Hydrogen systems
Which of the following reactions takes place during adsorption? A. Removal of carbon dioxide from hydrogen B. Removal of carbon monoxide from hydrogen C. Removal of nitrous oxide from hydrogen D. Removal of sulfur dioxide from nitrogen
A. Removal of carbon dioxide from hydrogen
Why do hydrogenation units require hydrogen? A. To saturate organic compounds B. To absorb hydrogen sulfide from feed C. To crack hydrocarbon molecules D. To denitrify a heavy hydrocarbon feed
A. To saturate organic compounds
Identify the purpose of using hydrogen in hydroprocessing units. A. Hydrogen is used to facilitate thermal cracking of hydrocarbons in presence of a catalyst. B. Hydrogen is used to facilitate chemical reactions of hydrocarbons in presence of a catalyst. C. Hydrogen is used to determine hydrocarbon feed. D. Hydrogen is used to distill a hydrocarbon feed in a distillation column.
B. Hydrogen is used to facilitate chemical reactions of hydrocarbons in presence of a catalyst.
Which if the following plans is developed to manage the hydrogen-producing units in the event of an interruption? A. Hydrogen operating B. Hydrogen priority plan C. Hydrogen production D. Hydrogen control
B. Hydrogen priority plan
What is hydrotreating? A. Hydrogen used to convert low-octane naphtha... B. Hydrogen used as a reactant to remove organic impurities in hydrocarbons C. Hydrogen reacts with other substance/reduce organic compounds D. Process combining complex organic molecules.
B. Hydrogen used as a reactant to remove organic impurities in hydrocarbons
Which of the following catalysts facilitates reforming in the steam reforming process? A. Copper B. Nickel Oxide C. Iron oxide D. Moly
B. Nickel Oxide
Identify the system that normally recovers hydrogen from the reactor effluent. A. Reflux system B. Recycle system C. Relief system D. Air system
B. Recycle system
Identify the process step in steam reforming in which the following reaction takes place: CO + H20 -->catalyst<-- C02 + H2 A. Methanation B. Shift reaction C. Adsorption D. Reforming
B. Shift reaction
Which if the following equipment is used to recover the heat that is consumed during the reforming process? A. Receiver B. Steam superheat coil C. Hot oil pump D. Cooling tower
B. Steam superheat coil
Identify the purpose of control valves in the hydrogen distribution network. A. To increase the flow and temp... B. To maintain the pressure and flow of hydrogen in the headers C. To increase the volume.... D. To maintain the purity....
B. To maintain the pressure and flow of hydrogen in the headers
What is the typical specification of inlet temperature in a low temperature shift reactor? A. 200-280 B. 500-670 C. 380-420 D. 320-400
C. 380-420
What is syngas? A. A mixture of hydrogen, sulfur and water B. A mixture of hydrogen and propane C. A mixture of hydrogen, carbon monoxide and carbon dioxide D. A mixture of carbon monoxide, carbon dioxide and sulfur
C. A mixture of hydrogen, carbon monoxide and carbon dioxide
Which of the following steam reforming processes can be a chemical or physical reaction? A. Shift ... B. Met... C. Adsorption D. Re...
C. Adsorption
Which of the following units produces hydrogen? A. Crude distillation B. Hydrotreating C. Steam reforming D. Vacuum distillation
C. Steam reforming
Identify the typical specification of inlet pressure in the steam reforming section. A. 230 psig B. 120 psig C. 620 psig D. 350 psig
D. 350 psig
Identify the steam-to-carbon ratio that needs to be maintained in the reforming process. A. B. C. D. 3:1
D. 3:1
Identify the method in which catalytic reforming units produce hydrogen. A. Catalytic reforming units produce hydrogen by reforming the molecules of steam and methane at hi temps. B. Catalytic reforming units produce hydrogen using natural gas and refinery fuel gas. C. Catalytic reforming units produce hydrogen as a byproduct during the fractional distillation process. D. Catalytic reforming units produce hydrogen as a byproduct while converting low-octane feed stocks into high-octane products.
D. Catalytic reforming units produce hydrogen as a byproduct while converting low-octane feed stocks into high-octane products.
Which if the following catalysts is used in the low temperature shift reactor? A. Iron B. Nickel C. Platinum D. Copper
D. Copper
Which if the following supplies hydrogen at different pressures to the process units? A. Blower B. Reactor C. Reformer D. Header
D. Header
Identify the correct sequence of steps in the steam reforming process? A. B. C. D. Reforming, S, A, M
D. Reforming, S, A, M