EP0480784A2 - Verfahren zur thermischen Behandlung in einem Fliessbett und Verwendung zur Reinigung von Metallgegenstände - Google Patents

Verfahren zur thermischen Behandlung in einem Fliessbett und Verwendung zur Reinigung von Metallgegenstände Download PDF

Info

Publication number
EP0480784A2
EP0480784A2 EP91402437A EP91402437A EP0480784A2 EP 0480784 A2 EP0480784 A2 EP 0480784A2 EP 91402437 A EP91402437 A EP 91402437A EP 91402437 A EP91402437 A EP 91402437A EP 0480784 A2 EP0480784 A2 EP 0480784A2
Authority
EP
European Patent Office
Prior art keywords
post
fluidized bed
combustion
gaseous effluents
heat exchanger
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
EP91402437A
Other languages
English (en)
French (fr)
Other versions
EP0480784A3 (en
EP0480784B1 (de
Inventor
Hervé Yves Hellio
Guy Jacq
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.)
Electricite de France SA
Original Assignee
Electricite de France 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 Electricite de France SA filed Critical Electricite de France SA
Publication of EP0480784A2 publication Critical patent/EP0480784A2/de
Publication of EP0480784A3 publication Critical patent/EP0480784A3/fr
Application granted granted Critical
Publication of EP0480784B1 publication Critical patent/EP0480784B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents

Definitions

  • the field of the invention is that of heat treatments in a fluidized and heated bed.
  • the invention is particularly applicable to the pickling of metal parts at high temperature, releasing gaseous effluents charged with volatile organic compounds, which it is generally necessary to destroy before discharging into the atmosphere.
  • the invention also relates to an installation using this method.
  • the actual cleaning element of the furnace consists of a fluidized hot bath of powdered alumina, into which the metal parts to be cleaned are immersed.
  • the alumina transmits to the parts the heat generated by the heating means, the high temperature and the oxygen in the air oxidize the deposits then evacuated in gaseous form.
  • the residual gases from this operation are either evacuated directly or led into a post-combustion oven, which avoids any pollution of the outside ambient air. Indeed, the current regulations impose significant reductions in emissions of polluting volatile organic compounds. To this end, the residual gases or gaseous effluents are incinerated at high temperature by post-combustion. The energy required for this treatment is partly obtained from the product itself, the additional energy being gas or electricity.
  • the post-combustion chamber is placed in the fluidized bed to transmit part of the energy from the post-combustion of the gaseous effluents to the fluidized bed.
  • this post-combustion is obtained by passing the gaseous effluents over electrical resistances placed in the post-combustion enclosure.
  • the hot gases from post-combustion are used to preheat the gaseous effluents to be incinerated by means of a high heat exchanger. temperature, and to preheat the fluidizing air of the fluidized bed using a low temperature heat exchanger.
  • the high temperature heat exchanger can be located in the fluidized bed, at the entry and exit of the post-combustion chamber.
  • the post-combustion can be regulated in different ways. One is to adjust the fluidization rate of the fluidized bed. A second consists in regulating the electric power brought into play in the post-combustion chamber.
  • a second main object of the invention is an installation for implementing the process which has just been summarized and which comprises a muffle inside which the fluidized bed is located and means for supporting the parts to be stripped.
  • the installation can be completed with a second low temperature heat exchanger, connected on the one hand to an outlet of the first high temperature heat exchanger, to recover part of the calories from post-combustion and connected on the other hand , at a fluidizing air inlet and at an inlet of the fluidized bed to preheat the fluidizing air.
  • thermal treatment methods and installations using a fluidized bed have means for heating this fluidized bed.
  • These heating means are often substantial and require a significant supply of energy to deliver the quantity of heat necessary for heating the fluidized bed to its operating temperature. This can be the case in the printing industry and for metallic degreasing.
  • a second object of the invention is to allow the implementation of these methods by reducing as much as possible the dimensions and the size of the heating means of the fluidized bed, and by reducing, as previously, the input energy necessary for the operation of facilities.
  • a third object of the invention is a heat treatment process in a heated fluidized bed, using a gas at a first determined temperature, releasing said transformed gas by its passage through the fluidized bed at a second determined temperature above the first temperature determined.
  • the gas released at the second temperature is reused to transmit part of its heat energy to the fluidized bed, via a heat exchanger placed inside the fluidized bed.
  • An application of the latter method is provided for the destruction of volatile organic compounds, the gas being charged at the entry of volatile organic compounds, the fluidized bed being a catalyst or containing active products for purifying the volatile organic compounds by adsorption, gas being air at the outlet of the fluidized bed.
  • a purification of the gases discharged to the atmosphere can be carried out by adapting the PH of the fluidized bed.
  • the installation according to the invention shown in FIG. 1, is an installation for the thermal pickling of metal parts covered with organic products.
  • This use of the method according to the invention for thermal pickling is an embodiment of the invention.
  • the latter can also be used for outright destruction of volatile organic compounds in the printing industry and for metallic degreasing.
  • the general principle of the invention will be described with reference to this figure 1.
  • the heat treatment operation is carried out on the left of this FIG. 1, inside a refractory enclosure, marked 2 and called a muffle.
  • the parts to be treated are placed inside thereof by means of a basket 4 which can be suspended from the cover 5 of the muffle 2.
  • This basket is immersed in a fluidized bed 10 occupying most of the interior of the muffle 2.
  • the fluid state of the fluidized bed 10 is maintained by means of a gas stream, the inlet 6 of which is at the bottom of the muffle 2 and the outlet of which is located in the top of the muffle 2, in this case on the cover 5.
  • Pickling is obtained by the fact that the fluidized bed 10 is heated. Indeed, the gases, and more precisely the air, arrive at the inlet 6, heated to a first determined temperature T1. By an upward movement, they then pass through the fluidized bed 10 and thereby all the parts contained in the basket 4.
  • the muffle 2 comprising heating means, in this case electrical resistors 12 placed at the inside of it, the gases from inlet 6 heat up. They thus convey through the fluidized bed 10 the calories provided by the heating means 12 and partially transmit these calories to the parts held in the basket 4. The rise in temperature causes these parts to have a physicochemical reaction promoting their pickling.
  • the gases having passed through the fluidized bed 10 and the parts escape from the muffle 2 through the outlet 8 at a second determined temperature T2 higher than the first temperature T1.
  • the gas to be blown at the inlet 6 is preferably air, in the case of thermal pickling. At the outlet 8, the gas, having contributed to the pickling of the parts, carries gaseous effluents, that is to say volatile
  • the thermal energy is supplied to the fluidized bed 10 by the heating means, in this case electrical resistors.
  • the gas released at the outlet 8 is reused to transmit part of its heat energy to the fluidized bed 10.
  • a heat exchanger 14 is used. This receives the gaseous effluents at a third temperature T3, coming from exit 8 via a first pipe 16 of the gaseous effluents. It is placed inside the muffle 2 to restore part of its heat energy to the fluidized bed 10.
  • the gaseous effluents therefore enter this high temperature heat exchanger at a third determined temperature T3, slightly lower than the second temperature T2, following the slight heat losses due to the transport of the gaseous effluents by the first pipe 16 of the gaseous effluents. In the case of FIG. 1, this restitution is done indirectly.
  • FIG. 1 represents the application of the method according to the invention to a thermal pickling installation.
  • the regulations in force impose the incineration of volatile organic compounds. Consequently, a treatment of these volatile organic compounds is used by post-combustion.
  • This operation consists of reheat these gaseous effluents to a high temperature.
  • electrical resistors it is possible to use electrical resistors.
  • a post-combustion chamber 20 receives the gaseous effluents from the outlet 8 to subject them, by means of high temperature electrical resistors 18, to high temperature heating T5 of the order 800 ° C. Gaseous effluents are usually discharged to the atmosphere.
  • a characteristic of the invention therefore consists in placing the post-combustion chamber 20, and / or the high-temperature heat exchanger 14, inside the fluidized bed 10. Therefore, it is possible to use the heat energy of the gaseous effluents, heated to the fifth temperature T5, to partially heat the fluidized bed 10.
  • the post-combustion chamber has a thermal envelope 22 surrounding it, and possibly the high heat exchanger temperature 14, except at the end of the gaseous effluent path inside it and in the second chamber of the high temperature heat exchanger 14, so as to promote a heat exchange between the interior of the post-combustion chamber 20 and the fluidized bed 10.
  • the large temperature difference between the post-combustion temperature T5 and the temperature T3 at the outlet of the first pipe 16 of the gaseous effluents is significant; it is for this reason that the high temperature heat exchanger 14 is used to preheat the gaseous effluents using the same effluents which have undergone post-combustion.
  • the heat exchanger alone and directly ensures the return to the fluidized bed of part of the energy of the gases from the outlet 8 These having entered at temperature T3 therefore come out at a temperature T4 lower than temperature T3.
  • the high temperature heat exchanger 14 and the post-combustion chamber 20 have been shown juxtaposed.
  • Figure 2 details further an assembly grouping these two devices.
  • the temperature T6 at the outlet of the muffle 2 can be of the order of 300 ° C. It is therefore understood that a large part of the heat energy supplied to the gaseous effluents during the post-combustion is returned to the fluidized bed 10. This restitution takes place directly by a part of the post-combustion chamber 20 free of l 'thermal envelope 22 and indirectly via the high temperature heat exchanger 14 which recovers part of the post-combustion heat energy to preheat the gaseous effluents before this same post-combustion.
  • the high-temperature heat exchanger 14 can be omitted .
  • the gases are circulated in the fluidized bed 10 using, upstream of the inlet 6, a booster 26 and an exhaust 28 placed downstream of the second gaseous effluent pipe 24, at the outlet of the muffle 2.
  • the outlet temperature T6 of the muffle 2, in the case of thermal pickling can be of the order of 300 °. It is then possible to use a second heat exchanger 30, operating at low temperature, to preheat the air, or generally the gas used to feed the fluidized bed 10. In fact, the ambient air used for thermal pickling is collected at a temperature of the order of 20 ° C. It may possibly undergo a slight rise in temperature in the booster 26 to reach a temperature of 50 ° C. It is then possible to recover part of the heat energy from the gaseous effluents flowing in their second pipe 24 at a temperature slightly below T3 (300 ° C) to preheat this air intended for fluidization. This air can thus be heated to a seventh temperature T7 which can reach 200 ° C.
  • the treated gaseous effluents can drop to an eighth temperature T8 of the order of 150 ° C.
  • a regulation of the circulating gases is necessary in order to obtain a thermal operating equilibrium between the pickling role filled by the fluidized bed 10 and the post-combustion of the gaseous effluents.
  • the regulation of such an installation can be done by acting on the flow rate of the fluidizing gas by acting on the booster 26 and the enhancer 28.
  • a return valve 32 can be connected upstream of the booster 26 and downstream of the enhancer 28 to reinject part of the treated effluents into the fluidized bed.
  • the purification of gases discharged to the atmosphere can also be modified by adapting the pH, that is to say the hydrogen potential, of the fluidized bed 10.
  • the high temperature heat exchanger 14 and the post-combustion chamber 20 are combined in a single assembly or device which is placed in the middle of the fluidized bed 10.
  • the gaseous effluents are introduced into this device by means of the first pipe 16 which is preferably covered with a heat-insulating sheath 36. They enter an inlet chamber 38 of the high-temperature heat exchanger 14. By means of a partition 42, they receive part of the heat energy supplied to them by post-combustion. Their progress continues in a post-combustion chamber 44 where a sufficient number of electrical resistors 18 is placed to bring them to the post-combustion temperature T5 which is of the order of 800 ° C.
  • the effluents continue their journey towards a temperature maintenance chamber 46 where they stay for at least one second.
  • This maintenance at temperature T5 has the function of ensuring the complete post-combustion of the gaseous effluents.
  • the outlet chamber 40 of the high temperature heat exchanger 14 succeeds this holding chamber 46. It is located opposite the inlet chamber 38 of this exchanger, on the other side of the wall 42.
  • the difference between inlet temperatures T3 (300 ° C) and outlet T5 (800 ° C) being of the order of several hundred degrees, a significant heat exchange takes place through the partition 42.
  • a heat-insulating enclosure 22 is placed around the post-combustion enclosure 20 and around the high temperature heat exchanger 14, so that the energy provided by the electrical resistors 18 is entirely used for the post-combustion of gaseous effluents.
  • the latter are discharged to the low temperature exchanger, not shown in this figure, by means of the second gaseous effluent pipe 24, also surrounded by a heat-insulating sheath 36.
  • the effluents are then dropped to the temperature T6 which is l 'around 300 ° C.
  • FIG. 3 partially describes the installation according to the invention in a version intended for the outright destruction of volatile organic compounds.
  • a muffle 2 containing a fluidized bed 50.
  • the gas entering at an inlet temperature T9 into the fluidized bed through the inlet 56 consists of the volatile organic compounds to be treated. These therefore cross the bed fluidized 50 which is heated by means of electrical resistors 62.
  • the fluidized bed 50 comprises active products, such as active carbon to fix certain elements contained in volatile organic compounds, such as chlorine.
  • the volatile compounds thus treated escape from the muffle 2 via the outlet 58 communicating with a pipe 54 surrounded by a heat-insulating sheath 60.
  • the effluents thus treated have therefore acquired an outlet temperature T10 higher than the inlet temperature T9.
  • these heated effluents are reinjected through the inlet 52 into the fluidized bed 50 by means of the pipe 54.
  • the latter supplemented by, or acting as a heat exchanger , no longer has a heat-insulating sheath.
  • its walls have good qualities of heat exchange with the fluidized bed 50. Part of the heat energy thus communicated to the organic compounds treated is therefore reused for maintaining the temperature of the fluidized bed 50.
  • This type of installation can be used in printing or as part of metallic degreasing.
  • the effluents thus treated are mainly composed of air and carbon dioxide.
  • the temperature of the fluidized bed does not exceed 400 ° C.
  • the high temperature heat exchanger can be of the ceramic type.
  • the low temperature heat exchanger can be of the tubular or plate type.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Incineration Of Waste (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP19910402437 1990-09-17 1991-09-13 Verfahren zur thermischen Behandlung in einem Fliessbett und Verwendung zur Reinigung von Metallgegenstände Expired - Lifetime EP0480784B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011449 1990-09-17
FR9011449A FR2666817B1 (fr) 1990-09-17 1990-09-17 Procedes de traitements thermiques en lit fluidise et application au decapage de pieces metalliques.

Publications (3)

Publication Number Publication Date
EP0480784A2 true EP0480784A2 (de) 1992-04-15
EP0480784A3 EP0480784A3 (en) 1992-06-03
EP0480784B1 EP0480784B1 (de) 1997-05-28

Family

ID=9400376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910402437 Expired - Lifetime EP0480784B1 (de) 1990-09-17 1991-09-13 Verfahren zur thermischen Behandlung in einem Fliessbett und Verwendung zur Reinigung von Metallgegenstände

Country Status (4)

Country Link
EP (1) EP0480784B1 (de)
DE (1) DE69126269T2 (de)
DK (1) DK0480784T3 (de)
FR (1) FR2666817B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504321U1 (de) * 1995-03-17 1995-05-04 VE Recycling GmbH, 28757 Bremen Trommeltrockner
WO1999049953A1 (de) * 1998-03-27 1999-10-07 Schwing Fluid Technik Ag Verfahren zur reinigung von durch polymerablagerungen verschmutzten apparate- und maschinenteilen aus metall oder keramik
EP1288284A1 (de) * 2000-06-01 2003-03-05 Asahi Kasei Kabushiki Kaisha Reinigungsmittel, reinigungsverfahren und reinigungsgerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372660A1 (fr) * 1976-12-03 1978-06-30 Procedyne Corp Procede de nettoyage de pieces dans un lit fluidise
FR2372905A1 (fr) * 1976-12-03 1978-06-30 Procedyne Corp Procede de nettoyage en lit fluidise a l'aide de matieres gazeuses ou solides de neutralisation
GB2046888A (en) * 1979-03-13 1980-11-19 Tolltreck Ltd Metal treatment
DE3517186A1 (de) * 1985-05-13 1986-11-13 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur thermischen reinigung mit schneidoelen verunreinigter leichtmetall-spaene
DE3805435A1 (de) * 1988-02-22 1989-08-31 Atzger Juergen Verfahren und vorrichtung zur thermischen reinigung von beschichteten werkstuecken

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1144661A (en) * 1965-12-02 1969-03-05 Coal Industry Patents Ltd Treatment of briquetted materials in fluidised beds
DE3335539C1 (de) * 1983-09-30 1984-12-13 Ewald 4133 Neukirchen-Vluyn Schwing Anlage fuer die Entlackung von metallischen und keramischen Gegenstaenden
DE3335537C1 (de) * 1983-09-30 1984-12-13 Ewald 4133 Neukirchen-Vluyn Schwing Anlage fuer die Entlackung von metallischen und keramischen Gegenstaenden
SU1440956A1 (ru) * 1987-05-25 1988-11-30 Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов Способ подготовки металлической стружки к плавке
DE3843158A1 (de) * 1988-12-22 1990-06-28 Felten & Guilleaume Energie Verfahren und vorrichtung zur reinigung und/oder entschichtung von halogenkohlenwasserstoffhaltigen rueckstaenden auf metallischen oberflaechen mittels umweltfreundlicher behandlungsmittel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372660A1 (fr) * 1976-12-03 1978-06-30 Procedyne Corp Procede de nettoyage de pieces dans un lit fluidise
FR2372905A1 (fr) * 1976-12-03 1978-06-30 Procedyne Corp Procede de nettoyage en lit fluidise a l'aide de matieres gazeuses ou solides de neutralisation
GB2046888A (en) * 1979-03-13 1980-11-19 Tolltreck Ltd Metal treatment
DE3517186A1 (de) * 1985-05-13 1986-11-13 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur thermischen reinigung mit schneidoelen verunreinigter leichtmetall-spaene
DE3805435A1 (de) * 1988-02-22 1989-08-31 Atzger Juergen Verfahren und vorrichtung zur thermischen reinigung von beschichteten werkstuecken

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504321U1 (de) * 1995-03-17 1995-05-04 VE Recycling GmbH, 28757 Bremen Trommeltrockner
WO1999049953A1 (de) * 1998-03-27 1999-10-07 Schwing Fluid Technik Ag Verfahren zur reinigung von durch polymerablagerungen verschmutzten apparate- und maschinenteilen aus metall oder keramik
EP1288284A1 (de) * 2000-06-01 2003-03-05 Asahi Kasei Kabushiki Kaisha Reinigungsmittel, reinigungsverfahren und reinigungsgerät
EP1288284A4 (de) * 2000-06-01 2004-11-24 Asahi Chemical Ind Reinigungsmittel, reinigungsverfahren und reinigungsgerät
KR100892199B1 (ko) * 2000-06-01 2009-04-07 아사히 가세이 가부시키가이샤 세정제, 세정 방법 및 세정 장치
US7531495B2 (en) 2000-06-01 2009-05-12 Asahi Kasei Kabushiki Kaisha Cleaning agent, cleaning method and cleaning apparatus
US8529703B2 (en) 2000-06-01 2013-09-10 Asahi Kasei Kabushiki Kaisha Cleaning agent, cleaning method and cleaning apparatus

Also Published As

Publication number Publication date
EP0480784A3 (en) 1992-06-03
DK0480784T3 (da) 1997-12-22
FR2666817A1 (fr) 1992-03-20
DE69126269D1 (de) 1997-07-03
EP0480784B1 (de) 1997-05-28
FR2666817B1 (fr) 1994-03-11
DE69126269T2 (de) 1997-12-18

Similar Documents

Publication Publication Date Title
JP2791985B2 (ja) 廃棄物熱処理設備並びにその設備の運転方法
FR2465159A1 (fr) Installation et procede d'incineration-chauffage
EP0332536A1 (de) Verfahren und Vorrichtung zum Regenerieren eines Katalysators in einem Fliessbett
FR2726070A1 (fr) Appareil de chauffage de fluide a bruleur de surface et a matrice poreuse
RU2227251C2 (ru) Способ и устройство для пиролиза и газификации отходов
EP0685550A1 (de) Verfahren und Vorrichtung zur Pyrolyse von Abfällen mit einer Vorwärmeinheit
EP0480784B1 (de) Verfahren zur thermischen Behandlung in einem Fliessbett und Verwendung zur Reinigung von Metallgegenstände
EP0553041A1 (de) Verfahren und Vorrichtung zur Pyrolyse von fluiden Effluenten
JP2012531571A (ja) 廃ガスに含まれたアンモニアを除去するためのガススクラバー
EP0512912B1 (de) Verfahren zur Herstellung von aromatischen Kohlenwasserstoffen in einem, von strahlenden Heizungsmitteln mit variabeler thermischer Leistung geheizten Gefäss
JP2004508529A (ja) 高温工程用の流動床ガスディストリビュータシステム
CA2741374A1 (fr) Procede d'adaptation a tout type d'oxydes, d'une installation a cycle thermochimique et installation pour la mise en oeuvre de ce procede
EP0485255A1 (de) Verfahren und Vorrichtung zur Herstellung von einem festen Brennstoff ausgehend von brennbaren Abfällen
FR2622958A1 (fr) Appareils de combustion compacts
FR2679009A1 (fr) Procede et dispositif de traitement de dechets par contact direct.
EP0430804B1 (de) Verfahren und Apparat für die Umwandlung von aromatischen Kohlenwasserstoffen aus aliphatischen Kohlenwasserstoffeinsätzen in einem mit fluidisierten Teilchen geheizten Reaktor
US5000425A (en) Method of preheating scrap
WO2011157913A1 (fr) Installation de production et de traitement de fumees
FR2511025A1 (fr) Procede de prechauffage ameliore de schistes huileux avant la pyrolyse
US4259910A (en) Electric controlled air incinerator for radioactive wastes
US20240096649A1 (en) Semiconductor process system and gas treatment method
FR2827609A1 (fr) Procede et installation de production de gaz combustibles a partir de gaz issus de la conversion thermique d'une charge solide
EP0009456A1 (de) Vorrichtung zum Wärmeaustausch zwischen festen Teilchen und einem Gasstrom
WO1992015395A1 (fr) Systeme et procede de regeneration a lit fluidise
FR2539216A1 (fr) Chaudiere comportant un ensemble de denitration

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE DK GB LI LU NL SE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE DK GB LI LU NL SE

17P Request for examination filed

Effective date: 19921107

17Q First examination report despatched

Effective date: 19930729

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JACQ, GUY

Inventor name: HELLIO, HERVE YVES

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE DK GB LI LU NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69126269

Country of ref document: DE

Date of ref document: 19970703

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970806

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030904

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030910

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20030915

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20030917

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030922

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030927

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030929

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20031208

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040913

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040913

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040914

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

BERE Be: lapsed

Owner name: *ELECTRICITE DE FRANCE SERVICE NATIONAL

Effective date: 20040930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050401

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050401

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040913

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050401

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

BERE Be: lapsed

Owner name: *ELECTRICITE DE FRANCE SERVICE NATIONAL

Effective date: 20040930