Safety risks related to potentially dangerous exothermic reactions
The BORSIG Carbon Retrofit Unit mainly consists of the membrane unit, a vacuum pump and an optional blower installed upstream from the existing active carbon unit.
A substantial mass flow of hydrocarbons bypasses the adsorber vessels and directly enters the existing absorption system (scrubber). The vapour stream from the scrubber is fed to the membrane unit where it is separated into two streams. The stream passing through the membrane material is highly enriched with hydrocarbons and directly returned to the scrubber. The light hydrocarbon stream, rejected by the membrane, enters the existing adsorber vessels.
Considerable reduction of hydrocarbon mass flow to the carbon bed adsorbers
Increased adsorption performance and process debottlenecking
Increased safety of the carbon VRU due to reduction of exothermic reactions in the carbon beds
Substantially increased capacity of the retrofitted system
Increased efficiency and lower emission level
Pre-assembled, skid-mounted design
Reduced specific power consumption
Easy and cost effective integration with only minor modifications of existing active-carbon unit