Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
38 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
A decanter is often referred to as a simple separator. Explain why. |
It relies on specific gravity in its separation process |
|
|
|
What physical property of a material determines if it will float on water or not? |
Specific gravity |
|
|
|
What is the term for the point in the decanter where the organic material is floating on the water? |
The interface |
|
|
|
What is the total level of the decanter vessel? |
The total level is measured from the bottom of the tank to the top of the weir. |
|
|
|
What is the interface level? |
The interface level is the level at which the organic material is floating on the water. |
|
|
|
Why is the temperature of the incoming feed important? |
Higher temperatures increase molecular activity and hinder the interfacing process. In some cases, emulsions are formed instead of a relatively clean interface level. |
|
|
|
Relative to the total level in the up - stream side of the decanter, at approximately what point is the interface level controlled and why at this level? |
Around 50% because it gives it time to separate. |
|
|
|
What is the relationship between FI 27, FI30, and FI 31? |
They all indicate material balance. |
|
|
If the level indication displayed by LIC 31 is in error, 20% high, what affect would you expect it to have on LIC 30? Why? |
It would not have any effect. They are both separately controlled. |
|
|
If the flow at FI 30 is at 4,300 pph and the flow at FI 31 is 49,200, what percent of the incoming flow is water? |
8% less of a percentage than before. 4,300 ÷ 53,500 = 8% - 45% = 37% water. |
|
|
|
At normal feed rates, what is the organic side outlet flow if the percentage of water in the feed is 11%? |
11% - 100% = 89%, 53,500 × 89% = 47,615. The Organic Outlet Flow is 47,615 pph. |
(Normal Feed Rates) 53,500, 11% (Percent Water), what is the Organic side Outlet Flow? |
|
|
If you raise the set point for LIC 30 by 10%, what would you expect to see at FI 31? Assume that the separation continues to occur normally. |
A very slight temporary increase until it settles. |
|
|
|
If you raise the set point for LIC 30 by 10%, what would you expect to see at FI 30? Assume that the separation continues to occur normally. |
A very slight, temporary decrease before settling back to normal. |
|
|
|
What are the normal operating conditions of FI 27? On the Decanter? (For both pph and percentage.) |
Value: 53,500 pph Instrument indication: 76% |
|
|
|
What are the normal operating conditions of LIC 30? On the Decanter? |
Value and Indication: 50% |
|
|
|
What are the normal operating conditions of FI 30? On the Decanter? (For both pph and percentage.) |
Value: 4,500pph Instrument Indication: 45% |
|
|
|
What are the normal operating conditions of LIC 31? On the Decanter? |
Value and Percentage: 50% |
|
|
|
What are the normal operating conditions of FI 31? On the Decanter? (For both pph and percentage.) |
Value: 49,000pph Instrument Indication: 70% |
|
|
|
A vessel in which controlled chemical reaction takes place |
Reactor |
|
|
|
Chemical reactions that generate heat. |
Exothermic |
|
|
|
Chemical reactions that require energy input. |
Endothermic |
|
|
|
Promote chemical reactions without becoming part of the product. |
Catalyst |
|
|
|
The mixing of chemical reactor feeds for contact with the catalyst. |
Agitation |
|
|
|
These are used to slow down or stop a reaction. |
Inhibitors |
|
|
|
List two uncontrolled reactions that you are aware of outside of the PTEC processes. |
1. Oxidation 2. The weather |
|
|
|
List two controlled reactions that you are aware of outside of the PTECH Processes. |
1. Cumbustion 2. Hydrogen Peroxide and Potassium Iodide (causes a marshmallow reaction commonly known as elephants toothpaste) |
|
|
|
When referring to the relationship between pressure and temperature in an uncontrolled reaction, how might the relationship differ in a controlled reaction, or will it at all? |
The relationship will change but we can control how much it changes. |
|
|
|
What is the normal relationship between temperature and pressure? |
Higher pressure causes a rise in temperature while lower pressure causes a reduction in temperature. The reverse also holds true. |
|
|
|
What are the Normal Operating Conditions for FIC 10 in both value and percentage? |
Current Value: 25,000 Percentage: 70% |
|
|
|
What are the Normal Operating Conditions for FIC 11 in both value and percentage?
|
Current Value: 25,000 Percentage: 70% |
|
|
|
What are the Normal Operating Conditions for FIC 12 in both value and percentage? |
Current Value: 2,500 Percentage: 70% |
|
|
|
What is the Normal Temperature Indication for TIC 13? |
315°F |
|
|
|
What is the Normal Operating Condition for FI 22 in both current value and percentage? |
Current Value: 65,000 Percentage: 70% |
|
|
|
What is the Normal Operating Condition for FI 24 in both current value and percentage?
|
Current Value: 114,000 Percentage: 70% |
|
|
|
What is the Normal Operating Condition for FIC 25 in both current value and percentage? |
Current Value: 49,000 Percentage: 70% |
|
|
|
Explain the material balance in the reaction process. |
What goes in, Must come out. in=out. |
|
|
|
Explain the relationship between the level in the reactor, as controlled by LIC 14, and the reaction contact time. |
The level is sufficient enough for proper reaction time. |
|
|
|
list flows and explain the balance. |
1. FI 11 + FI 10 = FI 25 2. FI 22 + FI 25 = FI 24 |
|
