11-12

Question 1

This type of fire heaters outside the structure is shaped like a cylinder in these heaters the tubes are mounted vertically.

Answer 1

vertical (cylindrical heater)

Question 2

This type of heater is a firebrick and/or fiberboard insulated flat sided structure that is typically designed for a small to medium range of input heat. May or may not have a convection section below the stack to make them more efficient.

Answer 2

Box

Question 3

This type of fired heater may have a bridge wall in the firebox which allows them to input the highest amount of heat in the radiant section of the firebox. Can also accommodate large process flows, and are typically equipped with large convection sections making them very efficient.

Answer 3

Cabin

Question 4

Which types of heaters have self draining (typically) tubes that are mounted horizontally and parallel on the walls and ceiling. Usually common used process that contain liquids or slurries & easier to clean than vertical.

Answer 4

Cabin & Box

Question 5

a device in the fired heater that positions a flame in the desired location.

Answer 5

burner

Question 6

Name the 3 types of burners

Answer 6

premix, diffusion, combination

Question 7

when the fuel gas pressure to the burner is too low to sustain combustion, which causes dangerous amounts of combustible gases to build up in the heater that could lead to an explosion

Answer 7

flameouts

Question 8

a small burner located close to a main burner which is used to ignite the main burner. They must be lit at all times

Answer 8

pilot

Question 9

the portion of a burner which controls the flow of combustion air to the combustion zone and determines characteristics of that flow

Answer 9

air register

Question 10

adjustment of the _____ is very important to proper flame and flue gas precent oxygen control also known as ________.

Answer 10

air register , excess air

Question 11

upstream of fired heater, process fluids are divided into separate inlet pipes called _____

Answer 11

passes

Question 12

the ______ protects the tubes in the convection section from radiant heat

Answer 12

shield section

Question 13

controls the flow of flue gas as it exits the fired heater

Answer 13

damper

Question 14

is used to clear the firebox or any residual fuel gas before lighting off a fired heater during the startup procedure

Answer 14

snuffing steam

Question 15

safety shutoff valves (ESD’s) are located on the _________line _______ of the fired heater fuel gas header.

Answer 15

main fuel, upstream

Question 16

draft can be created in what 4 ways

Answer 16

natural, induced, forced, balanced

Question 17

_______systems have a fan that forces air in the firebox, and a fan that pulls the flue gases out of the firebox

Answer 17

balance draft

Question 18

a method of removing combustibles from a firebox in preparation for lighting burners before startup

Answer 18

purge

Question 19

a situation or condition where the flame from a burner makes contact with the tubes, a very dangerous situation which can lead to tube failure

Answer 19

impingement

Question 20

the exact amount of air that is required to completely convert Fuels to CO2 and H2O

Answer 20

Stoichiometric

Question 21

the temperature at which mixtures of fuel and air will ignite without a flame or spark

Answer 21

auto-ignition

Question 22

protective instrument control systems (sensors and logic control systems) which are almost always provided in process heaters and boilers to avoid dangerous conditions.

Answer 22

interlocks

Question 23

a lining specifically designed to line the walls, floor, and ceiling of a firebox to reduce the heat losses externally and reflect the heat back to the tubes. Chalk like brick, stainless steel rods, & gunite

Answer 23

refractory

Question 24

the hottest section of a fired heater, located at the bottom, process fluids flow down from the convection to the _______ section while hot gases flow up from the _______ to convection section

Answer 24

radiant section

Question 25

A plants steam system has ____ basic sections with _____ separate, but related functions

Answer 25

four, four

Question 26

Name the 4 basic sections of a pants steam system

Answer 26

Generation, Distribution, End Use, Recovery

Question 27

occurs in a fuel fired boiler or a specially designed waste heat recovery device that applies heat energy to water in order to create steam

Answer 27

generation

Question 28

occurs after steam leaves the steam generator and is released into a steam header, pressure reducing station, or piping to be transmitted to the intended piece of equipment or process

Answer 28

distribution

Question 29

used as a mechanical energy to operate drivers for equipment like pumps, to provide heat for refining processes, as a stripping agent in a specific process, to purge and clean vessels, and for heat tracing vulnerable equipment

Answer 29

end use

Question 30

when as much heat energy is removed from the steam, it changes into a water or water vapor mix that is recovered, de-aerated, chemically treated, and used again; depends on the efficiency of each plant's steam system, but there are many reliability and economic advantages to reusing the water as many times as possible

Answer 30

recovery

Question 31

directs water impurities into the drum below the firebox

Answer 31

downcomers

Question 32

located at the bottom of the boiler where impurities can settle out of boiler feed water to help minimize scale

Answer 32

mud drum

Question 33

dissolved minerals from hard water that precipitate out of boiler feed water, either in heater tubes or in the steam space around a water and steam interface level

Answer 33

scaling

Question 34

is used to provide a water sources for boiler and steam generators. Water is high quality & usually has been treated and filtered

Answer 34

boiler feed water

Question 35

4 factors that impact boiler operations include

Answer 35

temperature pressure water level water quality

Question 36

______ happens after steam leaves the steam generator and is released into a steam header, pressure reducing station, or piping to be transmitted to the intended piece of equipment or process.

Answer 36

distribution

Question 37

4 Major components of a steam distribution system

Answer 37

steam header pressure reducing station de-superheater steam traps

Question 38

is usually a pipe that carries steam to service a number of other devices, such as steam tracers, pumps, reboilers, or stripping steam to towers

Answer 38

steam header

Question 39

is used to return recovered condensate to the steam generation section of a steam system

Answer 39

condensate return piping

Question 40

equipment used for steam generation which are generally small and/or portable fired heaters, not a common design

Answer 40

fire-tube boilers

Question 41

equipment used for steam generation which are generally medium or large fired heaters, consist of a firebox surrounded by tubes filled with condensate and steam, sometimes referred to as direct fired, most common design

Answer 41

water-tube boilers

Question 42

equipment used for steam generation where heat energy from flue gases off a process fired heater generate steam

Answer 42

waste heat recovered boiler

Question 43

5 main components that make up a boiler

Answer 43

economizer steam drum mud drum firebox superheater

Question 44

_______ is the section of a boiler where the burners are located and the ______ heat transfer occurs

Answer 44

firebox