JPH01127813A - Supply water heater with air preheating mechanism - Google Patents
Supply water heater with air preheating mechanismInfo
- Publication number
- JPH01127813A JPH01127813A JP62287147A JP28714787A JPH01127813A JP H01127813 A JPH01127813 A JP H01127813A JP 62287147 A JP62287147 A JP 62287147A JP 28714787 A JP28714787 A JP 28714787A JP H01127813 A JPH01127813 A JP H01127813A
- Authority
- JP
- Japan
- Prior art keywords
- water heater
- air
- feed water
- air passage
- preheating mechanism
- 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
- 239000008400 supply water Substances 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はボイラーから排出される排ガスにより給水を加
熱する給水加熱器に関し、給水加熱器の外表面から発せ
られる熱で空気を予熱する空気予熱機構を有する給水加
熱器に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a feed water heater that heats feed water using exhaust gas discharged from a boiler, and an air preheating method that preheats air using heat emitted from the outer surface of the feed water heater. This invention relates to a feed water heater having a mechanism.
従来、ボイラー又はその他の燃焼炉から排出される排ガ
スはその温度が２００〜３００℃の高温であるため、省
エネルギー等の観点から煙道の途中に給水加熱器を設け
て排ガスの余熱を回収することにより、ボイラーに対す
る補給水温度を上昇させ、燃料費の節約をはかることは
衆知の事実である。Conventionally, the exhaust gas discharged from a boiler or other combustion furnace has a high temperature of 200 to 300 degrees Celsius, so from the perspective of energy conservation, a feed water heater is installed in the middle of the flue to recover the residual heat of the exhaust gas. It is a well-known fact that this increases the temperature of the make-up water to the boiler and saves fuel costs.
しかしながら上記構成の給水加熱器において、余熱回収
を行なったとしても、その外表面温度はまだ作業者に対
しては危険な高温の状態にある。However, in the feed water heater configured as described above, even if residual heat is recovered, the outer surface temperature is still at a high temperature that is dangerous to workers.
一般には給水加熱器本体外表面に断熱工事を施工し、そ
の危険な雰囲気状態を解消するようにしているが、その
作用効果は危険防止のみに留まっているのが現状である
。Generally, insulation work is performed on the outer surface of the feed water heater body to eliminate the dangerous atmosphere, but at present, its effect is limited to preventing danger.
本発明は上述の点に鑑みてなされたもので、給水加熱器
外表面と所定の間隙を有した大きさの空気通路を設け、
該空気通路でバーナー燃焼用空気の予熱を行ない、放散
熱の回収による省エネルギー化への寄与と給水加熱器本
体外表面の断熱工事を不用とする空気予熱機構を有する
給水加熱器を提供することを目的とする。The present invention has been made in view of the above points, and includes an air passage having a size having a predetermined gap with the outer surface of the feed water heater.
It is an object of the present invention to provide a feed water heater having an air preheating mechanism that preheats burner combustion air in the air passage, contributes to energy saving by recovering radiated heat, and eliminates the need for insulation work on the outer surface of the main body of the feed water heater. purpose.
上記問題点を解決するため本発明は、ボイラー又はその
他の燃焼炉の排ガス出口から煙突接続部迄の煙道途中に
取付けた給水加熱器において、給水加熱器外表面との間
に所定の間隙を有する空気予熱のための空気通路を設け
た。In order to solve the above problems, the present invention provides a feed water heater that is installed in the middle of the flue from the exhaust gas outlet of a boiler or other combustion furnace to the chimney connection, and provides a predetermined gap between the feed water heater and the outer surface of the feed water heater. Provided with air passages for air preheating.
空気予熱機構を有する給水加熱器を上記の如く構成する
ことにより、給水加熱器の外周囲部に設けた空気通路を
通る空気が給水加熱器の外表面から放散される熱により
加熱されるから、該予熱された空気をバーナー燃焼用空
気に利用することによりバーナー燃焼用空気の特別の予
熱器を必要とせずバーナー燃焼用空気の予熱ができると
共に、放散熱の回収による省エネルギー化ができ、更に
給水加熱器本体外表面の断熱工事を不用とする。By configuring the feed water heater having an air preheating mechanism as described above, the air passing through the air passage provided around the outer periphery of the feed water heater is heated by the heat dissipated from the outer surface of the feed water heater. By using the preheated air for burner combustion air, the burner combustion air can be preheated without the need for a special preheater for burner combustion air, and energy can be saved by recovering radiated heat. Eliminates the need for insulation work on the outer surface of the heater body.
以下、本発明の一実施例を図面に基づいて説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明に係る空気予熱機構を有する給水加熱器
の概略構成を示す図であり、第２図はその給水加熱器部
分を示す図である。FIG. 1 is a diagram showing a schematic configuration of a feed water heater having an air preheating mechanism according to the present invention, and FIG. 2 is a diagram showing a portion of the feed water heater.
図において、１はボイラー、２は給水加熱器、３は接続
煙道、４は煙突、５は空気予熱機構、６は可撓式ダクト
である。ボイラー１と給水加熱器２は接続煙道３で接続
きれ、給水加熱器２と煙突４は接続煙道３で接続される
。給水加熱器２の外周部には給水加熱器２の外表面との
間に所定の間隙を有する空気予熱のための空気通路７を
有する空気予熱機構５が設けられ、該空気通路７は可撓
式ダクト６でボイラーに接続されている。空気予熱機構
５の吸込口及び吐出口は給水加熱器２に応じて繍−一最
適な位置の組合わせとすることができる。更にファン９
を取付けた空気ダクト１０を吸込口に接続することによ
り、空気予熱機構５に対し押込式とすることも可能であ
る。In the figure, 1 is a boiler, 2 is a feed water heater, 3 is a connecting flue, 4 is a chimney, 5 is an air preheating mechanism, and 6 is a flexible duct. The boiler 1 and the feed water heater 2 are connected by a connecting flue 3, and the feed water heater 2 and the chimney 4 are connected by the connecting flue 3. An air preheating mechanism 5 having an air passage 7 for air preheating with a predetermined gap between the outer circumference of the feed water heater 2 and the outer surface of the feed water heater 2 is provided, and the air passage 7 is flexible. It is connected to the boiler by a type duct 6. The suction port and discharge port of the air preheating mechanism 5 can be set at optimal positions depending on the feed water heater 2. More fans 9
By connecting the air duct 10 to the suction port, the air preheating mechanism 5 can be pushed into the air preheating mechanism 5.
上記構成において、空気は給水加熱器２の下部より吸込
み、給水加熱器２の外周部に形成された空気通路７を経
て可撓式ダクト６を経てブロワ−８に流れる。また、必
要に応じて空気通路７に隔板（図示せず）を設けて、空
気通路を明確にする。In the above configuration, air is sucked in from the lower part of the feed water heater 2, passes through the air passage 7 formed on the outer periphery of the feed water heater 2, passes through the flexible duct 6, and flows to the blower 8. Further, if necessary, a partition plate (not shown) is provided in the air passage 7 to clarify the air passage.
上記空気予熱機構５の構造及び外観は給水加熱器２の形
状に応じて自由にすることができる。The structure and appearance of the air preheating mechanism 5 can be freely changed depending on the shape of the feed water heater 2.
従って現場組立のプレハブ式とすることも可能である。Therefore, it is also possible to use a prefabricated type that can be assembled on-site.
また、空気予熱機構５の内部壁には必要に応じて防音材
、断熱材１１の取り付けも可能である。また、既設の給
水加熱器に対してもその外周部に外表面から所定の間隙
を設けて空気通路を設ける等、設置方法、空気ダクトの
配管方法を青感することにより、本発明の空気予熱機構
を有する給水加熱器とすることが可能である。Furthermore, soundproofing material and heat insulating material 11 can be attached to the inner wall of the air preheating mechanism 5 as required. In addition, the air preheating of the present invention can be applied to existing water heaters by changing the installation method and air duct piping method, such as providing an air passage with a predetermined gap from the outer surface on the outer periphery of the existing water heater. It is possible to provide a feed water heater with a mechanism.
上記のような構成とすることにより、給水加熱器２の外
表面より放散熱をバーナー燃焼用空気の予熱用として回
収できるから、バーナーの燃焼性を改善することが可能
となる。With the above configuration, the heat radiated from the outer surface of the feed water heater 2 can be recovered for preheating the burner combustion air, so that the combustibility of the burner can be improved.
また、通常運転中のボイラー停止時のポストパージ中に
おける常温空気による炉内冷却度（ボイラー圧力低下度
）の減少がはかれる。また、同様に起動時のプレパージ
中においても生じる炉内冷却度の減少をはかることがで
きる。また、同様に給水加熱器２に滞留中のボイラー補
給水の温度低下が減少する。In addition, the degree of cooling in the furnace (boiler pressure drop degree) by room temperature air during post-purge when the boiler is stopped during normal operation is reduced. Furthermore, it is possible to similarly reduce the degree of cooling in the furnace that occurs during pre-purge at startup. Similarly, the temperature drop of the boiler make-up water remaining in the feed water heater 2 is reduced.
また、空気予熱機構５は、上記のような作用を有するこ
とから、常温空気の場合よりボイラー圧力が高く維持さ
れることになり、バーナー燃焼開始後の圧力復帰の時間
が短縮され、負荷に対する追従性が高くなる。In addition, since the air preheating mechanism 5 has the above-mentioned action, the boiler pressure is maintained higher than in the case of room temperature air, the time for pressure recovery after the start of burner combustion is shortened, and it is possible to follow the load. becomes more sexual.
以上説明したように本発明によれば、給水加熱器の外周
囲部に空気通路を有する空気予熱機構を設けるから、該
空気通路を通る空気は給水ｊｏ熱器の外表面から放散さ
れる熱により加熱きれ、該予熱された空気をバーナー燃
焼用空気に利用することによりバーナー燃焼用空気の特
別の予熱器を必要とせずバーナー燃焼用空気の予熱がで
きバーナーの燃焼性を向上させることができると共に、
放散熱の回収による省エネルギー化ができ、更に給水加
熱器本体外表面の断熱工事を不用とする等極めて優れた
効果が得られる。As explained above, according to the present invention, since the air preheating mechanism having the air passage is provided on the outer periphery of the feed water heater, the air passing through the air passage is heated by the heat dissipated from the outer surface of the water heater. By using the preheated air as the burner combustion air, the burner combustion air can be preheated without the need for a special preheater for the burner combustion air, and the combustibility of the burner can be improved. ,
Energy can be saved by recovering the radiated heat, and extremely excellent effects such as eliminating the need for insulation work on the outer surface of the feed water heater body can be obtained.
第１図は本発明に係る空気予熱機構を有する給水加熱器
の概略構成を示す図、第２１Ｅはその給水加熱器部分の
概略構成を示す図である。
図中、１・・・・ボイラー、２・・・・給水加熱器、３
・・・・接続−道、４・・・・煙突、５・・・・本装置
、６・・・・可撓式ダクト、７・・・・空気通路。FIG. 1 is a diagram showing a schematic configuration of a feed water heater having an air preheating mechanism according to the present invention, and FIG. 21E is a diagram showing a schematic configuration of the feed water heater portion. In the diagram, 1... boiler, 2... feed water heater, 3
...Connection-road, 4...Chimney, 5...This device, 6...Flexible duct, 7...Air passage.
Claims (1)
部迄の煙道途中に取付けた給水加熱器において、給水加
熱器外表面との間に所定の間隙を有する空気予熱のため
の空気通路を設けたことを特徴とする空気予熱機構を有
する給水加熱器。In a feedwater heater installed in the middle of the flue from the exhaust gas outlet of a boiler or other combustion furnace to the chimney connection, an air passage for air preheating is provided with a predetermined gap between the outside surface of the feedwater heater and the outside surface of the feedwater heater. A feed water heater having an air preheating mechanism characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62287147A JPH01127813A (en) | 1987-11-13 | 1987-11-13 | Supply water heater with air preheating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62287147A JPH01127813A (en) | 1987-11-13 | 1987-11-13 | Supply water heater with air preheating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01127813A true JPH01127813A (en) | 1989-05-19 |
Family
ID=17713681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62287147A Pending JPH01127813A (en) | 1987-11-13 | 1987-11-13 | Supply water heater with air preheating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01127813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015017777A (en) * | 2013-07-12 | 2015-01-29 | 三浦工業株式会社 | Boiler |
-
1987
- 1987-11-13 JP JP62287147A patent/JPH01127813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015017777A (en) * | 2013-07-12 | 2015-01-29 | 三浦工業株式会社 | Boiler |
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