JPS645212B2 - - Google Patents
Info
- Publication number
- JPS645212B2 JPS645212B2 JP56043114A JP4311481A JPS645212B2 JP S645212 B2 JPS645212 B2 JP S645212B2 JP 56043114 A JP56043114 A JP 56043114A JP 4311481 A JP4311481 A JP 4311481A JP S645212 B2 JPS645212 B2 JP S645212B2
- Authority
- JP
- Japan
- Prior art keywords
- gas treatment
- induced draft
- flue gas
- ducts
- treatment device
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Description
【発明の詳細な説明】
本発明は排煙処理装置に関し、さらに詳しく
は、低負荷運転時に通風機のエネルギーを節約す
ることができる排煙処理装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flue gas treatment device, and more particularly to a flue gas treatment device that can save energy of a ventilator during low load operation.
従来のボイラ等の燃焼ガスを処理する排煙処理
装置の系統図を第１図に示す。一般にこの種の煙
風道系統は２系列からなり、通常運転時は常に２
台の誘引通風機８，９を用いて運転される。ボイ
ラ１から二系列の煙道へ導かれたガスは、それぞ
れ脱硝反応器２，３で脱硝され、さらに空気予熱
器４，５で熱回収された後、誘引通風機８，９で
吸引昇圧された後、後流側へと導かれる。一方、
燃焼に使用する空気は、押込通風機６，７により
供給され、空気予熱器４，５で昇温されてボイラ
１へ導かれる。 FIG. 1 shows a system diagram of a conventional flue gas treatment device for treating combustion gas from a boiler or the like. Generally, this type of smoke duct system consists of two series, and during normal operation, there are always two series.
It is operated using two induced draft fans 8 and 9. The gas led from the boiler 1 to the two flues is denitrified in denitrification reactors 2 and 3, and further heat is recovered in air preheaters 4 and 5, and then sucked and pressurized by induced draft fans 8 and 9. After that, it is guided to the slipstream side. on the other hand,
Air used for combustion is supplied by forced drafters 6 and 7, heated by air preheaters 4 and 5, and guided to boiler 1.
上記排煙処理装置において、ダクトを通る風量
を決定する通風機８，９は最大負荷時をベースに
設計され、低負荷時はダンパ１９〜２２を絞つて
ドラフトおよび風量を調整している。すなわち、
例えば約1/2負荷時以下の低負荷時にはドラフト、
風量とも約1/2以下となるが、通風機は高負荷時
とほぼ同じ動力を消費するため非常に不経済であ
る。 In the above-mentioned exhaust gas treatment device, the ventilators 8 and 9, which determine the amount of air passing through the duct, are designed based on the maximum load, and when the load is low, the dampers 19 to 22 are throttled to adjust the draft and air amount. That is,
For example, when the load is low (approximately 1/2 load or less), there is a draft.
Although the air volume is about 1/2 or less, the ventilation fan consumes almost the same amount of power as when under high load, making it extremely uneconomical.
本発明の目的は、上記した従来技術の欠点をな
くし、低負荷運転時にエネルギーの節約が可能と
なる排煙処理装置を提供することにある。 An object of the present invention is to provide a flue gas treatment device that eliminates the drawbacks of the prior art described above and allows energy savings during low-load operation.
本発明は、複数の煙風道系統にそれぞれ誘引通
風機を設置した排煙処理装置において、燃焼装置
から誘引通風機に到る複数のダクトを連絡ダクト
で連結し、低負荷時に一方の誘引通風機のみで排
煙処理装置を運転可能にしたものである。 The present invention provides a flue gas treatment system in which induced draft fans are installed in each of a plurality of smoke duct systems, in which a plurality of ducts from a combustion device to an induced draft fan are connected by a connecting duct, and when the load is low, one of the induced draft This makes it possible to operate the flue gas treatment equipment using only the machine.
以下、本発明を図面によりさらに詳細に説明す
る。 Hereinafter, the present invention will be explained in more detail with reference to the drawings.
第２図および第３図は、それぞれ本発明の実施
例を示す排煙処理装置の系統図である。 FIGS. 2 and 3 are system diagrams of flue gas treatment apparatuses showing embodiments of the present invention, respectively.
第２図において、第１図の従来装置と異なる点
は、ボイラ１から誘引通風機８または９に到る二
系列のダクトを連絡ダクト２３Ａおよび／または
２３Ｂで連結したことである。上記構成におい
て、低負荷運転時には、ダンパ２１または２２を
全開とし、連絡ダクトのいずれかのダンパ２４Ａ
または２４Ｂを全開とすることにより、空気予熱
器４，５または脱硝反応器２，３を通過した燃焼
排ガスは、連絡ダクト２３Ａまたは２３Ｂにより
一方に統合されて後流側へ導かれる。 2, the difference from the conventional device shown in FIG. 1 is that two series of ducts from the boiler 1 to the induced draft fan 8 or 9 are connected by a communication duct 23A and/or 23B. In the above configuration, during low load operation, damper 21 or 22 is fully opened, and either damper 24A of the communication duct is opened.
Alternatively, by fully opening 24B, the combustion exhaust gas that has passed through the air preheaters 4 and 5 or the denitrification reactors 2 and 3 is integrated into one side by the communication duct 23A or 23B and guided to the downstream side.
上記実施例によれば、誘引通風機８，９のいず
れか一方を停止してシステムの運転を行うため、
誘引通風機一台分の動力費を節約することがで
き、極めて経済的である。 According to the above embodiment, in order to operate the system by stopping either one of the induced draft fans 8 and 9,
The power cost for one induced draft fan can be saved, making it extremely economical.
次に第３図は、誘引通風機８，９を集塵器１
０，１１の出口側に設置した場合であるが、この
場合も第２図と同様な効果を得ることができる。
なお、連絡ダクト２３Ａ，２３Ｂは、いずれか一
方のみとしてもよいことは勿論である。 Next, in Figure 3, the induced draft fans 8 and 9 are connected to the dust collector 1.
0 and 11, the same effect as in FIG. 2 can be obtained in this case as well.
Note that it goes without saying that only one of the communication ducts 23A and 23B may be provided.
以上、本発明によれば、低負荷運転時において
誘引通風機の運転台数を減少させることができる
ため、運転経費が大幅に節約され、非常に経済的
な排煙処理システムとすることができる。 As described above, according to the present invention, the number of induced draft fans in operation can be reduced during low-load operation, so operating costs can be significantly reduced, and a very economical flue gas treatment system can be achieved.
第１図は、従来の排煙処理装置の系統図、第２
図および第３図は、それぞれ本発明の実施例を示
す排煙処理装置の系統図である。
１……ボイラ、２，３……脱硝反応器、６，７
……押込通風機、８，９……誘引通風機、１２…
…煙突、２１，２２……ダンパ、２３Ａ，２３Ｂ
……連絡ダクト、２４Ａ，２４Ｂ……連絡ダン
パ。
Figure 1 is a system diagram of a conventional flue gas treatment device;
3 and 3 are system diagrams of a flue gas treatment device showing an embodiment of the present invention, respectively. 1... Boiler, 2, 3... Denitrification reactor, 6, 7
...Forced draft fan, 8, 9...Induced draft fan, 12...
...Chimney, 21, 22...Damper, 23A, 23B
...Communication duct, 24A, 24B...Communication damper.
Claims (1)
いる複数のダクトにそれぞれ誘引通風機を介して
燃焼装置からの排ガスを通過させる排煙処理装置
において、燃焼装置から誘引通風機に到る複数の
ダクト間に連絡ダクトを設けたことを特徴とする
排煙処理装置。1. In an exhaust gas treatment device in which exhaust gas from a combustion device passes through a plurality of ducts in which exhaust gas treatment devices are installed in multiple rows in parallel, each of which passes through an induced draft fan, a plurality of ducts from the combustion device to the induced draft fan A flue gas treatment device characterized by providing a communication duct between the ducts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56043114A JPS57157929A (en) | 1981-03-26 | 1981-03-26 | Exhaust gas treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56043114A JPS57157929A (en) | 1981-03-26 | 1981-03-26 | Exhaust gas treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57157929A JPS57157929A (en) | 1982-09-29 |
| JPS645212B2 true JPS645212B2 (en) | 1989-01-30 |
Family
ID=12654798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56043114A Granted JPS57157929A (en) | 1981-03-26 | 1981-03-26 | Exhaust gas treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57157929A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324639A (en) * | 1976-08-19 | 1978-03-07 | Mitsubishi Heavy Ind Ltd | Boiler plant |
| JPS5542112U (en) * | 1978-09-12 | 1980-03-18 |
-
1981
- 1981-03-26 JP JP56043114A patent/JPS57157929A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57157929A (en) | 1982-09-29 |
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