JPS6360116B2 - - Google Patents
Info
- Publication number
- JPS6360116B2 JPS6360116B2 JP59245646A JP24564684A JPS6360116B2 JP S6360116 B2 JPS6360116 B2 JP S6360116B2 JP 59245646 A JP59245646 A JP 59245646A JP 24564684 A JP24564684 A JP 24564684A JP S6360116 B2 JPS6360116 B2 JP S6360116B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- waste gas
- heat exchanger
- washing tower
- passage
- 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
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
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Electrolytic Production Of Metals (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、銅製錬用反射炉から排出される廃熱
を利用して銅電解液を加熱するようにした廃熱の
利用システムに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a waste heat utilization system that heats a copper electrolyte using waste heat discharged from a reverberatory furnace for copper smelting. be.
周知のように、銅製錬用の反射炉においては、
多量の熱を有する廃ガスが排出される。従来、こ
のような廃ガスが保有する熱エネルギーを利用す
るシステムとしては、第２図に示すものがある。
この廃熱利用システムは、反射炉１の出口に余熱
ボイラー３を設置し、この余熱ボイラー３によつ
て熱エネルギーを回収して発電を行うようにした
ものである。なお、余熱ボイラー３を通過した廃
ガスは、冷洗塔４によつて冷却された後、煙道２
の末端に設置された石膏プラント５においてSO2
ガスが回収されて外部に排出される。また、図中
符号６はコツトレルである。
As is well known, in the reverberatory furnace for copper smelting,
Waste gas with a large amount of heat is discharged. Conventionally, there is a system shown in FIG. 2 that utilizes the thermal energy contained in such waste gas.
In this waste heat utilization system, a residual heat boiler 3 is installed at the outlet of the reverberatory furnace 1, and thermal energy is recovered by the residual heat boiler 3 to generate electricity. Note that the waste gas that has passed through the residual heat boiler 3 is cooled by the cold washing tower 4, and then passes through the flue 2.
SO 2 at the gypsum plant 5 installed at the end of
Gas is collected and discharged to the outside. Further, the reference numeral 6 in the figure is a cottle.
しかしながら、上記の廃熱利用システムにおい
ては、余熱ボイラー３を通過した廃ガスが末だ約
300℃程度の熱を保有しており、したがつて近時
の省エネルギーの観点からみれば十分なエネルギ
ーの回収が果されていないという問題があつた。
However, in the above waste heat utilization system, the waste gas that has passed through the residual heat boiler 3 is
It retains heat of about 300 degrees Celsius, so from the perspective of recent energy conservation, there has been a problem that sufficient energy recovery has not been achieved.
本発明は、上記問題を解決するためになされた
もので、廃熱の利用率を大幅に向上させることが
できる銅製錬用反射炉から排出される廃熱の利用
システムを提供することを目的とする。
The present invention was made in order to solve the above problems, and an object of the present invention is to provide a system for utilizing waste heat discharged from a reverberatory furnace for copper smelting, which can significantly improve the utilization rate of waste heat. do.
本発明は、上記の目的を達成するために、銅製
錬用反射炉から排出される廃ガスの通路中に冷洗
塔を設置し、この冷洗塔に直接連結してその上流
側の通路に熱交換器を設置し、かつこの熱交換器
と銅電解槽との間で銅電解槽の電解液を循環させ
るようにしたものである。
In order to achieve the above object, the present invention installs a cooling washing tower in the passage of waste gas discharged from a reverberatory furnace for copper smelting, connects directly to this cooling washing tower, and connects it to the upstream passage. A heat exchanger is installed, and the electrolyte in the copper electrolytic cell is circulated between the heat exchanger and the copper electrolytic cell.
すなわち、本出願の発明者は、銅製錬用反射炉
から排出される廃熱によつて、製錬炉に近接して
配置される銅電解槽の電解液を加熱することを思
いついたのである。一般に、銅電解槽の電解液
は、精錬時60℃程度になされており、常温より高
くなつている。したがつて、精錬時に電解液を加
熱する必要がある。特に、冬期には放熱が激し
く、しかも電解槽は、通常、非常に大型であるた
め、電解液の加熱には多量の熱エネルギーを費さ
なければならなかつた。 That is, the inventor of the present application came up with the idea of heating an electrolyte in a copper electrolytic cell disposed close to a smelting furnace using waste heat discharged from a reverberatory furnace for copper smelting. Generally, the electrolyte in a copper electrolytic tank is heated to about 60°C during refining, which is higher than room temperature. Therefore, it is necessary to heat the electrolyte during refining. Particularly in the winter, heat radiation is intense, and because electrolytic cells are usually very large, a large amount of thermal energy must be used to heat the electrolyte.
そこで上記の構成を採用することにより、廃ガ
ス中の廃熱によつて電解液を加熱するようにした
ものである。この結果、電解液を加熱するための
熱エネルギーとしては、廃熱以外全く不用とな
り、省エネルギーに大きく貢献することができた
のである。 Therefore, by adopting the above configuration, the electrolytic solution is heated by the waste heat in the waste gas. As a result, no thermal energy other than waste heat was needed to heat the electrolyte, making a significant contribution to energy conservation.
以下、本発明の一実施例について第１図を参照
して説明する。なお、第１図において上記従来例
と同様な部分には、同一符号を付してその説明を
省略する。
Hereinafter, one embodiment of the present invention will be described with reference to FIG. In FIG. 1, the same parts as those in the conventional example described above are given the same reference numerals, and the explanation thereof will be omitted.
第１図に示す実施例においては、冷洗塔４に隣
接してその上流側の煙道２の熱交換器７が設置さ
れている。この熱交換器７内には、熱交換パイプ
（図示せず）が配設されており、熱交換パイプの
入口と出口とはそれぞれ配管８，９を介して電解
槽１０に接続されている。そして、配管８を介し
て熱交換器７に送られてきた電解液は、熱交換パ
イプを通過する際に熱交換パイプ間を通る廃ガス
によつて加熱され、加熱された電解液は配管９を
介して電解槽１０に戻るようになつている。 In the embodiment shown in FIG. 1, the heat exchanger 7 of the flue 2 is installed adjacent to the cold washing tower 4 on the upstream side thereof. A heat exchange pipe (not shown) is disposed within the heat exchanger 7, and the inlet and outlet of the heat exchange pipe are connected to the electrolytic cell 10 via pipes 8 and 9, respectively. The electrolytic solution sent to the heat exchanger 7 via the piping 8 is heated by the waste gas that passes between the heat exchange pipes when passing through the heat exchange pipes, and the heated electrolytic solution is transferred to the heat exchanger 7 through the piping 8. It is designed to return to the electrolytic cell 10 via.
しかして、本発明の廃熱の利用システムによれ
ば、電解槽１０の電解液を廃ガスの廃熱によつて
加熱するようにしているから、廃ガスから十分に
熱を回収することができる一方、電解液を加熱す
るための特別な熱エネルギーを必要とせず、エネ
ルギーを大幅に節約することができる。 According to the waste heat utilization system of the present invention, since the electrolytic solution in the electrolytic cell 10 is heated by the waste heat of the waste gas, sufficient heat can be recovered from the waste gas. On the other hand, no special thermal energy is required to heat the electrolyte, resulting in significant energy savings.
特にこの実施例のように、煙道２の末端に石膏
プラント５を設置しているため廃ガスを冷却する
ことが必要な場合には、廃ガスが冷洗塔４に至る
以前に熱交換器７において冷却されるから、冷洗
塔４において必要とする冷却水の量を大幅に少な
くすることができ、省エネルギー化をより一層達
成することができるとともに、冷洗塔４における
廃ガスの降温幅が小さくなるから、廃ガスの温度
コントロールが容易になる等の利点がある。 In particular, as in this embodiment, when it is necessary to cool the waste gas because the gypsum plant 5 is installed at the end of the flue 2, the heat exchanger is used before the waste gas reaches the cooling washing tower 4. 7, the amount of cooling water required in the cold-washing tower 4 can be significantly reduced, further achieving energy savings, and reducing the temperature drop range of the waste gas in the cold-washing tower 4. Since the temperature becomes smaller, there are advantages such as ease of controlling the temperature of the waste gas.
反射炉１から排出される150000Nm3／ｈの廃ガ
スは、余熱ボイラー３を通過した後、その温度が
260℃になつていた。この廃ガスにより、入口側
温度が56〜58℃の電解液を63〜65℃に加熱して電
解槽１０に戻したところ、電解槽１０中の電解液
を何ら加熱することなく60℃の一定温度に保つこ
とができた。ここで、電解槽１０の液量は2300
m3、電解液の循環量は670m3／ｈ、熱交換器７の
熱交換伝熱面積850m2とした。
After the 150000Nm 3 /h waste gas discharged from the reverberatory furnace 1 passes through the residual heat boiler 3, its temperature increases.
The temperature had reached 260℃. This waste gas heated the electrolytic solution whose inlet side temperature was 56 to 58°C to 63 to 65°C and returned it to the electrolytic cell 10. was able to maintain the temperature. Here, the liquid volume in the electrolytic cell 10 is 2300
m 3 , the circulation rate of the electrolytic solution was 670 m 3 /h, and the heat exchange heat transfer area of the heat exchanger 7 was 850 m 2 .
また、熱交換器７を通過した廃ガスの温度は、
180℃であり、この廃ガスは冷洗塔４で60℃に冷
却し、石膏プラント５へと送つた。 Furthermore, the temperature of the waste gas that has passed through the heat exchanger 7 is
The waste gas was cooled to 60°C in the cold washing tower 4 and sent to the gypsum plant 5.
なお、上記のように、廃ガスは熱交換器７内に
おいてSO2ガスが凝縮し始める露点以下の温度に
下がり、このためH2SO4（硫酸ミスト）が折出す
る。そこで、熱交換器７の内壁面および熱交換パ
イプの外周面を耐食性の高い材質によつて構成す
る必要がある。上記の実施例ではエコノマイザー
を用いた。 Note that, as described above, the temperature of the waste gas falls below the dew point at which SO 2 gas begins to condense in the heat exchanger 7, and therefore H 2 SO 4 (sulfuric acid mist) is precipitated. Therefore, the inner wall surface of the heat exchanger 7 and the outer peripheral surface of the heat exchange pipe must be made of a material with high corrosion resistance. In the above examples, an economizer was used.
また、上記の実施例においては、熱交換器７を
冷洗塔４に直接連結しているが、熱交換器７と冷
洗塔４とを離して設置してもよい。ただし、熱交
換器７と冷洗塔４とを離間させた場合には、熱交
換器７と冷洗塔４とを連結する煙道の内面が露点
以下に下がつた廃ガスによつて腐食されるのを防
止するために、煙道の内面を耐食構造とする必要
がある。この結果、設備費が高騰する。したがつ
て、上記の実施例のように熱交換器７を冷洗塔４
に直接連結したものである。 Further, in the above embodiment, the heat exchanger 7 is directly connected to the cold washing tower 4, but the heat exchanger 7 and the cold washing tower 4 may be installed separately. However, if the heat exchanger 7 and the cold washing tower 4 are separated, the inner surface of the flue connecting the heat exchanger 7 and the cold washing tower 4 will be corroded by the waste gas that has dropped below the dew point. In order to prevent this, the inner surface of the flue must have a corrosion-resistant structure. As a result, equipment costs rise. Therefore, as in the above embodiment, the heat exchanger 7 is replaced with the cold washing tower 4.
It is directly connected to.
以上説明したように、本発明の廃熱利用システ
ムによれば、銅製錬用反射炉の出口に余熱ボイラ
ーを設置し、この余熱ボイラーを通過した廃ガス
の通路中に冷洗塔を設置し、かつ上記通路の末端
に石膏プラントを設置すると共に、上記冷洗塔に
直接連結してその上流側の通路に熱交換器を設置
する一方、この熱交換器と銅電解槽との間で銅電
解槽の電解液を循環させるようにしているから、
銅製錬用反射炉から排出される廃熱を十分に回収
することができるとともに、銅電解槽の電解液を
加熱するための特別なエネルギーが不要になり、
省エネルギーという近時の要望に十分に応えるこ
とができるという効果が得られる。また、廃ガス
が冷洗塔に至る以前に熱交換器において冷却され
るから、冷洗塔において必要とする冷却水の量を
大幅に少なくすることができ、省エネルギー化を
より一層達成することができるとともに、冷洗塔
における廃ガスの降温幅が小さくなるから、廃ガ
スの温度コントロールを容易に行なうことができ
る。さらに、熱交換器を、冷洗塔に直接連結して
その上流側の通路に設置したものであるから、熱
交換器の上流側の通路において廃ガスが露点以下
の温度に下がるおそれがなく、従つて、該通路内
に硫酸ミスト等の腐食性ミストが析出することを
防止できて、通路を耐食性構造とする必要がな
い。
As explained above, according to the waste heat utilization system of the present invention, a residual heat boiler is installed at the outlet of the reverberatory furnace for copper smelting, a cooling washing tower is installed in the passage of the waste gas that has passed through the residual heat boiler, In addition, a gypsum plant is installed at the end of the passage, and a heat exchanger is installed in the passage upstream of the cooling tower, which is directly connected to the cooling tower. Because the electrolyte in the tank is circulated,
It is possible to sufficiently recover the waste heat emitted from the reverberatory furnace for copper smelting, and there is no need for special energy to heat the electrolyte in the copper electrolytic tank.
This has the effect of being able to fully meet the recent demand for energy conservation. In addition, since the waste gas is cooled in the heat exchanger before reaching the cold washing tower, the amount of cooling water required in the cold washing tower can be significantly reduced, resulting in even greater energy savings. At the same time, the range of temperature drop of the waste gas in the cold washing tower becomes smaller, so the temperature of the waste gas can be easily controlled. Furthermore, since the heat exchanger is directly connected to the cold washing tower and installed in the upstream passage, there is no risk that the temperature of the waste gas will drop below the dew point in the upstream passage of the heat exchanger. Therefore, it is possible to prevent corrosive mist such as sulfuric acid mist from being deposited in the passage, and there is no need for the passage to have a corrosion-resistant structure.
このように、本発明は、銅製錬用反射炉から排
出される廃ガスが有する熱エネルギーを有効に回
収することができ、省エネルギー化を図ることが
できると共に、廃ガス中のSO2ガスを石膏の形態
で確実に取り除くことができ、しかも銅製錬から
銅電解精製に至る一連の銅精製プロセスを効率良
く運用でき、全体として極めて合理的なシステム
を実現できるという優れた効果を奏する。 As described above, the present invention can effectively recover the thermal energy possessed by the waste gas discharged from the reverberatory furnace for copper smelting, and can achieve energy saving . It has the excellent effect of being able to reliably remove copper in the form of , and efficiently operating a series of copper refining processes from copper smelting to copper electrolytic refining, and realizing an extremely rational system as a whole.
第１図は本発明の一実施例を示す全体構成図、
第２図は従来の廃熱利用システムの一例を示す全
体構成図である。
１……銅製錬用反射炉、２……煙道（通路）、
３……余熱ボイラー、４……冷洗塔、５……石膏
プラント、７……熱交換器、１０……銅電解槽。
FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is an overall configuration diagram showing an example of a conventional waste heat utilization system. 1... Reverberatory furnace for copper smelting, 2... Flue (passage),
3... Residual heat boiler, 4... Cold washing tower, 5... Gypsum plant, 7... Heat exchanger, 10... Copper electrolyzer.
Claims (1)
し、この余熱ボイラーを通過した廃ガスの通路中
に冷洗塔を設置し、かつ上記通路の末端に石膏プ
ラントを設置すると共に、上記冷洗塔に直接連結
してその上流側の通路に熱交換器を設置する一
方、この熱交換器と銅電解槽との間で銅電解槽の
電解液を循環させることを特徴とする銅製錬用反
射炉から排出される廃熱の利用システム。1. A residual heat boiler is installed at the outlet of the reverberatory furnace for copper smelting, a cold washing tower is installed in the passage for the waste gas that has passed through the residual heat boiler, and a gypsum plant is installed at the end of the passage, and the cold washing tower is installed at the end of the passage. A reflector for copper smelting, characterized in that a heat exchanger is directly connected to the tower and installed in the passage on the upstream side, and the electrolyte of the copper electrolytic tank is circulated between the heat exchanger and the copper electrolytic tank. A system that utilizes waste heat discharged from a furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59245646A JPS61124593A (en) | 1984-11-20 | 1984-11-20 | Utilizing system of waste heat emitted from non-ferrous metal smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59245646A JPS61124593A (en) | 1984-11-20 | 1984-11-20 | Utilizing system of waste heat emitted from non-ferrous metal smelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124593A JPS61124593A (en) | 1986-06-12 |
| JPS6360116B2 true JPS6360116B2 (en) | 1988-11-22 |
Family
ID=17136741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59245646A Granted JPS61124593A (en) | 1984-11-20 | 1984-11-20 | Utilizing system of waste heat emitted from non-ferrous metal smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61124593A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4908836B2 (en) * | 2005-12-06 | 2012-04-04 | 株式会社信田屋 | Window frame for assembly house |
| CN108728638B (en) * | 2018-09-12 | 2024-07-23 | 江钨世泰科钨品有限公司 | A method and system for utilizing waste heat in tungsten smelting autoclave process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738480B2 (en) * | 1973-07-13 | 1982-08-16 | ||
| JPS5115484A (en) * | 1974-07-30 | 1976-02-06 | Showa Denko Kk | ONDOKEN SHUTSUSOCHI |
-
1984
- 1984-11-20 JP JP59245646A patent/JPS61124593A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61124593A (en) | 1986-06-12 |
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