The Whole Class 1
This is one "swell" way to make money with a hydroprocessing unit
What is volume swell
This cracking unit is superior to a FCC unit because products don't require additional treating
What is a hydrocracker
True/False: It is acceptable to bypass a safety system in a running hydroprocessing unit
False
Older mesh screen should always be replaced with this upgrade
What is v-wire screen or Johnson Screen
Sulfidation gets worse as temperature and this variable increases
What is H2S partial pressure
Door _________ and boat ________ describe the best use of this type of valve
What is door stops and boat anchors
This is one of the most effective actions to stop a temperature excursion
What is sagging reactor pressure by reducing makeup H2 - or -
What is quenching - or -
What is opening the feed/effluent bypass valve
No flow = _____________ for a high-pressure reactor feed furnace
No firing
This is the most important factor in reactor internals for proper operation of a reactor
What is levelness of the liquid distribution tray
This is the name of salt formed from the reaction of H2S and NH3 in the reactor effluent
What is ammonium bisulfide
This unwanted reaction can increase when H2 partial pressure is reduced
What is coking
Above this temperature, thermal cracking is likely to occur in most hydroprocessing units
What is 850F
This type of compressor has the highest risk of causing an injury or fatality in H2 service
What is a reciprocating compressor
This is the maximum recommended temperature for any reactor
What is 825F
This metal can be damaged by high levels of chlorides in the presence of water above 150F
What is stainless steel
This term is used to describe the initial necessary flow rate when putting feed into a reactor
What is gusto!
This variable should be between 0.5 and 1.0 per foot of catalyst to promote good distribution
What is pressure drop
This variable can be changed to improve oil/water separation in a cold separator
What is temperature - or -
What is residence time
This is the desired pressure drop for a catalyst bed
What is 0.5 to 1.0 psi/foot
This is the temperature that all metal must be above prior to fully pressuring up the reactor and other equipment
What is minimum pressurization temperature (MPT)
This reaction is likely occuring when product sulfur rises with increasing reactor temperature
What is mercaptan recombination
This kinetic term explains the difference in temperature response for hydrocracking and hydrotreating
What is activation energy
This number is the maximum radial temperature spread considered "good" for reactors
What is 10 degrees F
This is the amount of tolerance required for a reactor tray levelness (+/-)
What is 1/4"
This is the maximum amount of chlorides allowed in water used to clean or hydrotest equipment
What is 50 ppm