Abstract: The inventions is directed to a new design for catalyst tubes, which makes it possible to apply the concept of regenerative reforming into steam reformers having catalyst tube inlets and outlets at opposite sides of the furnace chamber. The catalyst tube comprises an inlet for process gas to enter the catalyst tube and an outlet for process gas to exit the catalyst tube, which inlet and outlet are located at opposite ends of the catalyst tube. The catalyst tube further comprises a first annular channel comprising the catalyst, a second annular channel for process gas to flow countercurrently or co-currently to the process gas flowing through the first annular channel.

Abstract: A facility (50) for mixing/separating two immiscible liquids (22, 24) having different densities, said facility including a mixer (52) combined with a settler (14), the mixer including a tank (16) provided with two liquid inlets (18, 20); an agitator (28) located in the tank, the agitator being mounted on a shaft (30) rotating around a vertical axis (32); and a lift pump (54) located above the agitator. The pump includes a moving body (56) rotatable along the vertical axis (32), the moving body defining a first frustoconical inner surface (60) positioned along the vertical axis and upwardly flared, and a body (66) that is stationary relative to the tank, the stationary body defining a second frustoconical inner surface (68) positioned along the vertical axis and upwardly flared, the second frustoconical inner surface being situated substantially in an extension of, and above, the first frustoconical inner surface.

Abstract: A PIP Trace Heating Connection Assembly A pipe-in-pipe (PIP) trace heating connection assembly in the annulus of a PIP pipeline comprising at least first and second conjoined PIP stalks having inner and outer pipes and the annulus thereinbetween, the first PIP stalk having a first trace heating cable (22) located along its inner pipe, and the second PIP stalk having a second trace heating cable (24) located along its inner pipe, the first and second heating cables have cable ends and heating cable terminals on the cable ends, and a flexible intermediate connecting cable (40) having first and second intermediate terminals secured to, the heating cable terminals of the first and second trace heating cables respectively to form a secured electrical pathway between the first and second trace heating cables.

Abstract: A pipe (14) extending between a surface end (20) and a bottom end (22) thereof, and defining an internal passage (24) ending at the bottom end (22) and at the surface end (20). A dynamic closing member (30) at the bottom end (22), which opens above a threshold pressure applied from the exterior towards the interior of the pipe (14), and closing below the threshold pressure. The threshold pressure is defined as a function of at least one parameter representing the heaving of the pipe under the effect of variation in height of the water in which the pipe extends.

Abstract: A method for determining the bend of a tubular structure, including determining the inclination of first and second rigid objects fixed in distinct locations along the tubular structure. The method includes supplying accelerometers (A1, . . . AN) rigidly linked by the object to measure an acceleration in at least one direction of measurement (vj), the respective directions of measurement of at least two of said accelerometers being non-collinear. The measurement, by the accelerometers, of the components of the Earth's gravitational field along said directions of measurement, the measurement providing, for each of said directions, a measurement value, denoted mj for a measurement direction of index i. The method includes solving a defined matrix equation to determine the inclination ? of the object relative to the reference frame of reference.

Abstract: The present invention provides a process for the preparation of ethene by vapor phase chemical dehydration of a feed comprising ethanol and optionally water and/or ethoxyethane, said process comprising contacting a dried supported heteropoly acid catalyst in a reactor with the feed-stream having feed temperature of at least 200° C.; wherein the pressure inside the reactor is at least 0.80 MPa but less than 1.80 MPa; and before the supported heteropolyacid catalyst is contacted with the feed-stream having a feed temperature of at least 200° C., the process is initiated by: (i) drying a supported heteropolyacid catalyst in a reactor under a stream of inert gas having a feed temperature of from above 100° C. to 200° C.; and (ii) contacting the dried supported heteropolyacid catalyst with an ethanol-containing vapor stream having a feed temperature of from above 100° C. to 160° C.

Abstract: A multi-cable subsea lifting system including two or more load-cable lifting apparatus (2a, 2b); a load cable (4a, 4b) extending from each load-cable lifting apparatus (2a, 2b) to a subsea attachment point; a torque measuring device (22) associated with each load cable (4a, 4b); one or more subsea anti-cabling devices (20), each anti-cabling device (20) including a motor (24) connected to a respective load cable (4a, 4b); and a controller (30) in communication with each motor (24) and torque measuring device (22); wherein the controller (30) is configured to actuate each motor (24) to impart a rotational force to its respective load cable (4a, 4b) in response to measurements obtained from the torque measuring device (22) with the aim to limit cabling, remove cabling or control heading either automatically or from external control.

Abstract: A method has the following steps: a) providing an undersea foundation arranged on the bed of a body of water; b) laying a section of pipe and of an in-line structure on the foundation and allowing the section of pipe to freely self-orient on the foundation; c) placing at least one guide on the foundation on both sides of the section of pipe; d) blocking the guide on the foundation to laterally clamp the section of pipe with respect to the foundation, while authorizing a longitudinal movement of the section of pipe with respect to the guide.

Abstract: The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2?CF—O—Rf??(I) wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

Abstract: A cracking furnace comprises a pyrolysis tube 1 for carrying a flow of fluid, the pyrolysis tube comprising a radially inner body 3 and a radially outer wall 2 which together define an annular flow passage 5, wherein at least one of the radially inner body and the radially outer wall has a centre line which extends helically in a longitudinal direction of the pyrolysis tube, so as to promote rotation of the fluid as it flows along the pyrolysis tube.

Abstract: The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2?CF—O—Rf ??(I) wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

Abstract: This flexible fluid transport pipe includes an inner polymer sheath defining a fluid circulation passage with a central axis; at least one armor layer positioned outside the inner sheath; an inner carcass, positioned in the inner sheath, the inner carcass comprising a first bent tape defining a helical interstice emerging toward the central axis. The pipe includes a helical insert with a T-shaped cross-section comprising a rod inserted in the helical interstice and two wings protruding on either side of the rod to inwardly close off the helical interstice. The helical insert is formed from a second bent tape.

Abstract: The process comprises: introducing a feed flow in a synthesis gas generation unit to form a synthesis gas flow and introducing the synthesis gas flow in a Fischer-Tropsch synthesis unit at least partially removing carbon dioxide from a first flow formed from a Fischer-Tropsch tail gas flow to form a carbon dioxide depleted flow; forming a tail gas recycle flow from the carbon dioxide depleted flow; introducing the tail gas recycle flow in the synthesis gas generation unit and/or in the synthesis gas flow. The process comprises adjusting the carbon dioxide content in the tail gas recycle flow to control the hydrogen to carbon monoxide molar ratio in the synthesis gas flow to a target hydrogen to carbon monoxide molar ratio.

Abstract: A device (10) for a skimming operation for petrochemical or chemical fluid storage or process tanks working by gravitation, comprising buoyancy means (20), means (30) for collecting surface fluid to be skimmed including an opening (31) emerging just above the interface between the fluid with density d1 and the fluid with density d2, as well as connection means (32), and discharge means (40) for the collected surface fluid. The discharge means (40) includes at least two flexible pipes (41, 42) connected symmetrically to the connection means (32) and extending vertically in the fluid with density d2 toward the bottom of the tank.

Abstract: A pipe (14) extending between a surface end (20) and a bottom end (22) thereof, and defining an internal passage (24) ending at the bottom end (22) and at the surface end (20). A dynamic closing member (30) at the bottom end (22), which opens above a threshold pressure applied from the exterior towards the interior of the pipe (14), and closing below the threshold pressure. The threshold pressure is defined as a function of at least one parameter representing the heaving of the pipe under the effect of variation in height of the water in which the pipe extends.

Abstract: A method for mounting an endpiece for securing a tubular pipe and apparatus for implementing same. The method includes the steps of: a) providing an endpiece and a ring (36?) having an outer rotationally symmetrical cylindrical surface (40?), and a sheath having a sheath end (32) and an outer circular edge (46?); b) inserting the ring (36?) into the sheath end (32); c) leveling off the outer circular edge (46?); and d) covering the leveled edge with the endpiece. In step b) the ring (36, 36?, 36?) is inserted leaving one of the ends (44?) thereof extending out of the sheath end (32), and in step c) the outer circular edge (46?) is leveled off, by engaging the one of the two ring ends (44?).

Abstract: The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

Abstract: A device for the intimate mixing of solid particles and a gaseous medium within a gas-solid fluidized bed, comprising a plurality corrugated and/or ribbed planar stanchions arranged in alternating intersecting planes that provide a plurality of open spaces between or adjacent the alternating intersecting planar stanchions. The element has a three-dimensional lattice configuration and the corrugated and/or ribbed planar stanchions are formed from metal having peaks and valleys or ribs, such that the peaks and valleys or ribs are angled at less than 90 degrees from the fall-line of the planar stanchion when assembled into the element. The angled peaks and valleys or ribs form channels that enhance lateral movement of catalyst particles into the spaces between the stanchions to provide improved vapor/solids mixing and contact.

Abstract: An external catalyst cooler arrangement for an FCC regenerator improves the operation of the catalyst cooler by the use of a heat removal unit design utilizing a central supply tube and central heat removal conduit surrounded by external heat removal tubes connected directly to the central heat removal conduit.

Abstract: The present disclosure provides a system and method for supporting a catenary riser coupled to an offshore platform system including a pull tube and a pull tube stress joint for girth weld stress reduction and improved fatigue performance. A pull tube sleeve is coupled around a welded connection of the pull tube. The sleeve has a larger inner diameter than an outer diameter of the pull tube to form an annular space therebetween, and a fill material is filled into the space between the sleeve and the pull tube. The fill material provides a supportive coupling between the sleeve and the pull tube. The sleeve, the pull tube, or both can have gripping surfaces formed in or on their surfaces to retain the fill material in the space. The sleeve can be formed from a plurality of portions and be welded, fastened, or otherwise coupled around the pull tube.