Connection of Processes in Petrochemical Industry
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Questions and Answers

What is the main goal of a petroleum refinery?

  • To maximize production of high demand products (correct)
  • To convert crude oil into natural gas
  • To degrade hydrocarbon molecules
  • To mix hydrocarbon components in crude oil
  • Which of the following is a product that can be obtained directly from a crude oil refinery?

  • Paints and coatings
  • Synthetic fibers
  • Plastics
  • Propane (correct)
  • What determines the type of products produced by a crude oil refinery?

  • The color of the crude oil
  • The equipment installed in the refinery (correct)
  • The weather conditions at the refinery
  • The location of the refinery
  • What is the purpose of separating hydrocarbon components in a refinery?

    <p>To maximize production of high demand products</p> Signup and view all the answers

    Which property increases as the number of carbon atoms in a hydrocarbon chain increases?

    <p>Boiling point</p> Signup and view all the answers

    What is the function of a petroleum refinery?

    <p>To separate hydrocarbon components in crude oil</p> Signup and view all the answers

    Which type of petrochemicals are produced in the cracking process?

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

    What is the purpose of let-down or pressure reducing stations in the steam systems?

    <p>To connect high pressure to low-pressure systems</p> Signup and view all the answers

    What is the function of atomizing steam in a refinery plant?

    <p>To enhance combustion</p> Signup and view all the answers

    What role does synthesis gas (syngas) play in petrochemical production?

    <p>Mixture of CO and H2 used in processes</p> Signup and view all the answers

    Why is high-pressure steam important in a refinery?

    <p>To drive turbines on critical equipment</p> Signup and view all the answers

    What is the range of pressure for low-pressure steam systems in a refinery?

    <p>15 psi to 60 psi</p> Signup and view all the answers

    How is steam used in side stream stripping columns in a refinery?

    <p>To facilitate movement of light products up the column</p> Signup and view all the answers

    What is the function of regeneration steam in a refinery operation?

    <p>To remove impurities or regenerate chemicals and catalysts</p> Signup and view all the answers

    Which utility system do most refineries depend on as a more reliable source than purchased power?

    <p>Steam system</p> Signup and view all the answers

    What is the primary purpose of heating buildings using utility systems in a refinery?

    <p>To provide warmth to buildings and process areas</p> Signup and view all the answers

    What is the purpose of purging equipment with steam in a refinery hydrocarbon unit?

    <p>To clean towers and associated equipment in preparation for vessel entry</p> Signup and view all the answers

    What is the primary function of a heavy oil upgrader in a refinery?

    <p>To convert bitumen into a high-quality, low-sulfur crude oil</p> Signup and view all the answers

    What is the purpose of a diluent recovery unit in heavy oil upgrader operations?

    <p>To remove naturally occurring light gas oil from dilbit</p> Signup and view all the answers

    What is the role of the vacuum distillation unit in the conversion of bitumen?

    <p>To produce lighter liquid product and by-product coke</p> Signup and view all the answers

    What happens to the residue stream from the atmospheric distillation tower in heavy oil upgrader operations?

    <p>It is mixed with heavy vacuum gas oil for hydrotreating</p> Signup and view all the answers

    How does steam tracing help prevent equipment freezing in a refinery during cold weather?

    <p>By introducing steam to thaw frozen equipment and lines</p> Signup and view all the answers

    What is the purpose of mixing steam with the gas flow at the tip of a flare stack in a refinery?

    <p>To control smoke and reduce environmental impact of the flare</p> Signup and view all the answers

    What role does atmospheric distillation play in the heavy oil upgrader process?

    <p>To separate naphtha, light gas oil, heavy gas oil, and residue streams</p> Signup and view all the answers

    What is the final product obtained from the upgrading facility in heavy oil upgrader operations?

    <p>Synthetic crude oils and coke as by-products</p> Signup and view all the answers

    Why is it essential to introduce steam prior to start-up in refinery towers?

    <p>To heat up equipment and remove oxygen from towers</p> Signup and view all the answers

    What is the main principle behind separating crude oil into various fractions?

    <p>Increasing boiling point is linked to increasing molecular weight.</p> Signup and view all the answers

    What happens as the vapour of crude oil cools during the separation process?

    <p>Heavier molecules condense first and are removed.</p> Signup and view all the answers

    What is the purpose of fractionating or distillation towers in the refining process?

    <p>To separate crude oil into different fractions based on boiling points.</p> Signup and view all the answers

    Which stage in the refining process involves altering the molecular structure of compounds?

    <p>Converting separated fractions into product streams.</p> Signup and view all the answers

    What is the purpose of hydrotreating, cracking, forming, and alkylation processes in refining?

    <p>To alter the molecular structure of compounds.</p> Signup and view all the answers

    Why is it important to efficiently heat crude oil before entering the separation process?

    <p>To avoid chemical decomposition of the oil.</p> Signup and view all the answers

    What occurs as the crude oil enters the distillation column?

    <p>The temperature drops below the boiling point of some components.</p> Signup and view all the answers

    What happens to vapors rising up in the distillation column?

    <p>They condense into liquid and fall back down.</p> Signup and view all the answers

    What are recovered at lower temperatures in distillation processes?

    <p>Liquid petroleum gases like butane.</p> Signup and view all the answers

    What follows after recovering specific fractions in distillation?

    <p>Further processing to remove contaminants like sulfur and carbon dioxide.</p> Signup and view all the answers

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