Exam 1 Lecture

Question 1

True/False: Any changed needs to be reviewed.

Answer 1

True

Question 2

True/False: Management of change must be documented.

Answer 2

True

Question 3

What is the difference between leading metrics and lagging metrics?

Answer 3

Leading metrics are more proactive, they help you get a sense for how you’re performing but now count bad things

Question 4

What would you want to do if there are a bunch of temporary MOCs that are not being closed out?

Answer 4

Talk to the operators of the plant and maintenance

Question 5

Who are most often doing the MOCs?

Answer 5

The operators of the plant

Question 6

True/False: Organizational changes can affect things beyond the process.

Answer 6

True

Question 7

True/False: The loss of DIPB, Propylene, and fuel gas from the partial condenser in the cumene process have little impact on process economics.

Answer 7

False

Question 8

How do we control the loss of DIPB?

Answer 8

Only by manipulating reactor conditions to make the reaction less favorable

Question 9

Explain the relationship between conversion and temperature for the cumene process.

Answer 9

Conversion of propylene generally increases with reaction temperature due to higher reaction rates. However, excessively high temperatures can lead to unwanted side reactions.

Question 10

Explain the relationship between conversion and residence time for the cumene process.

Answer 10

Longer residence times allow for higher conversion because the reactants have more time to react. However, beyond an optimal point, undesired secondary reactions

Question 11

Explain the relationship between selectivity and reaction temperature for the cumene process?

Answer 11

Selectivity toward cumene typically decreases at very high temperatures because of side reactions

Question 12

Explain the relationship between selectivity and residence time for the cumene process?

Answer 12

If residence time is too short, selectivity is high but conversion is low.