EP0179195B1 - Système d'alimentation de four permettant de filtrer les particules des gaz; de condenser les produits volatils et de les retourner au four - Google Patents

Système d'alimentation de four permettant de filtrer les particules des gaz; de condenser les produits volatils et de les retourner au four Download PDF

Info

Publication number
EP0179195B1
EP0179195B1 EP85107149A EP85107149A EP0179195B1 EP 0179195 B1 EP0179195 B1 EP 0179195B1 EP 85107149 A EP85107149 A EP 85107149A EP 85107149 A EP85107149 A EP 85107149A EP 0179195 B1 EP0179195 B1 EP 0179195B1
Authority
EP
European Patent Office
Prior art keywords
reactor
gaseous effluents
granular form
pipe
conveyor
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
EP85107149A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0179195A1 (fr
Inventor
Michel G. Drouet
Richard J. Munz
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.)
Hydro Quebec
Original Assignee
Hydro Quebec
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 Hydro Quebec filed Critical Hydro Quebec
Publication of EP0179195A1 publication Critical patent/EP0179195A1/fr
Application granted granted Critical
Publication of EP0179195B1 publication Critical patent/EP0179195B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • 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 present invention relates to the purification of gaseous effluents. More specifically, the invention relates to the treatment of gaseous effluents produced or leaving a reactor operating at high temperature, in order to remove the impurities. Even more precisely, it can be said that the invention relates to a process and to an installation for feeding a reactor making it possible to separate the particles from the gases, to condense the volatile products and to return the latter to the reactor.
  • An object of the present invention lies in the condensation of volatile materials and the stopping of the dust which results from the treatment of nuclear waste.
  • a method is provided which makes it possible to stop dust, droplets, dangerous products, and any undesirable material which can escape into the atmosphere.
  • the feed rate of the material in granular form is controlled so that the material in granular form is introduced in an amount sufficient to meet the standards of the reactor.
  • the speed of the gaseous effluents is adjusted so as to ensure maximum filtration efficiency when the gaseous effluents move against the current through the material in granular form.
  • a propeller conveyor or any other solid conveyor is provided in the pipe, and the speed of the propeller conveyor is adjusted so as to supply the reactor with a quantity of material in granular form sufficient to meet the demand of the reactor.
  • the speed of the gaseous effluents through the particles in the pipe is preferably adjusted to the pitch and to the diameter of the propeller conveyor so that the material in granular form stops practically all the impurities present in the gaseous effluents, whereas the latter move in the pipe.
  • the installation according to the invention for the treatment of gaseous effluents in order to remove the impurities comprises a high temperature reactor (1), where said gaseous effluents are produced, first means (5) for feeding a material to treating in the reactor, means for heating the contents of the reactor and means (29) for allowing the gaseous effluents to leave the atmosphere.
  • the installation is characterized by the fact that it comprises second means (13, 15), distinct from the first means, for supplying a material in granular form to the reactor, said second means comprising a pipe (13) inclined downwards connected to said reactor, a conveyor (17) arranged in said pipe for feeding the material in granular form into the reactor and control means for adjusting the speed of said conveyor so as to introduce into the reactor a quantity of material in granular form sufficient to satisfy the requirements of the reactor, said pipe comprising means allowing the gaseous effluents to escape upward against the current by the pipe inclined through said material in granular form, and means for independently controlling the feed rate of the material in granular form and the speed of the gaseous effluents.
  • the system which is illustrated in the drawing comprises a reactor 1 which can be used, for example, to form a product of fusion between nuclear waste and sand.
  • the reactor can be heated everywhere means known to those skilled in the art, in particular by using electrodes (not shown). These means have been illustrated schematically by the arrow 3.
  • the material which is intended to be treated in the reactor 1, in particular a mud, a chlorinated polymer, a radioactive material, etc., is introduced into the reactor by the inlet 5.
  • the material is introduced into reactor 1 in the direction of arrow 7.
  • a pipe 13 is disposed in the closure 11, and as can be seen in the drawing, this pipe 13 enters into communication with a chamber 15 as will be seen in more detail below.
  • the material to be treated is was introduced into the reactor via inlet 5.
  • radioactive material it is desired to form a glassy mass of the radioactive material so as to prevent it from being leached.
  • sand is introduced through the inlet 25 and the latter is allowed to descend into the pipe 13 in a controlled downward movement resulting from the rotation of the propeller conveyor 17.
  • the speed of the conveyor is adjusted so that the feed rate of the material in granular form into the reactor is adapted to the need of the latter.
  • Any reactive product, any substance that can be condensed, granular material, or dust can be stopped by the descending sand and then returned to the bath 33.
  • the gases which escape from the chamber 15 can exit into the atmosphere at relatively pure state.
  • This system offers possibilities of obvious application in the solidification of nuclear waste. It can also be used in metallurgical furnaces, and in heating appliances used to recover special alloys, to incinerate hazardous waste, and in furnaces for the production of glass and ceramics. Obviously, we can also consider other uses of this system.
  • the system can be used with sand to condense volatile materials and stop dust.
  • sand and coke can be used to stop dust and droplets.
  • Sand and a reactive product can be used to stop dangerous products.
  • the dust produced in metallurgical furnaces can be prevented from escaping into the atmosphere by using the system according to the invention.
  • the losses of volatile materials are controlled by the rate of evaporation from the surface of the liquid bath and the rate of dissolution in the bath. Returning the waste that has been volatilized or entrained by the gases to the bath considerably reduces losses because only a small fraction of the material returned to the bath will be volatilized again or entrained by the gases.
  • the products to be treated can be supplied in the form of liquid, solid or mud via the inputs 5 or 31.
  • the main application in metallurgy is to prevent most of the dust from reaching the atmosphere.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Treating Waste Gases (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP85107149A 1984-10-22 1985-06-11 Système d'alimentation de four permettant de filtrer les particules des gaz; de condenser les produits volatils et de les retourner au four Expired - Lifetime EP0179195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000466016A CA1246323A (fr) 1984-10-22 1984-10-22 Methode et systeme de purification d'effluents gazeux
CA466016 1984-10-22

Publications (2)

Publication Number Publication Date
EP0179195A1 EP0179195A1 (fr) 1986-04-30
EP0179195B1 true EP0179195B1 (fr) 1990-09-26

Family

ID=4128966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107149A Expired - Lifetime EP0179195B1 (fr) 1984-10-22 1985-06-11 Système d'alimentation de four permettant de filtrer les particules des gaz; de condenser les produits volatils et de les retourner au four

Country Status (13)

Country Link
EP (1) EP0179195B1 (el)
JP (1) JPS61101220A (el)
KR (1) KR910004787B1 (el)
AT (1) ATE57041T1 (el)
AU (1) AU584892B2 (el)
BR (1) BR8502776A (el)
CA (1) CA1246323A (el)
DE (1) DE3579885D1 (el)
ES (2) ES8706468A1 (el)
GR (1) GR851080B (el)
IN (1) IN163444B (el)
MX (1) MX171201B (el)
ZA (1) ZA852823B (el)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3833661A1 (de) * 1988-10-04 1990-04-05 Uhde Gmbh Vorrichtung mit schuettschichtfiltern zur reinigung von rohgas
DE102017122970B4 (de) 2017-10-04 2021-10-21 FischerteC GmbH Verbrennungsofen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1194873A (fr) * 1960-12-22 1959-11-13 Soc Produits Azotes Sa Procédé et installations pour le dépoussiérage des fumées émises par les foursd'électrométallurgie
FR1445500A (fr) * 1965-03-12 1966-07-15 Commissariat Energie Atomique Procédé de destruction de liquides contaminés
BE788481A (fr) * 1972-09-06 1973-01-02 Belgonucleaire Sa Perfectionnements au traitement des residus combustibles
AU539929B2 (en) * 1980-10-29 1984-10-25 Exxon Research And Engineering Company Fluid-solid contacting using fluidised bed of magnetic particles
US4391205A (en) * 1981-02-06 1983-07-05 Morey Norval K Method and apparatus for burning green wood chips

Also Published As

Publication number Publication date
GR851080B (el) 1985-11-25
DE3579885D1 (de) 1990-10-31
IN163444B (el) 1988-09-24
ES8802414A1 (es) 1988-06-16
ATE57041T1 (de) 1990-10-15
AU4144485A (en) 1986-05-01
CA1246323A (fr) 1988-12-13
KR910004787B1 (ko) 1991-07-13
AU584892B2 (en) 1989-06-08
BR8502776A (pt) 1986-05-27
MX171201B (es) 1993-10-06
EP0179195A1 (fr) 1986-04-30
ES551208A0 (es) 1988-06-16
JPS61101220A (ja) 1986-05-20
ES8706468A1 (es) 1987-07-16
ES542717A0 (es) 1987-07-16
JPH0413004B2 (el) 1992-03-06
KR860003623A (ko) 1986-05-28
ZA852823B (en) 1985-12-24

Similar Documents

Publication Publication Date Title
EP0359209B1 (en) Method and apparatus for using hazardous waste to form non-hazardous aggregate
EP0692677B1 (fr) Procédé et installation de thermolyse de déchets
BE1005186A3 (fr) Procede de valorisation de dechets de tout type.
US4652289A (en) Purification of effluent gases
NL8600881A (nl) Afval-vernietiging.
EP2504624A1 (fr) Procédé et dispositif de destruction thermique de composés organiques par un plasma d'induction.
EP1219336B1 (fr) Procédé et dispositif d'élimentation des éléments volatils néfastes, notamment chlorures et/ou sulfates, contenus dans un courant de fumées
WO1987003215A1 (fr) Procede et installation de neutralisation de fumees acides provenant notamment de la combustion de residus
EP0710163B1 (fr) Procede de traitement de materiaux polluants et fusibles
EP0179195B1 (fr) Système d'alimentation de four permettant de filtrer les particules des gaz; de condenser les produits volatils et de les retourner au four
US4986197A (en) Apparatus for using hazardous waste to form non hazardous aggregate
EP0454513B1 (fr) Procédé et four de traitement de déchets incinérables
US3733271A (en) Waste disposal apparatus and method
AU677375B2 (en) Process for removal of petroleum from particulate materials
EP0426925B1 (fr) Procédé et installation de traitement de déchets urbains et/ou industriels
WO1994026941A1 (fr) Procede et installation pour le traitement par thermolyse sous vide de produits solides, avec separation et recuperation en continu d'une fraction liquide de ces produits
KR950013974B1 (ko) 유해성 폐기물을 무해성 혼합재로 만들기 위한 방법 및 그의 장치
US4008147A (en) Method for treatment of heavy fraction recovered through thermal cracking of high molecular-weight hydrocarbonaceous materials
KR100824815B1 (ko) 석유 저장탱크의 슬러지에 함유된 탄화수소 화합물의 제거 및 탄화수소 화합물을 함유하는 잔여물 처리용 플라스마 방법
JPS60126512A (ja) 有機質含有汚泥の焼却方法
WO1996000267A1 (fr) Procede pour traiter les dechets municipaux combustibles solides ou analogues par gazeification
JP2000087055A (ja) 廃棄物から固形燃料を製造する方法及び設備
FR2716524A1 (fr) Procédé et dispositif de traitement de déchets hétérogènes.
EP0877827A1 (fr) Procede de traitement d'un produit pulverulent et installation pour la mise en oeuvre de ce procede
JP2001149891A (ja) 重金属含有物質を溶融させる方法

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860611

17Q First examination report despatched

Effective date: 19880120

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 57041

Country of ref document: AT

Date of ref document: 19901015

Kind code of ref document: T

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

Ref document number: 3579885

Country of ref document: DE

Date of ref document: 19901031

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

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

Ref country code: GB

Payment date: 19910606

Year of fee payment: 7

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

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

Ref country code: DE

Payment date: 19910828

Year of fee payment: 7

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920611

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920611

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

Ref country code: DE

Effective date: 19930302

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 85107149.8

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

Ref country code: LU

Payment date: 19970304

Year of fee payment: 13

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

Ref country code: FR

Payment date: 19970417

Year of fee payment: 13

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

Ref country code: SE

Payment date: 19970512

Year of fee payment: 13

Ref country code: BE

Payment date: 19970512

Year of fee payment: 13

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

Ref country code: AT

Payment date: 19970528

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: 19970612

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: 19970630

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: 19980611

Ref country code: AT

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

Effective date: 19980611

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: 19980612

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: 19980630

Ref country code: CH

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

Effective date: 19980630

Ref country code: BE

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

Effective date: 19980630

BERE Be: lapsed

Owner name: HYDRO-QUEBEC

Effective date: 19980630

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: 19990101

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 19990226

EUG Se: european patent has lapsed

Ref document number: 85107149.8

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

Effective date: 19990101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST