Chemical Engineering Safety and Processes Quiz

<p>The temperature increases. (A)</p> Signup and view all the answers

<p>To transport powder through piping. (A)</p> Signup and view all the answers

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

<p>No, it is not acceptable (C)</p> Signup and view all the answers

<p>The finished product can damage forest health (A), The finished product is harmful to marine life (B)</p> Signup and view all the answers

<p>MEHQ is considered a known carcinogen (B)</p> Signup and view all the answers

<p>Acrylic acid and caustic (A)</p> Signup and view all the answers

<p>After the addition of TBP (C)</p> Signup and view all the answers

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

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

<p>It is a flammable gas (C)</p> Signup and view all the answers

<p>Unreacted or un-polymerized monomers used in gels (A)</p> Signup and view all the answers

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

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

<p>After confirming a corresponding reactor sample to QC silo blend (D)</p> Signup and view all the answers

<p>When any kind of QC result fails and the product becomes non-conformed (B)</p> Signup and view all the answers

<p>In the top side of the dryer shell (C)</p> Signup and view all the answers

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

<p>It will result in a faster kinetic reaction. (B)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>To assure that all rotors are compatible. (C)</p> Signup and view all the answers

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

<p>All of the above (D)</p> Signup and view all the answers

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

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

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

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

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

<p>It can lead to filter ratio failure (D)</p> Signup and view all the answers

<p>Chemical breakdown due to reaction with water (A)</p> Signup and view all the answers

<p>Both during and after the drawdown process (D)</p> Signup and view all the answers

<p>To assist with draining out the gel (A)</p> Signup and view all the answers

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

<p>Check the granulator screen (A)</p> Signup and view all the answers

<p>Granulator high amps (B)</p> Signup and view all the answers

<p>Close manual valves (B)</p> Signup and view all the answers

<p>Separation of a solution to remove sediment (B)</p> Signup and view all the answers

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

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

<p>Insufficient catalyst in the reaction (B)</p> Signup and view all the answers

<p>Photo eye needs to be replaced (C)</p> Signup and view all the answers

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

<p>Too much moisture in the product (C), Obstruction in the product exit (D)</p> Signup and view all the answers

<p>The pressure transmitter may be malfunctioning (A)</p> Signup and view all the answers

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

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

<p>It can ignite easily when in contact with certain substances (B)</p> Signup and view all the answers

Using smaller screens in a granulator can lead to higher electrical current (amps) due to increased resistance from finer material.

Centrifugal pumps are commonly used to move liquids, like aqueous solutions, to reactors. The impeller spins, creating pressure to move the fluid.

Product 934 SH requires the addition of BVE (an ingredient or additive) during its manufacturing process.

Caustic materials, when added to a dissolution tank, can cause a rise in temperature due to an exothermic reaction.

Aqueous solutions should be kept within designated areas like dikes as they pose potential hazards and require proper disposal methods.

Unreacted monomers, molecules used to create polyacrylamide gel, that remain in the final product.

The act of adding a catalyst to a reaction, typically at a specific point during the process, to accelerate or initiate the reaction.

The liquid that drains out from a sample of polyacrylamide during a specific test, often used to measure the quality or consistency of the product.

A device used to measure the volume of product that is transferred to a reactor, often used to control and accurately monitor the reaction process.

An undesired substance or compound that is formed during a chemical reaction, often as a byproduct of the main product.

Acrylamide is most dangerous in its solid form, not in its liquid form.

Using homemade tools to clear equipment clogs is unsafe and can cause further damage or unexpected reactions.

MEHQ is used in the polymerization process and has been proven to be a known carcinogen.

Only 48 hours worth of catalyst is allowed to be stored in the plant at any given time.

Nitrogen, though not flammable, can suffocate in enclosed spaces.

A substance added to the dissolution tank to reduce the amount of foam produced during processing.

Anionic products possess a negative charge due to the presence of negatively charged ions or molecules.

Dissolution tank samples are discarded once a corresponding reactor sample from the QC silo blend is confirmed to ensure the product quality is consistent across all stages.

A gel sample should be taken when QC results indicate that the product might not meet standards, leading to a potential nonconformity.

The pressure transmitter in the dryer is located near the exit screw, where the dried product is discharged from the dryer.

The chemical breakdown of a compound due to reaction with water.

Caustic materials contribute to the charge of the product.

Over-drying products can hinder the flow of the product through a filter, causing it to fail.

The production sheet provides instructions for the amount of catalyst needed for each batch.

Reverse osmosis water is used to dilute the catalyst in the pitchers, ensuring consistency.

The cyclones in a dryer separate product from the dryer air, allowing the air to vent out while the product returns to the dryer.

Adding more redox catalyst to a reaction speeds up the chemical process, making it happen faster.

Product escaping from the dryer stack indicates a problem, such as a blocked cyclone, clogged ducts, or excessive pressure during loading or unloading.

Moisture levels in a dryer are important to maintain consistent product quality and prevent off-specification material. They also help control the time the product spends inside the dryer.

The vibrations in a Kason come from air flow through the dryer cyclones and a special spiral gasket in the center.

Caustic soda, also known as sodium hydroxide, is a corrosive and highly reactive chemical. It can cause severe chemical burns and damage to skin, eyes, and respiratory systems.

Over-sparging, a technique used in polymerization, refers to adding an excessive amount of gas to a reaction mixture. This can lead to poor catalyst mixing, erratic curves, and ultimately, an off-spec product.

Initiation, propagation, and termination are the basic steps involved in polymerization, a chemical reaction that forms large chains of molecules. Initiation starts the chain reaction, propagation adds more monomers to the chain, and termination stops the chain growth.

Acetic acid, a mild organic acid, is used to adjust pH on post hydro products because it does not negatively affect their anionicity. Anionicity measures the ability of a substance to attract anions, and maintaining its stability is critical for product performance.

The reactor pressure test is crucial in preventing leaks in the reactor. Leaks can lead to safety hazards, product contamination, and loss of pressure, which drastically impacts the polymerization process.

Empty catalyst bags should be disposed of properly, not simply discarded.

Dissolution tank samples are collected for quality control and process monitoring, not just during upsets or issues.

Closing manual valves on reactors and dissolution tanks helps ensure that the correct draw-down temperature is achieved and maintained.

A leak of acrylamide from an actuator valve could result in higher than expected acrylamide levels in the finished product.

If oversize particles are coming out of the dryer, the problem is more likely in the granulator, not the dryer screen.

A reactor designed for continuous-flow processes where substances pass through a tube, ideal for consistent and controlled reactions.

A reactor used in the production of polyacrylamide gel. It involves mixing monomers and additives, controlling conditions like temperature and pH, and activating polymerization processes.

This could occur due to faulty dryer settings, leading to insufficient drying and a higher moisture content in the product.

A brownish gel color can indicate a glycol leak from the exchanger, potentially contaminating the product.

Prolonged mixing of catalyst can reduce its effectiveness, impacting the polymerization process. This can result in lower product quality.

Low pressure in the dryer can lead to problems with the product exiting the dryer properly, potentially resulting in moisture issues.

If the pressure transmitter in the dryer reads low, it could be due to a clog in the transmitter itself, a slower production rate, or a clogged granulator fan.

VHM stands for Very High Molecular Weight, indicating a polymer with very large molecules.

Acrylic acid is stabilized with inhibitors such as MEHQ (Monomethyl Ether Hydroquinone) and oxygen to prevent polymerization during storage.

A batch may not start due to several factors, including missing thermo-catalyst, excessive foam in the dissolution tank, or an incorrect pH level.