JPS605280Y2 - Combustion waste gas heat recovery equipment - Google Patents
Combustion waste gas heat recovery equipmentInfo
- Publication number
- JPS605280Y2 JPS605280Y2 JP1980148612U JP14861280U JPS605280Y2 JP S605280 Y2 JPS605280 Y2 JP S605280Y2 JP 1980148612 U JP1980148612 U JP 1980148612U JP 14861280 U JP14861280 U JP 14861280U JP S605280 Y2 JPS605280 Y2 JP S605280Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat exchanger
- piping
- temperature
- waste 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
Landscapes
- Chimneys And Flues (AREA)
Description
【考案の詳細な説明】
本案はボイラー、焼却炉その他の燃焼装置またはキルン
等の乾燥装置における燃焼廃ガスの熱回収装置に関し、
熱交換器の腐食を防止することを目的とする。[Detailed description of the invention] This invention relates to a heat recovery device for combustion waste gas in boilers, incinerators, other combustion devices, or drying devices such as kilns.
The purpose is to prevent corrosion of heat exchangers.
ボイラー、焼却炉等の燃焼装置またはキルン等の乾燥装
置から排出される廃ガス(燃焼ガス)の熱回収装置はす
でに公知であるが、一般に、煙道内に熱交換器を設置し
、これを熱媒体として常温の液体、例えば水を供給して
いる。Heat recovery devices for waste gas (combustion gas) discharged from combustion devices such as boilers and incinerators or drying devices such as kilns are already known, but generally a heat exchanger is installed in the flue and the A room temperature liquid such as water is supplied as a medium.
したがって、熱交換器と廃ガスとの温度差とのために熱
交換器の外周に結露が生じ、廃ガスがいおう分を含んで
いる場合には、そのために熱交換器に酸腐食が起る。Therefore, if the temperature difference between the heat exchanger and the waste gas causes dew condensation on the outer periphery of the heat exchanger, and if the waste gas contains sulfur, acid corrosion will occur on the heat exchanger. .
このため、従来は耐酸性の材料で熱交換器が高価となり
、かつ酸腐食を防ぐために廃ガスの酸露点よりも50〜
60℃高い温度までしか熱回収ができない難点がある。For this reason, conventionally, heat exchangers made of acid-resistant materials were expensive, and in order to prevent acid corrosion, heat exchangers were
The drawback is that heat can only be recovered up to a temperature 60°C higher.
そして、低温側の流体温度も低いため、それを更に蒸気
その他の熱源で再加熱してから熱交換させるなどしてい
るのが現状で熱効率が悪い難点もある。Furthermore, since the temperature of the fluid on the low temperature side is also low, it is currently necessary to reheat it using steam or other heat sources before exchanging heat, which has the disadvantage of poor thermal efficiency.
本案はいおう分を含む廃ガスの熱回収における前記のよ
うな問題を解決するものである。The present invention is intended to solve the above-mentioned problems in the heat recovery of waste gas containing heat.
これを図面の実施例について説明すると、1はボイラー
、焼却炉、キルンその他の燃焼または乾燥装置で、その
いおう分を含んだガスは、煙道2から煙突3に導かれ大
気に放出するようになっている。To explain this with reference to the embodiment shown in the drawings, 1 is a boiler, incinerator, kiln, or other combustion or drying device, and gas containing sulfur is led from a flue 2 to a chimney 3 and released into the atmosphere. It has become.
4は煙道2の適所に配置された熱交換器で、これで廃ガ
スの熱回収をする。4 is a heat exchanger placed at an appropriate location in the flue 2, which recovers heat from the waste gas.
5は熱交換器3の前段において煙道2に設けたファンで
、これで廃ガスを熱交換器3に送り込むが、ボイラなど
の押込ファンに余裕がある場合は、ファン2は除くこと
も可能である。5 is a fan installed in the flue 2 at the front stage of the heat exchanger 3, which sends the waste gas to the heat exchanger 3, but if there is room for a forced fan such as in a boiler, fan 2 can be omitted. It is.
6は第2の熱交換器で、これは第1の熱交換器4と配管
7,8で遠吠に接続され、酸露点温度程度に加熱された
熱媒体を熱交換器4゜6間で循環させるようになってい
る。Reference numeral 6 designates a second heat exchanger, which is connected to the first heat exchanger 4 through piping 7 and 8, and transfers a heat medium heated to about the acid dew point temperature between the heat exchangers 4 and 6. It is designed to circulate.
9は配管7に介在させたポンプで、これで熱媒体を循環
させる。Reference numeral 9 denotes a pump interposed in the pipe 7, which circulates the heat medium.
10は配管7に接続した膨張タンクで、これで運転開始
時の熱媒体の昇温による熱膨張を吸収する、とともに、
ポンプ9に吸込圧をかけるものである。Reference numeral 10 denotes an expansion tank connected to the pipe 7, which absorbs thermal expansion due to temperature rise of the heat medium at the start of operation, and
This applies suction pressure to the pump 9.
11は配管7に設けた、熱交換器6で熱交換を終った熱
媒体の温度を検出し、後述の調製弁を調製する温度調節
装置、12は熱交換器6に接続した熱回収用の配管で、
これで、熱交換器4.6を循還する熱媒体との間におい
て熱交換をするために水その他の液体を熱交換器6に送
り込みかつそれを取出するものである。Reference numeral 11 indicates a temperature control device installed in the piping 7 to detect the temperature of the heat medium that has completed heat exchange in the heat exchanger 6, and adjusts the regulating valve described later. Reference numeral 12 indicates a heat recovery device connected to the heat exchanger 6. With piping,
This allows water or other liquids to be fed into and removed from the heat exchanger 6 for heat exchange with the heat medium circulating through the heat exchanger 4.6.
13は配管12に介在させたポンプ、14は配管12に
介在させた調製弁で、その開度が温度調節装置11から
の信号で調製され、熱交換器6に供給する氷などの量を
調製して配管7内の循環熱媒体の温度を常に酸露点温度
程度に維持させるようになっている。13 is a pump interposed in the piping 12, and 14 is a regulating valve interposed in the piping 12, the opening degree of which is adjusted by a signal from the temperature control device 11 to adjust the amount of ice etc. to be supplied to the heat exchanger 6. The temperature of the circulating heat medium in the pipe 7 is always maintained at about the acid dew point temperature.
15はポンプ13の前段に配置された水その他の液体の
ための槽体で、これから熱交換器6に供給され、それか
ら出た水その他の液体はボイラに供給したり、タンクに
貯蔵するなどして適宜に使用される。Reference numeral 15 denotes a tank body for water and other liquids placed before the pump 13, which is supplied to the heat exchanger 6, and the water and other liquids discharged from it are supplied to the boiler or stored in a tank. be used as appropriate.
配管7,8を循環する熱媒体は、酸露点温度程度に加熱
され、かつそれは100℃以上になるから有機化合物を
主とする液体を使用することが適し、水を使用するとき
はその沸点を上げるために加圧装置を設けることが適す
る。The heat medium circulating through the pipes 7 and 8 is heated to about the acid dew point temperature, which is 100°C or higher, so it is suitable to use a liquid mainly composed of organic compounds, and when using water, the boiling point should be It is suitable to provide a pressurizing device for raising the temperature.
配管7,8内の熱媒体は、酸露点温度程度に加熱されて
いるが、その運転開始時には低温である。The heat medium in the pipes 7 and 8 is heated to about the acid dew point temperature, but is at a low temperature at the start of operation.
この加熱は、熱交換器4で行っても、配管7,8の適所
に加熱装置(図示しない)を設け、これで熱媒体の温度
が酸露点温度程度に上昇するまで加熱され、以後は熱交
換器4で加熱されるようにすることも可能である。Even if this heating is performed using the heat exchanger 4, a heating device (not shown) is provided at an appropriate location in the pipes 7 and 8, and the heat medium is heated until the temperature of the heat medium rises to about the acid dew point temperature. It is also possible to provide heating in the exchanger 4.
本案の装置は上記の構成からなっており、配管7.8で
循環させている熱媒体が熱交換器4にはいると、それが
それよりも高温である廃ガスとの間において熱交換をな
し、高温となって熱交換器4から出る。The device of the present invention has the above-mentioned configuration, and when the heat medium circulated through the pipes 7.8 enters the heat exchanger 4, it exchanges heat with the waste gas whose temperature is higher than that of the heat medium. None, it becomes high temperature and comes out of the heat exchanger 4.
高温となった熱媒体は第2の熱交換器6にはいり、それ
に配管12で供給されている水その他の低温の液体との
間で再度熱交換が行われ、配管12で供給された水など
が高温となる。The heated heat medium enters the second heat exchanger 6, where it undergoes heat exchange again with water or other low-temperature liquid supplied through the piping 12, and the water, etc. supplied through the piping 12 is becomes high temperature.
その高温となった水などは適宜使用することで、その熱
を利用する。The heat can be utilized by using the high-temperature water as appropriate.
本案の装置は上記のようにして廃ガスの熱を回収するが
、いおう分を含む廃ガスが通過する煙道2に設けられた
熱交換器4に供給される熱媒体は、それと第2の熱交換
器6との間を配管7,8を介して循環させているから、
ランニングコストの上昇がなく、経済的に運転ができる
。The device of the present invention recovers the heat of the waste gas as described above, but the heat medium supplied to the heat exchanger 4 installed in the flue 2 through which the waste gas containing sulfur passes is Since it is circulated between the heat exchanger 6 and the pipes 7 and 8,
There is no increase in running costs and it can be operated economically.
そして、前記の循環熱媒体は、酸露点温度程度の温度に
加熱されているから、熱交換器4のパイプの外周面に結
露が生じることなく、酸腐食の問題を解決でき、熱交換
器4を耐酸性の高価な材料で形成することが不要となり
コストの引下げに寄与しうる。Since the circulating heat medium is heated to a temperature approximately equal to the acid dew point temperature, dew condensation does not occur on the outer peripheral surface of the pipe of the heat exchanger 4, and the problem of acid corrosion can be solved. This eliminates the need for the material to be made of acid-resistant and expensive material, which can contribute to cost reduction.
結露の問題を解決した結果、熱交換器4における廃ガス
温度を酸霧温度近くまで低下させることが可能となり、
熱の回収効率を向上させることができる。As a result of solving the problem of condensation, it is now possible to lower the temperature of the waste gas in the heat exchanger 4 to near the acid fog temperature.
Heat recovery efficiency can be improved.
熱交換器4における熱回収効率が高く、それを通過する
循環熱媒体はより高温になっているから熱交換器6に配
管12で供給されている水その他の液体も高温にでき、
それの利用価値も高くしうる。Since the heat recovery efficiency in the heat exchanger 4 is high and the circulating heat medium passing through it has a higher temperature, water and other liquids supplied to the heat exchanger 6 through the piping 12 can also be heated to a higher temperature.
It can also increase its utility value.
図面は本案の実施例のブロック図である。
2・・・・・・煙道、4,6・・・・・・熱交換器、7
.訃・・・・・配管、11・・・・・・温度調節装置
12・・・・・・配管、14・・・・・・調製弁。The drawing is a block diagram of an embodiment of the present invention. 2... Flue, 4, 6... Heat exchanger, 7
.. Death: Piping, 11: Temperature control device
12...Piping, 14...Adjustment valve.
Claims (1)
交換器と、前記煙動外に設けた第2の熱交換器とを有し
、前記第1と第2の熱交換器とは配管で環状に接続され
て、それらを通過する熱媒体は循環するようになってお
り、かつ第2の熱交換器には、前記の循環熱媒体との間
で熱交換をする水その他の液体を供給する配管がされる
、とともに、その配管には調整弁が介在させてあり、第
1と第2の熱交換器を接続する配管にはポンプと第2の
熱交換器を出た熱媒体の温度を検出して前記調製弁の開
度を調製する温度調節装置とが設けられ、前記循環熱媒
体の温度を酸露点温度程度として第1の熱交換器に送り
込む燃焼廃ガスの熱回収装置。 2 第1と第2の熱交換器を接続する配管に、それを通
過する熱媒体を酸露点温度程度まで加熱するための加熱
装置が設けられた実用新案登録請求の範囲の記載1の燃
焼廃ガスの熱回収装置。[Claims for Utility Model Registration] 1. A heat exchanger having a first heat exchanger installed in a flue for flue gas containing sulfur, and a second heat exchanger installed outside the flue, The first and second heat exchangers are connected in an annular manner by piping, so that the heat medium passing through them circulates, and the second heat exchanger has a connection with the circulating heat medium. There is piping for supplying water or other liquid for heat exchange between the first and second heat exchangers, and a regulating valve is interposed in the piping, and a pump and a second heat exchanger are installed in the piping connecting the first and second heat exchangers. a temperature control device that detects the temperature of the heat medium exiting the second heat exchanger and adjusts the opening degree of the regulating valve; A heat recovery device for the combustion waste gas sent to the vessel. 2. Combustion waste according to claim 1 of claim 1, in which the piping connecting the first and second heat exchangers is provided with a heating device for heating the heat medium passing through it to about the acid dew point temperature. Gas heat recovery equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980148612U JPS605280Y2 (en) | 1980-10-16 | 1980-10-16 | Combustion waste gas heat recovery equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980148612U JPS605280Y2 (en) | 1980-10-16 | 1980-10-16 | Combustion waste gas heat recovery equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5771999U JPS5771999U (en) | 1982-05-01 |
JPS605280Y2 true JPS605280Y2 (en) | 1985-02-18 |
Family
ID=29508038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1980148612U Expired JPS605280Y2 (en) | 1980-10-16 | 1980-10-16 | Combustion waste gas heat recovery equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS605280Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB720321A (en) * | 1953-05-18 | 1954-12-15 | Reginald Bishop | Improvements in or relating to power-assisted steering gear for vehicles |
-
1980
- 1980-10-16 JP JP1980148612U patent/JPS605280Y2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB720321A (en) * | 1953-05-18 | 1954-12-15 | Reginald Bishop | Improvements in or relating to power-assisted steering gear for vehicles |
Also Published As
Publication number | Publication date |
---|---|
JPS5771999U (en) | 1982-05-01 |
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