EP0054506A2 - Verfahren und Vorrichtung zur ununterbrochenen Herstellung von metallurgischem Koks - Google Patents

Verfahren und Vorrichtung zur ununterbrochenen Herstellung von metallurgischem Koks Download PDF

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Publication number
EP0054506A2
EP0054506A2 EP81630073A EP81630073A EP0054506A2 EP 0054506 A2 EP0054506 A2 EP 0054506A2 EP 81630073 A EP81630073 A EP 81630073A EP 81630073 A EP81630073 A EP 81630073A EP 0054506 A2 EP0054506 A2 EP 0054506A2
Authority
EP
European Patent Office
Prior art keywords
carboniferous
chamber
prevails
matter
temperature
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Withdrawn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
EP81630073A
Other languages
English (en)
French (fr)
Other versions
EP0054506A3 (de
Inventor
Théophile Martens
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.)
Siderurgie Maritime (maritieme Staalnijverheid) Sidmar Sa
Sidmar SA
Original Assignee
Siderurgie Maritime (maritieme Staalnijverheid) Sidmar Sa
Sidmar SA
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 Siderurgie Maritime (maritieme Staalnijverheid) Sidmar Sa, Sidmar SA filed Critical Siderurgie Maritime (maritieme Staalnijverheid) Sidmar Sa
Publication of EP0054506A2 publication Critical patent/EP0054506A2/de
Publication of EP0054506A3 publication Critical patent/EP0054506A3/de
Withdrawn legal-status Critical Current

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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
    • C10B1/00—Retorts
    • C10B1/02—Stationary retorts
    • C10B1/04—Vertical retorts
    • 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
    • C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
    • C10B47/20—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge according to the moving bed type

Definitions

  • the present invention relates to a process for the continuous production of metallurgical coke and to the installation necessary for implementing the process.
  • the manufacture of metallurgical coke which is essentially discontinued at the present time, consists of placing raw materials, mainly coking coal, in carbonization cells and heating these materials which, by distillation and agglutination, give products having the well-known form of coke used in metallurgical plants.
  • raw materials mainly coking coal
  • carbonization cells carbonization cells
  • heating these materials which, by distillation and agglutination, give products having the well-known form of coke used in metallurgical plants.
  • There are currently economic difficulties in such manufacture because of the decrease in coking coal reserves and the increase in the price of these coals. These difficulties are also becoming more acute due to the rapid increase in the price of labor for the construction of new conventional manufacturing units.
  • This process essentially provides for agglomeration of non-coking fine charcoal in the form of balls or briquettes whose dimensions are smaller than those of the final product, in that the raw agglomerates thus obtained are mixed with charcoal coking end and in that this mixture is subjected to a carbonization treatment.
  • the aim of the present invention is to propose a process for the continuous production of metallurgical coke superior to known processes, both from the economic point of view and from the point of view of environmental protection.
  • This object is achieved by the process according to the invention which provides for carbonizing carboniferous materials, such as coking coals or deemed non-coking coals, by indirect heating, characterized in that the carboniferous materials are moved continuously and in a vertical direction through an essentially closed system, which one adjusts the conditions of transfer of heat towards carboniferous materials in the process of carbonization, as well as their speed of movement so as to limit the cooking time to 6-7 hours and to establish in the system in which the carbonization takes place, zones of determined temperatures increasing in the direction of the displacement of the materials and that it is ensured that all the gaseous or liquid compounds which are formed during the process arrive from their formation zone in the specific zone where the maximum temperature prevails, from where they are evacuated.
  • carboniferous materials are moved continuously and in a vertical direction through an essentially closed system, which one adjusts the conditions of transfer of heat towards carboniferous materials in the process of carbonization, as well as their speed of movement so as to limit the cooking time to 6-7 hours and to establish in the system in which the
  • the passage of thermal energy from the outside to the caboniferous materials is accelerated by carbonization in a system which has a thermal conductivity greater than that which corresponds to conventional practice, the energy input being carried out by means of a caloriferous medium brought to 1000-1200 ° C.
  • a first zone is established where a temperature of 150-160 ° C. prevails, that in order to encourage the selective release of tars, and thereby the fusion of the coals, a zone is established where a temperature of 350-360 ° C prevails, that in order to cause the selective formation of condensable products, a zone is established where a temperature prevails from 500-600 ° C , and finally, that in order to complete the solidification of the coke produced, a last zone is established where a temperature of 1000 ° C. prevails.
  • the difference in volatile matter yields between slow heating and rapid heating is essentially due to the coking of bituminous products, such as primary tars, inside the carbon grains before the transition to the vapor phase which is all the more important that the heating is slower.
  • Very little cracked tars are products of high molecular mass, containing up to 50 to 60% of pitch and whose elementary constitution is very close to that of the starting coal with regard to oxygen, sulfur and nitrogen and little different for carbon and hydrogen. They can be represented as barely depolymerized coal fragments.
  • the cracking reactions produce constituents which are less polymerized than carbon and whose significant proportions will be liquids at pyrolysis temperatures.
  • the saturation of the two radicals formed by the break C - C requires hydrogen.
  • aromatization and condensation reactions consist in the formation of aromatic groups which are increasingly extended at the same time by dehydrogenation, therefore aromatization of saturated cycles and union of aromatic groups between them by formation of aromatic C - C bonds. . These reactions release hydrogen and lead to the formation of a solid carbon residue, either from the initial carbon or from the intermediate liquids formed.
  • the balance between the two types of reaction is a function of the hydrogen available to combine with oxygen and carbon in volatile matter.
  • the rate of pyrolysis of coal depends of course on its temperature, but also on time.
  • the reaction rate depends on their concentration and decreases as a function of time. Therefore, at constant temperature, the state of the reacting system is defined at all times by the number of unreacted molecules; and the reaction speed is only a function of this number.
  • a double wall (1) of steel delimits a cylindrical chamber (0) as well as an annular chamber (2,3) concentric, which 'There are provided passages (6) between the two chambers, the annular chamber being subdivided into at least two compartments (2) and (3) by at least one partition (7) essentially horizontal which. comprises passages (5), the lower compartment (3) comprising an inlet (4) for heating gas and that the ends of the cylindrical chamber (0) comprise airlocks serving for the introduction of carboniferous materials from above and at the evacuation of coke produced from below.
  • a conduit (10) also annular which is connected by several conduits (11) to said chamber as well as to a gas extraction system.
  • the cylindrical chamber (0) can be roughly subdivided into 3 main parts, namely a drying part (A), a heating part (B) and a cooling part (C).
  • the carboniferous materials are introduced continuously into part (A) via an airlock, not shown. They pass in turn through the different zones (160, 350, 600, 1000) of the heating part (B).
  • the gases and the liquids which are either formed, or cracked or otherwise modified in their physical and chemical constitution, are evacuated by the passages (6) and arrive in the compartment (2) where they are brought into contact with steam resp. the air. Indeed, the compartment (3) is supplied with steam and air which is introduced from below, through the inlet (4).
  • the gases which arrive from the compartment (2) in the duct (10), through the passages (11), are mainly hydrogen and l carbon monoxide.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Coke Industry (AREA)
EP81630073A 1980-12-12 1981-11-11 Verfahren und Vorrichtung zur ununterbrochenen Herstellung von metallurgischem Koks Withdrawn EP0054506A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82999 1980-12-12
LU82999A LU82999A1 (fr) 1980-12-12 1980-12-12 Procede et installation pour la fabrication en continu de coke metallurgique

Publications (2)

Publication Number Publication Date
EP0054506A2 true EP0054506A2 (de) 1982-06-23
EP0054506A3 EP0054506A3 (de) 1983-01-26

Family

ID=19729543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630073A Withdrawn EP0054506A3 (de) 1980-12-12 1981-11-11 Verfahren und Vorrichtung zur ununterbrochenen Herstellung von metallurgischem Koks

Country Status (2)

Country Link
EP (1) EP0054506A3 (de)
LU (1) LU82999A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005428A1 (en) * 2002-07-03 2004-01-15 Wesfarmers Premier Coal Limited Coal drying and charring process
AU2003243816B2 (en) * 2002-07-03 2005-05-12 Premier Coal Limited Coal drying and charring process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR534537A (fr) * 1920-02-28 1922-03-28 Perfectionnements à la fabrication du coke
GB205268A (en) * 1922-08-15 1923-10-18 Thomas Malcolm Davidson Improvements in and relating to the destructive distillation of coal and other carbonaceous substances
GB236420A (en) * 1924-09-23 1925-07-09 Jackson Res Corp Process of distilling carbonaceous material such as oil-shale
GB1517244A (en) * 1976-03-24 1978-07-12 Hollaway J Apparatus and method for the carbonisation of coal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005428A1 (en) * 2002-07-03 2004-01-15 Wesfarmers Premier Coal Limited Coal drying and charring process
AU2003243816B2 (en) * 2002-07-03 2005-05-12 Premier Coal Limited Coal drying and charring process

Also Published As

Publication number Publication date
LU82999A1 (fr) 1982-07-07
EP0054506A3 (de) 1983-01-26

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Inventor name: MARTENS, THEOPHILE