JPS61168690A - Method of blowing air in dry coke quenching installation - Google Patents
Method of blowing air in dry coke quenching installationInfo
- Publication number
- JPS61168690A JPS61168690A JP868685A JP868685A JPS61168690A JP S61168690 A JPS61168690 A JP S61168690A JP 868685 A JP868685 A JP 868685A JP 868685 A JP868685 A JP 868685A JP S61168690 A JPS61168690 A JP S61168690A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- cooling
- cooling gas
- air
- boiler
- 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
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
この発明は、コークス乾式消火設備の冷却ガスの循環路
中に空気を吹込んで冷却ガスの可燃成分を燃焼させる空
気吹込方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an air blowing method for blowing air into a cooling gas circulation path of a coke dry extinguishing equipment to burn combustible components of the cooling gas.
コークス乾式消火設備は、図面に表わすように冷却塔ｌ
とボイラ２との間にて図中矢印方向に不活性の冷却ガス
を循環させている。冷却塔ｌ内にては、その冷却塔１円
に上方から装入される赤熱コークスを冷却ガスによって
所定の温度にまで冷却し、そして冷却後のコークスを冷
却塔ｌの底部から切出装置（図示せず）によって排出す
る。赤熱コークスの顕熱を奪った高熱の冷却ガスはボイ
ラ２内Ｃ：入り、このボイラ２にて蒸気を発生させるこ
とにより熱回収される。熱回収された後の冷却ガスは循
環７アンＣ３によって再び冷却塔１内に圧送される。そ
して一般には、冷却ガスの循環路におけるボイラ２の前
後には、除塵器４とサイクロン５が備えられている。The coke dry extinguishing equipment is installed in the cooling tower as shown in the drawing.
Inert cooling gas is circulated between the boiler 2 and the boiler 2 in the direction of the arrow in the figure. Inside the cooling tower 1, red-hot coke is charged into the cooling tower 1 from above and is cooled to a predetermined temperature by cooling gas, and the cooled coke is cut out from the bottom of the cooling tower 1 by a cutting device ( (not shown). The high-temperature cooling gas that has taken away the sensible heat from the red-hot coke enters the boiler 2 (C), where the heat is recovered by generating steam. The cooling gas after heat recovery is pumped into the cooling tower 1 again by the circulation 7 Anne C3. Generally, a dust remover 4 and a cyclone 5 are provided before and after the boiler 2 in the cooling gas circulation path.
このようなコークス乾式消火設備における冷却ガスは、
赤熱コークスと共に持ち込まれる水素（Ｈ２）や炉内の
赤熱コークスとの以下の反応によって、水素（Ｈ２）
、−酸化炭素１ｃｏ）分の多い可燃性Ｃ条件によっては
爆発性）のガス七なる。The cooling gas in such coke dry extinguishing equipment is
Hydrogen (H2) is produced by the following reaction with the hydrogen (H2) brought in with the red-hot coke and the red-hot coke in the furnace.
, - a combustible gas with a high carbon oxide (C) content (explosive depending on conditions).
Ｃ＋１／２０□−ＣＯ Ｃ＋Ｈ２Ｏ−４ＣＯ＋■（２ ＣＯ□＋Ｃ→２ Ｃ０ 冷却ガスの循環系には負圧部と正圧部がある。C+1/20□-CO C+H2O-4CO+■(2 CO□＋C→2 C0 The cooling gas circulation system has a negative pressure section and a positive pressure section.
その負圧部からは空気が侵入する可能性があシ、空気が
侵入し九場合、その混合比によっては爆発の危険がある
。また、正圧部から冷却ガスが大気中に漏洩した場合に
は、ガス中毒や火災などを引き起こすおそれがある。There is a possibility that air may enter from the negative pressure part, and if air enters, there is a risk of explosion depending on the mixture ratio. Furthermore, if the cooling gas leaks into the atmosphere from the positive pressure section, there is a risk of gas poisoning or fire.
そこで、従来より、冷却塔ｌからボイラ２に入る高温の
冷却ガスの流路Ｌ「中に、希釈空気ファン６がら空気を
吹込んで冷却ガス中のＣｏ ＊ Ｈ２を燃焼させて可燃
分を減少させている Ｃ「空気希釈」と称される）。そ
の燃焼による発熱分はボイラ２への入熱とな）、蒸気と
して有効に熱回収される。空気の吹込みにより生成ま九
は増加する冷却ガスは放散管７などから大気へ放散され
、ま７ｔＦｉＣＯ、Ｈ２を含む燃料用ガスとして回収さ
れる。しη為し、この燃料用ガスとしての回収は、燃料
としての価値と、回収の几めの股備、運転費との関係か
ら採算上の問題があり、近年は、可及的に多量の空気を
吹込んで熱回収する傾向にある、ところ−へ冷却ガスの
組成は変動が太き（、特に可燃分の１つであるＨ２ は
変動が激しい。これは、Ｈ２の多くが赤熱コークスの装
入によって持込まれる分であって、そのコークスの装入
が一般には１０〜２０分の間隔で間欠的に行なわれ、赤
熱コークスの供給源であるコークス炉の形式によっては
１〜２時間の中断かあるからである。Therefore, conventionally, a dilution air fan 6 blows air into the flow path L of high-temperature cooling gas that enters the boiler 2 from the cooling tower 1 to burn the Co*H2 in the cooling gas and reduce the combustible content. (referred to as "air dilution"). The heat generated by the combustion is input into the boiler 2) and is effectively recovered as steam. The cooling gas generated by the blowing of air is dissipated into the atmosphere from the dispersion pipe 7 and the like, and is recovered as a fuel gas containing FiCO and H2. However, recovering this gas as a fuel has problems in terms of profitability due to the relationship between its value as a fuel, preparation for recovery, and operating costs. There is a tendency for cooling gas to recover heat by blowing air into it, but the composition of the cooling gas fluctuates widely (in particular, H2, which is one of the combustible components, fluctuates widely. This is because much of the H2 is loaded with red-hot coke). The charging of coke is generally carried out intermittently at intervals of 10 to 20 minutes, and may be interrupted for 1 to 2 hours depending on the type of coke oven that is the source of red-hot coke. Because there is.
従来は、冷却ガスの成分の変動に応じて空気の吹込み量
を！ｉｌｌ整する九め、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！調整用の
希釈空気流量調節弁８を手動により開度調整していた。Conventionally, the amount of air blown was adjusted according to changes in the components of the cooling gas! The ninth stage of adjustment is to inject air intuitively while referring to the amount of coke processed and the operational status of the coke oven! The opening degree of the dilution air flow control valve 8 was manually adjusted.
〔考案が解決しようとする問題点コ
上記従来のような手動による感覚的な空気吹込み量の調
整では、冷却ガスの成分の激しい変動に対応しきれなか
った。[Problems to be solved by the invention] The above-mentioned conventional manual and intuitive adjustment of the amount of air blowing could not cope with severe fluctuations in the components of the cooling gas.
そして、空気の吹込み量が少ない場合ｇ二は次のような
問題を生じ九〇
■ 冷却ガス中のＨ２，Ｃｏ 分がリッチとなり、ガス
の爆発性、中毒性が増して、安全上問題となる。If the amount of air blown into g2 is small, the following problems will occur.90■ The H2 and Co content in the cooling gas will become rich, increasing the explosiveness and toxicity of the gas, and causing safety problems. Become.
■ そのような＋１ツチなガスを大気に放散することに
なって、省エネルギー化に反する。■ Such +1+ gases will be emitted into the atmosphere, which goes against energy conservation.
■ しかも、そのような１１ツチなガスは環境上の問題
から燃焼させて放散する必要があシ、その燃焼を維持す
るためにＣガス等の別の燃料を要し、省エネルギー化を
図る上で問題となる。■ Furthermore, due to environmental concerns, it is necessary to burn and dissipate such 11-gases, and to maintain the combustion, another fuel such as C gas is required, making it difficult to save energy. It becomes a problem.
■ 冷却ガス中の可燃分の燃焼量が少なくなるため、ボ
イラ２の入口温度が下がシ、熱回収車が低下する。■ Since the amount of combustible components in the cooling gas is reduced, the inlet temperature of the boiler 2 decreases, and the heat recovery vehicle decreases.
一方、空気の吹込み量が多い場合には、冷却ガス中の可
燃分の割合が下ってついには燃焼しな（な）、失火して
冷却ガス中に空気が入る。この九め、コークスが燃焼し
てコークスの損失を招き、ま九爆発の危険もある。を比
、その燃焼による温度上昇は、プラントの運転上好まし
くない。On the other hand, if a large amount of air is blown into the cooling gas, the proportion of flammable content in the cooling gas will decrease and eventually it will not burn, resulting in a misfire and air entering the cooling gas. During this process, the coke burns, resulting in loss of coke, and there is also the risk of an explosion. The temperature rise caused by its combustion is unfavorable for plant operation.
この発明は、このような従来の問題を解決するものであ
る。This invention solves these conventional problems.
ｃ問題点を解決するための手段〕
この発明のクークス乾式消火設備における突気吹込方法
は、吹込んだ空気による冷却ガス中の可燃分の燃焼の失
火が冷却ガス中の酸素濃度から判明することに着目し１
その酸素濃度を監視して、空気の吹込みによる可燃分の
燃焼に失火が起きない範囲で空気の吹込み量を最大に一
履整することを特徴とする。Means for Solving Problem c] The sudden air blowing method in the Kukes dry fire extinguishing equipment of the present invention is such that misfire due to combustion of combustible matter in the cooling gas caused by the blown air can be determined from the oxygen concentration in the cooling gas. Focusing on 1
It is characterized in that the oxygen concentration is monitored and the amount of air blown is adjusted to the maximum within a range that does not cause a misfire in the combustion of combustible substances due to air blown.
以下、この発明の詳細な説明するＣ図面参照）。 (See drawing C below for detailed explanation of this invention).
この発明では、まず、ボイラ２から冷却塔ｌに入る冷却
ガスの流路Ｌ２ 中における冷却ガス中の酸素濃度を含
めた成分、組成を検出する。その几めに、流路Ｌ２ 中
にはガス採取器９が備えられ、このガス採取器９にて採
取され几ガスがサンプルガス配管ｌＯを通ってガス分析
器１１に導かれる。In this invention, first, the components and composition including the oxygen concentration in the cooling gas in the flow path L2 of the cooling gas entering the cooling tower l from the boiler 2 are detected. To this end, a gas sampler 9 is provided in the flow path L2, and the gas sampled by the gas sampler 9 is guided to the gas analyzer 11 through the sample gas pipe IO.
このガス分析器１１が常時、ガス成分、組成（％）を検
出する。This gas analyzer 11 constantly detects gas components and composition (%).
ガス分析器１１の検出信号は希釈空気流量調節器１２に
入力される。この調節器１２は、ガス中の可燃分（Ｈ２
，Ｃｏ 、 ｔ７ｔはこれらの混合Ｈ２＋ＣＯで代表
される）の組成の値ま几は範囲を設定し、とのｔまたは
範囲となるよう（二流量調節弁８に開度信号を送って、
空気の吹込み流１を調節し、可燃分の燃焼量を調整する
。A detection signal from the gas analyzer 11 is input to a dilution air flow rate regulator 12 . This regulator 12 controls the combustible content (H2) in the gas.
.
The air blowing flow 1 is adjusted to adjust the amount of combustible matter burned.
省エネルギー化を図る上においては、可燃分をセス値と
関係があって一定しない。したがって、調節器１２によ
る設定値はプロセス状況に応じて変える。その際に、ガ
ス中の酸素濃度を有効なデータとして活用する。すなわ
ち、空気の吹込み量が多くて失火すると酸素ｆａ度が上
がるため、その温度）上の限界を今迄のデータの蓄積か
ら察知することができる。ゆえに、失火が起きるときの
酸素濃度を越えない範囲で空気の吹込み量を最大に調整
することにより、可燃分を可及的に少なくすることがで
きる。調節器１２はこのような機能を有する。In order to save energy, the combustible content is not constant because it is related to the cess value. Therefore, the set value by the regulator 12 varies depending on the process situation. In doing so, the oxygen concentration in the gas will be used as effective data. In other words, if a misfire occurs due to a large amount of air being blown into the engine, the oxygen fa level will rise, and the upper limit of the temperature can be determined from the data accumulated up to now. Therefore, by adjusting the amount of air blown to the maximum within a range that does not exceed the oxygen concentration at which a misfire occurs, the amount of combustible matter can be reduced as much as possible. The regulator 12 has such a function.
また、空気の吹込み量が多いと、ボイラ２の入口温度が
高（なりすぎてボイラ２の保護上好ましくない場合があ
る。そこで、ボイラ２の入口に温度検出器１３を備え、
その検出＠度が設定温度を越えないように、調節器１２
が希釈空気流！調節弁８の開度を調整する。しかし、こ
れに対しては、人為的に、冷却ガスの量を増加し皮）、
コークス処理量を減少させることによって対処すること
も可能である。In addition, if the amount of air blown is large, the temperature at the inlet of the boiler 2 may become too high (which may be undesirable in terms of protecting the boiler 2. Therefore, a temperature detector 13 is provided at the inlet of the boiler 2,
To prevent the detection@degree from exceeding the set temperature, the regulator 12
is diluted air flow! Adjust the opening degree of the control valve 8. However, in response to this, the amount of cooling gas is artificially increased (skin),
It is also possible to deal with this by reducing the amount of coke throughput.
また、失火し次とき（酸素濃度から判明する）のガス成
分（ｉｔ、とＣＯの割合、及びそれらの合計量）、組成
と、温度検出器１４にて検出する燃焼前のガス温度との
関゛係のプロゼス直を調節器１２が自動的に蓄積し、こ
れを現在の運転プロセス値と対比して、失火を起こさな
いぎシぎりの大量の空気を吹込めるように、ガス中の可
燃分の成へ組成の値ｔｘは範囲を設定することも可能で
ある。In addition, the relationship between the gas components (ratio of IT and CO, and their total amount) and composition after a misfire (as determined from the oxygen concentration) and the gas temperature before combustion detected by the temperature detector 14 is also shown. The controller 12 automatically accumulates the process values related to the above, compares them with the current operating process values, and adjusts the combustible content in the gas so that it can blow in as much air as possible without causing a misfire. It is also possible to set a range for the composition value tx.
以上説明し九ように、この発明によるコークス乾式消火
設備１：おける空気吹込方法は、冷却ガス中の可燃分の
燃焼の失火が冷却ガス中の酸素濃度の変化から判明する
ことに着目して、失火が起きるときの酸素濃度を越えな
い範囲で空気の吹込み量を最大に調整するから、失火を
起こすことなく可及的に冷却ガス中の可燃分を少なくす
ることができる。この結果、次のような効果を奏するう
■ 燃焼量が増して、ボイラによる熱の回収量が増加し
１ま几ボイラ入口温度の上昇に依シボイラによる熱の回
収効率も上昇する。As explained above, the air blowing method in the coke dry extinguishing equipment 1 according to the present invention focuses on the fact that misfire in the combustion of combustible components in the cooling gas is revealed from changes in the oxygen concentration in the cooling gas. Since the amount of air blown is adjusted to the maximum within a range that does not exceed the oxygen concentration at which a misfire occurs, it is possible to reduce the combustible content in the cooling gas as much as possible without causing a misfire. As a result, the following effects are produced: (1) The amount of combustion increases, the amount of heat recovered by the boiler increases, and the efficiency of heat recovery by the boiler also increases depending on the rise in boiler inlet temperature.
■ 可燃分の減少によって冷却ガスの比熱が大き（なり
、赤熱コークスに対する冷却効果が向上する。■ The specific heat of the cooling gas increases due to the reduction in combustible content, which improves the cooling effect on red-hot coke.
■ 失火による冷却ガス循環系への空気の侵入を回避し
て、プラントの保全を図ることができる。■ Plant maintenance can be achieved by avoiding air intrusion into the cooling gas circulation system due to misfires.
■ 外部へ放散されるガス中の可燃分が少なくなるため
、およびその放散の際の可燃分助燃用の燃料ガスを節約
できる九め、省エネルギー化を図る上で有効であり、を
九環境保全上においても有効である。■ Since the amount of combustible content in the gas released to the outside is reduced, and the amount of fuel gas used to assist in the combustion of the combustible content during its release, it is effective for energy conservation, and is effective for environmental conservation. It is also effective in
■ 冷却ガスの毒性が低下する九め、漏洩等の際の安全
上有用である。■ It reduces the toxicity of the cooling gas, which is useful for safety in the event of a leak.
図面はこの発明が実抱されるコークス乾式消火設備全体
の概略構成図である。
ｌ・・・・・・冷却塔、２・・・・・・ボイラ、７・・
・・・・下部放散管、８・・・・・・希釈空気流量調節
弁、１２・・・・・・調節器、１５・・・・・・上部放
散管。The drawing is a schematic diagram of the entire coke dry extinguishing equipment in which the present invention is implemented. l...Cooling tower, 2...Boiler, 7...
...Lower diffusion pipe, 8...Dilution air flow rate control valve, 12...Adjuster, 15...Upper diffusion pipe.
Claims (1)
却ガスによつて冷却塔内の赤熱コークスを冷却すると共
に、その赤熱コークスの顕熱を奪つた高温の冷却ガスの
熱をボイラにて回収し、かつ冷却塔からボイラに入る高
温の冷却ガスの流路中に空気を吹込んで可燃分を燃焼さ
せるコークス乾式消火設備において、ボイラから冷却塔
に入る冷却ガスの成分、組成、温度を検出し、酸素濃度
を監視して、前記空気の吹込みによる可燃分の燃焼に失
火が起きない範囲で空気の吹込み量を最大に調整するこ
とを特徴とするコークス乾式消火設備における空気吹込
方法。Cooling gas is circulated between the cooling tower and the boiler, and the cooling gas cools the red-hot coke in the cooling tower, and the heat of the high-temperature cooling gas that has taken the sensible heat of the red-hot coke is transferred to the boiler. In coke dry extinguishing equipment, the components, composition, and temperature of the cooling gas that enters the cooling tower from the boiler are monitored. A method for blowing air in a coke dry fire extinguishing system, characterized by detecting oxygen concentration, monitoring the oxygen concentration, and adjusting the amount of air blowing to the maximum within a range that does not cause a misfire in the combustion of combustible substances due to the blowing of air. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60008686A JPH0791539B2 (en) | 1985-01-21 | 1985-01-21 | Air blowing method for coke dry fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60008686A JPH0791539B2 (en) | 1985-01-21 | 1985-01-21 | Air blowing method for coke dry fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61168690A true JPS61168690A (en) | 1986-07-30 |
| JPH0791539B2 JPH0791539B2 (en) | 1995-10-04 |
Family
ID=11699801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60008686A Expired - Fee Related JPH0791539B2 (en) | 1985-01-21 | 1985-01-21 | Air blowing method for coke dry fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791539B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039988A (en) * | 1989-06-08 | 1991-01-17 | Nippon Steel Chem Co Ltd | Operation of coke dry quencher |
| JPH03157485A (en) * | 1989-11-14 | 1991-07-05 | Sumitomo Metal Ind Ltd | Operation of dry quenching facility for coke |
| JPH0468080A (en) * | 1990-07-09 | 1992-03-03 | Nippon Steel Corp | Operation control in dry quencher for coke |
| JPH0476095A (en) * | 1990-07-19 | 1992-03-10 | Nippon Steel Corp | Method and equipment for controlling the increase in quantity of vapor in dry quenching installation |
| WO2014041919A1 (en) | 2012-09-13 | 2014-03-20 | 新日鉄住金エンジニアリング株式会社 | Coke dry quenching facility |
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|---|---|---|---|---|
| JPS5285203A (en) * | 1976-01-08 | 1977-07-15 | Nippon Kokan Kk <Nkk> | Control of heat input of boiler in dry quenching facilities of coke |
| JPS535201A (en) * | 1976-07-06 | 1978-01-18 | Nippon Kokan Kk <Nkk> | Automatic control of circulating gas composition in coke dry quenching plant |
| JPS5410302A (en) * | 1977-06-24 | 1979-01-25 | Nippon Kokan Kk <Nkk> | Method of extinguishing coke in dry extinguishing system and device therefor |
| JPS5896677A (en) * | 1981-12-04 | 1983-06-08 | Sumitomo Metal Ind Ltd | Method for controlling temperature of hot exhaust gas of dry coke-quenching apparatus |
-
1985
- 1985-01-21 JP JP60008686A patent/JPH0791539B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285203A (en) * | 1976-01-08 | 1977-07-15 | Nippon Kokan Kk <Nkk> | Control of heat input of boiler in dry quenching facilities of coke |
| JPS535201A (en) * | 1976-07-06 | 1978-01-18 | Nippon Kokan Kk <Nkk> | Automatic control of circulating gas composition in coke dry quenching plant |
| JPS5410302A (en) * | 1977-06-24 | 1979-01-25 | Nippon Kokan Kk <Nkk> | Method of extinguishing coke in dry extinguishing system and device therefor |
| JPS5896677A (en) * | 1981-12-04 | 1983-06-08 | Sumitomo Metal Ind Ltd | Method for controlling temperature of hot exhaust gas of dry coke-quenching apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039988A (en) * | 1989-06-08 | 1991-01-17 | Nippon Steel Chem Co Ltd | Operation of coke dry quencher |
| JPH03157485A (en) * | 1989-11-14 | 1991-07-05 | Sumitomo Metal Ind Ltd | Operation of dry quenching facility for coke |
| JPH0468080A (en) * | 1990-07-09 | 1992-03-03 | Nippon Steel Corp | Operation control in dry quencher for coke |
| JPH0476095A (en) * | 1990-07-19 | 1992-03-10 | Nippon Steel Corp | Method and equipment for controlling the increase in quantity of vapor in dry quenching installation |
| WO2014041919A1 (en) | 2012-09-13 | 2014-03-20 | 新日鉄住金エンジニアリング株式会社 | Coke dry quenching facility |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0791539B2 (en) | 1995-10-04 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |