BE648523A - - Google Patents

Info

Publication number
BE648523A
BE648523A BE648523DA BE648523A BE 648523 A BE648523 A BE 648523A BE 648523D A BE648523D A BE 648523DA BE 648523 A BE648523 A BE 648523A
Authority
BE
Belgium
Prior art keywords
emi
current
gas stream
cleaning
gas
Prior art date
Application number
Other languages
French (fr)
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 filed Critical
Publication of BE648523A publication Critical patent/BE648523A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20Combinations of devices covered by groups B01D45/00 and B01D46/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/31Other construction details
    • B01D2201/313Means for protecting the filter from the incoming fluid, e.g. shields

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Description

  

   <EMI ID=1.1> 

  
 <EMI ID=2.1>  

  
 <EMI ID=3.1>  tlon de nettoyage si le débit d'air à contre courant est trop  important, ce qui provoque une diminution de rendement de fil-

  
 <EMI ID=4.1> 

  
voisines, ou reste en couche trop épaisse, si le débit d'air à contre-courant eat insuffisant, ce qui réduit la capacité de filtration des éléments filtrante. Il était également connu

  
 <EMI ID=5.1> 

  
 <EMI ID=6.1> 

  
 <EMI ID=7.1> 

  
aurait pas un nettoyage uniforme. En outre l'action de secouage ne se transmettait pas régulièrement sur toute la hauteur de choqua organe filtrant.

  
 <EMI ID=8.1> 

  
par une extrémité, de sorte que pour éviter le danger de rupture d'organee filtrante fragiles dans le cas de la traction ou

  
 <EMI ID=9.1> 

  
le cas de l'affaissement, on devait dans le premier cas réduire

  
 <EMI ID=10.1> 

  
 <EMI ID=11.1> 

  
trants, ce qui conduisait au même inconvénient.

  
Afin d'éviter cas inconvénients, l'invention prévoit que

  
 <EMI ID=12.1> 

  
de l'exposé, appelé courant pulsatoire. Celui-ci débouche non seulement les pore. du tissu filtrant ou analogue, maia produit

  
 <EMI ID=13.1> 

  
que organe filtrant, d'autant plus grande que cet organe en a

  
 <EMI ID=14.1>   <EMI ID=15.1>  

  
 <EMI ID=16.1> 

  
phère. 

  
 <EMI ID=17.1> 

  
Ce courant gazeux, par exemple d'air, eet produit par un ventilateur 13, dont le débit continu est transformé en courant

  
 <EMI ID=18.1> 

  
exemple un clapet rotatif 14, bien que tout autre dispositif  approprié puisse être utilisé à cet effet. 

  
 <EMI ID=19.1> 

  
 <EMI ID=20.1> 

  
13 en marche, ainsi que le clapet rotatif 14. Sous l'action. 

  
du courant gazeux pulsatoire ainsi introduit dans l'enceinte

  
1, les manches 2 se compriment et se décompriment alternativemcnt, subissant ainsi un battage détachant les poussières

  
de sa face interne, tandis que le gaz traversant la matière filtrante en contre-courant dégage les poussières de ses pores.  Afin d'éviter que les manches ne s'écrasent complètement, elles  sont muniea d'anneaux espacés de renfort 15. Le tissu filtrant

  
 <EMI ID=21.1> 

  
 <EMI ID=22.1> 

  
 <EMI ID=23.1> 

  
3. L'espacement des anneaux 15 et la tension des ressorts 3

  
 <EMI ID=24.1> 

  
au rythme voulu, en harmonie avec la période de pulsation du courant de gaz inversé. L'amplitude et la fréquence des pul-

  
 <EMI ID=25.1> 

  
 <EMI ID=26.1> 

  
battage est d'autant plus grande que le degré de colmatage de la manche est plus grand, le secouage étant donc le plus fort pour les manches ou parties de manche qui en ont le plus le*soin. Pour celles qui sont moins colmatées, le battage rente

  
 <EMI ID=27.1> 

  
l'intérieur,: du tissu par le contre-courant qui traverse celui- <EMI ID=28.1> 

  
 <EMI ID=29.1> 

  
5 pour réduire l'orifice de passage entre la trémie 6 et le collecteur 7 en période de nettoyage en fonction de la quantité

  
 <EMI ID=30.1> 

  
apportées au système décrit sans se départir de l'esprit de l'invention. Ainsi, par exemple, tous autres moyens peuvent 

  
 <EMI ID=31.1> 

  
 <EMI ID=32.1> 

  
dis que l'enceinte aurait une paroi mobile, par exemple constituée

  
 <EMI ID=33.1> 

  
 <EMI ID=34.1> 

  
 <EMI ID=35.1> 

  
dans ladite enceinte.



   <EMI ID = 1.1>

  
 <EMI ID = 2.1>

  
 <EMI ID = 3.1> cleaning tlon if the counter-current air flow is too high, which causes a decrease in wire yield

  
 <EMI ID = 4.1>

  
neighbors, or remains in a too thick layer, if the air flow against the current is insufficient, which reduces the filtration capacity of the filter elements. He was also known

  
 <EMI ID = 5.1>

  
 <EMI ID = 6.1>

  
 <EMI ID = 7.1>

  
would not have uniform cleaning. In addition, the shaking action was not transmitted evenly over the entire height of the filtering organ.

  
 <EMI ID = 8.1>

  
by one end, so that to avoid the danger of breakage of fragile filter elements in the event of traction or

  
 <EMI ID = 9.1>

  
in the case of sagging, in the first case one had to reduce

  
 <EMI ID = 10.1>

  
 <EMI ID = 11.1>

  
trants, which led to the same drawback.

  
In order to avoid these drawbacks, the invention provides that

  
 <EMI ID = 12.1>

  
of the presentation, called pulsating current. This not only unclogs the pores. filter cloth or the like, but produced

  
 <EMI ID = 13.1>

  
that filtering organ, all the larger as this organ has

  
 <EMI ID = 14.1> <EMI ID = 15.1>

  
 <EMI ID = 16.1>

  
phere.

  
 <EMI ID = 17.1>

  
This gas stream, for example air, eet produced by a fan 13, the continuous flow of which is transformed into current

  
 <EMI ID = 18.1>

  
example a rotary valve 14, although any other suitable device can be used for this purpose.

  
 <EMI ID = 19.1>

  
 <EMI ID = 20.1>

  
13 running, as well as the rotary valve 14. Under action.

  
of the pulsating gas stream thus introduced into the enclosure

  
1, the sleeves 2 compress and decompress alternately, thus undergoing beating to loosen the dust

  
of its internal face, while the gas passing through the filtering material in counter-current releases the dust from its pores. To prevent the sleeves from completely crushing, they are fitted with spaced reinforcement rings 15. The filter fabric

  
 <EMI ID = 21.1>

  
 <EMI ID = 22.1>

  
 <EMI ID = 23.1>

  
3. The spacing of the rings 15 and the tension of the springs 3

  
 <EMI ID = 24.1>

  
at the desired rate, in harmony with the period of pulsation of the reverse gas current. The amplitude and frequency of the

  
 <EMI ID = 25.1>

  
 <EMI ID = 26.1>

  
threshing is all the greater as the degree of clogging of the sleeve is greater, the shaking being therefore stronger for the sleeves or parts of the sleeve which have the most * care. For those which are less clogged, the threshing rents

  
 <EMI ID = 27.1>

  
the interior: of the fabric by the counter-current which crosses it- <EMI ID = 28.1>

  
 <EMI ID = 29.1>

  
5 to reduce the passage opening between the hopper 6 and the collector 7 during the cleaning period depending on the quantity

  
 <EMI ID = 30.1>

  
made to the system described without departing from the spirit of the invention. Thus, for example, all other means can

  
 <EMI ID = 31.1>

  
 <EMI ID = 32.1>

  
say that the enclosure would have a movable wall, for example made up of

  
 <EMI ID = 33.1>

  
 <EMI ID = 34.1>

  
 <EMI ID = 35.1>

  
in said enclosure.

 

Claims (1)

RESUME. ABSTRACT. L'invention vise <EMI ID=36.1> The invention is aimed at <EMI ID = 36.1> <EMI ID=37.1> <EMI ID = 37.1> <EMI ID=38.1> <EMI ID = 38.1> analogue, et agencés dans uno du;(.;ointe dans laquello le gaz poussiéreux est amené et oblige le traverser les organes fil- analogous, and arranged in uno du; (.; anointed in laquello the dusty gas is brought and forces the wire organs to cross it <EMI ID=39.1> <EMI ID = 39.1> <EMI ID=40.1> <EMI ID = 40.1> hors du courant gazeux, le nettoyage se faisant à l'aide d'un courant gazeux que l'on fait agir sur les organes filtrante en out of the gas stream, cleaning being done using a gas stream which is made to act on the filtering elements by <EMI ID=41.1> <EMI ID = 41.1> <EMI ID=42.1> <EMI ID = 42.1> <EMI ID=43.1> <EMI ID = 43.1> <EMI ID=44.1> .Autre - <EMI ID=45.1> <EMI ID=46.1> <EMI ID = 44.1> .Other - <EMI ID = 45.1> <EMI ID = 46.1>
BE648523D 1963-06-19 1964-05-28 BE648523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR938584A FR1368257A (en) 1963-06-19 1963-06-19 Method for periodically cleaning the filtering members of gas filtration apparatus, and filtration apparatus equipped for the implementation of this method

Publications (1)

Publication Number Publication Date
BE648523A true BE648523A (en) 1964-09-16

Family

ID=8806376

Family Applications (1)

Application Number Title Priority Date Filing Date
BE648523D BE648523A (en) 1963-06-19 1964-05-28

Country Status (2)

Country Link
BE (1) BE648523A (en)
FR (1) FR1368257A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1507851C3 (en) * 1965-09-01 1982-07-15 Werner Dr.-Ing. 6000 Frankfurt Solbach Process for cleaning sieve filters and device for carrying out the same

Also Published As

Publication number Publication date
FR1368257A (en) 1964-07-31

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