EP0598639B1 - Verfahren zur thermischen Behandlung einer Abfallflüssigkeit mit organischen Schadstoffen oder einer anorganischen Verbindung - Google Patents

Verfahren zur thermischen Behandlung einer Abfallflüssigkeit mit organischen Schadstoffen oder einer anorganischen Verbindung Download PDF

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Publication number
EP0598639B1
EP0598639B1 EP93402657A EP93402657A EP0598639B1 EP 0598639 B1 EP0598639 B1 EP 0598639B1 EP 93402657 A EP93402657 A EP 93402657A EP 93402657 A EP93402657 A EP 93402657A EP 0598639 B1 EP0598639 B1 EP 0598639B1
Authority
EP
European Patent Office
Prior art keywords
effluent
zone
process according
symmetry
fluid
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.)
Expired - Lifetime
Application number
EP93402657A
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English (en)
French (fr)
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EP0598639A1 (de
Inventor
Jean-Louis Lescuyer
François Paquet
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.)
Rhodia Chimie SAS
Original Assignee
Rhone Poulenc Chimie 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 Rhone Poulenc Chimie SA filed Critical Rhone Poulenc Chimie SA
Publication of EP0598639A1 publication Critical patent/EP0598639A1/de
Application granted granted Critical
Publication of EP0598639B1 publication Critical patent/EP0598639B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/32—Incineration of waste; Incinerator constructions; Details, accessories or control therefor the waste being subjected to a whirling movement, e.g. cyclonic incinerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08—Disposition of burners
    • F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/008—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/80—Quenching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S588/00—Hazardous or toxic waste destruction or containment
    • Y10S588/90—Apparatus

Definitions

  • the present invention relates to a method for treating an effluent comprising polluting organic materials and / or an inorganic compound with a view to recovering a clean effluent free of these organic materials or recyclable.
  • the invention is particularly applicable to the treatment of methionine manufacturing effluents.
  • the method according to the invention for treating an effluent comprising organic materials or an inorganic compound or a mixture thereof is of the type in which a first oxidizing fluid and a fluid are introduced into a first zone.
  • fuel whereby a combustion phase is carried out, at least one of said fluids being introduced along a helical path; said combustion phase is then forced into a second zone, through a restricted passage, whereby it is given a well-vortex flow having an axis of symmetry; said effluent is introduced into the zone of axial symmetry of said well-vortex flow; this process is characterized in that a second additional oxidizing fluid is also introduced into said zone of axial symmetry.
  • the method of the invention makes it possible to achieve destruction yields clearly greater than 98%, for example at least 99% and even at least 99.9%.
  • the process of the invention can be used for any type of liquid or gaseous effluent. It is particularly suitable for liquid effluents.
  • the process of the invention is also particularly suitable for the case of effluents comprising an inorganic compound whose recovery or recycling is advantageous.
  • effluents comprising a sulphate, in particular an alkali sulphate such as sodium sulphate or also residual sulfuric acids.
  • process of the invention can be used very particularly for effluents comprising both organic materials and inorganic compounds.
  • the process of the invention can thus be used for the treatment of effluents from the manufacture of amino acids comprising sulfur.
  • a particular example is the treatment of effluents from the production of methionine and in particular of the mother liquors of the crystallization of the latter.
  • the effluent to be treated comprises, in addition to sodium sulphate, numerous organic impurities such as compounds for the degradation of methionine with one or more sulfur atoms.
  • the gases from the combustion treatments of the type described above contain a large amount of sulfur products.
  • effluents capable of being treated advantageously by the process of the invention, mention may be made of those resulting from the manufacture of certain esters with sulfuric catalysis such as ethyl phthalate or also the mother liquors of crystallization in the preparation. itaconic acid.
  • the first step in the process is to produce a combustion phase under specific conditions. To do this, a first oxidizing fluid and a combustible fluid are introduced into a first zone.
  • the first oxidizing fluid is air possibly enriched with oxygen.
  • the combustible fluid can be a gas such as methane or propane or a light hydrocarbon for example. Natural gas is usually used.
  • At least one of these two fluids is introduced into the aforementioned zone along a helical path.
  • This fluid is introduced with a slight overpressure relative to the pressure prevailing downstream in the second zone.
  • This overpressure is generally at most 1 bar and preferably between 0.2 and 0.5 bar.
  • the ignition of the fuel and of the oxidizer is caused and in the first aforementioned zone there is obtained a combustion phase which is itself animated by a movement along a helical trajectory.
  • This phase is then brought into a second zone via a restricted passage so as to give it a well-vortex movement.
  • This well-vortex movement in fact corresponds to a movement of gases along a set of trajectories confused with families of generators of a hyperboloid. These generators rest on a family of circles located near and below the reduced passage, before diverging in all directions in the second zone.
  • zone of axial symmetry is understood here and hereinafter to mean the zone extending in the vicinity of the axis of symmetry of the abovementioned trajectory.
  • the effluent to be treated is introduced into the zone of axial symmetry of the well-vortex movement. Preferably this introduction is done axially.
  • the place of introduction is located in the immediate vicinity of the restricted passage, upstream thereof or at the same level of said passage.
  • a second oxidizing fluid is also introduced into the above-mentioned axial zone. What has just been said about the place of introduction of the effluent also applies to the second oxidizing fluid. More preferably, this introduction takes place axially.
  • the effluent and the second oxidant are introduced coaxially.
  • pure oxygen is usually used. It is nevertheless possible to envisage the use of oxygen-inert gas mixtures.
  • the effluent is introduced at a low initial speed, preferably less than 10 m / s and more particularly at 5 m / s so as not to have to excessively increase the initial momentum of the combustion phase, the ratio of the amounts of movement of these two elements being at least equal to 100, preferably between 1,000 and 10,000.
  • the contacting of the vaporized effluent and of the second oxidizing fluid will cause in the second zone, the combustion or the degradation of the organic impurities as well as a heat treatment of the inorganic compounds such as drying, melting, thermal decomposition etc.
  • a second essentially gaseous phase is obtained, but which may comprise a liquid and / or a solid, which is treated in a manner known per se to recover the recoverable compounds and ensure compliance with discharge standards .
  • This second phase can thus be subjected to quenching. It can also be cooled so that the solids can be recovered on the filter.
  • the gases can be treated by spraying with any liquid suitable for eliminating annoying impurities or combustion products before rejection, for example to absorb sulfur species such as SO 2 .
  • FIG. 1 shows a burner 1 comprising a combustion chamber 2.
  • This combustion chamber consists of an outer cylinder 3 and an inner cylinder 4 coaxial thus defining a central area and an annular peripheral area 5 having perforations 6 distributed over several circles spaced axially.
  • the upper part of the chamber 2 also includes an inlet 7 for the introduction of the combustible fluid.
  • the combustion chamber 2 is further provided in its axial upper part with a liquid or gas inlet 8 constituted here by two coaxial tubes 9 and 10 surrounded by an insulating lining and serving respectively for the introduction of the effluent to be treated and the second oxidizing fluid.
  • a liquid or gas inlet 8 constituted here by two coaxial tubes 9 and 10 surrounded by an insulating lining and serving respectively for the introduction of the effluent to be treated and the second oxidizing fluid.
  • the chamber 2 ends downstream by a convergent 11 defining a neck 12 allowing passage into a second zone 13. It will be noted here that in the embodiment shown the inlet 8 opens just at the neck 12 and is located on the 'axis of symmetry of it.
  • the operation of the burner described above is as follows.
  • the first oxidizing fluid is introduced through an orifice, not shown, made in the annular zone, it enters zone 2 through the perforations 6 and then follows the helical trajectory shown in FIG. 1. It mixes with the fuel and the assembly is ignited by any known means, for example by a candle between the electrodes from which a spark bursts.
  • the effluent is introduced at 9 and it meets the combustible phase substantially at the level of the neck 12 where it is then fractionated into a multitude of drops, each of them being transported by a volume of the gaseous combustion phase.
  • FIG. 2 illustrates the whole of an installation implementing the method of the invention.
  • This assembly includes a burner of the same type as that described above, the element 14 representing the oxidizer inlet pipe.
  • the second zone 13 Downstream of the burner 1, the second zone 13 consists of an oven 15 with a refractory wall.
  • This oven is itself extended by a quenching device 16 which can for example be a water device such as a spray ring.
  • the installation further comprises a tank 17 ensuring the reception and separation of the liquid and the gases. These leave the installation through the chimney 18 which is equipped with a sprinkling device 19.
  • the effluent is collected by a purge 20. It can be partly recycled through the pipe 21 to the quenching device 16 and / or when spraying gas.
  • a pipe 22 is provided to add water to the installation.
  • An effluent consisting of the mother liquors of crystallization of methionine is introduced by 9, the composition by weight of which is as follows: sodium sulfate (Na2SO4): 18-22%; methionine: 2-2.5%; organic products: 5-15%; the tests being carried out on lots of total organic carbon (TOC) content of 45 to 80 g / l.
  • Air boosted to 0.5 bar is supplied by 14, methane by 7 and oxygen by 10. The rates are as follows: Air Methane Oxygen Effluent Debit 695 Kg / h 2.23 Kmole / h 42 Nm 3 / h 210 Kg / h
  • the temperature at the base of the quenching device 16 is 88 ° C, that at the bottom of the oven 13 is 1100 ° C, which by calculation gives a temperature at neck 12 of 1400 ° C. and a methane flame temperature at the bottom of the burner of 1680 ° C. taking into account the thermal losses of the installation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Treating Waste Gases (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Treatment Of Sludge (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Chimneys And Flues (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Glass Compositions (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Liquid Carbonaceous Fuels (AREA)

Claims (10)

  1. Verfahren zur Behandlung eines Abstromes enthaltend organische Stoffe oder eine anorganische Verbindung oder auch eine Mischung dieser Stoffe, wobei das Verfahren von derjenigen Art ist, bei der man in eine erste Zone ein erstes eine Verbrennung bewirkendes Fluid und ein brennbares Fluid einleitet, wodurch man eine Verbrennungsphase realisiert, wobei mindestens eines der Fluide in einer schraubenförmigen Bahn eingeleitet wird, und bei der man anschließend die Verbrennungsphase durch einen Engpaß in eine zweite Zone zwingt, wodurch man ihr eine schachtförmige Wirbelströmung mit einer Symmetrieachse verleiht, und bei der man den Abstrom in eine axiale Symmetriezone der schachtförmigen Wirbelströmung einleitet,
    dadurch gekennzeichnet, daß man des weiteren ein zweites eine Verbrennung bewirkendes Hilfsfluid in die axiale Symmetriezone einleitet.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß zumindest der Abstrom und das zweite Fluid axial in die genannte Symmetriezone eingeleitet werden.
  3. Verfahren nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß der Abstrom und das zweite Fluid koaxial in die Symmetriezone eingeleitet werden.
  4. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man einen Abstrom behandelt, der als anorganische Verbindung ein Salz wie etwa ein Sulfat enthält, insbesondere ein Natriumsulfat.
  5. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man als Abstrom eine Restschwefelsäure behandelt.
  6. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man einen Abstrom behandelt, der schwefelhaltige organische Substanzen enthält.
  7. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man einen Abstrom behandelt, der aus der Herstellung von Methionin stammt, insbesondere die Mutterlaugen der Methioninkristallisation.
  8. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß das Verhältnis der Bewegungsgröße der Verbrennungsphase zur Bewegungsgröße des Abstromes wenigstens gleich 100, vorzugsweise zwischen 1.000 und 10.000 ist.
  9. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man am Ausgang der zweiten Zone die in dieser zweiten Zone erhaltene zweite Phase einer Abschreckung unterzieht.
  10. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß man als zweites eine Verbrennung bewirkendes Fluid Sauerstoff verwendet.
EP93402657A 1992-11-16 1993-10-29 Verfahren zur thermischen Behandlung einer Abfallflüssigkeit mit organischen Schadstoffen oder einer anorganischen Verbindung Expired - Lifetime EP0598639B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9213734 1992-11-16
FR9213734A FR2698156B1 (fr) 1992-11-16 1992-11-16 Procédé de traitement thermique d'un effluent comprenant des matières organiques polluantes ou un composé inorganique.

Publications (2)

Publication Number Publication Date
EP0598639A1 EP0598639A1 (de) 1994-05-25
EP0598639B1 true EP0598639B1 (de) 1997-05-28

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EP93402657A Expired - Lifetime EP0598639B1 (de) 1992-11-16 1993-10-29 Verfahren zur thermischen Behandlung einer Abfallflüssigkeit mit organischen Schadstoffen oder einer anorganischen Verbindung

Country Status (14)

Country Link
US (1) US5817909A (de)
EP (1) EP0598639B1 (de)
JP (1) JP2819232B2 (de)
KR (1) KR100189785B1 (de)
AT (1) ATE153748T1 (de)
BR (1) BR9304690A (de)
CA (1) CA2103083C (de)
DE (1) DE69311069T2 (de)
DK (1) DK0598639T3 (de)
ES (1) ES2105175T3 (de)
FI (1) FI108161B (de)
FR (1) FR2698156B1 (de)
GR (1) GR3024089T3 (de)
NO (1) NO302972B1 (de)

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DE19510874A1 (de) * 1995-03-24 1996-09-26 Gruenzweig & Hartmann Verfahren und Vorrichtung zum Erschmelzen von silikatischen Recycling-Rohstoffen
DE19640198A1 (de) * 1996-09-30 1998-04-02 Abb Research Ltd Vormischbrenner
US6689334B1 (en) * 1996-12-07 2004-02-10 Degussa Ag Process for reducing or avoiding foam production during chemical and physical materials conversion processes
DE19736902A1 (de) * 1997-08-25 1999-03-04 Abb Research Ltd Brenner für einen Wärmeerzeuger
DE19840889B4 (de) 1998-09-09 2006-02-16 Wegu Gummi- Und Kunststoffwerke Gmbh & Co. Kg Elastisches Lager
US6450108B2 (en) * 2000-03-24 2002-09-17 Praxair Technology, Inc. Fuel and waste fluid combustion system
EP1255077B1 (de) * 2001-04-30 2008-06-11 ALSTOM Technology Ltd Vorrichtung zum Verbrennen eines gasförmigen Brennstoff-Oxidator-Gemischs
FR2935041B1 (fr) 2008-08-13 2010-09-10 Vichem Procede et dispositif de traitement thermique d'au moins un effluent comportant des polluants combustibles
FR2956723B1 (fr) * 2010-02-19 2012-06-01 Vichem Procede et installation pour refroidir des fumees de combustion et/ou des gaz chauds.
EP2468383A1 (de) 2010-12-22 2012-06-27 Evonik Degussa GmbH Verfahren zur thermischen Nachverbrennung von Abgasen aus der Acrolein- und aus der Blausäureherstellung

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JPS5123945B2 (de) * 1972-03-29 1976-07-20
FR2257326B1 (de) * 1973-06-19 1976-05-28 Rhone Progil
NL7704481A (nl) * 1977-04-25 1977-08-31 Stamicarbon Werkwijze voor het winnen van ammoniak en zwavel- dioxide uit verontreinigd ammoniumzout van zwavel- zuur.
USRE30455E (en) * 1978-04-25 1980-12-23 Phillips Petroleum Company Apparatus for making carbon black
FR2431321A1 (fr) * 1978-07-21 1980-02-15 Rhone Poulenc Ind Procede de traitement de substances se presentant sous des phases differentes, tel que traitement de substances sous forme liquide, semi-liquide, ou pateuse, par une autre phase notamment gazeuse
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FR2484609A1 (fr) * 1980-06-13 1981-12-18 Rhone Poulenc Ind Procede de traitement d'effluents aqueux contenant des substances organiques et des sels mineraux
JPS5827981A (ja) * 1981-08-12 1983-02-18 Furukawa Electric Co Ltd:The 真空メツキ装置
JPS59108057U (ja) * 1982-12-29 1984-07-20 三菱重工業株式会社 含じんガス冷却装置
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JPH04309710A (ja) * 1991-04-09 1992-11-02 Kubota Corp ガス冷却室

Also Published As

Publication number Publication date
DK0598639T3 (da) 1997-12-22
FI935048A0 (fi) 1993-11-15
DE69311069D1 (de) 1997-07-03
JP2819232B2 (ja) 1998-10-30
FR2698156A1 (fr) 1994-05-20
JPH06213409A (ja) 1994-08-02
GR3024089T3 (en) 1997-10-31
ATE153748T1 (de) 1997-06-15
NO934116L (no) 1994-05-18
KR100189785B1 (ko) 1999-06-01
FR2698156B1 (fr) 1995-01-27
BR9304690A (pt) 1994-11-08
NO934116D0 (no) 1993-11-15
CA2103083C (fr) 2000-11-14
CA2103083A1 (fr) 1994-05-17
EP0598639A1 (de) 1994-05-25
FI935048A7 (fi) 1994-05-17
FI108161B (fi) 2001-11-30
KR940011040A (ko) 1994-06-20
US5817909A (en) 1998-10-06
ES2105175T3 (es) 1997-10-16
NO302972B1 (no) 1998-05-11
DE69311069T2 (de) 1997-12-11

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