WO2011110585A1 - Method for regenerating hydrocarbon filler - Google Patents

Method for regenerating hydrocarbon filler

Info

Publication number
WO2011110585A1
WO2011110585A1 PCT/EP2011/053521 EP2011053521W WO2011110585A1 WO 2011110585 A1 WO2011110585 A1 WO 2011110585A1 EP 2011053521 W EP2011053521 W EP 2011053521W WO 2011110585 A1 WO2011110585 A1 WO 2011110585A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
step
oil
method
additives
filtration
Prior art date
Application number
PCT/EP2011/053521
Other languages
French (fr)
Inventor
Luc Schrive
Aurélien LEDIEU
Frédéric Barth
Dominique Rio
Original Assignee
Commissariat A L'energie Atomique Et Aux Energies Alternatives
Societe De Conception D'equipements Pour L'environnement Et L'industrie (Sc2Ei)
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G31/00Refining of hydrocarbon oils in the absence of hydrogen, by methods not otherwise provided for
    • C10G31/09Refining of hydrocarbon oils in the absence of hydrogen, by methods not otherwise provided for by filtration
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G25/00Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • C10G25/006Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents of waste oils, e.g. PCB's containing oils
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0008Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0058Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10Feedstock materials
    • C10G2300/1003Waste materials
    • C10G2300/1007Used oils
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2240/00Specified uses or applications of lubricating compositions
    • C10N2240/10Internal-combustion engines

Abstract

The invention relates to a method for regenerating a hydrocarbon filler including one or more dispersant additives, said method including the following steps: a) a step of placing said filler in contact with at least one agent for aggregating said dispersant additive(s), by means of which a filler including aggregates of said dispersant additive(s) is produced; b) a step of passing the filler produced from step a) over a filter retaining said aggregates.

Description

REGENERATION METHOD OF HYDROCARBON CHARGE

DESCRIPTION

TECHNICAL AREA

The present invention relates to a process for regenerating a hydrocarbon feedstock employing a filtration pretreatment step prior to said hydrocarbon feed.

This process is, in particular, its application in the treatment of waste oils such as engine oils, especially to regenerate them for reuse. This type of treatment is commonly referred to as "re-refining waste oil."

The field of the invention is that the regeneration of hydrocarbon feedstocks such as used motor oils.

STATE OF THE ART

An oil is conventionally a hydrocarbon mixture, which may be associated with various additives to enhance the intrinsic properties of this oil or give it some additional properties for a particular use.

Among the additives commonly used in oils, particularly in engine oils include:

antioxidant additives having the function to slow the phenomena of oxidation of the oil and thus lengthen its lifetime; detergent additives having the function of keeping clean the parts intended to be in contact with said oil;

- dispersant additives which are used for suspending oil solid impurities

(Such as soot, dust, wear metals) formed, for example, in engine oils;

- antiwear additives contributing to form a protective film on the surfaces of the parts in contact with said oil;

rust inhibitors, additives for improving the viscosity index or anti-foam additives ... etc.

Oils, when used, are subjected to stresses which will cause the degradation thereof, which is materialized by an increase in the contaminant elements rate of said oils, such contaminants derived from,

* Degradation of the above additives, additives such as antioxidants, anti-wear agents;

* External pollutants and wear metals from, for example, parts with which the oil is in contact during use;

Fuel fractions * (such as diesel or gasoline) more or less oxidized and / or thermally cracked in liquid or solid form

(Which thus form soot).

It follows a polluted oil and has a stronger color than the initial clean oil, hence the name black oils in the area of ​​used motor oil, the black color is mainly due to the presence of oxide fuels and / or thermally cracked.

In order to be reusable, the oil must be stripped of its contaminants and, to this end, is caused to undergo generally clearance operations transposed conventional refinery operations, such as:

* A primary treatment for removing suspended solids in the waste oil, which treatment is conventionally performed by filtration or decantation;

* Separation operations pollutant compounds dissolved in the waste oil, for example, by distillation, after which it is obtained a fraction recoverable more or less colored close Sought base oil;

* Finishing operations, primarily to obtain a bleached oil, for example, by adsorption of said oils on activated bleaching earths or by catalytic hydrogenation.

Filtering a waste oil can be conventionally carried out by tangential flow filtration, which comprises passing the oil tangentially to the surface of the filter. The oil passes through the filter through the pressure it exerts on the latter, while the colloidal or solid unwanted elements present in the waste oil remain my oritairement in the tangential flow of traffic, thus causing clogging of the lower filter would be achieved if the oil was filtered by dead-end filtration.

However, given the high viscosity of the oils, the flow rate of oil through the filter porosity is thereby lessened compared with liquids whose viscosity is close to or identical to that of the water, which impairs the filtration efficiency.

To overcome this disadvantage, various solutions have been proposed in the literature to filter a viscous liquid, such as oil.

One solution is, for example, to increase the temperature of the liquid to be filtered in order to lower the viscosity as proposed in document FR 2 482 975. More specifically, the processing method described in this document consists in passing on a filter mineral ultrafiltration liquid to be treated, and at a temperature above 100 ° C, e.g., up to 350 ° C.

However, this type of process has the following disadvantages:

a very high operating temperature, which requires caution because of the risk of flammability of the product to be treated;

- the mechanical stresses applied to ceramic membranes, these stresses being caused by the differential expansion of the constituent material of the membranes by the difference of temperature induced by the heating between the start thereof and stopping thereof; and - an oxidation phenomenon of components of the used oil feedstock contributing to make, in particular, more viscous.

Another solution is to add oil to be treated, an adjuvant that will allow to reduce the viscosity of the liquid to be filtered.

This adjuvant may be a liquid organic solvent such as hexane, heptane or any other organic solvent miscible with oil as described in FR 2453211 or could also be a supercritical fluid such as supercritical carbon dioxide, as described in WO 00/52118.

However, these embodiments result in a high probability of passage of undesirable elements into the filtrate through the filter, which is inconvenient for the quality of the recovered filtrate.

There is thus a need for a process for regenerating a hydrocarbon feedstock by filtration which would reduce the passage through the filter contained undesirable elements in this load.

STATEMENT OF INVENTION

The inventors have discovered, surprisingly, that by treating appropriately, before filtration, the hydrocarbon feedstock, it is possible to substantially reduce the passage of contaminants through the filter, no matter the filtration mode involved. Thus, the invention relates to a process for regenerating a hydrocarbon feed comprising one or more dispersant additives, said method comprising the steps of:

a) a step of contacting said feedstock with at least an aggregating agent or said dispersant additives, whereby one obtains a feed comprising aggregates or said dispersant additives;

b) a step of passing the filler obtained after step a) on a filter retaining said aggregates.

Before going further in this description, we specify the following definitions.

By hydrocarbonaceous feed is meant a feedstock comprising one or more hydrocarbons and optionally one or more compounds which, in addition to carbon atoms and hydrogen atoms, may contain heteroatoms. In particular, the hydrocarbon feedstock is preferably a liquid hydrocarbon feedstock, at least in the operating conditions of implementation of the above mentioned removal process.

By aggregating agent is meant an agent capable of generating or coalescence of said dispersant additives, whereby it forms aggregates of said dispersant additives (e.g., in the form of particles or colloids) that will be retained by the filter .

Thus, the method of the invention, through the use of an aggregating agent or said dispersant additives removed before filtration, allows to obtain a hydrocarbon feed comprising suspension of aggregates of said dispersant additives, which aggregates will be readily retained on the filter while the filtrate will thus be a hydrocarbon feedstock depleted in whole or part, on or dispersing additives.

Such dispersing agents are typically organic compounds comprising a polar portion and a lipophilic portion, which serve to suspend in the hydrocarbon feedstock solids or colloidal elements such as dust, soot, wear metals, solid residues colloidal or oxidation, so as to prevent the solid or colloidal elements from agglomerating and thus avoid the formation of deposits.

There may be mentioned as examples of dispersing additives alkenylsuccinimides compounds such as those corresponding to the following formula:

R representing a hydrocarbon group.

Can also be mentioned as examples of dispersant additives of the type compounds "Mannich base", such as those corresponding to the following formula:

wherein R is an alkyl group.

In a hydrocarbon feedstock, such as a waste oil, the dispersant additives will allow to ensure the individualization of the above, which will be able to pass through the filter over which the hydrocarbon feed, which affects the filtration performance.

According to the invention, by adding, before the filtration step, an aggregation agent of said dispersant additives, thus form an aggregate of said dispersant additives which also includes the individual compounds dispersed in the feed prior to introduction of the agent aggregation.

The introduction of an aggregating agent of said dispersant additives has the following interest:

- it allows, by formation of aggregates capable of being retained by a filter, the subsequent filtering off the dispersant additives, which do not exhibit an optimal dispersion efficiency, because they already contribute to the dispersion of external pollutants generated during the use of the load; it allows, concomitantly, the elimination of external pollutants (i.e. elements not derived from the originally used filler, such as soot, metal elements from wear parts with which the hydrocarbon feedstock is contacted during its use) and initalement additives present in the unworn charge, these additives can be in any partially degraded after use of this filler, such as detergent additives, anti-wear additives, which external additives are embedded and pollutants in the formation of the aggregate with the dispersant additives which they were originally attached;

adding an aggregation agent dispersant additives does not cause or little decrease of the filtrate flow through the filter during the filtration step.

Without being bound by any theory, the aggregating agent of said dispersant additives will be considered by the latter as a pollutant to be dispersed, which will contribute to the saturation dispersive functions of these additives until the appearance of aggregates having a size such that they will be retained by the filter involved in the subsequent filtration step.

Aggregating agents dispersing additives may be chosen from:

solid compounds, such as powders;

- liquid compounds;

- pasty compounds; and - mixtures thereof.

Examples of powders include absorbent land, ceramic oxides such as alumina, activated carbon.

The solid compounds can also be in the form of organic salts or inorganic salts (such as sodium salts, potassium salts, ammonium salts).

As examples of liquid compounds include organic solvents miscible in all or part with the hydrocarbon feedstock to be treated.

Examples of pasty compounds include tar, bitumen, or more generally distillation residues.

The aggregating agents may be added to the hydrocarbon feedstock to be treated in an amount of 0.1 to 20% by weight based on the total weight of the filler, preferably from 0.25 to 10% and even more preferably from 0 , 5-5% by weight.

The hydrocarbon feedstock processed according to this method may be in particular an oil, such as waste oil, which may be either an organic oil as mineral oil.

May be mentioned as organic oils, vegetable oils or animal organic organic oils.

Organic plant oils may be selected from triglyceride oils, such as sunflower oil, peanut oil, rapeseed oil, corn oil, olive oil, of copra, palm oil and non triglyceride oils, such as jojoba oil.

Animal organic oils can be chosen from fish oils, marine mammals, land mammals, such as beef oil, pork or mutton.

As for mineral oils, it may be mineral oils from the fractional distillation of crude oil, in particular, black waste oils such as rolling or motor oils.

Once the contacting of step a) carried out, the method of the invention comprises a charging step of passing thus treated through a filter which will retain the aggregates and thus allow to isolate a filtrate freed of said aggregates.

This step can be performed:

* By frontal filtration, which means that the feed stream from step a) meeting perpendicular to its path filter which will retain all particles, including aggregates formed during step a), having a diameter greater than the average mesh size of said filter; or

* By tangential filtration, which means that the feed stream from step a) flows parallel to the filter surface.

The filter may be a membrane based on metals or metal alloys (such as optionally stainless steel, nickel), oxides such as oxides selected from Al2O3, ZrC> 2, TiC> 2. It can be adapted to retain particles having an average particle size (that is to say, the average diameter of particles) is between 1 nm and 10 pm, preferably between 2 nm and 1 micron and more preferably between 2 nm and 0.1 pm.

The filtration step, especially when the filtration is tangential, may be assisted by a supercritical fluid, which means, in other words, the load before the filtration step b) is contacted with a fluid in the supercritical state, this contacting step being carried out before, simultaneously and / or subsequently to step a).

The fluid in the supercritical state can be selected from C0 2, N 2 0, SF 6, preferably CO 2, particularly when it comes to treating an oil, such as used motor oil.

It may also act alkane placed in a supercritical state, such as methane, ethane, propane, butane in its various isomers, pentane in its various isomeric forms, hexane in its various isomeric forms and heptane in its various isomeric forms.

The advantage of using a fluid in the supercritical state is to reduce the viscosity of the feed to be treated and thus facilitate its filtration after formation of aggregates.

The method of the invention can be implemented continuously or else discontinuously, that is say batch ( "batch"). In the latter case, the contacting step with an agent aggregation is implemented once with the whole volume of feed to be treated, said volume being then subjected entirely at once to the filtration step . This mode is particularly useful for high value products, available in small quantities and for which continuous operation is not suitable.

The method of the invention can be carried out in an installation comprising at least:

* A unit (such as a tank), wherein the contacting step a) is implemented;

* A filtration unit connected to said unit as mentioned above; and

* A retentate collection unit and a permeate collection unit both connected to the filtration unit.

The invention will be now described according to a particular embodiment given by way of illustration and not limitation.

BRIEF DESCRIPTION OF DRAWINGS

The single figure shows a schematic section of an example installation for implementing the method of the invention according to the particular embodiment described below view. DETAILED DESCRIPTION OF A PARTICULAR EMBODIMENT

EXAMPLE

In this example, it has been used such a facility as shown in the single figure.

In this figure, the installation

(Referenced 1) comprises liquid hydrocarbon feedstock feeding means to be treated, aggregating agent and the supercritical fluid consisting of:

- a tank or vessel 3 comprising the hydrocarbon feedstock to be treated;

- a tank or tank 5 comprising aggregating agent; and

- a reservoir or tank 7 with a fluid in the supercritical state, which is in this case carbon dioxide.

The tanks 3 and 7 are connected to an injection zone 9 located upstream of the filtration membrane 11, respectively via a line 13 provided with a pump 15 and a conduit 17 provided with a pump 19.

The reservoir 5 is connected to the pipe 13 downstream of the pump 15 and upstream of the injection zone 9 through line 16.

The contacting step a) of the process is thus carried out at the injection zone 9.

The two pumps 15 and 19 are high-pressure diaphragm metering pumps.

The resulting mixture of the contact in the injection zone 9 is then injected via a circulation loop 21 provided with a circulation pump 23 through a filtration membrane 11 ceramic oxide whose average pore size is 0.1 pm.

The filtration membrane is connected via a conduit 24 to a separator 27 for accommodating the filtrate mixed with the supercritical fluid and via a conduit 30 to a separator 31 designed to accommodate the retentate also mixed with the supercritical fluid.

The separator 27 is provided with a duct 37 for conveying the filtrate to a recovery unit (not shown) and a conduit 39 for conveying the supercritical fluid to the tank 7 via a pipe 36.

The separator 31 is provided with a conduit 33 for conveying of the retentate to a recovery unit (not shown) and a conduit 35 for conveying the supercritical fluid to the tank 7 via line 36.

The hydrocarbon feedstock treated according to this example is a waste mineral oil IGOL brand from a drain of an engine of a truck brand RVI having covered 100 000 km, including the oil dispersant additive alkenylsuccinimide kind.

A test was carried out without addition of aggregating agent in the oil to be treated (this test is referred to below as "reference test") and another test was performed with an oil having the same characteristics as the reference test, with the addition, however, a bitumen type aggregation agent downstream of the vessel 3 up to 1% by weight based on the total weight of oil (this test is referred to below below "trial aggregating agent").

The filtration is carried out tangentially.

The transmembrane pressure (i.e. the pressure differential that allows the passage of oil through the membrane to recover a filtrate) is 4 bar.

The static pressure (i.e. the pressure of CO2 is applied to the injection point 9) is 150 bars.

The treatment temperature is 130 to

135 ° C.

At the outlet of the separator 27, it was measured for these two tests, the concentration of elements present in the filtrate (hereinafter symbolized by Cfiitrat) by ASTM D 4629 method for nitrogen and by the method ASTM D 5185 (ICP) for the other elements.

The results are summarized in the table below.

Element Trial Trial with reference agent aggregation

Cfiitrat Cfiitrat

N 2100 500

P 401 243

Zn 323 171

Ca 520 144

March 7 mg

Al 2 1 FE 23 15

Cr 2 1

Mo April 10

Cu 2 0

Pb 2 1

Na April 6

B 24 14

It is noted that the nitrogen is present in an amount about four times lower in the filtrate from the test with the aggregating agent in the filtrate from the reference test. This is due to the improved retention dispersing additives of the type alkenylsuccinimide present in the oil to be processed.

This improved retention also means better results retentions for other items in the table, because these elements are trapped by aggregating agent that generates itself aggregation dispersant additives.

Claims

1. A method of regenerating a hydrocarbon feed comprising one or more dispersant additives, said method comprising the steps of:
a) a step of contacting said feedstock with at least an aggregating agent or said dispersant additives, whereby one obtains a feed comprising aggregates or said dispersant additives;
b) a step of passing the filler obtained after step a) on a filter retaining said aggregates.
2. The method of claim 1, wherein the hydrocarbon feedstock is a waste oil.
3. The method of claim 1 or 2, wherein the dispersant additives are selected from alkylènylsuccinimides compounds and the Mannich base.
4. A method according to any preceding claim, wherein the agent aggregation of said dispersant additive is selected from solid compounds, liquid compounds and pasty compounds and mixtures thereof.
5. A method according to any preceding claim, wherein the aggregation agent is added to the hydrocarbon feed in an amount of 0.1 to 20% by weight based on the total mass of the load.
6. A method according to any preceding claim, wherein step b) is carried out by dead-end filtration or crossflow filtration.
7. A method according to any preceding claim, wherein step b) is performed by tangential filtration.
8. A method according to any preceding claim, wherein step b) is carried out in the presence of a supercritical fluid.
PCT/EP2011/053521 2010-03-10 2011-03-09 Method for regenerating hydrocarbon filler WO2011110585A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1051722A FR2957353B1 (en) 2010-03-10 2010-03-10 Method for removal of one or more compounds contained in a hydrocarbon feed
FR1051722 2010-03-10

Publications (1)

Publication Number Publication Date
WO2011110585A1 true true WO2011110585A1 (en) 2011-09-15

Family

ID=42785012

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/053521 WO2011110585A1 (en) 2010-03-10 2011-03-09 Method for regenerating hydrocarbon filler

Country Status (2)

Country Link
FR (1) FR2957353B1 (en)
WO (1) WO2011110585A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156113A4 (en) * 2014-06-10 2018-03-21 Electrophor, Inc. Liquid purification method and system for the implementation thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1393223A (en) * 1916-11-21 1921-10-11 Celite Products Company Process of reclaiming used lubricating-oils
US2303262A (en) * 1940-08-15 1942-11-24 Buckeye Lab Inc Apparatus for processing oils
US3930988A (en) * 1975-02-24 1976-01-06 Phillips Petroleum Company Reclaiming used motor oil
FR2453211A1 (en) 1979-04-02 1980-10-31 Rhone Poulenc Ind Regeneration of used lubricating oil - by ultrafiltration and treatment with silica adsorbent
FR2482975A1 (en) 1980-05-22 1981-11-27 Commissariat Energie Atomique ultrafiltration processing method has high temperature of a hydrocarbon charge
US4544491A (en) * 1983-08-24 1985-10-01 Claypro Associates Recovery of hydrocarbon oil from filter cakes
FR2761899A1 (en) * 1997-04-15 1998-10-16 Commissariat Energie Atomique Method and tangential flow filtration system of a viscous liquid
WO2000052118A1 (en) 1999-03-02 2000-09-08 Commissariat A L'energie Atomique Method for treating an oil using a liquid in a supercritical state

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1393223A (en) * 1916-11-21 1921-10-11 Celite Products Company Process of reclaiming used lubricating-oils
US2303262A (en) * 1940-08-15 1942-11-24 Buckeye Lab Inc Apparatus for processing oils
US3930988A (en) * 1975-02-24 1976-01-06 Phillips Petroleum Company Reclaiming used motor oil
FR2453211A1 (en) 1979-04-02 1980-10-31 Rhone Poulenc Ind Regeneration of used lubricating oil - by ultrafiltration and treatment with silica adsorbent
FR2482975A1 (en) 1980-05-22 1981-11-27 Commissariat Energie Atomique ultrafiltration processing method has high temperature of a hydrocarbon charge
EP0041013A1 (en) * 1980-05-22 1981-12-02 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Process for a high-temperature ultrafiltration treatment of a hydrocarbon load
US4544491A (en) * 1983-08-24 1985-10-01 Claypro Associates Recovery of hydrocarbon oil from filter cakes
FR2761899A1 (en) * 1997-04-15 1998-10-16 Commissariat Energie Atomique Method and tangential flow filtration system of a viscous liquid
WO2000052118A1 (en) 1999-03-02 2000-09-08 Commissariat A L'energie Atomique Method for treating an oil using a liquid in a supercritical state

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156113A4 (en) * 2014-06-10 2018-03-21 Electrophor, Inc. Liquid purification method and system for the implementation thereof

Also Published As

Publication number Publication date Type
FR2957353B1 (en) 2014-09-05 grant
FR2957353A1 (en) 2011-09-16 application

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