EP1913115B1 - Verfahren und vorrichtung zur koksofentürreinigung - Google Patents

Verfahren und vorrichtung zur koksofentürreinigung Download PDF

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Publication number
EP1913115B1
EP1913115B1 EP06776647.7A EP06776647A EP1913115B1 EP 1913115 B1 EP1913115 B1 EP 1913115B1 EP 06776647 A EP06776647 A EP 06776647A EP 1913115 B1 EP1913115 B1 EP 1913115B1
Authority
EP
European Patent Office
Prior art keywords
jet nozzle
cleaning
jet
cleaned
coke oven
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.)
Active
Application number
EP06776647.7A
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German (de)
English (en)
French (fr)
Other versions
EP1913115A1 (de
Inventor
Frank Rossa
Hans-Josef Giertz
Friedrich Huhn
Jürgen GEORGE
Ralf Hoven
Detlef Mattern
Friedrich-Wilhelm Cyris
Joachim Strunk
Heinz Opdenwinkel
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.)
DMT GmbH and Co KG
ArcelorMittal Bremen GmbH
Original Assignee
DMT GmbH and Co KG
ArcelorMittal Bremen GmbH
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 DMT GmbH and Co KG, ArcelorMittal Bremen GmbH filed Critical DMT GmbH and Co KG
Publication of EP1913115A1 publication Critical patent/EP1913115A1/de
Application granted granted Critical
Publication of EP1913115B1 publication Critical patent/EP1913115B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C10B43/00—Preventing or removing incrustations
    • C10B43/02—Removing incrustations

Definitions

  • the invention relates to a method for coke oven door cleaning and a device suitable for this purpose.
  • a cooktop door cleaning apparatus which proposes both mechanical and high pressure fluid powered cleaning tools using water or steam to clean the coke oven door.
  • the JP 60 23 83 86 A discloses a method and apparatus for cleaning the gas channel of a door plug of a coke oven door.
  • the gas channel of the door plug is cleaned at the top with compressed air and at the bottom with high-pressure water.
  • the JP 52 00 58 04 A relates to a cleaning device for Gearlochdeckel and Grezien of coke ovens by means of nozzles through which a liquid or gas flows. A cleaning of sealing edges of coke oven doors is not disclosed.
  • DD 34 918 A a method for cleaning sealing surfaces of coke ovens, in particular the door frame, doors, filling and leveling holes is known in which the coke breeze is thrown with compressed air on the cleaning surfaces.
  • the invention has for its object to provide a simple cleaning method and a device suitable for the DMT door available, which is also suitable for other Matabdichtungssysteme.
  • the invention is based on the basic idea that the coke oven door is still so warm immediately after opening the coke oven chamber that a temperature of about 130 ° C. to 200 ° C. is present in the region of the sealing edges and the membrane.
  • a temperature of about 130 ° C. to 200 ° C. is present in the region of the sealing edges and the membrane.
  • the air which hits the surface to be cleaned at an acute angle of ⁇ 45 °, acts like a spatula or scraper. Caking is removed with little effort.
  • the jet nozzle element consists of a single jet nozzle.
  • jet nozzles which are arranged one behind the other and / or next to each other in the direction of movement.
  • the jet nozzle element consists of a jet nozzle pair with two jet nozzles arranged next to one another.
  • one jet nozzle cleans the gas channel of the DMT door and the other jet nozzle cleans the inside surface of the membrane.
  • the jet nozzle element consists of two jet nozzles arranged one behind the other.
  • the first jet nozzle is oriented so that the air hits the surface to be cleaned at an acute angle.
  • the second jet nozzle is aligned so that the air hits the surface to be cleaned at an obtuse angle (approximately 90 °) like a hammer blow.
  • a combination of hammering and scraper effect is also possible.
  • the jet nozzle element consists of a double jet nozzle pair.
  • the two front jet nozzles are aligned so that the air hits the surface to be cleaned at an acute angle, while the two rear jet nozzles hit the surface to be cleaned at an obtuse angle.
  • the cleaning effect of the at least one jet nozzle element can be increased by applying pulsating compressed air.
  • a pulsating air flow is generated by pulsator, the pulsation frequency can be adapted to the particular circumstances.
  • a further improvement of the cleaning effect can also be achieved by a rotating air jet, thereby increasing the size of the surface to be cleaned. As a result, an advantageous, hammer-like effect is also achieved.
  • a combination of pulsating and rotating air jet is also possible.
  • the cleaning effect of the cleaning method according to the invention can also be increased by reducing the opening cross-sections of the jet nozzles and / or increasing the air pressure through a compressor.
  • a single jet nozzle element travels the entire inside surface of the membrane and the sealing edges, while the jet nozzle element is initially driven in the lower door area from the middle to the left and right corner. Subsequently, the entire circumference of the door is traversed and in the lower area, the jet nozzle element is again driven back and / or back.
  • two jet nozzle elements each depart one half of the coke oven door seals.
  • jet nozzle elements i. H. two used for vertical and two for horizontal cleaning of the coke oven door.
  • the nozzle element is moved along the sealing edges, counter to the direction of movement of the air, which impinges on the surface to be cleaned at an acute angle. As a result, a cooling of the still to be cleaned sealing surface is largely avoided.
  • the device according to the invention consists of a housing into which the coke oven door to be cleaned is driven or placed.
  • this housing the at least one movable jet nozzle element is arranged.
  • This housing is located on the printing press or the Koksüberleitmaschine.
  • the doors of each serving coke oven are cleaned. Due to the enclosure, the dirt accumulating during the cleaning of the coke oven door can not escape into the atmosphere. Rather, they are collected on the walls and finally on the floor in a drip pan and added to the feed coal batch by batch.
  • further jet nozzle elements can be arranged.
  • the sump can be covered with a small amount of coal, so that the cleaned tar particles do not cake on the tub; the emptying of the sump is carried out on the printing press such that the tar and coal particles are fed to the grading coal bunker located on the printing press.
  • the drip pan On the coke side, the drip pan is emptied into a collecting container. The contents of the collection container is then fed to the feed coal. Also for the printing press, the arrangement of a separate collection container is possible.
  • the door cleaning with the jet nozzle elements in existing mechanical door cleaning devices with brushes, scratches or scrapers can be retrofitted by e.g. the brushes are replaced by a jet nozzle element.
  • This conversion has the advantage that existing cleaning facilities for the inventive method of door cleaning can be used.
  • the compressed air is heated according to an embodiment of the invention.
  • the waste heat available on the coking plant is used to heat the compressed air.
  • the waste heat from the air-cooled push rod or from the exhaust air of air conditioners or from the heat of compression can be obtained either by direct suction of the warm air or by a targeted routing of the compressed air through areas that give due to the coking process increased radiant heat.
  • the compressed air heating can also be done by heating and isolation of a compressed air storage tank. This is possible because the amount of air required to clean a door is so low that the warm-up phase in the time between the door cleaning operations is sufficient to heat the air back to at least 80 ° C preferably> 130 ° C before.
  • the door cleaning device consists of a compressor, which is located on the respective machine, d. H. on the machine side on the press and on the coke side on the coke transfer machine. With this compressor, the air is brought to the required pressure.
  • the compressed air is supplied to a compressed air reservoir. From there, it is conducted via fixed and flexible connection lines to the at least one jet nozzle element. Between the at least one jet nozzle element and the compressed air reservoir are solenoid valves, which are electrically controlled, whereby both the amount of air and the time of the air flow are predetermined accordingly.
  • pressure regulators are arranged with which the respective jet nozzle pressure can be regulated.
  • the control of the amount of air, the air pressure and in particular the predetermined with the individual nozzle elements cleaning paths can be made electronically by programming.
  • the control can be carried out via the main PLC (programmable logic controller) of the oven operating machine or by a separate PLC.
  • the jet nozzle elements are guided over the surfaces to be cleaned at a distance of approx. 5 cm. By this distance, a sufficient tolerance is given, so that distortions of the door seals can be compensated and in contrast to mechanical cleaning devices at all points a good cleaning is guaranteed.
  • FIG. 1 shows the compressed air supply of the jet nozzle elements.
  • a compressor 2 is arranged, which compresses the compressed air and pumped into a compressed air tank 3.
  • the compressed air tank 3 is provided with a compressed air tank heater 4. From the compressed air tank 3, the compressed air flows through lines 5 and 5 ', in which pressure regulator 6 and 6' and solenoid valves 7 and T are arranged, in jet nozzle elements 8 and 8 '.
  • FIG. 2 is a side view A, an interior view B and a top view C, the inventive method for coke oven door cleaning with a jet nozzle 10 shown schematically.
  • a jet nozzle 10 compressed air is blown onto a sealing strip 15 with a sealing blade 16 and on the inside surface of a membrane 17 which is fixed to a coke oven door plate 18 with a door stopper 19 at an acute angle.
  • the beam path of the compressed air is shown by way of example with the beams 11, 12, 13 and 14.
  • the jet 11 strikes the sealing edge 16 of the sealing strip 15.
  • the jet 12 strikes the region where the sealing strip 15 is attached to the membrane 17.
  • the jet 13 strikes the area between the membrane 17 and the door stopper 18.
  • the jet 14 strikes the center of the inside surface of the membrane 17.
  • FIG. 2 shows that the total area between the sealing edge and the Koksofenfplatte is acted upon by the jet nozzle 10 with compressed air and in this way tar deposits are blown away and thus the coke oven door is cleaned.
  • FIG. 3 shows a jet nozzle element 8 with two jet nozzles 20 and 20 ', which are directed at an acute angle of attack on the sealing strip 15 to be cleaned with sealing edge 16 (side view A).
  • the coke oven door is equipped with a circumferential gas channel 21 with outer sealing strips 15 with sealing edges 16 and inner sealing strips 15 'with sealing edges 16'.
  • the gas channel 21 is attached to the membrane 17 on the Koksofentplatte 18.
  • the jet nozzle 20 cleans the gas channel 21.
  • the jets 11 ', 12', 13 'and 14' indicate that the inside surface of the jet through the jet nozzle 20 ' Membrane 17 is cleaned.
  • FIG. 4 shows the cleaning of a coke oven door with a sealing strip 15 with sealing edge 16 and the diaphragm 17 with a blasting nozzle 25 with blunt and a jet nozzle 26 with acute angle of attack.
  • the remaining reference numerals have the same meaning as in the preceding figures. For reasons of clarity, the illustration of the beam paths 11 ', 13' and 14 'of the jet nozzle 25 in the interior view B has been dispensed with.
  • the dual jet nozzle pair element consists of two jet nozzles 31 and 31 ', which are aligned so that the air at an acute angle to the surface to be cleaned and two jet nozzles 32 and 32 'whose jets strike the surface to be cleaned at an obtuse angle.
  • FIG. 6 shows the sequence of the door cleaning method according to the invention with four double jet nozzle pairs.
  • Two pairs of double jet nozzles are used for the vertical and two for the horizontal cleaning of the coke oven door.
  • the timing of the cleaning of the four sections is controlled so that the contamination of the already cleaned sealing surface areas by other not completely cleaned areas or by detached impurities is largely avoided.
  • the upper door area is cleaned by an upper double-jet nozzle pair 35.
  • RW 2 the two lateral areas are cleaned starting from the top by pairs of double jet nozzles 36 and 36 'and parallel to the lower area of the surface to be cleaned by the double jet nozzle pair 37.
  • a double jet nozzle pair 37 is starting from the middle to the left in the lower area and back to the right corner and back to the middle position.
  • a subsequent third cleaning phase RW 3 the lower area is again cleaned by moving the lower double-jet nozzle pair 37 back and forth to the corners.
  • the cleaning phase RW 3 takes account of the fact that most of the impurities occur at the bottom of the coke oven door.
  • FIG. 7 shows the coke oven door cleaning with a stationary arrangement of the jet nozzle elements.
  • the jet nozzle elements are arranged in a housing 40 with a housing outer wall 41 and a housing inner wall 42.
  • the gas channel boundaries 43 and 43 'of the DMT door are indicated by the dashed lines.
  • jet nozzles 45, 47 and 49 for cleaning the gas channel and jet nozzles 46, 48 and 50 for cleaning the inside surface of the membrane are arranged as double-jet nozzles, the jet nozzles 45 to 50 directed at an acute angle to the surfaces to be cleaned are.
  • the double-jet nozzles are arranged at such a distance that the surfaces which are connected to the air of the jet nozzles 45 are applied to 50, slightly overlap with the surfaces which are exposed to the air of the adjacent jet nozzles 45 to 50, overlap. In this way, a cleaning of the entire sealing surface with the stationary jet nozzles 45 to 50 is ensured.
  • the jet nozzles 45 and 46 are starting from the upper left corner of the housing 40, oriented to the right. Starting from the upper right corner of the housing 40, the jet nozzles 47 and 48 radiate downward. From the lower right corner of the housing 40, the jet nozzles 49 and 50 radiate to the left. This arrangement is maintained until just before the center 53 of the housing 40.
  • the jet nozzles 47 and 48 radiate downward starting from the upper left corner. From the lower left corner of the housing, the jet nozzles 45 and 46 radiate to the right. This beam direction is maintained until just before the center 53 of the housing 40. In the upper left corner of the housing 40 additional jet nozzles 51 and 52 are arranged, which act on the surfaces which can not be reached by the jet nozzles 45, 46 and 47, 48.
  • a segment usually consists of 10 double-jet nozzles, consisting of the jet nozzles 45 and 46, 47 and 48 or 49 and 50.
  • the jet nozzles have a distance of 11 cm.
  • the compressed air is controlled so that in the upper segment S1 six double jet nozzles consisting of the jet nozzles 45 and 46 which clean the upper horizontal region of the sealing surfaces and the two upper double jet nozzles, consisting of the jet nozzles 47 and 48, the each radiate down and the jet nozzles 51 and 52 are pressurized with compressed air.
  • the further cleaning of the door takes place in the segments S2 to S14, which each consist of five double-jet nozzles for each side, starting from the top to the bottom in the segment S15.
  • the cleaning time is fifteen seconds in segments S1 to S14 and thirty seconds in segment S15. This results in a total cleaning time of four minutes. Since the time from lifting to reinserting the coke oven doors is about 5 minutes, the cleaning process does not lead to a delay in the operation. In this type of cleaning a complete cleaning of the coke oven door with relatively low compressor capacity is possible. In addition, contamination of the already cleaned sealing surface areas during door cleaning by detached contaminants is largely avoided.
  • the temperature profile of the tar was recorded in the gas channel of the DMT door during coking plant operation.
  • the temperatures were determined both immediately after the opening process and after a cooling phase of about 5 minutes.
  • the corresponding areas of the coke oven door were subjected to compressed air during the cooling phase.
  • the temperatures in the gas channel before the cooling phase were between 180 ° and 200 ° C and after the cooling phase between 140 ° and 160 ° C.
  • the tar was always liquid. During the short cooling phase, however, it became more viscous the lower the temperature was.
  • the device according to the invention for door cleaning consists of four double jet nozzle elements, which are designed as double jet nozzle pairs, wherein in each case a jet nozzle in the blunt and a jet nozzle is directed at an acute angle to the surfaces to be cleaned.
  • Two pairs of twin jet nozzles are used for the horizontal and two twin jet pairs for the vertical door areas.
  • the door is placed immediately after opening the coke oven chamber in the housed cleaning device, so that on the one hand a rapid cooling of the surfaces to be cleaned and on the other pollution of the machine area is avoided by the detached during cleaning tar and coke particles.
  • the enclosure is connected in the upper area to a fume hood, which is connected to the existing extraction system, so that the contaminated compressed air does not escape into the atmosphere.
  • In the lower area is a drip pan in which the separated tar particles are collected.
  • the timing of the cleaning of the four sections is controlled so that the contamination of the already cleaned sealing surface areas by other not yet completely cleaned areas or removed contaminants is largely avoided.
  • a first cleaning phase the upper door area is cleaned by the upper double jet nozzle pair.
  • the two lateral areas are cleaned starting from the top and parallel to the lower area of the surface to be cleaned.
  • the double jet nozzle pair is driven from the middle to the left and right corner at the bottom and returned to the middle position.
  • the lower area is again cleaned by reciprocating the lower twin jet nozzle pair from the left to the right corner, starting from the center.
  • the air is compressed by means of a compressor to a sufficient pre-pressure and then mixed with inserts in the jet nozzles in pulsation and rotated.
  • the compressed compressed air in the pressure vessel is preheated to about 130 ° C. by means of jacket heating and insulation.
  • the heating is designed so that in the period between the individual Koksausdruckvor réellen the amount of air in the pressure vessel is reheated.
  • the separated tar is kept liquid so that it can drain and be absorbed by the drip pan attached to the floor.
  • the door was reliably cleaned so well that a complete sealing of the coke oven chamber was ensured by the DMT door at any time during the coking process. Emissions due to leaking coke oven doors could not be observed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
EP06776647.7A 2005-08-10 2006-08-07 Verfahren und vorrichtung zur koksofentürreinigung Active EP1913115B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005037768A DE102005037768B3 (de) 2005-08-10 2005-08-10 Verfahren und Vorrichtung zur Koksofentürreinigung
PCT/EP2006/007790 WO2007017223A1 (de) 2005-08-10 2006-08-07 Verfahren und vorrichtung zur koksofentürreinigung

Publications (2)

Publication Number Publication Date
EP1913115A1 EP1913115A1 (de) 2008-04-23
EP1913115B1 true EP1913115B1 (de) 2016-04-27

Family

ID=36999224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776647.7A Active EP1913115B1 (de) 2005-08-10 2006-08-07 Verfahren und vorrichtung zur koksofentürreinigung

Country Status (13)

Country Link
US (1) US8038800B2 (pt)
EP (1) EP1913115B1 (pt)
JP (1) JP5185818B2 (pt)
KR (1) KR101385253B1 (pt)
CN (1) CN101258224B (pt)
BR (1) BRPI0614266B1 (pt)
CA (1) CA2618153C (pt)
DE (1) DE102005037768B3 (pt)
ES (1) ES2573927T3 (pt)
HU (1) HUE029090T2 (pt)
PL (1) PL1913115T3 (pt)
WO (1) WO2007017223A1 (pt)
ZA (1) ZA200800221B (pt)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
RU2429313C2 (ru) * 2007-05-01 2011-09-20 Ниппон Стил Корпорейшн Способ очистки стального листа и система непрерывной очистки стального листа
DE102011054515A1 (de) * 2011-10-14 2013-04-18 Thyssenkrupp Uhde Gmbh Vorrichtung und Verfahren zum Reinigen von Emissionsschutzeinbauten in Kokslöschtürmen
JP2014077055A (ja) * 2012-10-10 2014-05-01 Nippon Steel & Sumitomo Metal コークス炉窯口の付着物除去装置
KR101605267B1 (ko) * 2014-10-31 2016-03-22 주식회사 포스코 폐열을 이용한 코크스오븐 도어 클리닝 장치
DE102015104571A1 (de) * 2015-03-26 2016-09-29 Thyssenkrupp Ag Koksofenreinigungsvorrichtung, Ofenbedienungsmaschine sowie Verfahren zur Reinigung von Koksofentüren oder Koksofentürrahmen
CN108120594B (zh) * 2017-12-22 2019-10-18 中冶焦耐(大连)工程技术有限公司 一种焦炉集气管煤气安全放散水封阀门部分行程测试方法
JP7188007B2 (ja) * 2018-11-16 2022-12-13 日本製鉄株式会社 コークスの製造方法

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Also Published As

Publication number Publication date
CA2618153C (en) 2013-12-03
HUE029090T2 (hu) 2017-02-28
PL1913115T3 (pl) 2016-11-30
JP2009504819A (ja) 2009-02-05
BRPI0614266B1 (pt) 2016-04-19
JP5185818B2 (ja) 2013-04-17
ES2573927T3 (es) 2016-06-13
EP1913115A1 (de) 2008-04-23
BRPI0614266A2 (pt) 2011-03-22
WO2007017223A1 (de) 2007-02-15
CA2618153A1 (en) 2007-02-15
US20100154825A1 (en) 2010-06-24
KR20080041632A (ko) 2008-05-13
DE102005037768B3 (de) 2006-10-05
CN101258224B (zh) 2013-04-24
CN101258224A (zh) 2008-09-03
ZA200800221B (en) 2008-11-26
US8038800B2 (en) 2011-10-18
KR101385253B1 (ko) 2014-04-16

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