Rotating concentrators are used in Volatile Organic Compounds (VOCs) treatment processes when the VOCs concentration is under 1 g/Nm3 VOC. The accumulated VOCs are released to a small hot air stream and can be treated in a smaller post-combustion system.
Both operations are carried out continuously using a single drum rotating at low speed with its 2 sections working simultaneously. After treatment, the air may be discharged into the atmosphere as it is pure enough or treated through a regenerative thermal oxidizer without request of additional fuel gas.
Fives designs and manufactures concentrator systems adapted to any customer needs - absorption is ensured by zeolites, while the parts of the rotating drum may be made in one or more different materials. ITAS roto concentrators include engineering studies and system design, site assistance and supervision, on-line remote assistance, revamping and training.
Their technology ensures the fuel consumption is optimized as the energy contained in the solvents is used to operate the plant. Further, at low pollutant concentration (>2 g/Nm3) the oxidizer activates the auto-thermal mode.
Typical applications are refineries and petrochemical industries
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