EP0090148A2 - Procédé et appareil pour la destruction thermique des substances organiques et minérales - Google Patents

Procédé et appareil pour la destruction thermique des substances organiques et minérales Download PDF

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Publication number
EP0090148A2
EP0090148A2 EP83101052A EP83101052A EP0090148A2 EP 0090148 A2 EP0090148 A2 EP 0090148A2 EP 83101052 A EP83101052 A EP 83101052A EP 83101052 A EP83101052 A EP 83101052A EP 0090148 A2 EP0090148 A2 EP 0090148A2
Authority
EP
European Patent Office
Prior art keywords
reactor
packing
coils
wall
support arms
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
EP83101052A
Other languages
German (de)
English (en)
Other versions
EP0090148B1 (fr
EP0090148A3 (en
Inventor
Heinrich Dipl.-Ing. Bastian
Hans Dr. Dipl. Chem. Huschka
Gerhard Dr. Dipl. Chem. Kemmler
Elmar Dr. Dipl.-Ing. Schlich
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.)
Nukem GmbH
Original Assignee
Nukem 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 Nukem GmbH filed Critical Nukem GmbH
Publication of EP0090148A2 publication Critical patent/EP0090148A2/fr
Publication of EP0090148A3 publication Critical patent/EP0090148A3/de
Application granted granted Critical
Publication of EP0090148B1 publication Critical patent/EP0090148B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/14—Processing by incineration; by calcination, e.g. desiccation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1142—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections of the corkscrew type
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/32—Processing by incineration

Definitions

  • the invention relates to a process for the thermal decomposition and conversion of organic and inorganic substances in a bed consisting of mechanically moving packing elements, which is located in a heated, upright cylindrical reactor, and to an apparatus for carrying out the process.
  • DE-OS 26 41 264 describes a method and an apparatus for pyrohydrolytic decomposition of waste materials, the reaction taking place at temperatures between 600 and 1000 ° C.
  • this process has the disadvantage that the different decomposition processes of liquid and solid substances result in different thermal loads, which lead to different hot and cold spots in the reactor.
  • the decomposition reaction takes place at different speeds, depending on where in the The reaction mixture is in the reactor. Since the dwell time is determined by the metering capacity and the volume of the reactor, locally different decomposition efficiencies arise, which overall increase the proportion of higher hydrocarbons (tar, soot) in the exhaust gas.
  • the corrosion can only be controlled to a very limited extent, since the decomposition products can only be bound incompletely by admixed basic additives Ca (OH) 2 . This is mainly due to the fact that the quality of mixing of the liquid substance to be decomposed with the existing solid organic waste and the basic additive present in solid form is very low.
  • the packing is moved in a special circulation within the reactor by targeted stirring of the packed bed.
  • energy is transported uniformly inwards from the outer wall of the reactor and, on the other hand, a build-up of substances foreign to the filler on the filler and on the inside of the reactor is avoided.
  • a relatively coarse-grained dust is formed as a solid reaction product, which is discharged with the exhaust gas.
  • the exhaust gas is then dedusted in a known manner.
  • the process according to the invention prevents different thermal loads on the reactor as well as decomposition reactions taking place at different speeds.
  • the amount of exhaust gas is only determined by the minimum necessary purge gas flow, e.g. Nitrogen, enlarged.
  • the method according to the invention is largely insensitive to overdosing and underdosing. Temporary overdoses are no problem, stoichiometric mixtures of the substances to be decomposed with additives only have to be correct over longer periods of time.
  • the process according to the invention can also be used to push through larger specific amounts of waste without breaking through undecomposed products in the middle of the reactor.
  • a device consisting of a heated, upright cylindrical reactor with packing and a stirrer consisting of stirrer axis, support arms and one or more helices, the pitch of the helix being between 10 and 45 °, the helix with the Wall of the reactor form an angle ⁇ between 45 and 85 °, the support arms, as seen in the direction of rotation, are inclined forward and downward by an angle ⁇ between 5 and 45 ° and the width of the coils and support arms is greater than the filler diameter or the hydraulic diameter of the Packing.
  • the pitch of the spirals (2) is between 20 and 30 °, the spirals (2) form an angle ⁇ between 65 and 75 ° with the wall (7) of the reactor and the support arms (9) around one Angles f are inclined between 15 and 25 °. It is also advantageous if the spirals (2) are at least single-thread, as well as if the distance between the outer edge (6) of the spirals (2) and the wall (7) is at most 75% of the diameter of the smallest packing. This also applies to the distance of the lowest support arm (9) from the bottom (10) of the reactor, which should be at most 75% of the diameter of the smallest packing. For better movement of the packing, it is advantageous if the front edge (5) of the support arm (9) is designed in the shape of a scoop or wedge.
  • the stirrer is expediently made of a metallic material which is harder than the packing and is resistant to corrosion and high temperatures.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing Of Solid Wastes (AREA)
EP83101052A 1982-02-17 1983-02-04 Procédé et appareil pour la destruction thermique des substances organiques et minérales Expired EP0090148B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3205569 1982-02-17
DE3205569A DE3205569C2 (de) 1982-02-17 1982-02-17 Verfahren und Vorrichtung zur thermischen Zersetzung von organischen und anorganischen Substanzen

Publications (3)

Publication Number Publication Date
EP0090148A2 true EP0090148A2 (fr) 1983-10-05
EP0090148A3 EP0090148A3 (en) 1984-06-13
EP0090148B1 EP0090148B1 (fr) 1986-07-23

Family

ID=6155910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101052A Expired EP0090148B1 (fr) 1982-02-17 1983-02-04 Procédé et appareil pour la destruction thermique des substances organiques et minérales

Country Status (5)

Country Link
EP (1) EP0090148B1 (fr)
JP (2) JPS58156340A (fr)
CA (1) CA1190383A (fr)
DE (2) DE3205569C2 (fr)
ES (2) ES519130A0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156562A2 (fr) * 1984-03-07 1985-10-02 Ngk Insulators, Ltd. Méthode et appareil pour sécher un matériau liquide
EP0401811A1 (fr) * 1989-06-08 1990-12-12 Nukem GmbH Dispositif pour le traitement thermique de matériaux organiques et inorganiques
WO2002076609A1 (fr) * 2001-03-22 2002-10-03 Ceramic Fuel Cells Limited Reacteur en phase liquide
AU2002240707B2 (en) * 2001-03-22 2005-12-15 Srl Performance Limited Liquid phase reactor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061299B (de) * 1958-04-30 1959-07-16 Bayer Ag Reduktionsofen zur Herstellung pulverfoermiger Hydrierungskatalysatoren
DE1218265B (de) * 1962-08-01 1966-06-02 Basf Ag Wendelruehrer
US3380721A (en) * 1965-07-09 1968-04-30 Zd Normal Ussr Conveyor furnace for heat-treatment of parts
DE1607776A1 (de) * 1967-11-29 1970-07-09 Kranz Gmbh Karl Vorrichtung zum Mischen pulverfoermiger Stoffe
DE2714812A1 (de) * 1977-04-02 1978-10-12 Basf Ag Vorrichtung zur durchfuehrung von polymerisationen aus der gasphase
EP0044991A1 (fr) * 1980-07-25 1982-02-03 Nukem GmbH Procédé et installation pour la destruction pyrolytique de substances organiques contenant des halogènes et/ou du phosphore
DE3109513A1 (de) * 1980-03-12 1982-02-11 Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo "verfahren und vorrichtung zur mikrowellen-waermebehandlung"

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE646182C (de) * 1935-07-04 1937-06-10 Hermann Niggemann Dr Verfahren und Vorrichtung zum Schwelen von bituminoesen Brennstoffen
JPS5230539A (en) * 1975-09-02 1977-03-08 Koji Ihara Pachinko (pinball game) island using square iron pipe as pole

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061299B (de) * 1958-04-30 1959-07-16 Bayer Ag Reduktionsofen zur Herstellung pulverfoermiger Hydrierungskatalysatoren
DE1218265B (de) * 1962-08-01 1966-06-02 Basf Ag Wendelruehrer
US3380721A (en) * 1965-07-09 1968-04-30 Zd Normal Ussr Conveyor furnace for heat-treatment of parts
DE1607776A1 (de) * 1967-11-29 1970-07-09 Kranz Gmbh Karl Vorrichtung zum Mischen pulverfoermiger Stoffe
DE2714812A1 (de) * 1977-04-02 1978-10-12 Basf Ag Vorrichtung zur durchfuehrung von polymerisationen aus der gasphase
DE3109513A1 (de) * 1980-03-12 1982-02-11 Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo "verfahren und vorrichtung zur mikrowellen-waermebehandlung"
EP0044991A1 (fr) * 1980-07-25 1982-02-03 Nukem GmbH Procédé et installation pour la destruction pyrolytique de substances organiques contenant des halogènes et/ou du phosphore

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156562A2 (fr) * 1984-03-07 1985-10-02 Ngk Insulators, Ltd. Méthode et appareil pour sécher un matériau liquide
EP0156562A3 (en) * 1984-03-07 1986-10-29 Ngk Insulators, Ltd. Liquid material drying method and apparatus
EP0401811A1 (fr) * 1989-06-08 1990-12-12 Nukem GmbH Dispositif pour le traitement thermique de matériaux organiques et inorganiques
WO2002076609A1 (fr) * 2001-03-22 2002-10-03 Ceramic Fuel Cells Limited Reacteur en phase liquide
AU2002240707B2 (en) * 2001-03-22 2005-12-15 Srl Performance Limited Liquid phase reactor
US7771111B2 (en) * 2001-03-22 2010-08-10 Ceramic Fuel Cells Limited Liquid phase reactor

Also Published As

Publication number Publication date
DE3364576D1 (en) 1986-08-28
ES284567U (es) 1985-09-16
ES284567Y (es) 1986-05-01
JPH04122639U (ja) 1992-11-04
JPS58156340A (ja) 1983-09-17
ES8403154A1 (es) 1984-03-01
JPH0523216Y2 (fr) 1993-06-15
EP0090148B1 (fr) 1986-07-23
CA1190383A (fr) 1985-07-16
DE3205569C2 (de) 1983-12-15
DE3205569A1 (de) 1983-09-08
ES519130A0 (es) 1984-03-01
EP0090148A3 (en) 1984-06-13

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