Apparatus for collecting and separating aqueous and/or oily liquids from cryogenic liquids

Abstract

The invention relates to a device (1) for collecting and separating aqueous and / or oily liquids (3) and cryogenic liquids (4), such as LNG, comprising: a) a first container (1-1), having a bottom wall (1c) pierced by a first tubular discharge duct (1e) opening in the first storage tank (1-3); and b) contained within said first container A second container (1-2) comprising: a bottom wall (2b) located above the level of said first discharge duct (1e); and comprising at its base communicating with a transverse channel (5) the top side wall (2a) of at least one discharge port (2d); and the bottom side wall (2c) extending below the level of the top end (1e1) of said first discharge pipe (1e); said transverse channel (5) between said side walls (1b, 2a-2c) of the container; and c) at least one liquid collector line (1a) opening in said second container, and a second A discharge pipe (1f) extends from above the second container (1-2) and opens in the second LNG storage tank (1-4).

Description

technical field [0001] The present invention relates to a device for collecting and separating water phase and / or oil phase liquid and cryogenic liquid, preferably liquefied gas, such as LNG (Liquefied Natural Gas), which device is also referred to below as " Splitter". [0002] The present invention more particularly relates to a separator for separating contaminating fluids such as run-off water, oil or actually any other industrial liquid. [0003] The invention relates more particularly to a separator which is mounted on a support which is installed in the sea (in the high seas or e.g. protected area), the support includes means for handling hazardous and / or corrosive liquids, preferably liquefied natural gas (LNG), in the on the deck of the pedestal, and the pedestal also includes at least one storage tank for storing the liquid and contained within the hull of the pedestal below the deck. Background technique [0004] This type of support can be, inter alia, a floa...

AI Technical Summary

Problems solved by technology

Such special steels are very expensive and usually they are not used for support elements or structures for FPSOs, which are usually made of ordinary steel

However, such common steels become brittle when exposed to very low temperatures and lose their mechanical strength, so there is a risk of fracture of structural elements and in the event of a major leak directly onto said deck, unless critical The parts are protected by insulating material which itself can withstand low temperatures very well, otherwise it may even break the deck of the FPSO

[0016] 3) Since cold LNG (-165°C) is suddenly heated by seawater in the temperature range of 10°C to 20°C, and is heated in the presence of air (and thus in the presence of oxygen), the Sudden contact between LNG and sea water is very dangerous and also leads to a very high risk of immediate explosion

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