John J Doyle Ltd was contracted by Arran Chemical Company to design a vent stack for a regenerative thermal oxidiser scrubber integration unit at 15m tall. Arran Chemical Company specialises in chemical manufacture of products for healthcare, fragrance, personal care, chemical and industrial applications.
A new licensed emission was required to be delivered via a new carbon steel stack at the site which must contain multiple connections for continuous and intermittent environmental monitoring equipment. These sample points must be at different orientations, sizes and elevations. The stack must withstand multiple VOCs (volatile organic compounds) including acetone, acetonitrile, cyclohexane, dichloromethane, ethanol, ethyl acetate, heptane and others.
The vent stack for the regenerative thermal oxidiser scrubber integration unit will operate at a flowrate of 1000-3000 m³/hr, depending on the required operation. The stack is fed from an upstream fan, with a discharge pressure of up to 10 mbarg. All noise limitations in the specification must be met.