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PENG 4th Class > Unit 12 Plant Configurations > Flashcards

Unit 12 Plant Configurations Flashcards

1
Q

The purpose of dehydration in natural gas treatment plants is to:

Select one:

a. Remove water from the main gas stream
b. Lower the temperature of the hot condensate
c. Remove hydrogen sulfide from the hydrocarbons
d. Remove the liquid hydrocarbons from the gas

A

a. Remove water from the main gas stream

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2
Q

Wood pulp production by chemical means requires the removal of the _____ in order to obtain the cellulose fiber.

Select one:

a. Lignin
b. Tannin
c. Cellulose
d. Sodium sulfite

A

a. Lignin

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3
Q

In a chemical pulping process, lignin is removed from chipped wood in the:

Select one:

a. Recovery boiler
b. Blow tank
c. Hogger
d. Digester

A

d. Digester

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4
Q 
Usually, \_\_\_\_\_\_\_\_ installed on a hot oil system.
Select one:
a. Four burners are
b. Three pumps are
c. Only one pump is
d. Two pumps are
A

d. Two pumps are

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5
Q

Hydrogen sulfide and carbon dioxide are removed from natural gas:

Select one:

a. By superheating the gas
b. In the inlet separator
c. In the dehydrator
d. Using amine

A

d. Using amine

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6
Q

Degradation of heat transfer fluid of a hot oil system will begin to occur if:
Select one:
a. The oil becomes too viscous
b. The oil is allowed to churn in the circulating pump
c. The oil temperature is above a specified range, for an extended period of time
d. The oil filter is not serviced regularly

A

c. The oil temperature is above a specified range, for an extended period of time

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7
Q

What is the primary use of the ground wood pulp, produced by the mechanical process?

Select one:

a. Cardboard
b. Soft paper products
c. High quality white paper
d. Newsprint

A

d. Newsprint

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8
Q

The purpose of “cooking” in a pulp mill is to:

Select one:

a. Soften the wood chips
b. Remove the lignin from the wood chips
c. Heat the wood chips
d. Remove the fiber from the wood chips

A

b. Remove the lignin from the wood chips

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9
Q 
A high stack temperature in a hot oil heater may indicate: 
Select one:
a. Improper fuel-air ratio
b. Excessive oil flow 
c. A tube failure  
d. Inadequate combustion air
A

c. A tube failure

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10
Q

The purpose of stabilization in natural gas treatment plants is to:

Select one:

a. Stabilize the gas from the contactor
b. Flash off lighter gases at low pressure, from the liquid hydrocarbons
c. Prevent lighter hydrocarbons from separating from the heavier hydrocarbons
d. Flash off the gases at high pressure from the liquids

A

b. Flash off lighter gases at low pressure, from the liquid hydrocarbons

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11
Q

The two most common in-situ methods of oil recovery from bituminous sands are

Select one:

a. steam assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS)
b. mining and steam assisted cyclic stimulation (SACS)
c. overburden removal (OR) and cyclic steam stimulation (CSS)
d. mining and steam assisted gravity drainage (SAGD)

A

a. steam assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS)

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12
Q 
When Teflon is used as part of the mechanical seal, the maximum temperature of oil that can be pumped by a hot oil pump is: 
Select one:
a. 100°C 
b. 250°C 
c. 150°C 
d. 200°C
A

d. 200°C

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13
Q 
\_\_\_\_\_ are installed to prevent hot oil from spreading beyond the confines of a hot oil heater in the event of a ruptured tube.
Select one:
a. Dikes
b. Tunnels
c. Ditches
d. By-pass pipes
A

a. Dikes

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14
Q 
The approximate efficiency of a radiant hot oil heater is: 
Select one:
a. 25 to 35% 
b. 30 to 40% 
c. 40 to 50%  
d. 70 to 80%
A

c. 40 to 50%

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15
Q

An emergency shutdown (ESD) of a hot oil system may be activated
Select one:
a. Manually
b. Only by the shift charge engineer
c. Only by a first responder
d. By high excess O2, measured at the stack

A

a. Manually

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16
Q

The raw natural gas from the wells, for use in a gas processing plant, is known as:

Select one:

a. Sour gas
b. Feedstock
c. Sweet gas
d. Liquefied petroleum gas

A

b. Feedstock

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17
Q 
In order to keep some hot oil flowing through a standby pump, it is important that the \_\_\_\_\_\_\_ valve of the standby pump be left open. 
Select one:
a. Bypass 
b. Suction  
c. Vent 
d. Relief
A

b. Suction

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18
Q

The two chief methods of chemical pulping are the ___________ processes.

Select one:

a. white liquor and black liquor
b. Sulfate and sulfite
c. strong liquor and weak liquor
d. Kraft and thermo-mechanical pulping

A

b. Sulfate and sulfite

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19
Q

The two main categories of wood pulping processes are the mechanical process and the _______ process.

Select one:

a. Thermal
b. Hydraulic
c. Kraft
d. Chemical

A

d. Chemical

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20
Q 
Convection type hot oil heaters ae approximately \_\_\_\_\_\_\_\_\_\_\_efficient.
Select one:
a. 25 to 35%
b. 90 to 95%
c. 85 to 95%
d. 75 to 85%
A

d. 75 to 85%

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21
Q 
The \_\_\_\_\_ tubes of a fired hot oil heater have fins on their outer surfaces. 
Select one:
a. Extended type
b. Fire 
c. Water
d. Radiant
A

a. Extended type

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22
Q

Some trees, such as pines, Douglas fir, and tamarack, cannot be successfully made into pulp by the ___________ process.

Select one:

a. Mechanical
b. Kraft
c. Sulfate
d. Sulfite

A

d. Sulfite

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23
Q

Heavy oil recovered using SAGD or CSS is properly referred to as

Select one:

a. crude
b. bitumen
c. tar
d. bottoms

A

b. bitumen

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24
Q

To transport bitumen through a pipeline, it must be diluted with

Select one:

a. produced water
b. diluent
c. varsol
d. water

A

b. diluent

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25
Q

A control room operator notices that the stack temperature of a hot oil heater is increasing rapidly. The operator should:
Select one:
a. Activate the emergency shutdown.
b. Call the shift charge engineer for advice.
c. Send an operator out to see if there is smoke coming from the oil heater stack.
d. Wait to see if the temperature returns to normal.

A

a. Activate the emergency shutdown.

26
Q 
The automatic shutdown devices on a hot oil system are also called: 
Select one:
a. Interlocks  
b. ASDs 
c. Fail safes 
d. Lock-ups
A

a. Interlocks

27
Q

The hydrocarbons in natural gas may include:

Select one:

a. Carbon dioxide
b. Ethane
c. Nitrogen
d. Hydrogen sulfide

A

b. Ethane

28
Q 
The inlet of a hot oil pump is located: 
Select one:
a. Above the surge tank 
b. As close as possible to the heater outlet 
c. Inside the surge tank 
d. Below the expansion tank
A

d. Below the expansion tank

29
Q 
Hot oils are used as heat transfer media for systems operating up to: 
Select one:
a. 300°C  
b. 200°C 
c. 400°C  
d. 100°C
A

a. 300°C

30
Q

The mechanical seal material in a hot oil pump determines the:
Select one:
a. Maximum temperature of the oil that can be pumped
b. Duty cycle of the pump
c. Maximum speed the pump can operate at
d. Maximum viscosity of oil that can be pumped

A

a. Maximum temperature of the oil that can be pumped

31
Q 
The inner walls and floor of a fired heater furnace are lined with: 
Select one:
a. Fiberglass insulation 
b. Asbestos blocks 
c. Ceramic tile 
d. Refractory
A

d. Refractory

32
Q

The purpose of an inlet separator in a natural gas plant is to remove the:

Select one:

a. Undissolved gases from the hydrocarbons
b. Liquids from the gas
c. Hydrogen sulfide from the gas
d. Entrained solids from the liquids

A

b. Liquids from the gas

33
Q

The convection tubes of a horizontal direct-fired hot oil heater are found
Select one:
a. in the firebox
b. in the windbox
c. in the flue gas flow, downstream of the furnace
d. embedded in the refractory lining

A

c. in the flue gas flow, downstream of the furnace

34
Q 
The discharge from the safety valve on a hot oil system is directed to: 
Select one:
a. The pump suction 
b. The surge tank  
c. A floor drain  
d. The roof of the boiler house
A

b. The surge tank

35
Q

In order to avoid unstable burner operation in the event of high or low fuel gas pressure, hot oil heaters are equipped with:
Select one:
a. An emergency shutdown device
b. A high stack temperature switch
c. High and low fuel gas pressure cut-offs
d. Fuel gas surge vessels

A

c. High and low fuel gas pressure cut-offs

36
Q

In a pulp mill, wood chips are cooked in a digester using

Select one:

a. Weak black liquor
b. Strong black liquor
c. Green liquor
d. White liquor

A

d. White liquor

37
Q

The purpose of the absorber in a natural gas plant is to:

Select one:

a. Remove condensate from the gas
b. Absorb all the hydrocarbons from the gas
c. Recover hydrocarbons from concentrated amine
d. Remove hydrogen sulfide and carbon dioxide from the gas

A

d. Remove hydrogen sulfide and carbon dioxide from the gas

38
Q

The type of pump normally used with a hot oil system is a:
Select one:
a. Multistage reciprocating pump
b. Conventional, single stage centrifugal pump
c. Rotary screw pump
d. Sliding vane pump

A

b. Conventional, single stage centrifugal pump

39
Q 
Hot oil high temperature shutdown (TSDH) switches are installed on the:  
Select one:
a. Inlet line to the oil heater 
b. Inlet line to the pump 
c. Surge tank inlet line 
d. Outlet line from the heater
A

d. Outlet line from the heater

40
Q

In a pulp mill, chipping is done to prepare the logs for:

Select one:

a. Dehydration
b. Cooking
c. Production of oriented strand board
d. Debarking

A

b. Cooking

41
Q 
A \_\_\_\_\_ system uses a thermal fluid in place of steam or water, to conduct heat from a central source to other vessels and heating coils in a plant. 
Select one:
a. Low temperature heating 
b. Condensing 
c. Closed 
d. Hot oil
A

d. Hot oil

42
Q 
In hot oil heaters, hot gases moving through the furnace transfer the heat to:
Select one:
a. The superheater
b. The economizer tubes
c. The tubes in the radiant section 
d. The tubes in the conduction section
A

c. The tubes in the radiant section

43
Q

On hot oil heaters, the low oil flow shutdown sensors (FISL) are always installed on the:
Select one:
a. Hot oil inlet line to the oil heater
b. Hot oil outlet line from the oil heater
c. Circulating pump suction line
d. Circulating pump discharge line

A

b. Hot oil outlet line from the oil heater

44
Q 
The inner walls and floor of a fired heater furnace are lined with: 
Select one:
a. Fiberglass insulation 
b. Asbestos blocks 
c. Ceramic tile 
d. Refractory
A

d. Refractory

45
Q

The high oil temperature shutdown device of an oil-fired heater senses the:
Select one:
a. Oil temperature at the furnace outlet
b. Combustion gases stack temperature
c. Ambient air temperature
d. Fuel gas temperature

A

a. Oil temperature at the furnace outlet

46
Q 
With regard to hot oil leaving the heater, the operating parameter of particular importance is the oil: 
Select one:
a. Pressure 
b. Velocity 
c. Temperature  
d. Viscosity
A

c. Temperature

47
Q

The predominant constituent of natural gas, which occupies up to 95% by volume, is:

Select one:

a. Propane
b. Methane
c. Ethane
d. Butane

A

b. Methane

48
Q

The purpose of “cooking” in a pulp mill is to:

Select one:

a. Soften the wood chips
b. Remove the lignin from the wood chips
c. Heat the wood chips
d. Remove the fiber from the wood chips

A

b. Remove the lignin from the wood chips

49
Q

The contaminants in natural gas may include:

Select one:

a. Hydrogen sulfide
b. Pentane
c. Methane
d. Oxygen

A

a. Hydrogen sulfide

50
Q

The purpose of stabilization in natural gas treatment plants is to:

Select one:

a. Stabilize the gas from the contactor
b. Flash off lighter gases at low pressure, from the liquid hydrocarbons
c. Prevent lighter hydrocarbons from separating from the heavier hydrocarbons
d. Flash off the gases at high pressure from the liquids

A

b. Flash off lighter gases at low pressure, from the liquid hydrocarbons

51
Q

Wood pulp production by chemical means requires the removal of the _____ in order to obtain the cellulose fiber.

Select one:

a. Lignin
b. Tannin
c. Cellulose
d. Sodium sulfite

A

a. Lignin

52
Q

Chemical pulping processes result in _____ of the raw forest material input.

Select one:

a. a 25% loss by weight
b. a 50% loss by weight
c. an insignificant loss
d. the most efficient use

A

b. a 50% loss by weight

53
Q

“Barking”, as it occurs in a pulp mill, means:

Select one:

a. To wash the incoming logs
b. To chip the logs
c. The removal of bark from the logs
d. Cutting the logs into short lengths

A

c. The removal of bark from the logs

54
Q

The raw material used in pulp and paper mills is:

Select one:

a. Steam
b. Chemicals
c. Bark
d. Wood

A

d. Wood

55
Q 
The automatic shutdown devices on a hot oil system are also called: 
Select one:
a. Interlocks  
b. ASDs 
c. Fail safes 
d. Lock-ups
A

a. Interlocks

56
Q 
Usually, \_\_\_\_\_\_\_\_ installed on a hot oil system.
Select one:
a. Four burners are
b. Three pumps are
c. Only one pump is
d. Two pumps are
A

d. Two pumps are

57
Q

The two main processes in SAGD plants are

Select one:

a. dewatering and silica removal
b. demulsification and dilution
c. flotation and softening
d. oil dewatering and water de-oiling

A

oil dewatering and water de-oiling

58
Q 
The \_\_\_\_\_ tubes of a fired hot oil heater have fins on their outer surfaces. 
Select one:
a. Extended type 
b. Fire 
c. Water
d. Radiant
A

a. Extended type

59
Q

Hydrogen sulfide and carbon dioxide are removed from natural gas:

Select one:

a. By superheating the gas
b. In the inlet separator
c. In the dehydrator
d. Using amine

A

d. Using amine

60
Q

The gas burners of a horizontal, rectangular, direct-fired oil heater are located:
Select one:
a. At the base of the furnace
b. At the top of the furnace
c. On the walls of the furnace
d. In a separate refractory-lined enclosure, at a safe distance from the oil-containing tubes.

A

a. At the base of the furnace

PENG 4th Class (8 decks)

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