Zusammenfassung der Ressource
Frage 1
Frage
A Eutectic salt solution used as a heat transfer medium in an indirect heater is a mixture of:
Antworten
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Sodium nitrate and magnesium nitrate
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Calcium nitrate and magnesium nitrate
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Sodium nitrate and calcium nitrate
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Sodium nitrite and potassium nitrate
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Calcium nitrate and potassium nitrate
Frage 2
Frage
The burner of an indirect heater will burn at ______ rate until the desired heat transfer fluid temperature is reached
Frage 3
Frage
Before starting an indirect fired heater, ensure the proper operating level of heat transfer fluid has been established in the heater shell. The level is always:
Antworten
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Above the process heating coil
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Just below the process heating coil
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Between the fire and process tube
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At the mid point of the heater
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Above the expansion tank
Frage 4
Frage
In an indirect fired heater the fluid flowing in the process tubes is heated by the:
Antworten
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Intermediate fluid that is heated by the fire tube
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Fire tube immersed in the furnace
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Air that is heated by the fire tube
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Flue gases leaving the furnace
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Steam in the steam dome
Frage 5
Frage
When a direct-fired heater is used to vapourize the process fluid drawn off the bottom of a fractionation tower, it is called:
Antworten
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Heating
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Reboiling
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Reacting
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Storage
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Cracking
Frage 6
Frage
In a Horizontal Rectangular Direct Fired Heater, the _______ is /are mounted on the floor of the furnace and extend along a center line from the front to the back of the furnace.
Antworten
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Breeching
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Convection tubes
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Radiant tubes
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Fire box
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Burners
Frage 7
Frage
The ______ and the ______ assembly are mounted above the convection section of vertical fired heaters.
Antworten
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Economizer, damper
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Economizer, air heater
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Stack, damper
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Reheater, reboiler
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Air heater, stack
Frage 8
Frage
Vertical cylindrical heaters are bottom fired, with a _______ radiant section and a convection section that is _______
Antworten
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Vertical, horizontal
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Cylindrical, rectangular
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Circular, below the radiant section
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Longitudinal, circumferential
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Rectangular, cylindrical
Frage 9
Frage
Most vertical fired heaters have _______ draft
Antworten
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Natural
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Mechanical
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Forced
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Balanced
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Induced
Frage 10
Frage
The most commonly used heaters, because of there efficiency, particularly in the larger sizes, are the ______ heaters