Combustion Gas Analysis Quiz
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Questions and Answers

Which of the following is the correct conversion from percent by volume to parts per million (ppm)?

  • Multiply the percentage by 10,000 (correct)
  • Multiply the percentage by 100
  • Multiply the percentage by 1,000,000
  • Multiply the percentage by 1000

    • What is the conversion of 0.01% CO to parts per million (ppm)?

  • 1 ppm CO
  • 100 ppm CO (correct)
  • 1000 ppm CO
  • 10 ppm CO

    • What is the conversion of 0.05% NO^x to parts per million (ppm)?

  • 5000 ppm NO^x
  • 5 ppm NO^x
  • 50 ppm NO^x
  • 500 ppm NO^x (correct)

    • What is the conversion of 200 ppm NO^x to percent by volume?

    <p>0.02% NO^x</p> Signup and view all the answers

    According to Table 13, what is the trend between excess air and flue gas CO^?

    <p>As excess air increases, flue gas CO^ decreases.</p> Signup and view all the answers

    From Table 13, what is the CO^ percentage for natural gas with 30% excess air?

    <p>10.6%</p> Signup and view all the answers

    What are the CO^ and 0^ percentages by volume for a coal-fired plant with 60% excess air?

    <p>CO^ = 11.3%, 0^ = 8%</p> Signup and view all the answers

    Using the given formulas, what is the percentage of excess air for a coal-fired boiler with a flue gas sample of 002 = 10.4%, CO = 0.2%, 02 = 7.8%, and N2 = 81.6%?

    <p>15.3%</p> Signup and view all the answers

    Which of the following is the primary purpose of flue gas analysis?

    <p>To determine the efficiency and completeness of the combustion process</p> Signup and view all the answers

    Which units are most commonly used to list flue gas constituents?

    <p>Percent volume</p> Signup and view all the answers

    What additional components are included in stack emissions monitoring, in addition to those analyzed in flue gas analysis?

    <p>Particulates, SO-^, and mercury</p> Signup and view all the answers

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