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 (A)</p> Signup and view all the answers

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

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

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

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

What is the primary use of metallurgical coke?

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

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

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

What is the approximate heating value of dry wood bark?

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

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

<p>High heating value (D)</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 (C)</p> Signup and view all the answers

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

<p>Corn (C)</p> Signup and view all the answers

What is the heating value of biogas?

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

What is the composition of typical biogas?

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

What is the main biomass source of syngas?

<p>Biomass (D)</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 (C)</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 (D)</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 (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 (D)</p> Signup and view all the answers

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

<p>Steel industry (A)</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 (D)</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 (C)</p> Signup and view all the answers

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

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

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