Additional Equipment for Heat Transfer in Boilers
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Questions and Answers

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

  • Natural gas
  • Thermal fluids
  • Hydrocarbon feedstocks
  • Steam (correct)

Which stage of thermal processing involves creating and separating saleable end products?

  • End-use of thermal fluids (correct)
  • Distribution of thermal fluids
  • Recovery of thermal fluids
  • Generation of thermal fluids

What is essential for the success of hydrocarbon processing in terms of physical processes and chemical reactions?

  • Thermal fluids (correct)
  • Ammonia compression refrigeration cycle
  • Steam
  • Hydrocarbon feedstocks

In hydrocarbon processing, what are common feedstocks that can be used for thermal operations?

<p>Heavy crudes and oil sands (C)</p> Signup and view all the answers

Which industry professional requires unique skill sets to effectively manage thermal operations in hydrocarbon processing?

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

What is the purpose of the ammonia compression refrigeration cycle as described in the text?

<p>To explain the purpose of each major component in the system (D)</p> Signup and view all the answers

Which type of processes add sufficient energy to enact a chemical change in compounds?

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

In the process of distillation, compounds are separated into fractions based on:

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

What is the primary purpose of the process of quenching?

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

Which process involves separating substances by using differences in solubility between compounds in mixtures?

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

What is the purpose of stripping towers in industrial processes?

<p>To remove contaminants from process fluids (B)</p> Signup and view all the answers

Which type of process uses a crystalline substance separated from a non-crystalline one?

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

In which type of process is steam often used to dilute a process gas?

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

Which type of processes do not add enough energy to enact a chemical change in compounds?

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

What is the purpose of pressure regulation in industrial processes?

<p>To control the pressure of a reaction (D)</p> Signup and view all the answers

Why is an economizer considered an integral element of the generation section in boilers?

<p>To recycle remaining thermal energy in combustion gases (C)</p> Signup and view all the answers

How do combustion air preheaters contribute to reducing energy requirements in boilers?

<p>By transferring excess heat from end-use to combustion air (A)</p> Signup and view all the answers

Why is appropriate insulation important for a thermal distribution system?

<p>To reduce the transfer of heat to plant areas (B)</p> Signup and view all the answers

What is the purpose of isolation valves in distribution lines?

<p>To separate distribution lines by pressure (C)</p> Signup and view all the answers

In what scenario are back-pressure turbines used in steam systems?

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

What role do steam separators play in steam systems that generate wet steam?

<p>They remove water droplets from the steam (C)</p> Signup and view all the answers

How do steam accumulators function in a distribution system?

<p>By trapping steam within the system to discharge excess energy (C)</p> Signup and view all the answers

What is the main purpose of steam traps in a distribution system?

<p>To allow condensate to pass while trapping steam (D)</p> Signup and view all the answers

How do distribution systems regulate delivery of thermal energy efficiently?

<p>By achieving proper balance of steam pressure and efficient condensate return systems (C)</p> Signup and view all the answers

What is one factor that affects the efficiency of distribution systems according to the text?

<p>Thermal insulation, piping, and component separation technologies (A)</p> Signup and view all the answers

What is the main purpose of molecular size reduction?

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

In gasoline manufacture, what effect does a more branched product have?

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

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

<p>To maximize recovery and reuse of condensate (A)</p> Signup and view all the answers

What is typically done with heat transfer fluids after use?

<p>Returned through low-pressure piping after a filtering process (D)</p> Signup and view all the answers

Why is chemical structure adjustment important in some industries?

<p>To rearrange compounds to create different products or improve performance (C)</p> Signup and view all the answers

What happens to any condensate not returned in a steam system?

<p>It is replaced by makeup water with additional costs (C)</p> Signup and view all the answers

How is energy extracted using gas as the energy transfer medium?

<p>By preheating combustion air with a heat exchanger (C)</p> Signup and view all the answers

What is the role of boiler feed pumps in a steam system?

<p>To inject feedwater into the boiler above boiler pressure (B)</p> Signup and view all the answers

What is the main difference in the return process between condensate and heat transfer fluids?

<p>Heat transfer fluids are condensed before returning (C)</p> Signup and view all the answers

What is the primary reason behind the popularity of steam as an energy transfer medium?

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

Why is steam considered efficient for transferring energy?

<p>It can transfer large quantities of energy at a constant temperature (A)</p> Signup and view all the answers

In what form can energy be extracted from steam?

<p>As mechanical work through a turbine or as heat for process heating (A)</p> Signup and view all the answers

Which temperature range would typically lead to the preference of using a Heat Transfer Fluid (HTF) system over steam?

<p>Above 175°C (B)</p> Signup and view all the answers

What is the purpose of a vapour phase system in a Heat Transfer Fluid (HTF) system?

<p>To remove excess heat from the fluid (B)</p> Signup and view all the answers

What determines whether a steam system or a Heat Transfer Fluid (HTF) system is chosen for an industrial process?

<p>The thermal requirements of the process (B)</p> Signup and view all the answers

How are hot oil systems (Heat Transfer Fluid systems) circulated in industrial setups?

<p>By a closed-loop circulation system under atmospheric pressure (A)</p> Signup and view all the answers

What is the fundamental purpose of generating heat in most industrial plants?

<p>To generate heat that can then be transferred into a heat transfer medium (B)</p> Signup and view all the answers

What type of processes are typically carried out within each plant in terms of thermal energy?

<p>Generation, distribution, end-use processes, and recovery/re-use of excess energy/fluid (B)</p> Signup and view all the answers

Which equipment is typically involved in enabling completion of each of the four types of processes within an industrial plant?

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