EP 0763077 A1 19970319 - METHOD FOR SEPARATING WATER FROM CRUDE OIL AND PETROLEUM EMULSION CRACKING AGENT USED THEREIN
Title (en)
METHOD FOR SEPARATING WATER FROM CRUDE OIL AND PETROLEUM EMULSION CRACKING AGENT USED THEREIN
Title (de)
VERFAHREN ZUR ABTRENNUNG VON WASSER AUS ROHÖL UND HIERBEI VERWENDETE ERDÖLEMULSIONSSPALTER
Title (fr)
PROCEDE PERMETTANT DE SEPARER L'EAU DU PETROLE BRUT ET AGENT DE CRAQUAGE D'EMULSION D'HUILE BRUTE UTILISE A CET EFFET
Publication
Application
Priority
- DE 4418800 A 19940530
- EP 9501901 W 19950519
Abstract (en)
[origin: US5759409A] PCT No. PCT/EP95/01901 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed May 19, 1995 PCT Pub. No. WO95/33018 PCT Pub. Date Dec. 7, 1995Water is separated from crude oil by a process in which the oil demulsifier used is a mixture of A) compounds which have demulsifying activity and are of the structure type of the (a) polyethyleneimine alkoxylate, (b) mono- or oligoamine alkoxylate, (c) alkoxylated alkylphenol/formaldehyde resins, (d) alkoxylated amine-modified alkylphenol/formaldehyde resins, (e) co- or terpolymers of alkoxylated acrylates or methacrylates with vinyl compounds, (f) condensates of mono- or oligoamine alkoxylates, dicarboxylic acids and alkylene oxide block copolymers, where these condensates may furthermore be completely or partially quaternized at the nitrogen atoms, or (g) compounds (a) to (f) reacted with crosslinking agents and B) as a demulsifying assistant, a polyalkylene glycol ether which has no demulsifying activity and is of the general formula I or IIR1[(OA1)a-OH]n(I)H-(OA1)b-(OA2)c-(OA3)d-OH(II)where R1 is a monovalent to decavalent C1-C20 alkyl group, phenyl group or alkylphenyl group where the alkyl radical is of 1 to 20 carbon atoms, A1 to A3 are each a 1,2-alkylene group of 2 to 4 carbon atoms or a phenylethylene group, n is from 1 to 10, a is from 1 to 50 and b, c and d are each from 0 to 50, the sum b+c+d being greater than 3.
IPC 1-7
IPC 8 full level
B01D 17/04 (2006.01); B01D 17/05 (2006.01); C10G 33/04 (2006.01)
CPC (source: EP US)
B01D 17/047 (2013.01 - EP US); C10G 33/04 (2013.01 - EP US)
Citation (search report)
See references of WO 9533018A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5759409 A 19980602; DE 4418800 A1 19951207; EP 0763077 A1 19970319; NO 965114 D0 19961129; NO 965114 L 19961202; WO 9533018 A1 19951207
DOCDB simple family (application)
US 73792596 A 19961202; DE 4418800 A 19940530; EP 9501901 W 19950519; EP 95920064 A 19950519; NO 965114 A 19961129