JP2023120488A - Intake/exhaust device of sintered ore cooling machine - Google Patents
Intake/exhaust device of sintered ore cooling machine Download PDFInfo
- Publication number
- JP2023120488A JP2023120488A JP2022023395A JP2022023395A JP2023120488A JP 2023120488 A JP2023120488 A JP 2023120488A JP 2022023395 A JP2022023395 A JP 2022023395A JP 2022023395 A JP2022023395 A JP 2022023395A JP 2023120488 A JP2023120488 A JP 2023120488A
- Authority
- JP
- Japan
- Prior art keywords
- hood
- gas
- exhaust
- flow rate
- trough
- 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
- 238000001816 cooling Methods 0.000 title abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 88
- 239000000112 cooling gas Substances 0.000 claims abstract description 56
- 238000005086 pumping Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 9
- 230000006866 deterioration Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
本発明は、複数のトラフ台車上に焼結機で焼結された焼結鉱を積層させ、前記複数のトラフ台車を移動させながら前記焼結鉱の層中に冷却ガスを通気することで連続的に前記焼結鉱を冷却する焼結鉱冷却機の給排気装置に関する。 In the present invention, sintered ore sintered by a sintering machine is stacked on a plurality of trough vehicles, and a cooling gas is passed through the layers of the sintered ore while moving the plurality of trough vehicles. The present invention relates to an air supply/exhaust device for a sintered ore cooler that effectively cools the sintered ore.
従来、複数のトラフ台車上に焼結機で焼結された焼結鉱を積層させ、これら複数のトラフ台車を移動させながら焼結鉱の層中に下方から上方に向けて冷却ガスを通気することで連続的に焼結鉱を冷却する焼結鉱冷却機が知られている。 Conventionally, sintered ore sintered by a sintering machine is stacked on a plurality of trough carriages, and a cooling gas is passed through the layers of sintered ore from the bottom to the top while moving the plurality of trough carriages. A sintered ore cooler for continuously cooling sintered ore is known.
このような焼結鉱冷却機においては、昨今の環境規制の高まりから、焼結鉱粉塵の系外への漏洩を抑制するために、トラフ台車の上方の少なくとも一部をフードで覆い、密封を保つべくフードとトラフ台車との間にシール機構を設けるようになっている。 In such a sinter cooler, in order to suppress the leakage of sinter dust to the outside of the system due to the recent heightened environmental regulations, at least a part of the upper part of the trough truck is covered with a hood and sealed. A seal mechanism is provided between the hood and the trough carriage to keep the same.
トラフ台車はレール上を走行する可動体であり、他方、フードは移動するトラフ台車上に固定設置される固定体であるため、シール機構はこれらが相対移動可能なように設けられる必要がある。このようなシール機構としては、例えば、長尺のクロス等のシール材の幅方向片側をシール材が下側に垂れ下がるように固定側のフードに取り付け、このシール材の下側をトラフ台車の側面に面接触させてフードとトラフ台車との隙間をシールする方法がある。また、特許文献１に開示されているように、水封ボックス内に溜めた水を用いてシールする水封式シールとするものもある。 Since the trough truck is a movable body that runs on rails, and the hood is a fixed body that is fixedly installed on the moving trough truck, the seal mechanism must be provided so that they can move relative to each other. As such a sealing mechanism, for example, one side in the width direction of a sealing material such as a long cloth is attached to the hood on the fixed side so that the sealing material hangs down, and the lower side of this sealing material is attached to the side of the trough truck. There is a method of sealing the gap between the hood and the trough carriage by making surface contact with the hood. Further, as disclosed in Patent Document 1, there is also a water sealing type seal that uses water stored in a water sealing box for sealing.
しかし、クロスを用いる場合、経年劣化によるクロスの擦り切れやフードとトラフ台車との間の高さ方向、幅方向の隙間発生によりガスや粉塵が漏洩することがあった。特に、トラフ台車の側壁が変形したり、車輪の摩耗でトラフ台車が沈んだり、トラフ台車の車軸方向における偏心が発生して、トラフ台車とフードとの間の隙間が拡大すると、漏洩量が増加することになる。なお、機械的にこのようなシール材（クロス等）を常にシール面（トラフ台車）に押しあてる方法もあるが、シール面が波うち状に変形した場合、隙間が発生してガスや粉塵が漏洩しやすくなる。 However, when the cloth is used, gas and dust may leak due to wear of the cloth due to deterioration over time and the occurrence of gaps in the height direction and width direction between the hood and the trough truck. In particular, if the side wall of the trough truck is deformed, the trough truck sinks due to wear of the wheels, or the eccentricity in the axle direction of the trough truck occurs, and the gap between the trough truck and the hood expands, the amount of leakage increases. will do. There is also a method of mechanically pressing such a sealing material (cloth, etc.) against the sealing surface (trough truck) at all times. leaks more easily.
また、水封式シールの場合、漏洩した焼結鉱が水封ボックス内に堆積すると、クーラ回転時の抵抗となったり、水封機能自体が失われたりすることがあった。 Further, in the case of the water sealing type seal, if the leaked sintered ore accumulates in the water sealing box, it may cause resistance during rotation of the cooler, or the water sealing function itself may be lost.
本発明はかかる課題を解決するためになされたものであり、経年劣化等でトラフ台車側壁が沈んだり変形等してシール機構のシール効果が低下し、トラフ台車とフードの間に隙間が発生した場合にも、トラフ台車側（可動側）とフード側（固定側）との間のシール部分からガスや粉塵が系外に漏洩することを防止できる焼結鉱冷却機の給排気装置を提供することを目的としている。 The present invention was devised to solve this problem. Due to aged deterioration, etc., the side wall of the trough carriage sinks or deforms, reducing the sealing effect of the sealing mechanism and creating a gap between the trough carriage and the hood. Provided is an air supply/exhaust device for a sinter cooler capable of preventing gas and dust from leaking out of the system from a sealing part between a trough truck side (movable side) and a hood side (fixed side) even in the case of a sintered ore cooler. It is intended to
（１）本発明に係る焼結鉱冷却機の給排気装置は、上方の少なくとも一部がフードで覆われた複数のトラフ台車上に焼結機で焼結された焼結鉱を積層させ、前記複数のトラフ台車を移動させながら前記焼結鉱の層中に冷却ガスを通気することで連続的に前記焼結鉱を冷却する焼結鉱冷却機の給排気装置であって、
前記冷却ガスを前記複数のトラフ台車の下方に供給するための冷却ガス圧送装置と、
前記フードで覆われた空間から排気ガスを吸引して外部に排出するための排気ガス吸引装置と、
前記冷却ガスの流量が前記排気ガスの流量よりも小さくなるように、前記冷却ガス圧送装置及び前記排気ガス吸引装置のうちの少なくともいずれか一方を制御するよう構成された制御装置と、
を備えることを特徴とするものである。
(1) A supply and exhaust device for a sinter cooler according to the present invention stacks sintered ore sintered by a sintering machine on a plurality of trough carriages whose upper at least part is covered with a hood, An air supply and exhaust device for a sintered ore cooler that continuously cools the sintered ore by passing a cooling gas through the layer of the sintered ore while moving the plurality of trough trucks,
a cooling gas pumping device for supplying the cooling gas below the plurality of trough trucks;
an exhaust gas suction device for sucking exhaust gas from the space covered by the hood and discharging it to the outside;
a control device configured to control at least one of the cooling gas pumping device and the exhaust gas suction device such that the flow rate of the cooling gas is smaller than the flow rate of the exhaust gas;
It is characterized by comprising
（２）また、上記（１）に記載のものにおいて、前記冷却ガス圧送装置は、前記冷却ガスの流量を計測する冷却ガス流量計が設けられた圧送管を有し、
前記排気ガス吸引装置は、前記排気ガスの流量を計測する排気ガス流量計が設けられた排気管を有し、
前記圧送管と前記排気管のうちの少なくともいずれか一方に流量調整弁が設けられており、
前記制御装置は、前記冷却ガス流量計の計測値及び前記排気ガス流量計の計測値に基づいて、前記流量調整弁を制御するよう構成されていることが好ましい。
(2) In addition, in the device described in (1) above, the cooling gas pumping device has a pumping pipe provided with a cooling gas flow meter for measuring the flow rate of the cooling gas,
The exhaust gas suction device has an exhaust pipe provided with an exhaust gas flow meter for measuring the flow rate of the exhaust gas,
At least one of the pressure feed pipe and the exhaust pipe is provided with a flow rate adjustment valve,
Preferably, the control device is configured to control the flow control valve based on the measured value of the cooling gas flow meter and the measured value of the exhaust gas flow meter.
（３）また、上記（２）に記載のものにおいて、前記制御装置が、漏風量に基づいて、（前記排気ガスの流量）≧（前記冷却ガスの流量）－（前記漏風量）の関係を満たすように前記冷却ガス流量調整弁と前記排気ガス流量調整弁とを制御するよう構成されていることが好ましい。 (3) In addition, in the device described in (2) above, the control device determines the relationship of (flow rate of the exhaust gas)≧(flow rate of the cooling gas)−(flow rate of the leaked air) based on the leaked air amount. Preferably, the cooling gas flow control valve and the exhaust gas flow control valve are controlled so as to satisfy the conditions.
（４）また、上記（１）～（３）のいずれかに記載のものにおいて、前記複数のトラフ台車のうちの少なくとも１つからなるトラフ台車群ごとに、前記フードで覆われた空間内の圧力を測定するための圧力計と、前記流量調整弁とが設けられ、
前記制御装置は、前記圧力計から得られた圧力値に基づいて、フードで覆われた空間内の圧力が大気圧以上となった前記トラフ台車群について、前記排気ガスの流量を大きくするように前記流量調整弁を制御するよう構成されていることが好ましい。
(4) In addition, in any one of the above (1) to (3), for each trough carriage group consisting of at least one of the plurality of trough carriages, the space covered by the hood A pressure gauge for measuring pressure and the flow control valve are provided,
Based on the pressure value obtained from the pressure gauge, the control device increases the flow rate of the exhaust gas for the trough truck group in which the pressure in the space covered by the hood has reached the atmospheric pressure or higher. It is preferably configured to control the flow control valve.
（５）また、上記（１）～（４）のいずれかに記載のものにおいて、前記フードに接続され、前記フードで覆われた空間内に空気を取り込むガス流入管を更に備えていることが好ましい。 (5) In addition, the apparatus according to any one of (1) to (4) above may further include a gas inflow pipe connected to the hood and taking in air into the space covered by the hood. preferable.
（６）また、上記（５）に記載のものにおいて、前記ガス流入管に、前記フードで覆われた空間から外部に向かう方向のガスの流れを防ぐ逆止弁が設けられていることが好ましい。 (6) Further, in the apparatus described in (5) above, it is preferable that the gas inflow pipe is provided with a check valve that prevents gas from flowing outward from the space covered by the hood. .
（７）また、上記（５）又は（６）に記載のものにおいて、前記ガス流入管は、内径、前記フード内の部分の長さ及び肉厚のそれぞれが所定の範囲内の寸法であることが好ましい。 (7) In addition, in the above (5) or (6), the inner diameter, the length of the portion inside the hood, and the wall thickness of the gas inflow pipe are each within a predetermined range. is preferred.
本発明によれば、トラフ台車とフードとの間の空間全体を安定して負圧に維持することが可能となり、経年劣化等でトラフ台車側壁が沈んだり変形したりしてトラフ台車とフードの間に隙間が発生した場合にも、トラフ台車側（可動側）とフード側（固定側）との間のシール部分からガスや粉塵が系外に漏洩することを防止することができる。 According to the present invention, the entire space between the trough truck and the hood can be stably maintained at a negative pressure. Even if a gap occurs between them, it is possible to prevent gas and dust from leaking out of the system from the seal portion between the trough truck side (movable side) and the hood side (fixed side).
本実施の形態に係る焼結鉱冷却機１の給排気装置３は、図１に示すように、冷却ガスをトラフ台車５の下方に供給するための冷却ガス圧送装置７と、排気ガスを吸引して外部に排出するための排気ガス吸引装置９と、冷却却ガスの流量と排気ガスの流量を制御する制御装置１１とを備えている。本実施形態においては、ＤＣＳ（Ｄｉｓｔｒｉｂｕｔｅｄ Ｃｏｎｔｒｏｌ Ｓｙｓｔｅｍ）である。
以下、各装置構成を詳細に説明する。
As shown in FIG. 1, the supply/exhaust device 3 of the sinter cooler 1 according to the present embodiment includes a cooling gas pumping device 7 for supplying cooling gas to the lower side of the trough truck 5 and a suction device for sucking the exhaust gas. It is provided with an exhaust gas suction device 9 for discharging the exhaust gas to the outside, and a control device 11 for controlling the flow rate of the cooling gas and the flow rate of the exhaust gas. In this embodiment, it is a DCS (Distributed Control System).
Each device configuration will be described in detail below.
＜焼結鉱冷却機＞
焼結鉱冷却機１は、上方の少なくとも一部がフード１３で覆われた複数のトラフ台車５上に焼結機で焼結された焼結鉱１５を積層させ、複数のトラフ台車５を移動させながら焼結鉱１５の層中に冷却ガスを通気することで連続的に焼結鉱１５を冷却するものである。
<Sinter cooler>
The sintered ore cooler 1 stacks the sintered ore 15 sintered by the sintering machine on a plurality of trough trucks 5 whose upper part is at least partially covered with a hood 13, and moves the plurality of trough trucks 5. The sintered ore 15 is continuously cooled by passing a cooling gas through the layer of the sintered ore 15 while heating.
トラフ台車５は、車輪１７と、トラフ１９と、内側側壁２１および外側側壁２３と、風箱２５と、通気板２７とを備えており、通気板２７の上方に粉砕された焼結鉱１５が積層されている。
トラフ台車５は、円環状に区画された領域を、レール（図示なし）に沿って、給鉱装置側から排鉱装置側へと移動する。
固定体であるフード１３と可動体であるトラフ台車５との間にはシール機構２８が設けられており、この部分がシール部分となる。
The trough carriage 5 comprises wheels 17, a trough 19, an inner side wall 21 and an outer side wall 23, a wind box 25, and a ventilation plate 27, above which the pulverized sintered ore 15 is placed. Laminated.
The trough carriage 5 moves in an annularly partitioned area along rails (not shown) from the ore feeding device side to the ore discharging device side.
A sealing mechanism 28 is provided between the hood 13, which is a fixed body, and the trough carriage 5, which is a movable body, and this portion serves as a sealing portion.
＜冷却ガス圧送装置＞
冷却ガス圧送装置７は、冷却ガスの流量を計測する冷却ガス流量計Ｆ１が設けられた圧送管２９を有し、冷却ガスを複数のトラフ台車５の下方に供給するためのものである。
圧送管２９の上流側には冷却ガスを圧送して供給するための供給ブロワ８が設けられ、その下流側は、図１に示すように、固定側環状エアダクト３１に接続され、固定側環状エアダクト３１は水封ボックス３３を介して可動側環状エアダクト３５と接続され、可動側環状エアダクト３５は連結エアダクト３７を介して内側側壁２１に接続されている。
<Cooling gas pumping device>
The cooling gas pumping device 7 has a pumping pipe 29 provided with a cooling gas flow meter F<b>1 for measuring the flow rate of the cooling gas, and is for supplying the cooling gas below the plurality of trough trucks 5 .
A supply blower 8 for pumping and supplying the cooling gas is provided on the upstream side of the pressure-feeding pipe 29, and the downstream side thereof is connected to a fixed-side annular air duct 31 as shown in FIG. 31 is connected to a movable-side annular air duct 35 via a water seal box 33 , and the movable-side annular air duct 35 is connected to the inner side wall 21 via a connecting air duct 37 .
圧送管２９から固定側環状エアダクト３１に供給された冷却ガスは、水封ボックス３３によってシールされて可動側環状エアダクト３５、連結エアダクト３７を介して風箱２５に供給される。 The cooling gas supplied from the pressure feed pipe 29 to the fixed side annular air duct 31 is sealed by the water sealing box 33 and is supplied to the wind box 25 via the movable side annular air duct 35 and the connecting air duct 37 .
圧送管２９に設けられた冷却ガス流量計Ｆ１の計測値は、制御装置１１に入力される。 A measurement value of the cooling gas flow meter F1 provided in the pressure feed pipe 29 is input to the control device 11 .
＜排気ガス吸引装置＞
排気ガス吸引装置９は、排気ガスの流量を計測する排気ガス流量計Ｆ２が設けられた排気管４１を有し、フード１３で覆われた空間から排気ガスを吸引して外部に排出するためのものである。排気管４１には、排気ガスの流量を調整する流量調整弁３９が設けられている。
排気管４１の下流側には排気ガスを吸引して排出するための排出ブロワ１０が設けられている。排気管４１に設けられた排気ガス流量計Ｆ２の計測値も、制御装置１１に入力される。
<Exhaust gas suction device>
The exhaust gas suction device 9 has an exhaust pipe 41 provided with an exhaust gas flow meter F2 for measuring the flow rate of the exhaust gas, and sucks the exhaust gas from the space covered by the hood 13 and discharges it to the outside. It is. The exhaust pipe 41 is provided with a flow rate control valve 39 for adjusting the flow rate of the exhaust gas.
A discharge blower 10 for sucking and discharging the exhaust gas is provided downstream of the exhaust pipe 41 . A measurement value of the exhaust gas flow meter F2 provided in the exhaust pipe 41 is also input to the control device 11 .
＜制御装置＞
制御装置１１は、冷却ガスの流量が排気ガスの流量よりも小さくなるように流量調整弁３９を制御するよう構成されている。
具体的には、流量計Ｆ１、Ｆ２の計測値を入力し、その計測値に基づいて、排気管４１を流れる排気ガスの流量が圧送管２９から供給される冷却ガス流量よりも大きくなるように流量調整弁３９を制御する。
<Control device>
The control device 11 is configured to control the flow control valve 39 so that the flow rate of the cooling gas becomes smaller than the flow rate of the exhaust gas.
Specifically, the measured values of the flowmeters F1 and F2 are input, and based on the measured values, the flow rate of the exhaust gas flowing through the exhaust pipe 41 is adjusted to be greater than the flow rate of the cooling gas supplied from the pressure feed pipe 29. It controls the flow control valve 39 .
集塵装置等を介してフード１３内の排気ガスを吸引する場合、フード１３に接続する配管から離れたエリアでは排気ガスの吸引力が弱く、フード内圧力が大気圧より高くなるとガスや粉塵が漏洩する条件となりやすい。
そこで、制御装置１１によって、冷却ガスの流量が排気ガスの流量よりも小さくなるように流量調整弁３９とを制御することで、フード内圧力が大気圧より低くすることができる。
When the exhaust gas inside the hood 13 is sucked through a dust collector or the like, the suction force of the exhaust gas is weak in an area distant from the pipes connected to the hood 13, and gas and dust are generated when the pressure inside the hood becomes higher than the atmospheric pressure. Leakage conditions are likely to occur.
Therefore, the control device 11 controls the flow rate adjustment valve 39 so that the flow rate of the cooling gas becomes lower than the flow rate of the exhaust gas, whereby the pressure in the hood can be made lower than the atmospheric pressure.
以上のように構成された本実施の形態の焼結鉱冷却機の給排気装置３によれば、トラフ台車５とフード１３との間の空間全体を安定して負圧に維持することが容易となり、経年劣化等でトラフ台車５の側壁２１、２３が沈んだり変形したりしてシール機構のシール効果が低下し、トラフ台車５とフード１３の間に隙間が発生した場合にも、トラフ台車５側（可動側）とフード１３側（固定側）との間のシール部分からガスや粉塵が系外に漏洩することを防止することができる。 According to the air supply/exhaust device 3 of the sinter cooler of the present embodiment configured as described above, it is easy to stably maintain the entire space between the trough truck 5 and the hood 13 at a negative pressure. Therefore, even if the side walls 21 and 23 of the trough carriage 5 sink or deform due to aged deterioration, etc., the sealing effect of the sealing mechanism is reduced, and a gap is generated between the trough carriage 5 and the hood 13. It is possible to prevent gas and dust from leaking out of the system from the seal portion between the 5 side (movable side) and the hood 13 side (fixed side).
［変形例１］
経時変化によるトラフ台車５とフード１３の間の隙間の発生や拡大は、トラフ台車５に対して無作為に発生する可能性がある。
この場合、図２、図３に示すように、個々のトラフ台車５または複数のトラフ台車５からなるトラフ台車群ごとに、フード１３で覆われた空間内の圧力を測定するための圧力計Ｐと流量調整弁３９とを設け、圧力計Ｐの計測値である圧力値を制御装置１１に入力し、フード１３で覆われた空間内の圧力が大気圧以上となった箇所（トラフ台車群）について、流量調整弁３９を調整して、排気ガスの流量を大きくする。これによって、ピンポイントで漏洩を防止することができ、より経済的となる。
また、各フード１３から集められた排気ガス流量の総量が、（排気ガス流量の総量）＞（冷却ガス流量）の関係を満たさない場合は、大気圧とフード１３内圧との圧力差（大気圧―フード１３内圧）が小さいものから排ガス流量調整弁の開度を大きくすることが好ましい。
[Modification 1]
The occurrence or expansion of the gap between the trough truck 5 and the hood 13 due to changes over time may occur randomly with respect to the trough truck 5 .
In this case, as shown in FIGS. 2 and 3, a pressure gauge P for measuring the pressure in the space covered by the hood 13 is provided for each trough carriage 5 or for each trough carriage group consisting of a plurality of trough carriages 5. and a flow control valve 39 are provided, the pressure value, which is the measurement value of the pressure gauge P, is input to the control device 11, and the pressure in the space covered by the hood 13 exceeds the atmospheric pressure (trough truck group) , the flow control valve 39 is adjusted to increase the flow rate of the exhaust gas. This makes it possible to pinpoint leakage prevention and is more economical.
Further, if the total amount of exhaust gas flow collected from each hood 13 does not satisfy the relationship of (total amount of exhaust gas flow)>(cooling gas flow), the pressure difference between the atmospheric pressure and the internal pressure of the hood 13 (atmospheric pressure - It is preferable to increase the opening degree of the exhaust gas flow rate control valve from the one with the smaller hood 13 internal pressure.
［変形例２］
冷却ガスの流量に比べて排気ガスの流量が過多になると、フード１３で覆われた空間内と外部との間の圧力差が大きくなり、シール部分の変形や外部空気の吸い込み、機器変形の可能性がある。また、シール部分から外部空気の吸い込みが大きくなると、排熱回収温度が低下し、ボイラーでの熱交換に支障をきたす。
そこで、図４に示すように、フード１３で覆われた空間内に空気を取り込むガス流入管４３をフード１３に設けることにより、排気ガス流量が一時的に過多となった際にガス流入管４３から外気空気を積極的に吸い込み、フード１３内外の圧力差を低減させ、フード１３内を常に大気圧に近い状態に維持することができる。
[Modification 2]
If the flow rate of the exhaust gas becomes excessive compared to the flow rate of the cooling gas, the pressure difference between the inside of the space covered by the hood 13 and the outside becomes large, which may cause deformation of the sealing portion, intake of outside air, and deformation of the equipment. have a nature. In addition, when the amount of outside air sucked through the seal portion increases, the exhaust heat recovery temperature decreases, hindering heat exchange in the boiler.
Therefore, as shown in FIG. 4, by providing the hood 13 with a gas inflow pipe 43 that takes in air into the space covered by the hood 13, the gas inflow pipe 43 By actively sucking outside air from the hood 13, the pressure difference between the inside and outside of the hood 13 can be reduced, and the inside of the hood 13 can always be maintained in a state close to the atmospheric pressure.
ガス流入管４３を設ける場合、ガス流入管４３における一定以上の長さをフード１３内に収められるようにすることで、流入した外部空気がフード１３内に収められたガス流入管４３内を流れる過程で加熱され、排気ガスの温度低下を抑制することができる。
ガス流入管４３の内径、フード１３内の部分の長さ及び肉厚のそれぞれが所定の範囲内の寸法であることが望ましく、例えば、内径：0.1～0.5m、フード１３内の部分の長さ：0.5m以上、肉厚5mm以上といった範囲内の寸法に設定することが望ましい。内径が小さいすぎると管流入時の圧力損失が増大し、大きすぎると瞬間的に排気ガス温度の低下を招く恐れがある。また、フード１３内の部分の長さが短いと流入した外部空気が十分に加熱されない。また、一定程度以上の肉厚を有することで、ガス流入管４３を流れる空気の流量が小さい通常運転の間に熱を溜めておく熱容量が確保でき、ガス流入管４３からの外部空気の流入量が増大した際のフード１３で覆われた空間内の温度低下を抑制する効果が大きくなる。尚、流入管４３のフード１３内の部分の長さや肉厚の上限は、流入管４３の内径に応じて重量等を勘案して妥当な範囲とする。
また、ガス流入管４３の吸い込み側先端にフードで覆われた空間から外部に向かう方向のガスの流れを防ぐ逆止弁４５やサイクロン（図示なし）を設置する等して、フード１３内圧力が局所的に変動した時にも系外へのガスや粉塵の漏洩が防止されるようにしてもよい。
When the gas inflow pipe 43 is provided, the length of the gas inflow pipe 43 over a certain length can be accommodated in the hood 13, so that the external air that has flowed in flows through the gas inflow pipe 43 that is accommodated in the hood 13. It is heated in the process and can suppress the temperature drop of the exhaust gas.
It is desirable that the inner diameter of the gas inflow pipe 43, the length of the portion inside the hood 13, and the wall thickness are each within a predetermined range. : It is desirable to set the dimensions within the range of 0.5m or more and the wall thickness of 5mm or more. If the inner diameter is too small, the pressure loss at the time of inflow into the pipe increases, and if it is too large, the temperature of the exhaust gas may drop momentarily. Also, if the length of the portion inside the hood 13 is short, the inflowing outside air is not sufficiently heated. In addition, by having a certain thickness or more, it is possible to secure heat capacity for storing heat during normal operation when the flow rate of air flowing through the gas inflow pipe 43 is small, and the inflow amount of external air from the gas inflow pipe 43 can be secured. The effect of suppressing the temperature drop in the space covered by the hood 13 when the .DELTA. Note that the upper limits of the length and thickness of the portion of the inflow pipe 43 inside the hood 13 are set to appropriate ranges in consideration of the weight and the like according to the inner diameter of the inflow pipe 43 .
In addition, by installing a check valve 45 or a cyclone (not shown) at the end of the suction side of the gas inflow pipe 43 to prevent the flow of gas from the space covered by the hood toward the outside, the pressure inside the hood 13 is reduced. Gas or dust may be prevented from leaking out of the system even when there is a local fluctuation.
［変形例３］
トラフ台車５の下部のシール部分は、冷却ガスの漏風を完全に防止することができない。特に機器の経時劣化とともに冷却ガスの漏風が顕著となる。
そこで、冷却ガスの漏洩量を加味して、（排気ガス流量）≧（冷却ガス流量）－（漏風量）となるように制御することにより、排気ガス流量の最小値を小さくできる。これによって、排気ガス流量を低減することができ、排気ブロワ等の電力費の低減に繋がり、より経済的となる。
[Modification 3]
The sealing portion at the bottom of the trough truck 5 cannot completely prevent leakage of the cooling gas. In particular, leakage of cooling gas becomes noticeable as equipment deteriorates over time.
Therefore, the minimum value of the exhaust gas flow rate can be reduced by controlling the leakage amount of the cooling gas so that (exhaust gas flow rate)≧(cooling gas flow rate)−(leakage air rate). As a result, the flow rate of the exhaust gas can be reduced, which leads to a reduction in the power cost of the exhaust blower and the like, making it more economical.
漏風量は、既知のデータから冷却ガス流量や圧力等を変数とする演算式から算出してもよく、また、図５に示すように、シール部等の漏洩箇所に風速計４７を設けて風速を測定し、測定値を制御装置１１に入力して、風速を漏風量に換算してもよい。
いずれにしても、制御装置１１によって漏風量に基づいて、（排気ガスの流量）≧（冷却ガスの流量）－（漏風量）の関係を満たすように排気ガス流量調整弁３９を制御するよう構成する。
The amount of leaked air may be calculated from known data using an arithmetic expression using the cooling gas flow rate, pressure, etc. as variables. Alternatively, as shown in FIG. may be measured, the measured value may be input to the control device 11, and the wind speed may be converted into the amount of leaked air.
In any case, the control device 11 is configured to control the exhaust gas flow rate adjustment valve 39 based on the amount of leakage air so as to satisfy the relationship of (flow rate of exhaust gas)≧(flow rate of cooling gas)−(leakage amount of air). do.
以上、本発明を実施形態及び変形例を用いて説明してきたが、本発明はこれらの実施形態や変形例の構成には限られない。本発明の範囲は添付の特許請求の範囲の記載に基づいて定まるものであり、その範囲内において実施形態や変形例に示した構成要素の一部の省略や変形、またそれらの改良を施した構成の全てが本発明に含まれる。 Although the present invention has been described using the embodiments and modifications, the present invention is not limited to the configurations of these embodiments and modifications. The scope of the present invention is determined based on the description of the appended claims. All configurations are included in the present invention.
例えば、上記の実施形態においては、流量調整弁３９を排気管４１のみに設けているが、流量調整弁は圧送管に設けてもよく、また、圧送管と排気管の両方に設けてもよい。 For example, in the above embodiment, the flow control valve 39 is provided only in the exhaust pipe 41, but the flow control valve may be provided in the pressure feed pipe, or may be provided in both the pressure feed pipe and the exhaust pipe. .
また、上記の実施形態においては、制御装置１１は排気ガス吸引装置９（流量調整弁３９）のみを制御するよう構成されているが、本発明においては、制御装置は、冷却ガスの流量が排気ガスの流量よりも小さくなるように、冷却ガス圧送装置を制御するよう構成されていても良く、また冷却ガス圧送装置及び排気ガス吸引装置の両方を制御するよう構成されていてもよい。 Further, in the above embodiment, the control device 11 is configured to control only the exhaust gas suction device 9 (flow control valve 39), but in the present invention, the control device controls the flow rate of the cooling gas to the exhaust gas. It may be configured to control the cooling gas pumping device so as to be smaller than the gas flow rate, or may be configured to control both the cooling gas pumping device and the exhaust gas suction device.
また、上記の実施形態においては、圧送管に冷却ガス流量計を設け、排気管に排気ガス流量計を設け、これらの計測値に基づいて流量調整弁を制御することで、高精度な制御を実現する好ましい形態を示したが、本発明においては、制御装置は、冷却ガスの流量が排気ガスの流量よりも小さくなるように、供給ブロワ及び排出ブロワのうちの少なくともいずれか一方を制御するよう構成されていてもよい。 Further, in the above embodiment, the cooling gas flowmeter is provided in the pressure feed pipe, the exhaust gas flowmeter is provided in the exhaust pipe, and the flow control valve is controlled based on these measured values, thereby performing highly accurate control. Although a preferred mode of implementation has been shown, in the present invention, the control device controls at least one of the supply blower and the discharge blower so that the flow rate of the cooling gas is less than the flow rate of the exhaust gas. may be configured.
１ 焼結鉱冷却機
３ 給排気装置
５ トラフ台車
７ 冷却ガス圧送装置
８ 供給ブロワ
９ 排気ガス吸引装置
１０ 排出ブロワ
１１ 制御装置
１３ フード
１５ 焼結鉱
１７ 車輪
１９ トラフ
２１ 内側側壁
２３ 外側側壁
２５ 風箱
２７ 通気板
２８ シール機構
２９ 圧送管
３１ 固定側環状エアダクト
３３ 水封ボックス
３５ 可動側環状エアダクト
３７ 連結エアダクト
３９ 流量調整弁
４１ 排気管
４３ ガス流入管
４５ 逆止弁
４７ 風速計
Ｆ１、Ｆ２ 流量計
Ｐ 圧力計
1 sintered ore cooler 3 air supply and exhaust device 5 trough truck 7 cooling gas pumping device 8 supply blower 9 exhaust gas suction device 10 discharge blower 11 control device 13 hood 15 sintered ore 17 wheel 19 trough 21 inner side wall 23 outer side wall 25 wind Box 27 Ventilation plate 28 Seal mechanism 29 Pressure feed pipe 31 Fixed side annular air duct 33 Water sealing box 35 Movable side annular air duct 37 Connection air duct 39 Flow control valve 41 Exhaust pipe 43 Gas inflow pipe 45 Check valve 47 Anemometer F1, F2 Flow meter P pressure gauge
Claims (7)
前記冷却ガスを前記複数のトラフ台車の下方に供給するための冷却ガス圧送装置と、
前記フードで覆われた空間から排気ガスを吸引して外部に排出するための排気ガス吸引装置と、
前記冷却ガスの流量が前記排気ガスの流量よりも小さくなるように、前記冷却ガス圧送装置及び前記排気ガス吸引装置のうちの少なくともいずれか一方を制御するよう構成された制御装置と、
を備えることを特徴とする焼結鉱冷却機の給排気装置。 Sintered ore sintered by a sintering machine is stacked on a plurality of trough carriages at least a part of which is covered with a hood, and the sintered ore layer is cooled while moving the plurality of trough carriages. An air supply and exhaust device for a sintered ore cooler that continuously cools the sintered ore by passing gas through it,
a cooling gas pumping device for supplying the cooling gas below the plurality of trough trucks;
an exhaust gas suction device for sucking exhaust gas from the space covered by the hood and discharging it to the outside;
a control device configured to control at least one of the cooling gas pumping device and the exhaust gas suction device such that the flow rate of the cooling gas is smaller than the flow rate of the exhaust gas;
An air supply and exhaust device for a sinter cooler, comprising:
前記排気ガス吸引装置は、前記排気ガスの流量を計測する排気ガス流量計が設けられた排気管を有し、
前記圧送管と前記排気管のうちの少なくともいずれか一方に流量調整弁が設けられており、
前記制御装置は、前記冷却ガス流量計の計測値及び前記排気ガス流量計の計測値に基づいて、前記流量調整弁を制御するよう構成されていることを特徴とする請求項１に記載の焼結鉱冷却機の給排気装置。 The cooling gas pumping device has a pumping pipe provided with a cooling gas flow meter for measuring the flow rate of the cooling gas,
The exhaust gas suction device has an exhaust pipe provided with an exhaust gas flow meter for measuring the flow rate of the exhaust gas,
At least one of the pressure feed pipe and the exhaust pipe is provided with a flow rate adjustment valve,
2. The burner according to claim 1, wherein the control device is configured to control the flow control valve based on the measured value of the cooling gas flow meter and the measured value of the exhaust gas flow meter. Air supply/exhaust system for ore cooler.
前記制御装置は、前記圧力計から得られた圧力値に基づいて、フードで覆われた空間内の圧力が大気圧以上となった前記トラフ台車群について、前記排気ガスの流量を大きくするように前記流量調整弁を制御するよう構成されていることを特徴とする請求項１～３のいずれか一項に記載の焼結鉱冷却機の給排気装置。 A pressure gauge for measuring the pressure in the space covered by the hood and the flow control valve are provided for each trough truck group consisting of at least one of the plurality of trough trucks,
Based on the pressure value obtained from the pressure gauge, the control device increases the flow rate of the exhaust gas for the trough truck group in which the pressure in the space covered by the hood has reached the atmospheric pressure or higher. The air supply/exhaust system for a sinter cooler according to any one of claims 1 to 3, characterized in that it is configured to control the flow control valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022023395A JP2023120488A (en) | 2022-02-18 | 2022-02-18 | Intake/exhaust device of sintered ore cooling machine |
| PCT/JP2023/004676 WO2023157779A1 (en) | 2022-02-18 | 2023-02-13 | Air supply/exhaust device for sintered ore cooling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022023395A JP2023120488A (en) | 2022-02-18 | 2022-02-18 | Intake/exhaust device of sintered ore cooling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2023120488A true JP2023120488A (en) | 2023-08-30 |
Family
ID=87578154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022023395A Pending JP2023120488A (en) | 2022-02-18 | 2022-02-18 | Intake/exhaust device of sintered ore cooling machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2023120488A (en) |
| WO (1) | WO2023157779A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58739B2 (en) * | 1979-04-28 | 1983-01-07 | 日本鋼管株式会社 | Method for recovering sintered ore cooling waste gas |
| JPS59117668U (en) * | 1983-01-27 | 1984-08-08 | 新日本製鐵株式会社 | Sintered ore cooler |
| JPH08247660A (en) * | 1995-03-09 | 1996-09-27 | Nkk Corp | Air seal device of cooling machine of hot granular material |
| JP5659981B2 (en) * | 2011-07-25 | 2015-01-28 | 新日鐵住金株式会社 | Control method of exhaust heat recovery equipment in sinter cooler |
| JP2022006787A (en) * | 2020-06-25 | 2022-01-13 | スチールプランテック株式会社 | Cooling machine for sintered ore |
-
2022
- 2022-02-18 JP JP2022023395A patent/JP2023120488A/en active Pending
-
2023
- 2023-02-13 WO PCT/JP2023/004676 patent/WO2023157779A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023157779A1 (en) | 2023-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8622716B2 (en) | Oil-cooled air compressor | |
| JP5319964B2 (en) | AIR SUPPLY DEVICE AND HIGH-TEMPERATURE POWDER COOLING EQUIPMENT HAVING THE AIR SUPPLY DEVICE | |
| WO2023157779A1 (en) | Air supply/exhaust device for sintered ore cooling machine | |
| CN107486556A (en) | A kind of metal 3D printing equipment | |
| JPS6018287B2 (en) | Cooling device for plastic molds | |
| JP5738211B2 (en) | Disk axis adjustment mechanism in gas turbine | |
| CN101319789B (en) | Heat recovering device | |
| JP2010528249A (en) | System for dry recovery / cooling of inhomogeneous material ash including control of air intake in the combustion chamber | |
| JP3498973B2 (en) | Leak detection method for sintering machine | |
| JP2014167262A (en) | Hydraulic oil temperature control device | |
| CN115512677B (en) | Noise-reducing and wind-distributing device for air conditioner of rail train | |
| JPH0748611A (en) | Method for preventing clogging of piping for carrying powder | |
| CN203451587U (en) | Vertical cooling kiln | |
| CN207330974U (en) | A kind of flow regulator of blast furnace material distribution chute controller nitrogen-sealed system | |
| JP5738214B2 (en) | Disk axis adjustment mechanism in gas turbine | |
| US20150040806A1 (en) | Method for transporting impurities in pressurized fluidized furnace system | |
| CN103375266B (en) | The method of the air inlet pressure drop of combustion gas turbine and its gas handling system and control gas handling system | |
| CN106556208A (en) | Low tension outlet environment-support system under a kind of forced circulation flox condition | |
| CN209494923U (en) | A kind of novel axle journal sealing device | |
| CN114739190B (en) | Sealing device between trolley baffle plate and sealing cover of annular cooler and control method of sealing device | |
| EP0942151B1 (en) | Cooling structure around L-shaped vertical type gas turbine output shaft | |
| JP2783508B2 (en) | Oil tank exhaust system | |
| JP4990642B2 (en) | Bed density optimization method and bed density optimization system of fluidized medium in pressurized fluidized bed boiler | |
| CN216925167U (en) | Resistance balancer and double-pipe air box system | |
| CN217464936U (en) | Temperature adjusting device and vehicle |