Abstract: An integrated process for producing desulfurized hydroprocessed products from Fischer-Tropsch synthesis is disclosed. The process involves isolating and desulfurizing a methane-rich stream from a natural gas source in a first separation zone and a desulfurization zone. The methane-rich stream is converted to syngas and subjected to a hydrocarbon synthesis step, for example, a Fischer-Tropsch synthesis step. The products from the hydrocarbon synthesis step typically include a C4− fraction, a C5-20 fraction, and a C20+ wax fraction. These fractions are isolated in a second separation zone, typically via fractional distillation. The C4− fraction can be recycled through the first separation zone to provide a second methane-rich fraction for conversion to synthesis gas. The C4− fraction can optionally be treated, for example, with hydrotreatment or hydroisomerization catalysts and conditions before or after passage through the first separation zone.

Abstract: A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically connected to a resistance (5) which is connected to a second terminal (3A), and a temporary insertion assembly for temporarily inserting the resistance when closing the circuit-breaker. The fixed arcing contact is an elongated metal rod (11) having a first end (11A). The temporary insertion assembly includes a ring (22) that slides along and electrically contacts the metal rod. The ring has first contacts (25) that cooperate with the moving main contact (14), and second contacts (31) that cooperate with third contacts (32) connected electrically to the second terminal (3A). A first biasing member (29) biases a cylindrical insulating pusher (28) toward the moving assembly, and a second biasing member (40) biases the insertion assembly in the same direction.

Abstract: The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t.sub.0 and delay the zero crossing of the current after a maximum time lapse of t.sub.zmax -t.sub.0. The circuit breaker includes a plurality of interrupting chambers in series. These chambers open at an instant t.sub.1 which is subsequent to the fault instant t.sub.0 and include moving equipment and an arc blaster. The arc blaster operates between instant t.sub.1 and instant t.sub.c, where instant t.sub.c is earlier than the instant t.sub.zmax -T. The circuit breaker also includes a feature which causes blasting to be extended to an instant t.sub.2 lying in the range t.sub.zmax -T and t.sub.zmax +T.