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RO118438B1 - Demulsifier for treating the crude oils - Google Patents

Demulsifier for treating the crude oils Download PDF

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Publication number
RO118438B1
RO118438B1 RO14512990A RO14512990A RO118438B1 RO 118438 B1 RO118438 B1 RO 118438B1 RO 14512990 A RO14512990 A RO 14512990A RO 14512990 A RO14512990 A RO 14512990A RO 118438 B1 RO118438 B1 RO 118438B1
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RO
Romania
Prior art keywords
water
petroleum
emulsion
oil
treating
Prior art date
Application number
RO14512990A
Other languages
Romanian (ro)
Inventor
Iuliu Marius Cucuiat
Gheorghe Zamfirescu
Original Assignee
Inst De Cercetari Si Pproiecta
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inst De Cercetari Si Pproiecta filed Critical Inst De Cercetari Si Pproiecta
Priority to RO14512990A priority Critical patent/RO118438B1/en
Publication of RO118438B1 publication Critical patent/RO118438B1/en

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  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention relates to a demulsifier for treating the crude oils, meant especially for treating the paraffinous oils with a high freezing point. According to the invention, the demulsifier comprises a ratio of about 50% of a cationic product with a superficial activity, which preferentially irrigates the petroleum stage, and about 50% of an anionic product with a superficial activity, which preferentially irrigates the aqueous stage, so that, after the products reach to the petroleum-water interface of the natural emulsion of water in petroleum, there is produced a significant decrease of the petroleum-water interface stress and, by that, the emulsion breaking by coalescence and the formation of big water drops which settle down, finally there being obtained petroleum with water under 1% vol. and the formation water separated from the initial emulsion.

Description

Invenția se referă la un dezemulsionant pentru tratarea țițeiurilor brute destinat în special, tratării unor țițeiuri parafinoase cu puncte de congelare ridicate.The invention relates to a desemulsifier for the treatment of crude crude oils, in particular intended for the treatment of paraffinic crude oils with high freezing points.

Sunt cunoscute multe tipuri de dezemulsionanți, anionici, cationici, neionici utilizați pentru tratarea țițeiurilor însă în cazul unor țițeiuri parafinoase cu puncte de congelare ridi5 cate acești dezemulsionanți nu asigură separarea apei de țiței, respectiv tratarea corespunzătoare a țițeiului (sub 1% voi. apă).Many types of de-emulsifiers, anionic, cationic, non-ionic are used to treat crude oil, but in the case of paraffinic crude oil with high freezing points5, these demulsifiers do not ensure the separation of crude water, respectively the proper treatment of crude oil (below 1%). .

Problema tehnică, pe care o rezolvă invenția, constă în realizarea unui dezemulsionant care să asigure separarea apei de țiței și la țițeiuri parafinoase brute cu puncte de congelare ridicate.The technical problem, which is solved by the invention, consists in the development of a demulsifier that ensures the separation of water from crude oil and paraffin crude oil with high freezing points.

Invenția înlătură dezavantajele menționate prin aceea că dezemulsionantul este compus dintr-un produs cu activitate superficială cationic care udă preferențial faza de țiței, precum și dintr-un produs cu activitate superficială anionic care udă preferențial faza apoasă, astfel ca după ce produsele ajung la interfața țiței-apă a emulsiei naturale de apă în țiței se produce și micșorare semnificativă a tensiunii interfaciale țiței-apă și prin aceasta separarea emulsiei prin coalescență și formarea picăturilor mari de apă care se decantează în timp și la temperatură.The invention removes the disadvantages of the fact that the desemulsifier is composed of a cationic surface activity product which preferentially wets the oil phase, as well as an anionic surface activity product which preferentially water the aqueous phase, such that after the products reach the oil interface - water of the natural emulsion of water in crude oil also produces a significant reduction of the interfacial tension of crude oil-water and thus the separation of the emulsion by coalescence and the formation of large drops of water that decant in time and at temperature.

Se dă, în continuare, un exemplu de realizare a invenției.The following is an example of an embodiment of the invention.

Conform invenției, la 1 m3 emulsie a unui țiței parafinos lent, țiței cu punct de congelare de - 29°C și densitate 870 kg/m3, care conține circa 50% voi. apă se adaugă 125 g agent activ de suprafață cationic de tip amină cuaternară cu un radical alchil având 8...24 atomi de carbon, precum și 125 g agent activ de suprafață anionic de tip sulfonat de petrol sau alcooli superiori cu 8...16 atomi de carbon sulfatați. La o temperatură de tratare de 60°C după circa 2 h de decantare se obține circa 5001 țiței cu apă sub 1% voi. și circa 5001 apă de zăcământ separată din emulsia inițială de țiței brut.According to the invention, at 1 m 3 emulsion of a slow paraffin crude oil, the crude oil with a freezing point of - 29 ° C and a density of 870 kg / m 3 , which contains about 50% vol. water is added 125 g of a cationic quaternary amine surfactant with an alkyl radical having 8 ... 24 carbon atoms, as well as 125 g of anionic surfactant of petroleum sulphonate or higher alcohols of 8 ... 16 sulfated carbon atoms. At a treatment temperature of 60 ° C after about 2 hours of decantation, approximately 5001 crude oils are obtained with water below 1% vol. and about 5001 reservoir water separated from the initial crude oil emulsion.

Dezemulsionantul, conform invenției, prezintă următoarele avantaje.The desemulsifier according to the invention has the following advantages.

- dezemulsionează în special țițeiuri brute parafinoase cu punct ridicat de congelare,- especially emulsifies crude paraffin crude oil with high freezing point,

- necesită consumsuri specifice relativ mici;- requires relatively low specific consumption;

- permite obținerea de țiței curat, cu sub 1% voi. apă.- allows to obtain clean crude oil, with less than 1% you. the water.

Claims (1)

30 Revendicare30 Claim Dezemulsionant pentru tratarea țițeiurilor brute în special a celor parafinoase, cu puncte de congelare ridicate, caracterizat prin aceea că este compus în proporție de circa 50% dintr-un produs cu activitate superficială de tip cationic care udă preferențial faza deDesemulsifier for treating crude oil especially paraffin oil, with high freezing points, characterized in that it is composed of about 50% of a product with a cationic surface activity which preferably water the phase of 35 țiței și circa 50% dintr-un produs cu activitate superficială de tip anionic care udă preferențial faza apoasă, astfel că după ce produsele ajung la interfața țiței-apă a emulsiei naturale de apă în țiței se produce o micșorare semnificativă a tensiunii interfacială țiței apă și prin aceasta spargerea emulsiei prin coalescență și formarea picăturilor mari de apă care se decantează.35 oil and about 50% of an anionic surface activity product which preferentially water the aqueous phase, so that after the products reach the oil-water interface of the natural water emulsion in the crude oil a significant decrease of the interfacial tension of the water oil occurs and by this the breaking of the emulsion by coalescence and the formation of large drops of water that decant.
RO14512990A 1990-05-21 1990-05-21 Demulsifier for treating the crude oils RO118438B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO14512990A RO118438B1 (en) 1990-05-21 1990-05-21 Demulsifier for treating the crude oils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO14512990A RO118438B1 (en) 1990-05-21 1990-05-21 Demulsifier for treating the crude oils

Publications (1)

Publication Number Publication Date
RO118438B1 true RO118438B1 (en) 2003-05-30

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RO14512990A RO118438B1 (en) 1990-05-21 1990-05-21 Demulsifier for treating the crude oils

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2555845A1 (en) * 2010-04-08 2013-02-13 William Marsh Rice University Recovery and separation of crude oil and water from emulsions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2555845A1 (en) * 2010-04-08 2013-02-13 William Marsh Rice University Recovery and separation of crude oil and water from emulsions
EP2555845A4 (en) * 2010-04-08 2014-04-23 Univ Rice William M Recovery and separation of crude oil and water from emulsions

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