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JP2000204373A - コ―クス炉の装入蓋のシ―ル方法 - Google Patents

コ―クス炉の装入蓋のシ―ル方法

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Publication number
JP2000204373A
JP2000204373A JP11009333A JP933399A JP2000204373A JP 2000204373 A JP2000204373 A JP 2000204373A JP 11009333 A JP11009333 A JP 11009333A JP 933399 A JP933399 A JP 933399A JP 2000204373 A JP2000204373 A JP 2000204373A
Authority
JP
Japan
Prior art keywords
lid
coke oven
washer
water
charging hole
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.)
Withdrawn
Application number
JP11009333A
Other languages
English (en)
Inventor
Tomoji Honda
友治 本多
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP11009333A priority Critical patent/JP2000204373A/ja
Publication of JP2000204373A publication Critical patent/JP2000204373A/ja
Withdrawn legal-status Critical Current

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  • Coke Industry (AREA)

Abstract

(57)【要約】 【課題】 特別な装置を必要としないでコークス炉の装
入蓋のシール性を改善する方法を提供する方法を提供す
る。 【解決手段】 装入孔の蓋と座金の内少なくとも一方を
中空とし、該中空部に水を入れ、該水をコークス炉から
の熱で蒸発させて水蒸気とし、該水蒸気を装入孔の蓋と
座金との隙間にコークス炉内の炉圧以上の圧力で供給す
る。

Description

【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、特別な装置を必要
としないコークス炉の装入蓋のシール方法に関する。
【0002】
【従来の技術】従来のコークス炉の石炭装入孔用の蓋
は、鋳鉄製の円形の蓋一枚のみで使用され、装入孔の座
金表面と蓋表面を接触させることによってシールをして
いる。
【0003】この蓋のコークス炉側の内側温度は、石炭
をコークス炉炭化室に装入する時以外は装入孔に蓋が納
まっていることから約1000℃の高温となり、装入す
る時には蓋取り装置によって装入孔から外されることで
常温となる。この急激な温度変化を繰り返しを受ける過
酷な条件下で使用される蓋には熱変形が起きやすく、蓋
が変形すると装入孔の座金と蓋の接触面に隙間が生じ、
コークス炉ガスのガス漏れが発生し大気に放散される。
【0004】装入孔の座金表面および蓋にはコークス炉
内より発生するタールやカーボン等などが付着堆積しそ
の表面が凸凹となり、上記の蓋の熱変形と同様に装入孔
の座金と蓋の接触面に隙間が生じ、同様にコークス炉ガ
スのガス漏れが発生する。
【0005】一般的なガス漏れ対策としては、装入孔の
円周上にモルタルを流し込み装入孔と蓋の隙間を埋める
方法が知られているが、モルタルの流し込み不良が起き
やすく均一な施工が困難であることに加えて、コークス
炉内の温度変化による装入孔の座金と蓋の変形等の要因
が重なり、装入孔の円周上に流し込まれたモルタルに亀
裂が発生しガス漏れが発生するという問題があり、十分
な対策とはいえないのが実状である。
【0006】実開昭60−156155号公報に、ガス
漏れ対策として装入孔の座金表面と蓋表面の一方または
両方にセラミック溶射層を形成し、タールやカーボン等
の付着を改善する対策を提案している。
【0007】
【発明が解決しようとする課題】しかしながら、タール
やカーボン等の付着の問題が解決されたとしても装入孔
の座金および蓋は高温(およそ1000℃)にさらされ
熱変形し、装入孔の座金と蓋の接触面に隙間が生じ、ガ
ス漏れが発生することを回避できない。
【0008】また、前記方法は何れもシールのためにモ
ルタル液注入設備等の特別な装置が必要であり、コーク
スの製造コストを上げる要因になるという問題に加えて
シール性も不完全であり改善が求められていた。
【0009】本発明の目的は、特別な装置を必要としな
いでコークス炉の装入蓋のシール性を改善する方法を提
供することにある。
【0010】
【課題を解決するための手段】本発明者は、下記(A)
および(B)の知見を得た。 (A)コークス炉の放熱に着目し、蓋及び座金の少なく
とも一方を中空とし、内部に水を入れ、この水をコーク
ス炉の放散熱により加熱することで炉内のガス圧よりも
高い圧力の水蒸気を発生できる。
【0011】(B)上記発生水蒸気を圧力調整弁を介し
て蓋と座金の間に複数噴射供給すると、炉内のガスが漏
洩するのを防止できるためシール効果が大きい。
【0012】本発明は、以上の知見に基づいてなされた
もので、その要旨は、「装入孔の蓋と座金の内少なくと
も一方を中空とし、該中空部に水を入れ、該水をコーク
ス炉からの熱で蒸発させて水蒸気とし、該水蒸気を装入
孔の蓋と座金との隙間にコークス炉内の炉圧以上の圧力
で供給することを特徴とするコークス炉の装入蓋のシー
ル方法」である。
【0013】
【発明の実施の形態】図1は、本発明の実施方法を示す
概略図である。同図に示すように、給水配管6から給水
弁10を通して適量の水を蓋の中空部8および/または
座金の中空部7に供給する。
【0014】供給された水は、コークス炉内1の熱によ
り加熱され、熱が中空部8および/または座金の中空部
7の内部の水に伝熱し、沸点に到達し水蒸気が生成す
る。
【0015】この水蒸気は圧力調整弁5の設定圧力に達
するまで蓋の中空部7および/または座金の中空部8に
保有される。
【0016】この設定圧力以上の圧力に到達すると圧力
調整弁5から隙間部9(前述の通り座金3および蓋4
は、高温(およそ1000℃)にさらされ熱変形し、座
金3と蓋4の接触面に隙間が生じる)に水蒸気が噴出さ
れ、装入孔2を経由しコークス炉内1へと進み発生ガス
と共に図示していない上昇管へと送り込まれる。
【0017】圧力調整弁5の設定圧力は、コークス炉内
の炉圧以上の圧力とし、圧力調整された水蒸気により装
入孔の蓋と座金の隙間部9がシールされ発生ガスの炉外
への漏洩が防止できる。
【0018】圧力調整弁5からの水蒸気排出は、蓋の中
空部8内および/または座金の中空部7内の設定圧力値
になると自動的に行われる。
【0019】図2は、給水配管6の下部付近の圧力調整
弁5の拡大図であり、設定値圧力以上になると蓋の中空
部8および/または座金の中空部7内の発生水蒸気によ
り内蔵のバネ(図示せず)が押されバルブ(図示せず)
が開き水蒸気吹き出し管12から水蒸気吹き出し口11
に水蒸気の排出が行われ隙間部9のシールを行うことが
できる。
【0020】圧力調整弁5の数は、3〜12個が好まし
い。その理由は3未満では加圧効果が低下するおそれが
あり、12を超えると設備が煩雑になり管理上の問題が
発生するからである。好ましくは、5〜10個である。
【0021】供給する水は、純水、飲料水、工業用水等
が使用できるがスケールまたは水垢等の発生問題を考慮
すると純水および飲料水が好ましい。
【0022】蓋および座金に供給する水をコークス炉上
昇管で予熱して使用すれば、コークス炉の熱をさらに利
用できるため望ましい。
【0023】
【発明の効果】本発明の方法により、装入孔の蓋及び座
金の隙間部のシール性が向上し、乾留中の発生ガスの漏
洩を防止できる。
【図面の簡単な説明】
【図1】本発明の実施方法を示す概略図である。
【図2】給水配管付近の圧力調整弁の拡大図である。
【符号の説明】
1:コークス炉内 2:装入孔 3:座金 4:蓋 5:圧力調整弁 6:給水配管 7:座金の中空部 8:蓋の中空部 9:座金と蓋の隙間部 10:給水弁 11:水蒸気吹き出し口 12:水蒸気吹き出し管

Claims (1)

    【特許請求の範囲】
  1. 【請求項1】 装入孔の蓋と座金の内少なくとも一方を
    中空とし、該中空部に水を入れ、該水をコークス炉から
    の熱で蒸発させて水蒸気とし、該水蒸気を装入孔の蓋と
    座金との隙間にコークス炉内の炉圧以上の圧力で供給す
    ることを特徴とするコークス炉の装入蓋のシール方法。
JP11009333A 1999-01-18 1999-01-18 コ―クス炉の装入蓋のシ―ル方法 Withdrawn JP2000204373A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11009333A JP2000204373A (ja) 1999-01-18 1999-01-18 コ―クス炉の装入蓋のシ―ル方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11009333A JP2000204373A (ja) 1999-01-18 1999-01-18 コ―クス炉の装入蓋のシ―ル方法

Publications (1)

Publication Number Publication Date
JP2000204373A true JP2000204373A (ja) 2000-07-25

Family

ID=11717556

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2000204373A (ja)

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