問題一覧
1
The P&ID will use __ and __ to represent each instrument and how they are interconnected in the process.
symbols and circles
2
Process flow diagrams generally do not include
All answers correct
3
Process flow diagrams of multiple process units within a large industrial plant will usually contain less detail and may be called
schematic flow diagrams
4
Typically, process flow diagrams of a single unit process will include the following
No correct answers
5
What Identifies the type and function of the device?
tag numbers
6
Which items includes in PFD?
All answers are correct
7
The activity of placing a worth on the structure where the worth might be its cost, its safety, or its net energy consumption.
Evaluation
8
The systematic searching over the allowed operating conditions to improve the evaluation as much as possible.
Optimization
9
Purpose of safety valves
To prevent the destruction of equipment
10
PFD uses for Developing of ………………..
P&ID, Systemization and Commissioning & Start-up Sequence.
11
What can you find in the PFD?
Detail of valve and line number.
12
It is understood as the pressure developed by the vapor above the liquid under equilibrium conditions at a certain temperature
Saturated vapor pressure
13
Which formula is used to determine the saturated vapor pressure?
Ashworth’s formula
14
What is the dependence of temperature and volume?
Directly proportional
15
The process that moves energy from one object to another when they are touching physically
Conduction
16
The process that transfers energy by the movement of large numbers of particles in the same direction within a liquid or gas
Convection
17
They are based on the zero method of measuring the electromotive force developed by the TFT
Potentiometers
18
More portable liquid thermometer was made around ________ but they were still lacking accuracy (scary, grumpy looking guy)
1700
19
The temperature scale commonly used in Canada and many other countries is called the Celsius scale. This was developed by …
Anders Celsius
20
The base of temperature degree standards was for comparison on the properties of …
Water
21
The temperature scale of Kelvin was named in honour of …
William Thomson
22
Why the temperature degree is changed in thermometer?
Particle movement
23
The flow of energy from an object at a higher temperature to an object at a lower temperature
Heat
24
Total random kinetic energy of particles in an object
Thermal energy
25
The amount of energy needed to raise the temperature of 1 gram of water by 1oC
Calorie
26
The amount of energy required to raise the temperature of 1 gram of a substance by 1oC
Specific Heat
27
Materials that transfer energy easily
Conductors
28
Materials that do not transfer energy easily
Insulators
29
Type of thermometer where the action of expansion thermometers is based on the use of the dependence of the specific volume of a substance on the temperature of measured medium in which it is placed.
Expansion thermometers
30
Type of thermometer when the sensitive element of the thermometer is made in the form of a spiral or flat spring, consisting of two plates of different metals, welded along the entire length.
Bimetal thermometers
31
The principle of operation of these thermometers is based on the use of the dependence of the pressure of the working substance with a constant volume on temperature
Gauge thermometers
32
These measuring devices consist of a thermoelectric temperature transducer (TPT), an electrical meter, and connecting wires
Thermoelectric thermometers
33
It is a measuring device consisting of a resistance thermoconverter (TC), an electrical measuring device and connecting wires
Resistance thermometers
34
The principle of operation of these thermometers is based on the interaction between the conductor (frame) through which electric current flows and the magnetic field of a permanent magnet.
Millivoltmeters
35
This type of temperature control is the most basic form and applies continuous heating/cooling with no regard for the actual temperature output.
Open loop control
36
In this type of temperature control the output temperature is constantly measured and adjusted to maintain a constant output at the desired temperature.
Closed loop control
37
They are low cost, simple controllers that are versatile enough for rugged, reliable process control in harsh industrial environments including those with significant electrical noise. Controller display is typically a knob dial.
Analog controllers
38
The sum of materials that leave the distillation column or tower must be equal to the feed that enters the tower states for:
Material balance
39
A distillation systems material balance can be controlled by controlling
The flows of materials
40
How the highest temperature in distillation column is called?
Critical temperature
41
What is the purpose of gas sweetening?
To remove acidic components from raw natural gas
42
What is the maximum allowable H2S content in residue gas before it reaches the fuel market?
57 ppm
43
Which of the following is NOT a reason for removing contaminants from the feed gas?
The reduction of the heating value of natural gas
44
Which classification of gas sweetening methods uses caustic soda or lime carbonate as the sweetening agent?
Non-regenerative methods
45
Which type of sweetening agent is most commonly used in liquid sweetening methods?
Alkanolamines
46
What is the main disadvantage of non-regenerative methods?
They are not economical to operate in the long run
47
Which type of gas sweetening method uses sweetening solutions discovered and developed by the gas processing industry?
Regenerative methods
48
What is the primary concern with carbon dioxide in natural gas?
It can cause corrosion in the presence of free water
49
Which of the following compounds is NOT mentioned as a sulphurous compound that may be contained in natural gas?
Carbon dioxide (CO2)
50
Why are specifications for gas quality justified?
To ensure the gas meets legal requirements
51
Which of the following processes is considered the foremost among the regenerative liquid processes for absorbing acid gases?
Amine processes
52
What type of sweetening agents are used in amine processes?
Aqueous organic amines
53
How are ethanolamines classified?
Weak bases
54
Which of the following is NOT a member of the ethanolamines series?
Methylethanolamine (MEE)
55
What is the primary advantage of using MEA in gas purification processes?
High absorbing capacity for toxic gases
56
What is the preferred solution concentration of MEA in water?
15 to 20%
57
How do DEA systems compare to MEA systems in terms of operating losses?
DEA systems have lower operating losses
58
What gas purity level can DEA systems achieve in terms of H2S content?
12 ppm H2S
59
What is one advantage of using DEA over MEA or other solutions?
Lower hydrocarbon contamination
60
In which concentration range are diethanolamine solutions typically used?
25 to 30%