EP0479937A1 - Dispositif destines a des installations de purification de gaz, empechant la decharge de gaz non purifie lors de changements du sens d'ecoulement de gaz. - Google Patents

Dispositif destines a des installations de purification de gaz, empechant la decharge de gaz non purifie lors de changements du sens d'ecoulement de gaz.

Info

Publication number
EP0479937A1
EP0479937A1 EP90917830A EP90917830A EP0479937A1 EP 0479937 A1 EP0479937 A1 EP 0479937A1 EP 90917830 A EP90917830 A EP 90917830A EP 90917830 A EP90917830 A EP 90917830A EP 0479937 A1 EP0479937 A1 EP 0479937A1
Authority
EP
European Patent Office
Prior art keywords
gas
reversal
flow direction
installation
channel
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
EP90917830A
Other languages
German (de)
English (en)
Other versions
EP0479937B1 (fr
Inventor
Ake Kaellstrand
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.)
Adtec AB
Original Assignee
Adtec AB
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 Adtec AB filed Critical Adtec AB
Publication of EP0479937A1 publication Critical patent/EP0479937A1/fr
Application granted granted Critical
Publication of EP0479937B1 publication Critical patent/EP0479937B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • 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
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating

Definitions

  • the present invention relates to gas purifying instal ⁇ lations operating with reversal of the gas-through-flow direction, and more precisely it concerns a method and a device to prevent polluted gas which on account of the 5 reversal of the gas-flow direction remains untreated, from reaching the environment.
  • the invention concerns e.g. the type of gas purificati installation which is described in SE 8403330-7 (Publicatio No. 441 623).
  • SE 8403330-7 Publicatio No. 441 623.
  • the main object of the present invention is to provide an efficient method and a device of simple construction by means of which untreated gases are positively prevented from reaching the atmosphere in connections with reversal
  • FIG. 1 illustrates a purifying installation which is equipped with a device in accordance with the invention, immediately preceding the reversal of the flow direction of the gas through the pu:_ifying installation;
  • FIG. 2 illustrates the installation immediately after completion of the reversal of the through-flow direction
  • FIG. 3 illustrates the same installation immediately prior to the next reversal of the through-flow direction
  • FIG. 4 illustrates the installation immediately after the last-mentioned reversal of the through-flow direction.
  • the purifying installation illustrated in the drawings and generally referred to by reference numeral 1 is of a type known per se and described e.g. in SE 8403330-7.
  • the illustrated installation comprises a chamber having two perforated walls 2 defining between them a treatment zone 3, preferably consisting of sand, wherein heating elements 4 are positioned.
  • the device At its top and its bottom the device comprises collection and through-flow chambers 5 and 6, respectively, to which are connected gas conduits 7 and 8, respectively.
  • the gas conduits 7, 8 meet in a valve housing 9 into which opens a conduit 10 connecting the valve housing with the surrounding atmosphere. Both conduits 7 and 8 carry gas to and from the installation 1 , depending on the position in which a valve means 11 is set inside the valve housing 9.
  • gas is heat-treated for combustion of the impurities contained in the gas.
  • additional energy is supplied by the heating elements 4 to assist in elevating the temperature.
  • the gas is forced to pass alternately in opposite directions through the treatment zone, the reversals of direction being effected by means of the valve 9, 11. In the position of the valve illustrate in Fig.
  • Fig. 3 illustrates the valve means in the alternative setting position in which untreated gas flows through the common channel 12, the valve housing 9, the conduit 8 and the collection chamber 6 to pass through the treatment bed 3. Gas treated therein passes further outwards through the collection chamber 5, the conduit 7, the valve housing 9 and it is discharged to the atmosphere through the out ⁇ let 10. Accordingly, if polluted gas to be treated is supplied continuously through the channel 12, any such gas that may remain in the regions closest to the valve housing at the time immediately following a reversal of the valve means, i.e.
  • the purpose of the invention is to prevent such dis ⁇ charges of untreated gas and to this end it provides a device generally consisting of an auxiliary unit 13 which is mounted in the common inlet 12 leading to the valve housing 9.
  • the auxiliary device 13 consists of a channel system including an inlet chamber 14, an outlet chamber
  • the two channels could be in the form of two groups of channels
  • a flap valve 18 which, depending on its position, directs gas entering the common channel 12 to one or the other of the two channel systems 16 or 17.
  • the outlet chamber 15 serves to direct gas discharged from the two channel systems 16, 17 to the common inlet channel 12 leading to the valve housing 9.
  • Pressure-increasing devices such as fans or similar means may be connected to the intake channels 19, 20. In operation, the device functions in the following manner. In the position of the valve flaps 11 and 18 illu ⁇ strated in Fig.
  • valve 11 Upon reversal of the valve 11 to change the flow direction of the gas through the installation 1 also the position of valve 18 is reversed, with the result that, as illustrated in Fig. 2, polluted gas instead will pass through the channel system 17 and into the valve housing via the outlet chamber 15 while the channel system 16 successively filled with fresh air entering through the intake 19 and polluted gas remaining inside the channel system 116 successively will flow into the installation 1 while the fresh air gradually fills the channel system 16.
  • Fig. 3 is illustrated the position when the entire channel system 16 is filled with fresh air entering at a comparatively slow rate.
  • some fresh air will be entrained by the pollute gases into the installation, also after filling of the associated channel system with fresh air, if some further time passes before a change of flow direction takes place.
  • the volume of the channel systems 16, 17 should however, be sufficient to allow fresh air contained therein to flow through the entire purifying installation 1 before reversal of the valve flap 11 is effected.
  • the auxiliary device 13 is in the shape of a channel system and in the aforegoing description reference is made to a channel system but obviously it is possible to arrange the chambers formed by the channels in some other way.
  • vessels may be filled alternately with fresh air and polluted gas and alternately be shunted into the regular supply inlet to the purifying installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L'invention concerne essentiellement des installations de purification de gaz dont le fonctionnement prévoit l'inversion du sens d'écoulement, et comportant un système de canal à double usage, c'est-à-dire que lorsqu'il fonctionne dans le sens d'écoulement de passage, il constitue le canal d'admission acheminant du gaz pollué dans l'installation, et lorsqu'il fonctionne dans le sens d'écoulement opposé, il constitue le canal de décharge de gaz purifié. Selon l'invention, on empêche du gaz pollué de se décharger dans l'atmosphère pendant et immédiatement après l'inversion du sens d'écoulement, par nettoyage de l'installation de purification à l'aide d'air neuf ou d'un autre gaz de nettoyage, pendant une durée prédéterminée.
EP90917830A 1989-06-28 1990-06-25 Dispositif destines a des installations de purification de gaz, empechant la decharge de gaz non purifie lors de changements du sens d'ecoulement de gaz Expired - Lifetime EP0479937B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8902328 1989-06-28
SE8902328A SE463940B (sv) 1989-06-28 1989-06-28 Anordning vid gasreningsanlaeggningar foer att vid riktningsvaexling foerhindra utslaepp av orenad gas
PCT/SE1990/000453 WO1991000477A1 (fr) 1989-06-28 1990-06-25 Procede et dispositif destines a des installations de purification de gaz, empêchant la decharge de gaz non purifie lors de changements du sens d'ecoulement de gaz

Publications (2)

Publication Number Publication Date
EP0479937A1 true EP0479937A1 (fr) 1992-04-15
EP0479937B1 EP0479937B1 (fr) 1993-09-01

Family

ID=37309464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90917830A Expired - Lifetime EP0479937B1 (fr) 1989-06-28 1990-06-25 Dispositif destines a des installations de purification de gaz, empechant la decharge de gaz non purifie lors de changements du sens d'ecoulement de gaz

Country Status (6)

Country Link
EP (1) EP0479937B1 (fr)
AT (1) ATE93953T1 (fr)
AU (1) AU5951390A (fr)
DE (1) DE69003108T2 (fr)
SE (1) SE463940B (fr)
WO (1) WO1991000477A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI91333C (fi) * 1990-07-19 1994-06-10 Nokia Kaapeli Oy Kaapeli
SE469293B (sv) * 1991-12-19 1993-06-14 Bjoern Heed Gasbehandlingsanlaeggning av s k foerbraenningsvaexlartyp
SE515710C2 (sv) 2000-02-11 2001-10-01 Bjoern Heed Luftskåp vid en regenerativ förbränningsanordning

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1478419A (en) * 1975-01-28 1977-06-29 Air Prod & Chem Reversible heat exchanger or regenerator systems
DE3139153A1 (de) * 1981-10-01 1983-04-14 Linde Ag, 6200 Wiesbaden "verfahren zum umschalten zweier regeneratoren"
SE441623B (sv) * 1984-06-21 1985-10-21 Heed Bjoern Forfarande och anordning for forbrenning och/eller sonderdelning av fororeningar
DK161037C (da) * 1988-10-17 1991-10-28 Haldor Topsoe As Fremgangsmaade og anlaeg til kontinuerligt at rense en oxygenholdig gas for braendbare forureninger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9100477A1 *

Also Published As

Publication number Publication date
AU5951390A (en) 1991-01-17
SE8902328L (sv) 1990-12-29
SE8902328D0 (sv) 1989-06-28
EP0479937B1 (fr) 1993-09-01
DE69003108D1 (de) 1993-10-07
ATE93953T1 (de) 1993-09-15
SE463940B (sv) 1991-02-11
WO1991000477A1 (fr) 1991-01-10
DE69003108T2 (de) 1994-01-27

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