METHOD AND APPARATUS FOR THE PURIFICATION OF A TWO-COMPONENT LIQUID MIXTURE BY DISTILLATION - Patent 0456647

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EP 0 456 647 A1

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(43)	Date of publication:
	21.11.1991 Bulletin 1991/47

(21)	Application number: 90901597.0

(22)	Date of filing: 02.01.1990

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International Patent Classification (IPC):

B01D 3/ 00^{( . )}
B01D 3/ 40^{( . )}

B01D 3/ 32^{( . )}

(86)	International application number:
	PCT/FI1990/000002

(87)	International publication number:
	WO 1990/007367 (12.07.1990 Gazette 1990/16)

(84)	Designated Contracting States:
	DE ES FR GB IT

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Priority:

30.12.1988 FI 19880006052

(71)	Applicant: OY ALKO AB
	SF-00101 Helsinki (FI)

(72)	Inventors:
	LEPPÄNEN, Olavi SF-00101 Helsinki (FI) LAAKSO, Raimo SF-00101 Helsinki (FI)

(74)	Representative: Johnson, Terence Leslie, et al
	Edward Evans & Co. Chancery House 53-64 Chancery Lane London WC2A 1SD London WC2A 1SD (GB)

(54)	METHOD AND APPARATUS FOR THE PURIFICATION OF A TWO-COMPONENT LIQUID MIXTURE BY DISTILLATION