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
  • C10B15/00—Other coke ovens
  • C10B15/02—Other coke ovens with floor heating
• • 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
• • 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
• • 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
  • C10B5/00—Coke ovens with horizontal chambers
  • C10B5/06—Coke ovens with horizontal chambers with horizontal heating flues
• • 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
  • F27D99/00—Subject matter not provided for in other groups of this subclass
  • F27D99/0001—Heating elements or systems

Definitions

• the invention relates to a coke oven in a horizontal design (non- / heat recovery type), the at least one coking chamber, arranged laterally thereto vertical exhaust channels ("down corner") and horizontally and below the coking chamber arranged bottom channels for indirect heating of Coking chamber comprises, wherein one or more heating elements are arranged in the gas space, which is not provided for the filling of solid in the normal operation of the coke oven.
• Coke ovens in a horizontal design are known in the art and often in use. Examples of such coke ovens are described in US 4,111,757, US 4,344,820, US 6,596,128 B2 or DE 691 06 312 T2.
• DE 10 2005 025955 proposes the multiple supply of combustion air, which is realized via a distribution system, which is arranged substantially on the furnace roof. Through this distribution system, combustion air is passed from above through the furnace roof through many openings in the furnace chamber. This system of supplying combustion gas represents a significant improvement over the central introduction of combustion air through openings in the oven door. However, there remains a need to improve the gas flow in the coke oven. oven and to reduce coking time, thus improving the efficiency of the process.
• This object is achieved by the Koksofen defined in the main claim in a horizontal design (non- / heat recovery type).
• This coke oven comprises at least one coking chamber, laterally arranged thereto vertical exhaust ducts (down corner) as well as horizontally and below the coking chamber arranged bottom channels for indirect heating of the coking chamber, being provided in the gas space, which is not intended for the filling with solid in the normal operation of the coke oven, one or more heating elements are arranged.
• the heating elements may have any shape and are ideally formed as a hanging ribs or hanging walls and can be further improved to the effect that they have openings or a partially open structure.
• the heating elements can be attached in any manner in the oven chamber.
• the tertiary heating elements are releasably suspended in suitable brackets, the brackets being mounted in the wall and / or ceiling of the coking chamber. This has the advantage that, on the one hand, the tertiary heating elements can be removed more easily when work on the coke oven chamber is required and, on the other hand, it is thus avoided that expansion processes are transferred into the furnace masonry.
• a further improved embodiment of the coke oven is to adapt the gas guide to the positioning of the heating elements.
• the gas guide in a sectional subdivision of the coking chamber by the heating elements, in each of these sections at least one air supply line is led out and led out of each of these sections one or two exhaust ducts (down corner).
• An improved variant of the coke oven is that at least a part of the inner walls of the coking chamber and / or a part of the Surfaces of the heating elements are formed as secondary heating surfaces by being coated with a high emission coating (HEB), wherein the emissivity of this high emission coating is equal to or greater than 0.9.
• HEB high emission coating
• This HEB is preferably made of the materials Cr 2 O 3 or Fe 2 O 3 or from a mixture containing these substances, wherein the proportion of Fe 2 O 3 in a mixture at least 25 wt .-% and the proportion of Cr 2 O 3 in a mixture is at least 20% by weight.
• the HEB may also contain SiC in a proportion of at least 20% by weight.
• the HEB further contains one or more inorganic binders. It has also been found that the ingredients of the HEB should have a specific grain size that is less than or equal to 15 microns and ideally between 2.5 and 10 microns.
• the radiation situation in the coke oven space is significantly improved and further accelerated from top to bottom coking.
• the coke oven can be further improved to the effect that the walls of the flue gas ducts running horizontally below the coking chamber are completely or partially coated with HEB in one of the above-described composition, whereby the indirect heat transport through the bottom of the coke oven is improved becomes.
• the invention also includes a method for producing coke using the coke oven described above, wherein one of the embodiments is used. As a rule, a large number of the described coke ovens are operated more or less in parallel.
• FIG. 1 shows a sectional view of the coke oven according to the invention.
• the coke oven 1 has a furnace roof 2, furnace walls 3 and a furnace bottom 4, which surround the furnace chamber 5.
• the introduced coal bed 7 rests on the oven floor 4 and flue gas ducts 8 run below the oven floor 4.
• the air supply lines 10 provided in the furnace foundation 9 are shown in cross-section through which air into the flue gas ducts 8 can be directed.
• the inner surfaces of the furnace chamber 5 are provided with a HEB, which consist of equal parts of Cr 2 O 3 , Fe 2 O 3 and SiC.
• This HEB the inner walls, making them to secondary heating surfaces, has not been shown.
• heating elements 12, tertiary heating surfaces, are introduced vertically and parallel to one another, which largely fill the free cross section above the carbon charge 7, which are likewise coated with this HEB.
• the heating elements 12 are on holding elements 13, which here have the form of wall and Deckenankem attached.
• a small, circumferential gap 14 remains between the inner wall surfaces of the oven chamber 5, the coal bed 7 and the outer edge of the heating element 12 to allow horizontal convection in the oven chamber 5 and to prevent material damage due to differences in the expansion behavior of the components.
• Fig. 2 shows the coke oven 1 according to the invention in a further sectional view.
• the reference numerals of Fig. 1 apply analogously.
• Clearly visible is the subdivision of the oven chamber 5 by the heating elements 12 in six sections, wherein in each section air supply 6 lead ren and the openings 15 and the flue gas ducts 8 and 11 gas can leave the oven chamber 5 again.
• the introduction of combustion air in the Oven sections adjacent to the oven door 16 are for air inlets 6 provided in the oven door 16 itself.
• the heating elements 12 are fastened to retaining elements 13 which are provided in the furnace roof 2 and the furnace wall 3 for this purpose.
• a special suspension for the heating elements 12 is shown in a sectional drawing, wherein the adjoining the oven door 16 Abschitt the coke oven 1 is shown.
• the hanging in the oven chamber 5 heating element 12 is spaced with a gap 14 from the coal bed 7.
• the heating element 12 is fastened in the furnace roof 2 via one or more retaining elements.
• This holding element consists essentially of a ceiling plate 17, a pull rod 18 and a bottom plate 19.
• the pull rod 18 is inserted through a ceiling opening 20 and is held by the ceiling plate 17, which simultaneously closes the ceiling opening 20 completely. Furthermore, the pull rod is guided from top to bottom through the heating element 12 and installed in this.
• the main weight of the heating element 12 rests on the bottom plate 19 of the holding element, which is fastened to the lower end of the pull rod 18.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Coke Industry (AREA)
• Furnace Housings, Linings, Walls, And Ceilings (AREA)
• Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (1)

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• 2006
  • 2006-09-21 DE DE102006045056A patent/DE102006045056A1/de not_active Ceased
• 2007
  • 2007-09-04 TW TW096132864A patent/TWI445812B/zh not_active IP Right Cessation
  • 2007-09-07 AP AP2009004792A patent/AP2539A/xx active
  • 2007-09-07 EP EP07802202A patent/EP2064302A1/de not_active Withdrawn
  • 2007-09-07 US US12/311,151 patent/US8764944B2/en not_active Expired - Fee Related
  • 2007-09-07 CA CA002663541A patent/CA2663541A1/en not_active Abandoned
  • 2007-09-07 RU RU2009114852/05A patent/RU2441899C2/ru not_active IP Right Cessation
  • 2007-09-07 MY MYPI20091106A patent/MY148757A/en unknown
  • 2007-09-07 AU AU2007299285A patent/AU2007299285B2/en not_active Ceased
  • 2007-09-07 NZ NZ575316A patent/NZ575316A/en not_active IP Right Cessation
  • 2007-09-07 MX MX2009003052A patent/MX2009003052A/es active IP Right Grant
  • 2007-09-07 CN CN200780034997.0A patent/CN101517036B/zh not_active Expired - Fee Related
  • 2007-09-07 KR KR1020097005541A patent/KR20090060297A/ko not_active Application Discontinuation
  • 2007-09-07 BR BRPI0716868-3A patent/BRPI0716868A2/pt not_active Application Discontinuation
  • 2007-09-07 JP JP2009528616A patent/JP5578848B2/ja not_active Expired - Fee Related
  • 2007-09-07 UA UAA200903923A patent/UA96163C2/ru unknown
  • 2007-09-07 WO PCT/EP2007/007812 patent/WO2008034531A1/de active Application Filing
  • 2007-09-20 AR ARP070104167A patent/AR062926A1/es not_active Application Discontinuation
  • 2007-09-21 CL CL2007002739A patent/CL2007002739A1/es unknown
• 2009
  • 2009-03-24 CO CO09030077A patent/CO6170369A2/es active IP Right Grant

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