Compressors and Blowers Test Questions with All Correct Answers
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Module
Compressors and Blowers
Institution
Compressors And Blowers
Compressors and Blowers Test Questions with All Correct Answers
types of reciprocating compressors - Answer-single-stage- uses a single cylinder and compresses once
mult-istage - compresses more than once depending on the number of cylinders
Filters - Answer-placed before the inlet pipe to ...
Compressors and Blowers Test
Questions with All Correct
Answers
types of reciprocating compressors - Answer-single-stage- uses a single cylinder and
compresses once
mult-istage - compresses more than once depending on the number of cylinders
Filters - Answer-placed before the inlet pipe to trap dust and other foreign materials
from entering compressor, use cloth or metal material
forced-feed lubricators - high pressure, oils the piston & rod packer
force feed lubricator - Answer-used on reciprocating compressors
Jacket water system (reciprocating) - Answer-controls the cylinder temperature,
circulates water through the cylinder jacket, reservoir, pump, exchanger, control valve
Relief valves - Answer-relieves pressure and may be present on the compressor
discharge line or on the auxiliary equipment such as KNOCK OUT pot.
inter-stage coolers (reciprocating) - Answer-heat exchangers placed between stages of
a multistage compressor, some of which are fin fans
Spill-back loop (reciprocating) - Answer-used for flow adjusting flows, discharge to
suction source
Knockout pot - Answer-removes the liquid from the gas
Dry gas seal - Answer-consists of a stationary ring and an inner rotating ring
seal oil systems Alarms (centrifugal) - Answer-low seal oil tank level - overhead tank
low seal oil pressure
Snubberator or suction bottle - Answer-to minimize the pulsation in gas flow in the
suction line
, Blowers - Answer-concetrate the flow of air to a particular portion of an equipment, used
in FCC for regenerator
Dampener - Answer-placed on the discharge pipe line minimizes the fluctuations in gas
flow
Components of Blowers - Answer-driver
blower wheel
shaft or belt
housing
outlet
housing - Answer-channels the air
Unloaders - Answer-preventing a reciprocating compressor from compressing a gas by
mechanically holding the suction valave open
blower wheel - Answer-contains the rotating blades
alarms emergency shut down - Answer-low lube oil
high motor winding temperature
high vibration
high knock out pot level
dampers - Answer-used on the downstream or discharge side
start up procedures of positive displacement compressors - Answer-pre-checks
inlet/outlet valves open,njacket water, oil levels, knock out level,force feed lubricator,
instruments
1. Inform Console
2. start lube oil
3. compressor in unloaded condition
4. start driver
5. warm up
6. check abnormal sounds, pressure, temperature
7. start loading the compressor
parallel-blade dampers - Answer-partially closed restricts the flow of air
shutdown procedure of reciprocating compressor - Answer-pre-checks
1. start the stanby compressor
2.unload the compressor
3. stop the compressor motor
4. ensure forcefeed lubricator is running until stop of compressor
5. remove moisture in the inter-stage coolers
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