Processing

Please wait...

Settings

Settings

Goto Application

1. EP0047758 - METHOD OF AND APPARATUS FOR COMBATTING WATER-BORNE POLLUTION

Office
European Patent Office
Application Number 81900643
Application Date 19.03.1981
Publication Number 0047758
Publication Date 24.03.1982
Publication Kind B1
IPC
B05B 1/34
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
1Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
34designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
E02B 15/04
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
BHYDRAULIC ENGINEERING
15Cleaning or keeping clear the surface of open water; Apparatus therefor
04Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
CPC
B05B 1/3426
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
1Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
34designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
3405to produce swirl
341before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
3421with channels emerging substantially tangentially in the swirl chamber
3426the channels emerging in the swirl chamber perpendicularly to the outlet axis
E02B 15/041
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
BHYDRAULIC ENGINEERING
15Cleaning or keeping clear the surface of open water; Apparatus therefor
04Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
041Devices for distributing materials, e.g. absorbed or magnetic particles over a surface of open water to remove the oil, with or without means for picking up the treated oil
Y02A 20/204
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
20Water conservation; Efficient water supply; Efficient water use
20Controlling water pollution; Waste water treatment
204Keeping clear the surface of open water from oil spills
Applicants DELAVAN LIMITED
Inventors PERCIVAL, DAVID ROBERT
SHELDON, WILLIAM
Designated States
Priority Data 8009486 20.03.1980 GB
Title
(DE) VERFAHREN UND VORRICHTUNG ZUM BEKÄMPFEN AUF DEM WASSER SCHWIMMENDER VERUNREINIGUNGEN.
(EN) METHOD OF AND APPARATUS FOR COMBATTING WATER-BORNE POLLUTION
(FR) PROCEDE ET APPAREIL POUR COMBATTRE LA POLLUTION DANS L'EAU.
Abstract
(EN)
Method and apparatus for combatting water-borne oil pollution, such as an oil slick, by spraying the polluted region with an oil-dispersant composition from one or more double swirl chamber nozzles (12). Such a nozzle has a primary swirl chamber into which the liquid to be sprayed is introduced tangentially to swirl therein. The primary swirl chamber terminates in a primary orifice constituting the entry to a secondary swirl chamber in which the swirling motion of the droplets produced in the primary chamber is slowed down and the droplets agglomerate. The droplets leaving the double swirl chamber nozzles are of larger droplet size and narrower droplet size distribution than the droplets leaving a conventional nozzle. The spray produced by the double swirl chamber nozzles is less susceptible to drift and more certain coverage of the polluted area can be achieved. The apparatus may be mounted on an air-borne vehicle or a water-borne vehicle such as a tug, and, in the latter case, may include a plurality of conventional nozzles (23) for spraying with water the polluted region already sprayed by the double swirl chamber nozzle(s) (12), thereby to agitate the region and mix the dispersant with the pollution.

(FR)
Procede et appareil destines a combattre la pollution du petrole dans l"eau, telle qu"une nappe de petrole, en aspergeant la region polluee avec une composition de dispersion du petrole a l"aide d"un ou de plusieurs ajutages a chambre de tourbillon double (12). Un tel ajutage possede une premiere chambre a tourbillon dans laquelle le liquide a asperger est introduit tangentiellement pour tourbillonner a l"interieur. La premiere chambre a tourbillon se termine en un premier orifice constituant l"entree d"une seconde chambre a tourbillon dans laquelle le mouvement de tourbillonnement des gouttes produit dans la premiere chambre est ralenti pour permettre aux gouttes de s"agglomerer. Les gouttes quittant les ajutages a double chambres a tourbillon sont distribuees suivant une plus grande dimension de gouttes et une dimension plus etroite des gouttes que celle des gouttes sortant d"un ajutage conventionnel. L"atomisation produite par les ajutages a double chambres a tourbillon est moins susceptible de deriver et on peut obtenir une meilleure ouverture de la zone polluee. L"appareil peut etre monte sur un vehicule aeroporte ou un vehicule marin tel qu"un remorqueur et, dans ce dernier cas, peut comprendre une pluralite de lances ou ajutages conventionnels (23) pour arroser avec de l"eau la region polluee deja aspergee par les lances ou ajutages a double chambres a tourbillon (12), de maniere a agiter la region et melanger le produit de dispersion avec le milieu pollue.

Also published as
NO19813889