JPH0428913A - Waste heat recovering device for incinerator - Google Patents
Waste heat recovering device for incineratorInfo
- Publication number
- JPH0428913A JPH0428913A JP13105190A JP13105190A JPH0428913A JP H0428913 A JPH0428913 A JP H0428913A JP 13105190 A JP13105190 A JP 13105190A JP 13105190 A JP13105190 A JP 13105190A JP H0428913 A JPH0428913 A JP H0428913A
- Authority
- JP
- Japan
- Prior art keywords
- waste heat
- boiler
- exhaust gas
- air preheater
- upstream
- 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
- 239000002918 waste heat Substances 0.000 title claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えば下水汚泥脱水ケーキの流動焼却炉などの
排ガスから熱回収を図るための焼却炉の廃熱回収装置に
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 recovery device for an incinerator for recovering heat from exhaust gas, such as a fluidized incinerator for dewatering sewage sludge cake.
（従来の技術）
焼却炉の高温の排ガスを空気予熱器に導いて熱交換し、
更に廃熱ボイラに導いて熱回収もしくは廃熱ボイラに導
いて熱回収し更に空気予熱器に導いて熱交換するように
した焼却炉の廃熱回収装置は従来から広く知られている
。(Conventional technology) High-temperature exhaust gas from the incinerator is guided to an air preheater for heat exchange.
Furthermore, waste heat recovery devices for incinerators have been widely known in which the waste heat is introduced into a waste heat boiler for heat recovery, or the waste heat is introduced into a waste heat boiler for heat recovery and further introduced into an air preheater for heat exchange.
ところが、比較的高温の予熱空気を得るために空気予熱
器を焼却踏出口直後に設置した場合、脱水ケーキの流動
焼却炉の排ガスは約８００℃の高温であり、特に消石灰
と塩化第二鉄を薬注した脱水ケーキを焼却した場合には
、空気予熱器のチューブに高温での灰付着が生し、また
排ガス中の塩化水素等の腐食性ガスの影響で異常腐食が
発生するという問題があった。However, when an air preheater is installed immediately after the incineration exit to obtain relatively high-temperature preheated air, the exhaust gas from the fluidized incinerator for dehydrated cake is as high as about 800°C, and especially when slaked lime and ferric chloride are When the dehydrated cake containing chemicals is incinerated, there are problems such as ash adhesion at high temperatures on the tube of the air preheater, and abnormal corrosion due to the influence of corrosive gases such as hydrogen chloride in the exhaust gas. Ta.
（発明が解決しようとする課Ｂ）
本発明は上記した従来の問題点を解消して、消石灰と塩
化第二鉄を薬注した脱水ケーキのような焼却排ガスの条
件の悪い焼却物を焼却した場合にも、空気予熱器のチュ
ーブに灰付着や異常腐食を生ずることなく熱回収を図る
ことができる焼却炉の廃熱回収装置を提供するために完
成されたものである。(Question B to be solved by the invention) The present invention solves the above-mentioned conventional problems and incinerates incinerated materials with poor incineration exhaust gas conditions, such as dehydrated cakes injected with slaked lime and ferric chloride. The invention was completed in order to provide a waste heat recovery device for an incinerator that can recover heat without causing ash adhesion or abnormal corrosion to the tubes of the air preheater.
（ＩＩ！Ｉを解決するための手段）
上記の課題を解決するために完成された本発明は、焼却
炉の排ガスを空気予熱器及び廃熱ボイラに導いて熱回収
する廃熱回収装置において、廃熱ボイラを空気予熱器の
前後に設け、後段の廃熱ボイラは自然循環式とし、前段
の廃熱ボイラは後段の廃熱ボイラの缶水をポンプにより
強制循環させる形式としたことを特徴とするものである
。(Means for Solving II!I) The present invention, which was completed to solve the above problems, is a waste heat recovery device that guides the exhaust gas of an incinerator to an air preheater and a waste heat boiler to recover heat. A waste heat boiler is installed before and after the air preheater, the latter stage waste heat boiler is a natural circulation type, and the former stage waste heat boiler is characterized by a type in which canned water from the latter stage waste heat boiler is forcedly circulated by a pump. It is something to do.
（実施例）
以下に本発明を図示の実施例とともに更に詳細に説明す
る。(Examples) The present invention will be described in more detail below with reference to illustrated examples.
図中、（１）は流動焼却炉のような高温の排ガスを生ず
る焼却炉、（２）はその排ガスとブロア（３）により焼
却炉（１）へ吹き込まれる空気との間で熱交換を行うた
めの空気予熱器である。In the figure, (1) is an incinerator that produces high-temperature exhaust gas, such as a fluidized fluid incinerator, and (2) is an incinerator that exchanges heat between the exhaust gas and air blown into the incinerator (1) by a blower (3). It is an air preheater for.
本発明においてはこの空気予熱器（２）の前後に、前段
の廃熱ボイラ（４）と、後段の廃熱ボイラ（５）とが分
割して設けられている。後段の廃熱ボイラ（５）はドラ
ム（６）内の缶水を水管（７）を通じて自然循環させる
形式のものである。これに対して前段の廃熱ボイラ（４
）はそれ自体にはドラムを持たず、後段の廃熱ボイラ（
５）の缶水をポンプ（８）により水管（９）に強制的に
流して強制循環させる形式のものとされている。なお、
ＧＯは後段の廃熱ボイラ（５）により熱回収された排ガ
スを浄化するための排煙処理設備である。In the present invention, a front-stage waste heat boiler (4) and a rear-stage waste heat boiler (5) are separately provided before and after the air preheater (2). The downstream waste heat boiler (5) is of a type in which canned water in the drum (6) is naturally circulated through the water pipe (7). In contrast, the previous stage waste heat boiler (4
) does not have its own drum, but uses a downstream waste heat boiler (
5) The canned water is forced to flow through a water pipe (9) by a pump (8) for forced circulation. In addition,
GO is a flue gas treatment facility for purifying the flue gas whose heat has been recovered by the downstream waste heat boiler (5).
（作用）
このように構成された本発明の焼却炉の廃熱回収装置は
、焼却炉（１）から排出される高温の排ガスをまず前段
の廃熱ボイラ（４）に通して熱回収を行わせる。この前
段の廃熱ボイラ（４）は水管（９）の内部に缶水を強制
循環させる形式のものであるため、水管（９）の表面温
度は排ガスの温度が約８００”Ｃである場合にも２００
℃程度に保たれる。従って焼却物が消石灰と塩化第二鉄
を薬注した脱水ケーキである場合にも、廃熱ボイラ（４
）の水管（９）は排ガス中の塩化水素等の影響による異
常腐食を生ずるおそれはない。(Function) The incinerator waste heat recovery device of the present invention configured as described above first passes the high-temperature exhaust gas discharged from the incinerator (1) through the preceding waste heat boiler (4) to recover heat. let Since the waste heat boiler (4) in the previous stage is of a type that forcedly circulates canned water inside the water pipe (9), the surface temperature of the water pipe (9) is approximately 800"C when the exhaust gas temperature is approximately 800"C. Also 200
It is maintained at around ℃. Therefore, even if the incinerated material is a dehydrated cake containing slaked lime and ferric chloride, the waste heat boiler (4
) There is no risk of abnormal corrosion occurring in the water pipe (9) due to the effects of hydrogen chloride, etc. in the exhaust gas.
このようにして前段の廃熱ボイラ（４）を通過した排ガ
スの温度は６００°Ｃ程度まで下がり、次に空気予熱器
（２）による熱回収が行われる。このときには排ガスの
温度が低いために、空気予熱器（２）のチューブにも従
来のような灰付着や塩化水素等による異常腐食は生じな
い。In this way, the temperature of the exhaust gas that has passed through the waste heat boiler (4) in the previous stage is lowered to about 600°C, and then heat is recovered by the air preheater (2). At this time, since the temperature of the exhaust gas is low, the tubes of the air preheater (2) do not suffer from ash adhesion or abnormal corrosion due to hydrogen chloride, etc., as in the past.
そして排ガスは更に後段の廃熱ボイラ（５）に通されて
完全に熱回収され、その後に排煙処理設備０［Ｄにより
浄化されて大気中へ放出される。The exhaust gas is further passed through a downstream waste heat boiler (5) for complete heat recovery, and then purified by the exhaust gas treatment equipment 0 [D] and released into the atmosphere.
（発明の効果）
本発明の焼却炉の廃熱回収装置は以上のように構成され
たものであるため、消石灰と塩化第二鉄を薬注した脱水
ケーキのような焼却物を焼却した場合であっても、空気
予熱器のチューブ等に灰付着や塩化水素等のような腐食
性ガスによる異常腐食を生ずることなく、完全な熱回収
を図ることができる。(Effects of the Invention) Since the waste heat recovery device for an incinerator of the present invention is configured as described above, it is possible to incinerate a waste such as a dehydrated cake in which slaked lime and ferric chloride are injected. Even if there is, complete heat recovery can be achieved without causing ash adhesion to the tubes of the air preheater or abnormal corrosion due to corrosive gases such as hydrogen chloride.
また本発明においては、後段の廃熱ボイラを自然循環式
とし、前段の廃熱ボイラを後段の廃熱ボイラの缶水を強
制循環させる形式としたので、独立した２基のボイラを
設置する場合に比較して設備コストを大幅に引き下げる
ことができるうえ、高温の排ガスと接する前段の廃熱ボ
イラを強制循環式としてその木管の表面温度を低下させ
、一方低温となった排ガスと接する後段の廃熱ボイラは
自然循環式としてイニシャルコストの低減を図ることが
できる。In addition, in the present invention, the latter stage waste heat boiler is of a natural circulation type, and the former stage waste heat boiler is of a type in which canned water from the latter stage waste heat boiler is forcedly circulated, so when two independent boilers are installed. In addition, the equipment cost can be significantly reduced compared to the previous stage waste heat boiler, which is in contact with high-temperature exhaust gas, and the surface temperature of the wood pipe is lowered by using a forced circulation system. The heat boiler is a natural circulation type, which can reduce the initial cost.
なお本発明の焼却炉の廃熱回収装置は流動焼却炉のみな
らず、その他一般の焼却炉の廃熱回収にも通用できるこ
とはいうまでもないことである。It goes without saying that the incinerator waste heat recovery device of the present invention can be used not only for fluidized bed incinerators but also for waste heat recovery from other general incinerators.
よって本発明は従来の問題点を解消したものとして、産
業の発展に寄与するところは極めて大きいものがある。Therefore, the present invention can greatly contribute to the development of industry by solving the problems of the conventional technology.
【図面の簡単な説明】
図面は本発明の詳細な説明する配管系統図である。
（１）：焼却炉、（２）：空気予熱器、（４）：前段の
廃熱ボイラ、（５）：後段の廃熱ボイラ、（８）：ポン
プ。BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a piping system diagram for explaining the present invention in detail. (1): Incinerator, (2): Air preheater, (4): Previous stage waste heat boiler, (5): Later stage waste heat boiler, (8): Pump.
Claims (1)
いて熱回収する廃熱回収装置において、廃熱ボイラを空
気予熱器（２）の前後に設け、後段の廃熱ボイラ（５）
は自然循環式とし、前段の廃熱ボイラ（４）は後段の廃
熱ボイラ（５）の缶水をポンプ（８）により強制循環さ
せる形式としたことを特徴とする焼却炉の廃熱回収装置
。In a waste heat recovery device that guides the exhaust gas of an incinerator (1) to an air preheater and a waste heat boiler to recover heat, the waste heat boiler is provided before and after the air preheater (2), and the waste heat boiler (5) in the latter stage is installed.
is a natural circulation type, and the waste heat boiler (4) at the front stage is of a type in which canned water from the waste heat boiler (5) at the rear stage is forcedly circulated by a pump (8). .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13105190A JPH0428913A (en) | 1990-05-21 | 1990-05-21 | Waste heat recovering device for incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13105190A JPH0428913A (en) | 1990-05-21 | 1990-05-21 | Waste heat recovering device for incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0428913A true JPH0428913A (en) | 1992-01-31 |
Family
ID=15048866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13105190A Pending JPH0428913A (en) | 1990-05-21 | 1990-05-21 | Waste heat recovering device for incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428913A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178249A (en) * | 1994-12-27 | 1996-07-12 | Netsukoo:Kk | Drying incinerator for golf links |
| CN103225810A (en) * | 2012-01-31 | 2013-07-31 | 月岛机械株式会社 | A pressurized fluidized furnace |
| CN104180674A (en) * | 2014-08-18 | 2014-12-03 | 营口东吉科技（集团）有限公司 | Full-automatic lump waste heat recovery equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931045U (en) * | 1972-06-21 | 1974-03-18 | ||
| JPS56128921A (en) * | 1980-03-14 | 1981-10-08 | Dainippon Printing Co Ltd | Manufacture of electrode substrate for liquid-crystal display element |
-
1990
- 1990-05-21 JP JP13105190A patent/JPH0428913A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931045U (en) * | 1972-06-21 | 1974-03-18 | ||
| JPS56128921A (en) * | 1980-03-14 | 1981-10-08 | Dainippon Printing Co Ltd | Manufacture of electrode substrate for liquid-crystal display element |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178249A (en) * | 1994-12-27 | 1996-07-12 | Netsukoo:Kk | Drying incinerator for golf links |
| CN103225810A (en) * | 2012-01-31 | 2013-07-31 | 月岛机械株式会社 | A pressurized fluidized furnace |
| JP2013155974A (en) * | 2012-01-31 | 2013-08-15 | Tsukishima Kikai Co Ltd | Pressure fluidized furnace system |
| CN103225810B (en) * | 2012-01-31 | 2017-05-24 | 月岛机械株式会社 | A pressurized fluidized furnace |
| CN104180674A (en) * | 2014-08-18 | 2014-12-03 | 营口东吉科技（集团）有限公司 | Full-automatic lump waste heat recovery equipment |
| CN104180674B (en) * | 2014-08-18 | 2015-12-30 | 营口东吉科技（集团）有限公司 | One automatically sticks together body waste heat recovery apparatus |
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