NO744185L

NO744185L -

Info

Publication number: NO744185L
Application number: NO744185A
Authority: NO
Inventors: J Pielkenrood
Original assignee: Pielkenrood Vinitex Bv
Priority date: 1973-12-22
Filing date: 1974-11-20
Publication date: 1975-07-21
Also published as: MY8000124A; SE7415732L; FR2255091B1; DK673874A; FR2255091A1; FI335774A; GB1478526A; AT339338B; ZA747408B; ES432295A1; IT1026548B; BE823665A; CH598852A5; DE2460521A1; JPS5095863A; CA1050441A; ATA969074A; NL7317653A; AU7672274A

Description

Separeringsanordning forsynt med et koalisensapparat. Separation device equipped with a coalescence device.

For å separere komponenter suspendert i en bærevæske er det kjent separeringsanordninger som omfatter f.eks. en skrånende konstruksjon av over hverandre anbragte, fortrinnsvis korru- To separate components suspended in a carrier liquid, separation devices are known which comprise e.g. a sloping construction of stacked, preferably corru-

gerte plater, mellom hvilke dannes passasjer for den væske som skal behandles. I disse passasjer er separeringsbanens lengde for disse komponenter kortere, idet komponentene så blir samlet opp på platene og glir langs disse mot den ene ende av konstruksjonen. gerte plates, between which passages are formed for the liquid to be treated. In these passages, the length of the separation path for these components is shorter, as the components are then collected on the plates and slide along them towards one end of the structure.

Separeringsvirkningen er bl.a. avhengig av partikkelstorrelsen.The separation effect is i.a. depending on the particle size.

Når partiklene er for små, vil det finne sted en utilfreds-stillende separering ved en rimelig stromningshastighet. For å oppnå en bedre separering av mindre partikler er det derfor fordelaktig å foranledige at det på forhånd bygges opp storré partikler. When the particles are too small, unsatisfactory separation will take place at a reasonable flow rate. In order to achieve a better separation of smaller particles, it is therefore advantageous to arrange for larger particles to be built up in advance.

i in

Fra tidligere patent nr. (ans.nr. 1677/73) er det kjent for å tilveiebringe koalisens av partikler suspendert i en væske, hvor væsken fores gjennom en eller flere stort sett vertikale kanaler og disses vegger vil medfore en tversgående hastighetsgradient i væsken. Folgen av dette er at partikler med forskjellige hastigheter innhenter hverandre, slik at muligheten for agglomerering okes. Slike hjelpe-apparater har vist seg å være meget effektive, men én ulempe er at de trenger plass, slik at særlig i de allerede fore-liggende separeringsanordninger kan anordning av disse midler være betenkelig. From earlier patent no. (an. no. 1677/73) it is known to provide coalescence of particles suspended in a liquid, where the liquid is fed through one or more largely vertical channels and whose walls will cause a transverse velocity gradient in the liquid. The consequence of this is that particles with different velocities catch up with each other, so that the possibility of agglomeration increases. Such auxiliary devices have proven to be very effective, but one disadvantage is that they require space, so that, especially in the already existing separation devices, the arrangement of these means can be questionable.

Oppfinnelsen tilveiebringer en separeringsanordning av det nevnte slag som er forsynt med et koalisensapparat som ikke krever noen ytterligere plass. The invention provides a separation device of the aforementioned kind which is provided with a coalescence apparatus which does not require any additional space.

Separeringsanordningen ifolge oppfinnelsen omfatter en anordning som er anbragt på en helning i et basseng og begrenses oventil av en skrå vegg, hvilket basseng ytterligere er oppdelt i to kamre ved hjelp av en skillevegg. Dennes nedre side er forenet med den skrå vegg og anordningen kjennetegnes ved en sammenbygging eller konstruksjon av plater anordnet i det triangulære rom mellom nevnte skråvegg og skilleveggen, idet stort sett vertikale passasjer dannes mellom platene, i hvilke koalisens som nevnt ovenfor, kan finne sted. Disse plater kan ha forskjellig form.og danner fortrinnsvis koalisenskanaler, i hvilke væsken kan stromme avvekslende oppover og nedover. Midler kan være anordnet for å justere hastighetsgradienten i det minste' The separation device according to the invention comprises a device which is placed on a slope in a pool and is limited above by an inclined wall, which pool is further divided into two chambers by means of a dividing wall. Its lower side is united with the inclined wall and the device is characterized by an assembly or construction of plates arranged in the triangular space between said inclined wall and the partition wall, with mostly vertical passages being formed between the plates, in which the coalescence as mentioned above can take place. These plates can have different shapes and preferably form coalescence channels, in which the liquid can flow alternately upwards and downwards. Means may be provided to adjust the velocity gradient at least'

i en del av disse passasjer.in some of these passages.

Oppfinnelsen skal belyses nærmere under henvisning til tegningene. The invention shall be explained in more detail with reference to the drawings.

Fig. 1 viser skjematisk et tverrsnitt gjennom en anordning ifolge oppfinnelsen. Fig. 1 schematically shows a cross-section through a device according to the invention.

I IN

Fig. 2 er en del av et tverrsnitt efter linjen II-II i fig. 1 for en spesiell utforelse av denne anordning. Fig. 3 er en del av et tverrsnitt tilsvarende fig. 2 i en annen utforelse, og Fig. 4 viser en del av et tverrsnitt tilsvarende fig. 1 gjennom ytterligere en utfbrelsesform. Fig. 2 is part of a cross-section along the line II-II in fig. 1 for a particular embodiment of this device. Fig. 3 is part of a cross-section corresponding to fig. 2 in another embodiment, and Fig. 4 shows part of a cross-section corresponding to fig. 1 through a further embodiment.

Separatoren i fig. 1 omfatter et basseng 1 som ved hjelp avThe separator in fig. 1 comprises a pool 1 which by means of

en skillevegg 2 er oppdelt i to kamre 3 og 4, idet et overlop 5 er anordnet i kammeret 3 for å tillate at de lettere komponenter som flyter på væsken i kammeret 3, kan renne bort til en avlopskanal 6. I kammeret 3 og på den skrå vegg 7 for bassenget I er det anordnet en separeringsanordning 8 av vanlig slag, ikke vist i detalj. Denne anordning omfatter et antall parallelle plater og er oventil begrenset av en skrå vegg 9. De skrå plater for denne anordning kan fortrinnsvis være korrugerte og danner separeringspassasjer som i de ovre ender står i forbindelse med kammeret 3 og med de nedre ender med kammeret 4. Sistnevnte kammer er nedentil forsynt med et oppsamlingsrom a partition wall 2 is divided into two chambers 3 and 4, an overflow 5 being arranged in the chamber 3 to allow the lighter components floating on the liquid in the chamber 3 to flow away to a drain channel 6. In the chamber 3 and on the inclined wall 7 for the pool I, a separation device 8 of the usual type, not shown in detail, is arranged. This device comprises a number of parallel plates and is limited at the top by an inclined wall 9. The inclined plates for this device can preferably be corrugated and form separation passages which are in connection with the chamber 3 at the upper ends and with the chamber 4 at the lower ends. The latter chamber is provided at the bottom with a collection chamber

10 for utfelte komponenter.10 for collapsed components.

Den skrå, ovre vegg 9 danner sammen med skilleveggen 2 en triangulær del 11 av kammeret 3. I den nedre del av dette rom II er det anordnet et tilforselsror 12 som strekker seg tvers over hele bredden av dette rom. Roret er forsynt med en sliss eller med separate åpninger gjennom hvilke væske tilfores og kan bringes inn i rommet 11. The inclined, upper wall 9, together with the partition wall 2, forms a triangular part 11 of the chamber 3. In the lower part of this room II, a supply pipe 12 is arranged which extends across the entire width of this room. The rudder is provided with a slot or with separate openings through which liquid is supplied and can be brought into the compartment 11.

Rommet 11 er forsynt med innbyrdes parallelle plater 13. Væsken som kommer fra roret 12 strommer gjennom passasjene 14 mellom disse plater 13 og oppover. På grunn av friksjonen mot platene fås det en tversgående hastighetsgradient i væsken, slik at derved dannes en hastighetsforskjell. Partiklene som er suspendert i væsken vil derved innhente hverandre og kan agglome-rere. Da tverrstromningene i passasjene 14 gradvis oker oppover, vil stromningshastigheten gradvis avta. Dette er for- The space 11 is provided with mutually parallel plates 13. The liquid coming from the rudder 12 flows through the passages 14 between these plates 13 and upwards. Due to the friction against the plates, a transverse velocity gradient is obtained in the liquid, so that a velocity difference is thereby formed. The particles that are suspended in the liquid will thereby catch up with each other and can agglomerate. As the cross currents in the passages 14 gradually increase upwards, the flow speed will gradually decrease. This is for-

I I delaktig da for en gradvis partikkelvekst ogsa „ risikoen vilI In part then for a gradual particle growth also „ the risk will

oke for at partiklene rives opp igjen av skjærkreftene mellomok for the particles to be torn up again by the shear forces between

i nærbeliggende væskesjikt. Meden redusert stromningshastighet vil denne risiko bli tilsvarende redusert. For en lavere hastighet vil oppholdstiden i denne del oke tilsvarende, hvilket for den lavere hastighetsgradient er fordelaktig. in the nearby liquid layer. With a reduced flow rate, this risk will be correspondingly reduced. For a lower speed, the residence time in this part will increase accordingly, which is advantageous for the lower speed gradient.

Platene 13 kan fortrinnsvis være korrugerte, slik som vist i fig. 2.Korrugeringene for.nærbeliggende plater er i det viste tilfelle i motfase, slik at også i stromningsretningen frem-bringes en vekslende hastighetsgradient som vil påskynde koalisens av partiklene. Når de vekslende plater forskyves omkring en halv bolgelengde blir platene bragt i fase, og en forskjellig fordeling av hastighetsgradienten vil fåes. I denne forbindelse skal det vises til patent nr. The plates 13 can preferably be corrugated, as shown in fig. 2. In the case shown, the corrugations for adjacent plates are in opposite phase, so that also in the direction of flow, an alternating velocity gradient is produced which will accelerate the coalescence of the particles. When the alternating plates are displaced by about half a wavelength, the plates are brought into phase, and a different distribution of the velocity gradient will be obtained. In this connection, reference should be made to patent no.

(ans. nr. 1677/73). (app. no. 1677/73).

Fig. 3 viser en annen anordning hvor en del av platene 13' strekker seg så langt som skråveggen 9, men ikke så hoyt som det normale væskénivå i rommet 11. De ovrige plater 13" strekker seg oppover over væskenivået, men slutter på en viss avstand fra veggen 9. De mellomliggende passasjer .14 utgjor på denne måte en vekslende oppover og nedover rettet stromnings-bane for væsken. I nærværende tilfelle finner det sted væske-tilførsel mellom de sentrale plater 13' og væsken blir så oppdelt til siden i to grener, men det*er selvsagt også mulig å anordne tilforselskamre på siden. Bredden av passasjene 14 kan gjores storre i retning mot utsiden som beskrevet i det ovenfor nevnte eldre patent, slik at det fåes en tilsvarende lavere stromningshastighet og således oppnås redusert risiko for at de sammenklumpete partikler opprives igjen. Fig. 3 shows another arrangement where part of the plates 13' extends as far as the inclined wall 9, but not as high as the normal liquid level in the room 11. The other plates 13" extend upwards above the liquid level, but end at a certain distance from the wall 9. The intermediate passages .14 thus form an alternating upward and downward directed flow path for the liquid. In the present case, liquid supply takes place between the central plates 13' and the liquid is then divided laterally into two branches, but it is of course also possible to arrange supply chambers on the side. The width of the passages 14 can be made larger in the direction towards the outside as described in the above-mentioned older patent, so that a correspondingly lower flow rate is obtained and thus a reduced risk of the clumped particles are broken up again.

Platene 13' og 13"ifolge fig. 3 er plane,.men kan også om onskes gjores korrugerte slik som vist i fig. 2. Det er også mulig å anordne hjelpeplater, på den måte som er beskrevet i det nevnte eldre patent, ved hjelp av hvilke passasjene 14 opp-deles i delpassasjer forbundet parallelt, i hvilke hastighetsgradienten er tilsvarende hoyere. Disse plater kan fortrinns vis gjores justerbare og kan være plane eller korrugerte. Platene kan videre være rettet enten parallelle med platene 13, henholdsvis 13'og 13" eller tvers på disse. The plates 13' and 13" according to Fig. 3 are flat, but can also, if desired, be made corrugated as shown in Fig. 2. It is also possible to arrange auxiliary plates, in the manner described in the aforementioned older patent, by by means of which the passages 14 are divided into sub-passages connected in parallel, in which the velocity gradient is correspondingly higher. These plates can preferably be made adjustable and can be flat or corrugated. The plates can further be directed either parallel to the plates 13, respectively 13' and 13 " or across these.

Fig. 4 viser en ytterligere utforelsesform. Istedenfor de triangulære plater ifolge fig. 3 er her plater 15' and 15" anbragt stort sett parallelt med skilleveggen 2. Platene 15' strekker seg så hoyt som skråveggen 9, men ikke over det normale væskenivå. Platene 15' 1 derimot forloper over væskeoverflaten, men er avsluttet på en viss avstand fra veggen 9. På denne måte fåes passasjer 16 som danner avvekslende oppover-og nedoverrettede stromningsbaner, og bredden av disse passasjer oker'fortrinnsvis, hvorved stromningshastigheten reduseres tilsvarende. Den siste passasje 16' er begrenset av en plate 15" og skråveggen 9 har derfor bkende bredde. Også i dette tilfelle kan det være anordnet ytterligere plater i passasjene for å oke hastighetsgradienten. Fig. 4 shows a further embodiment. Instead of the triangular plates according to fig. 3, here plates 15' and 15" are arranged largely parallel to the partition wall 2. The plates 15' extend as high as the inclined wall 9, but not above the normal liquid level. The plates 15' 1, on the other hand, run above the liquid surface, but are terminated at a certain distance from the wall 9. In this way, passages 16 are obtained which form alternating upward and downward flow paths, and the width of these passages preferably increases, whereby the flow velocity is reduced accordingly. The last passage 16' is limited by a plate 15" and the inclined wall 9 has therefore wide width. Also in this case, additional plates can be arranged in the passages to increase the speed gradient.

Den væske som strommer fra tilforselsroret 11 eller en lignende tilforsel går gjennom de forskjellige passasjer 14 eller 16, hvor, som folge av den tversgående hastighetsgradient, koalisens av de suspenderte partikler kan finne sted. Hvis disse partikler er lettere enn bærevæsken, vil en av disse flyte opp i kammeret 3 og de gjenværende partikler vil folge med væsken mot inntaket for anordningen 8. Her vil ytterligere separering av lettere komponenter finne sted, hvilke da vil stromme tilbake mot kammeret 3, og partiklene som er tyngre enn bærevæsken, vil renne bort ved den nedre ende av anordningen 8 og gå til rommet 10. Den avklarete bærevæske strommer oppover i kammeret 4 og avgår fra dette på en eller annen passende måte. The liquid flowing from the supply pipe 11 or a similar supply passes through the various passages 14 or 16, where, as a result of the transverse velocity gradient, coalescence of the suspended particles can take place. If these particles are lighter than the carrier liquid, one of these will float up into the chamber 3 and the remaining particles will follow with the liquid towards the intake for the device 8. Here further separation of lighter components will take place, which will then flow back towards the chamber 3, and the particles which are heavier than the carrier liquid will flow away at the lower end of the device 8 and go to the compartment 10. The clarified carrier liquid flows upwards in the chamber 4 and departs from this in some suitable way.

Om nodvendig kan luft (og særlig kolloidalt di'spergert luft) og/eller andre separeringspåskyndende midler innfores i den nedre ende av delen 11 nær roret 12 eller i dette. I fig. 4 er platene 15" utformet slik at de flytende komponenter llerede er separert i passasjene 16 og.vil da flyte på væsken og kan renne bort mot kammeret 3. For platene 13 og 13" kan dette finne sted uten ytterligere forholdsregler, idet disse If necessary, air (and in particular colloidally dispersed air) and/or other separation-accelerating agents can be introduced into the lower end of the part 11 near the rudder 12 or into it. In fig. 4, the plates 15" are designed so that the liquid components are already separated in the passages 16 and will then float on the liquid and can flow away towards the chamber 3. For the plates 13 and 13" this can take place without further precautions, as these

I! plater ikke forstyrrer fjernelsen av de flytende komponenter. IN! plates do not interfere with the removal of the liquid components.

Innenfor oppfinnelsens ramme er en rekke modifikasjoner mulige. Within the framework of the invention, a number of modifications are possible.

Claims

1. Separation device comprising an assembly or

a construction of superimposed parallel, preferably corrugated plates which limit separation passages, which construction is placed inclined in a pool and on the upper side is limited by an inclined wall, which pool is further divided into two chambers by means of a transverse dividing wall which is united with the underside of the inclined wall, characterized by a plate device placed in the triangular space between the transverse dividing wall and the inclined wall, between which plates mostly V<7d vertical passages are formed, and/a supply of liquid to be treated, which empties into this space in such a way that at least a vertical, upward flow of liquid is obtained between these plates, where, due to the velocity gradient caused by the plates in the structure, coalescence of the particles suspended in the liquid can take place, this happening in such a way that the liquid flow through the device can go from the upper side of the room into the upper end of the separating device.

2. Device as specified in claim 1, characterized in that the plates are largely triangular, one side of which rests against the dividing wall and the other side rests against the inclined wall.

3. Device as specified in claim 2, characterized in that the supply of liquid to be treated opens into the lower part of the triangular space and that the liquid can flow upwards in all the passages between the plates.

4. Device as stated in claims 1-3, characterized in that the plates are corrugated, the corrugations continues largely across the transverse partition.

5. Device as stated in claim 4, characterized in that every other plate is displaceable in relation to the other plates, so that the phase difference between the corrugators and the neighboring plates can be varied.

6. Device as stated in any of claims 2, 4 or 5, characterized in that a part of the plates ends at a certain distance from the inclined wall and extends above the normal liquid level, while the other plates which are united with the inclined wall do not extend as high as the liquid surface, this arrangement being such that alternating upward and downward flow passages are obtained, which are interconnected under the first and above the second plates.

7. / Device as stated in claim 1, characterized in that the plates are arranged largely parallel to the transverse side wall, with part of the plates ending at a certain distance from the inclined wall and extending above the normal liquid level, while the other plates is connected to the inclined wall, but does not extend as high as up to the liquid surface, as this results in alternating upward and downward passages which are interconnected, below the first and above the others two plates.

8. Device as specified in any of claims 1-7, characterized by largely parallel auxiliary plates arranged in one or more passages, which divide these passages into a number of sub-passages which are connected in parallel.

9. Device as stated in claim 8, characterized in that at least part of the plates are displaceable.

10. Device as stated in claim 8 or 9, charac- served by the fact that the auxiliary plates are corrugated. in !

11. Device as specified in any of claims 1 - 10, characterized by additional means for introducing air and/or other separation-accelerating means in or near the supply of liquid to be treated.