EP0250420A1 - Apparatus for the cooling of coke. - Google Patents

Apparatus for the cooling of coke.

Info

Publication number
EP0250420A1
EP0250420A1 EP86901860A EP86901860A EP0250420A1 EP 0250420 A1 EP0250420 A1 EP 0250420A1 EP 86901860 A EP86901860 A EP 86901860A EP 86901860 A EP86901860 A EP 86901860A EP 0250420 A1 EP0250420 A1 EP 0250420A1
Authority
EP
European Patent Office
Prior art keywords
coke
cooling
water
process step
receptacle
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.)
Granted
Application number
EP86901860A
Other languages
German (de)
French (fr)
Other versions
EP0250420B1 (en
Inventor
Georg Pollert
Friedrich Orywal
Claus Meyer-Wulf
Martin Reinke
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
Priority to AT86901860T priority Critical patent/ATE43856T1/en
Publication of EP0250420A1 publication Critical patent/EP0250420A1/en
Application granted granted Critical
Publication of EP0250420B1 publication Critical patent/EP0250420B1/en
Expired legal-status Critical Current

Links

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
    • C10B39/14—Cars
    • 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 method for cooling coke and an apparatus for performing this method.
  • the direct heat exchange is carried out by circulating gas, from which its energy is usefully extracted by renewed heat exchange.
  • the object of the present invention is to overcome these disadvantages of the known coke cooling processes. You are reliably avoided in the inventive method for cooling coke by the combination of features set out in claim 1. The device listed in claim 4 is used to carry out the method.
  • FIG. 3 shows the subject of FIG. 2 in cross section
  • Fig. 4 shows a modification of the process scheme shown in Fig. 1.
  • the coke is at a temperature of z. B. 1100 ° C from the chamber 2 in one of the two coke receptacles 3, 3a.
  • the coke receptacles 3, 3a are moved parallel to the axis of the battery 1 so that the total amount of coke from the chamber 2 is distributed as evenly as possible over the surface of the coke receptacle 3.
  • the coke receptacle can be successively closed with a lid 15, 15a.
  • the sloping bottom surface 14 (FIG. 3) of the coke receptacle 3 is occupied in the example with cooling walls 4 which are perpendicular to the axis of the battery 1 and which are at a distance of z. B. 40 cm.
  • Cooling walls 4, bottom surface 14, outer walls 10 (FIG. 2) and cover 15 (FIG. 3) of the coke receptacle 3 are formed in the example as a hollow body and act as a steam generator.
  • the feed water is e.g. B. the coke receptacle 3 is fed via a permanently connected, windable, flexible line 11.
  • the steam produced (z. B. 5 bar) is via a flexible line 12 also permanently connected to an expansion tank 8 and from there z. B. the Maugew Innungsstrom 9 supplied.
  • the coke remains in the container 3 until a second, similar container 3a, which is assigned to the same drive element 20, is loaded with coke and closed with a lid 15a described above.
  • the coke is transferred to the coke ramp 6 in a known manner, the water and coke discharge 16 being brought into the discharge position 1b.
  • a modification of the embodiment shown in FIGS. 1 to 3 is that, according to FIG. 2, the pollutant-free steam generated is not used, but is released into the atmosphere via a chimney 13 without pressure.
  • the cooling walls 4, the outer walls 10, the bottom surface 14 and the cover 15 are designed as water coolers.
  • the cooling water is removed from a cooling water channel 17 with the aid of a pump 19.
  • the heated return cooling water is fed to the cooling tower 7 via a channel 18.
  • Another option is from. B. in that in the case of steam generation, a feed water tank is carried on the drive member 20 and periodically filled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Dans un procédé de refroidissement de coke, une partie de la chaleur perceptible est évacuée dans un récipient de coke construit comme un élément réfrigérant. Le refroidissement jusqu'à la température ambiante se fait ensuite par aspersion d'eau.In a coke cooling process, some of the perceivable heat is removed into a coke vessel constructed as a cooling element. Cooling to room temperature is then done by spraying with water.

Description

Verfahren und Vorrichtung zur Kühlung von Koks Method and device for cooling coke
Die Erfindung betrifft ein Verfahren zur Kühlung von Koks und eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for cooling coke and an apparatus for performing this method.
Bisher werden zwei grundsätzlich verschiedene Verfahren zur Kühlung des glühenden Kokses angewandt: das sogenannte Naßlöschen und die Kokstrockenkühlung:So far, two fundamentally different processes have been used to cool the red-hot coke: wet quenching and coke-dry cooling:
Bei der Kokstrockenkühlung, von der aus Glückauf 114(1978), Seiten 611/619 verschiedene Verfahrensvorschläge bekannt sind, wird die fühlbare Wärme des Kokses durch direkten oder indirekten Wärmetausch abgeführt und größtenteils zurückgewonnen. Der Koks wird bei derartigen Anlagen üblicherweise mit einer Temperatur zwischen 150 ºC und 250 ºC ausgetragen.In coke dry cooling, of which various process proposals are known from Glückauf 114 (1978), pages 611/619, the sensible heat of the coke is dissipated by direct or indirect heat exchange and largely recovered. In such plants, the coke is usually discharged at a temperature between 150 ° C and 250 ° C.
Der direkte Wärmetausch erfolgt durch im Kreislauf geführtes Gas, dem seine Energie durch erneuten Wärmetausch nutzbringend entzogen wird.The direct heat exchange is carried out by circulating gas, from which its energy is usefully extracted by renewed heat exchange.
Bei ausschließlich indirekter Kühlung sind lange Verweilzeiten erforderlich, so daß zu Sicherstellung hinreichender Kühlkapazität große Nutzvolumen notwendig sind.With only indirect cooling, long dwell times are required, so that large usable volumes are necessary to ensure sufficient cooling capacity.
Kapital- und Betriebskosten für Kokstrockenkühlanlagen sind vergleichsweise hoch.Capital and operating costs for dry coke cooling plants are comparatively high.
Bemerkenswerte gasförmige Emmissionen entstehen bei diesen Verfahrensvorschlägen zwar nicht, jedoch haben sich im praktischen Betrieb erhebliche, bisher nicht gelöste Probleme dahingehend gezeigt, daß bei der Handhabung des trocken gekühlten Kokses eine starke Staubentwicklung auftritt. Beim Naßlöschen gemäß dem allgemeinen Stand der Technik wird der Koks durch Verdampfung von aufgesprühtem Wasser gekühlt. Dabei entstehen infolge des thermischen Auftriebes partikelförmige Emissionen, die bei modernen Löschtürmen in der Größenordnung von 50 g/t Koks liegen, sowie gasförmige Emissionen in Form von z. B. Schwefelwasserstoff und Kohlenoxid durch chemische Reaktionen zwischen dem heißen Koks und Wasser. Derartige Reaktionen führen im Temperaturbereich oberhalb 800 ºC zu beachtlichen Schadstoffemissionen.Although these process proposals do not produce any remarkable gaseous emissions, considerable problems which have not yet been solved have been found in practical operation to the extent that heavy dust formation occurs when the dry-cooled coke is handled. In wet quenching according to the general prior art, the coke is cooled by the evaporation of sprayed water. As a result of the thermal buoyancy, particulate emissions arise, which in modern extinguishing towers are in the order of 50 g / t coke, as well as gaseous emissions in the form of e.g. B. hydrogen sulfide and carbon oxide by chemical reactions between the hot coke and water. Such reactions lead to considerable pollutant emissions in the temperature range above 800 ºC.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, diese Nachteile der bekannten Kokskühlverfahren zu umgehen. Sie werden bei dem erfindungsgemäßen Verfahren zur Kühlung von Koks durch die im Anspruch 1 niedergelegte Merkmalskombination zuverlässig vermieden. Zur Durchführung des Verfahrens dient die in Anspruch 4 aufgeführte Vorrichtung.The object of the present invention is to overcome these disadvantages of the known coke cooling processes. You are reliably avoided in the inventive method for cooling coke by the combination of features set out in claim 1. The device listed in claim 4 is used to carry out the method.
In den Verfahrens- und vorrichtungsmäßigen Unteransprüchen sind zweckmäßige Weiterbildungen enthalten.Appropriate further training is contained in the procedural and device-dependent claims.
Die bei Kokstrockenkühlanlagen auftretenden Stauprobleme treten bei erfindungsgemäßem Vorgehen nicht auf, da der in der ersten Stufe vorgekühlte Koks beim Besprühen mit Wasser in der zweiten Stufe gleichmäßig befeuchtet wird und damit eine Staubentwicklung bei der Handhabung des Kokses unterbunden wird. Gleichzeitig wird die Kokstemperatur vor dem Naßlöschen soweit gesenkt, daß die bei höheren Temperaturen beschleunigt ablaufenden Reaktionen beim erfindungsgemäßen Verfahren weitestgehend unterdrückt werden. Außerdem wird der thermische Auftrieb in der Naß löschstuf e verringert, so daß auch die partikelförmigen Emissionen beachtlich reduziert werden.The congestion problems which occur in coke-drying cooling systems do not occur in the procedure according to the invention, since the coke which has been precooled in the first stage is uniformly moistened when sprayed with water in the second stage and thus prevents dust from developing when the coke is handled. At the same time, the coke temperature before wet quenching is reduced to such an extent that the reactions which occur at higher temperatures are largely suppressed in the process according to the invention. In addition, the thermal buoyancy in the wet extinguishing stage is reduced, so that the particulate emissions are also considerably reduced.
Der erforderliche Aufwand ist, verglichen mit der Kokstrockenkühlung, geringer. Wie bei der Kokstrockenkühlung kann jedoch ein Teil der fühlbaren Wärme des Kokses zurückgewonnen werden, durch deren Nutzung die Wirtschaftlichkeit weiter erhöht wird.The effort required is lower compared to coke dry cooling. As with coke dry cooling, however part of the sensible heat of the coke can be recovered, the use of which further increases the economy
Anhand des nachstehenden Beispieles wird die Arbeitsweise des Verfahrens näher beschrieben.The method of operation of the method is described in more detail using the example below.
In Fig. 1 ist ein Verfahrensgrundschema abgebildet.1 shows a basic process diagram.
Fig. 2 zeigt ein Ausführungsbeispiel des Koksaufnahmebehälters in Draufsicht,2 shows an embodiment of the coke receptacle in plan view,
Fig. 3 den Gegenstand der Fig. 2 im Querschnitt,3 shows the subject of FIG. 2 in cross section,
Fig. 4 eine Abwandlung des in Fig. 1 dargestellten Verfahrensschemas.Fig. 4 shows a modification of the process scheme shown in Fig. 1.
Bei dem in den Fig. 1 bis 3 dargestellten Ausführungsbeispiel wird der Koks nach beendeter Garung mit einer Temperatur von z. B. 1100 ºC aus der Kammer 2 in einen der beiden Koksaufnahmebehälter 3, 3a gedrückt. Dabei werden die Koksaufnahmebehälter 3, 3a parallel zur Achse der Batterie 1 verfahren, damit die Gesamtmenge des Kokses aus der Kammer 2 möglichst gleichmäßig über die Fläche des Koksaufnahmebehälters 3 verteilt wird. Der Koksaufnahmebehälter kann sukzessive mit einem Deckel 15, 15a verschlossen werden.In the embodiment shown in FIGS. 1 to 3, the coke is at a temperature of z. B. 1100 ° C from the chamber 2 in one of the two coke receptacles 3, 3a. The coke receptacles 3, 3a are moved parallel to the axis of the battery 1 so that the total amount of coke from the chamber 2 is distributed as evenly as possible over the surface of the coke receptacle 3. The coke receptacle can be successively closed with a lid 15, 15a.
Die schrägstehende Bodenfläche 14 (Fig. 3) des Koksaufnahmebehälters 3 ist im Beispiel mit senkrecht zur Achse der Batterie 1 stehenden Kühlwänden 4 besetzt, die untereinander einen Abstand von z. B. 40 cm haben. Kühlwände 4, Bodenfläche 14, Außenwände 10 (Fig. 2) und Deckel 15 (Fig. 3) des Koksaufnahmebehälters 3 sind im Beispiel als Hohlkörper ausgebildet und fungieren als Dampferzeuger. Das Speisewasser wird z. B. über eine permanent angeschlossene, aufwickelbare, flexible Leitung 11 dem Koksaufnahmebehälter 3 zugeführt. Der produzierte Dampf (z. B. 5 bar) wird über eine ebenfalls permanent angeschlossene flexible Leitung 12 einem Ausgleichsbehälter 8 und von dort aus z. B. der Nebengew innungsanlage 9 zugeführt.The sloping bottom surface 14 (FIG. 3) of the coke receptacle 3 is occupied in the example with cooling walls 4 which are perpendicular to the axis of the battery 1 and which are at a distance of z. B. 40 cm. Cooling walls 4, bottom surface 14, outer walls 10 (FIG. 2) and cover 15 (FIG. 3) of the coke receptacle 3 are formed in the example as a hollow body and act as a steam generator. The feed water is e.g. B. the coke receptacle 3 is fed via a permanently connected, windable, flexible line 11. The steam produced (z. B. 5 bar) is via a flexible line 12 also permanently connected to an expansion tank 8 and from there z. B. the Nebengew Innungsanlage 9 supplied.
Der Koks verbleibt im Behälter 3, bis ein zweiter, gleichartiger Behälter 3a, der dem selben Antriebsorgan 20 zugeordnet ist, mit Koks beschickt und mit einem oben beschriebenen Deckel 15a verschlossen ist.The coke remains in the container 3 until a second, similar container 3a, which is assigned to the same drive element 20, is loaded with coke and closed with a lid 15a described above.
Während der Verweil zeit des Kokses im Behälter 3 bzw. 3a vor der Batterie 1 von z. B. 10 Minuten wird die Temperatur des Kokses auf z. B. 800 ºC abgesenkt, wobei ca. 130 kg Dampf/t Koks erzeugt werden. Anschließend wird der Deckel 15 des Behälters 3 während der Fahrt unter den Löschturm 5 entfernt und der Koks durch Besprühen mit Wasser auf Umgebungstemperatur gekühlt. Dabei wird der Wasser- und Koksaustrag 16 in Stellung 16a gebracht, in der die angedeuteten Wasseraustrittslöcher freiliegen.During the dwell time of the coke in the container 3 or 3a in front of the battery 1 of z. B. 10 minutes the temperature of the coke on z. B. 800 ° C, producing about 130 kg of steam / t of coke. Then the lid 15 of the container 3 is removed while driving under the quenching tower 5 and the coke is cooled to ambient temperature by spraying with water. The water and coke discharge 16 is brought into position 16a, in which the indicated water outlet holes are exposed.
Die Übergabe des Kokses auf die Koksrampe 6 erfolgt in bekannter Weise, wobei der Wasser- und Koksaustrag 16 in Austragsstellung 1όb gebracht wird.The coke is transferred to the coke ramp 6 in a known manner, the water and coke discharge 16 being brought into the discharge position 1b.
Eine Abwandlung des in Fig. 1 bis 3 dargestellten Ausführungsbeispiels besteht darin, daß gemäß Fig. 2 der erzeugte schadstofffrei Dampf nicht genutzt, sondern drucklos über einen Kamin 13 in die Atmosphäre abgegeben wird.A modification of the embodiment shown in FIGS. 1 to 3 is that, according to FIG. 2, the pollutant-free steam generated is not used, but is released into the atmosphere via a chimney 13 without pressure.
Bei der in Fig. 4 dargestellten Abwandlung des Verfahrens sind die Kühlwände 4, die Außenwände 10, die Bodenfläche 14 und der Deckel 15 als Wasserkühler ausgebildet. Das Kühlwasser wird mit Hilfe einer Pumpe 19 einer Kühlwasserrinne 17 entnommen. Das erwärmte Rücklaufkühlwasser wird über eine Rinne 18 dem Kühlturm 7 zugeführt.In the modification of the method shown in FIG. 4, the cooling walls 4, the outer walls 10, the bottom surface 14 and the cover 15 are designed as water coolers. The cooling water is removed from a cooling water channel 17 with the aid of a pump 19. The heated return cooling water is fed to the cooling tower 7 via a channel 18.
Eine weitere Aus f üh rungsmöglichkeit besteht z. B. darin, daß im Falle der Dampferzeugung ein Speisewasserbehälter auf dem Antriebsorgan 20 mitgeführt und periodisch gefüllt wird. Another option is from. B. in that in the case of steam generation, a feed water tank is carried on the drive member 20 and periodically filled.

Claims

Patentansprüche: Claims:
1. Verfahren zur Kühlung von Koks, dadurch gekennzeichnet, daß der Koks in einem ersten Verfahrensschritt mittels eines indirekten Wärmetauschers auf eine Temperatur unterhalb etwa 900 °C, vorzugsweise 700 - 900 °C, gekühlt wird und in einem zweiten Verfahrensschritt durch Besprühen mit Wasser auf Umgebungstemperatur gekühlt wird.1. A method for cooling coke, characterized in that the coke is cooled in a first process step by means of an indirect heat exchanger to a temperature below about 900 ° C, preferably 700-900 ° C, and in a second process step by spraying with water Ambient temperature is cooled.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im ersten Verfahrensschritt Dampf erzeugt wird.2. The method according to claim 1, characterized in that steam is generated in the first process step.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im ersten Verfahrensschritt Heißwasser erzeugt wird.3. The method according to claim 1, characterized in that hot water is generated in the first process step.
4. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und 2 oder 3, bestehend aus einem verfahrbaren Koksaufnahmebehälter mit Kühlflächen für den indirekten Wärmetausch sowie mit verschließbaren Wasserabläufen und verschließbaren Koksaustragen.4. Device for performing the method according to claim 1 and 2 or 3, consisting of a movable coke receptacle with cooling surfaces for indirect heat exchange and with closable water drains and closable coke discharge.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Kühlflächen als indirekter Wasserkühler ausgebildet sind.5. The device according to claim 4, characterized in that the cooling surfaces are designed as an indirect water cooler.
6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Kühlfläche als Dampferzeuger ausgebildet sind. 6. The device according to claim 4, characterized in that the cooling surface is designed as a steam generator.
7. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Koksaufnahmebehälter mit einem Deckel versehen ist. 7. The device according to claim 4, characterized in that the coke receptacle is provided with a lid.
EP86901860A 1985-03-23 1986-03-15 Apparatus for the cooling of coke Expired EP0250420B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86901860T ATE43856T1 (en) 1985-03-23 1986-03-15 DEVICE FOR COOLING COKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3510678 1985-03-23
DE19853510678 DE3510678A1 (en) 1985-03-23 1985-03-23 METHOD AND DEVICE FOR COOLING COCKS

Publications (2)

Publication Number Publication Date
EP0250420A1 true EP0250420A1 (en) 1988-01-07
EP0250420B1 EP0250420B1 (en) 1989-06-07

Family

ID=6266197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901860A Expired EP0250420B1 (en) 1985-03-23 1986-03-15 Apparatus for the cooling of coke

Country Status (6)

Country Link
US (1) US4743342A (en)
EP (1) EP0250420B1 (en)
JP (1) JPS62502800A (en)
AT (1) ATE43856T1 (en)
DE (2) DE3510678A1 (en)
WO (1) WO1986005507A1 (en)

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US5827403A (en) * 1996-07-10 1998-10-27 Citgo Petroleum Corporation Method of designing and manufacturing a delayed coker drum
US5795445A (en) * 1996-07-10 1998-08-18 Citgo Petroleum Corporation Method of controlling the quench of coke in a coke drum
US6039844A (en) * 1998-10-09 2000-03-21 Citgo Petroleum Corporation Containment system for coke drums
DE10205974B4 (en) * 2002-02-08 2019-12-05 Flsmidth Koch Gmbh Kokstrockenkühlanlage
KR100815887B1 (en) 2007-03-14 2008-03-21 주식회사 포스코 Fire extinguishing cart for carrying red heat cokes
CN104109542B (en) * 2014-07-22 2017-11-17 华电重工股份有限公司 Low Water Consumption Coke Quenching device and the coke quenching method using the coke quenching device
CN104109541B (en) * 2014-07-22 2017-11-21 华电重工股份有限公司 Low water consumption coke quenching case and the coke quenching method using the quenching case
CN109233876B (en) * 2018-10-15 2024-01-09 中冶焦耐(大连)工程技术有限公司 Three-dimensional water-cooling coke quenching car with bottom supplied with water in single way and working method thereof

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GB363366A (en) * 1930-08-16 1931-12-16 Maurice Bertrand Improvements in apparatus for the dry extinction of coke
DE601392C (en) * 1931-12-13 1934-08-15 Maurice Bertrand Device for dry extinguishing of coke
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Also Published As

Publication number Publication date
ATE43856T1 (en) 1989-06-15
JPS62502800A (en) 1987-11-12
DE3510678C2 (en) 1987-01-22
WO1986005507A1 (en) 1986-09-25
EP0250420B1 (en) 1989-06-07
DE3510678A1 (en) 1986-10-02
DE3663816D1 (en) 1989-07-13
US4743342A (en) 1988-05-10

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