Acrylamide Production Process Quiz
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Questions and Answers

What inhibitors are used in acrylamide?

  • Urea and salt (correct)
  • Acrylic acid and caustic (correct)
  • Boric acid and ammonia
  • Copper and oxygen

    • What is free monomer?

  • A type of catalyst used in reactions
  • Unreacted or un-polymerized monomers used to make polyacrylamide gel (correct)
  • The temperature at which polymerization starts
  • The percentage of liquid that drains during the U. test

    • What piece of equipment measures the amount of product transferred to the reactor?

  • Weight cells
  • Pressure indicator
  • Flow meter (correct)
  • Thermal conductivity meter

    • When should thermal catalyst be added to the reactor?

    <p>During the propagation process</p> Signup and view all the answers

    If a reactor foams, what could happen?

    <p>Could result in a dead reaction</p> Signup and view all the answers

    What does BVE create more of in the dissolution tank?

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

    What type of charge do anionic products have?

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

    When are dissolution tank samples discarded?

    <p>Once a corresponding reactor sample to QC silo blend is confirmed</p> Signup and view all the answers

    In which form is acrylamide considered most dangerous?

    <p>Crystalline form</p> Signup and view all the answers

    When should you take a gel sample?

    <p>When we fail any kind of QC result and the product becomes non-conformed</p> Signup and view all the answers

    Is it acceptable to use homemade tools for unclogging equipment?

    <p>No, that practice is unsafe</p> Signup and view all the answers

    What do we add to the dissolution tank when we use BVE?

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

    Which chemical in polymerization is considered a known carcinogen?

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

    What is the approved amount of catalyst that can be in the plant at any given time?

    <p>48 hours' worth</p> Signup and view all the answers

    What is a significant hazard associated with using nitrogen?

    <p>It can lead to asphyxiation</p> Signup and view all the answers

    What can occur when smaller granulator screens are used?

    <p>High amps</p> Signup and view all the answers

    Which type of pump is used to transport aqueous phase solutions to the reactors?

    <p>Centrifugal pump</p> Signup and view all the answers

    What requires the additive BVE in its formulation?

    <p>Product 934 SH</p> Signup and view all the answers

    What effect does caustic have when charged into a dissolution tank?

    <p>Increases temperature</p> Signup and view all the answers

    Why should aqueous solutions be kept within the dike?

    <p>For proper disposal and containment</p> Signup and view all the answers

    What is the primary function of dryer cyclones?

    <p>They vent dryer air through ducts and stack while returning the product.</p> Signup and view all the answers

    What happens when the redox catalyst is increased?

    <p>It leads to a quicker kinetic response.</p> Signup and view all the answers

    If products are emitting from the stack, what could be the cause?

    <p>A cyclone being plugged.</p> Signup and view all the answers

    Why is monitoring dryer moistures critical?

    <p>It ensures compatibility of all rotors.</p> Signup and view all the answers

    What causes the kason to vibrate?

    <p>Air flow from cyclones and the center spiral gasket.</p> Signup and view all the answers

    What is the primary purpose of a reactor pressure test?

    <p>To test for leaks</p> Signup and view all the answers

    Which are the correct steps in the reaction curve polymerization process?

    <p>Initiation, propagation, and termination</p> Signup and view all the answers

    What may result from adding too little hypo to a reaction?

    <p>Slower reaction curve</p> Signup and view all the answers

    Why is acetic acid chosen for adjusting pH in post hydro products?

    <p>It prevents adverse effects on anionicity</p> Signup and view all the answers

    What is the reason for setting dissolution tanks to -2 degrees C during polymerization at 0 degrees C?

    <p>To prevent auto-polymerization and ensure consistency</p> Signup and view all the answers

    Which of the following statements is true regarding the chemical breakdown of a compound?

    <p>Hydrolysis is the chemical breakdown due to reaction with water.</p> Signup and view all the answers

    What effect can over drying products have on the filtration process?

    <p>It can cause the filter ratio to fail.</p> Signup and view all the answers

    What role does caustic play in the production process?

    <p>It gives the product its charge.</p> Signup and view all the answers

    What is the main purpose of oiling reactors during production?

    <p>To enhance the process of draining out the gel.</p> Signup and view all the answers

    What information is determined by the production sheet?

    <p>How much catalyst each batch receives.</p> Signup and view all the answers

    What type of reactors are used at SNT Flopa?

    <p>Tube reactors</p> Signup and view all the answers

    What could be a cause of high moisture levels coming out of dryer 1?

    <p>Operator could be using the wrong drying conditions</p> Signup and view all the answers

    What does a brownish gel color signify?

    <p>Glycol could be leaking through the exchanger</p> Signup and view all the answers

    Why should catalyst not be mixed for too long?

    <p>Mixing too long can cause chemicals to lose potency</p> Signup and view all the answers

    What must be present inside the granulator for a lower flow rate of oil?

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

    Should empty catalyst bags be discarded?

    <p>Yes, they should be discarded.</p> Signup and view all the answers

    What is the primary reason for taking dissolution tank samples?

    <p>Due to issues and drying upsets.</p> Signup and view all the answers

    Why is it important to close manual valves on reactors and dissolution tanks?

    <p>To ensure proper draw-down temperature.</p> Signup and view all the answers

    What could cause the finished product to test high?

    <p>Acrylamide leaking by an actuator valve.</p> Signup and view all the answers

    What should be checked first if oversize particles are produced from the dryer?

    <p>The granulator screen.</p> Signup and view all the answers

    What problem could arise if the pressure is too low in the dryer?

    <p>High moistures</p> Signup and view all the answers

    What could cause a low reading on the pressure transmitter in the dryer?

    <p>Pressure transmitter could be clog</p> Signup and view all the answers

    What does the term VHM represent?

    <p>Very high molecular weight</p> Signup and view all the answers

    Why is TBHP stored in the process lab flammable cabinet?

    <p>It can cause a fire if it comes in contact with a reducer</p> Signup and view all the answers

    If a batch will not start, what could be a potential issue?

    <p>Operator could have skipped adding thermo-catalyst</p> Signup and view all the answers

    Study Notes

    Safety and Procedures

    • Smaller granulator screens can cause high amps to occur. (True/False)
    • Centrifugal is the type of pump used to transport aqueous phase solution to the reactors. (True/False)
    • Product 934 SH requires the additive BVE. (True/False)
    • Caustic causes temperature to increase when charging a dissolution tank. (True/False)
    • Aqueous solution should never be allowed outside of the dike so it can be contained and disposed of properly. (True/False)
    • The granulator hopper measure weight by the use of a flow meter. (True/False)
    • Hypo is used as a chain-transfer agent but has a reducer properties. (True/False)
    • The purpose of the Kason is to help transport powder through piping. (True/False)
    • Diffusion is the type of drying done in dryer 1. (True/False)
    • Evaporative is the type of drying done in dryer 2. (True/False)
    • Only powders shift supervisors are authorized to work in solenoid control panels. (True/False)

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    Description

    Test your knowledge on the acrylamide production process with this quiz. Covering important concepts such as inhibitors, catalysts, and safety protocols, this assessment is perfect for those studying chemical engineering or polymer science. Prepare to explore various technical aspects related to acrylamide and its production equipment.

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