JPH039988A - Operation of coke dry quencher - Google Patents
Operation of coke dry quencherInfo
- Publication number
- JPH039988A JPH039988A JP1144151A JP14415189A JPH039988A JP H039988 A JPH039988 A JP H039988A JP 1144151 A JP1144151 A JP 1144151A JP 14415189 A JP14415189 A JP 14415189A JP H039988 A JPH039988 A JP H039988A
- Authority
- JP
- Japan
- Prior art keywords
- amount
- coke
- gas
- chamber
- combustible gas
- 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
- 239000000571 coke Substances 0.000 title claims abstract description 84
- 239000007789 gas Substances 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002918 waste heat Substances 0.000 claims abstract description 12
- 239000011261 inert gas Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000112 cooling gas Substances 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 230000001351 cycling effect Effects 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はコークス乾式消火設備の導入空気量を制御する
操業方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operating method for controlling the amount of air introduced into a coke dry extinguishing equipment.
コークス乾式消火設備が導入された初期においては、冷
却ガスの成分の変動に応じて空気の吹込量を調整するた
め、コークス処理量やコークス炉の操業状況を参考にし
つつ感覚的に空気吹込み量調整用の希釈空気流量調節弁
を手動により開度調整していた。When coke dry extinguishing equipment was first introduced, in order to adjust the amount of air blown in accordance with changes in the components of the cooling gas, the amount of air blown was intuitively adjusted based on the amount of coke processed and the operational status of the coke oven. The opening of the dilution air flow control valve was adjusted manually.
その後、特開昭５２−８５２０３号公報では、廃熱ボイ
ラーへの入熱低下時に冷却室へ空気を導入して、充填コ
ークスを部分的に燃焼させる、ボイラー人熱制御方法が
提案されている。Subsequently, Japanese Patent Laid-Open No. 52-85203 proposes a boiler heat control method in which air is introduced into a cooling chamber to partially burn charged coke when the heat input to the waste heat boiler decreases.
特開昭６１−３７８９３号公報では、冷却室の上部に設
けられる予備室の上部に空気を加圧導入して、予備室内
の可燃性ガス、コークス微粉および灼熱コークスを部分
的に燃焼させ、この熱量を蒸気の形で回収する方法が提
案されている。In Japanese Patent Application Laid-open No. 61-37893, air is introduced under pressure into the upper part of a preliminary chamber provided at the upper part of the cooling chamber to partially burn combustible gas, fine coke powder, and scorching coke in the preliminary chamber. Methods have been proposed to recover heat in the form of steam.
これらは何れもボイラー人熱制御方法である。These are all boiler heat control methods.
特開昭６２−２３６８８７号公報は、冷却室上部の予備
室に設けたレベル計で予備室在庫レベルを測定し、この
信号とコークス炉よりの切出しコークス温度信号とコー
クス投入量子δ−ｊ値から、乾式消火設備からのコーク
ス切出し量を自動制御するものである。JP-A No. 62-236887 discloses that the inventory level in the preliminary chamber is measured with a level meter installed in the preliminary chamber at the upper part of the cooling chamber, and from this signal, the temperature signal of cut coke from the coke oven, and the coke input quantum δ-j value. , which automatically controls the amount of coke cut out from dry fire extinguishing equipment.
特開昭６３−３０８０９１号公報は、コークス炉の欠落
時間、置時間、装入コークス量、水分値、揮発分に基づ
いて、窯出し時のコークス顕然、含有ガス量、ガス成分
を予測計算し、これに基づき、乾式消火設備の物質収支
、熱収支計算を行い、これに基づいてコークス炉操業（
窯出し）や消火設備の循環ガス量、吹込空気量、吹込窯
素量、およびコークス量を制御するものである。JP-A No. 63-308091 discloses a predictive calculation of coke conspicuousness, gas content, and gas composition at the time of discharge from the kiln, based on the coke oven drying time, standing time, amount of coke charged, moisture value, and volatile content. Based on this, the material balance and heat balance of the dry fire extinguishing equipment are calculated, and coke oven operation (
It controls the amount of circulating gas, the amount of blown air, the amount of raw material blown into the kiln, and the amount of coke.
特開昭６１−１６８６９０号公報は、ボイラーから冷却
塔に入る冷却不活性ガスの成分、組成、温度を検出し、
酸素濃度を監視して、可熱分の燃焼に失火が起きない範
囲で、空気の吹込Ｊｊ量を最大に調整するものである。JP-A-61-168690 discloses a method for detecting the components, composition, and temperature of cooling inert gas entering a cooling tower from a boiler,
The oxygen concentration is monitored and the amount of air blown Jj is adjusted to the maximum within a range where misfire does not occur in the combustion of heatable components.
第２図は従来の供給空気導入量の制御の一例を示したも
ので、１は消火塔、２は予備室、３は冷却室、４は廃熱
ボイラー ８は送風機であり、５のガス分析計により可
燃性ガス量等を分析して、６の供給空気導入弁を制御す
る方法が一般的であった。Figure 2 shows an example of conventional control of the amount of supplied air introduced. 1 is a fire tower, 2 is a preliminary room, 3 is a cooling room, 4 is a waste heat boiler, 8 is a blower, and 5 is a gas analysis A common method was to analyze the amount of combustible gas using a meter and control the supply air intake valve 6.
コークス乾式消火設備は冷却室の上部に予備室を有する
乾式コークス消火塔、予備室の下方の循環ガス吸込部よ
り廃熱ボイラーへ不活性ガスを送る廃熱供給ダクト、廃
熱ボイラー、送風機、冷却室への冷却不活性ガス送風ダ
クトよりなっている。Coke dry fire extinguishing equipment consists of a dry coke fire extinguishing tower with a preliminary chamber above the cooling chamber, a waste heat supply duct that sends inert gas from the circulation gas suction section below the preliminary chamber to the waste heat boiler, a waste heat boiler, a blower, and a cooling It consists of a cooling inert gas duct into the room.
従来、この冷却不活性ガス送風ダクト部に設置された、
ガス分析計の可燃性ガス濃度が一定の低い値となるよう
に、循環ガス吸込部へ供給する空気量を自動的に制御す
るのが一般的な方法であったが、この方法では、ガス分
析時間に３０〜６０秒を要し、制御遅れが生じ、また、
灼熱コークスの装入ピッチ、予備室のコークス在庫量、
冷却室下部よりの排出コークス量等で可燃性ガス濃度が
変動するうえに、供給空気量が過剰となると、冷却不活
性ガス中に酸素が存在するようになり、爆発等の危険性
があるため、可燃性ガスが多い安全側で作業することに
なり、可燃性ガスを効率的に燃焼させて、可燃性ガスを
最小限となるように供給空気量を適性に制御する事がで
きなかった。Conventionally, this was installed in the cooling inert gas ventilation duct,
A common method was to automatically control the amount of air supplied to the circulating gas suction section so that the combustible gas concentration in the gas analyzer remained at a constant low value. It takes 30 to 60 seconds, causing a control delay, and
Charging pitch of scorching coke, amount of coke stock in preliminary room,
The concentration of flammable gas fluctuates depending on the amount of coke discharged from the lower part of the cooling chamber, and if the amount of supplied air becomes excessive, oxygen will be present in the cooling inert gas, creating a risk of explosion. , I had to work on the safe side where there was a lot of flammable gas, and I was unable to control the amount of supplied air appropriately to burn the flammable gas efficiently and minimize the amount of flammable gas.
本発明の目的は可燃性ガス発生量に見合った供給空気導
入量を決定することにより、従来系外に廃棄されていた
可燃性ガス燃焼熱を有効に利用する方法を提供すること
にある。An object of the present invention is to provide a method for effectively utilizing the heat of combustion of combustible gas, which was conventionally discarded outside the system, by determining the amount of supplied air introduced commensurate with the amount of combustible gas generated.
本発明者らは前記課題を解決するため鋭意研究を行った
結果本発明に到達した。The present inventors conducted extensive research to solve the above problems, and as a result, they arrived at the present invention.
本発明は■冷却室の上部に予備室を有する消火塔内に、
コークス炉から窯出しされた灼熱コークスを装入し、該
灼熱コークスの有する顕然を不活性ガスを媒体として蒸
気の形で回収しうるようにした乾式消火方法において、
灼熱コークス装入ピッチ、予備室のコークス在庫量、冷
却室下部よりの排出コークス量の変動より循環ガスの一
酸化炭素、水素等の可熱性ガス発生量を推定し、予備室
下方の循環ガス吸込部へ、該循環ガス中の可燃性ガス濃
度が最少となる量に導入空気量をフィードフォワード制
御することを特徴とするコークス乾式消火設備操業方法
である。The present invention consists of: ■ Inside the fire extinguishing tower, which has an auxiliary room above the cooling room,
A dry fire extinguishing method in which scorching coke discharged from a coke oven is charged, and the substance of the scorching coke can be recovered in the form of steam using an inert gas as a medium,
The amount of heatable gases such as carbon monoxide and hydrogen generated in the circulating gas is estimated from the changes in the charging pitch of scorching coke, the amount of coke stocked in the preliminary chamber, and the amount of coke discharged from the lower part of the cooling chamber, and the circulating gas is sucked into the lower part of the preliminary chamber. A method of operating a coke dry fire extinguishing system is characterized in that the amount of introduced air is feed-forward controlled to an amount that minimizes the concentration of combustible gas in the circulating gas.
また■ボイラーから冷却塔に入る冷却ガス分析値による
一酸化炭素、水素、酸素の多量、発生蒸気温度、廃熱ボ
イラー入口ガス温度、発生蒸気量の各測定値による、導
入空気量のフィードバック制御を加味した前記■記載の
コークス乾式消火設備操業方法である。In addition, feedback control of the amount of air introduced is based on the measured values of the amount of carbon monoxide, hydrogen, and oxygen, the temperature of generated steam, the temperature of the waste heat boiler inlet gas, and the amount of steam generated based on the analysis values of the cooling gas entering the cooling tower from the boiler. This is the coke dry fire extinguishing equipment operating method described in (1) above.
また、■コークス乾式消火設備への灼熱コークス巻上げ
クレーンの中間所定点に灼熱コークス充填バケットが達
した時点より、所定時間後に、所定量の導入空気量を増
加させる前記■または■記載のコークス乾式消火設備操
業方法である。In addition, the coke dry extinguishing method described in (1) or (3) above is performed in which the amount of introduced air is increased by a predetermined amount after a predetermined period of time from the time when the scorching coke filling bucket reaches a predetermined point in the middle of the scorching coke hoisting crane to the coke dry extinguishing equipment. It is a method of operating equipment.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
例えば、プロセスコンピューターにコークスの窯出しス
ケジュールをインプットしておき、又乾式消火設備の操
業データを合わせて転送しておく。For example, the coke discharge schedule is input into the process computer, and the operating data of the dry fire extinguishing equipment is also transferred.
これらの情報によって、灼熱コークスの装入ピッチ、予
備室のコークス在庫量、排出コークス量が予測できるの
で、このデータを基にして循環ガス中の一酸化炭素、水
素等の可燃性ガス量が予測され、これによって予備室下
方の循環ガス吸込部への導入空気量が決定される。これ
らのデータは予測値であるので、導入空気量をフィード
フォワード制御することになる。Based on this information, it is possible to predict the charging pitch of scorching coke, the amount of coke in the preliminary room, and the amount of discharged coke. Based on this data, the amount of combustible gases such as carbon monoxide and hydrogen in the circulating gas can be predicted. This determines the amount of air introduced into the circulating gas suction section below the preliminary chamber. Since these data are predicted values, the amount of introduced air is controlled in a feedforward manner.
乾式消火設備への灼熱コークスの装入ピッチは、コーク
ス炉の窯出しタイミングで決定されるので、従ってコー
クス炉の装入孔蓋の開閉時間間隔で把握する。The charging pitch of scorching coke into the dry fire extinguishing equipment is determined by the timing of unloading the coke oven, so it is determined by the opening/closing time interval of the charging hole cover of the coke oven.
乾式消火設備での可燃性ガスの発生状態、従って循環ガ
ス中の可燃性ガス濃度はコークス装入ピッチ、予備室（
プレチャンバ−）のコークスレベル、排出コークス量等
で変動するため総合的に推定する必要がある。The state of flammable gas generation in dry fire extinguishing equipment, and therefore the concentration of flammable gas in the circulating gas, is determined by the coke charging pitch, the preliminary chamber (
Since it varies depending on the coke level in the pre-chamber, the amount of coke discharged, etc., it is necessary to make a comprehensive estimate.
可燃性ガス発生量の変動原因としては、予備室内でのコ
ークスの滞留時間の影響が大きく、滞留時間が大となる
と可燃性ガスの発生量も大となり、滞留時間が小となる
と可燃性ガス発生量も小となる。The cause of fluctuations in the amount of combustible gas generated is that the residence time of coke in the preliminary chamber has a large effect; the longer the residence time, the more flammable gas will be generated, and the shorter the residence time, the more flammable gas will be generated. The amount will also be small.
勿論、これに現状のボイラーから冷却塔へ入る冷却ガス
の分析値によって、−酸化炭素、水素、酸素の各測定値
、ボイラーの発生蒸気温度、廃熱ボイラー入口ガス温度
、発生蒸気量の各測定値よりフィードバック制御による
導入空気量制御を加味してもよい。このフィードバック
制御はタイムラグを考慮した連続制御としてもよいが、
前記のように制御遅れの問題があるので、実施例に記載
のように一定制御範囲を設定して、これを超える時また
はこの範囲より下る時に、所定量の空気量を増減するオ
ンオフ制御としてもよい。Of course, depending on the analysis values of the cooling gas entering the cooling tower from the current boiler, - measurements of carbon oxide, hydrogen, and oxygen, steam temperature generated by the boiler, temperature of waste heat boiler inlet gas, and amount of steam generated. The amount of introduced air may be controlled by feedback control based on the value. This feedback control may be continuous control considering time lag, but
As mentioned above, there is a problem of control delay, so as described in the example, a fixed control range is set, and when the range is exceeded or falls below this range, an on/off control that increases or decreases the amount of air by a predetermined amount can also be used. good.
またコークス装入毎に、灼熱コークスより発生する可燃
性ガスによって一時的に可燃性ガス濃度が増加するが、
これに対しては、灼熱コークス装入用の巻上げクレーン
の定位置を灼熱コークスを充填したバケットが通過した
時点から、所定時間後に、所定時間だけ、供給空気を所
定量−時的に増加するようにすることが好ましい。In addition, each time coke is charged, the flammable gas concentration temporarily increases due to the flammable gas generated from the scorching coke.
To deal with this, the supply air is increased by a predetermined amount for a predetermined amount of time after a predetermined period of time from the time when a bucket filled with scorching coke passes through a fixed position of a hoisting crane for charging scorching coke. It is preferable to
供給空気量過多による冷却不活性ガス中への酸素存在を
防止するために、供給空気量の１回当りの変更［１１を
設定し、更に可燃性ガス濃度下限値、酸素濃度上限値等
を予め設定しておき、その値に達した場合は、強制的に
供給空気量の変更を行う安全制御を加味しておくことが
望ましい。In order to prevent the presence of oxygen in the cooling inert gas due to an excessive amount of supplied air, the amount of supplied air must be changed per time [11], and the lower limit of flammable gas concentration, upper limit of oxygen concentration, etc. must be set in advance. It is desirable to set a safety control that forcibly changes the supply air amount when the value reaches that value.
従来、ガス分析時間の遅れによる制御遅れと、供給空気
量過多による爆発の危険性回避の点から、冷却不活性ガ
ス中の可燃性ガスを十分低くできず、可燃性ガス濃度の
高いままの状態で系外に無駄に廃棄されていたが、本発
明によれば、コークス炉窯出しスケジュール、乾式消火
設備の操業予測から、可燃性ガスの発生量を推定し、こ
れに見合った供給空気導入量を導入することによって、
系外に、廃棄されていた可燃性ガス燃焼熱を有効に蒸気
として回収することが可能である。Conventionally, the flammable gas concentration in the cooled inert gas could not be lowered sufficiently due to control delays due to delays in gas analysis time and to avoid the risk of explosion due to excessive air supply, resulting in a high concentration of flammable gases. However, according to the present invention, the amount of flammable gas generated is estimated from the coke oven kiln discharge schedule and the operation prediction of the dry fire extinguishing equipment, and the amount of supply air introduced is adjusted accordingly. By introducing
It is possible to effectively recover the combustion heat of combustible gas that was wasted outside the system as steam.
以下に実施例によって、本発明を更に具体的に説明する
が、本発明はこの実施例によって同等限定されるもので
はない。EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to the same extent by these Examples.
第１図について説明する。FIG. 1 will be explained.
７はプロセスコンピューターで１、コークス炉自動燃焼
制御用コンピューターに余裕があれば、これを活用して
もよく、又乾式消火設備用コンピューターを設けてもよ
い。何れにしても、コークス炉自動燃焼制御用コンピュ
ーターを利用し、窯出しスケジュールはコークス炉操業
管理用にコンピューターにインプットしたデータを使用
する（投入ピッチ９）。7 is a process computer 1. If there is a computer for coke oven automatic combustion control, this may be used, or a computer for dry fire extinguishing equipment may be provided. In any case, a coke oven automatic combustion control computer is used, and the kiln unloading schedule uses data input into the computer for coke oven operation management (input pitch 9).
このコンピューターに乾式消火設備の予備室のコークス
在庫量１０、冷却室下部よりの排出コークス量１１、循
環ガスの一酸化炭素、水素等の可燃性ガス発生量（ガス
分析計５による）、蒸気発生温度１３、廃熱ボイラー入
口ガス温度１４、発生蒸気量１２等の操業データを１分
毎に転送したものを使用する。This computer shows the amount of coke in stock in the preliminary room of the dry fire extinguishing equipment (10), the amount of coke discharged from the lower part of the cooling room (11), the amount of combustible gases generated such as carbon monoxide and hydrogen in the circulating gas (according to gas analyzer 5), and the amount of steam generated. Operational data such as temperature 13, waste heat boiler inlet gas temperature 14, amount of steam generated 12, etc., transferred every minute is used.
供給空気導入量は、窯出しスケジュールより決る灼熱コ
ークス装入ピッチ、予備室２のコークス在庫量１０、冷
却室３の下部よりの排出コークス量１１の変動による可
燃性ガス発生に対する影響度を予め数式化しておきフィ
ードフォワード制御を行うが、これに現状の可燃性ガス
濃度もフィードバックさせて加味した上で決定する。The amount of supplied air introduced is calculated in advance using a mathematical formula that calculates the degree of influence on flammable gas generation due to variations in the scorching coke charging pitch determined by the kiln discharge schedule, the amount of coke stock in the preliminary chamber 2 (10), and the amount of coke discharged from the lower part of the cooling chamber 3 (11). Feedforward control is performed based on the current combustible gas concentration, but the current flammable gas concentration is also fed back and taken into consideration before making a decision.
演算は次式によった。The calculation was based on the following formula.
（供給空気量）−ａ（灼熱コークス装入ピッチ）＋ｂ（
予備室のコークス在庫量）＋Ｃ（排出コークス量）＋ｄ
（可燃性ガス濃度）＋（現状空気導入量）
現状の可燃性ガス濃度と現状の空気導入量をベースとし
て、これをａ、ｂ、ｃのデータよりフィードフォワード
制御により修正するものである。(Supplied air amount) - a (scorching coke charging pitch) + b (
Amount of coke stock in the preliminary room) + C (amount of discharged coke) + d
(Flammable gas concentration) + (Current amount of air introduced) Based on the current flammable gas concentration and the current amount of air introduced, this is corrected by feedforward control from data a, b, and c.
供給空気量過多による危険性回避と操業の安定化を図る
ため、−酸化炭素濃度が５％以上又は０．５％以下に達
すると空気量を２０ＯＮｍ３／Ｈ増減し、水素濃度が３
％以上又は０，２％以下に達すると空気量を１０１００
Ｎ／Ｈ増減し、酸素濃度が０．２以上に達すると空気量
を５０ＯＮｍ３／Ｈ減少させ、また発生蒸気温度が５２
３℃以上又は５１７℃以下になると空気量を５０ＯＮｍ
３／Ｈ増減させ、廃熱ボイラー人口温度が９２０℃以上
になると空気量を５０ＯＮｍ”／Ｈ減少させ、発生蒸気
量が５４ｔ／Ｈ以上になると空気量を５０ＯＮｍ３／Ｈ
減少させる等のアクションを自動で行うようにした。In order to avoid risks caused by excessive air supply and stabilize operations, - When the carbon oxide concentration reaches 5% or more or 0.5% or less, the air amount is increased or decreased by 20ONm3/H, and the hydrogen concentration is increased or decreased by 3
% or more or less than 0.2%, the air amount is increased to 10100
When the N/H is increased or decreased and the oxygen concentration reaches 0.2 or more, the air amount is decreased by 50ONm3/H, and the generated steam temperature is increased to 52
If the temperature is 3℃ or higher or 517℃ or lower, reduce the air volume to 50ONm.
3/H increase/decrease, and when the waste heat boiler population temperature is 920℃ or higher, the air volume is decreased by 50ONm"/H, and when the generated steam volume is 54t/H or higher, the air volume is decreased by 50ONm3/H.
Actions such as reducing the amount are now automatically performed.
コークス装入毎に一時的に可燃性ガス濃度が一酸化炭素
で３〜４％増加していたが、灼熱コークスの乾式消火設
備への巻き上げクレーンの中間の所定位置に灼熱コーク
スが充填されたバケットが達した時点から１分後に２分
間、２０ＯＮｍ３／Ｈだけ供給空気量を増加することで
一酸化炭素濃度を０．５〜１％まで低下させることがで
きた。The flammable gas concentration temporarily increased by 3 to 4% with carbon monoxide after each coke charge, but the bucket filled with blazing coke was placed in a predetermined position in the middle of the hoisting crane to the dry extinguishing equipment for blazing coke. The carbon monoxide concentration was able to be reduced to 0.5 to 1% by increasing the amount of supplied air by 20 ONm3/H for 2 minutes one minute after the time when the carbon monoxide concentration was reached.
従来、冷却不活性ガス中の可燃性ガスの分析時間による
制御遅れにより、従来安全上可燃性ガスを比較的高い水
準にせざるを得ず、可燃性ガスを多量に廃棄していたが
、本発明によれば冷却不活性ガス中の可燃性ガスを極め
て低水準にしかも安全に低減させることができる、即ち
可燃性ガスを効率的に燃焼させることができ、この燃焼
熱により蒸気の回収増加が可能であり、エネルギー有効
活用による効果は大きい。Conventionally, due to control delays due to the analysis time of flammable gas in cooled inert gas, the flammable gas had to be kept at a relatively high level for safety reasons, and a large amount of flammable gas was disposed of, but this invention According to the method, the flammable gas in the cooled inert gas can be safely reduced to an extremely low level, that is, the flammable gas can be efficiently combusted, and the heat of combustion can be used to increase the recovery of steam. Therefore, the effects of effective energy utilization are significant.
空気導入弁、７・・・プロセスコンピューター ８・・
・送風機、９・・・灼熱コークス装入ピッチ（信号）（
コークス炉自動燃焼制御用コンピューター信号）、１０
・・・予備室コークス在庫量レベル計（信号）、１１・
・・排出コークス量（信号）、１２・・９発生蒸気量（
信号） １３・・・蒸気発生温度計（信号） １４・・
・廃熱ボイラー入口ガス温度計（信号）。Air introduction valve, 7... Process computer 8...
・Blower, 9... Scorching coke charging pitch (signal) (
computer signal for coke oven automatic combustion control), 10
...Preliminary room coke inventory level meter (signal), 11.
・・Amount of coke discharged (signal), 12・・9 Amount of steam generated (
Signal) 13... Steam generation thermometer (signal) 14...
- Waste heat boiler inlet gas thermometer (signal).
Claims (1)
ス炉から窯出しされた灼熱コークスを装入し、該灼熱コ
ークスの有する顕然を不活性ガスを媒体として蒸気の形
で回収しうるようにした乾式消火方法において、灼熱コ
ークス装入ピッチ、予備室のコークス在庫量、冷却室下
部よりの排出コークス量の変動より循環ガス中の一酸化
炭素、水素等の可燃性ガス発生量を推定し、予備室下方
の循環ガス吸込部へ、該循環ガス中の可燃性ガス濃度が
最少となる量に導入空気量をフィードフォワード制御す
ることを特徴とするコークス乾式消火設備操業方法。 ２、ボイラーから冷却塔に入る冷却ガス分析値による一
酸化炭素、水素、酸素の各量、発生蒸気温度、廃熱ボイ
ラー入口ガス温度、発生蒸気量の各測定値による、導入
空気量のフィードバック制御を加味した請求項１記載の
コークス乾式消火設備操業方法。 ３、コークス乾式消火設備への灼熱コークス巻上げクレ
ーンの中間所定点に灼熱コークス充填バケットが達した
時点より、所定時間後に所定量の導入空気量を増加させ
る請求項１または２記載のコークス乾式消火設備操業方
法。[Claims] 1. Burning coke discharged from a coke oven is charged into a fire extinguishing tower having a pre-chamber above the cooling chamber, and the appearance of the burning coke is measured using an inert gas as a medium. In a dry fire extinguishing method that allows recovery in the form of steam, carbon monoxide, hydrogen, etc. in the circulating gas are determined by fluctuations in the charging pitch of scorching coke, the amount of coke stocked in the preliminary room, and the amount of coke discharged from the lower part of the cooling room. A coke dry extinguishing system characterized by estimating the amount of combustible gas generated and controlling the amount of air introduced into the circulating gas suction section below the preliminary chamber to an amount that minimizes the concentration of combustible gas in the circulating gas. How to operate the equipment. 2. Feedback control of the amount of air introduced based on the measured values of the amounts of carbon monoxide, hydrogen, and oxygen, the temperature of generated steam, the temperature of the waste heat boiler inlet gas, and the amount of steam generated based on the analysis values of the cooling gas entering the cooling tower from the boiler. The coke dry fire extinguishing equipment operating method according to claim 1, which takes into account the following. 3. The coke dry extinguishing equipment according to claim 1 or 2, wherein the amount of introduced air is increased by a predetermined amount after a predetermined time from the time when the burning coke filling bucket reaches a predetermined intermediate point of the scorching coke hoisting crane to the coke dry extinguishing equipment. Operating method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1144151A JPH039988A (en) | 1989-06-08 | 1989-06-08 | Operation of coke dry quencher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1144151A JPH039988A (en) | 1989-06-08 | 1989-06-08 | Operation of coke dry quencher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH039988A true JPH039988A (en) | 1991-01-17 |
Family
ID=15355404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1144151A Pending JPH039988A (en) | 1989-06-08 | 1989-06-08 | Operation of coke dry quencher |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009173938A (en) * | 2009-03-05 | 2009-08-06 | Nippon Steel Corp | Coke dry-quenching method |
| WO2009110535A1 (en) * | 2008-03-07 | 2009-09-11 | 新日鉄エンジニアリング株式会社 | Method and device for controlling co concentration in coke dry-quenching equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60231790A (en) * | 1984-05-01 | 1985-11-18 | Ishikawajima Harima Heavy Ind Co Ltd | Automatic operation of dry coke quencher |
| JPS61168690A (en) * | 1985-01-21 | 1986-07-30 | Ishikawajima Harima Heavy Ind Co Ltd | Method of blowing air in dry coke quenching installation |
| JPS63308091A (en) * | 1987-06-10 | 1988-12-15 | Nkk Corp | Operation of apparatus for dry quenching of coke |
-
1989
- 1989-06-08 JP JP1144151A patent/JPH039988A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60231790A (en) * | 1984-05-01 | 1985-11-18 | Ishikawajima Harima Heavy Ind Co Ltd | Automatic operation of dry coke quencher |
| JPS61168690A (en) * | 1985-01-21 | 1986-07-30 | Ishikawajima Harima Heavy Ind Co Ltd | Method of blowing air in dry coke quenching installation |
| JPS63308091A (en) * | 1987-06-10 | 1988-12-15 | Nkk Corp | Operation of apparatus for dry quenching of coke |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110535A1 (en) * | 2008-03-07 | 2009-09-11 | 新日鉄エンジニアリング株式会社 | Method and device for controlling co concentration in coke dry-quenching equipment |
| JP2009235390A (en) * | 2008-03-07 | 2009-10-15 | Nippon Steel Engineering Co Ltd | Co concentration control method and controller in coke dry quenching facility |
| TWI408218B (en) * | 2008-03-07 | 2013-09-11 | Nippon Steel & Sumikin Eng Co | Coke dry fire extinguishing equipment one of the carbon oxide concentration control method and control device |
| JP2009173938A (en) * | 2009-03-05 | 2009-08-06 | Nippon Steel Corp | Coke dry-quenching method |
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