Unit12 Typical Industrial Plant Configuration Flashcards
Natural gas - Absorption process removes the hydrogen sulfide(H2S) and carbon dioxide(acid gases) are absorbed by
- Caustic soda
- Soda ash
- Monoethanolamine (MEA)
- Ammonia
- Monoethanolamine(MEA)
Dehydration process in the Natural gas plant removes
- Water
- Oxygen
- Carbon dioxide
- impurities
- Water
Absorption: _____ removal is most often used when Co2 concentration are high ______
- Sulfure, 50%
- Cryogenic, 50%
- Ammonia, 60%
- Water, 60%
- Cryogenic, 50%
Claus process can recover _____% of the _____ in the feed bases.
2H2S + SO2 -> 3S + 2H2O
- 95-97% , Sulfur
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
c. Temperature
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%
d. 75 to 85%
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. Lignin
\_\_\_\_\_ 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. Dikes
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. Oil temperature at the furnace outlet
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. Interlocks
Heavy oil recovered using SAGD or CSS is properly referred to as
Select one:
a. crude
b. bitumen
c. bottoms
d. tar
b. bitumen
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
d. Newsprint
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. Activate the emergency shutdown.
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
b. The surge tank
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
d. Remove hydrogen sulfide and carbon dioxide from the gas
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
d. Two pumps are
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. At the base of the furnace
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
c. The oil temperature is above a specified range, for an extended period of time
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
c. A tube failure
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
b. Conventional, single stage centrifugal pump
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
b. a 50% loss by weight
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
b. Suction
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. 300°C
The hydrocarbons in natural gas may include:
Select one:
a. Carbon dioxide
b. Ethane
c. Nitrogen
d. Hydrogen sulfide
b. Ethane
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%
c. 40 to 50%
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
c. in the flue gas flow, downstream of the furnace
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
b. Remove the lignin from the wood chips
The contaminants in natural gas may include:
Select one:
a. Hydrogen sulfide
b. Pentane
c. Methane
d. Oxygen
a. Hydrogen sulfide
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. Manually
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
d. Hot oil
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
d. Using amine
To transport bitumen through a pipeline, it must be diluted with
Select one:
a. diluent
b. produced water
c. water
d. varsol
a. diluent
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
d. Outlet line from the heater
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
d. Below the expansion tank
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
b. Liquids from the gas
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. Remove water from the main gas stream
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. Extended type
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
c. High and low fuel gas pressure cut-offs
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. Maximum temperature of the oil that can be pumped
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
c. The tubes in the radiant section
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
b. Flash off lighter gases at low pressure, from the liquid hydrocarbons
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. overburden removal (OR) and cyclic steam stimulation (CSS)
c. mining and steam assisted cyclic stimulation (SACS)
d. mining and steam assisted gravity drainage (SAGD)
a. steam assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS)
The two main processes in SAGD plants are
Select one:
a. dewatering and silica removal
b. oil dewatering and water de-oiling
c. flotation and softening
d. demulsification and dilution
b. oil dewatering and water de-oiling
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
b. Feedstock
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
b. Hot oil outlet line from the oil heater
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
d. White liquor
The predominant constituent of natural gas, which occupies up to 95% by volume, is:
Select one:
a. Propane
b. Methane
c. Ethane
d. Butane
b. Methane
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
d. Refractory
“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
c. The removal of bark from the logs
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
d. Sulfite
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
d. Digester
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
d. 200°C
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
d. Chemical
The raw material used in pulp and paper mills is:
Select one:
a. Steam
b. Chemicals
c. Bark
d. Wood
d. Wood
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
b. Sulfate and sulfite
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
b. Cooking
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
b. Hot oil outlet line from the oil heater
