Abstract: A system and process for separating ethane and propane from a feed stream comprising dehydrated liquefied petroleum gas is disclosed. A distillation column operates at a lower pressure and temperature than conventional distillation columns. High purity liquid propane exits the bottom of the distillation column and is flashed through a cooling control valve becoming a two-phase stream with the vapor entering a heat pump compressor. The high or increased temperature compressed propane stream exiting the heat pump compressor is directed into the distillation column to drive the separation of the ethane and propane, allowing the elimination of a reboiler from the system and process.

Abstract: An apparatus configured for treating sulfur at an elevated pressure. Embodiments of the apparatus comprises a vessel into which the sulfur is injected and a device for alleviating the pressure of the sulfur.

Abstract: Disclosed herein is an apparatus for treating sulfur at an elevated pressure. Embodiments of the apparatus comprises a vessel into which the sulfur is injected and a device for alleviating the pressure of the sulfur.

Abstract: A process for treating sulfur at elevated pressures by which the sulfur may be separated from a process gas in a separation vessel, sent to one or more transfer vessels, and the transfer vessel(s) vented to depressurize the sulfur to near atmospheric pressure. The sulfur may subsequently be transferred to ambient storage or other desirable use. The sulfur exiting the separation vessel may also be transferred to an intermediate vessel. The rate of transfer of the sulfur throughout the process may be controlled by controlling the pressure differentials between the various vessels.

Abstract: Disclosed herein is a system and process for treating sulfur at an elevated pressure. Embodiments of the system comprise a vessel into which the sulfur is injected and a device for alleviating the pressure of the sulfur.

Abstract: An acid gas burner and reactor apparatus, and method when used in the Claus process, are improved over the prior art by the provision of a substantially continuous circular slot for the flow of a reactant gas from an annular conduit into the open outflow end of a conduit that is located centrally of the annular conduit and through which flows pressure air, or air enriched with oxygen, the circular slot surrounding the open discharge end of the central conduit so as to discharge an annular curtain of the reactant gas into the flow of pressure air, or oxygen enriched air.

Abstract: A downhole relief valve connected to a tubing string in a producing well above the packer for controlling the well to prevent excess pressure built up in the annulus and casing damage following a tubing rupture at a point where the flowbore pressure exceeds the annulus pressure. The valve has a housing, fluid communication means between the flowbore and the annulus and a piston mounted within the housing for reciprocating between an open position and a closed position to allow flow in the fluid communication means between the flowbore and the annulus. The piston is biased to the closed position by compressed gas and/or a shear pin and to the open position by the hydraulic force exerted by the fluids from the casing annulus. If the hydraulic force exerted by the fluids from the casing annulus exceeds the forces biasing the piston to the closed position, the piston moves to the open position and fluid from the casing annulus flows into the flow bore and kills the well.