JP2003206486A - Method for burning gas of coke oven - Google Patents
Method for burning gas of coke ovenInfo
- Publication number
- JP2003206486A JP2003206486A JP2002007233A JP2002007233A JP2003206486A JP 2003206486 A JP2003206486 A JP 2003206486A JP 2002007233 A JP2002007233 A JP 2002007233A JP 2002007233 A JP2002007233 A JP 2002007233A JP 2003206486 A JP2003206486 A JP 2003206486A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- combustion
- air
- coke oven
- chamber
- 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.)
- Granted
Links
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
Landscapes
- Incineration Of Waste (AREA)
- Coke Industry (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はコークス炉のガス燃
焼方法に関し、さらに詳しくはコークス炉の燃焼排ガス
から微細なダストを除去する技術に関する。TECHNICAL FIELD The present invention relates to a gas combustion method for a coke oven, and more particularly to a technique for removing fine dust from the combustion exhaust gas of the coke oven.
【０００２】[0002]
【従来の技術】コークス炉は燃焼室と炭化室が１枚のレ
ンガで仕切られている。コークス炉の老朽化に伴い、こ
のレンガの目地が切れ、この目地切れ部を通って炭化室
から燃焼室へ発生ガスが漏洩する。漏洩したガスにより
燃焼室の空燃比が乱れ、不完全燃焼により煤が生じる。
この煤がそのまま煙突から排出されると煙突黒煙とな
り、環境上問題である。なお、このような煙突黒煙は、
炭化室内圧力が上昇する石炭装入直後に発生する。2. Description of the Related Art In a coke oven, a combustion chamber and a carbonization chamber are separated by one brick. With the deterioration of the coke oven, the joint of this brick is cut, and the generated gas leaks from the carbonization chamber to the combustion chamber through the joint cut portion. The leaked gas disturbs the air-fuel ratio of the combustion chamber, resulting in soot due to incomplete combustion.
If this soot is directly discharged from the chimney, it becomes black smoke in the chimney, which is an environmental problem. In addition, such chimney black smoke,
It occurs immediately after charging coal, where the pressure in the carbonization chamber rises.
【０００３】この煙突黒煙に対し、煙突の上流側に煙道
集塵機を設ける対策がある。この対策では、煙突黒煙の
発生はゼロになるものの、投資額が膨大であるという問
題点がある。For this black smoke from the chimney, there is a measure to install a flue dust collector upstream of the chimney. With this measure, black smoke from the chimney will be reduced to zero, but the amount of investment will be enormous.
【０００４】これに対し、特開平０６−０６３３３４号
公報では、コークス炉の廃気弁の下流側で、新設の集塵
系と既設の煙道系に分岐させ、装入窯の排ガスのみを集
塵機に導くようにしたものである。このようにすれば、
新設の集塵ダクトを小径化することができ、集塵機も小
型化できるので、コスト的には安価になる。しかし、廃
気弁の下流側にスペースがない場合は、集塵系と煙道系
の切替ダンパと集塵ダクトを設置することができない。
また、多くの門数から構成される炉団では、切替ダンパ
の個数が多くなるため、総体的に考えると必ずしも安価
になるとは限らない。On the other hand, in Japanese Unexamined Patent Publication No. 06-063334, a new dust collecting system and an existing flue system are branched on the downstream side of the exhaust gas valve of the coke oven, and only the exhaust gas of the charging kiln is collected. It is intended to lead to. If you do this,
Since the diameter of the newly installed dust collecting duct can be reduced and the dust collector can be downsized, the cost can be reduced. However, if there is no space on the downstream side of the exhaust gas valve, it is not possible to install the dust collection system / flue system switching damper and the dust collection duct.
Further, in a furnace group composed of a large number of gates, the number of switching dampers is large, so that it is not always cheaper as a whole.
【０００５】他の従来技術としては、特開平０６−２５
６７６４号公報に開示されているように、石炭装入時に
装入窯に隣接する燃焼室への燃料ガス流量をコントロー
ルすることによって、漏洩ガスを燃焼させる技術があ
る。このようにすれば、漏洩ガスは燃焼するものの、空
気過剰な状態を長く続けると、レンガの目地に入ってい
るカーボンも燃焼してしまい、目地切れを助長してしま
う。このように、効果はあるが、漏洩ガスを燃焼させる
だけの空気比になるように燃料ガス流量をコントロール
することは非常に難しい。Another prior art is Japanese Patent Laid-Open No. 06-25.
As disclosed in Japanese Patent No. 6764, there is a technique for burning leak gas by controlling the flow rate of fuel gas to a combustion chamber adjacent to a charging kiln when charging coal. In this way, although the leaked gas burns, if the excess air state continues for a long time, the carbon contained in the joints of the bricks also burns, which promotes the breakage of the joints. Thus, although effective, it is very difficult to control the fuel gas flow rate so that the air ratio is sufficient to burn the leaked gas.
【０００６】さらに、他の従来技術である特開平１０−
１６８４５９号公報では、炉上の燃焼室覗き穴から空気
を吹き込み、漏洩ガスを燃焼させる技術が開示されてい
る。これも同様な理由で吹き込み空気の流量コントロー
ルが非常に難しい。Further, another conventional technique, Japanese Patent Laid-Open No. 10-
Japanese Patent No. 168459 discloses a technique in which air is blown from a peep hole in a combustion chamber on a furnace to burn a leak gas. For this reason as well, it is very difficult to control the flow rate of the blown air.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、簡単な操作
によって、燃焼室の目地に付着した炭素を焼失させるこ
となく、燃焼ガス中の黒煙となる微細な炭素を効果的に
除去することができる、好適なコークス炉のガス燃焼方
法を提供することを目的とする。SUMMARY OF THE INVENTION According to the present invention, it is possible to effectively remove fine carbon which becomes black smoke in a combustion gas by a simple operation without burning the carbon adhering to the joint of the combustion chamber. It is an object of the present invention to provide a suitable coke oven gas combustion method capable of achieving the above.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記課題を解
決するためになされたもので、コークス炉の燃焼室にお
けるガス燃焼方法であって、石炭を装入する炭化室の両
隣にある燃焼室の、廃気側の富ガス供給路より空気を供
給することを特徴とするコークス炉のガス燃焼方法であ
る。この場合に、前記炭化室への石炭装入開始から少な
くとも１０分間、廃気側の富ガス供給路より空気を供給
することとすれば好適である。The present invention has been made to solve the above-mentioned problems, and is a method for gas combustion in a combustion chamber of a coke oven, in which combustion is provided on both sides of a coal-charging chamber. A gas combustion method for a coke oven, characterized in that air is supplied from a rich gas supply passage on the exhaust gas side of the chamber. In this case, it is preferable to supply air from the rich gas supply path on the waste air side for at least 10 minutes after the start of charging the coal into the carbonization chamber.
【０００９】[0009]
【発明の実施の形態】以下、図面を参照して、カールス
チル式コークス炉を例にとって本発明の実施の形態を説
明する。２分割式のカールスチル式コークス炉において
は、コークス炉のほぼ中央で、押出機側（マシンサイ
ド）と消火車側（コークスサイド）に蓄熱室及び燃焼室
が２分割されている。燃料ガスの燃焼は一定時間（２０
〜３０分）の燃焼を押出機側と消火車側とで交互に繰り
返している。なお、室炉式コークス炉には燃料ガスと空
気の流通経路を様々に変形した各種タイプの炉、例え
ば、コッパース式、オットー式等が使用されている。い
ずれのタイプの炉でも、燃料ガスとしてコークス炉ガス
（Ｃガス）（富ガス）を使用する富ガス燃焼を行う単式
炉と、富ガス燃焼と燃料ガスとしてコークス炉ガスと高
炉ガスを混合した混合ガス（Ｍガス）（貧ガス）を使用
することもできる複式炉とがある。いずれの炉において
も富ガス（コークス炉ガス：Ｃガス）を燃焼するための
富ガス供給路がある。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings, using a Karlstil type coke oven as an example. In the two-division type Karlstil type coke oven, the heat storage chamber and the combustion chamber are divided into two on the extruder side (machine side) and the fire extinguisher side (coke side) at approximately the center of the coke oven. Burning of fuel gas takes a certain time (20
Combustion for 30 minutes) is alternately repeated on the extruder side and the fire extinguisher side. As the chamber furnace type coke oven, various types of furnaces in which the flow paths of fuel gas and air are variously modified, for example, Coppers type and Otto type are used. In any type of furnace, a single-type furnace that performs rich gas combustion using coke oven gas (C gas) (rich gas) as fuel gas, and a mixture of coke oven gas and blast furnace gas as rich gas combustion and fuel gas There is a dual furnace in which gas (M gas) (poor gas) can also be used. In each of the furnaces, there is a rich gas supply path for burning rich gas (coke oven gas: C gas).
【００１０】例えば複式コークス炉１０は、図１に示す
ように、燃料供給部１１、燃焼室２１、炭化室２４、蓄
熱室３１、廃気経路４１を備えている。燃料供給部１１
は炉の前後から交互に燃料を供給することができるよう
に、押出機側と消火車側にそれぞれＣガス配管１２、Ｍ
ガス配管１３が設けられている。炭化室２４と燃焼室２
１とは多数列が交互に隣接して炉団を形成しており、そ
の上面には石炭装入口２２、覗き穴２３が設けられてい
る。For example, the double coke oven 10 is provided with a fuel supply section 11, a combustion chamber 21, a carbonization chamber 24, a heat storage chamber 31, and a waste gas passage 41, as shown in FIG. Fuel supply unit 11
So that the fuel can be supplied alternately from the front and rear of the furnace, C gas pipes 12 and M are provided on the extruder side and the fire engine side, respectively.
A gas pipe 13 is provided. Carbonization chamber 24 and combustion chamber 2
1 and a plurality of rows are alternately adjacent to each other to form a furnace group, and a coal charging port 22 and a peephole 23 are provided on the upper surface thereof.
【００１１】図１に例示されるように、室炉コークス炉
１０の燃焼室２１には燃料ガスと空気を流通する複雑な
流路が形成されている。燃焼排熱を利用するために、燃
焼室２１の下方に蓄熱室３１を設けてある。燃焼排ガス
はガス流３２で示すように蓄熱室３１内を経由して、蓄
熱室３１を形成するレンガに熱を伝え、その後、小煙道
４２、大煙道４３などの廃気経路４１を経て煙突４４か
ら外気に排出される。As illustrated in FIG. 1, the combustion chamber 21 of the chamber furnace coke oven 10 is formed with a complicated flow path for passing fuel gas and air. A heat storage chamber 31 is provided below the combustion chamber 21 in order to utilize combustion exhaust heat. The combustion exhaust gas passes through the inside of the heat storage chamber 31 as shown by a gas flow 32 to transfer heat to the bricks forming the heat storage chamber 31, and then through a waste air passage 41 such as a small smoke passage 42 and a large smoke passage 43. It is discharged from the chimney 44 to the outside air.
【００１２】そして貧ガス（混合ガス：Ｍガス）燃焼時
には、Ｍガス配管に燃料ガスを送り、空気吸入口１４か
ら空気を送り、燃料ガスと燃焼用空気は別々に蓄熱室３
１を経由して高温のレンガと熱交換して昇温された後、
燃焼室２１内で合流し、燃焼する。こうして燃焼ガスの
顕熱を有効に利用することができる。When the poor gas (mixed gas: M gas) is burned, the fuel gas is sent to the M gas pipe and the air is sent from the air intake port 14, and the fuel gas and the combustion air are separately stored in the heat storage chamber 3.
After exchanging heat with the hot bricks via 1 to raise the temperature,
They merge and burn in the combustion chamber 21. In this way, the sensible heat of the combustion gas can be effectively used.
【００１３】一方、富ガス（コークス炉ガス：Ｃガス）
燃焼時には、燃焼用空気は空気吸入口１４から蓄熱室３
１に入り、ここで昇温されて燃焼室２１へ供給され、Ｃ
ガスは蓄熱室３１を経由せずに直接燃焼室２１のバーナ
へ供給される。ＣガスはＭガスに比べて発熱量が高いた
め予熱の必要はないし、また各種の炭化水素ガスを含ん
でおり、高温に保持すると分解して煤を生じる恐れがあ
るため、通常、予熱せずに燃焼させる。On the other hand, rich gas (coke oven gas: C gas)
At the time of combustion, the combustion air flows from the air intake port 14 to the heat storage chamber 3
1, the temperature is raised there and is supplied to the combustion chamber 21, where C
The gas is directly supplied to the burner of the combustion chamber 21 without passing through the heat storage chamber 31. Since C gas has a higher calorific value than M gas, it does not need to be preheated. Also, since it contains various hydrocarbon gases, it may decompose to form soot when kept at a high temperature, so normally it is not preheated. To burn.
【００１４】本発明に係るコークス炉１０では、廃気側
（煙突４４側）に配設された富ガス供給路（Ｃガス支管
１２ｂ）に、空気１５を送る経路が接続されている。本
発明では、貧ガス（混合ガス：Ｍガス）燃焼時には炭化
室２４の両隣にある燃焼室２１の下部にある廃気側の富
ガス供給支管１２ｂから空気１５を供給する。こうする
ことにより燃焼排ガス中に黒煙となる微細な炭素が混入
している場合においても、この微細な炭素を蓄熱室３１
中で燃焼させることが可能となる。本発明では廃気側の
燃焼室２１の下部で空気を供給し、微細な炭素を蓄熱室
３１内で燃焼焼失させるので、燃焼室２１の目地に存在
する炭素を燃焼させることがなく、レンガの目地切れを
助長させる心配はない。従って、空気の供給量を細かく
調整する必要はなく一定量を一定時間供給するという簡
単な操作によって微細な炭素を蓄熱室内で燃焼焼失させ
るという効果を達成することができる。In the coke oven 10 according to the present invention, a path for sending the air 15 is connected to the rich gas supply path (C gas branch pipe 12b) arranged on the waste air side (chimney 44 side). In the present invention, during combustion of the poor gas (mixed gas: M gas), the air 15 is supplied from the exhaust gas side rich gas supply branch pipes 12b below the combustion chambers 21 on both sides of the carbonization chamber 24. By doing so, even when fine carbon that becomes black smoke is mixed in the combustion exhaust gas, this fine carbon is stored in the heat storage chamber 31.
It becomes possible to burn inside. In the present invention, air is supplied in the lower part of the combustion chamber 21 on the waste air side, and fine carbon is burned and burned in the heat storage chamber 31, so carbon existing in the joint of the combustion chamber 21 is not burned, and There is no need to worry about promoting joint loss. Therefore, it is not necessary to finely adjust the supply amount of air, and the effect of burning and burning fine carbon in the heat storage chamber can be achieved by a simple operation of supplying a fixed amount for a fixed time.
【００１５】本発明では全窯の燃焼室２１で排気側の燃
焼室２１の下部へ空気を供給してもよい。こうすること
によって、炭化室２４から燃焼室２１ヘガスが漏洩する
ことにより発生する微細な炭素を確実に燃焼焼失させる
ことができる。炭化室２４から燃焼室２１へのガス漏洩
は、通常、炭化室２４へ石炭の装入を開始してから１０
分間がもっとも多く、それ以降は炭化室２４内での発生
ガス量がほぼ安定化し、炭化室２４から燃焼室２１への
ガス漏洩はほとんど無視できる程度となる。従って、そ
の後は、必ずしも廃気側燃焼室２１の下部へ空気を供給
する必要はない。以上の観点から排気側の燃焼室２１下
部への空気供給は、石炭を装入する窯の石炭装入開始時
から少なくとも１０分間とすることに限定してもよい。
こうすると、空気供給量を低減することができると共
に、微細な炭素がほとんど含まれていない排ガスを安定
的に排出することができる。In the present invention, air may be supplied to the lower part of the combustion chamber 21 on the exhaust side by the combustion chamber 21 of the entire kiln. By doing so, it is possible to surely burn and burn out the fine carbon generated by the gas leaking from the carbonization chamber 24 to the combustion chamber 21. The gas leakage from the carbonization chamber 24 to the combustion chamber 21 is usually 10 after the charging of the coal into the carbonization chamber 24 is started.
The period is the largest, and after that, the amount of gas generated in the carbonization chamber 24 is almost stabilized, and the gas leakage from the carbonization chamber 24 to the combustion chamber 21 is almost negligible. Therefore, after that, it is not always necessary to supply air to the lower portion of the exhaust gas side combustion chamber 21. From the above viewpoints, the air supply to the lower part of the combustion chamber 21 on the exhaust side may be limited to at least 10 minutes from the start of the coal charging of the kiln for charging the coal.
This makes it possible to reduce the amount of air supplied and also to stably discharge the exhaust gas containing almost no fine carbon.
【００１６】空気供給量は燃焼室からの煤塵の発生量と
排ガス中のＣＯガス濃度に応じて決定することができ
る。例えば排ガス流量がＶ［ｍ3（標準状態）／ｈ］、
排ガス中の煤塵濃度がα［ｍｇ／ｍ3（標準状態）］、
排ガス中のＣＯガス濃度がβ［体積％］の場合、煤塵が
すべて炭素と仮定すると、この煤塵とＣＯガスを燃焼す
るのに必要な空気量は、燃焼室１室当たり
（８．８９×１０-6＋２．３８×１０-2β）Ｖ［ｍ
3（標準状態）／ｈ］
で計算できる。これは理論値であるので、適宜過剰空気
比として１〜１．２程度の係数を掛けた数値に相当する
量を供給しても良い。The air supply amount can be determined according to the amount of soot dust generated from the combustion chamber and the CO gas concentration in the exhaust gas. For example, the exhaust gas flow rate is V [m 3 (standard state) / h],
The dust concentration in the exhaust gas is α [mg / m 3 (standard state)],
When the CO gas concentration in the exhaust gas is β [volume%], assuming that all the soot dust is carbon, the amount of air required to burn this soot dust and CO gas is (8.89 × 10 8) per combustion chamber. -6 + 2.38 × 10 -2 β) V [m
3 (standard state) / h] Since this is a theoretical value, an amount corresponding to a value obtained by multiplying the excess air ratio by a coefficient of about 1 to 1.2 may be appropriately supplied.
【００１７】煤塵の発生量と排ガス中のＣＯガス濃度は
図１に位置を示したガス採取管５１から排ガスを等速吸
引法でサンプリングし、このサンプリングガス中の煤塵
量とＣＯガス量から計算すればよい。また、簡便には煙
道集塵機入口側で各燃焼炉の排ガスが集合している位置
で等速吸引法によりサンプリングしたときの煤塵濃度、
排ガス中ＣＯ濃度を測定して使用してもよい。この場合
は煤塵濃度は各燃焼炉からの排ガスが集合しているとこ
ろでサンプリングしているが、煤塵の発生は炭化室への
石炭装入直後がもっとも多く、その後１０分程度で１／
１０以下程度まで低下するので、煙道集塵機入口で採取
される煤塵のほとんどは一つの炭化室に隣接する燃焼室
から発生しているものと考えても良いので、集塵機入口
での煤塵濃度に燃焼室の門数を掛けた数値が一つの燃焼
室から発生している煤塵濃度と考えて良い。The amount of generated dust and the concentration of CO gas in the exhaust gas are calculated from the amount of dust and CO gas in this sampling gas by sampling the exhaust gas from the gas sampling pipe 51 shown in FIG. 1 by the constant velocity suction method. do it. Also, simply, the dust concentration when sampling by the constant velocity suction method at the position where the exhaust gas of each combustion furnace gathers on the inlet side of the flue dust collector,
The CO concentration in the exhaust gas may be measured and used. In this case, the dust concentration was sampled at the point where the exhaust gas from each combustion furnace was gathered, but the dust generation was highest immediately after the coal was charged into the carbonization chamber, and then 1/10 minutes later.
Since it decreases to around 10 or less, it can be considered that most of the soot dust collected at the flue dust collector inlet is generated from the combustion chamber adjacent to one carbonization chamber, so it burns to the dust concentration at the dust collector inlet. It can be considered that the value obtained by multiplying the number of gates in the chamber is the dust concentration generated in one combustion chamber.
【００１８】本発明を実施するには、上記のように各燃
焼室からの煤塵発生量を測定し、これを基に前記式を用
いて空気送給量を決定することができる。このとき、煤
塵発生量は石炭装入開始時をピークとして漸減するが、
煙突からの黒煙の発生を防ぐために、このピーク時の煤
塵発生量を基に空気送給量を決定することが好ましい。To carry out the present invention, the amount of soot and dust generated from each combustion chamber is measured as described above, and the air supply amount can be determined based on this by using the above equation. At this time, the amount of soot and dust gradually decreases with a peak at the start of coal charging,
In order to prevent the generation of black smoke from the chimney, it is preferable to determine the air supply amount based on the peak dust generation amount.
【００１９】また、より簡便には煙突からの黒煙発生を
監視し、黒煙の発生が生じる場合にはその黒煙発生時点
における石炭装入窯に隣接する炭化室の空気送給を行う
ことができる。この場合には、空気送給量は煙突からの
黒煙に状態をみながら適宜調整すれば良い。Further, more simply, the black smoke generation from the chimney is monitored, and when the black smoke is generated, air is fed to the carbonization chamber adjacent to the coal charging kiln at the time of the black smoke generation. You can In this case, the air supply amount may be appropriately adjusted while observing the black smoke from the chimney.
【００２０】[0020]
【実施例】炭化室９２門を有するカールスチル式コーク
ス炉の操業に本発明を適応した。本発明の実施にあたっ
ては、石炭装入を行う炭化室の両側の燃焼室で廃気側の
富ガス供給路に空気を供給した。図２に石炭装入開始時
の排気ガス中の煤塵濃度を１としたときの、以後時間経
過に対応した排気ガス中の煤塵濃度の比率を推移図とし
て示す。なお、装入後経過時間で３０分の時点で燃焼室
の燃料ガスの供給を反対側へ切り替えたので、煤塵濃度
測定のサンプリングも反対側へ切り替えて、常に廃気側
の富ガス供給路でのサンプリングを行った。EXAMPLE The present invention was applied to the operation of a Karlstil type coke oven having 92 carbonization chambers. In carrying out the present invention, air was supplied to the exhaust gas side rich gas supply passage in the combustion chambers on both sides of the coal charging chamber. FIG. 2 is a transition diagram showing the ratio of the dust concentration in the exhaust gas corresponding to the passage of time, assuming that the dust concentration in the exhaust gas at the start of coal charging is 1. Since the supply of fuel gas in the combustion chamber was switched to the opposite side at the time of 30 minutes after the charging, the sampling for measuring the dust concentration was also switched to the opposite side, and the exhaust gas side rich gas supply path was always used. Was sampled.
【００２１】図２中に示す比較例は、従来と同様に廃気
側の富ガス供給路へ空気供給を行わずに燃焼を行い、廃
気側でサンプリングした結果を示す。The comparative example shown in FIG. 2 shows the result of performing combustion without supplying air to the rich gas supply passage on the waste air side and sampling on the waste air side as in the conventional case.
【００２２】図２から分かるように、石炭装入直後の煤
塵濃度は、比較例に比べて実施例では１／１０以下の煤
塵濃度となっており、本発明の効果による煤塵抑制が達
成されていることが分かる。また、従来の方法を行った
比較例において、石炭装入開始後１０分程度経過した時
点で煤塵濃度は石炭装入直後の１／１０程度に低下して
いることから、本発明において、富ガス供給路への空気
供給は石炭装入開始時からその１０分後までの範囲を含
む期間行えば、石炭装入時の煤塵発生を有効に低減でき
ることが分かる。図２に示す実施例は上記比較例の燃焼
室において、石炭装入開始時から６０分間、廃気側の富
ガス供給路から空気を２７０ｍ3（標準状態）／ｈ送給
した結果を示す。この実施例から本発明の実施により煤
塵濃度は比較例に比べてピーク時でも１／１０以下に低
減できていることが分かる。As can be seen from FIG. 2, the soot concentration immediately after charging the coal was 1/10 or less in the example as compared with the comparative example, and the soot suppression by the effect of the present invention was achieved. I know that Further, in the comparative example in which the conventional method is performed, the soot and dust concentration is reduced to about 1/10 immediately after the coal charging after about 10 minutes from the start of the coal charging. It can be seen that if air is supplied to the supply path for a period including the range from the start of coal charging to 10 minutes after that, the generation of soot and dust at the time of coal charging can be effectively reduced. The example shown in FIG. 2 shows the result of feeding air from the rich gas supply passage on the waste gas side at 270 m 3 (standard state) / h for 60 minutes from the start of coal charging in the combustion chamber of the comparative example. From this example, it can be seen that the concentration of soot and dust can be reduced to 1/10 or less at the peak time as compared with the comparative example by carrying out the present invention.
【００２３】[0023]
【発明の効果】本発明の適用により、コークス炉の燃焼
排ガスに混入する微細な炭素を、空気により燃焼させる
ことができ、煙道集塵機を使用せずとも煙突からの放出
粉塵量を極めて低レベルに保持することができる。しか
も、空気の供給量を細かく調整せずとも燃焼室内の目地
部に付着滞留している炭素を燃焼焼失することがないの
で、極めて簡便な制御で空気送給することが可能であ
る。EFFECTS OF THE INVENTION By applying the present invention, it is possible to burn fine carbon mixed in the combustion exhaust gas of the coke oven with air, and the amount of dust emitted from the chimney is extremely low without using a flue dust collector. Can be held at. Moreover, since carbon adhering to and staying at the joints in the combustion chamber is not burned and burned out without finely adjusting the supply amount of air, it is possible to supply air by extremely simple control.
【図１】実施例のコークス炉の説明図である。FIG. 1 is an explanatory diagram of a coke oven of an example.
【図２】排気ガス中の煤塵濃度比率の推移図である。FIG. 2 is a transition diagram of a dust concentration ratio in exhaust gas.
１０ カールスチル式コークス炉 １１ 燃料供給部 １２ Ｃガス配管 １２ｂ Ｃガス支管 １３ Ｍガス配管 １４ 空気吸入口 １５ 空気 ２１ 燃焼室 ２２ 石炭装入口 ２３ 覗き穴 ２４ 炭化室 ３１ 蓄熱室 ３２ ガス流 ４１ 廃気経路 ４２ 小煙道 ４３ 大煙道 ４４ 煙突 ５１ ガス採取管 10 Curl Still Coke Oven 11 Fuel supply section 12 C gas piping 12b C gas branch pipe 13 M gas pipe 14 Air inlet 15 air 21 Combustion chamber 22 Coal charging port 23 Peephole 24 Carbonization chamber 31 heat storage room 32 gas flow 41 Waste air route 42 small flue 43 Great flue 44 chimney 51 gas sampling tube
Claims (2)
法であって、石炭を装入する炭化室の両隣にある燃焼室
の、廃気側の富ガス供給路より空気を供給することを特
徴とするコークス炉のガス燃焼方法。1. A method of gas combustion in a combustion chamber of a coke oven, characterized in that air is supplied from a rich gas supply passage on the waste air side of the combustion chambers on both sides of a coal charging chamber. Coke oven gas combustion method.
とも１０分間、廃気側の富ガス供給路より空気を供給す
ることを特徴とする請求項１記載のコークス炉のガス燃
焼方法。2. The gas combustion method for a coke oven according to claim 1, wherein air is supplied from the rich gas supply passage on the waste air side for at least 10 minutes after the start of charging the coal into the carbonization chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002007233A JP3912115B2 (en) | 2002-01-16 | 2002-01-16 | Coke oven gas combustion method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002007233A JP3912115B2 (en) | 2002-01-16 | 2002-01-16 | Coke oven gas combustion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003206486A true JP2003206486A (en) | 2003-07-22 |
| JP3912115B2 JP3912115B2 (en) | 2007-05-09 |
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ID=27645796
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002007233A Expired - Fee Related JP3912115B2 (en) | 2002-01-16 | 2002-01-16 | Coke oven gas combustion method |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007045871A (en) * | 2005-08-08 | 2007-02-22 | Jfe Steel Kk | Method for burning soot dust in coke oven |
| JP2009046536A (en) * | 2007-08-15 | 2009-03-05 | Jfe Steel Kk | Method for adjusting temperature distribution of coke oven |
| JP7144712B1 (en) * | 2021-06-23 | 2022-09-30 | Ｊｆｅスチール株式会社 | Coke oven, method for adjusting temperature distribution of coke oven, method for operating coke oven, and method for producing coke |
| WO2022270193A1 (en) * | 2021-06-23 | 2022-12-29 | Ｊｆｅスチール株式会社 | Coke oven, method for regulating temperature distribution in coke oven, method for operating coke oven, and method for producing coke |
-
2002
- 2002-01-16 JP JP2002007233A patent/JP3912115B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007045871A (en) * | 2005-08-08 | 2007-02-22 | Jfe Steel Kk | Method for burning soot dust in coke oven |
| JP2009046536A (en) * | 2007-08-15 | 2009-03-05 | Jfe Steel Kk | Method for adjusting temperature distribution of coke oven |
| JP7144712B1 (en) * | 2021-06-23 | 2022-09-30 | Ｊｆｅスチール株式会社 | Coke oven, method for adjusting temperature distribution of coke oven, method for operating coke oven, and method for producing coke |
| WO2022270193A1 (en) * | 2021-06-23 | 2022-12-29 | Ｊｆｅスチール株式会社 | Coke oven, method for regulating temperature distribution in coke oven, method for operating coke oven, and method for producing coke |
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| Publication number | Publication date |
|---|---|
| JP3912115B2 (en) | 2007-05-09 |
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