Gasification
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Questions and Answers

Which of the following is a characteristic of biomass fuels?

  • They are derived from non-living organisms
  • They can be fired alone or in combination with other fuels (correct)
  • They are not renewable
  • They are only used for heat production
  • What is one reason for the increased interest in biomass research and production?

  • Decreased advances in technology
  • Decreased demand for alternative energy
  • Decreased use of cogeneration systems
  • Decreased costs of fossil fuels (correct)
  • What can facilities do with excess electricity or heat produced through the combustion of biomass materials?

  • They can only use it within the facility
  • They can sell it to external clients (correct)
  • They must store it for future use
  • They can convert it into biomass fuels
  • Which technology is used for the conversion of syngas into liquid fuels?

    <p>Fischer-Tropsch process</p> Signup and view all the answers

    What is the main purpose of black liquor gasification in pulp mills?

    <p>To increase energy efficiency</p> Signup and view all the answers

    Which of the following is considered a non-traditional fossil fuel?

    <p>Petroleum coke</p> Signup and view all the answers

    What is the primary use of metallurgical coke?

    <p>Smelting iron ore</p> Signup and view all the answers

    Which type of biomass fuel is commonly used in power plants?

    <p>Wood pellets</p> Signup and view all the answers

    What is the approximate heating value of dry wood bark?

    <p>2000 kJ/kg</p> Signup and view all the answers

    What is the main advantage of using municipal waste as a biomass fuel?

    <p>High heating value</p> Signup and view all the answers

    Which method is used to burn municipal waste in power plants?

    <p>Sorting combustibles before going to the furnace</p> Signup and view all the answers

    Which of the following is the main feedstock for fuel ethanol in North America?

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

    What is the heating value of biogas?

    <p>600 BTU/ft3</p> Signup and view all the answers

    What is the composition of typical biogas?

    <p>55% to 65% methane, 30% to 35% carbon dioxide</p> Signup and view all the answers

    What is the main biomass source of syngas?

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

    Which type of gasifier operates at a high temperature and pressure with extremely turbulent flow?

    <p>Entrained flow gasifier</p> Signup and view all the answers

    What is the advantage of using oil emulsions as a fuel instead of heavy fuel oil (HFO)?

    <p>All of the above</p> Signup and view all the answers

    What is the temperature range at which water systems in concentrated solar power (CSP) operate?

    <p>Up to 440°C</p> Signup and view all the answers

    What is the purpose of using mirrors in concentrated solar power (CSP)?

    <p>To reflect sunlight to a central collector tower</p> Signup and view all the answers

    Which industry can use petroleum coke as a feedstock for metallurgical coke?

    <p>Steel industry</p> Signup and view all the answers

    What is the typical composition of fuel-grade petroleum coke?

    <p>90% C, 4% H2, 2% O2, 1% N, 2% S, and 0.25% ash</p> Signup and view all the answers

    What makes petroleum coke more difficult to ignite and sustain combustion compared to coal?

    <p>Lower volatile content</p> Signup and view all the answers

    What are the main components of syngas produced in gasification plants?

    <p>Carbon monoxide and hydrogen</p> Signup and view all the answers

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