Chemical Engineering Quiz
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Questions and Answers

Which of the following statements about the use of caustic in a dissolution tank is true?

  • Caustic causes temperature to increase when charging a dissolution tank. (correct)
  • Caustic only reacts with solids.
  • Caustic has no effect on temperature.
  • Caustic decreases the temperature when added.

    • The granulator hopper measures weight by the use of a flow meter.

    False

    What type of pump is used to transport aqueous phase solution to the reactors?

    Centrifugal pump

    The additive required for Product 934 SH is ______.

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

    Match the types of drying to their corresponding dryer numbers:

    <p>Diffusion = Dryer 1 Evaporative = Dryer 2</p> Signup and view all the answers

    What is the potential environmental impact of the finished product?

    <p>Both A and C</p> Signup and view all the answers

    Thermal catalyst should be added to the reactor during the propagation process.

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

    What by-product is generated from the process of making post hydro?

    <p>Carbon dioxide</p> Signup and view all the answers

    The equipment used to measure the amount of product transferred to the reactor is called a ______.

    <p>Flow meter</p> Signup and view all the answers

    Match the following inhibitors with their types:

    <p>Acrylic acid = Inhibitor used in acrylamide Copper = Inhibitor used in acrylamide Urea = Inhibitor used in acrylamide Salt = Inhibitor used in acrylamide</p> Signup and view all the answers

    Acrylamide is most dangerous in crystallization (solid) form.

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

    Which of the following statements about MEHQ is true?

    <p>It is considered a known carcinogen in polymerization.</p> Signup and view all the answers

    What is the maximum amount of catalyst approved to be present in the plant?

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

    The average moisture range for product exiting dryer 2 on UP1 and LP2 is _____%.

    <p>10-12</p> Signup and view all the answers

    Match the following dryers with their average moisture ranges:

    <p>Dryer 1 = 28-30% Dryer 2 = 10-12% Dryer 3 = 9-10%</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

    Anionic products have a negative charge.

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

    When should dissolution tank samples be discarded?

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

    We add ______ to the dissolution tank when we use BVE.

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

    Match the following components with their descriptions:

    <p>Anionic products = Negative charge Dissolution tank samples = Discarded when QC is confirmed BVE = Creates more foam Rotary valve motor = Controls valve motion</p> Signup and view all the answers

    What is the primary function of dryer cyclones?

    <p>To allow the dryer air to vent out through the ducts and stack, while returning the product to the dryers.</p> Signup and view all the answers

    Increasing redox catalyst will slow down the kinetic process.

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

    What could cause product to emit from the stack?

    <p>A plugged cyclone, clogged duct work, or high pressure during unloading.</p> Signup and view all the answers

    The dryer moistures are important to ensure __________ of all rotors.

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

    Match the following components with their related functions in a dryer:

    <p>Cyclone = Ventilation and product retention Redox catalyst = Accelerates kinetic processes Moisture control = Maintains product quality Air flow = Causes vibration in certain dryer systems</p> Signup and view all the answers

    What is the primary purpose of conducting a reactor pressure test?

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

    Over sparging can lead to inadequate mixing of catalysts.

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

    List the three main steps in reaction curve polymerization.

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

    Acetic acid is used when adjusting pH on post hydro products to ensure that ______ will not be adversely affected.

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

    Match the following scenarios with their corresponding consequences:

    <p>Insufficient hypo added = Slower reaction curve Reactor set to 0 degrees C = Product consistency may be affected Excessive sparging = Inadequate catalyst mixing Dissolution tanks set to -2 degrees C = Prevention of auto-polymerization</p> Signup and view all the answers

    Draining faster than normal is considered a problem in the process.

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

    What is the purpose of adding acetic acid, caustic, and acrylic acid in the process?

    <p>To adjust the pH of the solution</p> Signup and view all the answers

    Over drying products can cause _____ to fail.

    <p>filter ratio</p> Signup and view all the answers

    What chemical process describes the breakdown of a compound by reaction with water?

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

    Match each process with their function:

    <p>Granulator = Prevents damage to blades Centrifuge = Separates components based on density Catalyst pitch = Contains addition of water Oiling reactors = Facilitates draining gel</p> Signup and view all the answers

    Empty catalyst bags should be discarded.

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

    What could cause high amperage in a granulator?

    <p>Not enough oil flow</p> Signup and view all the answers

    What does a brownish gel color signify in the production process?

    <p>Too much Mohr's salt is being applied to product</p> Signup and view all the answers

    What should be checked first if oversize particles are coming out of the dryer?

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

    Mixing catalyst for too long can cause chemicals to lose potency.

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

    What type of reactors are used at SNF Flopam?

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

    Too much product in a dryer can cause the flame not to light due to ______.

    <p>insufficient airflow</p> Signup and view all the answers

    Match the following terminology to their definitions:

    <p>Flocculation = Separation of a solution, commonly removal of sediment from a fluid Dissolution tank = Container used for dissolving solid materials into liquids On/off solenoid = Device controlling the flow of air to actuators Granulator = Machine that reduces material size for processing</p> Signup and view all the answers

    If moisture levels are high coming out of dryer 1, the operator could be using the _____ drying conditions.

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

    Match the following components with their functions:

    <p>Atomizer = Used to enable lower flow rate of oil Photo eye = Used to sense the presence of flame Pressure regulator = Controls pressure in the system Flow meter = Measures the flow of liquid or gas</p> Signup and view all the answers

    If the pressure in the dryer is too low, which of the following could be a consequence?

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

    The VHM signifies Very High Molecular Weight.

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

    What inhibitors are commonly used in acrylic acid?

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

    The potential cause for a batch not starting could be that the operator skipped adding the ______.

    <p>thermo-catalyst</p> Signup and view all the answers

    Match the substances stored in the process lab flammable cabinet with their reasons:

    <p>TBHP = Can cause a fire if it comes in contact with a reducer Oxygen = Can cause discoloration if it comes in contact with TBHP MEHQ = Used to inhibit polymerization in acrylic acid</p> Signup and view all the answers

    Study Notes

    True/False Questions

    • Smaller granulator screens can cause high amps to occur. (True/False)
    • Centrifugal is the type of pump we use 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 various chemical engineering concepts, including the use of caustics, catalysts, and drying processes. This quiz covers equipment, environmental impacts, and safety considerations associated with chemical production. Perfect for students and professionals in the field of chemical engineering!

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