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
  • C10B29/00—Other details of coke ovens
  • C10B29/02—Brickwork, e.g. casings, linings, walls
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D1/00—Casings; Linings; Walls; Roofs
  • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used

Definitions

• the present invention relates to a brick building structure of a chamber-type coke oven, a brick part of Royfa, which is a partition wall between a carbonization chamber and a combustion chamber, and a brick of a binder part, which is a partition wall of the combustion chamber flue. It relates to a brick wall structure of a coke oven with a wall. Background art
• the carbonization chambers and the combustion chambers are alternately arranged, and the partition walls between the carbonization chamber and the combustion chamber and the partition walls between the combustion chamber flues are both formed in a brick structure.
• the partition wall portion that separates the carbonization chamber 1 and the three rows of combustion chamber flues is referred to as the roy fur portion 4, and the partition wall portion that separates the combustion chamber flues 3 is referred to as the binder portion 5.
• the area where the fulu 3 and the coking chamber 1 face each other hereinafter also referred to as the "flue-facing part 6"
• the extension line range of the binder part for the royfer part 4 are shown. 8 (hereinafter also referred to as “intersection 7”).
• the furnace wall of the coke oven is a pressure generated by heat stress induced by uneven heating during construction and surface temperature difference during operation, coal expansion pressure during coal carbonization, side pressure during coke extrusion, etc. On the other hand, it must have sufficient strength and a sufficient margin for buckling.
• the coke oven is dry distillation by indirect heating through a single wall.
• the space between the combustion chamber flue and the carbonization chamber and the airtightness between adjacent combustion chamber flutes are important. Therefore, the single bricks that make up the coke oven wall It is necessary to obtain a shape that is strong against these thermal deformations and external forces, as well as airtightness and good thermal conductivity due to the combination of the bricks.
• Fig. 10 (a), Fig. 10 (b), Fig. 10 (c), Fig. 10 (d) and Fig. 10 (e) show typical brick-wall structures of furnace walls.
• the Royfer section facing the carbonization chamber one hammer 41 1 is placed in every other binder section.
• the mating surface of bricks and bricks with the arrangement of hammer bricks 41 as a staggered arrangement is called joint 44, and in each joint, Fig. 10 (c) As shown in FIG. 10 (d), it has an uneven fitting portion 45, which increases the strength of the brickwork structure and improves the sealing performance.
• Fig. 10 (b) as a result of stacking the hammer bricks 41 in a vertical stack, the vertical joints are arranged in a staggered manner without being continuous. For horizontal joints, it is common practice to load them horizontally.
• the vertical penetration crack 53 in the direction of the height of the Reuter furnace is frequently generated. If the vertical penetration crack 53 occurs, it will not be able to withstand the load when a vertical load is applied to the carbonization furnace wall, and the cracked brick will sink into the royfer.
• the present invention relates to a furnace wall brick structure of a furnace-type coke oven having bricks of a Royfer section that is a partition wall between a carbonization chamber and a combustion chamber and a brick of a binder section that is a partition wall between the combustion chamber flues.
• the purpose of the present invention is to provide a furnace wall brickwork structure that is easy to build brickwork without causing depression due to longitudinal cracks in the bricks of the Royfer section.
• the gist of the present invention is as follows.
• Royfa I Brick 1 1 is an L-shaped brick that integrates a part of the Royfer part 4 and a part of the Binder part 5, and the Royfer B brick 12 is a brick that forms part of the Royfer 7 — part 4.
• Royfer A brick 1 1 L-shaped corner has a shoulder 14 that can receive the B-type brick 12 at the position corresponding to the Royfer part, and a part of the mouth on the opposite side of the shoulder of the Royfer A brick 1 1
• the part is referred to as the royer end 15
• the shoulders 14 of the two Royfer A bricks 1 1 are opposed to each other, and both ends of the Royfer B brick 12 are received by the shoulders 14 of the two Royfer A bricks 1 1 to carbonize with the second combustion chamber flu 3b.
• Binder part 5 consists of two Royfa A bricks 1 1 and 2
• the brickwork structure separating the Flue 3 and the coking chamber 1 is alternately stacked with the structure where the Royfer A bricks 11 are in contact with each other and the structure formed by the Royfer B bricks 12.
• the distance between the binders of combustion chamber flue 3 is L.
• Royfa — A brick 11 The joints 16 between one end 15 of the royfa 15 are ⁇ 0.05L from the center of Flue 3.
• the width of the Royfer part of the Royfa A brick 11 is W
• the height of the Royfa A brick 11 is H
• Binder surface S to Loyfa end 15 is the Royfer length L.
• Royfer A brick 11 is characterized by having an R part at the corner part 18 where the leufa part 5 facing the combustion chamber flue 3 and the binder part 5 are in contact with each other (1) to (5) Coke oven wall brick structure as described.
• One or both of the Binder portion of the Reufer A brick 11 and the Binder brick 13 have a through hole 19, and the through hole 19 forms a duct of the binder part (1) to ( 6)
• FIG. 1 (a) is a plan view showing the brickwork structure of the present invention.
• Fig. 1 (b) is a plan view of the constituent bricks of the brickwork structure of the present invention.
• Fig.1 (c) is a plan view of the constituent bricks of the brickwork structure of the present invention.
• FIG. 1 (e), which is a plan view of a brick constituting a brick structure of the invention, is a side view showing the brick structure of the present invention.
• FIG. 2 is a plan view showing the roof tile stacking structure of the present invention.
• FIG. 3 (a) is a plan view showing the brickwork structure of the present invention.
• FIG. 3 (b) is a plan view showing the brickwork structure of the present invention.
• FIG. 3 (c) is a side view showing the brickwork structure of the present invention.
• FIG. 4 is a plan view showing the brickwork structure of the present invention.
• FIG. 5 is a perspective sectional view showing a brickwork structure of the present invention.
• FIG. 6 is a cross-sectional plan view showing the brickwork structure of the present invention.
• FIG. 7 (a) is a plan view showing the brick of the present invention.
• FIG. 7 (b) is a plan view showing the brick of the present invention.
• FIG. 8 is a plan sectional view showing the brickwork structure of the present invention.
• Fig. 9 (a) is a diagram showing names for each position of brickwork.
• Figure 9 (b) shows the name of each brickwork position.
• Fig. 10 (a) is a plan view showing a conventional brickwork structure.
• Figure 10 (b) is a side view showing a conventional brickwork structure.
• Figure 10 (c) is a plan view of a brick with a conventional brickwork structure.
• Fig. 10 (d) is a cross-sectional view taken along arrow D-D in Fig. 10 (c).
• Figure 10 (e) is a side view showing a conventional brickwork structure.
• the partition wall portion that separates the carbonization chamber 1 and the two rows of combustion chambers is referred to as a leufa part 4, and the combustion chamber flues 3 are separated from each other.
• the partition wall is called Binder part 5.
• the Royfer part 4 can be further divided into a part where the flues 3 and the coking chamber 1 are opposed to each other (the fuls face part 6) and a part within the extension line range 8 of the binder part (intersection part 7).
• the Royfer A brick 11 and the Royfer B brick 12 are essential.
• the Royfa I brick 11 is an L-shaped brick in which a part of the Royfer part 4 and a part of the binder part 5 are integrated.
• the Royfer A brick 11 includes an intersection 7 and includes a part of the Royfer part on one side in contact with the intersection 7 and a part of a binder part also in contact with the intersection.
• Royfer B brick 12 is part of the Royfer part It is a brick to be formed and has a roughly rectangular parallelepiped shape as shown in Fig. 1 (c).
• a first combustion chamber flue 3a and a second combustion chamber flue 3b are assumed as shown in FIG. 1 (a).
• the first combustion chamber flue 3a and the second combustion chamber flue 3b are alternately arranged.
• the leufer part that separates the first combustion chamber flue 3a and the carbonization chamber 1 is constituted by the contact of the leufa end portions 15 of two leufa A bricks (lla, lib).
• the shoulders 14 of the two Loifah A bricks (lla, 11c) face each other, and the two ends of the Loyfer B brick 12 are It consists of the shoulders 14 of two Roifer A bricks (lla, 11c).
• the shoulder 14 of the Royfa I brick 11 is formed at the intersection 7. Therefore, the joint surface (joint part ⁇ ) between the shoulder 14 of the Royfa A brick 11 and the end of the Royfer B brick 12 is the intersection 7, that is, a part of the Royfa and an extension line of the binder part. It will be placed within range 8.
• the royfer part is formed on both sides in contact with the carbonization chamber. And on both sides, a brickwork structure consisting of Reufer A brick and Reufer B brick is formed as described above.
• the end portions of the Binder portions of the Royfer A brick 11 may be joined together to form the binder portion 5, but FIG. 1 (a), FIG. 1 (b), FIG.
• another binder brick 13 may be arranged between the leufa A bricks 11 on both sides. It is preferable to arrange another binder brick 13 because the weight of the single Royfer A brick can be reduced.
• the bin Part of the da is formed by two royfa 1 bricks and a binder brick placed between the two royfer 1 bricks.
• the brickwork structure that separates the flue from the carbonization chamber is formed by the structure where the Royfer A bricks 11 are in contact with each other and the Royfer B bricks 12 as shown in Fig. 3 (c). Structures are stacked alternately. Thereby, the joint of the joint in the up-down direction can be prevented.
• bricks are piled on the one side assuming the first combustion chamber flue 3a, and the same on the other side. Brickwork may be performed assuming that the combustion chamber flue is the second combustion chamber free 3b.
• the L-shaped mouth furer A brick 1 1 is connected to the adjacent Royfer A brick 1 1 at the end of the roifer 15, and the binder part 5 Also built in. For this reason, even if a vertical load P is applied from the coking chamber side to the leufer end 15, it can withstand this vertical load with only one level of brickwork without depending on the rigidity of another adjacent level. Adjacent to the joint at the end of the Royfer end 15 is the Royfer B brick 12 on the adjacent step. L-shaped royfa 1 A brick Therefore, when the pressing load P is applied to the joint 16 between the end portions of the royfa, a force in the direction in which the joint 16 is closed is applied.
• the vertical joints formed in the Royfer part include the end of the Royfer B brick 12 and the Leofer A brick 1 1 A joint (joint portion 17) that contacts the shoulder portion 14 is formed.
• This joint is located in the intersection 7, that is, within the extension line range 8 of the binder (Fig. 1 (a), Fig. 1 (b), Fig. 1 (c), Fig. 1 (d), Fig. 1 (e)).
• Such joints have the feature that longitudinal cracks are difficult to form.
• the joints (joint portion 15) (formed on the flue facing portion 6) formed by the end portions of the leufer A brick 11 1 have longitudinal penetration cracks. Even if formed, cracks are difficult to grow and the furnace wall does not sink. Also Joints by Loroy Iffa AA Brick 11 11 and Loroy Iff BB Brick Brick 1122 ((joint joint 1177)) ((formed at intersection 77) )) In the first place, it is hard to form a vertical through-penetrating crack. . Therefore, the tortoise crack caused by the longitudinal through-through tortoise cracking according to the structure of the furnace wall of the invention of the present invention It is possible to prevent and prevent the collapse of the broken brick. .
• the Loroy IFFer AA brick tile's end of the ROI IFIFER end joint part is from the center of the ROLOY IFER ⁇ 00 .. 0055 LL. . If it is considered to be within the scope of the above, it will be possible to complete and maintain the resistance to cracking of Loroy Fir AA brick bricks. You can leave it as you like. .
• the thickness and thickness of the Loroy IF AA brick 11 11 is set to WW ((mmmm)), The height of the Loroy IFA AA brick 11 11 HH ((mmmm)), the Loroy IF 11 — The shoulder shoulder of the AA brick 11 11 11 11 The surface of the bibindander on the opposite side of the surface ((pipinndadar surface surface SS)), the distance of the true distance is BB ((iiii)), the surface surface surface of the bibindander SS The distance between the left and right ends of the Loroy IFer is the Loroy IFer length length LL. .
• P (kg) is the concentrated load applied to the joint between the ends of the roy fur A bricks
• b (kg / mm 2 ) means the allowable bending stress of the loy fur A bricks.
• the concentrated weight P is 2000kg. If the value of P is increased in the range of 2000kg to 5000kg, bricks with better durability can be obtained. In addition to have your ordinary silica brick, the ratio b is 0. 6 ⁇ 1. Okg / mm 2 about.
• the maximum tensile stress is applied to the base of the Royfer part and the base of the shoulder part of the Royfa A brick. If the dimension and shape satisfy the left side of ⁇ 1> type 2 above, the maximum tensile stress when concentrated load is applied can be kept within the allowable stress, and penetration cracks can be suppressed. In addition, it is possible to secure the strength and rigidity against bending stress of Roifer A brick. In addition, by balancing the values of H, W, and B, it is possible to achieve a balanced structure in which the weight of a single brick is as low as possible.
• brick processing (manufacturing) performance thickness and height without thermal deformation
• safety such as prevention of gas leakage can be ensured by suppressing the occurrence of through cracks (ensuring necessary thickness).
• necessary cross-sectional area to ensure heat transfer efficiency can be secured, and brickworkability can be improved (the number of stacks can be reduced).
• 1 3000 (mm 2 ) or less is more than necessary by making the width, depth and height of the brick close to each other. This is in order to avoid manufacturing problems associated with rigidity reduction, stress generation, and shape.
• the inter-binder distance L of the combustion chamber royfer If it is too narrow, the space of the combustion chamber will not be obtained and the combustion function will be hindered. If it is too wide, the length of the Royfer section will become long, and the rigidity of the Royfer brick and thus the rigidity of the furnace wall will be reduced. Binder distance L. If the range is 200 to 500 mm, these problems will not occur. Also, if the thickness W of the Royfer A brick is too thin, the rigidity of the Royfer brick, and consequently the rigidity of the furnace wall, will decrease, and if it is too thick, the heat transfer from the combustion chamber will drop, reducing the efficiency of the coke oven. .
• the Royfer thickness W is in the range of 90 to 130 mm, these problems will not occur.
• the height H of the Royfer A brick is too low, it will be necessary to increase the number of brick stacking steps in the height direction of the carbonization chamber, which will increase the labor for building bricks, and by reducing the thickness, This may induce deformation during the firing or firing stage, causing no perpendicularity on the brick structure, resulting in difficulty in building the furnace. If it is too high, the unit weight of the brick will increase, which will hinder handling. If the height H is in the range of 100 to 150, these problems will not occur.
• the Royfer brick of the present invention is substantially L-shaped, and the corner part where the Royfer part facing the combustion chamber flue and the binder part are in contact with each other. (Fig. 7 (a)).
• the radius of curvature of the R section should be at least about 1 ZS l ZS (about 50 mm) of the thickness of the Royfer brick W.
• Ducts for passing air used for multistage combustion may be installed in the binder section of the combustion chamber.
• one or both of the binder part of the leufa A brick 1 1 and the binder brick 13 have a through hole 19, and the through hole 19 forms a duct of the binder part. This is preferable because it can be used as it is as a duct for multistage combustion.
• the brick that forms joints in the royfer part is the royfer A brick
• the loyfa A brick is an L-shape that spans the leufa part and the binder part. Can withstand. Therefore, even if a longitudinal through crack is formed along the joint of the Royfer part, the brick will not sink into the flue.
• even the largest bricks are Royfa I bricks, which occupy only a part of the leufer part and part of the binder, so the weight of the brick alone is reduced compared to the one described in JP 2005-307003 A It is possible to build with less work load without reducing the height of the brick.

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• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Furnace Housings, Linings, Walls, And Ceilings (AREA)

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• 2006
  • 2006-11-21 JP JP2006314239A patent/JP4926667B2/ja active Active
• 2007
  • 2007-11-21 BR BRPI0719022A patent/BRPI0719022B1/pt active IP Right Grant
  • 2007-11-21 KR KR1020097010276A patent/KR101066790B1/ko active IP Right Grant
  • 2007-11-21 RU RU2009123518/05A patent/RU2410408C1/ru active
  • 2007-11-21 EP EP07849909.2A patent/EP2085455B1/en active Active
  • 2007-11-21 WO PCT/JP2007/072993 patent/WO2008062899A1/ja active Application Filing
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