Process and arrangement for draining a liquid residue from the bottom of a tank

(19)

(11)

EP 0 839 708 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	01.12.1999 Bulletin 1999/48

(43)	Date of publication A2:
	06.05.1998 Bulletin 1998/19

(21)	Application number: 97203502.6

(22)	Date of filing: 02.11.1992

(51)	International Patent Classification (IPC)⁶: B63B 27/24, B63B 13/00

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE

(30)

Priority:

28.01.1992 NO 920380

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	93900466.9 / 0623084

(71)	Applicant: FRANK MOHN FUSA A/S
	N-5670 Fusa (NO)

(72)	Inventor:
	Oyvind, Tveit 5045 Skjoldtun (NO)

(74)	Representative: Wallin, Bo-Göran
	AWAPATENT AB, Box 5117 200 71 Malmö 200 71 Malmö (SE)


	Remarks:
	This application was filed on 11 11 97 as a divisional application to the application mentioned under INID code 62.

(54)	Process and arrangement for draining a liquid residue from the bottom of a tank

(57) A liquid residue (14) is drained from the bottom (10a) of a tank (10) via a drain pipe (15) having its open bottom intake end (13a) near the tank bottom, using a pump or ejector (16) arranged at a level substantially above the upper level of the liquid residue (14). The pump (16) or ejector establishes an upwardly directed gas/liquid current in the drain pipe (15). At distinct levels (A1, A2) above the upper surface of the liquid residue, a gas medium is sucked into the drain pipe (15) through gas inlet openings (19a, 19b) in the drain pipe wall in order to mix this gas medium with the gas/liquid current passing through the drain pipe (15).

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