JPH072596Y2 - Water heater for coke dry fire extinguishing equipment - Google Patents
Water heater for coke dry fire extinguishing equipmentInfo
- Publication number
- JPH072596Y2 JPH072596Y2 JP7177488U JP7177488U JPH072596Y2 JP H072596 Y2 JPH072596 Y2 JP H072596Y2 JP 7177488 U JP7177488 U JP 7177488U JP 7177488 U JP7177488 U JP 7177488U JP H072596 Y2 JPH072596 Y2 JP H072596Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- heat exchanger
- indirect heat
- boiler
- coke
- 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 - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 76
- 239000000571 coke Substances 0.000 title claims description 27
- 238000011084 recovery Methods 0.000 claims description 29
- 239000002918 waste heat Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Coke Industry (AREA)
Description
【考案の詳細な説明】 「考案の目的」 （産業上の利用分野） この考案は、廃熱回収ボイラを備えたコークス乾式消火
設備における給水の加熱装置に関するものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a feed water heating apparatus in a coke dry fire extinguisher equipped with a waste heat recovery boiler.
（従来の技術） 廃熱回収ボイラを備えたコークス乾式消火設備において
は、コークス炉より排出された赤熱コークスを所定のコ
ークチャンバーに装入し冷却用ガスを循環せしめること
により、コークスの保有する熱量を循環ガスに移行せし
め廃熱回収ボイラによりガス顕熱として回収している。(Prior art) In the coke dry fire extinguishing equipment equipped with a waste heat recovery boiler, the amount of heat retained by the coke is charged by charging the red hot coke discharged from the coke oven into a predetermined coke chamber and circulating a cooling gas. Is transferred to the circulating gas and is recovered as gas sensible heat by the waste heat recovery boiler.
第２図は特開昭60−260686号により通常の廃熱回収のフ
ローを要約したものである。赤熱コークスはコークチャ
ンバー１に装入される。冷却用循環ガスは、ガス循環ブ
ロワー２により、コークチャンバー１→ダストキャッチ
ャー３→廃熱回収ボイラ４→間接熱交換器５→ガス循環
ブロワー２→間接熱交換器５→コークチャンバー１の順
序で循環せしめられる。廃熱回収ボイラ４への給水は、
ボイラ給水タンク６から脱気器給水ポンプ７により水対
水熱交換器８を経由して、ガスの循環経路内に設けられ
た間接熱交換器５へ送られ、熱交換により昇温された給
水は水対水熱交換器８へ送られ、導入側給水へ熱を与え
てから脱気器９へ導入される。一方廃熱ボイラ４におい
て発生した蒸気は、蒸気管10により系外へ取り出される
が、一部は脱気用蒸気管11を経由して脱気器９へ送ら
れ、前述の水対水熱交換器８を経由してきた給水と混合
され昇温脱気され、ボイラ給水ポンプ12により廃熱回収
ボイラ４に供給されるようになっている。FIG. 2 summarizes the flow of ordinary waste heat recovery according to JP-A-60-260686. The red hot coke is charged into the coke chamber 1. The circulation gas for cooling is circulated by the gas circulation blower 2 in the order of coke chamber 1 → dust catcher 3 → waste heat recovery boiler 4 → indirect heat exchanger 5 → gas circulation blower 2 → indirect heat exchanger 5 → coke chamber 1. Be punished. Water supply to the waste heat recovery boiler 4
Water supplied from the boiler water tank 6 to the indirect heat exchanger 5 provided in the gas circulation path by the deaerator water supply pump 7 via the water-to-water heat exchanger 8 and heated by heat exchange. Is sent to the water-to-water heat exchanger 8 to give heat to the feed water on the introduction side and then introduced to the deaerator 9. On the other hand, the steam generated in the waste heat boiler 4 is taken out of the system by the steam pipe 10, but a part of the steam is sent to the deaerator 9 via the degassing steam pipe 11, and the water-to-water heat exchange described above is performed. It is mixed with the feed water that has passed through the vessel 8, is heated and deaerated, and is supplied to the waste heat recovery boiler 4 by the boiler feed water pump 12.
前述したように、間接熱交換器５に導入される給水は、
事前に水対水熱交換器８において、循環冷却ガスの水露
点以上に昇温されているから、間接熱交換器５の管外壁
に結露することはなく、腐食およびダストの堆積が見ら
れることはない。しかし間接熱交換器５の熱交換用配管
は、循環冷却用ガスと直接接しているため、管の破孔時
には、ガス中の酸性成分と反応し強酸を生成し下流側の
設備を損傷する恐れがある。As described above, the water supply introduced into the indirect heat exchanger 5 is
In the water-to-water heat exchanger 8, the temperature is raised above the water dew point of the circulating cooling gas, so that there is no dew condensation on the outer wall of the pipe of the indirect heat exchanger 5, and corrosion and dust accumulation are observed. There is no. However, since the heat exchange pipe of the indirect heat exchanger 5 is in direct contact with the circulation cooling gas, when the pipe is ruptured, it may react with the acidic component in the gas to generate a strong acid and damage downstream equipment. There is.
（考案が解決しようとする課題） 前述のように、このような従来技術においては、冷却用
ガスの循環経路内に設けた間接熱交換器に導入する給水
を、予め水対水熱交換器を経由せしめることにより水露
点以上とすることにより管外壁の腐食等の恐れを生ずる
ことはないが、間接熱交換器における熱交換用配管の破
孔等に伴なう事故に発生に対する配慮はなされていな
い。(Problems to be Solved by the Invention) As described above, in such a conventional technique, the water supplied to the indirect heat exchanger provided in the circulation path of the cooling gas is supplied to the water-to-water heat exchanger in advance. Although there is no risk of corrosion of the outer wall of the pipe when the temperature is above the water dew point by passing it through, consideration is given to the occurrence of accidents such as breakage of the heat exchange pipe in the indirect heat exchanger. Absent.
もし破孔の発生した場合には、給水がガス流の中に漏出
し、ガス中のHCl、H2Ｓ、SO2、SO3等のガスが溶け込
み、強酸性の水溶液を生成し、下流の設備を酸化腐食さ
せる恐れがある。通常の設備では間接熱交換器には常時
高圧で給水がなされているから、早期に漏水事故を発見
し、漏水量の少ない内に止めることは非常に困難であ
る。If a puncture occurs, the feed water leaks into the gas stream, and HCl, H 2 S, SO 2 , SO 3 and other gases in the gas dissolve into it to form a strongly acidic aqueous solution, May oxidize and corrode equipment. Since water is always supplied to the indirect heat exchanger at a high pressure in ordinary equipment, it is very difficult to detect a leak accident early and stop it while the amount of leak is small.
本考案はこのような現状に鑑み創案されたものであり、
間接熱交換器に供給され循環する水路を閉ループとし
て、仮りに間接熱交換器において破孔が発生しても、ガ
ス循環ブロワー、廃ガスダクトその他の設備への損傷を
最小に止める給水加熱装置を提供することを目的とす
る。The present invention was created in view of such a current situation,
Provides a feed water heating device that minimizes damage to the gas circulation blower, waste gas ducts, and other equipment even if a rupture occurs in the indirect heat exchanger by using the water channel that is supplied to the indirect heat exchanger and circulates as a closed loop. The purpose is to do.
「考案の構成」 （課題を解決するための手段） 前述の目的を達成するために本考案者等は、コークチャ
ンバーと廃熱回収ボイラ並びに間接熱交換器を備え、ガ
ス循環ブロワーによりガスを循環せしめ、給水が脱気
器、廃熱回収ボイラーを経て蒸気として回収される廃熱
回収装置において、ボイラ給水タンクから脱気器への給
水と間接熱交換器出側の熱水とを熱交換させる水対水熱
交換器と、間接熱交換器との間に、膨張タンクと循環ポ
ンプを設け、前記水対水熱交換器と前記間接熱交換器の
間に、閉ループの循環水路を形成せしめたことを特徴と
するコークス乾式消火設備における給水加熱装置を茲に
提案する。“Constitution of device” (Means for solving the problem) In order to achieve the above-mentioned object, the present inventors have provided a coke chamber, a waste heat recovery boiler, and an indirect heat exchanger, and circulate the gas by a gas circulation blower. In the waste heat recovery device, in which the feed water is recovered as steam via the deaerator and the waste heat recovery boiler, heat is exchanged between the water supply from the boiler water tank to the deaerator and the hot water on the outlet side of the indirect heat exchanger. An expansion tank and a circulation pump were provided between the water-to-water heat exchanger and the indirect heat exchanger, and a closed-loop circulating water channel was formed between the water-to-water heat exchanger and the indirect heat exchanger. We propose a water heater for coke dry fire extinguishing equipment.
このように、間接熱交換器と水対水熱交換器間の循環水
路を閉ループとすることのみで、脱気器から廃熱回収ボ
イラへのメインの給水系統とは別の小規模の循環水路と
なるので、仮りに破孔しても漏水量を少なくできる。In this way, only by making the circulation channel between the indirect heat exchanger and the water-to-water heat exchanger into a closed loop, a small-scale circulation channel different from the main water supply system from the deaerator to the waste heat recovery boiler. Therefore, even if a hole is punctured, the amount of water leakage can be reduced.
（作用） 本考案の特徴は、給水タンクから脱気器への給水と間接
熱交換器の出側の熱水とを熱交換せしめる水対水熱交換
器と、間接熱交換器との間に循環ポンプと膨張タンクを
設け、間接熱交換器と水対水熱交換器の間に閉ループの
循環水路を設けたことである。この閉ループ内を循環す
る水は、ガスの顕熱を回収し昇温されるが、水対水熱交
換器を脱気器の入り側に設けて循環水路の水とボイラ給
水タンクからの給水を熱交換させることにしたので、循
環水路中の水温は略一定に維持できる。膨張タンクは循
環ポンプの前側に設けて閉循環ループ内における加熱条
件等による容積変動を吸収するようになっており、通常
はエアベンド弁を開にして膨張タンクを大気圧にして系
内の圧力を安定化する働きをする。又タンクのレベル
計、水位検出器を設けることにより、系内の異状な保有
水の減少を早期に検出することもできる。補助的な熱回
収装置としての間接熱交換器を配設する場所は、メイン
の熱回収装置としての廃熱回収ボイラの出側でコークチ
ャンバーとの間であれば、ガス循環ブロワーの前後何れ
でもかまわない。又、設置する個数も一個でも複数でも
よく、コークチャンバーの大きさ、廃熱回収ボイラの仕
様等により適宜選択することができる。水対水熱交換器
内は、当然熱交換用金属隔壁で双方の水流は隔絶されて
いるから、仮りに間接熱交換器において破孔が生じても
漏れるのは最大で循環水路中の保有水のみであり、従来
技術に比較し著しく被害を小さくでき、又、脱気器、ボ
イラ給水ポンプを経て廃熱回収ボイラ伝熱管へ供給され
る系統とは別系統であるため全く問題はない。廃熱回収
ボイラからの蒸気の回収、および脱気器、ボイラ給水ポ
ンプの機能等については本考案も従来方法と変らない。(Operation) The feature of the present invention is that between the water-to-water heat exchanger that exchanges heat between the water supply from the water supply tank to the deaerator and the hot water on the outlet side of the indirect heat exchanger, and the indirect heat exchanger. A circulation pump and an expansion tank are provided, and a closed loop circulation water passage is provided between the indirect heat exchanger and the water-to-water heat exchanger. The water circulating in this closed loop recovers the sensible heat of the gas and is heated, but a water-to-water heat exchanger is installed on the inlet side of the deaerator to supply water in the circulating water channel and water supply from the boiler water tank. Since the heat is exchanged, the water temperature in the circulating water channel can be maintained substantially constant. The expansion tank is installed on the front side of the circulation pump to absorb volume fluctuation due to heating conditions in the closed circulation loop.Normally, the air bend valve is opened and the expansion tank is set to atmospheric pressure to control the pressure in the system. Acts to stabilize. Further, by providing a tank level meter and a water level detector, it is possible to detect the abnormal reduction of the retained water in the system at an early stage. The location of the indirect heat exchanger as an auxiliary heat recovery device can be installed either before or after the gas circulation blower as long as it is between the coke chamber on the outlet side of the waste heat recovery boiler as the main heat recovery device. I don't care. Further, the number to be installed may be one or plural, and can be appropriately selected depending on the size of the coke chamber, specifications of the waste heat recovery boiler, and the like. In the water-to-water heat exchanger, both water flows are naturally isolated by the metal partition wall for heat exchange, so even if a rupture occurs in the indirect heat exchanger, the maximum leakage will be the water retained in the circulating water channel. However, there is no problem because the damage can be remarkably reduced as compared with the prior art, and the system is different from the system that is supplied to the waste heat recovery boiler heat transfer tube via the deaerator and the boiler feed water pump. The present invention is no different from the conventional method regarding the recovery of steam from the waste heat recovery boiler and the functions of the deaerator and the boiler feed water pump.
（実施例） 本考案の実施例を第１図で示す。図面はコークスの乾式
消火設備における廃熱回収に関する諸器機の配置と、給
水系統と冷却ガスの循環を示す説明図である。(Embodiment) An embodiment of the present invention is shown in FIG. The drawing is an explanatory view showing the arrangement of various devices relating to waste heat recovery in a dry fire extinguishing system of coke, and the circulation of a water supply system and a cooling gas.
赤熱コークスは、コークチャンバー１に装入される。冷
却用循環ガスは、ガス循環ブロワー２により、コークチ
ャンバー１→ダストキャッチャー３→廃熱回収ボイラ３
→間接熱交換器５→循環ブロワー２→間接熱交換器５→
コークチャンバー１の順序で循環せしめられる。この実
施例においては、ガス循環ブロワー２の前後に夫々一機
づつ間接熱交換器を配設したから、熱交換用循環ポンプ
により循環される閉ループの循環水路13は、間接熱交換
器５→間接熱交換機５→膨張タンク14→水対水熱交換器
８→循環ポンプ15→間接熱交換機５間に形成されること
になる。間接熱交換器の内圧は、循環水路13内を水が流
れる圧力損失を補うポンプ圧とし、且つ膨張タンク内の
水位を検出し僅かな漏水も検出できるようにした。一方
廃熱回収ボイラ４への給水は、ボイラ給水タンク６から
脱気器給水ポンプ７により水対水熱交換器８へ送給さ
れ、前述の閉ループの循環水との熱交換により昇温され
て脱気器９へ送られ、脱気用蒸気管11からの蒸気と混合
され更に昇温脱気され、ボイラ給水ポンプ12により廃熱
回収ボイラ４に供給され、発生した蒸気は、蒸気管10に
より系外に取り出されるようになっている。The red hot coke is charged into the coke chamber 1. The circulating gas for cooling is fed from the gas circulation blower 2 to the coke chamber 1 → dust catcher 3 → waste heat recovery boiler 3
→ Indirect heat exchanger 5 → Circulation blower 2 → Indirect heat exchanger 5 →
The coke chambers 1 are circulated in the order. In this embodiment, one indirect heat exchanger is arranged in front of the gas circulation blower 2 and one indirect heat exchanger is arranged in front of the gas circulation blower 2. The heat exchanger 5 → expansion tank 14 → water-to-water heat exchanger 8 → circulation pump 15 → indirect heat exchanger 5 is formed. The internal pressure of the indirect heat exchanger is set to a pump pressure that compensates for the pressure loss of water flowing in the circulating water channel 13, and the water level in the expansion tank is detected so that even a slight leak can be detected. On the other hand, the water supplied to the waste heat recovery boiler 4 is sent from the boiler water supply tank 6 to the water-to-water heat exchanger 8 by the deaerator water supply pump 7, and is heated by the heat exchange with the closed loop circulating water. The steam is sent to the deaerator 9, mixed with the steam from the degassing steam pipe 11, further heated and degassed, and supplied to the waste heat recovery boiler 4 by the boiler feed water pump 12, and the generated steam is steamed by the steam pipe 10. It is designed to be taken out of the system.
「考案の効果」 本考案の装置による廃熱回収ボイラを備えたコークス乾
式消火設備における給水加熱装置においては、廃熱回収
ボイラに供給される給水の送給系統を、コークスの冷却
用ガス循環経路内に配設された間接熱交換器と水対水熱
交換器との間のみを循環する閉ループを形成する循環水
路とは、別系統のものとしたので、仮りにこの水路がガ
ス循環経路内で破孔したとしても、少量の循環水路中の
保有水が漏出するのみであり、従来技術と異なり、ボイ
ラ給水ポンプの高圧が直接かかっているのに比較し圧力
も小さいので漏水の勢いを減ずることができる。更に膨
張タンクには水位検出装置等を設置することにより、事
故を未然に防止することもでき、コークス乾式消火設備
の順調な継続運転を長時間行なうことができる。"Effect of the device" In the feed water heating device in the coke dry fire extinguisher equipped with the waste heat recovery boiler by the device of the present invention, the feed water supply system for the waste heat recovery boiler is the coke cooling gas circulation path. Since the circulation water channel that forms a closed loop that circulates only between the indirect heat exchanger and the water-to-water heat exchanger that is placed inside is a separate system, this water channel is temporarily in the gas circulation path. Even if a hole is breached in, only a small amount of water in the circulating water channel leaks out, and unlike the conventional technology, the pressure is small compared to the direct high pressure of the boiler feed pump, so the momentum of water leakage is reduced. be able to. Further, by installing a water level detection device or the like in the expansion tank, it is possible to prevent accidents, and the coke dry fire extinguishing equipment can be smoothly operated for a long time.
第１図は本考案の実施例であって、コークスの乾式消火
設備における廃熱回収に関する諸器機の配置と給水加熱
系統の説明図であり、第２図は従来公知の同様な設備の
給水加熱系統を示すものである。 1:コークチャンバー、9:脱気器 2:ガス循環ブロワー、10:蒸気管 3:ダストキャッチャー、11:脱気用蒸気管 4:廃熱回収ボイラ、12:ボイラ給水ポンプ 5:間接熱交換器、13:閉ループの循環水路 6:ボイラ給水タンク、14:膨張タンク 7:脱気器給水ポンプ、15:循環ポンプ 8:水対水熱交換器FIG. 1 is an embodiment of the present invention, and is an explanatory view of the arrangement of various devices and a feed water heating system for waste heat recovery in a dry fire extinguishing equipment for coke, and FIG. It shows the system. 1: Coke chamber, 9: Deaerator 2: Gas circulation blower, 10: Steam pipe 3: Dust catcher, 11: Degassing steam pipe 4: Waste heat recovery boiler, 12: Boiler feed pump 5: Indirect heat exchanger , 13: Closed loop circulation water channel 6: Boiler water supply tank, 14: Expansion tank 7: Deaerator water supply pump, 15: Circulation pump 8: Water-to-water heat exchanger
Claims (1)
間接熱交換器を備え、ガス循環ブロワーによりガスを循
環せしめ、給水が脱気器、廃熱回収ボイラーを経て蒸気
として回収される廃熱回収装置において、ボイラ給水タ
ンクから脱気器への給水と間接熱交換器出側の熱水とを
熱交換させる水対水熱交換器と、間接熱交換器との間
に、膨張タンクと循環ポンプを設け、前記水対水熱交換
器と前記間接熱交換器の間に、閉ループの循環水路を形
成せしめたことを特徴とするコークス乾式消火設備にお
ける給水加熱装置。1. A waste heat recovery device comprising a coke chamber, a waste heat recovery boiler, and an indirect heat exchanger, wherein gas is circulated by a gas circulation blower, and feed water is recovered as steam through a deaerator and a waste heat recovery boiler. In the above, a water-to-water heat exchanger for exchanging heat between the water supply from the boiler water tank to the deaerator and the hot water on the outlet side of the indirect heat exchanger, and an indirect heat exchanger, an expansion tank and a circulation pump are installed. A feed water heating apparatus in a coke dry fire extinguisher facility, characterized in that a closed loop circulating water channel is formed between the water-to-water heat exchanger and the indirect heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177488U JPH072596Y2 (en) | 1988-06-01 | 1988-06-01 | Water heater for coke dry fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177488U JPH072596Y2 (en) | 1988-06-01 | 1988-06-01 | Water heater for coke dry fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01177254U JPH01177254U (en) | 1989-12-18 |
| JPH072596Y2 true JPH072596Y2 (en) | 1995-01-25 |
Family
ID=31296964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7177488U Expired - Lifetime JPH072596Y2 (en) | 1988-06-01 | 1988-06-01 | Water heater for coke dry fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072596Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013024615A1 (en) * | 2011-08-12 | 2013-02-21 | スチールプランテック株式会社 | Coke dry quenching equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2556596B2 (en) * | 1989-09-29 | 1996-11-20 | 住友金属工業株式会社 | Heat recovery device for coke dry fire extinguishing equipment |
-
1988
- 1988-06-01 JP JP7177488U patent/JPH072596Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013024615A1 (en) * | 2011-08-12 | 2013-02-21 | スチールプランテック株式会社 | Coke dry quenching equipment |
| CN102952556A (en) * | 2011-08-12 | 2013-03-06 | 钢铁普蓝特克股份有限公司 | Coke dry quenching equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01177254U (en) | 1989-12-18 |
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