Abstract: The present invention relates to a process for removing acid compounds contained in a gaseous effluent which consists in bringing a gaseous effluent into contact, in the absorption column, with an absorbent solution comprising water, between 20% and 28% by weight of pentamethyldipropylenetriamine and between 5% and 35% by weight of N-methyldiethanolamine.

Abstract: The present invention relates to a device (1) for measuring the oxidation stability and/or the thermal stability of any type of fuel, including diesel fuel, by miniaturization of the test system by use of a microfluidic technique. The physical phenomena to which fuels are subjected are reproduced by the microchannels (12) of the microfluidic chip (7), which comprise a representation of at least one of the fuel injection and the fuel circulation for a drive system, an internal-combustion engine or an aircraft reactor for example.

Abstract: The present invention relates to a device (1) for measuring the oxidation stability and/or the thermal stability of any type of fuel, including diesel fuel, by miniaturization of the test system by use of a microfluidic technique. The physical phenomena to which fuels are subjected are reproduced by the microchannels (12) of the microfluidic chip (7), which comprise a representation of at least one of the fuel injection and the fuel circulation for a drive system, an internal-combustion engine or an aircraft reactor for example.

Abstract: The invention is a method for selectively removing hydrogen sulfide H2S from a gaseous effluent comprising at least H2S and CO2. A stage of selective absorption of the hydrogen sulfide in relation to the CO2 is carried out by contacting the effluent with a solution comprising (a) water and (b) at least one nitrogen compound. The compound comprises at least one tertiary amine function or one hindered secondary amine function. The absorption selectivity is controlled by adding (c) a viscosifying compound to the absorbent solution.

Abstract: The present invention is intended to take a sample of an emulsion circulating in a line. The emulsion is momentarily diverted from the main circulation line 1 thereof to a bypass line 2. By restoring circulation of the emulsion in main line 1, an emulsion sample still present in bypass line 2 is confined under pressure. The emulsion sample is then stabilized according to a well-known method. Since the size and the distribution of the drops no longer evolve with time, the sample can be observed and analyzed after sampling. The invention more particularly applies to the field of petroleum industry and it is notably intended to take a sample of a petroleum effluent in form of an emulsion at wellheads.

Abstract: The present invention is intended to take a sample of an emulsion circulating in a line. The emulsion is momentarily diverted from the main circulation line 1 thereof to a bypass line 2. By restoring circulation of the emulsion in main line 1, an emulsion sample still present in bypass line 2 is confined under pressure. The emulsion sample is then stabilized according to a well-known method. Since the size and the distribution of the drops no longer evolve with time, the sample can be observed and analysed after sampling. The invention more particularly applies to the field of petroleum industry and it is notably intended to take a sample of a petroleum effluent in form of an emulsion at wellheads.