EP0107878B1 - Coke oven battery - Google Patents

Coke oven battery Download PDF

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Publication number
EP0107878B1
EP0107878B1 EP83201442A EP83201442A EP0107878B1 EP 0107878 B1 EP0107878 B1 EP 0107878B1 EP 83201442 A EP83201442 A EP 83201442A EP 83201442 A EP83201442 A EP 83201442A EP 0107878 B1 EP0107878 B1 EP 0107878B1
Authority
EP
European Patent Office
Prior art keywords
screen
roof
sections
conduits
coke oven
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.)
Expired
Application number
EP83201442A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0107878A1 (en
Inventor
Jacob Felthuis
Jacobus Van Laar
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.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Groep BV
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 Hoogovens Groep BV filed Critical Hoogovens Groep BV
Priority to AT83201442T priority Critical patent/ATE17019T1/de
Publication of EP0107878A1 publication Critical patent/EP0107878A1/en
Application granted granted Critical
Publication of EP0107878B1 publication Critical patent/EP0107878B1/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
    • C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B29/00—Other details of coke ovens
    • C10B29/06—Preventing or repairing leakages of the brickwork

Definitions

  • the present invention relates to a coke oven battery.
  • Coke oven batteries having a plurality of substantially horizontal coking chambers and an oven roof.
  • the oven roof has a plurality of vertical conduits e.g. for inspection, for the removal of coke-oven gas, and for charging the battery.
  • the majority of the oven roof is constructed from masonry and the joints between the masonry open and cracks develop when the coke oven battery is fired and also during operation of the battery. This leads to the problem that coke oven gas produced during operation of the battery leaks from the coking chambers in the battery to the exterior of the battery orto the combustion system of the battery through the open joints and cracks in the roof.
  • Convection of the coke-oven gas causes the temperature of the oven roof to increase and combustion of the gas in the roof (such combustion being known as "inner fires") damages the brickwork.
  • the tie rods installed in the roof become too hot and the tensile force they exert decreases, reducing their effectiveness.
  • the upper parts of the roof usually contain porous insulation bricks and the hydrocarbons in the coke-oven gas condense in these bricks, reducing their insulative effect.
  • Coke-oven gas may also pass through the roof to the combustion system of the battery, leading to incomplete combustion and sooting of the chimneys. Coke-oven gas leaking to the atmosphere causes pollution of the environment.
  • combustion gas it is also possible for combustion gas to leak from the combustion system, especially from the inspection conduits extending vertically through the oven roof, into the oven roof itself and from thence to the atmosphere.
  • tie rods are sometimes provided in the roof, which exert compressive forces on the lateral edges of the roof. This may reduce the amount of gas leakage but is effect is extremely limited and is useless in combatting localised leaks.
  • the present invention seeks to eliminate, or at least reduce, the problem of gas leakage in the oven roof. It does this by providing a gas-tight screen in the roof.
  • the screen has substantially horizontal sections extending between the vertical conduits in the roof, and substantially vertical sections adjacent the vertical conduits.
  • the substantially horizontal sections limit the spread of gas from the coking chambers and the substantially vertical sections limit the spread from the conduits.
  • the substantially vertical sections also help to stop gas leakage to the combustion systems.
  • the screen is preferably made of a plurality of metal sheets.
  • the substantially vertical sections of the screen should preferably be designed so that they extend to a point at or adjacent the top of the oven roof.
  • the top of the substantially vertical sections should preferably be constructed so that they form a gas-tight seal with moulded bricks which restrict the conduits. This may be achieved by casting in concrete a stepped portion of the vertical sections to the moulded bricks.
  • the substantially horizontal sections preferably comprise two separate horizontal layers spaced vertically apart.
  • the oven roof consists from bottom to top of a number of courses of silica and/or chamotte bricks, and several courses of refractory insulation bricks, at least the substantially horizontal sections of the screem should preferably be installed in the section containing the porous refractory insulation bricks.
  • tie rods are provided in the roof, such that the screen is between them and the coking chambers. This prevents gas leaking to the tie rods to reduce the risk of their tensile stress being reduced by overheating.
  • a coke-oven battery has horizontal coking chambers 2 and an oven roof 3.
  • the temperature in the coking chambers 2 during operation of the battery is approximately 800°C.
  • the oven roof 3 is in most cases designed as a brickwork structure, and is approximately 1 metre thick.
  • Combustion walls 4 are provided between adjacent coking chambers 2, each wall 4 comprising a number of combustion chambers 5. During operation, the temperature in the combustion chambers 5 is approximately 1350°C.
  • a large number of vertical inspection conduits 6 are provided in oven roof 3, which conduits open into the combustion chambers 5.
  • At least one ascension conduit 7 for coke-oven gas is provided in the oven roof 3 for each coking chamber.
  • charging conduits 8 are also provided in the oven roof for coking coals. Inspection conduits 6 and charging conduits 8 are sealed with covers during operation.
  • coke-oven gas penetrates open joints and cracks in oven roof 3 (see Figure 2) at arch 9, ascension conduit 7 and charging conduits 8, in the direction shown by arrows 10.
  • This gas seeks an exit to the atmosphere through the oven roof, in the direction of arrows 11, or finds its way, under certain conditions through the inspection conduits 6 to the combustion system, as shown by arrows 12.
  • combustion gas also penetrates the oven roof at inspection conduit 6 in the direction of arrows 27, whereupon the combustion gas also seeks an exit to the atmosphere in the direction of arrows 11.
  • a gas-tight screen 15 is installed between the vertical conduits 6, 7 and 8 in the oven roof.
  • the screen 15 comprises substantially horizontal and substantially vertical sections 17 and 18 respectively formed from metal sheets 16, the substantially horizontal sections 17 extend between the conduits, and the substantially vertical sections 18 are adjacent the conduits 6, 7 and 8.
  • the metal sheets 16 are installed in the joints of brickwork 13.
  • a good structure for example is one in which the metal sheets are 0.05-0.25 mm thick, and consist of oxidation-resistant alloy steel foil, the material of which has the following composition: 15-30% Cr, 5-25% Ni and 0-10% Mo. Sheets of fixed dimensions or sections which are taken up from a coil, in widths of 60 to 90 cm, for example, are used for producing screen sections 17, 18. The sheets are installed so that they overlap.
  • the sheets can be installed not only when constructing a new coke-oven battery, but can also be used in an existing oven roof, after parts of it have been demolished.
  • the substantially vertical sections 18 extend from close to the top of the oven roof.
  • the substantially vertical sections 18 of the screen 15 prevent gas from penetrating the brickwork, past vertical screen sections 18 in the direction of arrows 10, at the vertical conduits 6, 7, 8.
  • the substantially horizontal sections 17 of the screen 15 prevent the conveyance to the atmosphere of gas which has penetrated oven roof 3 from arch 9 of coking chambers 2.
  • the substantially horizontal sections 17 also prevent leakage into the atmosphere of gas which is forced along the bottom of the substantially vertical sections 18 of the screen 15 past these sections and into the brickwork, for example, if these sections are affected by a high temperature.
  • the substantially vertical sections close to inspection conduits 6 also prevent the discharge of gas which has penetrated the brickwork underneath the substantially horizontal sections 17 of the screen 15 via the inspection conduits and into the combustion system.
  • the substantially vertical sections 18 of the screen are arranged so that they form a gas-tight connection with moulded bricks 14, by bringing these sections into contact with the moulded bricks at point 19, and preferably casting the structure thus formed in refractory concrete.
  • the moulded bricks at the top of the vertical conduits are, in most cases, recessed slightly in relation to the moulded bricks underneath them.
  • a stepped top section 20 of the vertical sections 18 is desirable. This stepped top section 20 is considered to form part of the vertical section 18 of the screen 15, so that these sections 18 are referred to -as substantially vertical sections although they may not be vertical over their entire length.
  • the inspection conduits 6 of a combustion wall are installed in a row as shown in Figure 1 in conventional coke-oven battery design, and are located close to each other. Although it is possible to install substantially vertical sections in the oven roof round each inspection conduit 6 a simple structure is obtained by combining the substantially vertical sections close to a row of inspection conduits to form two substantially vertical sections 21 close to and on each side of the row of inspection conduits 6.
  • the horizontal screen sections should preferably be constructed with two separate horizontal layers 28 of metal sheets, spaced vertically apart.
  • the oven roof comprises, from bottom to top, firstly a plurality of courses of silica bricks 22, close to the coking chambers 2 and the combustion chambers 5, possibly a plurality of courses of chamotte bricks 23 and several courses of porous refractory insulation bricks 24.
  • at least the horizontal sections 17 of the screen 15 should preferably be installed in the part of the roof containing the porous refractor insulation bricks.
  • the gas-tight screen 15 shown in Figure 6 is basically the same as that shown in Figures 4 and 5, although the screen is of a much simpler design because between the vertical inspection conduits 6 and the charging conduits 8 the roof consists substantially of moulded bricks 14 only, so that there is much less room available for the screen to be installed in the roof 3.
  • the screen 15 has substantially horizontal sections 17 and substantially vertical sections 18 formed from metal sheets.
  • the screen 15 is arranged to form a gas-tight connection with the moulded bricks at the top of conduits 6 and 8. Furthermore the substantially vertical sections 18 of the screen 15 close to a row of inspection conduits are combined to form vertical sections 21 close to and on each side of the inspection conduits.
  • the substantially vertical sections 21 shown in Figure 6 are arranged to be substantially in line with the vertical parts of the stepped top sections 20 shown in Figure 5.
  • the substantially horizontal sections 17 at the screen shown in Figure 6 are arranged to be substantially in line with the horizontal parts of the stepped top sections 20 shown in Figure 5.
  • the tie rods are installed in that section of the oven roof on the opposite side of the screen 15 from the coking chambers so that the tie rods 25 are protected from temperature increases due to gas leakage.
  • the tie rods may be provided with additional protection against temperature increases by means of thermal insulating material 26 installed in the screened section of the oven roof.
  • stepped sections 20 of the substantially vertical sections 18 shown in Figure 5 may be provided with additional vertical parts 29 to form channels 30 (see Figure 1) for the tie rods 25 which channels extend substantially the entire length of the tie rods in the roof, the channels consisting of stepped sections- 20 and additional sections 29 in Figure 5 and of sections 17, 18 and 21 in Figure 6 respectively.
  • the additional vertical parts 29 are also provided with thermal insulating material 26, so that the tie rods are fully sealed and insulated from the oven roof.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Secondary Cells (AREA)
  • Carbon And Carbon Compounds (AREA)
EP83201442A 1982-10-29 1983-10-07 Coke oven battery Expired EP0107878B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83201442T ATE17019T1 (de) 1982-10-29 1983-10-07 Koksofenbatterie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8204187 1982-10-29
NL8204187A NL8204187A (nl) 1982-10-29 1982-10-29 Kooksovenbatterij.

Publications (2)

Publication Number Publication Date
EP0107878A1 EP0107878A1 (en) 1984-05-09
EP0107878B1 true EP0107878B1 (en) 1985-12-18

Family

ID=19840489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83201442A Expired EP0107878B1 (en) 1982-10-29 1983-10-07 Coke oven battery

Country Status (8)

Country Link
EP (1) EP0107878B1 (enrdf_load_stackoverflow)
JP (1) JPS5993789A (enrdf_load_stackoverflow)
KR (1) KR860000285B1 (enrdf_load_stackoverflow)
AT (1) ATE17019T1 (enrdf_load_stackoverflow)
CA (1) CA1227766A (enrdf_load_stackoverflow)
DE (1) DE3361571D1 (enrdf_load_stackoverflow)
ES (1) ES8406532A1 (enrdf_load_stackoverflow)
NL (1) NL8204187A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418139U (enrdf_load_stackoverflow) * 1987-07-24 1989-01-30
JPH0776339B2 (ja) * 1988-05-24 1995-08-16 ルールコーレ アクチエンゲゼルシヤフト コークス炉の天井
CN113583688A (zh) * 2021-07-15 2021-11-02 中国一冶集团有限公司 一种焦炉燃烧室充气密封装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE512334C (de) * 1927-11-22 1931-02-13 Koksofenbau U Gasverwertung A Koksofen
DE515538C (de) * 1928-08-19 1931-01-07 Arthur Killing Decke fuer Koksoefen
US2216983A (en) * 1937-10-16 1940-10-08 Fuel Refining Corp Underfired coke oven
NL8101060A (nl) * 1981-03-05 1982-10-01 Estel Hoogovens Bv Horizontale kooksovenbatterij.

Also Published As

Publication number Publication date
KR840006822A (ko) 1984-12-03
ES526852A0 (es) 1984-08-01
EP0107878A1 (en) 1984-05-09
KR860000285B1 (ko) 1986-03-26
ATE17019T1 (de) 1986-01-15
DE3361571D1 (en) 1986-01-30
JPS5993789A (ja) 1984-05-30
ES8406532A1 (es) 1984-08-01
JPS6213392B2 (enrdf_load_stackoverflow) 1987-03-26
CA1227766A (en) 1987-10-06
NL8204187A (nl) 1984-05-16

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