Hydrotreating

Hydrotreating, the most widely used process to remove sulfur and nitrogen from refinery streams, often requires that a guard-reactor system be put in place to prevent poisoning the hydrotreating catalyst. In turn, the collection of heavy metals on the catalyst can frequently cause the guard reactor to be offline for maintenance.

Now, licensors are developing new methods for loading guard reactors with fresh catalyst without requiring a unit to be offline. And MOGAS is there to make sure these innovations are equipped with the highest-quality catalyst withdraw and addition valves.

Operating Conditions:

High Temperatures: 300 – 1000° F
High Pressure: 1000 – 3500 psi
High Pressure, High Temperature Hydrogen
High Pressure, High Temperature Catalyst Handling
Coking Service

Asphaltene Formation
Viscous Sludge
Ammonium Bisulfide Corrosion
Hydrogen Sulfide Corrosion
Polythionic Acid Corrosion

Residual Hydrotreating Process Flow Diagram

Chopper
Guard Reactor Isolation / Catalyst Addition
Guard Reactor Isolation / Catalyst Withdrawal
Recycle Gas Compressor Surge
Rich Amine Isolation
Sour Water Isolation
Cold High Pressure Separator Automated LCV Isolation
Cold High Pressure Separator Manual LCV Isolation
Hot High Pressure Separator Automated LCV Isolation
Hot High Pressure Separator Manual LCV Isolation
Stripper Bottoms Emergency Block
Stripper Bottoms Pump Isolation
Unit Depressurization