JPS5932603B2 - Exhaust gas temperature adjustment device for aggregate heating and drying equipment in asphalt plants - Google Patents
Exhaust gas temperature adjustment device for aggregate heating and drying equipment in asphalt plantsInfo
- Publication number
- JPS5932603B2 JPS5932603B2 JP15045680A JP15045680A JPS5932603B2 JP S5932603 B2 JPS5932603 B2 JP S5932603B2 JP 15045680 A JP15045680 A JP 15045680A JP 15045680 A JP15045680 A JP 15045680A JP S5932603 B2 JPS5932603 B2 JP S5932603B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- valve
- temperature
- gas temperature
- bag filter
- 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
Description
【発明の詳細な説明】
本発明は新規なアスファルトプラントにおける骨材加熱
乾燥装置の排ガス温度調整装置に関するもので、バグフ
ィルタ装置のＦ布の焼損を防止すると共に噴水による排
ガスのガス量の増加が僅かであり、排風機による骨材乾
燥装置内で発生する排ガスの排出に支障を与えず、骨材
乾燥装置の燃焼効率を低下させず、しかも排ガスの温度
に対応して噴水し、バグフィルタ装置内に結露を生ぜず
、バグフィルタ装置のＦ３ｍ効率の低下のないものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new exhaust gas temperature adjustment device for an aggregate heating drying device in an asphalt plant, which prevents burnout of the F cloth of a bag filter device and prevents an increase in the amount of exhaust gas caused by a fountain. The amount of water is small, does not interfere with the exhaust gas generated in the aggregate drying equipment by the exhaust fan, does not reduce the combustion efficiency of the aggregate drying equipment, and also sprays water according to the temperature of the exhaust gas, making it possible to use a bag filter system. There is no dew condensation inside the bag filter device, and there is no decrease in the F3m efficiency of the bag filter device.
従来、アスファルトプラントにおける骨材乾燥装置で発
生する排ガスの温度を低下してバグフィルタ装置の炉布
を保護する手段として前記排ガス中に外気を導入してい
たが、この場合バグフィルタ装置の入口温度を１８０〜
２００℃程度に低下するためには、多量の外気を導入し
なげればならないために、骨材乾燥装置の排ガスを十分
に排出できず、骨材乾燥装置の燃焼効率が低下し、骨材
の乾燥を十分に行なうことができず、燃焼効率の底下に
よって未燃焼ガスを発生し、公害を生ずると共に燃料を
浪費する等の欠点があったが、本発明者は種々実験研究
の結果、このような欠点のない本発明を得たのである。Conventionally, outside air was introduced into the exhaust gas as a means of lowering the temperature of the exhaust gas generated in the aggregate drying equipment in an asphalt plant and protecting the furnace cloth of the bag filter equipment, but in this case, the inlet temperature of the bag filter equipment 180～
In order to lower the temperature to around 200℃, a large amount of outside air must be introduced, which prevents the exhaust gas from the aggregate drying equipment from being sufficiently exhausted, reducing the combustion efficiency of the aggregate drying equipment and causing the aggregate to dry. However, as a result of various experimental studies, the inventor of the present invention has found that this method has the following disadvantages: drying cannot be carried out sufficiently, and unburned gas is generated due to low combustion efficiency, causing pollution and wasting fuel. Thus, the present invention has been obtained without any drawbacks.
以下本発明の具体例を図面によって説明すると、内部に
送り羽根、掻上げ羽根、攪拌羽根等を適宜有し、適宜の
回転機構によって回転し、水平面に対して適宜の角度傾
斜し、バーナ２、骨材投入−３、乾燥骨材排出口４を有
する回転ドラム５よりなる骨材乾燥装置６と内部に炉布
７を有する適宜の構成よりなるバグフィルタ装置８とを
、中間に適宜の構成よりなるサイクロン集塵機９を有す
る排ガス管１０及び１によって連結し、バグフィルタ装
置８近くの排ガス管１に排ガスの温度を測定する温度検
出素子１１を有し、排ガスの温度に対応して電気信号を
発生する排ガス温度測定装置１２を固着し、排ガス管１
０内に開口する噴水ノズル１３を排ガス管１０に固着し
、噴水ノズル１３に接続した給水管１４に開閉弁１５と
遠心式のポンプ１６とを挿入し、ポンプ１６の吸入管１
７を水槽等適宜の水源に接続し、開閉弁１５には内装し
ている弁を開閉すると共に弁の開度を排ガス温度測定装
置１２よりの電気信号によって制御する弁制御装置１８
を付設し、ポンプ１６を駆動するモータ１９に、排ガス
温度測定装置１２よりの電気信号によって電源を接続、
遮断するスイッチ切換装置２０を付設し、排ガス温度測
定装置１２で排ガス温度に対応して生ずる電気信号によ
って弁制御装置１８を作動し、開閉弁１５に内装してい
る弁を閉止より全開まで無段階にあるいは閉止または全
開に、排ガスの温度に対応して駆動する。Hereinafter, a specific example of the present invention will be described with reference to the drawings. The burner 2 has internal feed blades, raking blades, stirring blades, etc. as appropriate, is rotated by an appropriate rotation mechanism, is tilted at an appropriate angle with respect to the horizontal plane, An aggregate drying device 6 consisting of a rotating drum 5 having an aggregate input 3 and a dry aggregate outlet 4 and a bag filter device 8 having an appropriate configuration and having a furnace cloth 7 inside are arranged in the middle. A cyclone dust collector 9 is connected by exhaust gas pipes 10 and 1, and the exhaust gas pipe 1 near the bag filter device 8 has a temperature detection element 11 for measuring the temperature of the exhaust gas, and generates an electric signal in response to the temperature of the exhaust gas. The exhaust gas temperature measuring device 12 is fixed to the exhaust gas pipe 1.
A fountain nozzle 13 that opens inward is fixed to the exhaust gas pipe 10, an on-off valve 15 and a centrifugal pump 16 are inserted into the water supply pipe 14 connected to the fountain nozzle 13, and the suction pipe 1 of the pump 16 is inserted into the water supply pipe 14 connected to the fountain nozzle 13.
7 is connected to an appropriate water source such as a water tank, and a valve control device 18 opens and closes a valve installed in the on-off valve 15 and controls the degree of opening of the valve by an electric signal from the exhaust gas temperature measuring device 12.
is attached, and a power source is connected to the motor 19 that drives the pump 16 by an electric signal from the exhaust gas temperature measuring device 12.
A switch switching device 20 for shutting off is attached, and the valve control device 18 is actuated by an electric signal generated in response to the exhaust gas temperature by the exhaust gas temperature measuring device 12, and the valve inside the on-off valve 15 is controlled steplessly from close to fully open. Depending on the temperature of the exhaust gas, the exhaust gas can be closed or fully opened.
ものであり、温度検出素子１１に接触する排ガスの温度
が所定温度例えば１８０℃までは開閉弁１５の弁は閉止
し、排ガスの温度が所定以上例えば１８０℃以上となる
と弁が開き始め、所定温度例えば２００℃において全開
となり、排ガスの温度が１８０〜２００℃までの間は開
閉弁１５の弁によって噴水ノズル１３よりの噴水量を排
ガスの温度に応じて最大噴水量まで制御するものであり
、また何等かの事故例えば骨材乾燥装置に骨材が供給さ
れず、排ガス温度が急激に所定温度例えば２００℃以上
となると、排ガス温度測定装置１２よりの電気信号によ
って弁制御装置１８が応動し開閉弁１５の弁を全開し、
噴水ノズル１３よりの噴水を最大量とするものである。The valve of the on-off valve 15 is closed when the temperature of the exhaust gas in contact with the temperature detection element 11 reaches a predetermined temperature, e.g. 180°C, and when the temperature of the exhaust gas reaches a predetermined temperature, e.g. 180°C or higher, the valve starts to open. For example, it is fully opened at 200°C, and when the exhaust gas temperature is between 180 and 200°C, the on-off valve 15 controls the amount of water from the fountain nozzle 13 to the maximum amount depending on the temperature of the exhaust gas. If some kind of accident occurs, for example, aggregates are not supplied to the aggregate drying device and the exhaust gas temperature suddenly rises to a predetermined temperature, for example, 200°C or higher, the valve control device 18 responds to the electric signal from the exhaust gas temperature measuring device 12 to open/close the valve. Fully open 15 valves,
This is to maximize the amount of water from the fountain nozzle 13.
排ガス温度測定装置１２で発生する電気信号によってポ
ンプ１６を駆動するモータ１９のスイッチ切換装置２０
を作動し、モータ１９を回転し、ポンプ１６を駆動し、
給水管１４に給水し、前記電気信号の遮断と共にモータ
１９への通電を遮断し、ポンプ１６を停止し、給水を中
止するものである。A switch changeover device 20 for the motor 19 that drives the pump 16 based on the electric signal generated by the exhaust gas temperature measuring device 12
, rotates the motor 19, drives the pump 16,
Water is supplied to the water supply pipe 14, the electrical signal is cut off, the power to the motor 19 is cut off, the pump 16 is stopped, and the water supply is stopped.
尚、図中２１は排風帰、２２・・・煙突、２３・・・電
源、２４は配線である。In the figure, 21 is an air exhaust return, 22 is a chimney, 23 is a power source, and 24 is a wiring.
尚、噴水ノズル１３をサイクロン集塵機９と温度検出素
子１１との間の排ガス管、１に固着しても良いものであ
る。Incidentally, the fountain nozzle 13 may be fixed to the exhaust gas pipe 1 between the cyclone dust collector 9 and the temperature detection element 11.
上記のように構成した本発明は骨材乾燥装置６より発生
する高温の排ガスが排ガス管１０、サイクロン集塵機９
、排ガス管１を経てバグフィルタ装置８に導入される直
前において、バグフィルタ装置８内の濾布７を焼損ある
いは劣化させる温度に近い温度例へば１８０℃以上であ
ると、排気ガス温度測定装置１２の温度検出素子１１が
作動し、排気ガス温度測定装置１２より配線２４によっ
て弁制御装置１８とスイッチ切換装置２０に電気信号を
与え、先づスイッチ切換装置２０のモータ１９電気回路
を閉成し、モータ１９を回転し、ポンプ１６を１駆動し
、給水を開始すると同時に弁制御装置１８によって排気
ガス温度を所定温度例えば１８０〜２００℃程度とする
に必要な噴出量とするように開閉弁１５の弁を開くもの
であり、排ガス温度が所定温度例えば１８０℃以下とな
ったときは排気ガス温度測定装置１２よりの電気信号が
遮断されると開閉弁１５の弁は閉止し、ポンプ１６は停
止し、給水を停止するものである。In the present invention configured as described above, the high temperature exhaust gas generated from the aggregate drying device 6 is transferred to the exhaust gas pipe 10 and the cyclone dust collector 9.
Immediately before the exhaust gas is introduced into the bag filter device 8 via the exhaust gas pipe 1, if the temperature is close to the temperature that burns out or deteriorates the filter cloth 7 in the bag filter device 8, for example 180° C. or higher, the temperature of the exhaust gas temperature measuring device 12 is increased. The temperature detection element 11 is activated, and the exhaust gas temperature measurement device 12 gives an electric signal to the valve control device 18 and the switch changeover device 20 through the wiring 24, firstly, the electric circuit of the motor 19 of the switch changeover device 20 is closed, and the motor 19, the pump 16 is driven 1, and at the same time water supply is started, the valve control device 18 controls the valve of the on-off valve 15 so that the amount of ejection necessary to bring the exhaust gas temperature to a predetermined temperature, for example, about 180 to 200 degrees Celsius, is controlled by the valve control device 18. When the exhaust gas temperature falls below a predetermined temperature, for example 180°C, the electric signal from the exhaust gas temperature measuring device 12 is cut off, the on-off valve 15 closes, and the pump 16 stops. This will stop the water supply.
本発明は骨材乾燥装置とバグフィルタ装置とを排ガス管
によって連結し、バグフィルタ装置近くの排ガス管に、
排ガス管内の排ガスの温度を測定する排ガス温度測定装
置を固着し、排ガス管内に開口する噴水ノズルを排ガス
管に固着し、噴水ノズルに接続した給水管に開閉弁とポ
ンプとを配設し、開閉弁に、弁の開度を制御する弁制御
装置を付設し、ポンプを駆動するモータにスイッチ切換
装置を付設し、排ガス温度測定装置で排ガス温度に対応
して生ずる電気信号によって弁制御装置とスイッチ切換
装置とを作動せしめるものであり、排ガスが所定温度以
上となると排ガス中に噴水し排ガスの温度を低下し、バ
グフィルタ装置内の流布の焼損を防止すると共に噴水の
蒸発による排ガスのガス量の増加が僅かであり、排風機
による骨材乾燥装置内で発生する排気ガスの排出に支障
を与えず、骨材乾燥装置の燃焼効率を低下させず、しか
も排ガスの温度に対応して噴水し、水分を完全に蒸発さ
せ、バグフィルタ装置内に結露を生ぜず、バグフィルタ
装置の流過効率を低下させないものである。The present invention connects the aggregate drying device and the bag filter device by an exhaust gas pipe, and connects the aggregate drying device and the bag filter device to the exhaust gas pipe near the bag filter device.
An exhaust gas temperature measurement device that measures the temperature of exhaust gas in the exhaust gas pipe is fixed, a fountain nozzle that opens into the exhaust gas pipe is fixed to the exhaust gas pipe, and an on-off valve and a pump are installed in the water supply pipe connected to the fountain nozzle. The valve is equipped with a valve control device that controls the opening degree of the valve, and the motor that drives the pump is equipped with a switch changeover device, and the valve control device and the switch are connected by an electric signal generated in response to the exhaust gas temperature by the exhaust gas temperature measuring device. When the exhaust gas reaches a predetermined temperature or higher, water is sprayed into the exhaust gas to lower the temperature of the exhaust gas, prevent the cloth in the bag filter from being burned out, and reduce the amount of exhaust gas due to evaporation of the fountain. The increase is slight, it does not interfere with the exhaust gas discharge generated in the aggregate drying equipment by the exhaust fan, it does not reduce the combustion efficiency of the aggregate drying equipment, and the water fountain corresponds to the temperature of the exhaust gas, It completely evaporates moisture, does not cause condensation inside the bag filter device, and does not reduce the flow efficiency of the bag filter device.
図面は一部切截した配置図である。
６・・・骨材乾燥装置、８・・・バグフィルタ装置、１
．１０・・・排ガス管、１２・・・排ガス温度測定装置
、１３・・・噴水ノズル、１４・・・給水管、１５・・
・開閉弁、１６・・・ポンプ、１８・・・弁制御装置、
１９・・・モータ、２０・・・スイッチ切換装置。The drawing is a partially cutaway layout diagram. 6... Aggregate drying device, 8... Bag filter device, 1
．． DESCRIPTION OF SYMBOLS 10... Exhaust gas pipe, 12... Exhaust gas temperature measuring device, 13... Fountain nozzle, 14... Water supply pipe, 15...
・Opening/closing valve, 16...pump, 18...valve control device,
19...Motor, 20...Switch switching device.
Claims (1)
って連結し、前記バグフィルタ装置近くの前記排ガス管
に、前記排ガス管内の排ガスの温度を測定する排ガス温
度測定装置を固着し、前記排ガス管内に開口する噴水ノ
ズルを前記排ガス管に固着し、前記噴水ノズルに接続し
た給水管に開閉弁とポンプとを配設し、前記開閉弁に、
弁の開閉を制御する弁制御装置を付設し、前記ポンプを
駆動するモータにスイッチ切換装置を付設し、前記排ガ
ス温度測定装置で排ガス温度に対応して生ずる電気信号
によって前記弁制御装置と前記スイッチ切換装置とを作
動せしめることを特徴とするアスファルトプラントにお
ける骨材加熱乾燥装置の排ガス温度調整装置。1. An aggregate drying device and a bag filter device are connected by an exhaust gas pipe, and an exhaust gas temperature measuring device for measuring the temperature of exhaust gas in the exhaust gas pipe is fixed to the exhaust gas pipe near the bag filter device, and a A fountain nozzle to be opened is fixed to the exhaust gas pipe, an on-off valve and a pump are arranged in a water supply pipe connected to the fountain nozzle, and the on-off valve includes:
A valve control device for controlling opening and closing of the valve is attached, a switch changeover device is attached to the motor that drives the pump, and the valve control device and the switch are attached by an electric signal generated in response to the exhaust gas temperature by the exhaust gas temperature measuring device. An exhaust gas temperature adjustment device for an aggregate heating drying device in an asphalt plant, characterized in that the device operates a switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15045680A JPS5932603B2 (en) | 1980-10-27 | 1980-10-27 | Exhaust gas temperature adjustment device for aggregate heating and drying equipment in asphalt plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15045680A JPS5932603B2 (en) | 1980-10-27 | 1980-10-27 | Exhaust gas temperature adjustment device for aggregate heating and drying equipment in asphalt plants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5774408A JPS5774408A (en) | 1982-05-10 |
| JPS5932603B2 true JPS5932603B2 (en) | 1984-08-09 |
Family
ID=15497318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15045680A Expired JPS5932603B2 (en) | 1980-10-27 | 1980-10-27 | Exhaust gas temperature adjustment device for aggregate heating and drying equipment in asphalt plants |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5932603B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278032A (en) * | 1985-09-24 | 1987-04-10 | 友和産業株式会社 | Bonder for film by ultrasonic wave |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02153103A (en) * | 1988-12-05 | 1990-06-12 | Nikko Co Ltd | Rotation controlling method and device for aggregate heating drier |
| JPH086808Y2 (en) * | 1990-09-21 | 1996-02-28 | 日工株式会社 | Dryer burner device for heating aggregates |
-
1980
- 1980-10-27 JP JP15045680A patent/JPS5932603B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278032A (en) * | 1985-09-24 | 1987-04-10 | 友和産業株式会社 | Bonder for film by ultrasonic wave |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5774408A (en) | 1982-05-10 |
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