Classifications

• • 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
  • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
• • C—CHEMISTRY; METALLURGY
  • C21—METALLURGY OF IRON
  • C21B—MANUFACTURE OF IRON OR STEEL
  • C21B7/00—Blast furnaces
  • C21B7/10—Cooling; Devices therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B1/00—Shaft or like vertical or substantially vertical furnaces
  • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
  • F27B1/24—Cooling arrangements
• • 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
  • F27D9/00—Cooling of furnaces or of charges therein
  • F27D2009/0002—Cooling of furnaces
  • F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
  • F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium

Definitions

• the invention relates to a cooling plate with a reinforcing part, for example a reinforced head and / or foot end, for shaft furnaces provided with a refractory lining, blast furnaces and hot metal-producing melting vessels, in particular also COREX ® melter gasifiers, consisting of copper or a low-alloy copper alloy with coolant channels arranged in its interior , wherein the cooling plate is made of a forged or rolled ingot, the cooling channels are vertically extending blind bores and wherein webs and grooves are incorporated on the side facing the interior of the shaft furnace.
• Such cooling plates are usually arranged between the jacket and the lining and connected to a cooling system.
• the cooling elements are partially provided with refractory material.
• a cooling plate is known in which the cooling channels are formed by pipes cast in cast iron and the lower edge of the plate body is designed as a support lug for the refractory masonry.
• the support nose is also connected to the cooling system.
• Plates made of cast copper are also known, in which the cooling channels are either formed by cast-in pipes or are cast in directly by molding.
• the structure of cast copper is not as homogeneous and dense as that of forged or rolled copper. As a result, the heat conduction of copper casting worse and the strength less.
• an oxide layer between the pipe and the copper block prevents heat conduction.
• a cooling plate which is made from a forged or rolled ingot and where the cooling channels are vertical blind holes which are made by deep mechanical drilling.
• the structure of the cooling plate is much denser and more homogeneous than that of a cast copper plate. Blowholes, as they often occur with cast copper plates, are excluded by the forming process. The strength values are higher and the thermal conductivity is more uniform and higher than that of the cast copper plates. Due to the mechanical production of the bores, the target position is exactly adhered to in terms of height and side, and this ensures uniform heat dissipation.
• the cooling plate is lined with refractory stones or with a refractory ramming compound on the side facing the furnace interior.
• a cooled shaft furnace with a steel jacket is known, with the inside of which cooling plates are connected to substantially vertical inner tubes which penetrate the steel jacket at the upper and lower ends of the cooling plate.
• the cooling plate is provided on the side facing away from the steel jacket with a retaining cam or a retaining lug through which another tube, which runs in a substantially horizontal plane and has connections led through the steel jacket, runs, at least some of the vertical tubes extending stretches over a substantial part of the vertical dimension.
• a cooler for evaporative cooling of a blast furnace which consists of a plate with a projection arranged transversely near the end of the plate and of tubes which are mounted in the plate and in the said projection, exists and in which a coolant flows.
• the inlet and outlet ends of these tubes are arranged at different heights on the side opposite the projection.
• the pipe for the circulation of the coolant in the projection is designed in such a way that it is arranged in the projection in such a way that the and outlet ends are between the outlet ends of the pipes laid in the plate.
• the ends of the parts of the circulation tube in the cantilever, which are located inside this cantilever, are arranged at an angle of 2 to 4 "in the vertical, so that the circulation of the coolant is increasing from the inlet end to the outlet end of the tubes.
• Cooling elements for a shaft furnace are known from US Pat. No. 4,071,230, which are fastened to the inside of the furnace shell.
• the rectangular cooling element is composed of five metal blocks arranged one above the other, with gaps, which are attached to two vertically running pairs of cooling pipes by means of suitable fastening elements.
• the pairs of pipes with lower cooling water inlet and upper cooling water inlet are led through openings in the metallic furnace wall, the metallic blocks are only cooled on the outside of the side facing the blast furnace shell.
• EP 0 705 906 AI discloses a cooling plate made of a forged or rolled copper ingot, in which cooling channels are introduced for cooling the edge zones in addition to the vertically running blind holes, which are vertical or horizontal blind holes of smaller diameter around the vertically arranged blind holes in the Edges are introduced.
• a disadvantage of these rolled or forged copper cooling plates is that the load-bearing capacity of the masonry or the facing masonry at the head ends of the cooling plate is not optimal and the service life of the refractory ramming compounds or FF bricks is therefore not sufficient.
• EP 0 731 180 B1 describes a cooling plate with a reinforced and cooled head end.
• the cooling channels on the reinforcement are characterized by their arrangement, or by the fact that they are produced by vertical and horizontal blind bores.
• the cooling medium is supplied and removed via cooling pipes. These can be included in the cooling system of the shaft furnace.
• a disadvantage of this variant is the complicated and cumbersome production of the cooled head part, which often requires retooling of the tools in the production of the blind bores. Several welds or soldering points are necessary to seal these blind holes tightly. These places are due to the manufacturing process very close to the process room and are prone to failure. It is therefore desirable to keep the number of these positions as small as possible.
• the cooling duct surface which is required to achieve the necessary cooling capacity, is limited by the geometric design of the refractory support.
• the object of the invention is therefore to provide a cooling plate with reinforcing part, in the cooling and heat dissipation in this reinforcing part is also carried out uniformly and homogeneously, so that there is also an improved cooling of the refractory furnace lining and the furnace shell is guaranteed.
• the necessary welds should be reduced to a minimum and at the same time the available heat exchange area should be increased.
• At least one additional cooling segment is provided, which is provided with a cooling channel, into which a displacement body is inserted.
• a bead for the refractory masonry can also be forged from the rough copper block; the cooling channels are drilled in this bead in the known manner.
• the displacement body is designed as a cavity for guiding the coolant.
• the displacement body expediently has passages which allow the passage of cooling medium from the cooling channel into the interior of the displacement body and from this back into the cooling channel.
• Cooling water holes in the cooling channel Cooling water holes in the cooling channel.
• Displacement bodies are screwed.
• the holes for the supply and discharge of cooling water can be horizontal or sloping.
• Fig. 1 shows a horizontal section through the cooling plate with attached
• Fig. 2 shows a cross section through the cooling plate with a forged bead
• Fig. 3 shows a cross section through a releasably attached cooling segment
• cooling plate 1 shows a horizontal section through the cooling plate 1 with, for example, five vertically arranged blind bores 3 and with the cooling channel 5 formed in the cooling segment 4 and formed by a horizontal bore and the displacement body 6 used.
• the supply of the cooling water in the blind bores 3 takes place from below via the tube attachments 2 connected to the coolant supply lines, in the cooling channel 5 formed by the horizontal bore of the cooling segment 4 also via tube pieces 2. Bores 7 are also arranged in the cooling plate 1 in order to To ensure cooling water supply and discharge through the pipe lugs 2 through the wall of the blast furnace.
• the cooling circuits of the cooling plate 1 and the cooling segment 4 can be connected to the cooling system both as separate cooling circuits or as a common cooling circuit.
• the displacement body 6 has passages 11 which allow the passage of cooling water from the cooling channel 5 into the interior of the displacement body 6 and from this back into the cooling channel 5. The direction of flow of cooling water is indicated by arrows.
• Fig. 2 shows a section through the cooling plate 1 with the vertically arranged blind holes 3, which are closed in a known manner either at the lower or upper end by welding or soldering points.
• the cooling water is supplied or removed via the pipe sections 2.
• a cooling bead 8 forged out of the ingot, is fitted, into which the cooling channel 5 formed by the horizontal bore is introduced.
• a displacement body 6 is in turn inserted in this to ensure the corresponding flow velocity.
• the supply and discharge of cooling water takes place here via oblique bores 7.
• a pipe section 12 is inserted, which is guided into the displacement body 6 and screwed to it.
• the coolant is supplied and discharged into or out of the displacement body 6, while in the embodiment shown in FIG. 1 it takes place in or out of the cooling channel 5.
• FIG. 3 shows a detachably attached cooling segment 4, into which a cooling duct 5 formed by a horizontal bore is introduced.
• the displacement body 6 is shown.
• this horizontal bore 5 is connected to the cooling circuit via horizontal bores 7 in the cooling plate 1 and subsequently via pipe lugs 2 through the wall of the tank.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Furnace Housings, Linings, Walls, And Ceilings (AREA)
• Blast Furnaces (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=3688563

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (7)

• 2001
  • 2001-10-17 AT AT0165501A patent/AT410717B/de not_active IP Right Cessation
• 2002
  • 2002-10-08 EP EP02782852A patent/EP1436561A1/de not_active Withdrawn
  • 2002-10-08 BR BR0213419-5A patent/BR0213419A/pt not_active IP Right Cessation
  • 2002-10-08 WO PCT/EP2002/011240 patent/WO2003033979A1/de not_active Application Discontinuation
  • 2002-10-08 US US10/492,875 patent/US20040256772A1/en not_active Abandoned
  • 2002-10-08 KR KR1020047004947A patent/KR20050034581A/ko not_active Application Discontinuation
  • 2002-10-08 CN CNA028205510A patent/CN1571909A/zh active Pending

Non-Patent Citations (1)

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