Abstract: A process for partial dehydration of a gas by contact with a solvent that can be regenerated by: a) A stage for absorption of H2O by contact of the gas to be treated and regenerated solvent producing a dehydrated gas effluent and a liquid solvent effluent that is charged with H2O and absorbed gas, b) A stage for cooling the solvent charged with H2O at ambient temperature, c) A stage for separation by segregation during which liquid H2O and the solvent are separated at ambient temperature, d) A stage in which the regenerated solvent that is obtained at the end of stage c) is heated, e) A stage in which the regenerated and heated solvent that is obtained at the end of stage d) is recycled to the absorption stage a).

Abstract: The liquid hydrocarbon stream including COS is introduced via line 1 into membrane contactor CM to be placed in contact, through membrane M, with the aqueous alkanolamine solution arriving via line 3. The COS contained in the hydrocarbon stream is absorbed by the aqueous alkanolamine solution. The liquid hydrocarbons from which the COS has been removed are evacuated from CM via line 2. The aqueous solution containing COS is sent via line 4 to zone R to be regenerated. The compounds released during regeneration, particularly COS and COS-derived products, are evacuated from zone R via line 5. The regenerated aqueous alkanolamine solution is recycled via line 3 into membrane contactor CM.

Abstract: A process for partial dehydration of a gas by contact with a solvent that can be regenerated by: a) A stage for absorption of H2O by contact of the gas to be treated and regenerated solvent producing a dehydrated gas effluent and a liquid solvent effluent that is charged with H2O and absorbed gas, b) A stage for cooling the solvent charged with H2O at ambient temperature, c) A stage for separation by segregation during which liquid H2O and the solvent are separated at ambient temperature, d) A stage in which the regenerated solvent that is obtained at the end of stage c) is heated, e) A stage in which the regenerated and heated solvent that is obtained at the end of stage d) is recycled to the absorption stage a).

Abstract: The liquid hydrocarbon stream including COS is introduced via line 1 into membrane contactor CM to be placed in contact, through membrane M, with the aqueous alkanolamine solution arriving via line 3. The COS contained in the hydrocarbon stream is absorbed by the aqueous alkanolamine solution. The liquid hydrocarbons from which the COS has been removed are evacuated from CM via line 2. The aqueous solution containing COS is sent via line 4 to zone R to be regenerated. The compounds released during regeneration, particularly COS and COS-derived products, are evacuated from zone R via line 5. The regenerated aqueous alkanolamine solution is recycled via line 3 into membrane contactor CM.

Abstract: The gaseous effluent flowing in through line 1 is contacted in absorption zone ZA with the liquid absorbent solution flowing in through line 9. The gaseous effluent depleted in acid compounds is discharged through line 2. The absorbent solution laden with acid compounds is discharged through line 3. The absorbent solution once laden with acid compounds comprises two phases: a first phase poor in acid compounds and a second phase rich in acid compounds. The two phases are separated in zone ZS. The first phase is recycled through lines 5 and 9 to absorption zone ZA. The second phase is fed through line 4 into regeneration zone ZR. In zone ZR, the acid compounds are separated from the absorbent solution. The acid compounds are discharged through line 7. The regenerated absorbent solution is recycled through lines 6 and 9 to zone ZA.

Abstract: Method for modeling the flocculation conditions of hydrocarbon-containing fluids under pressure, related to a reference fluid. The asphaltenic properties are modeled from the results of an experimental study of a single asphaltenic reference fluid and by means of homothetic transformation laws. These reduced data allow to deal with asphaltenes flocculation in an industrial simulator working according to a simplified model. It is then possible to predict the amounts of asphaltenes that will flocculate in a reservoir or in a reactor during development, considering the variable pressure and composition conditions. Application: optimization of the development conditions of reservoirs or of an industrial reactor in which asphaltenic fluids undergo expansions.

Abstract: The liquid hydrocarbon stream including COS is introduced via line 1 into membrane contactor CM to be placed in contact, through membrane M, with the aqueous alkanolamine solution arriving via line 3. The COS contained in the hydrocarbon stream is absorbed by the aqueous alkanolamine solution. The liquid hydrocarbons from which the COS has been removed are evacuated from CM via line 2. The aqueous solution containing COS is sent via line 4 to zone R to be regenerated. The compounds released during regeneration, particularly COS and COS-derived products, are evacuated from zone R via line 5. The regenerated aqueous alkanolamine solution is recycled via line 3 into membrane contactor CM.

Abstract: The gaseous effluent flowing in through line 1 is contacted in absorption zone ZA with the liquid absorbent solution flowing in through line 9. The gaseous effluent depleted in acid compounds is discharged through line 2. The absorbent solution laden with acid compounds is discharged through line 3. The absorbent solution once laden with acid compounds comprises two phases: a first phase poor in acid compounds and a second phase rich in acid compounds. The two phases are separated in zone ZS. The first phase is recycled through lines 5 and 9 to absorption zone ZA. The second phase is fed through line 4 into regeneration zone ZR. In zone ZR, the acid compounds are separated from the absorbent solution. The acid compounds are discharged through line 7. The regenerated absorbent solution is recycled through lines 6 and 9 to zone ZA.

Abstract: The fumes flowing in through line 1 are contacted in column C1 with a solvent, at low vapour pressure, absorbing the carbon dioxide. The solvent laden with carbon dioxide is regenerated by distillation in column C2. In order to improve the regeneration operation, a gas is injected through line 11 into column C2 so that this gas carries along the carbon dioxide contained in the solvent. The carbon dioxide-rich gaseous effluent obtained at the top of column C2 can be liquefied by compression and cooling, then stored in surge tank R, which allows its transportation and possibly underground sequestration.

Abstract: Method and device for predicting the flocculation threshold of asphaltenes contained in hydrocarbon mixtures. The method comprises the following stages: determining the refraction index (nA) of several asphaltenes used as reference asphaltenes; determining experimentally, for predetermined thermodynamic conditions, the variation of solubility index (&dgr;) in connection with the refraction index of hydrocarbon constituents including light hydrocarbons and reference asphaltenes; deducing therefrom a correlation relation modelling this variation of solubility index (&dgr;).

Abstract: Within the scope of a process using two absorption sections for treating a natural gas containing CO2 and/or H2S, as well as mercaptans, COS and/or CS2, the present invention aims to wash the gaseous hydrocarbons desorbed upon expansion of the solvent from the first absorption section with the solvent from the second absorption section.

Abstract: Method for modelling the flocculation conditions of hydrocarbon-containing fluids under pressure, related to a reference fluid.

Abstract: Fluid sampling device comprising a sampling cell (1) provided with a thermal control valve having a plug (21) made from a solid low-melting temperature material that is made permeable to the fluid by temporary heating. The device comprises an intermediate cell (6) with a central channel (7) provided with a plug made from the solid material, which communicates an inlet with a first end and an outlet with the opposite end, and suited to tightly fit into the inlet hole of the sampling cell, a device (12, 13) for connecting the two cells (1, 6) to each other and an element (14) associated with a seal (20) for connecting, at the inlet of intermediate cell (6), a linking tube (15) to a reactor (17) producing the fluid to be sampled.

Abstract: Method and device for predicting the flocculation threshold of asphaltenes contained in hydrocarbon mixtures.

Abstract: Within the scope of a process using two absorption sections for treating a natural gas containing CO2 and/or H2S, as well as mercaptans, COS and/or CS2, the present invention aims to wash the gaseous hydrocarbons desorbed upon expansion of the solvent from the first absorption section with the solvent from the second absorption section.

Abstract: The invention is a method for determining the Joule-Thomson coefficient of a fluid, expressing the temperature variation in relation to a pressure variation thereof. The fluid is injected at a determined injection temperature into a thin tube (8) (preferably a capillary tube in order to obtain a high pressure drop with reasonable flow rates) which contains a temperature detector (TC1) leading to a pressure drop for the fluid. The temperature variation of the fluid in relation to the injection temperature is measured by means of this temperature detector. The pressure drop undergone by the fluid in tube (8), due to the presence of this temperature detector, is also measured and the Joule-Thomson coefficient is calculated by combination of measurements of the pressure drop and of the temperature variation of the fluid. The method can be applied notably in the field of hydrocarbon production, more particularly hydrocarbons coming from high-pressure and high-temperature reservoirs and in gas lines.

Abstract: Fluid sampling device comprising a sampling cell provided with a thermal control valve consisting of a plug made from a solid low-melting temperature alloy that is made permeable to the fluid by heating the metal alloy to its melting temperature. The device mainly comprises an intermediate cell with a central channel provided with a plug made from a low-melting temperature alloy which fits into the inlet hole of the sampling cell. A connecting device for connecting the two cells together and an element which connects the intermediate cell via a fine linking tube to a reactor producing the fluid to be sampled.