Abstract: A method for starting up an olefin production plant without venting gases to the atmosphere wherein an artificial feed is employed in the compression zone of the plant while the furnace and quench zones remain idle, and gases from the compression and refrigeration zones of the plant are recycled to the inlet of the compression zone during startup, after which the furnace and quench zones are started up using natural feed.

Abstract: A method for thawing and removing frozen material from a cryogenic separation unit such as that found in an olefin production plant comprising employing a flushing agent to thaw and remove the frozen material, purging the flushing agent with a gas, and removing residual flushing agent with a solvent that is miscible with the flushing agent and has a freezing temperature substantially lower than the flushing agent.

Abstract: A system is provided for automatically dialing a number stored in an electronic organizer on a telephone. The system comprises an electronic organizer including memory for storing a plurality of telephone numbers therein, an input device for selecting one of the telephone numbers, and a communicator for transmitting digits of the selected telephone number. The system further includes telephone circuitry adapted to dial digits of the selected telephone number upon the receipt thereof. Further provided is an interface including a communicator in communication with the communicator of the electronic organizer for receiving the digits therefrom and transmitting the same to the telephone circuitry.

Abstract: A method for thawing and removing frozen material from a cryogenic separation unit such as that found in an olefin production plant comprising employing a flushing agent to thaw and remove the frozen material, purging the flushing agent with a gas, and removing residual flushing agent with a solvent that is miscible with the flushing agent and has a freezing temperature substantially lower than the flushing agent.

Abstract: A multipurpose tool for use by firefighters and emergency personnel. The tool including a spanner wrench claw for turning firefighting hose connections, a wrench slot for turning natural gas valves, a glass-breaking spike, an open slot cutter for cutting seat belts and the like, and a foldable handle having an end shaped to be used as a pry bar.

Abstract: A unitary sink structure for mounting to a vertical wall. The sink structure comprises a horizontal base element having a front edge and a back edge. This base element has a concave surface in at least a part to form the sink, and a drain opening is provided at the lowest point in the concave surface. Also included is a vertical attaching member or rear wall which has a front surface and a back surface, a left edge and a right edge, and a lower edge and an upper edge. The lower edge of the rear wall is permanently joined to the back edge of the base element such that the front surface of the rear wall joins the top surface of the base element. Left side member and right side member have a triangular shape with vertical edges, horizontal edges, and hypotenuse edges. These two side members have their vertical edges permanently joined to the left and right edges of the rear wall, and their horizontal edges permanently joined to the edges of the base element such that a unitary structure is provided.

Abstract: A molded unitary support device for mounting to a vertical wall (52) is disclosed. The molded unitary supporting device comprises a horizontal support shelf (10), having a front edge (20) and a back edge (22). Also included is a vertical attaching member (26) which has a front surface (28) and a back surface (30), a left edge (36) and a right edge (38), a lower edge (24) and an upper edge (34). The lower edge (24) of attaching member (26) is permanently molded to back edge (22) of support shelf (10) such that the front surface (28) of the attaching member (26) joins the top surface (12) of the support shelf. Left side member (40) and right side member (42) have a triangular shape with vertical edges (48A) and (48B), horizontal edges (50A) and (50B), and hypotenuse edges (52A) and (52B).

Abstract: A process for preparing N-alkyl terephthalamates is disclosed and comprises contacting within a liquid phase reaction medium a di(C.sub.1 -C.sub.4 alkyl) terephthalate and a C.sub.8 -C.sub.30 primary or secondary monoamine in the presence of 0.1-10 weight percent based on the weight of the reactants of boric acid.