Abstract:
The present invention relates to a method for running natural gas powered combustion systems, such as an internal combustion engine, a furnace, a fired heater, a power plant, an incinerator, and the like. In one embodiment of the present method, heavier hydrocarbons are separated from a natural gas feedstream in a PSA unit to provide the light hydrocarbon gas stream which is combined with an ethane plus tail gas stream from a liquefaction unit to fuel the combustion system. This method eliminates flaring any gas and minimizes the size requirements for the PSA unit.
Abstract:
A system for the processing of a hydrocarbon flare gas. An input gas stream contains a gas component and a liquid component. A knock-out drum separates the gas component from the liquid component. An eductor has a motive inlet, a suction inlet, and a discharge outlet. The separated liquid component is introduced into the suction inlet of the eductor. A high- pressure gas stream is introduced into the motive inlet of the eductor. The high-pressure gas stream has a pressure sufficient to draw the separated liquid component from the knock-out drum and through the discharge outlet.
Abstract:
A method, system and production and storage facility is disclosed for offshore LPG and LNG processing of associated gases. The system includes a first production facility and a second production and storage facility. The first facility receives and processes produced fluids to produce crude oil, water and rich associated gases. The second facility includes a gas treatment unit for processing the rich associated gases to remove contaminants and produce a treated gas stream of hydrocarbons. The second facility also has at least one LPG and/or LNG production unit for producing one of LPG and/or LNG from the treated gas stream. At least one storage tank on the second facility stores at least one of the LPG and/or LNG. The second production facility may be a retrofit LNG or LPG carrier. The treatment unit, LPG and/or LNG production and needed offloading facilities and equipment can be added to the LNG/LPG carrier. Existing storage tanks can be modified as needed or else new storage tanks can also be added.
Abstract:
A process (10) for producing hydrocarbons from natural gas includes, in a cryogenic separation stage (16), cryogenically separating the natural gas to produce at least a methane stream and natural gas liquids, in a reforming stage (20), reforming the methane stream to produce a synthesis gas which includes at least CO and H2, and in a Fischer-Tropsch hydrocarbon synthesis stage (22), converting at least some of the CO and H2 into a Fischer-Tropsch product which includes hydrocarbons. A Fischer- Tropsch tail gas which includes at least CO and H2, methane and heavier than methane hydrocarbons, is separated from the Fischer-Tropsch product in a Fischer-Tropsch product separation stage (24). At least a portion of the Fischer-Tropsch tail gas is recycled to the cryogenic separation stage (16), where the Fischer-Tropsch tail gas is cryogenically separated into two or more streams.
Abstract:
This invention concerns a novel process and apparatus for producing relatively small quantities of liquefied natural gas (LNG) by processing a side stream (102) at a conventional NGL expander gas plant.
Abstract:
In an integral incorporated cascade-type process the cooling mixture from the penultimate stage (1B) of the single cycle compressor (1) is fed into a distillation apparatus (5), the overhead vapour of which is cooled (at 24) to a temperature considerably less than ambient temperature. The vapour is then separated into two phases (at 6C); the vapour phase supplies the last stage (1C) of the compressor, and the liquid phase provides a cooling fluid for the hot part (8) of the thermal exchange line (7).
Abstract:
A system for the processing of a hydrocarbon flare gas. An input gas stream contains a gas component and a liquid component. A knock-out drum separates the gas component from the liquid component. An eductor has a motive inlet, a suction inlet, and a discharge outlet. The separated liquid component is introduced into the suction inlet of the eductor. A high- pressure gas stream is introduced into the motive inlet of the eductor. The high-pressure gas stream has a pressure sufficient to draw the separated liquid component from the knock-out drum and through the discharge outlet.
Abstract:
The present invention is a field-deployable system for separating methane and natural gas liquids (NGLs) from a raw gas stream comprising a compressor; a dehydrator; a refrigerator having one or more stages; and a separation subsystem adapted to separate the raw gas stream into three useable product streams: (1) a methane stream that is at least 70% methane, (2) an ethane-rich stream, and (3) a NGLs stream having a vapor pressure of no more than 17 bar (250 psi) at 38°C (100°F). The methane stream is sufficiently lean to be useable in existing natural gas engines without modification. The NGLs stream has a sufficiently low vapor pressure to be transportable in standard propane containers. The ethane-rich stream may be utilized within the system itself to power its own operations. The system can be utilized to reduce flaring from liquids-rich gas production sites, produce natural gas liquids for transport, and provide dry methane gas suitable for use in existing field generators.