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
  • C10B27/00—Arrangements for withdrawal of the distillation gases
  • C10B27/04—Arrangements for withdrawal of the distillation gases during the charging operation of the oven
• • 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
  • C10B33/00—Discharging devices; Coke guides
• • 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
  • C10B33/00—Discharging devices; Coke guides
  • C10B33/003—Arrangements for pollution-free discharge
• • 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
  • C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
  • C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases

Definitions

• the invention relates to a method for generating a negative pressure in a coke oven chamber during the Ausdschreib- and loading process, are sucked out of a coke oven chamber by the harmful fumes, which arise in particular during the loading and Ausdschreibvorganges a coke oven chamber, so that they are not in the Environment.
• the invention also relates to a device for generating a negative pressure in a coke oven chamber.
• the operation of the coke oven came mern takes place usually cyclically. After a certain period of time, the coking is completed and the coke is removed from the coke oven chamber. This is done in a cycle of squeezing, whereby the coke gets into a cart for onward transport or into a cooling device. The coke oven chamber is then reloaded with fresh coal. Since a coke oven chamber usually holds only a limited amount of coal, several coke oven chambers are combined to form a coke oven bank. This allows the coke production to be continuous.
• US 3844901 A describes a device for extracting dusty hot gases consisting of a tapered roof supported by buttresses, the top of the roof being above the source of emissions, and the top Zone of the roof, a thermal expansion zone is formed, wherein in the upper zone of the roof, a suction channel which extends over the entire length of the roof and whose cross-section widens towards the suction source, and the suction channel is provided with bulge openings to a uniform To ensure suction vacuum over the entire length of the suction channel.
• the structure is claimed for all processes and chemical processes, but is particularly suitable for horizontal coke oven chambers, with the roof located above the coke oven chamber door, so that the emission of flue gases into the roof is in the top of the opening of the suction channel.
• the roof runs along the entire front of the coke oven chamber. The construction is stationary and requires a lot of space in front of the coke oven chamber doors, which is not available for coke oven loading machines, for example.
• GB 365934 A describes coke oven chambers with a gas collection chamber above the coke cake, wherein the coke cake is provided with openings through openings in the coke oven chamber ceiling through which the gases exiting during the coking are drawn off, which via a connecting pipe in a Suction pipe to be sucked, which is connected to all coke oven chambers, and there are devices for controlling the pressure between the connecting pipe and the gas collecting pipe.
• the pressure in the gas collection chamber above the coke cake is adjusted by adjusting the suction pressure to the particular stage of the coking process. An extraction of the flue gases during squeezing and loading is not described.
• the application of channels in the coke cake before the coking process is expensive.
• GB 447036 discloses a process for the distillation and coking of coal which are heated in coking retorts, these coking retorts being arranged in rows to coke oven benches, the coal being progressively heated so that it is dried and distilled until it becomes a coke oven Temperature has reached 600 ° C, whereby it is cooled.
• the retorts may be provided with vertical heat transport channels, which may also be used to extract the coking gases by a vacuum, which in one embodiment of the method are connected to the flue gas channels below the coking retort. In this way, a negative pressure can be sucked into the gas space of the coking retort via the flue gas ducts. As a result, a coking coal with controlled utilization of the coking gases can be achieved.
• a process step for the special suction of the flue gases during the squeezing and loading is not described.
• EP 1230321 B1 describes a method for the discharge of hot raw gases which are formed when coking in furnace chambers of a coke oven battery, wherein the raw gases are withdrawn from the furnace chambers at a temperature of 600 to 1000 ° C and introduced into a hot gas template without lowering the raw gas temperature, and the pressure in the furnace chambers is measured and regulated independently of the pressure level of the hot feed by shut-off and throttling means located in the hot gas streams between the raw gas outlet of the furnace chambers and the hot melt, and their position in dependence on the measured pressure in the associated furnace chamber is controlled, and the gas is supplied from the hot gas template of a steam boiler control or a cleavage reactor.
• the hot raw gases produced during the coking can be supplied to complete combustion or splitting without further treatment and without lowering the raw gas temperature, without the coking process in the furnace chambers being influenced thereby.
• the hot gas template is held to generate the vacuum under a slight negative pressure.
• the method does not disclose a process step of rapidly exhausting flue gases during the loading and ejection process.
• the said methods or devices have the disadvantage that a special process step for the suction of the gases is not provided.
• this process step must be specially provided for this purpose, because only at the time of squeezing and loading substantial amounts of pollutant flue gas by opening the coke oven chamber doors get outside.
• the invention solves this problem by an intake system for negative pressure, which performs the suction through the Sekundäreuerraum via channels through the side walls, so that in the gas space above the coke cake, which is also called primary heating space, for the duration of opening the Koksofenhuntten and the expressing and loading the coke or coal cake, an increased negative pressure in the furnace is produced.
• the coke oven chamber contains channels in the side walls, and these
• Channels connect the upper, coke-free part of the coke oven chamber on the gas side with the combustion system below the coke oven chamber, and which is characterized in that
• the suction is started 5 minutes before the opening of the coke oven chamber doors and completed 30 minutes after closing the coke oven chamber doors. This ensures optimal extraction of the flue gases from the coke oven chamber. In an exemplary embodiment of the invention, suction is continued for up to 4 hours after closing the doors.
• the flue gases can be sooty.
• Typical negative pressures which are required for complete extraction of the flue gases, are -20 to -50 Pa in the primary heating space in the vicinity of the coke oven chamber doors.
• the exhaust gas design from the Sekundäreuerraum and the air supply can be temporarily shut off in the Primärsortraum.
• negative pressures of up to -120 Pa can also be achieved.
• the flue gas sucked off according to the invention can be reused as desired.
• the vacuum reservoir is then under increased negative pressure and is briefly connected to the opening of the coke oven chamber door with the Sekundäreuerraum.
• the negative pressure in the Primäreuerraum is sufficient to reliably prevent leakage of gases from the coke oven chamber.
• the negative pressure in the combustion system below the coke oven chamber is thus generated by a vacuum reservoir, which is connected to the Sekundäreuerraum via a lockable secondary line, which is briefly connected for the process of suction with the Sekundäreuerraum, so that through the channels a negative pressure in the gas space above of the coke cake is sucked.
• the vacuum collecting container can be separated from the Sekundäreuerraum after evacuation by suitable devices and evacuated again.
• the negative pressure in the combustion system is generated by an arranged outside the coke oven chamber vacuum-carrying vacuum line, being sucked via a branch line, the negative pressure in the gas space above the coke cake through the channels.
• This vacuum line can be arranged anywhere in the vicinity of the coke oven chamber or the coke oven bank. Possible is an example of an arrangement under half of the coke oven chamber doors. But it is also possible an arrangement on the coke oven chamber ceiling.
• Claimed is also a device for generating a negative pressure in a coke oven chamber during the Ausdrück- and loading process, comprising
• Coke cake is loadable, being located above the coke cake, a gas space in which the coking intended for coal is heated after filling, and
• the coke oven chamber in the sidewalls contains channels, and these channels connect the upper, coke-free part of the coke oven chamber on the gas side to the combustion system below the coke oven chamber, and which is characterized in that
• the combustion system below the coke oven chamber is equipped with outgoing secondary ducts, through which the combustion system can be subjected to a negative pressure, so that
• At least one of the outgoing secondary channels is equipped with a regulating device.
• the shutter mechanism is designed in the connection between the vacuum reservoir and Sekundäreuerraum. If the vacuum reservoir is small and designed to accommodate increased negative pressure, the shutter mechanism must open quickly and completely. In this case, a slider is suitable as an example. This opens the secondary channel between Vakuumvorlage employer and Sekundäreuerraum short and complete, so that on Sekundärutzraum and the intermediate channels sufficient negative pressure in the Primärsortraum arises. If, on the other hand, the vacuum reservoir has a large volume in relation to the required negative pressure, then, for example, a spindle suffices for fine dosing.
• a channel which contains a regulating device for the vacuum, which connects the secondary heating chamber to the suction side of a sucking device is claimed it is the regulating device is a slider.
• the regulating device is a slider.
• a channel is claimed which uses a flap as the regulating device.
• the method according to the invention and the device used for this purpose have the advantage that, when the coke oven chamber doors are opened, a negative pressure is briefly generated in the gas space above the coke cake, so that the flue gases which arise during the ejection after the doors have been opened, Instead of going outside, be sucked into the interior of the Primäreuerraumes, this procedure and the consequent device requires neither on the coke oven chamber nor in front of the coke oven chamber space. Unwanted emissions into the atmosphere and the release of flue gases, which pose a risk to the environment and personnel, are thus avoided.
• FIG. 1 shows the side view of a coke oven chamber (1) which contains a primary heating space (2) and a secondary heating space (3).
• the gases formed during the coking flow into the primary heating chamber (2), where they are partially burned and the partially burned coking gas via channels (4) in the side walls of the coke oven chamber (1) or in the coke cake (5) in the Sekundäreuerraum (3 ) located under the coke cake (5). There it is completely burned, whereby the coke cake (5) is heated from below.
• the completely burned coking gas is an exhaust gas version (6) with shut-off device (6a), which opens into an exhaust duct (6b). Also visible are the openings (4a) of the "downcomer" channels in the primary heating chamber (2), via which vacuum is drawn in.
• FIG. Figure 2 shows the side view of a coke oven chamber (1) containing a primary heating space (2) and a secondary heating space (3), with a vacuum generating and pressure regulating vacuum line (14) in addition on the ceiling of the coke oven chamber (1) exemplified in GB 365934 A.
• a vacuum line (14) which is connected to all coke oven chambers. This is provided for attachment to the coke oven chamber (1) with a holder (14a). Via a connecting line (14b) with valve (14c) and pressure regulating device (14d), the pressure in the primary heating chamber (2) of the coke oven chamber (1) is regulated during operation.
• the connecting pipe valve (14c) is closed during the suction phase of the vacuum via the downcomer pipe (4) so that the pressure regulating means (14d) is not connected to the coke oven chamber (1) during the suction phase
• the doors (7) of the coke oven chamber (1) are opened, so that the coke cake (5) can be expressed, and the wall (7a) above the coke oven chamber door (7) can still be seen the opening of the coke oven chamber (7) via the "downcomer" channels (4) sucked a negative pressure to suck the flue gases back into the coke oven chamber (1).
• U-tube-shaped openings (8a) on the ceiling there are simple openings (8c) which are equipped with an openable flap (8d).
• the first of the doors (7b) is open for loading, the other (7) closes off the coke oven chamber (1).
• the carriage (15) is mounted on rollers (15b), which in turn are located at ground level (16).
• the exhaust passage (6b) is arranged underground, wherein before the shut-off valve (6a) of the exhaust passage of the inlet of the secondary channel (10) is located. This is provided with a valve, which is opened here (10b). Characterized the secondary channel (10) is connected to the vacuum reservoir (11) and sucked from this a negative pressure. At the end of the suction direction, connected via the Sekundärteilraum (3) and the "downcomer" channels (4), the coke oven chamber (1).

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Public Health (AREA)
• Coke Industry (AREA)
• Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2009
  • 2009-11-11 DE DE102009052502A patent/DE102009052502A1/de not_active Ceased
• 2010
  • 2010-10-28 WO PCT/EP2010/006603 patent/WO2011057719A1/de active Application Filing
  • 2010-10-28 EA EA201290270A patent/EA201290270A1/ru unknown
  • 2010-10-28 KR KR1020127014621A patent/KR20120091310A/ko not_active Application Discontinuation
  • 2010-10-28 JP JP2012538217A patent/JP2013510910A/ja active Pending
  • 2010-10-28 CN CN2010800504287A patent/CN102666788A/zh active Pending
  • 2010-10-28 US US13/503,199 patent/US20120247939A1/en not_active Abandoned
  • 2010-10-28 BR BR112012010854A patent/BR112012010854A2/pt not_active IP Right Cessation
  • 2010-10-28 AU AU2010318333A patent/AU2010318333A1/en not_active Abandoned
  • 2010-10-28 EP EP10778551A patent/EP2499216A1/de not_active Withdrawn
  • 2010-10-28 MX MX2012005446A patent/MX2012005446A/es not_active Application Discontinuation
  • 2010-10-28 NZ NZ599533A patent/NZ599533A/en not_active IP Right Cessation
  • 2010-10-28 CA CA2778789A patent/CA2778789A1/en not_active Abandoned
  • 2010-11-10 AR ARP100104168A patent/AR078961A1/es not_active Application Discontinuation
  • 2010-11-10 TW TW099138640A patent/TW201124518A/zh unknown
• 2012
  • 2012-04-17 ZA ZA2012/02790A patent/ZA201202790B/en unknown
  • 2012-05-04 CL CL2012001185A patent/CL2012001185A1/es unknown
  • 2012-06-04 CO CO12093134A patent/CO6551714A2/es active IP Right Grant

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