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
  • C10B5/00—Coke ovens with horizontal chambers
  • C10B5/02—Coke ovens with horizontal chambers with vertical heating flues
• • 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
  • C10B21/00—Heating of coke ovens with combustible gases
  • C10B21/10—Regulating and controlling the combustion
• • 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
  • C10B21/00—Heating of coke ovens with combustible gases
  • C10B21/20—Methods of heating ovens of the chamber oven type
  • C10B21/22—Methods of heating ovens of the chamber oven type by introducing the heating gas and air at various levels

Definitions

• the invention relates to a coke oven with gas heating trains, where each heating train is provided with at least two gas feeds and two air feeds, the second gas feeder alternatively serving as an additional air feed.
• a coke oven design is known from DE-OS 39 00 860.
• the aim is to keep the NO x generated during the combustion process as far as possible below certain predetermined limit values.
• the advantages of the coke ovens according to the invention are, in particular, the diverse regulation options for op- Heating and to minimize the pollutants, in particular N0 X , in the flue gas in bivalent coke ovens, which can alternatively be operated in lean gas and / or high gas operation.
• FIG. 1 and 1 a show a cross section through a coke oven battery in connection with the conduit for air, gas and exhaust gas in a two-part schematic illustration, FIG. 1 showing the left side and FIG. 1 a the right side of the coke oven battery ,
• FIG. 2 shows a section through a heating wall
• FIG. 3 shows, as a detail from FIG. 2, two heating trains
• FIG. 4 shows a partial cross section through the regenerator area
• FIG. 5 shows a partial cross section through a coke oven battery.
• FIG. 1 and 1 a show two coke ovens 2, 3 of a coke oven battery 1, in which oven chambers 4 are delimited on both sides by heating walls 5.
• the heating walls 5 contain a large number of heating trains 6, 7, see also FIG. 2, which correspond to one another in that the gas combustion takes place in the heating trains 6 and the hot exhaust gases are removed in the heating train 7. From time to time the heating system is changed so that the combustion tion of the gases in the heating element 7a and the removal of the hot exhaust gases in the heating element 6a. This is based on the fact that the coke ovens 2, 3 are operated in regenerator mode (FIGS. 4 and 5).
• regenerator chamber 40 is alternately supplied with the exhaust gas from the heating trains 7 and 6a, which heats up the regenerator trim 42, and the regenerator trim 42 warms the low-pressure gas or air flowing through after each changeover, before the latter Media in the heating cables 6 and 7a.
• the coke ovens 2, 3 can be heated bivalent.
• this gas passes from weak gas channels 44 via regenerator 40 and weak gas channels 20 or 2la and, on the other hand, the air from air channels 45 also via regenerator 40 and air channels 22 or 23a into heating trains 6 or 7a .
• the exhaust gas from the heating trains 7 and 6a is returned to the regenerators 40 via exhaust gas channels 21, 23, 25 and 20a, 22a, 24a and discharged via exhaust gas channels 46, 47.
• the strong gas arrives from a strong gas line 26 via gas supply lines 8, 9 and via gas branch lines 12, 13 in gas feed lines 16, 17 or 16a, 17a and is led from there into the heating cables 6, 7a.
• an air line 32 is provided, to which air supply lines 10, 11 or exhaust gas supply lines 10a, 11a connect, which in turn are connected via air branch lines 14, 15 or exhaust branch lines 14a, 15a in air supply lines 18, 19 or exhaust gas supply lines 18a, 19a pass from which the heating cables 6, 7a can be charged with additional air or with exhaust gas as exhaust agent.
• additional air can be introduced through the channels 20a or 21a during high-gas operation if the air from the channels 22, 24 or 23a, 25a is not sufficient to ensure adequate combustion of the high-pressure gas.
• additional air or additional high-pressure gas can be introduced into the heating trains 6, 7a.
• additional air or exhaust gas can be detected in the heating trains 6, 7a in order to optimize the combustion process or the NO x content of the flue gases.
• the high-pressure gas line 26 is once equipped with a control flap 28.
• it has a shut-off valve 29, which can be bypassed by a bypass line 27, which in turn has a control flap 30 for fine gas control "in order to meter in small amounts of heavy gas during low-gas operation.
• the bypass line 27 can in turn be shut off by a shut-off device 31 , if the rough control via the control flap 28 is sufficient with high-gas heating.
• the air line 32 alternatively the exhaust line 32a f also has a control flap 33. While the feeds to the air channels 22, 24 or 23a, 25a in the usual way (not shown here) through the chimney via air inlet flaps into the regenerators 40 and further is sucked into the heating cables 6, 7a and the height and If the diameter of the chimney or the exhaust gas temperature and the temperature of the outside air are decisive for the incoming air, the additional air or the exhaust gas is expediently introduced with the aid of a fan 34.
• the switch from aviation to exhaust gas travel is achieved in that the air inlet is closed by a blind flange 32 and the chimney fox 35 is connected by opening a shut-off valve 38. To switch back to forced air travel, the chimney fox can be pushed off via a plug-in disk 37.
• outlets or inlets to the regenerators 40 can be equipped with slides 43.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Combustion & Propulsion (AREA)
• Coke Industry (AREA)
• Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6457756

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Citations (4)

• 1992
  • 1992-04-29 DE DE19924214137 patent/DE4214137C1/de not_active Expired - Fee Related
• 1993
  • 1993-04-27 WO PCT/EP1993/001019 patent/WO1993022398A1/de not_active Ceased
  • 1993-04-27 EP EP93909849A patent/EP0638113B1/de not_active Expired - Lifetime

Patent Citations (4)

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