RU99120397A - METHOD AND DEVICE FOR DETERMINING STABILITY OF AQUEOUS-HYDROCARBON EMULSION - Google Patents

METHOD AND DEVICE FOR DETERMINING STABILITY OF AQUEOUS-HYDROCARBON EMULSION

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Publication number
RU99120397A
RU99120397A RU99120397/28A RU99120397A RU99120397A RU 99120397 A RU99120397 A RU 99120397A RU 99120397/28 A RU99120397/28 A RU 99120397/28A RU 99120397 A RU99120397 A RU 99120397A RU 99120397 A RU99120397 A RU 99120397A
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RU
Russia
Prior art keywords
emulsion
temperature
crucible
brought
thermogravimetric
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Application number
RU99120397/28A
Other languages
Russian (ru)
Other versions
RU2189026C2 (en
Inventor
Иан ФОР
Жан-Мари ЛЕТОФФ
Филипп Шульц
Original Assignee
Елф Антар Франс
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Publication date
Priority claimed from FR9702366A external-priority patent/FR2760091B1/en
Application filed by Елф Антар Франс filed Critical Елф Антар Франс
Publication of RU99120397A publication Critical patent/RU99120397A/en
Application granted granted Critical
Publication of RU2189026C2 publication Critical patent/RU2189026C2/en

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Claims (8)

1. Способ определения стабильности водно-углеводородной эмульсии, обеспечивающий выявление разделения фаз, отличающийся тем, что на первой стадии подвергают указанную эмульсию соответствующей термической обработке, ее доводят до предварительно заданной температуры испытания и непрерывно измеряют термогравиметрически изменение наблюдаемого веса Р гравиметрического детектора, часть которого погружена в эмульсию, затем на второй стадии эмульсию выдерживают при этой температуре и в то же время непрерывно измеряют термогравиметрически изменение наблюдаемого веса указанного детектора и одновременно записывают кривую изменения этого веса и затем собирают массу выделившейся фазы, с одной стороны, и из указанной кривой определяют, с другой стороны, скорость выделения фаз, соответствующую наклону указанной кривой, главным образом скорость, замеренную при температуре разделения эмульсии, соответствующей значительному и непрерывному увеличению наблюдаемого веса Р в начале второй стадии, и определяют стабильность эмульсии путем сопоставления с известными стандартными эмульсиями, стабильность которых во времени была подтверждена путем испытаний на долговременную стабильность.1. A method for determining the stability of a water-hydrocarbon emulsion, which provides phase separation detection, characterized in that the emulsion is subjected to appropriate heat treatment at the first stage, it is brought to a predetermined test temperature, and the thermogravimetric change in the observed weight P of the gravimetric detector, part of which is immersed, is continuously measured in the emulsion, then in the second stage the emulsion is kept at this temperature and at the same time continuously measured thermogravimetric the change in the observed weight of the specified detector and at the same time record the curve of this weight and then collect the mass of the precipitated phase, on the one hand, and determine, on the other hand, the rate of phase separation corresponding to the slope of the specified curve, mainly the speed measured at the separation temperature emulsion, corresponding to a significant and continuous increase in the observed weight P at the beginning of the second stage, and determine the stability of the emulsion by comparison with known standard e emulsions whose stability over time has been confirmed by tests for long-term stability. 2. Способ по п.1, отличающийся тем, что предварительно заданная температура находится между 10 и 70oС, причем эмульсию доводят до этой температуры нагреванием или охлаждением от температуры окружающей среды со скоростью, обычно составляющей 0,05 - 10oС/мин.2. The method according to claim 1, characterized in that the predetermined temperature is between 10 and 70 o C, and the emulsion is brought to this temperature by heating or cooling from ambient temperature at a speed usually of 0.05 - 10 o C / min . 3. Способ по п.1, отличающийся тем, что предварительно заданная температура находится между температурой кристаллизации воды и температурой кристаллизации парафинов, причем первая температура выше второй, или наоборот, и эмульсию доводят до этой температуры ускоренным охлаждением, обычно со скоростью между 0,05 и 10oС/мин.3. The method according to claim 1, characterized in that the predetermined temperature is between the crystallization temperature of water and the crystallization temperature of paraffins, the first temperature being higher than the second, or vice versa, and the emulsion is brought to this temperature by accelerated cooling, usually at a speed between 0.05 and 10 o C / min. 4. Способ по п.1, отличающийся тем, что предварительно заданная температура ниже, чем температура кристаллизации парафинов и водной фазы, но выше температуры текучести смеси на основе углеводородов, и эмульсию доводят до этой температуры при охлаждении, обычно со скоростью между 0,05 и 10oС/мин.4. The method according to claim 1, characterized in that the predetermined temperature is lower than the crystallization temperature of paraffins and the aqueous phase, but higher than the pour point of the hydrocarbon-based mixture, and the emulsion is brought to this temperature with cooling, usually at a speed between 0.05 and 10 o C / min. 5. Устройство для термогравиметрического разделения эмульсии на две жидкие фазы, водную фазу и фазу на основе углеводорода, которое содержит термогравиметрические весы (1), оборудованные гравиметрическим детектором, часть которого погружена в емкость (2), содержащую указанную эмульсию в тигле (5), причем указанная емкость подсоединена к охлаждающему контуру, отличающееся тем, что тигель является свободным, предпочтительно расположен коаксиально емкости, цилиндрическое поперечное сечение которой таково, что отношение наибольшего диаметра тигля к диаметру емкости находится между 0,1 и 0,9. 5. A device for thermogravimetric separation of an emulsion into two liquid phases, an aqueous phase and a hydrocarbon-based phase, which contains a thermogravimetric balance (1) equipped with a gravimetric detector, part of which is immersed in a container (2) containing the specified emulsion in a crucible (5), moreover, the specified capacity is connected to the cooling circuit, characterized in that the crucible is free, preferably located coaxially of the capacity, the cylindrical cross section of which is such that the ratio of the largest diameter crucible to the diameter of the tank is between 0.1 and 0.9. 6. Устройство по п. 5, отличающееся тем, что тигель имеет цилиндрическую форму, содержит основание и кромки (7), высота которых находится между 5 и 30 мм и обычно равна 5 мм. 6. The device according to p. 5, characterized in that the crucible has a cylindrical shape, contains a base and edges (7), the height of which is between 5 and 30 mm and is usually equal to 5 mm. 7. Способ по любому из пп. 1-4, отличающийся тем, что он предназначен для измерения эффективности присадок, которые способствуют сохранению однородности жидкой эмульсии. 7. The method according to any one of paragraphs. 1-4, characterized in that it is designed to measure the effectiveness of additives that help maintain the uniformity of the liquid emulsion. 8. Способ по любому из пп. 1-4, отличающийся тем, что он предназначен для измерения эффективности способа получения эмульгированного топлива. 8. The method according to any one of paragraphs. 1-4, characterized in that it is intended to measure the effectiveness of the method of obtaining emulsified fuel.
RU99120397/28A 1997-02-27 1998-02-26 Method of determination of stability of water- hydrocarbon emulsion RU2189026C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9702366 1997-02-27
FR9702366A FR2760091B1 (en) 1997-02-27 1997-02-27 METHOD AND DEVICE FOR GRAVIMETRIC MEASUREMENT OF THE CHARACTERISTICS OF THE SEPARATION OF A LIQUID HYDROCARBON IN MULTIPLE PHASES

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RU99120397A true RU99120397A (en) 2001-07-27
RU2189026C2 RU2189026C2 (en) 2002-09-10

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US (2) US6076961A (en)
EP (2) EP0895586A1 (en)
JP (2) JP2001513199A (en)
KR (2) KR20000065059A (en)
CN (1) CN1113231C (en)
AT (1) ATE248362T1 (en)
AU (1) AU736589B2 (en)
BG (1) BG103710A (en)
BR (1) BR9807870A (en)
CA (1) CA2282665A1 (en)
DE (1) DE69817537D1 (en)
EE (1) EE9900374A (en)
FR (1) FR2760091B1 (en)
GE (1) GEP20022643B (en)
HU (1) HUP0001252A3 (en)
ID (1) ID22968A (en)
NZ (1) NZ337377A (en)
PL (1) PL335285A1 (en)
RU (1) RU2189026C2 (en)
SK (1) SK117299A3 (en)
TR (1) TR199902080T2 (en)
UA (1) UA48300C2 (en)
WO (2) WO1998038489A1 (en)

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