Q & A > Question Details
Why we need to purge the PDI across each bed in DHT reactor with recycle gas?
18/01/2017 A: Eric Vetters, ProCorr Consulting Services, ewvetters@yahoo.com
If reactor effluent is allowed into the PDI, it becomes a cold spot in the system, and diesel can condense and build up a liquid level in one or both legs leading to the instrument. The presence of liquid in the instrument tubing would lead to a bad pressure differential reading, which would prevent proper monitoring of pressure drop across the reactor beds.