Air pollution control system

The Cleanswitch modular oxidiser is a regenerative thermal oxidiser (RTO) that is claimed to remove 99-plus per cent of volatile organic compounds (VOCs) without using a VOC entrapment system.

With a thermal efficiency rating of up to 97%, Cleanswitch provides operating economy. Under normal conditions, it will run in a self-sustaining mode that does not require any additional fuel to destroy VOCs and achieve clean air compliance.

The Cleanswitch takes its name from Megtec's valve that keeps cleaned air totally separate from dirty process exhaust. The valve uses a double-air seal, which ensures the integrity of the valve is maintained for the life of the equipment. This valve design virtually eliminates pressure spikes typical of poppet valve systems. In addition, smooth flow transition between heat recovery chambers eliminates process upsets that result from pressure changes during a valve switch. This makes the unit applicable for pressure-sensitive processes.

The oxidisers feature a modular construction. Control housings are skid mounted to simplify and speed installation, which also improves access. Units are pre-wired and prepiped at the factory for improved quality control and trouble-free start-up.

Other features include: up to 20% lower electrical costs claimed; sizes up to 90,000 scfm, 142,000 Nm3/h; 1-3 day installation time; trouble-free operation for low maintenance costs; and a state-of-the-art control system.