Abstract: The invention relates to the use of polyamide 11 as an internal coating for a gas transport pipeline to reduce pressure loss.

Abstract: The fumes from gas turbine TG are cooled by heat exchangers E1, E2, E01, E02 and E03 and compressed by compressors C1 and C2. The cold and high-pressure fumes are depleted in carbon dioxide in treating plant 10. The carbon dioxide can be injected into an underground reservoir. The fumes depleted in carbon dioxide are heated by heat exchangers E1 and E2, and expanded by turbines T2, then T1. In particular, after expansion in turbine T2 and before expansion in turbine T1, the fumes are heated using the heat of the fumes from compressor C2.

Abstract: A skin and a method for restructuring the inner surface of a tube of long length includes manufacturing a skin, in a material with expansion rate greater than 50%, the external surface of which includes a restructuring print determined in order to take into account the longitudinal and radial expansions that the skin is going to undergo, and as a function of the desired final surface state for the tube to be restructured, longitudinally expanding the skin up to the required length for the tube, longitudinally introducing expanded skin inside tube to be restructured, and radially expanding the skin to realize the restructuring.

Abstract: After passing into reaction section R, the hydrocarbon feedstock C mixed with hydrogen H is expanded in device D. The expansion is brought about by a single-phase turbine until a gas volume ratio of 5% is reached, then expansion is brought about in a two-phase turbine of the rotodynamic type.

Abstract: The gas to be processed, flowing in through line 10, contains impurities. This gas is contacted in column C1 with a solvent flowing in through line 18. The scrubbed gas is discharged through line 19. The impurity-laden solvent recovered through line 12 is regenerated by expansion, then by distillation in column C2. The invention proposes carrying out expansion by means of two-phase turbines T1 and T2.

Abstract: The device 1 for determining the hydraulic roughness of the internal surface of a pipe 2 has a trolley 4 with wheels 3. Drum 5 is mounted to be rotationally movable on trolley 4. The roughness is determined by measuring the resisting torque of drum 5 or by measuring the dynamic pressure given by Pitot tubes 11. The translationally movable trolley 4 has the advantage of being able to measure the roughness at different points in pipe 2.

Abstract: The fumes from gas turbine TG are cooled by heat exchangers E1, E2, E01, E02 and E03 and compressed by compressors C1 and C2. The cold and high-pressure fumes are depleted in carbon dioxide in treating plant 10. The fumes depleted in carbon dioxide are heated by heat exchangers E1 and E2, and expanded by turbines T2, then T1. The energy recovered in form of heat in exchangers E01, E02 and E03 is converted into mechanical energy by the engine cycle used by turbine T, condenser E and pump P. The mechanical energy is available at the shaft of turbine T.

Abstract: The invention relates to a method for making structured surfaces within pipes (1) lined with a coating and wherein fluids such as gas, hydrocarbons or water circulate. The invention consists in irreversibly deforming, during baking and/or drying, the coating internally applied by impression, via expandable means (16), for example a rubber bladder whose outer surface bears the structurations.

Abstract: The gas to be processed, flowing in through line 10, contains impurities. This gas is contacted in column C1 with a solvent flowing in through line 18. The scrubbed gas is discharged through line 19. The impurity-laden solvent recovered through line 12 is regenerated by expansion, then by distillation in column C2. The invention proposes carrying out expansion by means of two-phase turbines T1 and T2.

Abstract: After passing into reaction section R, the hydrocarbon feedstock C mixed with hydrogen H is expanded in device D. The expansion is brought about by a single-phase turbine until a gas volume ratio of 5% is reached, then expansion is brought about in a two-phase turbine of the rotodynamic type.

Abstract: The fumes from gas turbine TG are cooled by heat exchangers E1, E2, E01, E02 and E03 and compressed by compressors C1 and C2. The cold and high-pressure fumes are depleted in carbon dioxide in treating plant 10. The carbon dioxide can be injected into an underground reservoir. The fumes depleted in carbon dioxide are heated by heat exchangers E1 and E2, and expanded by turbines T2, then T1. In particular, after expansion in turbine T2 and before expansion in turbine T1, the fumes are heated using the heat of the fumes from compressor C2.

Abstract: The fumes from gas turbine TG are cooled by heat exchangers E1, E2, E01, E02 and E03 and compressed by compressors C1 and C2. The cold and high-pressure fumes are depleted in carbon dioxide in treating plant 10. The fumes depleted in carbon dioxide are heated by heat exchangers E1 and E2, and expanded by turbines T2, then T1.

Abstract: Pipe (1) for conveying a fluid. It comprises a metal tube (2). The inner wall of the metal tube is coated with a layer (3) of a porous material permeable to the fluid conveyed. The fluid circulates in layer (3) in order to limit the pressure drops generated by the flow.

Abstract: Pipe (1) for conveying a fluid. It comprises a metal tube (2). The inner wall of the metal tube is coated with a layer (3) of a porous material permeable to the fluid conveyed. The fluid circulates in layer (3) in order to limit the pressure drops generated by the flow.

Abstract: An Improved impeller which imparts energy to or receives energy from a multiphase fluid comprising at least one gas phase and at least one liquid phase is disclosed. The impeller comprises an inlet section and an outlet section, at least one flow channel delimited by at least one boss and two successive vanes. The impeller has an axial length Lt and a mean radius of curvature Rh(z), taken in the meridian plane, the radius of curvature Rh(z) being determined over at least part of length Lt so as to limit separation of the phases of said multiphase fluid inside the channel.

Abstract: The invention is a two-phase compression device and a process which provides energy to fluids including an essentially liquid fluid and an essentially gaseous fluid or a fluid having a liquid phase and a gas phase, at least one of the fluids or phases being miscible in at least one other of the fluids or phases which allows mixing of the fluids or phases. A device in accordance with the invention includes at least one two-phase compression element having at least one inlet stage and at least one outlet stage, each one of the stages having an impeller and a diffuser, which mixes the essentially liquid fluid and the essentially gaseous fluid or the phases and which provides energy to each of the essentially liquid and gaseous fluids or phases with the mixture provided from the at least one two-phase compression element being a pressurized liquid or essentially a pressurized liquid.

Abstract: An alternating compression-pumping system includes at least one alternating compression-pumping section, suited to impart a pressure value to an essentially liquid fluid or to an essentially gaseous fluid, at least one pumping section suited for an essentially fluid, at least one device for separating the various phases of the fluid, provided with a level detector allowing to detect the gas-liquid interface level, valves allowing to control the flow rate of the liquid or gas phases, and a control system allowing to vary the state of the valves so as to shift the compression section from an operating mode suited for gas to an operating mode suited for liquid and vice versa.

Abstract: A system for compressing one or more fluids (F1, F2) with one of the fluids being essentially gaseous. A single-phase compression unit (20) is fed gaseous fluid (F1) from a delivery line (21). A multiphase compression unit (24) receives both fluids (F1, F2). A delivery line (22) delivers gaseous fluid to the multiphase compression unit and a delivery line (23) feeds the other fluid F2 to the multiphase compression unit (24). A discharge line connects to the multiphase compression unit. The single phase compression unit allows operation of the multiphase compression unit within a two-phase efficiency range.

Abstract: A compression or expansion two-phase helical mixed flow impeller (1) comprising one or more vanes (3) mounted on a boss, a cover (4) or fairing mounted on the outer part of the vanes, the assembly being arranged in a housing (2). The cover (4) has at least one of its ends corresponding to the inlet and/or the outlet of the impeller, a slop whose value is determined so as to limit leaks between the inlet and the outlet of the impeller.

Abstract: A gas compression device for compressing and separating a gas including a liquid phase and a gas phase, includes at least one inlet pipe for the wet gas, at least one compressed gas outlet pipe, a shaft and several compression stages. The device includes at least one compression stage suited for separation of the liquid phase and of the gas phase, one or more pipes designed for discharge of an essentially liquid phase resulting at least partly from the separation performed in a suitable compression stage. The device can be used for wet gas transportation in the petroleum field.