JPS5964690A - Device to recover heat from gas generated in coke oven - Google Patents
Device to recover heat from gas generated in coke ovenInfo
- Publication number
- JPS5964690A JPS5964690A JP17402482A JP17402482A JPS5964690A JP S5964690 A JPS5964690 A JP S5964690A JP 17402482 A JP17402482 A JP 17402482A JP 17402482 A JP17402482 A JP 17402482A JP S5964690 A JPS5964690 A JP S5964690A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- coke oven
- pipe
- gas
- pipes
- 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
Links
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は石炭を乾留してコークスを製造する際に副生ず
るガスの保有する顕熱を有効に利用するだめの熱回収装
置に関するものである。コークス製造の際、副生ずるガ
スをコークス炉ガスと呼び、このガスは各炉上の上昇管
よりドライメーンと呼ばれる集合管に入る際安水を噴霧
されて６００°〜７００°ＣＯガス温度から一気に８０
〜９０°Ｃの温度に降下する。従ってこの時点でコーク
ス炉ガスはその保有する熱量が熱力学的に利用度の低い
熱量に変わる。上記の８００〜９０°Ｃのコークス炉ガ
スはドライメーンよりザクションメーンを経てガスクー
ラにより３０’０程度まで冷却され不純物を除去する工
程を通り工場内の燃料として利用される。最近、省エネ
ルギーの観点より上記上昇管内のコークス炉ガス顕熱の
回収方法に関しかなりの数の提案がなされている。例え
ば上昇管の内壁に伝熱管を配設し給水して蒸気または温
水を回収する方法や給水の代りに熱媒油を伝熱管に通し
加熱された熱媒油で他の炉の燃焼用空気等を予熱する方
法等が提案されている。しかし、これらの方法には次の
ような問題がある。すなわち前者の蒸気又は温水で回収
する方法は上昇管内壁に配設した伝熱管が破損し上昇管
内に噴出した場合水蒸気爆発の危険性がある。また伝熱
管内では蒸発が起るためボイラー装置となり年１回官庁
検査を受ける必要がありコークス炉の生産に支障をきた
す。また後者の熱媒油等を用いる場合も前者と大同小異
であり、伝熱管破損時のコークス炉本体、レンガの損傷
は避けがたい。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat recovery device that effectively utilizes the sensible heat possessed by gas that is produced as a by-product when coke is produced by carbonizing coal. During coke production, the gas that is produced as a by-product is called coke oven gas. When this gas enters the collecting pipe called the dry main from the riser pipe above each oven, it is sprayed with ammonium water and the CO gas temperature rises from 600° to 700°C. 80
The temperature drops to ~90°C. Therefore, at this point, the amount of heat retained by the coke oven gas changes to a amount of heat that is thermodynamically less available. The above-mentioned coke oven gas at 800 to 90°C passes through a dry main, a suction main, a gas cooler to about 30'0, and is used as a fuel in the factory through a process of removing impurities. Recently, from the viewpoint of energy conservation, a considerable number of proposals have been made regarding methods for recovering the sensible heat of the coke oven gas in the riser pipe. For example, heat transfer tubes are installed on the inner wall of the riser pipe and water is supplied to recover steam or hot water. Instead of water supply, heat transfer oil is passed through the heat transfer tubes and the heated heat transfer oil is used to generate combustion air for other furnaces. Several methods have been proposed for preheating. However, these methods have the following problems. In other words, in the former method of recovering steam or hot water, there is a risk of a steam explosion if the heat transfer tube installed on the inner wall of the riser breaks and spews out into the riser. In addition, since evaporation occurs within the heat transfer tubes, it becomes a boiler device and must be inspected once a year by a government agency, which hinders the production of coke ovens. Furthermore, when using the latter type of heat transfer oil, etc., it is almost the same as the former, and damage to the coke oven body and bricks when the heat exchanger tube breaks is unavoidable.
本発明の目的はこのような欠点のないコークス炉発生ガ
スの熱回収装置を提供することである。The object of the present invention is to provide a heat recovery device for coke oven gas that does not have these drawbacks.
本願発明者はこの目的のため鋭意研究の結果、コークス
炉ガス上昇管内にヒートパイプを束ねた管束を装入して
、管束の下部においてコークス炉ガスの顕熱を吸収し、
吸収した熱を管束の上部において管束外側の熱媒体また
はガス体に放出するごとくしたコークス炉発生ガスの熱
回収装置を達成した。As a result of intensive research for this purpose, the inventor of the present application inserted a tube bundle in which heat pipes were bundled into the coke oven gas riser pipe, and absorbed the sensible heat of the coke oven gas in the lower part of the tube bundle.
A heat recovery device for coke oven gas has been achieved in which the absorbed heat is released in the upper part of the tube bundle to a heat medium or gas body outside the tube bundle.
本発明の装置においては、ヒートパイプが万一破損した
場合においても、密閉容器であるヒートパイプ内のわず
かの作動流体の熱媒油が流失しすぐ蒸発するが炉本体や
上昇管にはほとんど影響を与えず安全である。In the device of the present invention, even if the heat pipe were to break, a small amount of the working fluid heat transfer oil in the heat pipe, which is a closed container, would be washed away and evaporate immediately, but this would have little effect on the furnace body or riser pipe. It is safe and does not cause any damage.
本発明によるコークス炉ガスの熱回収は次のように有利
性をまとめることができる。すなわち
（１） 万が−ヒートパイプ管束の１本が破損しても
ノセイプ内の作動流体はわずかな量のため安全である。The advantages of coke oven gas heat recovery according to the invention can be summarized as follows. That is, (1) - Even if one of the heat pipe bundles is damaged, the amount of working fluid in the nosape is small, so it is safe.
（２）従来提案されている上昇管内壁に伝熱管を配設す
る方法と比べて本装置はコークス炉ガスとの接触効率が
良い上、既設上昇管の改造や新設を祈りことな〈実施で
きる。(2) Compared to the conventionally proposed method of arranging heat transfer tubes on the inner wall of the riser pipe, this device has better contact efficiency with coke oven gas, and can be implemented without the need for remodeling existing riser pipes or installing new ones. .
（３＞ また本装置は熱媒体本管とはフレキシブルホ
ースで接続されているため、上昇管の上方へ抜き出せる
ため上昇管内のカーゼン掃除作業が容易である。また従
来の装置では発生コークス炉ガスが冷却されガス中のタ
ール分等が凝縮し伝熱面を汚し、はなはだしい場合はガ
ス通路を閉塞せしめるが、本装置では上方へ抜き出せる
ため、点検掃除も容易である。(3> In addition, since this device is connected to the heat medium main pipe with a flexible hose, it can be pulled out above the riser pipe, making it easy to clean the case inside the riser pipe.In addition, with conventional equipment, the generated coke oven gas When the gas is cooled, tar and other substances in the gas condense, staining the heat transfer surface and, in severe cases, clogging the gas passage.However, with this device, it can be extracted upwards, making inspection and cleaning easy.
次に、本発明による装置を用いて石炭を乾燥させて熱回
収を行った具体例を図面によって説明する。Next, a specific example of drying coal and recovering heat using the apparatus according to the present invention will be described with reference to the drawings.
第１図に示すように、コークス炉９の各々の上列管７に
ヒートパイプ１を束ねた管束を装入した本発明の装置２
を設置し、これに、熱媒を通す本管４及び５に並列にフ
レキシブルホース３及び６を接続する。As shown in FIG. 1, an apparatus 2 of the present invention includes a tube bundle in which heat pipes 1 are bundled in each upper row tube 7 of a coke oven 9.
is installed, and flexible hoses 3 and 6 are connected in parallel to main pipes 4 and 5 through which the heat medium passes.
ヒートパイプ１により２００〜３０００Ｃに加熱された
熱媒は、フレキシブルホース３を通り、本管４を経て石
炭乾燥機２４に入る。石炭乾燥機では９％の水分の石炭
を６チの水分にする。The heat medium heated to 200 to 3000 C by the heat pipe 1 passes through the flexible hose 3 and enters the coal dryer 24 via the main pipe 4. In a coal dryer, coal with a moisture content of 9% is reduced to a moisture content of 6%.
一方発生するコークス炉ガスは６００°Ｃより４００°
Ｃ程度に温度降下する。On the other hand, the coke oven gas generated is 400°C rather than 600°C.
The temperature drops to about C.
なお、石炭乾燥機はこのコークス炉に装入される石炭の
全量２００ Ｔ／ｌ−１−ｔで処理できる。Note that the coal dryer can process the total amount of coal charged into the coke oven at 200 T/l-1-t.
第１図は本発明の装置を設置した１具体例の説明図であ
る。
図において、
Ｊ・・・・・ヒートパイプ、
２・・・・・・本発明の熱回収装置、
３・・・・・・出側フレキシブルホース、４・・・・・
・出側熱媒本管、
５・・・・・入側熱媒本管、
６・・・・・入側フレキシブルホース、７・・・・・・
上昇管、
８・・・・・ドライメーン、
９・・・・・コークス炉、
２１・・・・・熱媒本管、
２２・・・・・・循環ポンプ、
２３・・・・熱媒タンク、
２４・・・・・・石炭乾燥機、
Ａ・・・・・・湿度、
Ｂ・・・・・・乾燥炭FIG. 1 is an explanatory diagram of one specific example in which the apparatus of the present invention is installed. In the figure, J...Heat pipe, 2...Heat recovery device of the present invention, 3...Outlet flexible hose, 4...
・Outlet heat medium main pipe, 5...Inlet heat medium main pipe, 6...Inlet flexible hose, 7...
Rising pipe, 8... Dry main, 9... Coke oven, 21... Heat medium main pipe, 22... Circulation pump, 23... Heat medium tank , 24...Coal dryer, A...Humidity, B...Drying coal
Claims (1)
装入したことを特徴とするコークス炉発生ガスの熱回収
装置。A heat recovery device for coke oven gas, characterized in that a tube bundle in which heat pipes are bundled is placed in a coke oven gas riser tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17402482A JPS5964690A (en) | 1982-10-05 | 1982-10-05 | Device to recover heat from gas generated in coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17402482A JPS5964690A (en) | 1982-10-05 | 1982-10-05 | Device to recover heat from gas generated in coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5964690A true JPS5964690A (en) | 1984-04-12 |
Family
ID=15971300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17402482A Pending JPS5964690A (en) | 1982-10-05 | 1982-10-05 | Device to recover heat from gas generated in coke oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619491A (en) * | 1984-06-25 | 1986-01-17 | Kawasaki Steel Corp | Coke oven |
-
1982
- 1982-10-05 JP JP17402482A patent/JPS5964690A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619491A (en) * | 1984-06-25 | 1986-01-17 | Kawasaki Steel Corp | Coke oven |
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