Abstract: A method for continuously treating a regeneration gas stream used to regenerate a molecular sieve adsorption vessel is disclosed. The regeneration gas stream is cooled in a cooler to a temperature suitable to condense liquids therein. A separator removes liquids condensed in the regeneration gas stream. The regeneration gas stream is compressed in a compressor. The regeneration gas stream is flowed through the cooler, the separator, and the compressor when the compressor is operational. The regeneration gas stream is flowed through the second cooler and the second separator but not the compressor when the compressor is not operational, thereby enabling continuous treatment of the regeneration gas stream.

Abstract: A method for continuously treating a regeneration gas stream used to regenerate a molecular sieve adsorption vessel is disclosed. The regeneration gas stream is cooled in a cooler to a temperature suitable to condense liquids therein. A separator removes liquids condensed in the regeneration gas stream. The regeneration gas stream is compressed in a compressor. The regeneration gas stream is flowed through the cooler, the separator, and the compressor when the compressor is operational. The regeneration gas stream is flowed through the second cooler and the second separator but not the compressor when the compressor is not operational, thereby enabling continuous treatment of the regeneration gas stream.

Abstract: Embodiments of this invention relate to a process for liquefaction of natural gas and other methane-rich gas streams, and more particularly to a process for producing liquefied natural gas (LNG). In a first step of the process, a first fraction of the feed gas is withdrawn, compressed to a pressure greater than or equal to 1500 psia, cooled and expanded to a lower pressure to cool the withdrawn first fraction. The remaining fraction of the feed stream is cooled by indirect heat exchange with the expanded first fraction in a first heat exchange process. In a second step a separate stream comprising flash vapor is compressed, cooled and expanded to a lower pressure providing another cold stream. This cold stream is used to cool the remaining feed gas stream in a second indirect heat exchange process. The expanded stream exiting from the second heat exchange process is used for supplemental cooling in the first indirect heat exchange step.

Abstract: A vessel for transporting liquefied natural gas is provided. The vessel generally includes a gas transfer system for on-loading and off-loading natural gas to and from the vessel at essentially ambient temperature. The vessel further includes a gas processing facility for selectively providing liquefaction and regasification of the natural gas. The vessel also includes a containment structure for containing the liquefied natural gas during transport. The vessel may be a marine vessel or a barge vessel for transporting LNG over water, or a trailer vessel for transporting LNG overthe-road. A method for transporting LNG is also provided, that provides on-loading of natural gas onto a vessel, condensing the natural gas, storing the gas on the vessel in liquefied form, transporting the gas to an import terminal, vaporizing the gas, and off-loading the gas at the terminal.