JPS6221847B2 - - Google Patents
Info
- Publication number
- JPS6221847B2 JPS6221847B2 JP5355582A JP5355582A JPS6221847B2 JP S6221847 B2 JPS6221847 B2 JP S6221847B2 JP 5355582 A JP5355582 A JP 5355582A JP 5355582 A JP5355582 A JP 5355582A JP S6221847 B2 JPS6221847 B2 JP S6221847B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- metallurgical furnace
- cooler
- suction pipe
- gas
- 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.)
- Expired
Links
- 238000011084 recovery Methods 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 69
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 239000013064 chemical raw material Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Carbon And Carbon Compounds (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、冶金炉から発生する可燃性ガスを回
収する装置に係り、特に、可燃性ガス（以下CO
ガスについて説明する）を高濃度で回収し、冶金
炉から発生するガスを安全に処理できるようにし
た高濃度COガス回収方法と、冶金炉発生ガス処
理装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for recovering flammable gas generated from a metallurgical furnace, and particularly relates to a device for recovering flammable gas (hereinafter referred to as CO
This invention relates to a method for recovering high-concentration CO gas, which enables the safe treatment of gas generated from metallurgical furnaces, and a device for processing gas generated from metallurgical furnaces.
詳細な説明をするに当たつて、非燃焼方式の排
ガス処理装置を例に現在行われている冶金炉排ガ
ス処理装置の概略を説明する。
In providing a detailed explanation, an outline of currently used metallurgical furnace exhaust gas treatment equipment will be explained using a non-combustion type exhaust gas treatment equipment as an example.
第１図において、冶金炉１で発生したCOガス
は、誘引送風機６によつて冷却器３内に誘引冷却
された後、除塵器５，５′で除塵されガスホルダ
ー８に回収される。 In FIG. 1, CO gas generated in a metallurgical furnace 1 is induced to be cooled in a cooler 3 by an induced fan 6, and then dust removed by dust removers 5, 5' and collected in a gas holder 8.
また、冶金炉１の操業は間欠的に行われる。即
ち、高炉でつくられた溶銑を冶金炉１を傾動させ
て受け入れ（受銑という）たのち冶金炉１を垂直
に起し、酸素吹込みランス４から純酸を吹き込ん
で（吹錬という）精練し、精練完了後、再び冶金
炉１を傾動させて溶銑を取出し（出銑という）、
精練の一行程が完了する。吹錬時は、スカート２
によつて冶金炉１と冷却器３（またはフード）と
の間をシールし外気の吸い込みを少なくしてい
る。 Further, the metallurgical furnace 1 is operated intermittently. That is, the metallurgical furnace 1 is tilted to receive the hot metal produced in the blast furnace (referred to as pig iron receiving), then the metallurgical furnace 1 is raised vertically, and pure acid is blown into it from the oxygen injection lance 4 to smelt it (referred to as blowing). After scouring is completed, the metallurgical furnace 1 is tilted again to take out the hot metal (referred to as tapping).
A process of refinement is completed. Skirt 2 during blowing
This seals between the metallurgical furnace 1 and the cooler 3 (or hood) to reduce the intake of outside air.
吹錬最盛期のCO濃度の高いガスは、ガスホル
ダー８の有価ガスとして回収され、吹錬初期と末
期のCO濃度の低いガスは切換ダンパ９によつて
煙突７に導かれ放出する。 Gas with a high concentration of CO at the peak of blowing is recovered as valuable gas in the gas holder 8, and gas with a low concentration of CO at the beginning and end of blowing is guided to the chimney 7 by a switching damper 9 and released.
近年になつて、冶金炉排ガス処理技術の進歩と
ともに、高濃度のCOガスは、化学原料としてそ
の必要性が著しく高まつてきた。しかしながら、
現在行われている排ガス処理技術では、スカート
２と炉口との間の隙間から外気が侵入し、排ガス
中に10〜20％程度のN2が混入してしまうのが現
状である。 In recent years, with advances in metallurgical furnace exhaust gas treatment technology, the need for highly concentrated CO gas as a chemical raw material has increased significantly. however,
In the currently used exhaust gas treatment technology, outside air enters through the gap between the skirt 2 and the furnace mouth, and about 10 to 20% of N 2 is mixed into the exhaust gas.
即ち、冶金炉固有の問題として、冶金炉炉口部
にノロが堆積してスカートと冶金炉炉口とを密着
させることができず、かつ、COガスの外部への
漏洩は爆発、および、人体への危険があるので、
冷却器内を常に大気圧よりも低くしてCOガスの
外部への漏洩をなくするように運転されているの
で、スカートと冶金炉炉口との間の隙間からの外
気侵入は免れられず、N2の混入は避けられない
のが現状である。従つて、N2が混入しているCO
ガスは化学原料として充分とはいえず、現在の処
理技術では時代の趨勢に対応できないのが実情で
ある。 In other words, as a problem unique to metallurgical furnaces, slag accumulates at the mouth of the metallurgical furnace, making it impossible to make the skirt and the mouth of the metallurgical furnace come into close contact, and leakage of CO gas to the outside can lead to explosions and human body damage. Because there is a danger to
Since the cooler is operated to keep the pressure inside the cooler always lower than atmospheric pressure to prevent CO gas from leaking to the outside, outside air cannot be avoided from entering through the gap between the skirt and the metallurgical furnace mouth. At present, contamination with N 2 is unavoidable. Therefore, CO mixed with N2
The reality is that gas is not sufficient as a chemical raw material, and current processing technologies cannot keep up with the trends of the times.
本発明は、上記実情を鑑みなされたものであつ
て、純度の高いガスを回収する方法と、その装置
を提供せんとするものである。
The present invention has been made in view of the above-mentioned circumstances, and aims to provide a method and apparatus for recovering highly pure gas.
即ち本発明は、従来のように冶金炉から出る排
ガスの全量をスカートを介して冷却器に導くので
はなく、スカートから外気を吸引する前に直接冶
金炉から出るガスを別に設けたガス回収系に吸引
して純度の高いガスを回収するとともに、残余の
排ガスをスカートを介して冷却器に導いて処理す
るようにしたものであつて、冶金炉から出る排ガ
スを直接吸引する吸引管を設けて吸引し、この吸
引力を調節することによつて冶金炉内の圧力を大
気圧力に等しいか、あるいは、少し高い目に調節
して外気の侵入を防止し、別に設けた高濃度ガス
回収系に純度の高い排ガスを回収し、一方におい
て、冶金炉から出た排ガスが外部に漏洩しないよ
うに排ガス処理装置内の圧力を大気圧力より低く
して、残余の排ガスを吸引処理して爆発、およ
び、人体への危険もなく、安全に高濃度の排ガス
を回収することを特徴とするガス回収方法であ
る。
That is, the present invention does not introduce the entire amount of exhaust gas from the metallurgical furnace to the cooler through the skirt as in the conventional case, but instead uses a separate gas recovery system to collect the gas directly from the metallurgical furnace before drawing outside air from the skirt. The system collects high-purity gas by suctioning the metallurgical furnace, and the remaining exhaust gas is guided through a skirt to a cooler for treatment.A suction pipe is installed to directly suck the exhaust gas coming out of the metallurgical furnace. By adjusting this suction force, the pressure inside the metallurgical furnace is adjusted to be equal to or slightly higher than atmospheric pressure to prevent outside air from entering. Highly purified exhaust gas is recovered, while the pressure inside the exhaust gas treatment equipment is lowered below atmospheric pressure to prevent the exhaust gas from leaking outside, and the remaining exhaust gas is suctioned and exploded. This gas recovery method is characterized by safely recovering high-concentration exhaust gas without any danger to the human body.
この方法を実施するための装置として、冶金炉
から出る排ガスを処理するための排ガス処理装置
とは別に、冷却器、除塵器、誘引送風機およびガ
スホルダーから成る排ガス回収系を設け、一方冶
金炉内の排ガスを吸引するための吸引管を設け、
この吸引管と排ガス回収系とを接続装置で接続
し、この接続装置は切離し可能にして冶金炉の転
動を可能ならしめるとともに、接続状態にあると
きは気密性を有し、冶金炉内のガスを直接吸引回
収するとともに、残余の排ガスを排ガス処理装置
内に導いて外部に排ガスを漏出させることなく安
全に高濃度の排ガスを回収するようにしたことを
特徴とする。 As a device for implementing this method, an exhaust gas recovery system consisting of a cooler, a dust remover, an induced blower, and a gas holder is installed separately from the exhaust gas treatment device for treating the exhaust gas emitted from the metallurgical furnace. A suction pipe is installed to suck in the exhaust gas,
This suction pipe and the exhaust gas recovery system are connected by a connecting device, and this connecting device can be disconnected to enable rolling of the metallurgical furnace, and is airtight when in the connected state, so that the metallurgical furnace can be rotated. The present invention is characterized in that the gas is directly suctioned and recovered, and the remaining exhaust gas is guided into the exhaust gas treatment device to safely recover high-concentration exhaust gas without leaking the exhaust gas to the outside.
以下図に示した本実施例についてその詳細を説
明する。
The details of this embodiment shown in the figures will be explained below.
第２図及び第３図において、冶金炉１の炉口上
方にフード２６が設けられ、このフード２６に連
続して冷却器２４が接続され、冶金炉１で発生し
た排ガスはフード２６を介して冷却器２４内に導
かれるようになつている。 2 and 3, a hood 26 is provided above the furnace mouth of the metallurgical furnace 1, a cooler 24 is connected continuously to the hood 26, and the exhaust gas generated in the metallurgical furnace 1 is passed through the hood 26. It is adapted to be guided into a cooler 24.
１０は吸引管であつて、本実施例の吸引管は、
フード２６を貫通させ、冶金炉１の炉口に臨ませ
た位置に開口させ、上端を下向きに屈折させたＵ
字状に形成されており、２本のシリンダなどの昇
降装置２６によつて昇降可能なように懸吊されて
いる。１７はガス回収系導管であつて、その端部
には前記吸引管１０の上端屈折部と接続する水槽
構造からなる接続装置３０が設けられ、冷却器２
７、集塵器１８、誘引送風機１９、および、ガス
ホルダー２１によつて高濃度のガス回収系を構成
している。また４は、吸引管１０を垂直に貫通し
て設けた酸素吹込みランス、２０は冶金炉１内の
圧力を制御するためのダンパである。 10 is a suction tube, and the suction tube of this example is:
A U that penetrates the hood 26, opens at a position facing the furnace mouth of the metallurgical furnace 1, and has an upper end bent downward.
It is formed in a letter shape and is suspended so that it can be raised and lowered by a lifting device 26 such as two cylinders. Reference numeral 17 denotes a gas recovery system conduit, and a connecting device 30 having a water tank structure is provided at the end thereof to connect to the bent portion at the upper end of the suction tube 10.
7, a dust collector 18, an induced blower 19, and a gas holder 21 constitute a high concentration gas recovery system. Further, 4 is an oxygen blowing lance provided vertically penetrating the suction pipe 10, and 20 is a damper for controlling the pressure inside the metallurgical furnace 1.
第４図〜第６図は、吸引管１０の他の実施例で
ある。図において１０は吸引管であつて、シール
ボツクス１１内を上下動可能に設けられている。
この吸引管１０にはシールプレート１４が取付け
られていて、シールボツクス１１の上下に設けら
れた水槽１２，１３内にシールプレート１４を侵
すことにより（第５図）シールボツクスの上下は
シールされ、冶金炉１内とシールボツクス１１内
は吸引管１０によつてのみ連通するようになつて
いる。１５は掃気系管、１６は掃気用弁、１７は
除塵器１８とガス回収用誘引送風機１９とダンパ
２０とを備えたガス回収系導管であつて、これら
はいずれもシールボツクス１１の上下に設けたシ
ール部である水槽１２，１３間に接続されてい
る。また、第６図は別の実施例であつて、第４
図、または、第５図の実施例と違うところは酸素
吹込みランス４と吸引管１０とを一体にしたとこ
ろが相違し、他の部分は同じである。 4 to 6 show other embodiments of the suction tube 10. In the figure, reference numeral 10 denotes a suction tube, which is provided so as to be movable up and down within the seal box 11.
A seal plate 14 is attached to this suction tube 10, and by inserting the seal plate 14 into water tanks 12 and 13 provided above and below the seal box 11 (Fig. 5), the top and bottom of the seal box are sealed. The inside of the metallurgical furnace 1 and the inside of the seal box 11 are communicated only through a suction pipe 10. 15 is a scavenging system pipe, 16 is a scavenging valve, and 17 is a gas recovery system conduit equipped with a dust remover 18, an induced blower 19 for gas recovery, and a damper 20, all of which are installed above and below the seal box 11. It is connected between water tanks 12 and 13, which are sealed parts. Further, FIG. 6 shows another embodiment, and the fourth
The difference from the embodiment shown in the figure or FIG. 5 is that the oxygen blowing lance 4 and the suction pipe 10 are integrated, and the other parts are the same.
上記第２図〜第６図に示した実施例は、いずれ
も吸引管１０を冶金炉１の炉口部に挿入するよう
にしているが、これに限定されるものではなく、
冶金炉１の壁面を貫通させ吸引管１０に相当する
ものをこの貫通孔に挿入してもよい。 In the embodiments shown in FIGS. 2 to 6 above, the suction pipe 10 is inserted into the furnace mouth of the metallurgical furnace 1, but the invention is not limited to this.
It is also possible to penetrate the wall surface of the metallurgical furnace 1 and insert something corresponding to the suction pipe 10 into this through hole.
以上のように構成した本実施例の作用を以下説
明する。
The operation of this embodiment configured as above will be explained below.
先ず、第２図、および、第４図の状態は、吸引
管１０を昇降装置２３によつて上方に引き上げ、
受銑または出銑時冶金炉１の転動を可能にしてい
る。次に、冶金炉１の受銑が完了し、昇降装置２
３によつて吸引管１０を下降し、吸引管１０の下
端を冶金炉１内に挿入すると同時に、接続装置３
０、または、シール部である水槽１２，１３によ
つて完全シールし、冶金炉１内と高濃度ガス回収
系とを連通させる（第３図、第５図及び第６図の
状態）。この状態ではダンパ２０は閉の状態にな
つている。 First, in the states shown in FIGS. 2 and 4, the suction tube 10 is pulled upward by the lifting device 23,
This allows the metallurgical furnace 1 to rotate during receiving or tapping. Next, the metallurgical furnace 1 receives pig iron, and the lifting device 2
3 to lower the suction pipe 10 and insert the lower end of the suction pipe 10 into the metallurgical furnace 1, and at the same time connect the connecting device 3.
0, or completely sealed by water tanks 12 and 13, which are sealing parts, to communicate the inside of the metallurgical furnace 1 and the high concentration gas recovery system (states shown in FIGS. 3, 5, and 6). In this state, the damper 20 is in a closed state.
次に、酸素吹込みランス４から酸素を吹き込
み、吹錬が開始されると、ダンパ２０を開の方向
に作動させ、冶金炉１内の圧力を大気圧に等しい
か、あるいは、大気圧よりも高い圧力に保持する
ようにダンパ２０の開度を制御しながら、冶金炉
１内の高濃度のCOガスを高濃度ガス回収系に回
収する。これと同時に、吸引送風機６（第１図）
によつて、冷却器３、あるいは、ボイラ内が大気
圧よりも低い圧力、または、大気に等しい圧力に
制御されていて、スカート２、あるいは、フード
２６と冶金炉１炉口との間の間隙から大気を吸引
し、残余の排ガスはボイラで燃焼され、あるい
は、冷却器３（第１図）によつて冷却され処理さ
れる。 Next, oxygen is blown in from the oxygen blowing lance 4, and when blowing is started, the damper 20 is operated in the opening direction to make the pressure in the metallurgical furnace 1 equal to or lower than atmospheric pressure. The high concentration CO gas in the metallurgical furnace 1 is recovered to the high concentration gas recovery system while controlling the opening degree of the damper 20 to maintain a high pressure. At the same time, the suction blower 6 (Fig. 1)
The inside of the cooler 3 or the boiler is controlled to a pressure lower than atmospheric pressure or equal to atmospheric pressure, and the gap between the skirt 2 or hood 26 and the mouth of the metallurgical furnace 1 The remaining exhaust gas is burned in a boiler or cooled and treated in a cooler 3 (FIG. 1).
次に、吹錬が終了したとき、ダンパ２０を閉の
状態にし、吸引管１０を昇降装置２３によつて引
き上げて元の状態にし、次の吹錬工程に備える。 Next, when the blowing is finished, the damper 20 is closed, and the suction pipe 10 is pulled up by the lifting device 23 to return to its original state, in preparation for the next blowing process.
以上詳述した通り本発明によれば、次のような
効果が得られる。
As detailed above, according to the present invention, the following effects can be obtained.
(a) 冶金炉排ガス処理装置とは別に、高濃度の排
ガス回収系を設け、冶金炉内まで挿入される昇
降可能に吸引管によつて接続装置乃至はシール
装置を介して高濃度の排ガス回収系と排ガス処
理装置とを接続し、冶金炉内の排ガスを直接回
収するようにしたので、高濃度のCOガスの回
収が可能となる。(a) Separately from the metallurgical furnace exhaust gas treatment equipment, a high-concentration exhaust gas recovery system is installed, and the high-concentration exhaust gas is recovered through a connection device or sealing device with a suction pipe that can be raised and lowered and inserted into the metallurgical furnace. The system was connected to an exhaust gas treatment device to directly recover the exhaust gas inside the metallurgical furnace, making it possible to recover high-concentration CO gas.
(b) また、冶金炉内に吸引管が挿入されているの
で、吸引管から吸引されるガス量を調節するこ
とによつて冶金炉内の圧力の調節が可能とな
り、排ガス処理装置との関連において、冶金炉
内の圧力を大気圧よりも高くするとともに、排
ガス処理装置内の圧力を大気圧か、または、そ
れよりも低い圧力に制御することができ、冶金
炉内への外気の侵入を防止して排ガス純度を保
持するとともに、スカート、あるいは、フード
と炉口との間の間隙からの排ガスの漏出を防止
し、人体への危険及び爆発の危険をなくして高
濃度のCOガスを安全に回収することができ
る。(b) In addition, since a suction pipe is inserted into the metallurgical furnace, the pressure inside the metallurgical furnace can be adjusted by adjusting the amount of gas sucked from the suction pipe. In this method, the pressure in the metallurgical furnace can be made higher than atmospheric pressure, and the pressure in the exhaust gas treatment equipment can be controlled to atmospheric pressure or lower, thereby preventing outside air from entering the metallurgical furnace. This prevents the leakage of exhaust gas from the skirt or the gap between the hood and the furnace mouth, eliminating danger to the human body and the risk of explosion, making it possible to safely handle high-concentration CO gas. can be recovered.
第１図は従来の排ガス処理装置の全体を示す
図、第２図〜第６図は本願実施例であり、第２図
及び第３図は逆Ｕ字状の吸引管を用いて高濃度ガ
ス回収系と排ガス処理装置とを連結するようにし
たものであり、第２図は吸引管を引き上げた状態
を、また第３図は吸引管を下降させた状態をそれ
ぞれ示す。第４図乃至第６図はシールボツクスを
用いた他の実施例であり、第４図及び第５図は吸
引管と酸素吹込みランスを別にしたもの、第６図
はこの両者を一体にしたものを示す。尚第４図は
吸引管を引き上げた状態をまた第５図と第６図は
吸引管を下降させた状態をそれぞれ示す。
１０……吸引管、１２，１３……シール部水
槽、１７……ガス回収系導管、１８……集塵器、
１９……誘引送風機、２０……ダンパ、２１……
ガスホルダー、３０……接続装置。
Figure 1 is a diagram showing the entire conventional exhaust gas treatment device, Figures 2 to 6 are examples of the present application, and Figures 2 and 3 show high concentration gas using an inverted U-shaped suction pipe. The recovery system and the exhaust gas treatment device are connected, and FIG. 2 shows the state in which the suction pipe is pulled up, and FIG. 3 shows the state in which the suction pipe is lowered. Figures 4 to 6 show other embodiments using a seal box. Figures 4 and 5 show the suction pipe and oxygen blowing lance separated, and Figure 6 shows the two integrated. show something Note that FIG. 4 shows the state in which the suction tube is pulled up, and FIGS. 5 and 6 show the state in which the suction tube is lowered. 10... Suction pipe, 12, 13... Seal water tank, 17... Gas recovery system conduit, 18... Dust collector,
19... induced blower, 20... damper, 21...
Gas holder, 30... Connection device.
Claims (1)
冷却して排ガスの保有熱を回収し、未燃焼のま
まで回収するか、あるいは、冷却器内で燃焼さ
せて処理する冶金炉排ガス処理方法において、 (b) 冶金炉から発生するガスを冷却器に流入する
前に、冶金炉内に挿入した昇降可能な吸引管に
より冶金炉から発生する排ガスを、吹錬開始か
ら終了まで直接吸引するとともに、冶金炉内の
圧力を外気圧と同圧力か、または、外気圧より
高い圧力になるように制御し、 (c) 前記吸引管に吸引されなかつた残余の排ガス
を、別途冷却器内に導いて排ガスを冷却処理す
るようにしたことを特徴とする冶金炉排ガスを
高濃度で回収する方法。 ２ (a) 冶金炉から発生する排ガスを、冷却器で
冷却して排ガスの保有熱を回収し、未燃焼のま
まで回収するか、あるいは、冷却器内で燃焼さ
せて処理する冶金炉排ガス処理装置において、 (b) 前記冶金炉排ガス処理装置とは別に、高濃度
排ガス回収系を設け、 (c) 一方、前記冶金炉内に開口部を挿入させ、冶
金炉内の排ガスを吹錬開始から終了まで、直接
吸引する吸引管を昇降可能に設け、 (d) 該吸引管の下降時に、これと前記排ガス回収
系とを水密的に保持する接続装置を設け、 (e) 冶金炉から発生するガスを、ガス回収系に直
接回収するとともに、残余の排ガスを別途冷却
器内に導いて排ガスを冷却処理するようにした
ことを特徴とする冶金炉排ガスを高濃度で回収
する排ガス処理装置。[Scope of Claims] 1 (a) Exhaust gas generated from a metallurgical furnace is cooled with a cooler to recover the heat retained in the exhaust gas and is recovered unburned, or alternatively, the exhaust gas is combusted in the cooler. In the metallurgical furnace exhaust gas treatment method, (b) Before the gas generated from the metallurgical furnace flows into the cooler, the exhaust gas generated from the metallurgical furnace is collected by a suction pipe that can be raised and lowered and is inserted into the metallurgical furnace to start blowing. In addition to direct suction from the beginning to the end, the pressure inside the metallurgical furnace is controlled to be equal to or higher than the outside pressure; A method for recovering metallurgical furnace exhaust gas at a high concentration, characterized in that the exhaust gas is guided into a separate cooler and subjected to cooling treatment. 2 (a) Metallurgical furnace exhaust gas treatment in which the exhaust gas generated from the metallurgical furnace is cooled with a cooler, the heat retained in the exhaust gas is recovered, and the heat is recovered unburned, or the exhaust gas is treated by being combusted in the cooler. In the apparatus, (b) a high concentration exhaust gas recovery system is provided separately from the metallurgical furnace exhaust gas treatment device, and (c) an opening is inserted into the metallurgical furnace to collect the exhaust gas in the metallurgical furnace from the start of blowing. (d) A connecting device is provided to maintain watertight connection between the suction pipe and the exhaust gas recovery system when the suction pipe is lowered, and (e) the exhaust gas generated from the metallurgical furnace is An exhaust gas treatment device for recovering high concentration metallurgical furnace exhaust gas, characterized in that the gas is directly recovered into a gas recovery system, and the remaining exhaust gas is separately guided into a cooler to cool the exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57053555A JPS58168888A (en) | 1982-03-30 | 1982-03-30 | Method and device for recovering exhaust gas from metallurgical furnace in high concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57053555A JPS58168888A (en) | 1982-03-30 | 1982-03-30 | Method and device for recovering exhaust gas from metallurgical furnace in high concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58168888A JPS58168888A (en) | 1983-10-05 |
| JPS6221847B2 true JPS6221847B2 (en) | 1987-05-14 |
Family
ID=12946044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57053555A Granted JPS58168888A (en) | 1982-03-30 | 1982-03-30 | Method and device for recovering exhaust gas from metallurgical furnace in high concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58168888A (en) |
-
1982
- 1982-03-30 JP JP57053555A patent/JPS58168888A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58168888A (en) | 1983-10-05 |
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