EP0330819A1 - Verfahren zur Verkokung von Schüttkohle sowie Verkokungsgefäss für die Durchführung eines solchen Verfahrens - Google Patents

Verfahren zur Verkokung von Schüttkohle sowie Verkokungsgefäss für die Durchführung eines solchen Verfahrens Download PDF

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Publication number
EP0330819A1
EP0330819A1 EP89100771A EP89100771A EP0330819A1 EP 0330819 A1 EP0330819 A1 EP 0330819A1 EP 89100771 A EP89100771 A EP 89100771A EP 89100771 A EP89100771 A EP 89100771A EP 0330819 A1 EP0330819 A1 EP 0330819A1
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EP
European Patent Office
Prior art keywords
coking
vessel
coal
shaped bodies
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Withdrawn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
EP89100771A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dietrich Prof. Dr.-Ing. Wagener
Gregor Dipl.-Ing. Kaschel
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 EP0330819A1 publication Critical patent/EP0330819A1/de
Withdrawn legal-status Critical Current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
    • C10B15/00—Other coke ovens
    • 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
    • C10B47/02—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with stationary charge
    • 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
    • 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

Definitions

  • the invention relates to a process for coking loose coal, in which the coal is first filled into a coking vessel with the incorporation of shaped bodies to form gas channels and the shaped bodies are left in the coal / coke filling at least until a sufficiently strong coke channel wall is formed.
  • This process requires the complex transportation of the pound cake from the ramming box into the oven chambers. An extraordinarily high compression is necessary for this in order to achieve the desired firmness of the pound cake for transport. Furthermore, the pound cake is limited in its dimensions due to the circumstances.
  • the object of the present invention is to provide a method of the type mentioned at the outset for the purpose of autothermal coking and thus to make the coking process more economical.
  • This object is achieved according to the invention by a method according to which, for the purpose of autothermal coking, the coal to be coked, possibly already preheated, is poured into the coking vessel as loose coal and, if necessary, compressed by shaking and / or stamping, the coal for starting the coking process directly and / or indirectly heated by means of the shaped bodies and coked in at least one layer surrounding the shaped bodies, pulling the shaped bodies out of the coal / coke filling leaving channels behind and / or possibly using tubular shaped bodies with gas passage openings in their walls, after the pressure-tight sealing of the Coking vessel in the left or free from the moldings channels held an oxygen carrier gas, such as air, introduced for partial combustion of the distillation gases flowing into the channels and continues the coking process through the entire coal filling by means of the resulting heat, and discharges the diluted distillation gases from the coking vessel.
  • an oxygen carrier gas such as air
  • the coking vessel itself serves as a compression or tamping vessel, which can advantageously be done, for example, with a coking vessel, as is known per se from DE-OS 35 16 227.
  • a coking vessel as is known per se from DE-OS 35 16 227.
  • Such a correspondingly modified coking vessel is particularly suitable and expedient, since it is relatively compact, largely pressure-tight, closable and transportable and / or tiltable.
  • heated moldings are used.
  • a direct and indirect heating of the coal takes place as described above and also by supplying a hot inert gas.
  • the molded articles can be pulled out of the coal filling or the coke cake, so that the required ducts with their are deposited in the coal wall layers previously stored around the molded articles, which are now coked and largely solidified whole area for the supply of the oxygen carrier gas are available.
  • tubular shaped bodies can also be removed from the coal filling or from the coke cake after the coking process has been started, but can remain if they are formed on all sides in their tube wall with gas passage openings through which the hot inert gas and then the oxygen initially Carrier gas can be supplied.
  • the initial heating of the coal then takes place directly through the inert gas and indirectly through the heat radiation from the tube walls heated up in the process. This can also be done, for example, using molded bodies designed as field tubes with perforated outer shells.
  • the oxygen carrier gas For the subsequent supply of the oxygen carrier gas, open channels are required in any case, from which either the shaped bodies have been pulled out beforehand or the shaped bodies formed as perforated tubes are kept free, the oxygen carrier gas through the openings in the jacket of the tubes and their end openings in the coal / coke fillings escapes.
  • the oxygen carrier gas By supplying the oxygen carrier gas, part of the distillation gases are burned, creating the hot gas that continues the coking process autothermally.
  • the distillation gas diluted with the corresponding flue gases penetrates under the lid of the coal / coke filling or the coke cake and is discharged from the coking vessel.
  • the previously heated and / or heated inside the coal filling must consequently remain in the coal filling until a sufficiently strong coke duct wall is formed and then be removed.
  • Only the tubular, perforated moldings can vary depending Training and requirements can either be pulled out of the coking vessel after the coking process has been started and sufficient coking of the channel walls has been carried out, or can be left in the coking vessel until the end of the coking process, i.e. initially for direct and / or indirect heating and then for maintaining Gas channels for the unimpeded supply of the oxygen carrier gas.
  • the shaped bodies can be heated or heated before being inserted into the coking vessel in a heating furnace and / or after insertion by applying hot gas or electrical energy, for example via electrical connections in the coking vessel itself.
  • the invention also relates to a coking vessel with, if appropriate, hinged or removable vessel lid and vessel bottom as well as with inlets and outlets for the gaseous media or the electrical connections for carrying out the previously explained methods.
  • a gas distribution space is arranged on the inlet side and a gas collection space on the outlet side, which are in flow connection via the channels left behind or kept free by the shaped bodies.
  • the shaped bodies penetrate the inside of the vessel at a distance of about 150 to 250 mm from one another.
  • the shaped bodies consist of metallic and / or ceramic material.
  • the field pipe versions can be equipped with two ceramic pipes or combined with a metallic and ceramic pipe.
  • the shaped bodies designed as simple tubes or as field tubes have bores of a predetermined number and predetermined diameter distributed over their length in their jacket or outer jacket. This allows the gas distribution to be adjusted via the amount of coal / coke filling.
  • the shaped bodies taper conically against their direction of extraction.
  • the shaped bodies penetrate the vessel lid or the vessel bottom and can be pulled out of the interior of the vessel with this.
  • another vessel lid can then be placed pressure-tight on the vessel jacket.
  • holding or guide sleeves for the shaped bodies can also be arranged on the lid and / or the bottom inner surface or in the area thereof.
  • the holding or guide sleeves can be combined, for example, on the lid side and / or the bottom side to form a unit which can be pulled out of the interior of the vessel with the shaped bodies. This leads to considerable time savings.
  • a gas collecting space with discharge lines for the distillation gases can also be provided on the cover side in the interior of the vessel.
  • a gas distribution space for the hot inert gas and / or the oxygen carrier gas is arranged on the bottom, from which the gases enter the coal filling or the coke cake via the channels or pipes, expediently via openings or Pipe socket that are aligned with the channels or tubular shaped bodies and possibly open into the lower openings.
  • the gas supply can be further simplified in that in the area of the vessel lid and optionally the vessel bottom there is an intermediate floor provided with through-holes, in which the solid molded bodies or pipes are guided or held.
  • the single figure illustrates in vertical section a coking vessel according to the invention for carrying out the method according to the invention.
  • the coking vessel 1 for carrying out the method according to the invention for the autothermal coking of loose coal is essentially hollow cylindrical. It contains a sheet metal jacket 3 coated on the inside with refractory lining 2 and is on the top and bottom located end faces open, where it can be closed pressure-tight on the top with a hinged vessel lid 4 and on the underside with a removable vessel bottom 5.
  • these molded bodies 6 can also be made of heat-storing material, e.g. Ceramics, either tubular or solid as rods or mandrels. In any case, the shaped bodies are guided and held at the correct distance from one another by means of sleeves 7 in intermediate floors 8 and 9.
  • the upper intermediate floor 8 contains, in addition to the passage openings for the shaped bodies 6, which are equipped with the sleeves 7, a perforation distributed over the entire area for the unhindered passage of the rising gas and filling openings 10 for the preferably already dried and preheated coal, optionally also for the passage of the punches, if the coal is to be mashed.
  • the lower intermediate floor 9 contains, in addition to the receiving openings provided with the sleeves 7 for the end sections of the shaped bodies 6, the perforation already described for the passage of the gas and the filling openings 10 for the passage of the coal into the bottom-side vessel space.
  • the vessel wall at the level of the gas collecting space 11 contains a plurality of gas discharge lines 13 distributed around the circumference of the vessel 1.
  • the vessel bottom 5 is double-walled and contains the gas distribution space 12, which is used to distribute the inflowing hot process gas into the tubular shaped body 6 and then the oxygen carrier gas for a balanced supply of gases into the interior of the vessel 14 is used.
  • the inlet opening 15 for the hot process gas which flows in via a feed pipe 16 from a high-temperature reactor 17, and after switching over for an oxygen carrier gas.
  • the method according to claim 1 proceeds as follows:
  • the intermediate bases 8 and 9 in the region of the vessel lid 4 and in the region of the vessel base 5 are removably inserted into the vessel 1, which is closed at the top and open at the top, and which each have the sleeves 7 for holding or guiding the shaped bodies 6 designed as tubes.
  • These tubular shaped bodies 6 are slightly conical towards the bottom and are used with the intermediate floors 8 and 9 before filling the loose coal into the coking vessel 1.
  • the vessel lid 4 is closed, which is pressure-tight on its outer peripheral edge with respect to the vessel jacket 1.
  • pipe sockets 18 are arranged in the vessel bottom 5, which, starting from the gas distribution space 12 formed inside the vessel bottom, pass through the lining 2 of the vessel bottom 5 and have settled into the tubular shaped bodies 6 in a gas-tight manner.
  • Hot inert gas is introduced from the high-temperature reactor 17 via the feed pipe 16 through the inlet opening 15 into the process gas distribution chamber 12 and passes through the pipe socket 18 into the tubular shaped body 6, the pipe walls of which have outlet holes distributed over the height.
  • the hot gas passing through the outlet holes into the interior of the vessel 14 as well as the heat radiation from the tube walls lead to direct and indirect heating of the coal until coking of at least the layers of carbon stored around the tubes until the formation of a coke channel wall which is sufficiently strong for attachment.
  • the supply of the hot gas is interrupted and an oxygen carrier gas is introduced for this, which continues the coking process autothermally by rising from the tubular shaped bodies 6 in the coal filling and continuing the coking process by partial combustion of the distillation gases with the help of the hot gases formed in the process .
  • the diluted distillation gas arrives in the gas collecting space 11, from where the gas is led to the outside via the discharge lines 13 for further use.
  • the moldings can be removed upwards from the vessel 1 together with the upper intermediate base 8.
  • an oxygen carrier gas is passed through the feed pipe 15 via the bottom-side gas distribution chamber 12 and its pipe socket 18 into the interior of the vessel 14, where it is distributed directly via the channels.
  • the molded bodies 6 are heated to a temperature of 800 to 1200 ° C. before being inserted into the coking vessel 1, e.g. in a heating oven.
  • These shaped bodies 6, which are solid as rods, mandrels or tubular with a thick wall made of heat-storing material, such as ceramic, are only left in the coking vessel 1 until a sufficiently strong coke channel wall is formed. Thereafter, the shaped bodies 6 are removed and an oxygen carrier gas, for example air, is likewise introduced through the same feed pipe 16 via the pipe stubs 18 and the channels formed by the shaped bodies 6 into the coal filling for the combustion of a part of the distillation gases.
  • an oxygen carrier gas for example air
  • the coking process is continued by the resulting hot gas, as in the first embodiment.
  • the distillation gas diluted with the resulting flue gas also after collection in the upper gas collecting space 11, is led to the outside via the discharge lines 13.
  • the vessel bottom 5 is removed or the vessel 1 is tilted and the vessel lid 4 is pivoted away. Then the coking vessel 1 can be emptied downwards, the lower intermediate floor 9 still remaining with its sleeves 7 also being pulled off on the floor side.
  • these shaped bodies 6 can also be made, for example, of one material and designed in accordance with the coking vessel 1 so that they are connected to electrical connections and electrically heated after being inserted into the coking vessel 1. It is particularly expedient for the embodiment to form the molded body 6 in one piece in a vertically removable vessel lid 4 attached and designed with electrical connections so that they can be placed and removed again as a unit from molded bodies 6 and vessel lid 4 with a handle on the vessel 1 and its electrical contacts. If this cover unit has been removed in accordance with the process, a new container cover 4, which is not equipped with the shaped bodies 6, is placed pressure-tight on the container jacket for the further course of the process.
  • the coking vessel 1 for example for supplying the hot gas and the oxygen carrier gas from the vessel lid 4, which is then to be designed approximately like the vessel bottom 5.
  • this part that is, according to the drawing of the vessel bottom 5, can only be provided with openings instead of the pipe socket 18, with which it is pushed onto the lower ends of the tubular shaped bodies 6 or are aligned with the channels which, after the shaped bodies have been removed 6 remain in the coke cake.
  • the pipe sockets 18 can also extend vertically into the lower intermediate floor 9 and project freely therefrom in order to be able to use the pipe sockets 18 to pull the shaped bodies 6 individually or together with the intermediate floor out of the interior of the vessel.
  • tubular shaped bodies 6 can also be designed as field tubes made of two ceramic tubes or combined of a metallic and a ceramic tube, the outer wall of which has different heights Through holes of different numbers and sizes are provided. Furthermore, it is advantageous to correspondingly conically shape at least the outer tube 6 or the outer wall of the field tube and to produce at least the same from a ceramic refractory material.
  • the upper guide sleeves 7 can also be attached directly to the inner surface of the vessel lid 4 and the lower guide sleeves 7 directly to the inner surface of the vessel bottom 5 for certain cases . In this way, the intermediate floors 8 and 9 could be omitted.
  • the insert parts ie the intermediate floors 8, 9 and the shaped bodies 6, should expediently consist entirely of ceramic refractory material based on SiC or Al2O3.

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  • 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)
EP89100771A 1988-02-06 1989-01-18 Verfahren zur Verkokung von Schüttkohle sowie Verkokungsgefäss für die Durchführung eines solchen Verfahrens Withdrawn EP0330819A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883803558 DE3803558A1 (de) 1988-02-06 1988-02-06 Verfahren zur verkokung von schuettkohle sowie verkokungsgefaess fuer die durchfuehrung eines solchen verfahrens
DE3803558 1988-02-06

Publications (1)

Publication Number Publication Date
EP0330819A1 true EP0330819A1 (de) 1989-09-06

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Application Number Title Priority Date Filing Date
EP89100771A Withdrawn EP0330819A1 (de) 1988-02-06 1989-01-18 Verfahren zur Verkokung von Schüttkohle sowie Verkokungsgefäss für die Durchführung eines solchen Verfahrens

Country Status (2)

Country Link
EP (1) EP0330819A1 (enrdf_load_stackoverflow)
DE (1) DE3803558A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984019A (zh) * 2010-10-26 2011-03-09 西峡龙成特种材料有限公司 重力推进式煤物质分解设备
CN102504882A (zh) * 2011-08-23 2012-06-20 余式正 一种无废气排放、无污染的干馏—气化垃圾处理炉
CN103160291A (zh) * 2011-12-09 2013-06-19 新疆美特镁业有限公司 粉煤制焦设备及制焦方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102911677B (zh) * 2012-10-26 2014-02-26 太原理工大学 一种载热气体用于煤的热解装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1675315A (en) * 1922-12-22 1928-06-26 Trent Process Corp Process of continuously distilling carbonaceous fuel
US1838883A (en) * 1926-09-14 1931-12-29 Trent Process Corp Process for producing carbonized particles from finely pulverized coal
DE551940C (de) * 1932-06-08 Otto & Co Gmbh Dr C Verfahren zum Verkoken verdichteter Kohlekuchen
DE609551C (de) * 1930-10-12 1935-02-18 E H Gustav Hilger Dr Ing Verfahren zur Herstellung von Stampfkuchen mit in der Mitte angeordneten senkrechtenGasabzugskanaelen in Stampfkaesten fuer die Beschickung von Koksoefen mit liegenden Ofenkammern
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
DE3516227A1 (de) * 1985-05-06 1986-12-04 Didier Engineering Gmbh, 4300 Essen Verfahren, gefaess und anlage zur erzeugung von koks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193777B (de) * 1961-12-09 1965-05-26 Hazemag Hartzerkleinerung Mahltrocknungsvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE551940C (de) * 1932-06-08 Otto & Co Gmbh Dr C Verfahren zum Verkoken verdichteter Kohlekuchen
US1675315A (en) * 1922-12-22 1928-06-26 Trent Process Corp Process of continuously distilling carbonaceous fuel
US1838883A (en) * 1926-09-14 1931-12-29 Trent Process Corp Process for producing carbonized particles from finely pulverized coal
DE609551C (de) * 1930-10-12 1935-02-18 E H Gustav Hilger Dr Ing Verfahren zur Herstellung von Stampfkuchen mit in der Mitte angeordneten senkrechtenGasabzugskanaelen in Stampfkaesten fuer die Beschickung von Koksoefen mit liegenden Ofenkammern
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
DE3516227A1 (de) * 1985-05-06 1986-12-04 Didier Engineering Gmbh, 4300 Essen Verfahren, gefaess und anlage zur erzeugung von koks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984019A (zh) * 2010-10-26 2011-03-09 西峡龙成特种材料有限公司 重力推进式煤物质分解设备
CN102504882A (zh) * 2011-08-23 2012-06-20 余式正 一种无废气排放、无污染的干馏—气化垃圾处理炉
CN103160291A (zh) * 2011-12-09 2013-06-19 新疆美特镁业有限公司 粉煤制焦设备及制焦方法
CN103160291B (zh) * 2011-12-09 2016-06-08 新疆美特镁业有限公司 粉煤制焦设备及制焦方法

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Publication number Publication date
DE3803558A1 (de) 1989-08-17
DE3803558C2 (enrdf_load_stackoverflow) 1989-11-16

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