Disclosed are methods, systems, and computer-readable mediums for determining the composition of gaseous fuel. An initial gaseous fuel stream is provided that includes methane, non-methane hydrocarbons, and inert gases. Air is mixed into the initial fuel stream upstream of a first catalyst. The first catalyst oxidizes only the non-methane hydrocarbons of the initial fuel stream to produce a resultant fuel stream comprising methane and inert gases. Air is mixed into the resultant fuel stream downstream of the first catalyst and upstream of a second catalyst. The second catalyst oxidizes only the methane hydrocarbons of the resultant fuel stream to produce an output fuel stream. Mole ratios of the methane, the non-methane hydrocarbons, and the inert gases of the initial fuel stream are each determined.

Disclosed are methods, systems, and computer-readable mediums for determining the composition of gaseous fuel. An initial gaseous fuel stream is provided that includes methane, non-methane hydrocarbons, and inert gases. Air is mixed into the initial fuel stream upstream of a first catalyst. The first catalyst oxidizes only the non-methane hydrocarbons of the initial fuel stream to produce a resultant fuel stream comprising methane and inert gases. Air is mixed into the resultant fuel stream downstream of the first catalyst and upstream of a second catalyst. The second catalyst oxidizes only the methane hydrocarbons of the resultant fuel stream to produce an output fuel stream. Mole ratios of the methane, the non-methane hydrocarbons, and the inert gases of the initial fuel stream are each determined.

The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).

The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).

A resistance furnace provides an improved upper and lower electrode construction with significantly increased coolant flow. The lower electrode has a tip design that significantly lowers the electrode tip temperature during an analysis. The upper and lower electrodes also cooperate with an improved crucible design to significantly reduce the power required to fuse a specimen contained in the crucible. The furnace uniformly heats the floor and lower side walls of a crucible, which lowers the power requirement for specimen fusion and provides higher structural benefits to provide consistent analysis and manufacturing yields. The crucible has a cylindrical body and pedestal base with an annular smoothly curved concave indentation therebetween.

A resistance furnace provides an improved upper and lower electrode construction with significantly increased coolant flow. The lower electrode has a tip design that significantly lowers the electrode tip temperature during an analysis. The upper and lower electrodes also cooperate with an improved crucible design to significantly reduce the power required to fuse a specimen contained in the crucible. The furnace uniformly heats the floor and lower side walls of a crucible, which lowers the power requirement for specimen fusion and provides higher structural benefits to provide consistent analysis and manufacturing yields. The crucible has a cylindrical body and pedestal base with an annular smoothly curved concave indentation therebetween.

A pyrolysis system for evaluating a source rock sample from a subterranean reservoir and methods are described. The pyrolysis system includes a reactor vessel including a body with an open end, a cover attachable to the body, a heating system, a collector assembly. The body and the cover define a sealable chamber; a source rock sample holder sized to be received inside the sealable chamber; and a sensor system. The sensor system includes a direct sensor assembly associated with the source rock sample holder, sized to be received inside the sealable chamber, and operable to measure properties of the source rock sample in the source rock sample holder; and a pyrolysis products sensor assembly in fluid communication with the collector assembly of the reactor vessel.

A compact rock pyrolytic analysis and evaluation instrument comprises a sample introduction system, a pyrolytic furnace, a bypass system, a total hydrocarbon amount and methane content analysis system, a signal acquisition control system and a computer. The pyrolytic furnace is respectively connected with the sample introduction system and the bypass system, the total hydrocarbon amount and methane content analysis system is connected with the bypass system, the signal acquisition control system is used for controlling and connecting the total hydrocarbon amount and methane content analysis system, and meanwhile, the signal acquisition control system is communicated with the computer. The disclosure simultaneously detects the total amount of hydrocarbons produced by rock pyrolysis and the content of methane gas produced by rock pyrolysis, and the obtained data are reliable.

A compact rock pyrolytic analysis and evaluation instrument comprises a sample introduction system, a pyrolytic furnace, a bypass system, a total hydrocarbon amount and methane content analysis system, a signal acquisition control system and a computer. The pyrolytic furnace is respectively connected with the sample introduction system and the bypass system, the total hydrocarbon amount and methane content analysis system is connected with the bypass system, the signal acquisition control system is used for controlling and connecting the total hydrocarbon amount and methane content analysis system, and meanwhile, the signal acquisition control system is communicated with the computer. The disclosure simultaneously detects the total amount of hydrocarbons produced by rock pyrolysis and the content of methane gas produced by rock pyrolysis, and the obtained data are reliable.

A device is provided for use in analytical instrumentation that provides continuous transfer of a known molar quantity of gas from a source having an unknown gas mixture and varying pressure. In addition to the upstream and downstream paths of typical flow control devices, the device has a midstream path to introduce a carrier gas at a known elevated pressure. The device has at least three equal-volume ballast vessels and a valve arrangement to cycle the ballasts through at least three states: fill, equilibrate, and empty. The ballasts fill with the upstream gas, pressurize and equilibrate at the midstream pressure, and empty to the downstream path. The cycle of each ballast is timed in phased relationship to the other ballasts to keep the flow relatively uninterrupted; as one fills, another equilibrates, and another empties.