EP0353702A1 - Vorrichtung zur Behandlung trockengekühlten Kokses - Google Patents

Vorrichtung zur Behandlung trockengekühlten Kokses Download PDF

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Publication number
EP0353702A1
EP0353702A1 EP89114164A EP89114164A EP0353702A1 EP 0353702 A1 EP0353702 A1 EP 0353702A1 EP 89114164 A EP89114164 A EP 89114164A EP 89114164 A EP89114164 A EP 89114164A EP 0353702 A1 EP0353702 A1 EP 0353702A1
Authority
EP
European Patent Office
Prior art keywords
coke
buffer silo
water
cooled
dust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89114164A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wilhelm Dr. Stewen
Hans Klaus Dr. Schott
Ernst-Wilhelm Franke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuettner GmbH and Co KG
Original Assignee
Kuettner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuettner GmbH and Co KG filed Critical Kuettner GmbH and Co KG
Publication of EP0353702A1 publication Critical patent/EP0353702A1/de
Withdrawn legal-status Critical Current

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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
    • C10B39/00—Cooling or quenching coke

Definitions

  • the invention relates to a device for spraying water from coke that is dry to about 200 degrees Celsius, in which the coke is cooled to a temperature of ⁇ 80 degrees Celsius.
  • the coke is cooled dry in dry coke cooling plants. Dry coke cooling is a method that has been known for a long time, but has not yet been widely used. Most of the coke glowing from the furnace is still extinguished with water.
  • a gas is used for cooling instead of water.
  • the gas is circulated, with heat exchangers and dedusters also being provided in the gas circuit.
  • the heat exchangers absorb or dissipate the heat contained in the gas, so that the gas is suitable for further heat absorption or for recirculation and cooling.
  • the dedusters prevent the heat exchanger surfaces from clogging up or from being covered with a strong dust layer which prevents heat transfer.
  • the dry-cooled coke develops considerable amounts of dust. These amounts of dust do not constitute a disruptive factor when the coke is transported from the coking plant to a connected blast furnace system via closed belt systems. However, the dust has a disruptive effect on various transports and the like from the location of the coke-drying cooling system to the location of the blast furnace system. Whenever the coke is turned over, whole clouds of dust are released. The dust clouds are such an environmental pollution that measures must be taken to prevent them.
  • the invention is also based on the object of avoiding dust formation.
  • the invention assumes that an effective dust reduction is achieved when coke is at a temperature between about 200 o C and 80 o C with water sprayed.
  • the dust development during handling is then only a function of the final water content (in weight percent) of the coke. It was found that with such a procedure the water does not penetrate deep into the coke, but is located in a more or less thick edge layer of the individual pieces of coke.
  • Cooling on the conveyor belt between the coke-dry cooling and the screening plant is particularly suitable for realizing the method described above.
  • the coke from the coke-drying cooling system which is around 200 ° C, could be easily cooled down to about 80 ° C by spraying water.
  • the amount of water required can be determined according to the fact that it is complete at the end of the conveyor belt evaporated.
  • a carrier gas air can be conducted, which is able to absorb the entire amount of water vapor produced and, if possible, to remove it below the dew point.
  • the buffer silo 1 with a buffer silo is designated, which has a capacity of 160 m3.
  • the buffer silo 1 is designed as a round silo and has a diameter of approx. 5 m.
  • the cylindrical height of the buffer silo is approx. 8 m.
  • the cooled coke is discharged from the buffer silo from four outlets 2 in order to achieve a uniformly lowering of the coke layer in the buffer silo 1.
  • the buffer silo is fed by a belt conveyor 3, the 1200 mm wide belt at a speed of about 1.4 m / sec. running.
  • water nozzles 4 are installed, which spray the dropped coke layer from both sides and give up a part of the required water.
  • the coke reaches a rotating chute 5 which distributes the coke in constantly new, but thin layers into the bunker forming the buffer silo.
  • further water nozzles 6 are installed, which are activated when the rotary chute 5 is below them. The actuation of the water nozzles 6 can take place with a time offset, e.g. B. offset by 180 degrees to the rotary chute 5 to perform post-cooling.
  • the buffer silo 1 is operated so that its fill level is as uniform as possible.
  • the amount of water metered in is determined via the amount of coke determined by a belt scale in belt 3 and the coke temperature determined in the area of the belt scale.
  • the coke temperature can, for. B. with an infrared camera.
  • an air volume of approx. 75,000 Nm3 / h is passed through the buffer silo 1. - About a third of the air volume is sucked in via the incoming conveyor belt 3 - About two thirds of the air volume is sucked in via the discharge cones 2 of the buffer silo 1
  • a suction channel 7 Approximately in the middle of the cylindrical part of the buffer silo is a suction channel 7, which is guided around the buffer silo and can be opened or closed section by section. The entire amount of air and steam is disposed of via the suction duct 7.
  • the arrangement of the air duct ensures that the buffer silo is flowed through in cocurrent in the upper part and in countercurrent in the lower part. The result of this is that the droplets that do not reach the coke pieces during the water jet are introduced into the coke layer with the air stream (in the cocurrent section), that the vapor vapors are drawn through the coke layer and the remaining cooling and drying of the coke takes place in the counterflow section.
  • the gas flow through the buffer silo 1 is set such that the desired cooling of the coke is achieved uniformly over the bunker cross-section.
  • the entire buffer silo is insulated and lined with a wear layer.
  • the bunker wall is additionally heated in the area above the suction (7) and the ceiling. For this, steam is used that condenses. With the accompanying heating 8 of the ceiling and wall as well as in the area of the material transfer to the silo, it is avoided that a stalactite effect can develop and, as a result, corrosion damage can occur in the buffer silo.
  • the suction path of the gas from the buffer silo 1 is designed as a heat exchanger. The path is double-walled. Steam is condensed in the outer annular gap. This ensures that the exhaust gases from the bunker are overheated in such a way that there is a distance from the dew point of approximately 20 degrees C.
  • a cloth filter as a dedusting unit, which with dry dust contents of less than 25 mg / Nm3 discharges dry coke dust, which is conveyed pneumatically to the dust silo of the screening plant.
  • the filter is completely insulated, can be accompanied with steam in the clean gas section and in the discharge cone heated. Behind the filter is the suction that connects the buffer silo and the vapors. The induced draft directs the gases to a chimney.
  • the inside of the fireplace is rubberized to protect it from corrosion.
  • the approximately 75,000 Nm3 of air and the approximately 13,000 Nm3 of steam are derived from the water evaporation via the chimney.
  • the coke is discharged at temperatures ⁇ 80 degrees C and a water content ⁇ 0.5%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
EP89114164A 1988-08-02 1989-08-01 Vorrichtung zur Behandlung trockengekühlten Kokses Withdrawn EP0353702A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826192 1988-08-02
DE19883826192 DE3826192A1 (de) 1988-08-02 1988-08-02 Vorrichtung zur behandlung trockengekuehlten kokses

Publications (1)

Publication Number Publication Date
EP0353702A1 true EP0353702A1 (de) 1990-02-07

Family

ID=6360064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114164A Withdrawn EP0353702A1 (de) 1988-08-02 1989-08-01 Vorrichtung zur Behandlung trockengekühlten Kokses

Country Status (2)

Country Link
EP (1) EP0353702A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3826192A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994113A (zh) * 2011-12-21 2013-03-27 山西鑫立能源科技有限公司 煤热解炉的焦炭的输送、分级、储备装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755100C2 (de) * 1997-12-11 2003-10-02 Rag Ag Verbesserter Kokstrockenkühlschacht und dessen Verwendung zur Verbesserung des Strömungsverhaltens in Kokstrockenkühlanlagen
KR100393023B1 (ko) * 1999-09-20 2003-07-31 신닛뽄세이테쯔 카부시키카이샤 코우크스 건식 소화 방법 및 소화 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE491592C (de) * 1926-06-04 1930-02-13 Richard Feige Verfahren zum Abloeschen von feinkoernigem Koks oder Halbkoks
FR2286182A1 (fr) * 1974-09-25 1976-04-23 Dravo Corp Procede et appareil de refroidissement de coke
FR2445363A1 (fr) * 1978-12-27 1980-07-25 Didier Eng Installation de refroidissement a sec de coke
EP0192277A2 (de) * 1985-02-21 1986-08-27 Still Otto GmbH Verfahren zur Kühlung und Entstaubung von Koks nach Verlassen der Kokstrockenkühlung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE491592C (de) * 1926-06-04 1930-02-13 Richard Feige Verfahren zum Abloeschen von feinkoernigem Koks oder Halbkoks
FR2286182A1 (fr) * 1974-09-25 1976-04-23 Dravo Corp Procede et appareil de refroidissement de coke
FR2445363A1 (fr) * 1978-12-27 1980-07-25 Didier Eng Installation de refroidissement a sec de coke
EP0192277A2 (de) * 1985-02-21 1986-08-27 Still Otto GmbH Verfahren zur Kühlung und Entstaubung von Koks nach Verlassen der Kokstrockenkühlung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994113A (zh) * 2011-12-21 2013-03-27 山西鑫立能源科技有限公司 煤热解炉的焦炭的输送、分级、储备装置

Also Published As

Publication number Publication date
DE3826192A1 (de) 1990-02-08
DE3826192C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-09-24

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