EP0630957A1 - Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen - Google Patents

Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen Download PDF

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Publication number
EP0630957A1
EP0630957A1 EP93870115A EP93870115A EP0630957A1 EP 0630957 A1 EP0630957 A1 EP 0630957A1 EP 93870115 A EP93870115 A EP 93870115A EP 93870115 A EP93870115 A EP 93870115A EP 0630957 A1 EP0630957 A1 EP 0630957A1
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EP
European Patent Office
Prior art keywords
enclosure
oven according
resistors
vessel
condenser
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
EP93870115A
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English (en)
French (fr)
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EP0630957B1 (de
Inventor
Rémy Gourhan
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Individual
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Individual
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Publication date
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Priority to EP93870115A priority Critical patent/EP0630957B1/de
Priority to DE69320946T priority patent/DE69320946T2/de
Priority to AT93870115T priority patent/ATE170906T1/de
Publication of EP0630957A1 publication Critical patent/EP0630957A1/de
Application granted granted Critical
Publication of EP0630957B1 publication Critical patent/EP0630957B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C10B19/00—Heating of coke ovens by electrical means
    • 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
    • C10B1/10—Rotary 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
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form

Definitions

  • the invention relates to an oven for pyrolytic destruction under reduced pressure of organic industrial waste, comprising a sealed tubular enclosure, a pumping unit connected to the enclosure through a condenser, means for introducing the waste into the enclosure and heating means thereof.
  • Patent document EP-A-0 324 668 has proposed carrying out pyrolysis under reduced pressure, at temperatures between 400 ° and 600 ° C. According to this document, the destruction was complete enough to generate only non-polluting and marketable by-products, or usable on site as "clean" fuels in thermal energy generators;
  • the ovens according to EP-A-0 324 668 consisted of metallic tubular enclosures, rotating around their axis, and arranged in chambers in refractory masonry for heating from outside the enclosures.
  • the object of the invention is to improve the efficiency of vacuum pyrolysis on an industrial scale.
  • the invention provides an oven for the pyrolytic destruction under reduced pressure of organic industrial waste, comprising a sealed tubular enclosure, a pumping group connected to the enclosure through a condenser, means for introducing the waste into the enclosure, and heating means thereof, characterized in that the heating means consist of rectilinear electrical resistors extended parallel to the main axis inside the enclosure near the wall, mounted bare and capable of being brought, by passing current from an external source, to a temperature of at least 1,200 ° C.
  • the Applicant has discovered, during its work, that it was possible to obtain a practically complete pyrolysis of industrial organic waste by operating under reduced pressure at an average temperature of 400 to 600 ° C., provided that it exists in l 'pyrolysis enclosure for radiant surfaces brought to at least 1,200 ° C. It is assumed that, for temperatures below about 600 ° C, the pyrolytic decomposition obeys the laws of thermodynamics. On the other hand, for molecules whose stability is not affected at this temperature, there would be in the radiation spectrum (in red and clean infrared) bands or lines capable of making the stable molecules resonate, and to dissociate them.
  • a refractory lining applied to the internal surface of the enclosure opposite the resistances, and elongated reflective screens between the refractory lining and the resistors.
  • the resistors will consist of Inconel tubes capable of continuously supporting the required temperature, and of satisfactorily resisting waste vapors and decomposition products.
  • an oven for pyrolytic destruction under reduced pressure comprises a sealed enclosure 1 as a whole, comprising a tubular body 10 designed to withstand relative pressures directed towards the main axis of at least one bar (105 Pa), and two bottoms in domed caps 11 and 12, also provided for supporting external overpressures.
  • a bottom 11 is opening, and provided with a peripheral seal to ensure sealing when this bottom is closed.
  • This shaft 14 has transmitted the rotation of the motor to a cylindrical basket 13, perforated, the axis of which, in extension of the shaft 14 a , is parallel to that of the body 10, but offset vertically downwards.
  • Rollers 13 a not visible in FIG. 1, support the basket 13 in enclosure 1.
  • heating resistors 15 consisting of Inconel 601 tubes extended parallel to the axis of the body, in the space between the basket and the upper part of the body 10, and released by the vertical offset between the basket 13 and body 10 axes.
  • the upper wall of the body, facing the resistors 15, is provided with a refractory lining 16, and polished plates to form reflectors 17 are disposed between the resistors 15 and the refractory lining 16, and have folded edges to accentuate the concentration. radiation towards the axis of the body 10.
  • the resistors are supplied with electrical energy by an adjustable source at low impedance 19 (approximately 1,000 amperes at a few tens of volts). They are calculated to reach radiant surface temperatures of at least 1,200 ° C.
  • the enclosure 1 is arranged in an outer refractory lining so that the body temperature reaches, in regime, a temperature between 400 and 600 ° C.
  • the pumping group 4 comprises, conventionally when it comes to evacuating the enclosure a mixture of condensable vapors and noncondensable gases, an ejector 40 or a converging nozzle injects a liquid jet into a diverging nozzle opening into a liquid box from which the gases entrained by the jet are taken up by a liquid ring pump 41.
  • the condenser 2 has two towers 20 and 21, where multiple nozzles 20 a and 21 a respectively spray water in jets directed downwards.
  • the water and the condensates collect in a lower collector 22, from where a pump 23 sends them into a separator 3, consisting of a cover 30 with baffled partitions 31 and 32.
  • a pipe 34 evacuates the water for allocate in the direction of the nozzles 20a and 21a, while the hydrocarbons in a supernatant chamber 33 are removed by skimming.
  • the enclosure In normal operation for the pyrolytic destruction of liquid waste, the enclosure is placed under vacuum by the pumping unit 4, then the resistors 15 are energized to bring the enclosure 1 to thermal equilibrium, the resistors being at 1,200 ° C at least, and the body 10 reaching a temperature of 400 to 600 ° C. During the temperature rise, the basket is rotated, at a speed of approximately 1 rpm, to regulate the temperature and, consequently, to reach the operating conditions more quickly.
  • the liquid waste is gradually introduced through the injection rod 18.
  • the liquid vaporizes almost immediately, and the vapors are brought gradually to the average temperature of the enclosure as they move from the rod 18 to the bottom 12.
  • This rise in temperature is accompanied by cracking, giving rise on the one hand to light products (hydrogen, methane, etc.) which are evacuated by the pumping unit, and on the other hand to products with high molecular weight with slower displacement, the cracking of which continues until the formation essentially of carbon black.
  • the incondensables which remain for a very short time in the enclosure 1, are found at the outlet of the liquid ring pump 41, to be either recovered for use or burnt in a flare.
  • the light condensates, intercepted by the condenser 2 are separated from the water in the separator 3 and will either be recovered or recycled in the oven.
  • the solid residues are stirred by the basket 13.
  • the cracked residues which have not been entirely decomposed at the temperature of the enclosure are also stirred by the basket 13. Although these residues are on the whole of fine particle size, they are distributed throughout the of the volume of the enclosure, their movements not being slowed down by the gaseous phase, the pressure of which is low. These residues can therefore reach near the resistors 15, and are then subjected directly to their radiation. This radiation is close to that of a black body at this temperature, with a continuous spectrum which extends from yellow to infrared.
  • the residues which are not completely decomposed selectively absorb the spectrum components capable of breaking the residual bonds, so that the cracking is completed.
  • the enclosure could be arranged with its vertical axis, the resistors then being arranged in a cage regularly spaced near the wall.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
EP93870115A 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen Expired - Lifetime EP0630957B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP93870115A EP0630957B1 (de) 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen
DE69320946T DE69320946T2 (de) 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen
AT93870115T ATE170906T1 (de) 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur vorrichtung von industriellen organischen abfällen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93870115A EP0630957B1 (de) 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen

Publications (2)

Publication Number Publication Date
EP0630957A1 true EP0630957A1 (de) 1994-12-28
EP0630957B1 EP0630957B1 (de) 1998-09-09

Family

ID=8215357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93870115A Expired - Lifetime EP0630957B1 (de) 1993-06-23 1993-06-23 Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen

Country Status (3)

Country Link
EP (1) EP0630957B1 (de)
AT (1) ATE170906T1 (de)
DE (1) DE69320946T2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745819A1 (fr) * 1996-03-11 1997-09-12 Seit Installation de traitement thermique de dechets industriels, hospitaliers, menagers et assimilables avec protection de l'environnement au-dela des normes fixees
WO1998014531A1 (en) * 1996-10-03 1998-04-09 Carbonium Corporation Scrap pyrolysis system and reactor
EP0851019A2 (de) * 1996-12-23 1998-07-01 Richard Bouziane Pyrolysevorrichtung
FR2830536A1 (fr) * 2001-10-04 2003-04-11 Remy Gourhan Procede et dispositif pour traiter par pyrolyse des dechets fluides
US9127207B2 (en) 2009-07-14 2015-09-08 Process Limited Pyrolyser
FR3098521A1 (fr) 2019-07-10 2021-01-15 Rémy GOURHAN Dispositif pour la destruction des déchets industriels spéciaux ou toxiques par pyrolyse et sa mise en œuvre.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561800A (en) * 1976-10-05 1980-03-05 Storrs K L Process and apparatus for separating and recoveringliquid roducts from solid an liquid substance
US4402791A (en) * 1981-08-10 1983-09-06 Brewer John C Apparatus for pyrolyzing shredded tires
EP0324668A1 (de) * 1988-01-11 1989-07-19 Synthese Internationale Holding, S.A. Einrichtung zur Umwandlung von Abfällen
FR2685449A1 (fr) * 1991-12-23 1993-06-25 Soteco Four de pyrolyse sous basse pression pour la destruction de dechets organiques industriels.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561800A (en) * 1976-10-05 1980-03-05 Storrs K L Process and apparatus for separating and recoveringliquid roducts from solid an liquid substance
US4402791A (en) * 1981-08-10 1983-09-06 Brewer John C Apparatus for pyrolyzing shredded tires
EP0324668A1 (de) * 1988-01-11 1989-07-19 Synthese Internationale Holding, S.A. Einrichtung zur Umwandlung von Abfällen
FR2685449A1 (fr) * 1991-12-23 1993-06-25 Soteco Four de pyrolyse sous basse pression pour la destruction de dechets organiques industriels.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745819A1 (fr) * 1996-03-11 1997-09-12 Seit Installation de traitement thermique de dechets industriels, hospitaliers, menagers et assimilables avec protection de l'environnement au-dela des normes fixees
EP0795594A1 (de) * 1996-03-11 1997-09-17 Seit (Eurl) Anlage zur umweltfreundlichen Wärmebehandlung von Gewerbe-, Krankenhaus-, Haushalts- und dergleichen Abfällen
WO1998014531A1 (en) * 1996-10-03 1998-04-09 Carbonium Corporation Scrap pyrolysis system and reactor
EP0851019A2 (de) * 1996-12-23 1998-07-01 Richard Bouziane Pyrolysevorrichtung
EP0851019A3 (de) * 1996-12-23 1998-09-09 Richard Bouziane Pyrolysevorrichtung
FR2830536A1 (fr) * 2001-10-04 2003-04-11 Remy Gourhan Procede et dispositif pour traiter par pyrolyse des dechets fluides
US9127207B2 (en) 2009-07-14 2015-09-08 Process Limited Pyrolyser
FR3098521A1 (fr) 2019-07-10 2021-01-15 Rémy GOURHAN Dispositif pour la destruction des déchets industriels spéciaux ou toxiques par pyrolyse et sa mise en œuvre.

Also Published As

Publication number Publication date
ATE170906T1 (de) 1998-09-15
DE69320946D1 (de) 1998-10-15
DE69320946T2 (de) 1999-05-27
EP0630957B1 (de) 1998-09-09

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