WO2011126043A1 - コークス炉のガス道内補修方法およびガス道内補修装置 - Google Patents

コークス炉のガス道内補修方法およびガス道内補修装置 Download PDF

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Publication number
WO2011126043A1
WO2011126043A1 PCT/JP2011/058696 JP2011058696W WO2011126043A1 WO 2011126043 A1 WO2011126043 A1 WO 2011126043A1 JP 2011058696 W JP2011058696 W JP 2011058696W WO 2011126043 A1 WO2011126043 A1 WO 2011126043A1
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WIPO (PCT)
Prior art keywords
gas passage
pipe
mortar
coke oven
peripheral surface
Prior art date
Application number
PCT/JP2011/058696
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English (en)
French (fr)
Japanese (ja)
Inventor
行良 服部
隆太郎 上野
一則 鈴木
Original Assignee
新日本製鐵株式会社
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 新日本製鐵株式会社 filed Critical 新日本製鐵株式会社
Priority to JP2011528124A priority Critical patent/JP4917188B2/ja
Priority to CN201180017224.8A priority patent/CN102844407B/zh
Priority to KR1020127025843A priority patent/KR101428351B1/ko
Priority to BR112012025356-5A priority patent/BR112012025356B1/pt
Publication of WO2011126043A1 publication Critical patent/WO2011126043A1/ja

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    • 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
    • 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
    • C10B45/00—Other details

Definitions

  • the present invention relates to a repair method and a repair device in a gas passage for a coke oven.
  • the present application claims priority based on Japanese Patent Application No. 2010-087954 filed in Japan on April 6, 2010, the contents of which are incorporated herein by reference.
  • each furnace consists of a pair of carbonization chambers and combustion chambers arranged in a plurality of rows alternately in the furnace width direction.
  • the combustion chamber is adjacent to the carbonization chamber via a furnace wall made of brick, and is partitioned into 20 to 30 small combustion chambers (flues) in the furnace length direction.
  • the bottom of each small combustion chamber leads to a preheating heat storage chamber.
  • Fuel gas whose flow rate is adjusted by the fuel gas cock and air whose flow rate is adjusted by the air cock are used for each preheating through the gas path from the under jet pipe. It is supplied to the heat storage chamber.
  • generated in each small combustion chamber is heat-recovered while it is stored in the heat-recovery heat storage chamber. Thereafter, the exhaust gas is discharged to a horizontal flue (sole flue) provided at the bottom of the furnace and collected in the collecting flue.
  • the exhaust gas is distributed to the two flues provided at two locations, the coke side (CS) and the pusher side (PS), and then discharged from the chimney to the atmosphere.
  • the preheating storage chamber is called “standing side”
  • the heat recovery storage chamber is called “pulling side”
  • the standing side and the drawing side have a combustion cycle (for example, a control cycle of 20 to 30 minutes). It is switched alternately every time (for example, refer to Patent Document 1).
  • MG Mixed Gas
  • BFG Blast Furnace Gas
  • COG Coke Oven Gas
  • a coke oven is a structure made of refractory bricks, and a gas passage is also made of refractory bricks like a coke oven.
  • FIG. 4 is a schematic diagram of the coke oven 200.
  • Each of the carbonization chambers 105 is disposed adjacent to the combustion chamber 103 and is charged with pulverized coal (coarse coal) 106 supplied from above.
  • the fuel gas 101 is supplied from the basement (not shown) provided below the coke oven 200 to the combustion chamber 103 through the gas passage 102.
  • the fuel gas 101 is combusted 104 in the combustion chamber 103, and the supply amount of the fuel gas 101 is managed so that the inside of the combustion chamber 103 is maintained at a temperature of about 1200 ° C.
  • the pulverized coal 106 is dry-distilled to form coke.
  • the coke is extruded out of the furnace from the carbonization chamber 5 by an unillustrated extruder.
  • FIG. 5 is a schematic cross-sectional view of the gas passage 102.
  • a fuel gas (not shown) is supplied to the gas passage 102 through the under jet pipe 107.
  • the gas passage 102 is constructed of bricks 108 (refractory bricks).
  • the inner peripheral surface 102 a of the gas passage 102 is exposed to a high temperature of 1000 ° C. or higher when the fuel gas 101 is burned. For this reason, a damaged portion 110 such as a crack or a joint breakage occurs in the brick 108 exposed on the inner peripheral surface 102a due to aging or long-time combustion.
  • the fuel gas 101 leaks from the damaged portion 110, so that the temperature of the flue does not rise (the temperature in the gas passage 102 is not sufficiently raised).
  • the temperature of the flue does not rise (the temperature in the gas passage 102 is not sufficiently raised).
  • coking of coal in the carbonization chamber 105 becomes insufficient, and when the coke is discharged (extruded) from the coke oven 200, the coke may be clogged into the coke oven 200 and not extruded. For this reason, the operation of the coke oven 200 may be adversely affected.
  • the present invention has been made in view of such circumstances, and it is easy to repair a damaged portion such as a brick crack in a gas passage or a joint breakage, and allows mortar to penetrate deep into the damaged portion.
  • An object of the present invention is to provide a method and apparatus for repairing a coke oven gas passage.
  • a gas passage repair method is a method of repairing a damaged portion of a gas passage of a coke oven, maintaining a predetermined gap with respect to the inner peripheral surface of the gas passage, and Inserting and arranging the first pipe so that the upper end is positioned in the gas passage; pressing the mortar into the gap from the lower side to the upper side in the vertical direction; overcoming the upper end of the first pipe; Recovering the mortar that has entered the pipe.
  • the gap between the lower end of the gas passage and the lower portion of the first pipe may be sealed before the mortar is pressed into the gap. Good.
  • a gas passage repair device is a device for repairing a damaged portion of a gas passage of a coke oven, maintaining a predetermined gap with respect to the inner peripheral surface of the gas passage, and A first pipe disposed so that an upper end is located in the gas passage; a sealing portion that seals between a lower portion of the first pipe and a lower end of the gas passage; penetrating through the sealing portion A press-fit portion communicating with the gap; a mortar supply portion for press-fitting mortar into the gap through the press-fit portion; the remaining mortar provided at the lower portion of the first pipe and overcoming the upper end of the first pipe And a recovery unit for recovering.
  • the sealing portion includes a screw portion that covers the first pipe at a predetermined interval from its periphery and is screwed to the lower end of the gas passage.
  • the inner diameter of the gas passage may be equal to the outer diameter of the two pipes.
  • the repair method in the gas passage according to the above (1), pressure is applied to the mortar by pressing the mortar into the gap from the bottom to the top of the gas passage. For this reason, the mortar comes into contact with a damaged part such as a brick crack or joint breakage while receiving a high pressing force. Therefore, the mortar can be penetrated deep into the damaged portion, and a high repair effect can be obtained.
  • the mortar since the mortar is pressed into the gap with the upper end of the first pipe positioned in the gas passage, the damaged portion is repaired by the mortar up to the height of the upper end of the first pipe. Therefore, the repair range in the gas passage can be easily set by adjusting the upper end position of the first pipe.
  • the mortar by pressing the mortar into the gap, the mortar is pushed up from the lower side to the upper side of the gas passage with pressure applied. For this reason, the mortar can be penetrated deep into the damaged part of the brick, and a high repair effect can be obtained. Moreover, the upper end position of the repair range in the gas passage can be easily set by adjusting the upper end position of the first pipe.
  • the space between the lower portion of the first pipe and the lower end of the gas passage is tightly sealed. For this reason, leakage of mortar from the sealing portion can be prevented.
  • the second pipe is screwed to the lower end of the gas passage so that the inner peripheral surface of the gas passage and the outer peripheral surface of the second pipe are in close contact with each other. For this reason, leakage of mortar from the sealing portion can be effectively prevented.
  • FIG. 1A is a longitudinal sectional view showing the gas passage repair device 30, and FIG. 1B is a plan view of the gas passage repair device 30 as viewed from above.
  • the gas passage repair device 30 is schematically configured from a first pipe 11 and a sealing portion 15. Outer diameter D 11 of the first pipe 11 is smaller than the inner diameter D 2 of the gas path 2 which will be described later.
  • a recovery unit 23 capable of recovering mortar is provided below the first pipe 11.
  • the sealing part 15 consists of the 2nd pipe 12 and the baseplate 13, and seals between the lower part of the 1st pipe 11, and the lower end 2b of the gas path 2 mentioned later.
  • the 2nd pipe 12 is arrange
  • the inner diameter D 12 of the second pipe 12 is larger than the outer diameter D 11 of the first pipe 11, as shown in FIG. 1B in plan view, arranged to the second pipe 12 and the first pipe 11 is concentrically Has been.
  • the outer diameter D 13 of the second pipe 12 is preferably equal to the inner diameter D 2 of the gas path 2 which will be described later.
  • the second pipe 12, threadedly engaged portion so as to surround the outer peripheral surface 12b 1 (male screw portion 15a) is provided.
  • the male screw portion 15a is screwed to the lower end 2b of the gas passage 2 described later.
  • a press-fit portion 14 for press-fitting mortar is provided at the lower portion of the second pipe 12 so as to penetrate the bottom plate 13 and communicate with the gap 12c.
  • a mortar supply unit 19 capable of press-fitting mortar into the gap 12 c via the press-fit part 14 is provided at the lower end of the press-fit part 14.
  • a stopper 16 and a handle 17 are provided on the outer peripheral surface 12 b 1 of the second pipe 12.
  • the stopper 16 is made of, for example, a ring-shaped plate material, and is provided below the male screw portion 15a.
  • the shape of the handle 17 is not limited as long as the handle 17 is provided below the stopper 16 and can rotate around the second pipe 12.
  • the bottom plate 13 is made of, for example, a ring-shaped plate material, and is provided so as to close the inner peripheral surface 12b 2 and the outer peripheral surface 11b of the first pipe 11 at the lower end 12a 2 of the second pipe 12.
  • FIG. 2 is a schematic cross-sectional view showing a method for repairing the gas passage 2 of the coke oven 50 using the in-gas passage repair device 30 shown in FIGS. 1A and 1B.
  • an under jet pipe (not shown) fixed to the lower part of the gas passage 2 is removed.
  • a hearth bed 18 is provided at the lower part of the gas passage 2, and the under jet pipe is screwed to the lower end 2 b of the gas passage 2 by a female screw portion 15 b.
  • the upper end 12a 1 of the upper end 11a and the second pipe 12 of the first pipe 11 of the gas canal repair device 30 is inserted from below into the gas path 2.
  • the male screw portion 15 a of the second pipe 12 is screwed into the female screw portion 15 b, and the second pipe 12 is fixed to the lower end 2 b of the gas passage 2.
  • the male screw portion 15a and the female screw portion 15b can be easily screwed together.
  • the second pipe 12 is inserted into the gas passage 2 until the stopper 16 comes into contact with the lower surface 18a of the hearth plate 18 by screwing the male screw portion 15a and the female screw portion 15b.
  • the female screw portion 15b is provided on the inner peripheral surface 18b of the hearth plate 18 from the viewpoint of ease of fixing the second pipe 12 and the gas passage 2, but the second pipe 2
  • the female screw portion 15b may not be provided on the inner peripheral surface 18b.
  • an elastic body made of rubber or plastic that is brought into close contact with the inner peripheral surface 18b is provided on the outer peripheral surface 12b 1 of the second pipe 12, and a second pipe 12 and the hearth plate 18 Fix it.
  • the 1st pipe 11 is arrange
  • the upper end 11 a of the first pipe 11 is arranged so as to be located in the gas passage 2.
  • the upper end 12a 1 of the second pipe 12 is arranged so as to be positioned for example within the hearth plate 18.
  • the mortar 20 is press-fitted from the vertical direction downward to the upper side from the mortar supply part 19 of the press-fitting part 14 using a mortar press-fitting machine (not shown).
  • the mortar 20 has a gap 12c between the outer peripheral surface 11b of the first pipe 11 and the inner peripheral surface 12b 2 of the second pipe 12, and the outer peripheral surface 11b of the first pipe 11 and the inner peripheral surface 2a of the gas passage 2.
  • pressure is applied to the mortar 20 by press-fitting the mortar 20 into the gap 11c from below to above.
  • the mortar 20 contacts the damaged portion 10 such as a crack or a joint breakage of the brick 8 of the coke oven 50 with a high pressing force.
  • the mortar 20 penetrates 21 to the back of the damaged portion 10.
  • the mortar 20 used in the present embodiment a known mortar can be used.
  • the amount of water in the mortar 20 may be adjusted as appropriate so as to maintain fluidity and pumpability to penetrate the damaged portion 10 when the mortar 20 is press-fitted into the gap 11c.
  • the pressure when the mortar 20 is pressed into the gas passage 2 may be appropriately adjusted according to the height at which the mortar 20 is pushed up or the water content of the mortar 20. If the pressure is too low, the mortar 20 cannot be pushed up to a predetermined height in the gas passage 2 (for example, a height of 2 m or more from the upper end of the hearth bed 18), which is not preferable because workability decreases. . On the other hand, if the pressure when the mortar 20 is pressed into the gas passage 2 is too high, the mortar 20 may be pushed up to a height higher than a necessary height (for example, a height from the hearth 18 to 5.5 m). This is undesirable.
  • a necessary height for example, a height from the hearth 18 to 5.5 m
  • the mortar 20 pushed up to the height of the upper end 11a of the first pipe 11 gets over the upper end 11a and overflows (enters) into the first pipe 11d.
  • the mortar 20 that has entered the first pipe 11d moves to the mortar outlet 22 through the first pipe 11d, and is then collected by the collection unit 23.
  • the press-fitting of the mortar 20 into the gap 11c is stopped.
  • the gas passage repair device 30 is removed from the gas passage 2.
  • surplus mortar 20 is discharged below the gas path 2.
  • surplus mortar 20 remaining inside the gas passage 2 is removed by a cleaning wire (not shown) to ensure the flowability of the fuel gas.
  • the mortar 20 in the damaged portion 10 remains without being removed.
  • the mortar 20 is applied to the mortar 20 by pressing the mortar 20 into the gap 11c of the gas passage 2 and pushing it upward from below. For this reason, the mortar 20 contacts the damaged portion 10 of the gas passage 2 while receiving a high pressing force. Therefore, the mortar 20 can penetrate deeply into the damaged part 10, and a high repair effect can be obtained for the damaged part 10. Further, by inserting the mortar 20 into the gap 11c with the upper end 11a of the first pipe 11 being positioned in the gas passage 2, the mortar 20 pushed up to the height of the upper end 11a exceeds the upper end 11a. It enters 11d in the first pipe. Thereby, the height of the upper end of the repair range in the gas passage 2 can be easily set by adjusting the height of the upper end 11 a of the first pipe 11.
  • the sealing portion 15 includes the second pipe 12 and the bottom plate 13, the male screw portion 15 a is screwed to the female screw portion 15 b, whereby the outer peripheral surface 12 b 1 of the second pipe 12 is connected to the gas path 2. Can be firmly fixed to the inner peripheral surface 2a. For this reason, leakage of the mortar 20 from the sealing portion 15 can be effectively prevented.
  • the inner diameter D 2 of the gas passage 2 is equal to the outer diameter D 13 of the second pipe 12, by screwing the male screw portion 15a into the female screw portion 15b, and the inner circumferential surface 2a of the gas path 2 second 2 and the outer peripheral surface 12b 1 of the pipe 12 are in close contact. For this reason, leakage of the mortar 20 from the sealing portion 15 can be effectively prevented.
  • the gas passage 2 of the coke oven 50 was repaired using the gas passage repair device 30 shown in FIGS. 1A and 1B.
  • an under jet pipe (not shown) was removed from the gas passage 2.
  • the upper end 11 a of the first pipe 11 and the upper end 12 a 1 of the second pipe 12 of the gas passage repair device 30 were inserted into the gas passage 2 from below.
  • the male screw portion 15 a was screwed into the female screw portion 15 b, and the second pipe 12 was fixed to the lower end 2 b of the gas passage 2.
  • the outer peripheral surface 11 b is arranged so as to maintain a predetermined gap 11 c between the outer peripheral surface 11 b and the inner peripheral surface 2 a of the gas passage 2, and the upper end 11 a of the first pipe 11 is positioned in the gas passage 2.
  • the mortar 20 mainly composed of SiO 2 and adjusted to a moisture addition of 30 mass% and a consistency of 380 is pushed up by 1.5 kg / cm 2 from the mortar supply unit 19 of the press-in unit 14 using a mortar press-in machine (not shown). Press-fitted with pressure. As a result, the mortar 20 was sequentially pushed up into the gap 12c and the gap 11c. Then, when the mortar 20 began to be collected by the collection unit 23, the press-fitting of the mortar 20 into the gap 11c was stopped. Then, the state which pushed up the mortar 20 in the clearance gap 11c was maintained for 1 minute. Thereafter, it was confirmed that the mortar 20 in the gap 11c started to harden, and the gas passage repair device 30 was removed from the gas passage 2.
  • the fiberscope was inserted into the gas passage 2 again and the state of the inner peripheral surface 2 a was observed. As a result, the entire surface of the inner peripheral surface 2 a was covered with the mortar 20. In addition, it was confirmed that the mortar 20 was filled deeply into the crack 9, 10 parts of joints, and a portion where the brick was missing.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
PCT/JP2011/058696 2010-04-06 2011-04-06 コークス炉のガス道内補修方法およびガス道内補修装置 WO2011126043A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2011528124A JP4917188B2 (ja) 2010-04-06 2011-04-06 コークス炉のガス道内補修方法およびガス道内補修装置
CN201180017224.8A CN102844407B (zh) 2010-04-06 2011-04-06 炼焦炉的气道内修补方法及气道内修补装置
KR1020127025843A KR101428351B1 (ko) 2010-04-06 2011-04-06 코크스로의 가스 연도 내 보수 방법 및 가스 연도 내 보수 장치
BR112012025356-5A BR112012025356B1 (pt) 2010-04-06 2011-04-06 método para preparar o interior de conduto de gases e equipamento para reparar o interior do conduto de gases

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010087954 2010-04-06
JP2010-087954 2010-04-06

Publications (1)

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WO2011126043A1 true WO2011126043A1 (ja) 2011-10-13

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JP (1) JP4917188B2 (zh)
KR (1) KR101428351B1 (zh)
CN (1) CN102844407B (zh)
BR (1) BR112012025356B1 (zh)
WO (1) WO2011126043A1 (zh)

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WO2020140083A3 (en) * 2018-12-28 2020-08-13 Suncoke Technology And Development Llc Coke plant tunnel repair and flexible joints
US10968395B2 (en) 2014-12-31 2021-04-06 Suncoke Technology And Development Llc Multi-modal beds of coking material
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US11008517B2 (en) 2012-12-28 2021-05-18 Suncoke Technology And Development Llc Non-perpendicular connections between coke oven uptakes and a hot common tunnel, and associated systems and methods
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CN102844407B (zh) 2014-04-16
JP4917188B2 (ja) 2012-04-18
BR112012025356A2 (pt) 2016-06-28
KR20120136380A (ko) 2012-12-18
JPWO2011126043A1 (ja) 2013-07-11
KR101428351B1 (ko) 2014-08-07
CN102844407A (zh) 2012-12-26

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