摘要:
In a hydrocarbon synthesis process, nitrogen is cryogenically removed from natural gas to produce a synthesis gas feed comprising methane which is substantially free of nitrogen. This feed is converted to a synthesis gas comprising a mixture of H2 and CO which is substantially free of the HCN and NH3 hydrocarbon synthesis catalyst deactivating nitrogen species. This reduces the need for rejuvenating the hydrocarbon synthesis catalyst. During the cryogenic separation, C2+ hydrocarbons are separated from the natural gas and all or a portion of the separated C2-C4 hydrocarbons are added to the methane feed before it is converted into syngas, to increase syngas production. All or a portion of the separated C2-C3 hydrocarbons may be removed as LPG.
摘要:
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).
摘要:
A process for the extraction and recovery of ethane and heavier hydrocarbons (C2+) from LNG. The process covered by this patent maximizes the utilization of the beneficial cryogenic thermal properties of the LNG to extract and recover C2+ form the LNG using a unique arrangement of heat exchange equipment, a cryogenic fractionation column and processing parameters that essentially eliminates (or greatly reduces) the need for gas compression equipment minimizing capital cost, fuel consumption and electrical power requirements. This invention may be used for one or more of the following purposes: to condition LNG so that send-out gas delivered from an LNG receiving and regasification terminal meets commercial natural gas quality specifications; to condition LNG to make Lean LNG that meets fuel quality specifications and standards required by LNG powered vehicles and other LNG fueled equipment; to condition LNG to make Lean LNG so that it can be used to make CNG meeting specifications and standards for commercial CNG fuel; to recover ethane, propane and/or other hydrocarbons heavier then methane from LNG for revenue enhancement, profit or other commercial reasons.
摘要:
Systems and methods (200) for increasing the efficiency of liquefied natural gas (LNG) production, as well as facilitating coproduction of electric power are described. The systems and methods facilitate producing LNG (206), recovering refrigeration from flash gas and boil-off gas (210) from the LNG and using flash-gas and boil-off gas as fuel to generate electric power (214).
摘要:
Integrated systems are provided for the production of higher hydrocarbon compositions, for example liquid hydrocarbon compositions, from methane using an oxidative coupling of methane system to convert methane to ethylene, followed by conversion of ethylene to selectable higher hydrocarbon products. Integrated systems and processes are provided that process methane through to these higher hydrocarbon products.
摘要:
The present invention pertains to a method for processing gas containing methane and higher hydrocarbons, comprising the steps of • partially condensing and expanding a gas containing methane and higher hydrocarbons from a pressure of 70-120 bar to a pressure of 20-35 bar to obtain at least a C 1 fraction and a C 2 + fraction, • separating the C 2 + fraction from the C 1 fraction, • separating the C 1 fraction into a first fraction which is brought to a pressure of 20-40 bar and a second fraction which is brought to a pressure of 50-70 bar. The C 1 fraction brought to a pressure of 20-40 bar can be subjected to a steam methane reforming process. The C 1 fraction brought to a pressure of 50-70 bar can be subjected to a partial oxidation step. It is preferred for the gas containing methane and higher hydrocarbons to be a natural gas.
摘要:
Provided is a method of producing gas hydrate at a low cost. An acid gas 3 is removed from a natural gas 1, and after dehydration 5 of accompanying water, part of heavy components 7 which do not produce gas hydrate 10 are separated and removed under a relatively high temperature. Moreover, the rest of the heavy components are taken out in a gas hydrate production step 9 together with an excessive portion of light components not contributing to production of the gas hydrate 10, as a fuel gas 11 which is used as a cooling source or a power source for a cooling system in the gas hydrate production step 9.
摘要:
A process for the extraction and recovery of ethane and heavier hydrocarbons (C2+) from LNG. The process covered by this patent maximizes the utilization of the beneficial cryogenic thermal properties of the LNG to extract and recover C2+ form the LNG using a unique arrangement of heat exchange equipment, a cryogenic fractionation column and processing parameters that essentially eliminates (or greatly reduces) the need for gas compression equipment minimizing capital cost, fuel consumption and electrical power requirements. This invention may be used for one or more of the following purposes: to condition LNG so that send-out gas delivered from an LNG receiving and regasification terminal meets commercial natural gas quality specifications; to condition LNG to make Lean LNG that meets fuel quality specifications and standards required by LNG powered vehicles and other LNG fueled equipment; to condition LNG to make Lean LNG so that it can be used to make CNG meeting specifications and standards for commercial CNG fuel; to recover ethane, propane and/or other hydrocarbons heavier then methane from LNG for revenue enhancement, profit or other commercial reasons.
摘要:
Liquefied natural gas (LNG) or components thereof are used as working fluids in power generation cycles in a LNG regasification plant. Especially preferred plant configurations will be able to process LNG of different composition while generating on-spec pipeline gas, CNG, LNG vehicle fuel, and LPG.
摘要:
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).