NO133959B

NO133959B -

Info

Publication number: NO133959B
Application number: NO3791/72A
Authority: NO
Inventors: G Jacob
Original assignee: Howaldtswerke Deutsche Werft
Priority date: 1971-10-30
Filing date: 1972-10-20
Publication date: 1976-04-20
Also published as: GB1400838A; IT984587B; NL151905B; FR2204439B2; DE2154182A1; JPS4852056A; NL151905C; FR2204439A2; NO133959C; DE2154182B1; NL7213554A; SE379646B; DD99931A6

Abstract

01jeutskillingsinnretning.01secretion device.

Description

Oppfinnelsen vedrører en oljeutskillingsinnret-nlng for utskilling av olje fra olje-vannblandinger, hvilken innretning består av et utskillingshus med flere utskillingskamre og hvor et avspenningskammer med et blandingsinnløp, et oljeutskillingsrom, en finutskillingsdel og en vannstandsholder med utløp er anordnet etter hverandre, og et oljesamlerom er anordnet over utskillingsromme.t. The invention relates to an oil separation device for the separation of oil from oil-water mixtures, which device consists of a separation housing with several separation chambers and where a relaxation chamber with a mixture inlet, an oil separation chamber, a fine separation part and a water level holder with an outlet are arranged one after the other, and an oil collection chamber is arranged above the separation room.t.

Ved en slik kjent utførelse blir det foran olje-utskilleinnretningen anordnet en olje-vannblandingssamler, og en skilling av blandingen i olje og vann foretas etter innfø-ringen i utskillingsinnretningen. In such a known embodiment, an oil-water mixture collector is arranged in front of the oil separation device, and a separation of the mixture into oil and water is carried out after introduction into the separation device.

For å kunne gjennomføre en virksom, hurtig og jevn. skilling av en olje-vannblanding i hele rommet i en tank som tjener til opptak av olje-vannblandingen., for å kunne mulig-gjøre en betydelig forbedring av vannets renhetsgrad, og videre for å eliminere en tilknytning av en oljeutskillingsinnretning til utløpet til en oljevannblandingsstrøm, foreslås det en oljeutskillingsinnretning som angitt i krav 1. To be able to carry out an effective, fast and smooth. separation of an oil-water mixture throughout the space in a tank which serves to absorb the oil-water mixture, in order to enable a significant improvement in the degree of purity of the water, and further to eliminate a connection of an oil separation device to the outlet of an oil-water mixture flow , an oil separation device as specified in claim 1 is proposed.

Skillingen av olje-vannblandingen beror på den spesifikke vektforskjell til de to medier. Oije-vannbiandingen strømmer med laminær strømning gjennom oljeutskillingsinnretningen. The separation of the oil-water mixture depends on the specific weight difference of the two media. The oily water mixture flows in laminar flow through the oil separation device.

Ytterligere trekk ved oppfinnelsen er angitt i Further features of the invention are indicated in

underkravene. the sub-requirements.

Oppfinnelsen skal beskrives nærmere i det etterføl-gende under henvisning til det på tegningene viste utførelsesek-sempel. The invention will be described in more detail below with reference to the embodiment shown in the drawings.

Fig. 1 viser et isometrisk riss, og fig. 2 viser et snitt gjennom en finutskillingsdel. Fig. 1 shows an isometric view, and Fig. 2 shows a section through a fine separation part.

I en tank 1 for en■olje-vannblanding er det i et felles hus 5 i et utskillingsrom 19 anordnet ved siden av hverandre liggende f inu-t stillingsdeler 6. I utskillingsrommet 19 i huset 5 munner innløp 8 for blandingen. Disse innløp er forsynt med sperre- og reguleringsventiler 21. Por føring av oljen fra oljesamlerommet 17 i huset 5 er det anordnet oljeledninger 9 som er forsynt med ventiler 22. In a tank 1 for an oil-water mixture, there are in a common housing 5 in a separation chamber 19 arranged next to each other fixed positioning parts 6. In the separation chamber 19 in the housing 5 inlet 8 opens for the mixture. These inlets are provided with shut-off and control valves 21. To guide the oil from the oil collecting chamber 17 in the housing 5, there are arranged oil lines 9 which are provided with valves 22.

Gjennom blandingsinnløpsdysene. 4 blir olje—vann-blandingen ført inn i tanken 1 gjennom innløpsrøret 2. Over .et oljeuttak 10 i den øvre delen av tanken 1 tas den utskilte olje ut. Vannet kan gå ut av tanken 1 gjennorn et renvannsutløp 14. For hel tømming er det anordnet et utløp 16 i bunnen av tanken. Lufting skjer vea hjelp av ventiler 15 øverst i tanken 1. Through the mixing inlet nozzles. 4, the oil-water mixture is introduced into the tank 1 through the inlet pipe 2. The separated oil is removed via an oil outlet 10 in the upper part of the tank 1. The water can leave the tank 1 through a clean water outlet 14. For complete emptying, an outlet 16 is arranged at the bottom of the tank. Aeration takes place via valves 15 at the top of tank 1.

Det oljeblandede vann med ulike temperaturer i tanken, hvilket vann f.eks. kan komme fra tankvasking eller være-oljetilsmusset ballastvann, vil i tanken utsettes for en sterk forutskilling. Gjennom flere innløp 8 går det allerede delvis rengjorte vann inn i utskillingsrommet 19 i huset 5 foran de av ledeplater bestående finutskillingsdele.r 16. Vannet fordeler seg jevnt mellom de enkelte ledeplater og strømmer med en mellom alle ledeplater jevn hastighet og med laminær strømning. Olje-spor i vannet i form av små dråper vil sette seg fast på under-siden av ledeplatene og samle seg til større oljedråper som, som følge av skråstillingen til finutskillingsdelene 6, vandrer frem til innløpskanten 3. Herfra stiger oljedråpene opp mot strømningsretningen tii vannet i rommet 17 og gjennom oljeled-ningsrørene 9 opp og inn i den.øvre del av tanken. Herfra kan den utskilte olje tas ut gjennom e.tt eller flere oljeutløp 10. - Dette oljeutløp kan også styres automatisk ved hjelp av en flottørstyrt pneumatisk ventil. The oil-mixed water with different temperatures in the tank, which water e.g. can come from tank washing or oil-contaminated ballast water, will be exposed to a strong pre-separation in the tank. Through several inlets 8, the already partially cleaned water enters the separation space 19 in the housing 5 in front of the fine separation parts 16 consisting of guide plates. The water is distributed evenly between the individual guide plates and flows with a uniform speed between all guide plates and with laminar flow. Oil traces in the water in the form of small droplets will stick to the underside of the guide plates and collect into larger oil droplets which, as a result of the slanted position of the fine separation parts 6, migrate to the inlet edge 3. From here the oil droplets rise towards the direction of flow in the water in the room 17 and through the oil line pipes 9 up and into the upper part of the tank. From here, the separated oil can be taken out through one or more oil outlets 10. - This oil outlet can also be controlled automatically using a float-controlled pneumatic valve.

Etter at vannet har passert finutskillingsdelene 6, går det under veggen 11 og over overløpskanten 12 og inn i • " renvannskammeret 13. Renvannskammeret 13 er adskilt fra tanken 1 og rommet i huset 5 ved hjelp av en ramme 7. Det rene vann strømmer gjennom renvannsutløpet.14. After the water has passed the fine separation parts 6, it goes under the wall 11 and over the overflow edge 12 and into the clean water chamber 13. The clean water chamber 13 is separated from the tank 1 and the room in the house 5 by means of a frame 7. The clean water flows through the clean water outlet .14.

Hele oljeutskillingsinnretningen er trykkløs da den står i forbindelse med atmosfæren gjennom lufteåpningene 15. Etter endt utskilling og etter noen timers standtid kan det i tanken 1 gjenblivende vann tappes forsiktig ut gjennom utløpet 16, etter at ventilene 21 og ventilene 22 er lukket. Når vannet er fjernet, kan tanken 1, f.eks. ved tankskip, benyttes som lastetank. The entire oil separation device is depressurized as it is in contact with the atmosphere through the air openings 15. After the end of separation and after a few hours of standing time, the remaining water in the tank 1 can be carefully drained out through the outlet 16, after the valves 21 and valves 22 have been closed. When the water has been removed, the tank 1, e.g. in the case of tankers, used as a cargo tank.

Blandingsinnløpsdysene 4 tjener til jevn fordeling av oljevannblandingen på blandingsinnløpene 8. Det er fordelak-tig å ha et blandingsinnløp for hver blandingsinnløpsdj^se. The mixing inlet nozzles 4 serve to evenly distribute the oil-water mixture on the mixing inlets 8. It is advantageous to have a mixing inlet for each mixing inlet nozzle.

Finutskillingsdelene 6 er fortrinnsvis anordnet i et felles hus. De enkelte finutskillingsdeler kan også være opp-delt i enkeltkamre. The fine separation parts 6 are preferably arranged in a common housing. The individual fine separation parts can also be divided into individual chambers.

Mellom de enkelte ledeplater dannes det utskillingsrom. Ledeplatene er ved utløpskantene 20 trinnvis forskjellig avkantet og har mer eller mindre innsnevrede utløpstverrsnitt for å få en lik laminær strømning i utskillingsrommene. Blandingen som ledes inn foran finutskillingsdelene 6 gjennom blan-dingsinnløpene 8, fordeler seg jevnt på de enkelte utskillingsrom og strømmer med jevn laminær strømning gjennom alle kamre. A separation space is formed between the individual guide plates. At the outlet edges 20, the guide plates are bevelled in different steps and have more or less narrowed outlet cross-sections in order to obtain an equal laminar flow in the separation spaces. The mixture which is introduced in front of the fine separation parts 6 through the mixing inlets 8, is distributed evenly in the individual separation chambers and flows with a uniform laminar flow through all chambers.

Både tanken 1 såvel som oljesamlerommet 18 kan være forsynt med en oppvarmingsinnretning, f.eks. en dampdrevet oppvarmingsinnretning, eller en væskeoppvarmingsinnretning. Both the tank 1 as well as the oil collection chamber 18 can be provided with a heating device, e.g. a steam powered heating device, or a liquid heating device.

Claims

1. Oil separation device for separating oil from oil-water mixtures, which device consists of a separation housing with several separation chambers, and where a relaxation chamber with a mixture inlet, an oil separation chamber, a fine separation part and a water level holder with an outlet are arranged one after the other and an oil collection chamber is arranged above the separation chamber, characterized in that the oil separation device comprises a tank (1), the lower part of which has several side-by-side fine separation parts (6) arranged in a housing (5), whose separation chamber (19) is connected to the tank (1) by means of inlet (8), and that an oil collection chamber (17) in the upper part of the housing (5) is connected by means of oil lines (9) to an oil collection chamber ( 18) in the tank (l), and that the tank (1) has another number of fine separation parts (6) corresponding to the number of inlet nozzles (4) assigned to the fine separation parts (6).

2. Oil separation device according to claim 1, characterized in that partitions are arranged in the housing (5) between the fine separation parts (6) and that each thus formed fine separation chamber has an inlet (8) and an oil line (9) to cljesarr.leroir.met (lS).

3. Oil separation device according to claims 1 and 2, characterized in that each inlet (8). can be closed and regulated, with the help of suitable organs (21).

4. Oil separation device according to claims 1-3* tank, characterized by the fact that the tank (1) is designed as a collection container for an oil-water mixture where the upper part (1S) is designed serr. is: -f crrådbehoider for . secreted, oil .

5.. Oil separation device according to claims 1 - 4. characterized in that the tank (1), at least ■ in its upper part, has several oil outlets (10).

6. Oil separation device according to claims 1 - 5, characterized in that the collecting space (18) is. provided with a heating device.

7. Oil separation device according to claims 1-6, characterized by: a-t the oil lines (9) have. locking device (22).