Chemistry of Gasification: Redox Reactions and Equilibria
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Questions and Answers

What is the Boudouard Reaction?

  • A reaction of methane production with carbon and hydrogen
  • A process of gasification in a fixed bed gasifier
  • A redox reaction of a chemical equilibrium mixture of carbon monoxide and carbon dioxide (correct)
  • A reaction of carbon monoxide and water vapor at high temperatures

What is the product of the Water Shift Reaction?

  • Methane and carbon dioxide
  • Carbon monoxide and water vapor
  • Carbon dioxide and hydrogen (correct)
  • Oxygen and carbon monoxide

What is the chemical formula of methane?

  • COâ‚‚
  • Hâ‚‚O
  • CH₃
  • CHâ‚„ (correct)

What is the primary function of the combustion zone in a fixed bed gasifier?

<p>To provide heat for the other zones (C)</p> Signup and view all the answers

What is the equivalence ratio for the gasification process?

<p>0.2 to 0.4 (D)</p> Signup and view all the answers

What is the application of gasifiers in heat application?

<p>To convert agri-waste to combustible gas for drying and kiln firing (C)</p> Signup and view all the answers

What is the product of the Methane Production reaction?

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

What drives the process in the drying, pyrolysis, and reduction zones?

<p>Heat transfer from the combustion zone (C)</p> Signup and view all the answers

What is the application of gasifiers in mechanical power generation?

<p>To convert agri-waste to combustible gas for running stationary pumps (C)</p> Signup and view all the answers

What is the primary reactant in the Boudouard Reaction?

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

What is the main purpose of the pyrolysis zone in a fixed bed gasifier?

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

What is the energy change associated with the Water Shift Reaction?

<p>+41,200 kJ (D)</p> Signup and view all the answers

What is the purpose of the drying zone in a fixed bed gasifier?

<p>To remove moisture from the fuel (D)</p> Signup and view all the answers

What is the range of equivalence ratio for the gasification process?

<p>0.2 to 0.4 (D)</p> Signup and view all the answers

Which zone in a fixed bed gasifier is responsible for producing combustible gas?

<p>Reduction zone (D)</p> Signup and view all the answers

What is the primary application of gasifiers in agriculture?

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

What is the energy change associated with the Boudouard Reaction?

<p>-172,600 kJ (D)</p> Signup and view all the answers

What is the purpose of the combustion zone in a fixed bed gasifier?

<p>To generate heat for the pyrolysis zone (A)</p> Signup and view all the answers

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