JPH0414441Y2 - - Google Patents
Info
- Publication number
- JPH0414441Y2 JPH0414441Y2 JP1986019396U JP1939686U JPH0414441Y2 JP H0414441 Y2 JPH0414441 Y2 JP H0414441Y2 JP 1986019396 U JP1986019396 U JP 1986019396U JP 1939686 U JP1939686 U JP 1939686U JP H0414441 Y2 JPH0414441 Y2 JP H0414441Y2
- Authority
- JP
- Japan
- Prior art keywords
- scrap
- furnace
- melting
- furnace body
- 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
- 239000007789 gas Substances 0.000 claims description 30
- 238000002844 melting Methods 0.000 claims description 26
- 230000008018 melting Effects 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 239000000567 combustion gas Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 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
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は、複数基の炉体を備え、交互にスクラ
ツプの溶解及び予熱を繰返すスクラツプ溶解炉に
関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a scrap melting furnace that is equipped with a plurality of furnace bodies and alternately repeats melting and preheating of scrap.
「従来の技術」
従来、一対の炉体を備え、一方の炉体内でスク
ラツプの溶解を行なつている場合に、該炉体内で
発生する排ガスを連結ダクトで他方の炉体に導
き、該炉体内のスクラツプを上記排ガスにより加
熱する構成のスクラツプ溶解炉が知られている。
これは、溶解時に炉体内で発生する排ガスが有す
るエネルギーの有効利用を図るものである。``Prior Art'' Conventionally, when a pair of furnace bodies is provided and scrap is melted in one of the furnace bodies, the exhaust gas generated in the furnace body is guided to the other furnace body through a connecting duct. A scrap melting furnace is known that is configured to heat the scrap inside the body using the above-mentioned exhaust gas.
This is intended to effectively utilize the energy contained in the exhaust gas generated within the furnace during melting.
「考案が解決しようとする問題点」
しかしながら、上記のような構成のスクラツプ
溶解炉にあつては、予熱のために炉体内に導入さ
れるガスの流れが常に一方向のみであるため、予
熱温度が均一化せず、予熱効果が少ないという問
題がある。``Problem that the invention attempts to solve'' However, in the scrap melting furnace configured as described above, the flow of gas introduced into the furnace body for preheating is always in only one direction, so the preheating temperature There is a problem that the temperature is not uniform and the preheating effect is low.
本考案は、上記事情に鑑みてなされたもので、
その目的とするところは、予熱工程中の炉体内に
導入されるガスの流れを交互に逆方向に切換える
ことができ、スクラツプを均一に予熱できると共
に、省エネルギー化を図ることができるスクラツ
プ溶解炉を提供することにある。 This invention was made in view of the above circumstances,
The aim is to create a scrap melting furnace that can alternately switch the flow of gas introduced into the furnace body during the preheating process in opposite directions, thereby preheating the scrap uniformly and saving energy. It is about providing.
「問題点を解決するための手段」
上記目的を達成するために、本考案は、スクラ
ツプの予熱と溶解の二つの機能を有する複数基の
炉体と、スクラツプの溶解を行なう際に炉体内で
発生した可燃ガスを燃焼させる燃焼室とを備え、
上記炉体に、スクラツプの予熱時に燃焼室から導
入されるガスの入口及び出口を交互に切換えるた
めの切換手段を設けたものである。``Means for Solving the Problems'' In order to achieve the above object, the present invention has a plurality of furnace bodies that have the dual functions of preheating and melting scrap, and a Equipped with a combustion chamber that burns the generated combustible gas,
The furnace body is provided with a switching means for alternately switching the inlet and outlet of the gas introduced from the combustion chamber during preheating of scrap.
「作用」
本考案のスクラツプ溶解炉にあつては、溶解中
の炉体内で発生する可燃ガスを燃焼室で燃焼さ
せ、この燃焼ガスを他の予熱工程中の炉体内に導
入する際に、切換手段によつて、炉体のガス入口
とガス出口を適宜切換えて、炉体内に導入される
燃焼ガスの流れを切換える。``Function'' In the scrap melting furnace of the present invention, combustible gas generated in the furnace body during melting is burned in the combustion chamber, and when this combustion gas is introduced into the furnace body during another preheating process, switching is performed. The means appropriately switches the gas inlet and gas outlet of the furnace body to change the flow of combustion gas introduced into the furnace body.
「実施例」
以下、第１図ないし第３図に基づいて本考案の
一実施例を説明する。"Embodiment" Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3.
図中符号Ａ，Ｂは一対の溶解炉の炉体であり、
これらの炉体Ａ，Ｂの上部はそれぞれダクト１
ａ，２ａ及び１ｂ，２ｂを介して燃焼室Ｄに連結
されている。また、各炉体Ａ，Ｂの下部はそれぞ
れダクト３ａ，４ａ及び３ｂ，４ｂを介して燃焼
室Ｄに連結されている。さらに、上記ダクト１
ａ，２ａ間、ダクト１ｂ，２ｂ間、ダクト３ａ，
４ａ間及びダクト３ｂ，４ｂ間にはそれぞれ分岐
ダクト５ａ，５ｂ，６ａ，６ｂが連結されてい
る。そして、各分岐ダクト５ａ，５ｂ，６ａ，６
ｂの先端は合流して図示せぬ集塵装置及びブロワ
７に連結されている。また、上記各ダクト２ａ，
２ｂ，４ａ，４ｂ、５ａ，５ｂ，６ａ，６ｂには
それぞれダンパー８ａ，８ｂ，９ａ，９ｂ，１０
ａ，１０ｂ，１１ａ，１１ｂが設けられており、
かつ上記燃焼室Ｄと集塵装置との間には、ダンパ
１２を有するダクト１３が連結されている。な
お、上記各炉体Ａ，Ｂは電極１４を挿入すること
によつてアーク溶解を、かつ底部より炭材Ｃ及び
酸素O2を吹込むことによつて炭材溶解をそれぞ
れ行なえる構造になつている。 Symbols A and B in the figure are the furnace bodies of a pair of melting furnaces,
The upper parts of these furnace bodies A and B are each duct 1.
It is connected to the combustion chamber D via a, 2a and 1b, 2b. Further, the lower part of each furnace body A, B is connected to a combustion chamber D via ducts 3a, 4a and 3b, 4b, respectively. Furthermore, the duct 1
between a and 2a, between ducts 1b and 2b, duct 3a,
Branch ducts 5a, 5b, 6a, and 6b are connected between 4a and between ducts 3b and 4b, respectively. And each branch duct 5a, 5b, 6a, 6
The tips of b join together and are connected to a dust collector and blower 7 (not shown). In addition, each of the above ducts 2a,
2b, 4a, 4b, 5a, 5b, 6a, 6b have dampers 8a, 8b, 9a, 9b, 10, respectively.
a, 10b, 11a, 11b are provided,
A duct 13 having a damper 12 is connected between the combustion chamber D and the dust collector. The above-mentioned furnace bodies A and B have a structure in which arc melting can be performed by inserting the electrode 14, and carbon material melting can be performed by blowing carbon material C and oxygen O 2 from the bottom. ing.
上記のように構成されたスクラツプ溶解炉にお
いてスクラツプを溶解する場合について説明す
る。 The case where scrap is melted in the scrap melting furnace configured as described above will be explained.
今、一対の炉体Ａ，Ｂのうち炉体Ａを溶解炉、
炉体Ｂを予熱炉として操業する場合には、まず、
炉体Ａに挿入された電極１４に通電することによ
り、炉体Ａ内のスクラツプをアーク溶解する。そ
して、通電後所定量の溶湯が炉体Ａの底部に形成
されると、アークによる通電を停止し、電極１４
を取り除いて炉体Ａを密閉し、炭材による吹込み
溶解を開始する。すなわち、炉体Ａの底部より炭
材と酸素を溶湯中に吹込むことにより、発生する
一酸化炭素（Co）ガスの反応熱によつてスクラ
ツプを溶解する。 Now, of the pair of furnace bodies A and B, furnace body A is the melting furnace.
When operating furnace body B as a preheating furnace, first,
By energizing the electrode 14 inserted into the furnace body A, the scrap inside the furnace body A is arc melted. Then, when a predetermined amount of molten metal is formed at the bottom of the furnace body A after energization, the energization by the arc is stopped and the electrode 14
is removed, the furnace body A is sealed, and blowing melting with carbonaceous material is started. That is, by injecting carbonaceous material and oxygen into the molten metal from the bottom of the furnace body A, the scrap is melted by the reaction heat of the generated carbon monoxide (Co) gas.
この場合、第１図に示すように、ダンパー８
ａ，９ｂ，１０ｂを開とし、ダンパー８ｂ，９
ａ，１０ａ，１１ａ，１１ｂ，１２を閉とするこ
とにより、溶解中の炉体Ａで発生した可燃ガスは
燃焼室Ｄに導入され、この燃焼室Ｄで完全燃焼さ
せられた後、ダンパー９ｂを経由して炉体Ｂの下
部から内部に導入される。そして、炉体Ｂ内のス
クラツプを加熱した排ガスはダンパー１０ｂを経
由して集塵装置（図示せず）に送られる。 In this case, as shown in FIG.
a, 9b, 10b open, dampers 8b, 9
By closing a, 10a, 11a, 11b, and 12, the combustible gas generated in the furnace body A during melting is introduced into the combustion chamber D, and after being completely combusted in the combustion chamber D, the damper 9b is closed. It is introduced into the interior of the furnace body B from the lower part thereof. Then, the exhaust gas that heated the scrap in the furnace body B is sent to a dust collector (not shown) via the damper 10b.
次いで、所定時間経過後、第２図に示すよう
に、ダンパー８ｂ，１１ｂを開とし、ダンパー９
ｂ，１０ｂを閉とすることにより、上記燃焼室Ｄ
を出たガスは、ダンパー８ｂを経由して炉体Ｂの
上部から導入される。そして、炉体Ｂ内のスクラ
ツプを加熱した排ガスはダンパー１１ｂを介して
上記集塵装置に送られる。従つて、炉体Ｂ内を流
れる排ガスの流れは、上記第１図の場合と逆にな
り、これを交互に繰返してスクラツプの均一予熱
を行なう。 Next, after a predetermined period of time has passed, as shown in FIG. 2, the dampers 8b and 11b are opened and the damper 9 is opened.
By closing b and 10b, the combustion chamber D
The gas that has exited is introduced from the upper part of the furnace body B via the damper 8b. The exhaust gas that heated the scrap in the furnace body B is sent to the dust collector via the damper 11b. Therefore, the flow of exhaust gas inside the furnace body B is reversed to that shown in FIG. 1, and this is alternately repeated to uniformly preheat the scrap.
また、炉体Ｂが炉修、装入等でガスを流せない
場合には、第３図に示すように、ダンパー１２を
開としダンパー８ｂ，９ｂ，１０ｂ，１１ｂを閉
とすることにより、燃焼室を出た排ガスは炉体Ｂ
内を通らずに、ダンパー１２を経由して上記集塵
装置に送られるから、炉体Ａは溶解を続けること
ができる。 In addition, if the furnace body B cannot allow gas to flow due to furnace repair, charging, etc., as shown in FIG. 3, the combustion The exhaust gas leaving the chamber is sent to furnace body B.
Since the dust is sent to the dust collector via the damper 12 without passing through the interior, the furnace body A can continue melting.
さらに、炉体Ａでスクラツプの予熱、炉体Ｂで
スクラツプの溶解を行なう時は、ダンパー８ａ，
８ｂ，９ａ，９ｂ，１０ａ，１０ｂ，１１ａ，１
１ｂの操作を上述した場合と入れかえて同様に行
なうことができる。 Furthermore, when preheating the scrap in the furnace body A and melting the scrap in the furnace body B, the damper 8a,
8b, 9a, 9b, 10a, 10b, 11a, 1
The same operation can be performed by replacing the operation 1b with that described above.
なお、本考案は上記実施例に限定されるもので
はなく、例えば、ガスの入口及び出口を炉体Ａ，
Ｂの上下位置に設ける代わりに、水平面において
対向する位置に設けてもよく、その他本考案の要
旨に逸脱しない範囲内で種々の変更を加え得るこ
とは勿論である。 Note that the present invention is not limited to the above-mentioned embodiments; for example, the gas inlet and outlet may be connected to the furnace body A,
Instead of being provided at the upper and lower positions of B, they may be provided at opposing positions in the horizontal plane, and it goes without saying that various other changes may be made without departing from the gist of the present invention.
「考案の効果」
以上説明したように、本考案によれば、スクラ
ツプの予熱と溶解の二つの機能を有する複数基の
炉体と、スクラツプの溶解を行なう際に炉体内で
発生した可燃ガスを燃焼させる燃焼室とを備え、
上記炉体に、スクラツプの予熱時に燃焼室から導
入されるガスの入口及び出口を交互に切換えるた
めの切換手段を設けたものであるから、この切換
手段によつて予熱を行なつている炉体内のガスの
流れを交互に逆方向に切換えることにより、炉体
内のスクラツプの均一加熱が可能となり、排ガス
の有する熱エネルギーの有効利用が図れ、省エネ
ルギー化を図ることができるという優れた効果を
有する。``Effects of the invention'' As explained above, according to the invention, there are multiple furnace bodies that have the dual functions of preheating and melting scrap, and combustible gas generated in the furnace bodies when melting scrap. Equipped with a combustion chamber for combustion,
Since the above-mentioned furnace body is provided with a switching means for alternately switching the inlet and outlet of the gas introduced from the combustion chamber during the preheating of scrap, the switching means is used to switch between the inlet and the outlet of the gas introduced from the combustion chamber when preheating the scrap. By alternately switching the gas flow in opposite directions, it is possible to uniformly heat the scrap inside the furnace body, and the thermal energy of the exhaust gas can be used effectively, which has the excellent effect of saving energy.
第１図ないし第３図は本考案の一実施例を示す
もので、第１図は炉体Ｂの下部からガスを導入す
る場合の説明図、第２図は炉体Ｂの上部からガス
を導入する場合の説明図、第３図は炉体Ｂ内にガ
スを導入しない場合の説明図である。
Ａ，Ｂ……溶解炉の炉体、Ｄ……燃焼室、８
ａ，８ｂ，９ａ，９ｂ，１０ａ，１０ｂ，１１
ａ，１１ｂ，１２……ダンパー。
Figures 1 to 3 show an embodiment of the present invention. Figure 1 is an explanatory diagram when gas is introduced from the lower part of furnace body B, and Figure 2 is an explanatory diagram when gas is introduced from the upper part of furnace body B. FIG. 3 is an explanatory diagram for the case where gas is not introduced into the furnace body B. A, B... Furnace body of the melting furnace, D... Combustion chamber, 8
a, 8b, 9a, 9b, 10a, 10b, 11
a, 11b, 12... damper.
Claims (1)
複数基の炉体と、一方の炉体でスクラツプの溶解
を行なう際に発生した可燃ガスを燃焼させる燃焼
室とを備え、該燃焼室で生成された燃焼ガスを他
方の炉体内に導入してスクラツプの予熱を行な
い、交互に予熱及び溶解を繰返して操業を行なう
スクラツプ溶解炉において、上記炉体に、スクラ
ツプの予熱時にガス入口及びガス出口を交互に切
換えるための切換手段を設けたことを特徴とする
スクラツプ溶解炉。 It is equipped with multiple furnace bodies that have the dual functions of preheating and melting scrap, and a combustion chamber that burns the combustible gas generated when melting scrap in one of the furnace bodies. In a scrap melting furnace that preheats the scrap by introducing combustion gas into the other furnace body, and operates by repeating preheating and melting alternately, a gas inlet and a gas outlet are alternately connected to the furnace body to preheat the scrap. A scrap melting furnace characterized by being provided with a switching means for switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986019396U JPH0414441Y2 (en) | 1986-02-13 | 1986-02-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986019396U JPH0414441Y2 (en) | 1986-02-13 | 1986-02-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62132153U JPS62132153U (en) | 1987-08-20 |
| JPH0414441Y2 true JPH0414441Y2 (en) | 1992-03-31 |
Family
ID=30813956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986019396U Expired JPH0414441Y2 (en) | 1986-02-13 | 1986-02-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0414441Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0746033B2 (en) * | 1986-02-27 | 1995-05-17 | 石川島播磨重工業株式会社 | Scrap preheating method and apparatus for electric furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155579A (en) * | 1984-08-25 | 1986-03-20 | 合同製鉄株式会社 | Method of preheating scrap by exhaust gas from electric steel-making furnace |
-
1986
- 1986-02-13 JP JP1986019396U patent/JPH0414441Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155579A (en) * | 1984-08-25 | 1986-03-20 | 合同製鉄株式会社 | Method of preheating scrap by exhaust gas from electric steel-making furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62132153U (en) | 1987-08-20 |
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