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Biofuel/Biomethane

Biofuels are derived from recently living biological material such as crops (either high in sugar or vegetable oil) or from materials such as wood or landfill gas. Biomethane is a near-pure source of methane produced from biogas or solid biomass.

The increased environmental costs of traditional fuels and the uncertainty of their supply has prompted greater use of biofuels for power generation, transportation, and heating. However, such fuels have varying energy content and gas composition, making it challenging for gas processing, transportation, and end use. As the number of biofuel/biomethane injection points grows, the need for gas quality measurements becomes more critical.

Required gas quality measurements include measurements of impurities or undesired components, such as moisture (H2O) content, carbon dioxide (CO2) content, and concentrations of sulfur compounds – including hydrogen sulfide (H2S), carbonyl sulfide (COS), and methyl mercaptans (CH3SH).

 

  • Application +


    Transmission Pipelines

    Gas is transported from the processing plant to underground storage sites, industrial users and city gate metering stations via a large network of pipelines. As the gas travels along the pipeline, it passes through metering points where it is sold from one party to another – this is the custody transfer point.
    Understanding the gas quality at custody transfer points is essential.

    Recommended products: 3050-OLV , 5100 , 5100HD , 5100P, 933

    Dehydration

    The dehydration process removes water vapor in natural gas. Several different methodologies are used to accomplish this, including compression, phase separation, absorption and adsorption. Tri-ethylene glycol contactors and molecular sieve dryers are two of the more common dehydration methods for gases. Moisture measurement is critical to optimize the drying process and ensure that the gas is dried to the required specification. Analysis is typically performed at the outlet of the drying process.

    Recommended products: 3050-DO , 5100 , 5100HD , 5100P

    Sweetening

    Sweetening is the process whereby hydrogen sulfide (H2S) and carbon dioxide (CO2) are removed from the natural gas. Both H2S and CO2 promote corrosion through the formation of acids in the presence of water and can cause stress cracking in the pipelines. 

    Recommended products: 5100 , 5100HD, 933


    Landfill Gas

    Landfill gas is generated from the decomposition process of organic materials contained in a landfill. Similar to conventional natural gas, landfill gas can be transmitted in a pipeline network for use in transportation, power generation, or at industrial end users. Unlike conventional natural gas, landfill gas typically contains a lower concentration of methane and higher concentrations of impurities, such as carbon dioxide (CO2). Landfill gas must be treated to remove unwanted impurities, such as CO2, hydrogen sulfide (H2S), or water vapor (H2O), prior to injection into a pipeline or transmission to an end use.

    Recommended products: 3050-OLV, 5100 , 5100HD , 5100P, 933