The best answer to Tower fouling
Operation run length and throughput of refinery units can be badly affected by the salt build up in their fractionators.
When ammonium salts sublimate from the gas phase to the solid phase, they can precipitate on the tower trays. The first consequence is that oil and gas flows are restricted and delta pressure increases as observable phenomena. Under these conditions, the throughput reduction can cause an unscheduled shutdown and maintenance. All these consequences inevitably affect the profitability of the unit. A refinery in Japan was experiencing chronic delta pressure build-up in their FCC main fractionators. Delta Pressure was almost reaching the defined licensor upper limit, which resulted in a significant throughput reduction. Download our case study (CS143) and learn how to resolve salt fouling without an unscheduled shutdown or additional flow reduction.