Catalytic Cracking
In the catalytic cracking process, erosive catalysts can wreak havoc on valves. High-performance ball valves can handle the powdery, ultra-high temperature catalysts used during the removal process from the regenerator.
Operating Conditions
Stage separator isolation
Spent catalyst storage hopper isolation
Feed drum emergency block
Throttling spent catalyst withdrawal
Spent catalyst withdrawal emergency block
Spent catalyst withdrawal root isolation
Slurry feed isolation
Frac tower bottoms filter isolation
Hydrocracking
When processing residual heavy oils, mechanical equipment is punished by high pressure, high temperatures and corrosive and erosive media, such as salt, particulates, metals, sulfur and naphthenic acids.
Operating Conditions
Reactor catalyst addition
Reactor catalyst withdrawal
Unit depressurization
Feed pump drain
Feed pump suction isolation
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.
Operating Conditions
Guard reactor isolation — Catalyst addition
Guard reactor isolation — Catalyst withdrawal
Recycle gas compressor surge
Stripper bottoms pump isolation
Unit depressurization
Reforming
It is not surprising that the evolution of the reforming process, from semi-regenerative to continuous, has placed increased performance demand on catalyst movement valves.
Operating Conditions
Automated reactor bottoms
Manual catalyst to lift engager
Automated catalyst to lift engager
Automated fresh catalyst addition
Catalyst unloading from surge hopper
Regen catalyst unloading from surge hopper
