Additional Equipment for Heat Transfer in Boilers
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Questions and Answers

What is the principal energy transfer medium that the industry depends on for its process applications?

  • Ammonia
  • Water (correct)
  • Thermal fluids
  • Natural gas

Why is heat crucial in hydrocarbon processing?

  • To cool down the feedstocks
  • To eliminate the need for chemical reactions
  • To separate saleable end products (correct)
  • To reduce the need for thermal fluids

Which industry skill set is essential for effectively managing thermal operations?

  • Process Engineer
  • Power Engineer (correct)
  • Chemical Engineer
  • Mechanical Engineer

What are common thermal processing stages used throughout industry?

<p>Generation, distribution, end-use, and recovery of thermal fluids (B)</p> Signup and view all the answers

What are some basic feedstocks that can be used in thermal processes?

<p>Sweet and sour natural gas, conventional crudes, heavy crudes, and oil sands (D)</p> Signup and view all the answers

What is the purpose of the crystallization process?

<p>To separate crystalline substances from non-crystalline ones (C)</p> Signup and view all the answers

In which type of process is steam often used to reduce solids buildup on heat exchangers?

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

What is the primary function of a stripping tower in industrial processes?

<p>To pull unwanted contaminants from a process fluid (B)</p> Signup and view all the answers

Which process involves separating compounds based on their solubility differences in complex mixtures?

<p>Solvent Extraction (D)</p> Signup and view all the answers

What is the main purpose of quenching with steam in industrial processes?

<p>To cool and stop high-temperature reaction processes (C)</p> Signup and view all the answers

Which type of process removes crystalline waxes from petroleum or edible oils?

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

What is the purpose of pressure regulation using steam in industrial reactions?

<p>To control the pressure of a reaction by injection into a fixed volume vessel (C)</p> Signup and view all the answers

Which process converts one compound into another through a chemical reaction?

<p>Chemical Conversion Processes (D)</p> Signup and view all the answers

What is one of the main purposes of dilution using steam?

<p>To reduce solids buildup on heat exchangers. (A)</p> Signup and view all the answers

In what type of process are absorbing agents used as filtering media?

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

What is one of the main advantages of using steam as an energy transfer medium?

<p>High heat capacity (D)</p> Signup and view all the answers

In what form is most of the heat contained in steam?

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

What is the primary function of a heat transfer fluid system in industrial settings?

<p>To circulate heat transfer liquid (D)</p> Signup and view all the answers

When is a steam system most often chosen over a heat transfer fluid system?

<p>When temperature is below freezing (D)</p> Signup and view all the answers

Which type of energy conversion system uses compressed hydrocarbons to produce heated gases for thermal energy transfer?

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

What is the primary purpose of a flash drum in a vapour phase heat transfer fluid system?

<p>To separate vapor from liquid (D)</p> Signup and view all the answers

What distinguishes a heat recovery steam generator (HRSG) from a traditional boiler?

<p>The form of the energy transfer medium produced (A)</p> Signup and view all the answers

Why is steam an ideal energy transport medium?

<p>Ability to efficiently transfer latent heat at constant temperature (A)</p> Signup and view all the answers

What governs the choice between a steam system and a heat transfer fluid system for industrial processes?

<p>Thermal requirements of the process (D)</p> Signup and view all the answers

How does a gas turbine system differ from a heat transfer fluid system in terms of energy conversion?

<p>Uses compressed hydrocarbons directly for heating (B)</p> Signup and view all the answers

What is the role of an economizer in a boiler system?

<p>Recycles thermal energy in combustion gases to feedwater (A)</p> Signup and view all the answers

Why is appropriate insulation important in a thermal distribution system?

<p>To increase plant safety by reducing surface temperatures (D)</p> Signup and view all the answers

What is the purpose of steam accumulators in a distribution system?

<p>To trap steam in the system for efficient operation (C)</p> Signup and view all the answers

How do steam separators contribute to efficient steam distribution?

<p>By removing water droplets from wet steam (D)</p> Signup and view all the answers

What is the function of steam traps during system operation?

<p>Enable air to escape during system startup (B)</p> Signup and view all the answers

Why are back-pressure turbines sometimes used in distribution systems?

<p>To extract energy from high-pressure steam (B)</p> Signup and view all the answers

What purpose does an ancillary equipment serve in a generating system?

<p>Ensuring feedwater quality and process safety (D)</p> Signup and view all the answers

Why are pumps used in heat transfer fluid systems?

<p>To provide pressure for fluid movement (B)</p> Signup and view all the answers

What factor affects the efficiency of a distribution system other than insulation?

<p>Component separation technologies (D)</p> Signup and view all the answers

What is the function of a combustion air preheater?

<p>Transfer excess heat into incoming combustion air (B)</p> Signup and view all the answers

What is the main purpose of molecular size reduction in the chemical industry?

<p>To convert large molecular size surplus products into smaller ones in demand (B)</p> Signup and view all the answers

In the context of chemical structure adjustment, what is the impact of creating a more branched product in gasoline manufacture?

<p>It increases the octane number (C)</p> Signup and view all the answers

What is the purpose of a condensate return system in a steam system?

<p>To collect and treat the condensate for reuse (B)</p> Signup and view all the answers

Which equipment is used to increase the feedwater pressure above boiler pressure in a steam system?

<p>Boiler feed pumps (C)</p> Signup and view all the answers

What is the purpose of a deaerator in a steam system?

<p>To strip oxygen and non-condensable gases from condensate (C)</p> Signup and view all the answers

How does direct-fired heaters using gas compare to steam or thermal fluid in terms of recovery and reuse processes?

<p>Direct-fired heaters are more efficient in recovery and reuse compared to steam or thermal fluid (A)</p> Signup and view all the answers

What happens if any condensate is not returned in a steam system?

<p>Makeup water with additional costs is used to replace it (D)</p> Signup and view all the answers

How are heat transfer fluids usually returned in comparison to condensate in a steam system?

<p>They are returned through low-pressure piping after simple filtering (A)</p> Signup and view all the answers

What is one main advantage of using heat transfer fluids over condensate in terms of return and recycling processes?

<p>They operate at higher pressures, simplifying their return journey (B)</p> Signup and view all the answers
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