EP0200971A2 - Procédé, récipient et installation pour la fabrication de coke - Google Patents

Procédé, récipient et installation pour la fabrication de coke Download PDF

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Publication number
EP0200971A2
EP0200971A2 EP86105402A EP86105402A EP0200971A2 EP 0200971 A2 EP0200971 A2 EP 0200971A2 EP 86105402 A EP86105402 A EP 86105402A EP 86105402 A EP86105402 A EP 86105402A EP 0200971 A2 EP0200971 A2 EP 0200971A2
Authority
EP
European Patent Office
Prior art keywords
vessel
coking
coal
coke
gas
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Withdrawn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
EP86105402A
Other languages
German (de)
English (en)
Other versions
EP0200971A3 (fr
Inventor
Hartmut Dr.-Ing. Bauer
Dietrich Prof. Dr. Wagener
Egmar Wunderlich
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.)
Didier Engineering GmbH
Original Assignee
Didier Engineering 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 Didier Engineering GmbH filed Critical Didier Engineering GmbH
Publication of EP0200971A2 publication Critical patent/EP0200971A2/fr
Publication of EP0200971A3 publication Critical patent/EP0200971A3/fr
Withdrawn legal-status Critical Current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
    • C10B51/00—Destructive distillation of solid carbonaceous materials by combined direct and indirect 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
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • 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
    • C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated

Definitions

  • the invention relates to a process for producing coke from coal by coking the coal and optionally one or more further process steps such as drying and preheating the coal upstream of the coking and optionally a dry coke cooling downstream of the coking.
  • the object of the present invention is therefore to propose a method of the type mentioned at the outset which is more economical, i.e. is executable, in particular, with a lower outlay on equipment and processes; preferably an easier adaptation to the acceptance requirement and an easier and more convenient repair should also be possible.
  • the invention further relates to the device or system device for performing the method mentioned at the outset to achieve the object.
  • this object is essentially achieved in that the coking and optionally one or more of the further process stages are carried out in a pressure-tight closed vessel by means of a gas which can be passed through the vessel, preferably inert gas, by direct and / or indirect heat exchange will or will be, the coal for coking (piece coke formation) in the vessel is heated at least in the temperature range between about 250 ° C and 600 * C only by indirect heating. In this way, the economy of coke production can be improved considerably.
  • the coking does not take place, as in conventional coking ovens, simply by heating the chamber walls, which are located relatively far apart, but by introducing appropriately tempered gases into the interior of the vessel, where the gases either flow directly through the vessel filling and come into contact with the coal or coke or give up their heat indirectly to the contents of the vessel when it flows through pipelines which intervene relatively closely next to one another in the vessel filling.
  • this enables economically adapted heating in such a way that, before and after the plastic phase, in which heating is to be carried out only indirectly, the direct or indirect or both types of heating, as well as dry cooling, varies according to the expediency for one or more process stages can be.
  • the process of coking and, if appropriate, the further process steps can be carried out with negative pressure or under more or less increased pressure without impairing the appropriate type of heating.
  • the invention further allows that in addition to the coking, the other process steps, namely the drying and / or preheating of the coal, which may be upstream of the coking and / or the dry coke cooling which may be downstream of the coking, can also be carried out in one and the same vessel. It is then not necessary to transfer the coal or coke from one plant to another in order to be able to carry out, for example, drying, preheating and coking, and optionally also dry coke cooling.
  • the vessel can be relatively small, such as the size and type of a steel pan. Depending on the required output, several individual vessels of the same type, but in contrast to a conventional coking oven, can be used independently of one another. If there is only a small demand, individual vessels can be shut down without further ado.
  • one or more of the process stages is or are carried out in a pressure vessel which is expediently transportable and / or tiltable. This makes it possible to drive under high pressure. It is also possible to feed the cooked coke directly to the customer, for example a blast furnace, with the aid of the vessel itself.
  • the coking vessel thus itself serves at least as part of a transport or conveying device for the cooked coke.
  • a particularly economical process control is obtained if, according to a development of the inventive concept, several, preferably all, process steps are carried out in one and the same vessel.
  • the invention proposes to carry out the drying and / or the preheating and / or the coking and / or the optionally provided dry coke cooling by means of inert gas, which is conducted in a closed circuit of a high-temperature reactor, in which the inert gas is heated or cooled to a temperature adapted for the process step (s) in question.
  • inert gas which is conducted in a closed circuit of a high-temperature reactor, in which the inert gas is heated or cooled to a temperature adapted for the process step (s) in question.
  • the inert gas can also be brought to a higher and / or lower temperature level by means of an additional device in the circuit behind the high-temperature reactor and before it is used in the vessel for drying and / or preheating and / or coking and / or dry coke cooling.
  • the “additional device” can also be, for example, a similar neighboring vessel in which a similar coking process is carried out in another process stage.
  • helium is preferably used as the gas.
  • coal degassing gas e.g. from another similar vessel for drying and / or preheating and / or coking and / or dry coke cooling.
  • the procedure is advantageously carried out so that the coal for drying and / or preheating in the vessel below the temperature range between about 150 and 250 * C, preferably up to about 200 ° C, is heated by means of the gas by direct and / or indirect heating .
  • this temperature range when using an inert gas, it is entirely possible to use both direct and indirect heating or combinations thereof.
  • This process can take place, for example, in the manner of a fluidized bed drying and / or preheating.
  • the coal should be unaffected by gas flows as much as possible, especially in the plastic phase, which occurs in the temperature range of 250 ° C to 600 ° C depending on the type of coal and grain size, the gap volume for the gas passage through the coal filling is missing. Therefore, the coal for coking for piece coke formation is heated at least in the above-mentioned temperature range between about 250 ° C and 600 ° C by means of the gas only by indirect heating, while afterwards the approximately 600 ° C hot coke again forms a gap volume that allows the gas to pass through and so that a uniform direct heating allows.
  • the coal or the coke for post-coking (cooking) in the vessel to the temperature range between about 1100 and 1300 * C , preferably at about 1200 ° C, by means of the gas again by direct and / or indirect heating, which leads to a relatively short post-coking.
  • the method is carried out in a pressure-tight vessel, it is easily possible to carry out the drying and / or preheating and / or the coking of the coal and / or the dry coke cooling in at least one vessel with reduced pressure or under increased pressure, as required.
  • the gas can advantageously be returned to the process after it has been passed through the vessel, if appropriate after cleaning and / or cooling.
  • the fully cooked coke is cooled or uncooled using the e.g. designed as a transport and / or tilting vessel, a blast furnace or other customers, e.g. another similar vessel.
  • a low system outlay is ensured, in particular, if the gas, according to a further embodiment of the inventive concept, possibly under increased pressure, for the direct or indirect heat exchange by in the vessel wall, e.g. in the bottom, provided insertion openings or through lines which preferably protrude into the vessel from above or can be lowered into the interior of the vessel and are removed again from the interior of the vessel through outlet openings or the lines.
  • the invention also relates to a vessel for carrying out a method of the type described above. It is characterized in that it is designed to be pressure-tight by providing a sheet metal jacket, optionally provided with refractory lining, with at least one upper filling opening for the coal and openings or Has lines for the introduction or discharge of the gases, in particular the upper filling opening for the coal can be closed in a pressure-tight manner.
  • this has a pressure-tight sealable, e.g. hinged bottom flap for emptying the vessel from the bottom.
  • the vessel itself can be used as part of the conveying device for the coal or the coke, it can advantageously be transported and / or tilted according to a further development of the inventive concept.
  • the vessel is advantageously adjacent to the consumer, e.g. adjacent to the upper filling opening of a blast furnace or another customer or their conveyor system for feeding the pretreated coal and / or coke to the blast furnace or other customers, so that it e.g. it is sufficient that the vessel can only be tilted in order to be able to deliver the cooked coke from the upper filling opening of the vessel for the coal to the customer.
  • the invention further relates to a system for carrying out the method described at the outset using a vessel of the type described in more detail above.
  • This system is distinguished according to the invention in that the one or more vessels arranged either can be transported individually to the customer and / or a, preferably common conveyor system for the treated coal and / or the coke are assigned to the customer.
  • the one or more vessels arranged one after the other can be transported in predetermined stations, in which they can each be connected to lines for the supply and discharge of at least one of the process gases.
  • the vessels successively supply the required treatment stations, e.g. Go through drying, preheating, coking, dry coke cooling, or combinations thereof.
  • the vessel 1 for carrying out a process for producing coke by coking coal, optionally drying and / or preheating the coal upstream of the coking and optionally a dry coke cooling downstream of the coking is essentially hollow-cylindrical with an upper filling opening 4 for the still moist or, if necessary, already dried and / or preheated coal or for coke still to be post-coked.
  • a lower outlet opening 5 serves for emptying the already dried and / or preheated coal or the fully cooked coke.
  • Filling opening 4 and outlet opening 5 can be closed in a pressure-tight manner by means of a pivotable cover 14 or a pivotable bottom flap 11.
  • the walls of the vessel 1, including the bottom flap 11 and the lid 14, have a sheet metal jacket 3 equipped with a correspondingly temperature-resistant or fireproof lining 2.
  • the gases required for the process control i.e. the dry gas, the preheating gas, the coking gas and the cooling gas for the purpose of direct heating and / or cooling of the coal or coke into the interior of the vessel 15, can be reached from lines 12 be initiated.
  • the coal therein can be dried, preheated and coked in one and the same vessel 1, and the coke can then be cooled dry.
  • the respective gas which flows from bottom to top through the coal bed formed in the interior of the vessel 15 after the coal has been filled in from above through the filling opening 4, optionally leaves the interior of the vessel 15 together with the distillation gas through upper, preferably uniformly Openings 7 distributed over the circumference of the side wall of the vessel 1 and lines 13 connected thereto.
  • the gases required for the respective process stages for the purpose of indirect heating and / or cooling of the coal or coke can also be taken from above via lines 18 and their subsequent heat exchanger coils trained lines 16 are introduced into the lower part of the vessel interior 15.
  • the lines 16 can, for example, be lowered into the interior of the vessel 15 with the lid 14 by relative movement of the lid 14 and the remaining part of the vessel 1 and can also be withdrawn upwards with this.
  • the lid 14 is expediently not pivotally hinged to the container body, but rather can be raised and lowered vertically.
  • the interlocks which may be required for sealing the filling opening 4 and the outlet opening 5 by means of the cover 14 and the bottom flap 11 are not shown in the drawing.
  • FIG. 2 shows how several vessels 1 of the type illustrated in FIG. 1 can be used, for example, in the context of an overall system.
  • the vessels 1, which are inherently transportable in terms of their size and weight, are arranged in a stationary manner next to one another in this case above the horizontal section of a conveyor system 10. While the production of the coke e.g. in one and the same vessel 1 by drying, preheating, coking and, if necessary, dry coke cooling, the cooked coke is thrown downwards onto the conveyor system 10 by opening the bottom flap 11.
  • the processes can be carried out in the individual vessels 1 e.g. run at different times, so that the consumer, in the case shown a blast furnace 9 with a filling opening 8, the cooked coke is fed relatively evenly over a sloping section of the conveyor system 10.
  • the containers 1 themselves in a transportable manner and to promote the respective container 1 with ready-cooked coke via the filling opening 8 of the customer, in the illustrated case of a blast furnace 9, where the coke either opens by the bottom flap 11 can be delivered to the customer at the lower outlet opening 5 or by tipping over from the upper filling opening 4.
  • the conveyor system 10 is unnecessary, but means for transporting and possibly tilting the vessels 1 must be provided.
  • the vessels 1 remain stationary during the drying and / or preheating and / or the coking and the optionally dry coke cooling, and the gases for drying, preheating, coking and optionally dry coking cooling are provided one after the other are supplied
  • the individual vessels 1 for example, pass through four process stations in succession, with drying in the first station, preheating in the second station, coking in the third station and the dry coke cooling which may be provided in the fourth station he follows. It is also evident possible, for example, to combine the drying and preheating process steps in one station or to carry out only one process step, for example dry coke cooling, in one station and the other process steps in a common station.
  • the treatment gases are supplied according to the invention for the indirect drying, preheating and coking stage expediently via the lines 18 in the closed circuit of a high-temperature reactor 17 known per se, which delivers inert gases at the temperature required for the respective process stage. Additional heating or cooling devices, for example one or more neighboring vessels, can also be switched on in the closed circuit.
  • the appropriately tempered inert gases for the heat transfer can also be supplied by a separate inert gas source 19, to which the necessary heating and / or cooling devices are assigned.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Coke Industry (AREA)
  • Drying Of Solid Materials (AREA)
EP86105402A 1985-05-06 1986-04-18 Procédé, récipient et installation pour la fabrication de coke Withdrawn EP0200971A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3516227 1985-05-06
DE19853516227 DE3516227A1 (de) 1985-05-06 1985-05-06 Verfahren, gefaess und anlage zur erzeugung von koks

Publications (2)

Publication Number Publication Date
EP0200971A2 true EP0200971A2 (fr) 1986-11-12
EP0200971A3 EP0200971A3 (fr) 1988-03-02

Family

ID=6269943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105402A Withdrawn EP0200971A3 (fr) 1985-05-06 1986-04-18 Procédé, récipient et installation pour la fabrication de coke

Country Status (2)

Country Link
EP (1) EP0200971A3 (fr)
DE (1) DE3516227A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737262A1 (de) * 1987-11-03 1989-05-24 Voest Alpine Ind Anlagen Verfahren zur vorbehandlung eines stueckigen kohlenstofftraegers
DE3803558A1 (de) * 1988-02-06 1989-08-17 Didier Eng Verfahren zur verkokung von schuettkohle sowie verkokungsgefaess fuer die durchfuehrung eines solchen verfahrens

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE15211C (de) * D. green in London Apparat zur trocknen Destillation von Kohle unter Benutzung von überhitztem Dampf
DE499232C (de) * 1926-10-16 1930-06-04 Rech S Et De Perfectionnements Mehrkammerofen zur Destillation von verkohlbaren Stoffen bei niedriger Temperatur
GB428840A (en) * 1935-03-07 1935-05-20 Fredrik Carlsson A process for carbonisation of coal or the like
FR808309A (fr) * 1935-06-03 1937-02-03 Perfectionnements aux procédés et dispositifs de carbonisation dans les fours à couloirs des schistes, lignites, houilles et analogues
US2138321A (en) * 1936-07-18 1938-11-29 Bratasianu Constantin Paul Special retort and apparatus for refining raw materials in solid, liquid, vapor, and gaseous form
GB823530A (en) * 1955-09-05 1959-11-11 Frederick Joseph West Improvements relating to the carbonisation of coal
US3398058A (en) * 1963-08-20 1968-08-20 Campbell Carl Process and apparatus for carbonizing fuel
US4052168A (en) * 1976-01-12 1977-10-04 Edward Koppelman Process for upgrading lignitic-type coal as a fuel
LU82773A1 (fr) * 1980-09-16 1982-05-10 Centre Rech Metallurgique Procede pour fabriquer du coke metallurgique
DE3516225A1 (de) * 1985-05-06 1986-11-06 Didier Engineering Gmbh, 4300 Essen Verfahren, gefaess und anlage zur erzeugung von koks
DE3516226A1 (de) * 1985-05-06 1986-11-06 Didier Engineering Gmbh, 4300 Essen Verfahren, gefaess und anlage zur erzeugung von koks

Also Published As

Publication number Publication date
DE3516227C2 (fr) 1987-11-26
EP0200971A3 (fr) 1988-03-02
DE3516227A1 (de) 1986-12-04

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Inventor name: BAUER, HARTMUT, DR.-ING.

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