Natural Gas Plants Overview
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Questions and Answers

What is the predominant constituent of natural gas?

  • Butane
  • Methane (correct)
  • Ethane
  • Propane

    • What are some of the hydrocarbon constituents found in natural gas, in decreasing percentages?

  • Ethane, propane, butane, pentane
  • Ethane, propane, butane, hexane (correct)
  • Methane, ethane, butane, propane
  • Propane, butane, pentane, hexane

    • What contaminants can be found in the natural gas stream?

  • Methanol, nitrogen, water vapor
  • Carbon dioxide, hydrogen sulfide, helium (correct)
  • Water vapor, carbon monoxide, sulfur dioxide
  • Methanol, helium, nitrogen

    • Which of the following is NOT a main function of natural gas plants mentioned in the text?

    <p>Extract and transport liquid natural gasoline</p> Signup and view all the answers

    Which facility function depends on the nature of the gas well and the composition of the gas?

    <p>Re-pressurizing the gas</p> Signup and view all the answers

    What is another term used to refer to liquid natural gasoline found in natural gas streams?

    <p>Condensate</p> Signup and view all the answers

    What is the Claus reaction for the production of elemental sulfur?

    <p>2H2S + SO2 → 3S + 2H2O</p> Signup and view all the answers

    How is nitrogen typically removed from the gas stream in a natural gas processing plant?

    <p>Cryogenic distillation</p> Signup and view all the answers

    What is the main purpose of the Claus process in natural gas processing?

    <p>To recover elemental sulfur</p> Signup and view all the answers

    In the liquefaction stage of natural gas processing, what is the typical temperature range for sub-cooling?

    <p>-100 to -125°C</p> Signup and view all the answers

    Which gas is most commonly used as a refrigerant in the pre-cooling stage of natural gas liquefaction?

    <p>Propane</p> Signup and view all the answers

    What is the primary method for hydrocarbon recovery in modern natural gas processing plants?

    <p>Cryogenic turboexpander followed by a fractionating process</p> Signup and view all the answers

    What is the primary purpose of the absorption process in natural gas processing?

    <p>Absorption removes hydrogen sulfide and carbon dioxide (acid gases).</p> Signup and view all the answers

    What is the main purpose of acid gas removal in natural gas processing?

    <p>To prevent corrosive damage to equipment and pipelines.</p> Signup and view all the answers

    What is the purpose of stabilization in the natural gas processing sequence?

    <p>To flash off gases from the liquid hydrocarbons at low pressure.</p> Signup and view all the answers

    What is the primary method used for cryogenic removal of high concentrations of CO2 in natural gas processing?

    <p>Expansion turbine</p> Signup and view all the answers

    How is dehydration accomplished in the natural gas processing sequence?

    <p>By absorbing water through contact with a glycol mixture</p> Signup and view all the answers

    Which stage involves sending hydrogen sulfide removed from natural gas to the sulfur plant for sulfur recovery?

    <p>Absorption</p> Signup and view all the answers

    In which stage does cooling of the inlet gas occur in a typical compression process?

    <p>Inlet Compression</p> Signup and view all the answers

    What is one of the purposes of recompression in natural gas processing?

    <p>To increase pressure for sales or fuel gas use.</p> Signup and view all the answers

    What is a common method used in acid gas removal processes in natural gas processing?

    <p>Fractionators</p> Signup and view all the answers

    Which type of compressor is typically used for reservoir pressure maintenance gas injection in natural gas processing?

    <p>Reciprocating compressors</p> Signup and view all the answers

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