JPH0223956Y2 - - Google Patents
Info
- Publication number
- JPH0223956Y2 JPH0223956Y2 JP13784785U JP13784785U JPH0223956Y2 JP H0223956 Y2 JPH0223956 Y2 JP H0223956Y2 JP 13784785 U JP13784785 U JP 13784785U JP 13784785 U JP13784785 U JP 13784785U JP H0223956 Y2 JPH0223956 Y2 JP H0223956Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- cooling chamber
- gas cooling
- gas
- water
- 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
- 238000001816 cooling Methods 0.000 claims description 122
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 64
- 238000002347 injection Methods 0.000 claims description 48
- 239000007924 injection Substances 0.000 claims description 48
- 239000002699 waste material Substances 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 108
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Landscapes
- Incineration Of Waste (AREA)
Description
【考案の詳細な説明】
(イ) 考案の技術分野
本考案は、高温状態にあるごみ焼却炉のガス冷
却室を冷却するごみ焼却炉の排ガス冷却制御装置
に関する。[Detailed description of the invention] (a) Technical field of the invention The present invention relates to an exhaust gas cooling control device for a waste incinerator that cools the gas cooling chamber of the waste incinerator which is in a high temperature state.
(ロ) 技術の背景
一般に燃焼ガス中の煤塵を除去するため、炉出
口と煙突との間に集塵装置が設置されている。こ
の場合、排ガスが集塵装置中を通過する時、集塵
装置の耐熱許容温度より低く排ガス温度を制御す
る必要がある。このため、炉出口と集塵装置との
間にはガス冷却室が設けられ、排ガス冷却制御装
置によつてガス冷却室中の排ガスが所定の温度に
制御されている（（社）全国都市清掃会議発行の
「廃棄物処理施設構造指針解説」参照）。(b) Technical background Generally, a dust collector is installed between the furnace outlet and the chimney to remove soot from the combustion gas. In this case, when the exhaust gas passes through the dust collector, it is necessary to control the temperature of the exhaust gas to be lower than the allowable heat resistance temperature of the dust collector. For this reason, a gas cooling chamber is installed between the furnace outlet and the dust collector, and the exhaust gas in the gas cooling chamber is controlled to a predetermined temperature by the exhaust gas cooling control device. (See “Explanation of Structural Guidelines for Waste Treatment Facilities” published by the conference).
(ハ) 従来技術と問題点
従来に於ける排ガス冷却制御装置を第５図によ
つて説明する。(c) Prior art and problems A conventional exhaust gas cooling control device will be explained with reference to FIG.
図示の如く、従来に於けるごみ焼却炉の排ガス
冷却制御装置ａは、焼却炉ｂと、焼却炉ｂの直上
にあつて焼却炉ｂに一体に形成されたガス冷却室
ｃと、ガス冷却室ｃの壁面c1に設けられた水噴射
ノズルｄと、水噴射ノズルｄに噴射水を圧送する
ポンプｅと、ガス冷却室ｃの出口c2の温度を検出
する第１温度センサｆと、第１温度センサｆから
検出された温度信号を受けてガス冷却室ｃの出口
c2の温度が一定値（約300℃）となるようにポン
プｅからの噴射水の水量を制御するガス冷却室出
口ガス温度制御装置ｇと、焼却炉ｂの壁面に設け
られた炉温制御用空気ノズルｈと、炉温制御用空
気ノズルｈに空気を送風するフアンｉと、焼却炉
ｂの温度を検出する第２温度センサｊと、第２温
度センサｊから検出された温度信号を受けて焼却
炉ｂの温度が高温状態（約900℃）とならないよ
うにフアンｉからの空気量を制御する炉出口ガス
温度制御装置ｋとから構成されている。 As shown in the figure, a conventional waste incinerator exhaust gas cooling control device a includes an incinerator b, a gas cooling chamber c that is directly above the incinerator b and is integrally formed with the incinerator b, and a gas cooling chamber a water injection nozzle d provided on the wall surface c 1 of the gas cooling chamber c; a pump e that pumps water to the water injection nozzle d; a first temperature sensor f that detects the temperature of the outlet c 2 of the gas cooling chamber c; 1 The outlet of the gas cooling chamber c receives the temperature signal detected from the temperature sensor f.
A gas temperature control device g at the outlet of the gas cooling chamber that controls the amount of water injected from the pump e so that the temperature of c 2 remains at a constant value (approximately 300°C), and a furnace temperature control device installed on the wall of the incinerator b. a fan i that blows air to the air nozzle h for furnace temperature control, a second temperature sensor j that detects the temperature of the incinerator b, and a temperature signal detected from the second temperature sensor j. and a furnace outlet gas temperature control device k that controls the amount of air from the fan i so that the temperature of the incinerator b does not reach a high temperature (approximately 900° C.).
しかしながら、水噴射ノズルｄからの水噴射の
みによりガス冷却室ｃ内のガス温度を所定の目標
温度まで下げといる従来の装置にあつては、ごみ
焼却炉に特有の「ごみがれ時」や「停止時」など
の負荷の急激な低下に際して、次の不具合があ
る。即ち、このような状況の時には水噴射ノズル
ｄからガス冷却室ｃに噴射される噴射水の流量は
ガス冷却室ｃ内の温度に追従せず、従つて、必要
以上の噴射水がガス冷却室ｃ内に噴射される。こ
の結果、噴射水滴が完全に蒸発せずにガス冷却室
ｃの壁面を濡らし、さらに極端な場合には余剰水
として、下部から流出することがある。ガス冷却
室ｃの壁面が濡れると、高温度の炉体耐火物はス
ポークリングを起こして損傷するという問題があ
る。 However, in the case of a conventional device that lowers the gas temperature in the gas cooling chamber c to a predetermined target temperature only by water injection from the water injection nozzle d, The following problems occur when the load suddenly decreases, such as when stopping. That is, in such a situation, the flow rate of the injection water injected from the water injection nozzle d into the gas cooling chamber c does not follow the temperature inside the gas cooling chamber c, and therefore, more injection water than necessary flows into the gas cooling chamber c. It is injected into c. As a result, the jetted water droplets do not completely evaporate and wet the wall surface of the gas cooling chamber c, and in more extreme cases, they may flow out from the lower part as surplus water. If the wall surface of the gas cooling chamber c gets wet, there is a problem in that the high-temperature furnace refractory will cause spoke rings and be damaged.
加えて、余剰水が水噴射ノズルｄに付着した
り、噴射水が冷却室ｃの壁面の温度に追従した状
態で水噴射ノズルｄに供給されないため水噴射ノ
ズルｄが過熱され、排ガス中のHCl，SOxなどの
腐食性の強いガスによつて高温腐食を引き起こす
という問題がある。 In addition, excess water may adhere to the water injection nozzle d, or the water injection nozzle d may not be supplied to the water injection nozzle d while following the temperature of the wall surface of the cooling chamber c, resulting in overheating of the water injection nozzle d, causing HCl in the exhaust gas to There is a problem in that highly corrosive gases such as SOx cause high temperature corrosion.
又、ガス冷却室ｃが炉と別置の場合には、ガス
冷却室下部のダスト搬出装置（図示せず）が余剰
水により腐食を起こすという問題がある。 Further, if the gas cooling chamber c is located separately from the furnace, there is a problem that the dust removal device (not shown) at the bottom of the gas cooling chamber is corroded by excess water.
(ニ) 考案の目的
本考案は、上記の問題を解決するためになされ
たもので、その目的は、噴射水によつて冷却され
るガス冷却室に余剰水を出さず、且つ、水噴射ノ
ズルを保護する焼却炉の排ガス冷却制御装置を提
供することにある。(d) Purpose of the invention The present invention was made to solve the above problems, and its purpose is to prevent excess water from flowing into the gas cooling chamber that is cooled by jet water, and to eliminate water jet nozzles. An object of the present invention is to provide an exhaust gas cooling control device for an incinerator that protects.
(ホ) 考案の構成
上記目的を達成するために、本考案は、焼却炉
と、ガス冷却室と、ガス冷却室の壁面に設けられ
た水噴射ノズルと、水噴射ノズルに噴射水を圧送
するポンプと、ガス冷却室出口の温度を検出する
温度センサと、温度センサから検出された温度信
号を受けてガス冷却室出口の温度が所定の値とな
るようにポンプからの噴射水の流量を制御するガ
ス冷却室出口ガス温度制御装置とを備えたごみ焼
却炉の排ガス冷却制御装置に於て、ガス冷却室の
壁面に水噴射ノズルを囲んで空気噴射口を設け、
この空気噴射口に空気を送風するフアンを配し、
ガス冷却室出口ガス温度制御装置の指令により、
所定の温度付近より高い時にポンプから水噴射ノ
ズルに噴射水を圧送し、所定の温度付近より低い
時にはフアンから空気噴射口に冷却空気を送風す
るように構成したものである。(E) Structure of the device In order to achieve the above object, the present invention includes an incinerator, a gas cooling chamber, a water injection nozzle provided on the wall of the gas cooling chamber, and a method of force-feeding water to the water injection nozzle. The pump, a temperature sensor that detects the temperature at the outlet of the gas cooling chamber, and a temperature signal detected from the temperature sensor to control the flow rate of water injected from the pump so that the temperature at the outlet of the gas cooling chamber reaches a predetermined value. In the exhaust gas cooling control device for a waste incinerator equipped with a gas cooling chamber outlet gas temperature control device, an air injection port is provided on the wall surface of the gas cooling chamber surrounding a water injection nozzle,
A fan that blows air is placed in this air injection port,
According to the command of the gas cooling chamber outlet gas temperature control device,
When the temperature is higher than around a predetermined temperature, the pump pumps water to be jetted to the water injection nozzle, and when the temperature is lower than around the predetermined temperature, cooling air is sent from the fan to the air jet nozzle.
(ヘ) 考案の作用
上記の如き構成に係る本考案によれば、ガス冷
却室出口ガス温度が所定の温度付近以上の時には
ガス冷却室は水噴射ノズルから噴射された噴射水
によつて冷却される。(f) Effect of the device According to the present invention having the above-described configuration, when the gas temperature at the outlet of the gas cooling chamber is around a predetermined temperature or higher, the gas cooling chamber is cooled by the water jetted from the water jet nozzle. Ru.
一方、ガス冷却室出口ガス温度が所定の温度付
近より低い時には、ガス冷却室は冷却空気によつ
て冷却され、水噴射ノズルは空気噴射口を通過す
る冷却空気によつて冷却される。又、この時に
は、蓄積されたガス冷却室の壁面を冷却空気によ
つて冷却して冷却効率を落とすことによつて水噴
射の場合に比べて著しく冷却時間を長くすること
ができる。 On the other hand, when the gas temperature at the outlet of the gas cooling chamber is lower than around a predetermined temperature, the gas cooling chamber is cooled by the cooling air, and the water injection nozzle is cooled by the cooling air passing through the air injection port. In addition, at this time, the cooling time can be significantly increased compared to the case of water injection by cooling the wall surface of the cooling chamber with accumulated gas and reducing the cooling efficiency.
(ト) 考案の実施例
以下、図面により本考案の実施例を詳細に説明
する。(G) Embodiments of the invention Examples of the invention will be described below in detail with reference to the drawings.
第１図は本実施例に係るごみ焼却炉の排ガス冷
却制御装置を示す。 FIG. 1 shows an exhaust gas cooling control device for a waste incinerator according to this embodiment.
図示の如く、ごみ焼却炉の排ガス冷却制御装置
１は、焼却炉２と、焼却炉２の直上にあつて焼却
炉２に一体に形成された耐火キヤスタブル製のガ
ス冷却室３と、ガス冷却室３の壁面３ａに設けら
れた水噴射ノズル４と、水噴射ノズル４に噴射水
を圧送するポンプ５と、ガス冷却室３の出口３ｂ
の温度を検出する第１温度センサ６と、第１温度
センサ６から検出された温度信号を受けてガス冷
却室３の出口３ｂの温度が一定値（約300℃）と
なるようにポンプ５からの噴射水の流量を制御す
る第１ガス冷却室出口温度制御装置７と、焼却炉
２の壁面２ａに設けられた炉温制御用空気ノズル
８と、炉温制御用空気ノズル８に冷却空気を送風
するフアン９と、送風フアン９と炉温制御用空気
ノズル８との間に設けられた炉用ダンパ１０と、
焼却炉２の温度を検出する第２温度センサ１１
と、第２温度センサ１１から検出された温度信号
を受けて焼却炉２の温度が高温（約900℃）とな
らないようにフアン９からの空気量を制御する炉
出口ガス温度制御装置１２と、水噴射ノズル４を
囲んでガス冷却室３の壁面３ａに配設された空気
噴射口１３（第２図に詳細を図示）と、空気噴射
口１３とフアン９の間に設けられた冷却室用ダン
パ１４と、第１温度センサ６から検出された温度
信号を受けて炉用ダンパ１０、冷却用ダンパ１
４、フアン９を制御する第２ガス冷却室出口温度
制御装置１５とから構成されている。１６は噴射
水の水量調整弁、１７はフアンを運転するモータ
である。 As shown in the figure, the exhaust gas cooling control device 1 for a waste incinerator includes an incinerator 2, a gas cooling chamber 3 made of a refractory castable that is directly above the incinerator 2 and integrally formed with the incinerator 2, and a gas cooling chamber. 3, a water injection nozzle 4 provided on the wall surface 3a of the gas cooling chamber 3, a pump 5 that pumps water to the water injection nozzle 4, and an outlet 3b of the gas cooling chamber 3.
A first temperature sensor 6 detects the temperature of Cooling air is supplied to the first gas cooling chamber outlet temperature control device 7 that controls the flow rate of the injection water, the furnace temperature control air nozzle 8 provided on the wall surface 2a of the incinerator 2, and the furnace temperature control air nozzle 8. A blowing fan 9; a furnace damper 10 provided between the blowing fan 9 and the furnace temperature control air nozzle 8;
A second temperature sensor 11 that detects the temperature of the incinerator 2
and a furnace outlet gas temperature control device 12 that receives the temperature signal detected from the second temperature sensor 11 and controls the amount of air from the fan 9 so that the temperature of the incinerator 2 does not become high (approximately 900° C.). An air injection port 13 (details shown in FIG. 2) provided on the wall surface 3a of the gas cooling chamber 3 surrounding the water injection nozzle 4, and a cooling chamber provided between the air injection port 13 and the fan 9. In response to the temperature signal detected from the damper 14 and the first temperature sensor 6, the furnace damper 10 and the cooling damper 1
4. A second gas cooling chamber outlet temperature control device 15 that controls the fan 9. Reference numeral 16 indicates a water volume adjustment valve for injection water, and reference numeral 17 indicates a motor for driving the fan.
次に、本実施例の作用を第３図、第４図に従つ
て説明する。 Next, the operation of this embodiment will be explained with reference to FIGS. 3 and 4.
焼却炉２の運転開始後、ガス冷却室出口ガス温
度Tg1が250℃以下の場合には、冷却室用ダンパ
１４は開状態で炉用ダンパ１０と閉状態となつて
いる（ステツプS1）。焼却炉２内のごみの燃焼負
荷の上昇に伴つてガス冷却室出口ガス温度Tg1が
250℃以上になると（ステツプS2）、第２ガス冷
却室出口温度制御装置１５の起動命令によつて、
フアン９が起動し（ステツプ３）、空気噴射口１
３に冷却用ダンパ１４を介して冷却空気が送られ
る。燃焼負荷の上昇に伴つてガス冷却室出口ガス
温度Tg1は上昇し、冷却空気量が適切に制御され
ることによつて270℃に保持され、一定時間経過
後再び上昇する。 After the incinerator 2 starts operating, if the gas cooling chamber outlet gas temperature Tg1 is below 250° C., the cooling chamber damper 14 is open and the furnace damper 10 is closed (step S1). As the combustion load of garbage in the incinerator 2 increases, the gas temperature Tg1 at the outlet of the gas cooling chamber increases.
When the temperature reaches 250°C or higher (step S2), the second gas cooling chamber outlet temperature control device 15 is activated by a command to
Fan 9 starts (step 3) and air injection port 1
Cooling air is sent to No. 3 via a cooling damper 14. As the combustion load increases, the gas temperature Tg1 at the outlet of the gas cooling chamber increases, is maintained at 270° C. by appropriately controlling the amount of cooling air, and increases again after a certain period of time.
そして、ガス冷却室出口ガス温度Tg1が290℃
以上になると（ステツプS4）、第２ガス冷却室出
口温度制御装置１５の指令によつて冷却室用ダン
パ１４が閉状態になり、炉用ダンパ１０が開状態
となると共に、フアン９も停止する。同時に第１
ガス冷却室出口温度制御装置７の命令によつてポ
ンプ５が起動する。従つて、水噴射ノズル４にポ
ンプ５から噴射水が供給され、フアン９からの空
気噴射口１３への冷却空気は停止される（ステツ
プS5）。さらに、ガス冷却室出口ガス温度Tg1が
上昇して300℃（燃焼負荷の検出温度は制御温度
の300℃より低い290℃としている。）になると、
第１温度センサ６の温度信号を受けた第１ガス冷
却室出口温度制御装置７の指令によつてポンプ５
からの噴射水量が水量調整弁１６を介して制御さ
れる。このためガス冷却室出口ガス温度Tg1は、
燃焼負荷が変化しても、常時300℃に制御される。 And the gas cooling chamber outlet gas temperature Tg1 is 290℃
When the temperature reaches the above level (step S4), the cooling chamber damper 14 is closed, the furnace damper 10 is opened, and the fan 9 is also stopped in response to a command from the second gas cooling chamber outlet temperature control device 15. . At the same time the first
The pump 5 is activated by a command from the gas cooling chamber outlet temperature control device 7. Therefore, water is supplied to the water injection nozzle 4 from the pump 5, and cooling air from the fan 9 to the air injection port 13 is stopped (step S5). Furthermore, when the gas temperature Tg1 at the outlet of the gas cooling chamber rises to 300°C (the combustion load detection temperature is 290°C, which is lower than the control temperature of 300°C),
The pump 5
The amount of water injected from the pump is controlled via a water amount adjustment valve 16. Therefore, the gas temperature Tg1 at the outlet of the gas cooling chamber is
Even if the combustion load changes, it is always controlled at 300℃.
一方、焼却炉出口ガス温度Tg2が900℃以上に
なると（ステツプS6）、炉出口温度制御装置１２
の指令によつてフアン９は起動する（ステツプ
S7）。従つて、炉温制御用空気ノズル８には炉用
ダンパ１０を介して冷却空気が送風され、炉出口
温度制御装置１２によつて焼却炉２へ供給される
冷却空気量が制御される。この結果、焼却炉２内
の温度は一定温度範囲内（約900℃〜約950℃）に
維持され、炉体寿命が長くなり、窒素酸化物の発
生も制限される。 On the other hand, when the incinerator outlet gas temperature Tg2 becomes 900°C or higher (step S6), the incinerator outlet temperature control device 12
The fan 9 is activated by the command (step
S7). Therefore, cooling air is blown to the furnace temperature control air nozzle 8 via the furnace damper 10, and the amount of cooling air supplied to the incinerator 2 is controlled by the furnace outlet temperature control device 12. As a result, the temperature inside the incinerator 2 is maintained within a certain temperature range (approximately 900° C. to approximately 950° C.), the life of the furnace body is extended, and the generation of nitrogen oxides is limited.
焼却炉出口ガス温度Tg2が900℃以下になると、
炉出口ガス温度制御装置１２の指令によつてフア
ン９は停止し（ステツプS8）、炉温制御用空気ノ
ズル８には冷却空気は送風されない。 When the incinerator outlet gas temperature Tg2 falls below 900℃,
The fan 9 is stopped in response to a command from the furnace outlet gas temperature control device 12 (step S8), and no cooling air is blown into the furnace temperature control air nozzle 8.
燃焼負荷が低下し、ガス冷却室出口ガス温度
Tg1が300℃より下がり、290℃に達すると（ステ
ツプS4）、第２ガス冷却室出口温度制御装置１５
の命令によつて冷却室用ダンパ１４が開状態とな
り、炉用ダンパ１０が閉状態となると共にフアン
９が起動する。同時に第１ガス冷却室出口温度制
御装置７の命令によつてポンプ５が停止する。従
つて、ポンプ５から水噴射ノズル４への噴射水の
供給が停止され、空気噴射口１３に冷却空気がフ
アン９から送風される（ステツプS9）。さらに、
燃焼負荷の減少に伴い、ガス冷却室出口ガス温度
Tg1が250℃以下になると、第２ガス冷却室出口
温度制御装置１５の命令によつてフアン９が停止
する（ステツプS10）。 The combustion load decreases, and the gas temperature at the outlet of the gas cooling chamber decreases.
When Tg1 falls below 300°C and reaches 290°C (step S4), the second gas cooling chamber outlet temperature control device 15
In response to this command, the cooling chamber damper 14 is opened, the furnace damper 10 is closed, and the fan 9 is started. At the same time, the pump 5 is stopped by a command from the first gas cooling chamber outlet temperature control device 7. Therefore, the supply of jet water from the pump 5 to the water jet nozzle 4 is stopped, and cooling air is blown from the fan 9 to the air jet port 13 (step S9). moreover,
As the combustion load decreases, the gas temperature at the outlet of the gas cooling chamber increases.
When Tg1 becomes 250° C. or lower, the fan 9 is stopped by a command from the second gas cooling chamber outlet temperature control device 15 (step S10).
以上の如き構成に係るごみ焼却炉の排ガス冷却
制御装置１にあつては、ガス冷却室出口ガス温度
Tg1が290℃以上の時にはポンプ５から水噴射ノ
ズル４に噴射水が供給され、ガス冷却室出口ガス
温度は300℃に冷却制御される。ガス冷却室出口
ガス温度Tg1が290℃以下の時にはフアン９から
空気噴射口１３に冷却空気が送風され、冷却空気
によつてガス冷却室３は冷却される。従つて、こ
の場合ガス冷却室３は噴射水の蒸発によつて冷却
されないので、ガス冷却室３内の壁面３ａが余剰
水によつて濡れることはなく、壁面３ａを構成す
る耐火レンガはスポークリングを起こさず損傷し
ない。 In the exhaust gas cooling control device 1 for a waste incinerator having the above configuration, the temperature of the gas at the outlet of the gas cooling chamber is
When Tg1 is 290°C or higher, water is supplied from the pump 5 to the water injection nozzle 4, and the gas temperature at the outlet of the gas cooling chamber is cooled to 300°C. When the gas cooling chamber outlet gas temperature Tg1 is 290° C. or less, cooling air is blown from the fan 9 to the air injection port 13, and the gas cooling chamber 3 is cooled by the cooling air. Therefore, in this case, the gas cooling chamber 3 is not cooled by the evaporation of the injected water, so the wall surface 3a inside the gas cooling chamber 3 is not wetted by excess water, and the refractory bricks forming the wall surface 3a are made of spoke rings. will not cause any damage.
又、同時に、以下に示す理由によつて、空気噴
射口１３を通過する冷却空気によつて水噴射ノズ
ル４が冷却される時間が長くなり、水噴射ノズル
４は過熱されることなく、高温腐食を引き起こさ
ない。 At the same time, for the reasons described below, the time for cooling the water injection nozzle 4 by the cooling air passing through the air injection port 13 becomes longer, and the water injection nozzle 4 is not overheated and is prevented from high-temperature corrosion. does not cause
ガス冷却室出口ガス温度が290℃以下の時、水
噴射ノズル４は冷却空気によつて冷却される。冷
却空気による冷却は水噴射による冷却による場合
よりも冷却効率が低い。従つて、蓄積されたガス
冷却室３の壁面３ａの冷却効率が低く、水噴射の
場合に比べて著しく冷却時間が長くなる。このた
め、ガス冷却室出口ガス温度が290℃以下の時に
は冷却空気はほとんど常時送風されている。 When the gas temperature at the outlet of the gas cooling chamber is below 290°C, the water injection nozzle 4 is cooled by cooling air. Cooling by cooling air has lower cooling efficiency than cooling by water injection. Therefore, the cooling efficiency of the wall surface 3a of the accumulated gas cooling chamber 3 is low, and the cooling time is significantly longer than in the case of water injection. Therefore, when the gas temperature at the outlet of the gas cooling chamber is below 290°C, cooling air is blown almost all the time.
(チ) 考案の効果
以上述べたように本考案によれば、焼却炉の排
ガス冷却制御装置にあつて、噴射水によつて冷却
されるガス冷却室に余剰水を出さず、且つ水噴射
ノズルを保護することができるという効果を奏す
る。(h) Effects of the invention As described above, according to the invention, in the exhaust gas cooling control device of an incinerator, surplus water is not discharged into the gas cooling chamber cooled by water injection, and the water injection nozzle It has the effect of being able to protect the
第１図は本考案の実施例に係るごみ焼却炉の排
ガス冷却制御装置の構成図、第２図は第１図のＡ
部拡大図、第３図は同排ガス冷却制御装置の制御
動作説明図、第４図は同排ガス冷却制御装置のフ
ローチヤート、第５図は従来に於けるごみ焼却炉
の排ガス冷却制御装置の構成図である。
１……ごみ焼却炉の排ガス冷却制御装置、３…
…ガス冷却室、３ａ……壁面、３ｂ……出口、４
……水噴射ノズル、５……ポンプ、６……第１温
度センサ、７……第１ガス冷却室出口温度制御装
置、８……炉温制御用空気ノズル、９……フア
ン、１０……炉用ダンパ、１１……第２温度セン
サ、１２……炉出口温度制御装置、１３……空気
噴射口、１４……冷却室用ダンパ、１５……第２
ガス冷却室出口温度制御装置。
Figure 1 is a configuration diagram of an exhaust gas cooling control device for a waste incinerator according to an embodiment of the present invention, and Figure 2 is A of Figure 1.
3 is an explanatory diagram of the control operation of the exhaust gas cooling control device, FIG. 4 is a flowchart of the same exhaust gas cooling control device, and FIG. 5 is the configuration of the conventional exhaust gas cooling control device of a garbage incinerator. It is a diagram. 1... Garbage incinerator exhaust gas cooling control device, 3...
...Gas cooling chamber, 3a...Wall surface, 3b...Exit, 4
... Water injection nozzle, 5 ... Pump, 6 ... First temperature sensor, 7 ... First gas cooling chamber outlet temperature control device, 8 ... Furnace temperature control air nozzle, 9 ... Fan, 10 ... Furnace damper, 11... Second temperature sensor, 12... Furnace outlet temperature control device, 13... Air injection port, 14... Cooling chamber damper, 15... Second
Gas cooling chamber outlet temperature control device.
Claims (1)
設けられた水噴射ノズルと、水噴射ノズルに噴射
水を圧送するポンプと、ガス冷却室出口の温度を
検出する温度センサと、温度センサから検出され
た温度信号を受けてガス冷却室出口の温度が所定
の値となるようにポンプからの噴射水の流量を制
御するガス冷却室出口ガス温度制御装置とを備え
たごみ焼却炉の排ガス冷却制御装置に於て、ガス
冷却室の壁面に水噴射ノズルを囲んで空気噴射口
を設け、この空気噴射口に空気を送風するフアン
を配し、ガス冷却室出口ガス温度制御装置の指令
により、所定の温度付近より高い時にポンプから
水噴射ノズルに噴射水を圧送し、所定の温度付近
より低い時にはフアンから空気噴射口に冷却空気
を送風するように構成したことを特徴とするごみ
焼却炉の排ガス冷却制御装置。 An incinerator, a gas cooling chamber, a water injection nozzle provided on the wall of the gas cooling chamber, a pump that pumps water to the water injection nozzle, a temperature sensor that detects the temperature at the outlet of the gas cooling chamber, and a temperature sensor. and a gas cooling chamber outlet gas temperature control device that controls the flow rate of water injected from the pump so that the temperature at the gas cooling chamber outlet reaches a predetermined value in response to a temperature signal detected from the waste incinerator. In the cooling control device, an air injection port is provided on the wall of the gas cooling chamber surrounding a water injection nozzle, and a fan for blowing air is placed in the air injection port, and the temperature control device , a garbage incinerator characterized by being configured such that when the temperature is higher than around a predetermined temperature, water is forced to be jetted from a pump to a water injection nozzle, and when the temperature is lower than around a predetermined temperature, cooling air is blown from a fan to an air jet nozzle. exhaust gas cooling control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13784785U JPH0223956Y2 (en) | 1985-09-09 | 1985-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13784785U JPH0223956Y2 (en) | 1985-09-09 | 1985-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6245534U JPS6245534U (en) | 1987-03-19 |
| JPH0223956Y2 true JPH0223956Y2 (en) | 1990-06-29 |
Family
ID=31042281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13784785U Expired JPH0223956Y2 (en) | 1985-09-09 | 1985-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0223956Y2 (en) |
-
1985
- 1985-09-09 JP JP13784785U patent/JPH0223956Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6245534U (en) | 1987-03-19 |
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