric furnace regard steelmaking electric furnace is provided for dioxin. In order to comply with regulations, the cause of dioxin generation in the melting furnace that melts scrap is combustion of organic matter and chloride mixed in scrap,
Preliminary removal is difficult, and it is considered that a technique for removing dioxin in exhaust gas efficiently and at low cost is more industrially important than a countermeasure for a source.

【0003】スクラップを溶解する溶解炉の大部分は電
気炉であるが、電気炉では、溶解時間の短縮や省エネル
ギーを目的として溶解炉の排ガスやバーナー炊きにより
スクラップの予熱を実施している。最近のアーク炉製鋼
法の進歩第3版p.231(日本鉄鋼協会編,1993年)によれ
ば、通常の電気炉では主にバケットを使用して酸素濃度
数%、温度300℃から700℃の排ガスでスクラップを予熱
するため、予熱後の排ガスの温度が100℃から300℃程度
になる。一般に250℃から350℃の温度領域がダイオキシ
ンの生成温度領域であるため(竹内正雄、第14回日本燃
焼学会−JFRC合同研究会予稿集[1999])、この予熱時に
スクラップに混入した有機物および塩化物の燃焼により
スクラップ予熱中にダイオキシンが発生する。排ガス温
度をダイオキシン発生温度領域以上にすることによりダ
イオキシンの発生が抑制できるが、高温にするとバケッ
トの歪みや変形が生じるため、排ガス温度を上げられな
い。このため、電気炉排ガス処理として、例えば、電気
製鋼第70巻第2号130ページの図4に記載されているよう
に、スクラップ溶解電気炉より排出される排ガスは、燃
焼装置で排ガス中の有機分を燃焼分解後、冷却塔でノズ
ルより噴霧される微細な水滴と接触させ、排ガス中に含
まれる有害物質の除去反応に適した温度まで水冷され
る。この時、温度が低下することによりダイオキシンが
ダストに付着する。水冷された排ガスはバグフィルター
に導入されてダストが捕集され、ダストに付着している
ダイオキシンも同時に除去される。
Most melting furnaces for melting scrap are electric furnaces. In the electric furnace, the scrap is preheated by exhaust gas from a melting furnace or cooking with a burner for the purpose of shortening the melting time and saving energy. According to the recent progress in arc furnace steelmaking method, 3rd edition, p.231 (edited by the Iron and Steel Institute of Japan, 1993), ordinary electric furnaces mainly use a bucket and have an oxygen concentration of several percent and a temperature of 300 ° C to 700 ° C. Since the scrap is preheated by the exhaust gas, the temperature of the exhaust gas after the preheating becomes from 100 ° C. to 300 ° C. In general, the temperature range of 250 ° C to 350 ° C is the temperature range for dioxin formation (Masao Takeuchi, Proceedings of the 14th Joint Research Meeting of the Japan Combustion Society-JFRC [1999]). Dioxin is generated during preheating of scrap due to the burning of material. The generation of dioxin can be suppressed by setting the exhaust gas temperature to be equal to or higher than the dioxin generation temperature range. For this reason, as described in FIG. 4 on page 130 of Vol. 70, No. 2, Electric Steelmaking Inc., the exhaust gas discharged from the scrap melting electric furnace is treated by an electric furnace in the combustion apparatus. After combustion and decomposition, the cooling tower is brought into contact with fine water droplets sprayed from a nozzle in a cooling tower, and water-cooled to a temperature suitable for a reaction for removing harmful substances contained in exhaust gas. At this time, dioxin adheres to the dust as the temperature decreases. The water-cooled exhaust gas is introduced into a bag filter to collect dust, and dioxin adhering to the dust is removed at the same time.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、燃焼−
水冷−除塵によるダイオキシン類の抑制技術では、(1)
燃焼塔と冷却塔を設ける必要があり、設備費や燃料費等
費用が割高になる、(2)水冷は水の蒸発潜熱を利用して
排ガスを冷却するため排ガス中の水分濃度が高くなり、
集塵機(バグフィルター)で結露し、ダストの凝縮固
化、硫酸塩や塩化物の溶解による装置腐食を引き起こす
一因となる等の課題があった。
However, combustion-
Water-cooling and dust-reduction technology for dioxins control includes (1)
It is necessary to provide a combustion tower and a cooling tower, which makes equipment and fuel costs more expensive. (2) Water cooling uses the latent heat of vaporization of water to cool the exhaust gas, which increases the water concentration in the exhaust gas.
There were problems such as dew condensation in the dust collector (bag filter), which contributed to condensation of the dust and solidification of the device due to dissolution of sulfates and chlorides.

【0005】そこで本発明は、上記従来技術の問題点を
解消し、ダイオキシン類を高度かつ経済的に除去できる
スクラップを溶解する溶解炉の排ガス処理装置および方
法を提供することを目的とする。
Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide an exhaust gas treatment apparatus and method for a melting furnace that dissolves scrap that can remove dioxins in a high-level and economical manner.

【0006】[0006]

【課題を解決するための手段】すなわち、本発明は、
(1)スクラップを溶解する溶解炉の上部に排ガス中の
可燃成分燃焼用バーナーを備えたロータリーキルン型予
熱炉を設置し、該ロータリーキルン型予熱炉の直後に排
ガスの水冷・除塵機能を有する湿式集塵機を配置したこ
とを特徴とする排ガス処理装置、ならびに(2)前記ロ
ータリーキルン型予熱炉において、前記バーナーの燃焼
を制御することにより溶解炉装入前のスクラップを80
0℃以上に、ロータリーキルン型予熱炉排ガス出口にお
ける排ガス中の酸素濃度を1%以下に、および湿式集塵
機入口における排ガス温度を400℃以上にすることを
特徴とする前記(1)の排ガス処理装置を用いる排ガス
処理方法である。
That is, the present invention provides:
(1) A rotary kiln type preheating furnace equipped with a burner for combustible components in exhaust gas is installed above a melting furnace for melting scrap, and a wet dust collector having a water cooling / dust removing function of exhaust gas is provided immediately after the rotary kiln type preheating furnace. And (2) in the rotary kiln type preheating furnace, by controlling the combustion of the burner, the scrap before charging the melting furnace is reduced to 80%.
The exhaust gas treatment apparatus according to (1), wherein the oxygen concentration in the exhaust gas at the exhaust port of the rotary kiln type preheating furnace is set to 1% or less, and the exhaust gas temperature at the entrance of the wet dust collector is set to 400 ° C. or more. This is the exhaust gas treatment method used.

【0007】[0007]

【発明の実施の形態】スクラップを溶解する溶解炉にお
けるダイオキシン発生の主因が、スクラップ予熱時の排
ガス温度および雰囲気が十分に制御されていないことに
起因することを見いだし、本発明に至った。
BEST MODE FOR CARRYING OUT THE INVENTION The present inventors have found that the main cause of dioxin generation in a melting furnace for melting scrap is that the exhaust gas temperature and atmosphere during preheating of the scrap are not sufficiently controlled.

【0008】図1に示すフロー例に基づき本発明を具体
的に説明する。
The present invention will be specifically described based on a flow example shown in FIG.

【0009】スクラップを溶解する電気溶解炉、転炉型
溶解炉等の溶解炉1から排出される排ガスaは溶解炉上
部に設置したロータリーキルン型予熱炉2に導入され、
ロータリーキルン型予熱炉2中を対向して溶解炉1に移
動するスクラップbを加熱する。加熱後の排ガスa'はロ
ータリーキルン型予熱炉2の直後に設置された湿式集塵
機3に導かれ、湿式集塵機3内で水により冷却されると
ともにダストが除去され、清浄ガスa''として煙突4よ
り放出される。湿式集塵機3で除去されたダストcは集
塵水dとともにシックナー5に導かれ、沈降分離により
ダストc'と清浄水d'に分離され、ダストc'は系外に排出
され、清浄水d'は湿式集塵機3に戻される。
Exhaust gas a discharged from a melting furnace 1 such as an electric melting furnace or a converter melting furnace for melting scrap is introduced into a rotary kiln type preheating furnace 2 installed above the melting furnace.
A scrap b moving to the melting furnace 1 facing the inside of the rotary kiln type preheating furnace 2 is heated. Exhaust gas a 'after heating is guided to a wet dust collector 3 installed immediately after the rotary kiln type preheating furnace 2, where it is cooled by water in the wet dust collector 3 and dust is removed. Released. The dust c removed by the wet dust collector 3 is guided to the thickener 5 together with the dust collection water d, is separated into dust c 'and clean water d' by sedimentation and separation, and the dust c 'is discharged out of the system and the clean water d' Is returned to the wet dust collector 3.

【0010】ダイオキシンは主としてスクラップの予熱
過程(一部溶解過程)で発生するが、従来のバケットに
よる予熱では、バケットの歪みや変形を防止するため高
温予熱ができず、かつ、酸素濃度も高いため、ダイオキ
シンの発生が多くなった。本発明では予熱にロータリー
キルン型予熱炉を採用し、スクラップを転動させながら
加熱することによりスクラップの融着を防止し、高温の
予熱を可能とした。スクラップの予熱温度はダイオキシ
ンの分解のため800℃以上にする。また、予熱中の酸素
濃度を溶解炉の密閉化、ロータリーキルン型予熱炉での
燃焼用酸素量制御により低減する。具体的には、排ガス
条件をロータリーキルン型予熱炉出口における排ガス中
の酸素濃度を1%以下に、かつ、ロータリーキルン型予
熱炉の後段に位置する湿式集塵機の入口における排ガス
温度を400℃以上に制御することにより、ダイオキシン
発生温度、酸素濃度領域を回避でき、スクラップ予熱時
のダイオキシン発生を大幅に抑制できる。ロータリーキ
ルン型予熱炉から排出された排ガスは、煙道での徐冷に
よる再生成を抑制するために、湿式集塵機によりダスト
除去と共に水冷を行う。水冷を行うことにより排ガスが
急速に冷却されるため、ダイオキシンの再生成が抑制さ
れ、かつ冷却の過程でダイオキシンがダストに吸着し、
ダストとともに系外に排出される。系外に排出したダス
トは、加熱脱塩素または溶融処理等の方法によりダイオ
キシンが除去され、無害化される。
[0010] Dioxin is mainly generated in the preheating process (partial melting process) of scrap. However, in the conventional preheating using a bucket, high temperature preheating cannot be performed to prevent distortion and deformation of the bucket, and the oxygen concentration is high. , The generation of dioxin increased. In the present invention, a rotary kiln-type preheating furnace is employed for preheating, and the fusion of the scrap is prevented by heating while rolling the scrap, thereby enabling high-temperature preheating. The preheating temperature of the scrap is set to 800 ° C or higher to decompose dioxin. The oxygen concentration during preheating is reduced by sealing the melting furnace and controlling the amount of oxygen for combustion in the rotary kiln type preheating furnace. Specifically, the exhaust gas conditions are controlled so that the oxygen concentration in the exhaust gas at the outlet of the rotary kiln type preheating furnace is 1% or less, and the exhaust gas temperature at the inlet of the wet dust collector located downstream of the rotary kiln type preheating furnace is 400 ° C. or more. Thereby, the dioxin generation temperature and the oxygen concentration region can be avoided, and the generation of dioxin during scrap preheating can be greatly suppressed. Exhaust gas discharged from the rotary kiln type preheating furnace is subjected to water removal and water cooling by a wet dust collector in order to suppress regeneration by slow cooling in the flue. Exhaust gas is rapidly cooled by water cooling, so dioxin regeneration is suppressed, and dioxin adsorbs to dust during the cooling process.
It is discharged outside the system together with dust. Dioxin is removed from the dust discharged out of the system by a method such as heat dechlorination or melting treatment, and the dust is rendered harmless.

【0011】ロータリーキルン型予熱炉によるスクラッ
プの800℃以上の加熱と雰囲気制御および湿式集塵機に
よる水冷・除塵を実施することにより、新設電気炉での
排出基準0.5ng-TEQ/Nm3以下の達成が可能となる。
[0011] By heating the scrap at 800 ° C or more with a rotary kiln type preheating furnace, controlling the atmosphere, and performing water cooling and dust removal with a wet dust collector, it is possible to achieve a discharge standard of 0.5 ng-TEQ / Nm 3 or less in a newly installed electric furnace. Becomes

【0012】ロータリーキルン型予熱炉でのスクラップ
の加熱には、排ガスの顕熱および潜熱を利用する。潜熱
利用のためロータリーキルン型予熱炉にバーナーを設
け、キルン内で排ガス燃焼を実施する。また、排ガスの
熱量が不足する場合は、キルン内で燃料を燃焼させ熱量
を補うことにより800℃以上の加熱を実現する。
The heating of the scrap in the rotary kiln type preheating furnace utilizes the sensible heat and the latent heat of the exhaust gas. A burner is installed in the rotary kiln type preheating furnace to use latent heat, and exhaust gas combustion is performed in the kiln. When the calorific value of the exhaust gas is insufficient, the fuel is burned in the kiln to supplement the calorific value, thereby realizing heating at 800 ° C or more.

【0013】湿式集塵機は、排ガスの水冷とともに除塵
ができる方式であれば方式は問わない。例えば、溜水式
洗浄集塵装置、加圧水式洗浄集塵装置、充填層式洗浄集
塵装置、回転式洗浄集塵装置等を用いることができる。
The wet dust collector may be of any type as long as it can remove dust with water cooling of exhaust gas. For example, it is possible to use a reservoir type cleaning dust collecting device, a pressurized water type cleaning dust collecting device, a packed bed type cleaning dust collecting device, a rotary cleaning dust collecting device, and the like.

【0014】[0014]

【実施例】ロータリーキルン型予熱炉と湿式集塵機を用
いて、スクラップを溶解する溶解炉排ガスの処理を、ロ
ータリーキルン型予熱炉におけるスクラップ温度が850
℃、ロータリーキルン型予熱炉排ガス出口における排ガ
ス中酸素濃度が0.5%、湿式集塵機入口での排ガス温度
が500℃の条件で実施した。このときの湿式集塵機出口
でのダイオキシン濃度は0.1ng/Nm3であり、新設電気炉
の排出基準(0.5ng/Nm3)以下となった。
[Example] Using a rotary kiln-type preheating furnace and a wet dust collector, the treatment of the melting furnace exhaust gas for melting the scrap was carried out at a scrap temperature of 850 in the rotary kiln-type preheating furnace.
C., the oxygen concentration in the exhaust gas at the exhaust gas outlet of the rotary kiln type preheating furnace was 0.5%, and the exhaust gas temperature at the inlet of the wet dust collector was 500 ° C. The dioxin concentration at the outlet of the wet dust collector at this time was 0.1 ng / Nm 3 , which was below the emission standard (0.5 ng / Nm 3 ) for the newly installed electric furnace.

【0015】[0015]

【発明の効果】本発明により、スクラップ予熱を行いな
がら、ダイオキシンの発生を抑制でき、燃焼−水冷−バ
グフィルターおよび活性炭や触媒のような高度な排ガス
処理設備を用いることなくダイオキシンの効率的な除去
が可能となる等、効率的にも経済的にも優れた排ガス処
理を行うことが可能となる。
According to the present invention, the generation of dioxin can be suppressed while preheating the scrap, and the dioxin can be efficiently removed without using a combustion-water cooling-bag filter and advanced exhaust gas treatment equipment such as activated carbon and catalyst. This makes it possible to perform exhaust gas treatment that is both efficient and economical.

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

【図1】本発明の排ガス処理装置の一例を示す図であ
る。
FIG. 1 is a diagram showing an example of an exhaust gas treatment device of the present invention.

【符号の説明】[Explanation of symbols]

1 溶解炉 2 ロータリーキルン型予熱炉 3 湿式集塵機 4 煙突 5 シックナー 6 スクラップホッパー a,a' 排ガス a'' 清浄ガス b スクラップ c,c' ダスト d 集塵水 d' 清浄水 DESCRIPTION OF SYMBOLS 1 Melting furnace 2 Rotary kiln type preheating furnace 3 Wet dust collector 4 Chimney 5 Thickener 6 Scrap hopper a, a 'Exhaust gas a' 'Clean gas b Scrap c, c' Dust d Collected water d 'Clean water

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) F23G 7/06 101 C22B 1/00 601 // C22B 1/00 601 7/00 F 7/00 B01D 53/34 134E (72)発明者 江場 篤 富津市新富20−1 新日本製鐵株式会社技 術開発本部内 (72)発明者 山下 幸介 富津市新富20−1 新日本製鐵株式会社技 術開発本部内 Fターム(参考) 3K078 AA05 AA08 AA09 BA19 BA26 CA02 CA24 4D002 AA21 BA05 BA13 BA14 DA35 EA02 GA03 GB02 GB03 4D032 AA01 AC01 AC21 AC31 AD01 BB07 4K001 AA10 BA22 FA10 FA14 GA07 GA16 GB09 GB10 GB11 4K056 AA05 AA14 CA02 DA36 DB14 FA02 FA08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F23G 7/06 101 C22B 1/00 601 // C22B 1/00 601 7/00 F 7/00 B01D 53 / 34 134E (72) Inventor Atsushi Eba 20-1 Shintomi, Futtsu-shi Nippon Steel Corporation Technology Development Division (72) Inventor Kosuke Yamashita 20-1 Shintomi, Futtsu-shi Technology Development Division Nippon Steel Corporation F term (reference) 3K078 AA05 AA08 AA09 BA19 BA26 CA02 CA24 4D002 AA21 BA05 BA13 BA14 DA35 EA02 GA03 GB02 GB03 4D032 AA01 AC01 AC21 AC31 AD01 BB07 4K001 AA10 BA22 FA10 FA14 GA07 GA16 GB09 GB10 GB05 AKA14 FA02

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 スクラップを溶解する溶解炉の上部に排
ガス中の可燃成分燃焼用バーナーを備えたロータリーキ
ルン型予熱炉を設置し、該ロータリーキルン型予熱炉の
直後に排ガスの水冷・除塵機能を有する湿式集塵機を配
置したことを特徴とする排ガス処理装置。
1. A rotary kiln-type preheating furnace equipped with a burner for combustible components in exhaust gas is installed above a melting furnace for melting scrap, and a wet type water-cooling / dust removing function of exhaust gas is provided immediately after the rotary kiln-type preheating furnace. An exhaust gas treatment device comprising a dust collector.
【請求項2】 前記ロータリーキルン型予熱炉におい
て、前記バーナーの燃焼を制御することにより溶解炉装
入前のスクラップを800℃以上に、ロータリーキルン
型予熱炉排ガス出口における排ガス中の酸素濃度を1%
以下に、および湿式集塵機入口における排ガス温度を4
00℃以上にすることを特徴とする請求項1記載の排ガ
ス処理装置を用いる排ガス処理方法。
2. In the rotary kiln type preheating furnace, the scrap before charging the melting furnace is controlled to 800 ° C. or more by controlling the combustion of the burner, and the oxygen concentration in the exhaust gas at the exhaust gas outlet of the rotary kiln type preheating furnace is reduced to 1%.
Below, and the exhaust gas temperature at the wet dust collector inlet was 4
An exhaust gas treatment method using the exhaust gas treatment device according to claim 1, wherein the temperature is set to 00 ° C or higher.
JP2000007458A 2000-01-17 2000-01-17 Method and apparatus for treating exhaust gas Granted JP2001201270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000007458A JP2001201270A (en) 2000-01-17 2000-01-17 Method and apparatus for treating exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000007458A JP2001201270A (en) 2000-01-17 2000-01-17 Method and apparatus for treating exhaust gas

Publications (1)

Publication Number Publication Date
JP2001201270A true JP2001201270A (en) 2001-07-27

Family

ID=18535844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000007458A Granted JP2001201270A (en) 2000-01-17 2000-01-17 Method and apparatus for treating exhaust gas

Country Status (1)

Country Link
JP (1) JP2001201270A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968675A (en) * 2014-05-20 2014-08-06 莱芜钢铁集团有限公司 Low-temperature smoke pre-dedusting device and method for rotary hearth furnace
CN105091578A (en) * 2015-08-31 2015-11-25 苏州富通高新材料科技股份有限公司 Fusion device used for panel processing
US11053559B2 (en) * 2016-03-31 2021-07-06 Taiyo Nippon Sanso Corporation Melting and refining furnace for cold iron source and method of operating melting and refining furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968675A (en) * 2014-05-20 2014-08-06 莱芜钢铁集团有限公司 Low-temperature smoke pre-dedusting device and method for rotary hearth furnace
CN105091578A (en) * 2015-08-31 2015-11-25 苏州富通高新材料科技股份有限公司 Fusion device used for panel processing
CN105091578B (en) * 2015-08-31 2017-05-17 苏州富通高新材料科技股份有限公司 Fusion device used for panel processing
US11053559B2 (en) * 2016-03-31 2021-07-06 Taiyo Nippon Sanso Corporation Melting and refining furnace for cold iron source and method of operating melting and refining furnace

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