EP0085833B1 - Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens - Google Patents

Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens Download PDF

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Publication number
EP0085833B1
EP0085833B1 EP83100160A EP83100160A EP0085833B1 EP 0085833 B1 EP0085833 B1 EP 0085833B1 EP 83100160 A EP83100160 A EP 83100160A EP 83100160 A EP83100160 A EP 83100160A EP 0085833 B1 EP0085833 B1 EP 0085833B1
Authority
EP
European Patent Office
Prior art keywords
cooling
coke
gas
process according
zone
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.)
Expired
Application number
EP83100160A
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German (de)
English (en)
French (fr)
Other versions
EP0085833A3 (en
EP0085833A2 (de
Inventor
Karl Prof. Dr. Rer. Nat. Hedden
Horst Dr. Schumacher
Kurt-Günther Prof. Dr. Beck
Wolfgang Dr. Rohde
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of EP0085833A2 publication Critical patent/EP0085833A2/de
Publication of EP0085833A3 publication Critical patent/EP0085833A3/de
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Publication of EP0085833B1 publication Critical patent/EP0085833B1/de
Expired legal-status Critical Current

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    • 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
    • C10B39/02—Dry cooling outside the oven

Definitions

  • the invention relates to a method for dry coke cooling by means of a cooling gas containing water vapor and to an apparatus for performing this method.
  • Dry coke cooling has been a process that has been known for many decades, according to which the glowing coke expelled from the coke oven is filled into a cooling shaft, in which it is cooled by the inflowing inert gas. Consequently, such a shaft cooler works on the principle of a moving fixed bed in connection with the direct heat exchange between solid and gas in countercurrent.
  • the hot inert gas is usually used to generate steam in a tubular boiler. From DE-A-2 853 299 z. B.
  • a two-stage countercurrent coke cooling process in which a dry coke cooling is to be combined with the cleaning of the raw coking gas in such a way that an optimal cleaning of the raw coking gas takes place and a heat transfer gas of suitable, as uniform as possible, temperature is produced.
  • a raw coal degassing gas which contains steam, is used in the coking process. This process necessarily leads to a not inconsiderable burn-off of the hottest coke, but this is consciously accepted in view of the cleaning of the raw coal degassing gas by conversion of the methane, higher hydrocarbons and the tar contained in the raw gas.
  • DE-A-2 415 758 it is possible according to DE-A-2 415 758 to condense out the water vapor from the drying process from a cycle gas subsequently used for coke cooling in a method for drying and for preheating coking coal by means of the heat obtained in dry coke cooling in countercurrent to the coke.
  • This process is complex and requires two condensation stages.
  • the water vapor contained in the cooling gas can hardly be felt with regard to the burning of the coke; Typical burns are about 1% of the coke fed compared to about 0.5% when dry countercurrent cooling with inert gas.
  • cooling gas there are no special limits to the cooling gas; only at least a subset of the cooling gas contains water vapor and possibly similarly harmful gas components that promote the burning of coke.
  • a noticeable improvement in coke cooling is achieved according to the invention by a two-stage cooling process, whereby, according to a development of the invention, better use of the heat content of the coke is achieved by countercurrent cooling in the second stage; this means that the direct-current cooling in the first stage, which is more favorable in terms of burn-off, is coupled with the thermally more favorable counter-current cooling in the second stage.
  • the cooling gas - above all from the first cooling stage - can also be used for other purposes of providing energy beyond the thermal pretreatment of the coking coal (and of course also independently of it).
  • the coke cooling is forced, but only such small and finely sprayed amounts of water are used that neither significant coke burn-off takes place nor that a so-called wet quenching comparable amount of water is used.
  • Alternating in the sense of general usage means: alternating, i.e. repeated increasing and decreasing the spraying.
  • the cooling in the first stage contributes to the fact that the temperature range, which is particularly sensitive to the water gas reaction, takes place exclusively in the first stage with direct current cooling, i. H. that this temperature range is run through extremely quickly; on the other hand, the cooling in the first stage will generally hardly be operated below 700 ° C in order to be able to use the thermally more favorable countercurrent cooling to the greatest extent possible in the second stage.
  • the use according to the invention of the cooling gas discharged from the cooling container is particularly advantageous for the thermal pretreatment of coking coal in direct contact, that is, above all for drying and preheating coking coal; this achieves the thermally most favorable temperature coupling of the two methods.
  • a slight mixing of the two cooling gas circuits in the area of the interface will generally not be particularly damaging, especially since if necessary, the water vapor that may undesirably enter the first cooling stage (direct current cooling) can be condensed out before it is used again as cooling gas.
  • direct current cooling direct current cooling
  • a gas build-up normally occurs, which naturally buffers the two circulating media against one another - especially if the respective cooling gas discharge devices are sufficiently far apart.
  • the cooling container is divided by the coke lock into an upper and a lower zone for coke cooling, the area of the coke lock being a separate zone - functioning as a gas buffer - and the cooling gas discharge devices for the two cooling stages at the ends of the buffer zone are provided.
  • the coke lock can be designed according to the features of claims 9, 10 and / or 11; Here, moving parts are avoided and the coke travels through such a lock, which is always open, without being mechanically loaded excessively, continuously and without the risk of blockages. - By arranging both types of built-in parts one above the other, a gas buffer space preventing mixing of the two cooling gas systems is automatically created; it does not matter which of the two installation parts is the upper or lower one.
  • the separation of the cooling gas circuits on the Lock can be done according to the invention in that the inlet openings of the gas discharge devices are assigned to the built-in parts in the claimed manner. So it is advisable for both types of built-in parts - if one of them forms the lock alone - to provide separate upper and lower inlet openings for the upper and lower cooling gas circuit.
  • These inlet openings can, for. B. be provided nationwide in the form of a sieve; In the case of the upward-facing, conical installation part, it is particularly advisable to accommodate the inlet openings in the area of the cone tip (the cone can also be a hollow cone).
  • the truncated cone For the downward-facing, truncated cone-shaped installation part, inlet openings above or below the outer edge of the installation part are recommended, in each case on the cooling container, on which an annular gas collecting line can be provided for this purpose (the truncated cone can also be designed as a hollow truncated cone).
  • both installation parts together form the coke lock, they are preferably used as a hollow cone or truncated cone, in which - with respect to the cooling container on the undersides, the gas inlet openings for the lower cooling circuit and on the upper sides, the inlet openings for the upper cooling circuit are provided.
  • the internals can be double-walled or triple-walled, in order to implement area-wide inlet openings and to be able to conduct the gases which are collected in the spaces thus located within the internals separately.
  • a flushing gas device for the coke lock improves its gaseous buffering effect;
  • one or more gas inlet or gas outlet openings for purge gas which can optionally be circulated, are provided in the area of the coke lock.
  • Gas inlet or outlet openings, as described in connection with the built-in parts, are also fundamentally suitable for this. So z. B. the purge gas is not only passed across the coke stream through the coke lock, but also in or against the direction of the coke stream, for. B. between the opposite surfaces of the above-described installation parts.
  • Fig. 1, 1 denotes a cooling container, with any upper coke feed device 2 and any lower coke extraction device 3, as well as an upper cooling gas feeding device 4 and a lower cooling gas feeding device 5 and a middle cooling gas discharge device 6 (the latter does not necessarily have to be in the middle of the vertical cooling container expansion located, but at the point where there is approximately the same temperature of the cooling gas fed in from above or below).
  • the cooling gas discharge device 6 can, for. B. a ring line with several openings to the container wall.
  • the cooling container 1 has any cross-section and is traversed by the coke from top to bottom; the upper cooling zone is designated by 1a, the lower cooling zone by 1b and the zone in the area of the cooling gas discharge device is designated by 1.
  • the coke feed device 2 is designed as a simple downpipe; the same applies to the coke extraction device 3 and to the upper and lower cooling gas supply devices 4 and 5.
  • the cooling gas discharge device 6 comprises the pipes 6a and 6b with inlet openings 6c and 6d.
  • a coke lock 7 comprises an upwardly directed, cone-shaped built-in part 10 fastened with a space 8 to the inner wall 9 of the cooling container 1 and a downwardly directed, frustoconical built-in part 11 attached to the inner wall 9 with a central opening 13.
  • the inlet opening 6c is in the middle of the hollow-conical installation part 10 for the upward directed cooling gas flow of zone 1b; it is also possible to provide a plurality of openings 6c on the lower inner side of the built-in part 10 for a comprehensive cooling gas outflow, as indicated in FIG. 2b.
  • the inlet openings 6d are located on the outer edge 11 of the installation part 11, preferably in the cooling container wall.
  • the gas discharge device is arranged as a ring line around the cooling container 1.
  • a comprehensive cooling gas discharge is - according to that mentioned for the built-in part 10 - also possible in the manner of FIG. 2b by a double or triple-walled design of the hollow-cone-shaped built-in part 11.
  • a purge gas device 12 with a feed line 12a and a discharge line 12b in the area of the coke lock 7 can, according to FIG. B. operated in cross flow. However, it is also possible to carry out a flushing gas supply and disposal over the built-in parts 10 and 11.
  • FIG. 2b shows how a comprehensive gas supply or disposal can be implemented on the built-in parts.
  • a gas supply or disposal device can also be provided only on the top and bottom of the installation part. Accordingly, one of the two perforated areas is missing (as not shown in FIG. 2b).
  • openings for the gas supply and disposal should be designed according to their size, shape and possibly also alignment so that no coke particles can penetrate or lay them.
  • the built-in parts as is not shown in more detail in FIG. 2a — need not necessarily be designed as a hollow cone or a hollow truncated cone, and they can be arranged in the cooling container 1 in different numbers and / or in succession.
  • the two-stage procedure in a device according to FIG. 2a means that steam-free cooling gases can also be used in the upper cooling zone, as a result of which the coke burn-off is reduced even further without the coke lock to be recommended in this case being technically, procedurally and in terms of investment particularly expensive. - If you do not use the coke lock, you have to put up with different cooling gas in both stages that mixing occurs in the gas discharge device, which makes a recycle of the gases more expensive.
EP83100160A 1982-02-04 1983-01-11 Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens Expired EP0085833B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3203731A DE3203731C2 (de) 1982-02-04 1982-02-04 Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens
DE3203731 1982-02-04

Publications (3)

Publication Number Publication Date
EP0085833A2 EP0085833A2 (de) 1983-08-17
EP0085833A3 EP0085833A3 (en) 1985-01-23
EP0085833B1 true EP0085833B1 (de) 1987-06-10

Family

ID=6154749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100160A Expired EP0085833B1 (de) 1982-02-04 1983-01-11 Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens

Country Status (7)

Country Link
EP (1) EP0085833B1 (es)
JP (1) JPS58145780A (es)
AU (1) AU560495B2 (es)
BR (1) BR8300549A (es)
DE (2) DE3203731C2 (es)
ES (1) ES519499A0 (es)
ZA (1) ZA83718B (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203732C2 (de) * 1982-02-04 1985-06-20 Bergwerksverband Gmbh, 4300 Essen Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens
DE3441322C1 (de) * 1984-11-12 1986-05-28 Bergwerksverband Gmbh, 4300 Essen Verfahren und Vorrichtung zur trockenen Kokskuehlung
US20130099055A1 (en) * 2011-10-24 2013-04-25 Schneller, Inc. Integrated lavatory pan for commercial aircraft

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE446042C (de) * 1922-11-19 1927-06-21 Kohlenveredlung Akt Ges Verfahren zum Trocknen feuchten Guts mittels der aus dem Gut austretenden, in einen Zusatztrockner geleiteten Schwaden
DE435572C (de) * 1923-01-18 1928-06-06 Bamag Meguin Akt Ges Trockenkuehlung von Koks
DE472510C (de) * 1925-05-13 1929-03-05 Collin & Co Verfahren und Anlage zur Ausnutzung der fuehlbaren Waerme des garen Kokses
FR823374A (fr) * 1936-07-04 1938-01-19 Metallgesellschaft Ag Procédé pour distiller des combustibles à basse température et refroidir au moyen de gaz de balayage le coke formé
JPS4833601A (es) * 1971-09-02 1973-05-11
DE2415758A1 (de) * 1974-04-01 1976-02-26 Buettner Schilde Haas Ag Anlage zur kohletrocknung und vorerhitzung
JPS5237903A (en) * 1975-09-20 1977-03-24 Nippon Kokan Kk <Nkk> Apparatus for blowing cooling gas into the quenching chamber of a coke dry quenching plant
SU802354A1 (ru) * 1977-03-01 1981-02-07 Украинский Научно-Исследовательскийуглехимический Институт Способ сухого тушени кокса и получени гАзОВ, СОдЕРжАщиХ ВОдОРОд и ОКиСьуглЕРОдА, и уСТРОйСТВО дл ЕгООСущЕСТВлЕНи
DE2853299C3 (de) * 1978-12-09 1981-12-24 Dr. C. Otto & Comp. Gmbh, 4630 Bochum Betriebsverfahren für eine Vertikalkammer zum kontinuierlichen Trockenlöschen von Koks
DE2856141C2 (de) * 1978-12-27 1982-02-11 Didier Engineering Gmbh, 4300 Essen Einrichtung zur trockenen Kokskühlung
DE3000808C2 (de) * 1980-01-11 1987-08-20 Didier Engineering Gmbh, 4300 Essen Verfahren zur Nutzung der fühlbaren Kokswärme an einer Verkokungsanlage sowie Anlage zur Durchführung eines solchen Verfahrens
DE3004502A1 (de) * 1980-02-07 1981-08-13 Krupp-Koppers Gmbh, 4300 Essen Kuehler fuer die koks-trockenkuehlung
DE3203732C2 (de) * 1982-02-04 1985-06-20 Bergwerksverband Gmbh, 4300 Essen Verfahren zur trockenen Kokskühlung und Vorrichtung zum Durchführen dieses Verfahrens

Also Published As

Publication number Publication date
DE3203731A1 (de) 1983-08-18
BR8300549A (pt) 1983-11-08
ES8400766A1 (es) 1983-12-01
EP0085833A3 (en) 1985-01-23
DE3203731C2 (de) 1985-05-30
AU560495B2 (en) 1987-04-09
EP0085833A2 (de) 1983-08-17
AU1115283A (en) 1983-08-11
DE3371996D1 (en) 1987-07-16
ES519499A0 (es) 1983-12-01
JPS58145780A (ja) 1983-08-30
ZA83718B (en) 1983-11-30

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