Chapter 13 Flashcards
In a vertical heater the burners are located where?
A) Outside of the furnace
B) Sides of the furnace
C) Top and sides of the furnace
D) Floor of the furnace
E) Top of the furnace
D
Fired Heaters run best with excess air rate of:
A) 10 to 30%
B) 5 to 10%
C) 15 to 20%
D) 2 to 5%
E) 10 to 20%
A
What is one of the uses of a direct-fired heater?
A) Dearator
B) Fractionator reboiler
C) Boiler feedwater preheater
D) Economizer
E) Boiler combustion air preheater
B
For indirect fired heaters it is very important that before introducing heat into the heater the:
A) Combustion air is set correctly
B) The heat transfer fluid is above the process heating coil
C) Check to ambient air temperature
D) Heater temperature is minimum
E) The flame is light blue with yellow tips
B
Most indirect fired heaters have ____________ firing systems.
A) Very expansive
B) Complicated
C) Manual
D) Simple
E) Elaborate
D
The pilot used for most of the indirect fired heaters are the ____________ type.
A) Continuous
B) Ignition
C) On-demand
D) Interrupted
E) Intermittent
A
Most Vertical fired are equipped with:
A) Forced draft burners
B) Natural draft burners
C) Wind Burners
D) Balanced draft burners
E) Induced draft burners
B
To prevent overheating of the exterior of the fired heater below the floor mounted burners:
A) Water cooling tubes are installed in the floor
B) The burners are raised above the floor
C) The burner temperature is kept low
D) Combustion air is used to cool the floor
E) Refractory lining is used
E
The 3 main components of an indirect fired heater include:
A) Combustion gas tubes, shell, process coil
B) Convection tubes, radiant tubes, refractory walls
C) Forced draft fan, boile tubes, condenser
D) Feed pump, heater, fractionator
E) Burner, firetubes, stack
A
This type of fired heater has a row of radiant tubes that divides the furnace vertically:
A) Central tube wall
B) Helical coil
C) Cylindrical
D) Cabin
E) Horizontal
A
