摘要:
A method for analyzing various components in a natural gas pipeline with the aid of a computer controlled gas chromatograph comprising the steps of: (a) providing the computer control unit with a data base for operating the gas chromatograph including at least: (1) periodically causing a sample of the natural gas to be supplied to the gas chromatograph; (2) operating the gas chromatograph to analyze the various components in the natural gas stream; (3) computing the amount of the various components in the natural gas stream; and (4) reporting the amount of components in the natural gas stream.
摘要:
Systems and methods to provide low carbon intensity (CI) transportation fuels through one or more targeted reductions of carbon emissions based upon an analysis of carbon emissions associated with a combination of various options for feedstock procurement, feedstock refining, processing, or transformation, and fuel product distribution pathways to end users. Such options are selected to maintain the total CI (carbon emissions per unit energy) of the transportation fuel below a pre-selected threshold that defines an upper limit of CI for the transportation fuel.
摘要:
Systems and methods to provide low carbon intensity (CI) transportation fuels through one or more targeted reductions of carbon emissions based upon an analysis of carbon emissions associated with a combination of various options for feedstock procurement, feedstock refining, processing, or transformation, and fuel product distribution pathways to end users. Such options are selected to maintain the total CI (carbon emissions per unit energy) of the transportation fuel below a pre-selected threshold that defines an upper limit of CI for the transportation fuel.
摘要:
A calculation device is configured to calculate a value relating to a combustible target gas containing miscellaneous gas components. The calculation device includes: a heating value calculation unit configured to calculate a heating value of the target gas on the basis of converted heating values obtained from a refractive index and a density of the target gas, respectively; a miscellaneous gas total approximate-concentration calculation unit configured to calculate an approximate concentration of the miscellaneous gas components on the basis of the converted heating values; and a virtual basic-heating-value calculation unit configured to calculate, on the basis of the heating value and the approximate concentration, a virtual basic heating value of the target gas when the miscellaneous gas components are assumed to be removed.
摘要:
A measuring device for analyzing a composition of a fuel gas including at least a first gas and a second gas different from the first gas, the first gas and the second gas absorbing an infrared light in at least one common first wavelength range in the electromagnetic spectrum, the measuring device including: an intermittent first infrared emitter; a first sample chamber for receiving the fuel gas; a first detector including at least the first gas and operating according to a photoacoustic effect; and a first filter chamber containing the second gas. The first sample chamber, the first detector, and the first filter chamber are arranged relative to each other such that an infrared light emitted from the first infrared emitter passes through the first sample chamber and the first filter chamber and impinges on the first detector.
摘要:
A single-wavelength light source is configured to generate an excitation light source. A sample holder that defines an inner cavity is capable of holding a sample and includes a surface transparent to the excitation light source. One or more mounts are attached to at least one of the light source or the sample holder. The mounts are configured to change an incident angle of the excitation light source on the surface. One or more optical components are positioned in a path of a fluorescence emission emitted from the surface and guide the fluorescence emission to a detector. A detector detects an intensity of the fluorescence emission.
摘要:
A concentration measuring device includes a circulation passage, an aspirator, a differential pressure sensor, and a control unit. The aspirator is disposed in a fuel tank and is connected to the circulation passage. While a gas flows from a gaseous layer within a fuel tank through the circulation passage due to a negative pressure generated in the aspirator, the differential pressure sensor measures a pressure difference of the gas within the circulation passage between an upstream side of a narrowed part, having a narrower passage area than an adjacent portion of the circulation passage, and a downstream side of the narrowed part. The control unit is configured to calculate a density of the fuel vapor from the pressure difference of the gas and to calculate a concentration of the fuel vapor from the density of the fuel vapor.
摘要:
A method includes providing a length of pipeline that has a housing defining a central bore extending the length of the pipe and a space formed within the housing and extending the length of the pipe. At least one condition within the space is continuously monitored within the space to detect in real time if a change in the housing occurs.
摘要:
Systems and methods of optimizing enhanced oil recovery fluids in the form of a hydrocarbon foam, an emulsion based foam, an emulsion, and a gelled enhanced oil recovery fluid, each comprising Y-Grade NGL, which is an unfractionated hydrocarbon mixture that comprises ethane, propane, butane, isobutane, and pentane plus, wherein the unfractionated hydrocarbon mixture is a byproduct of a condensed and demethanized hydrocarbon stream.
摘要:
An assembly comprising an upstream pipe, a downstream pipe, and a system (1) for measuring variation in the gas content of a two-phase flow, the assembly including: an insulating sheath (6), an upstream ground (2), a measurement electrode (3), a guard electrode (7), and a downstream ground (4) arranged in succession in the insulating sheath (6) and each presenting an identical internal section defining an internal flow duct for a two-phase flow from the upstream ground (2) towards the downstream ground (4) in line with the upstream pipe and the downstream pipe, the guard electrode (7) being subjected to the same potential as the measurement electrode (3), the measurement electrode (3) measuring the capacitance of the two-phase flow relative to the upstream ground (2) and variation in that capacitance, the upstream ground (2) and the downstream ground (4) being electrically connected to the upstream pipe and to the downstream pipe, respectively.