Reactor internals for refining / petrochemical processing
Catalytic reforming, hydro desulphurization, ammonia conversion, NOx removal, styrene dehydrogenation, solvent recovery and isomerization are typical processes using wedge wire screens.
Basically two type of reactors can be considered:
Radial flow reactor
Center pipe and scallops
Center pipe/outer screen
The radial flow reactor can again be divided into 2 types:
- execution with center pipe and scallops
- execution with center pipe and outer screen
For both reactors the efficiency of the process depends on the screen internals. Trislot® wedge wire internals offer exceptional strength and resistance to collapse, breaking and buckling. The combination of high open area and non-clogging of the slots provides high volume flow and efficient media retention. Thanks to the vertical slots in the center pipe and the outer screen/scallops and the smooth surface, the catalyst beads can move up and down without being abraded or broken by the screens.
» Detailed description of the reactor internals
Down flow reactor
Down flow reactor
A down flow or up flow reactor uses flat screen to retain the treatment media or catalyst in its position and to foresee a collection place for the flow. Other internals used in this type of reactor are:
- inlet distributor
- scale trap baskets
- top bed filter
- catalyst support grids
- bottom baskets
The efficiency of the process depends on the screen internals. Trislot® wedge wire internals offer exceptional strength and resistance to collapse, breaking and buckling. The combination of high open area and non-clogging of the slots provides high volume flow and efficient media retention. Many different alloys are available, even for demanding applications.