Hot Air Hopper Dryer
VOC Removal Perfected
Removing volatiles to non-detectable levels can be difficult and costly. The Bepex Purge Vessel’s proprietary design provides superior material flow and a low-cost option to bring volatile content down from 1-2 percent to low PPM levels.
Superior VOC Removal
The Bepex Purge Vessel provides near-complete removal of volatile organic compounds (VOCs) from bulk solids.
Low Cost Operation
The Purge Vessel requires less inert gas, resulting in more efficient VOC treatment and lower costs.
Superior Residence Time Control
Bepex’s proprietary design delivers strict residence time control and near true plug flow operation.
Residence Time Control
Bepex’s proprietary mechanical discharge promotes near absolute plug flow for high control over residence time. Set residence time from hours to days.
Low Operating Costs
The Bepex Purge Vessel requires a smaller counter flow of purge gas compared to other designs, minimizing operating costs.
Designed for Efficient VOC Removal
The Purge Vessel is designed for efficient, continuous, steady drying and VOC removal – especially for particles that may have cohesive properties. Our design eliminates bin or hopper inserts, which can result in interrupted flows. Better gas distribution in the hopper also prevents material channeling or agglomeration.
How does it work?
The Purge Vessel is a long residence time hopper dryer typically incorporated into processes requiring near-complete removal of volatile organic compounds from bulk solids
Removing VOCs to non-detectable levels can be difficult and costly. VOCs are often hazardous or reactive and need to be removed in a contained inert gas environment. Inert gas is expensive and minimizing the volume of gas required for VOC removal is critical to controlling process costs.
The Bepex Purge Vessel provides a low-cost option to bring VOC content down from 1-2 percent to low PPM levels by providing a small counter current flow of purge gas.
Solids enter through a port at the top of the hopper and fall onto the bed of solids. The bed of solids slowly settles down the length of the vessel. A heated, inert gas flows through counter current to the bed. Once particles have made it to the bottom of the vessel, a slow-moving sweep arm pulls them into the discharge where they exit the machine.
The proprietary mechanical discharge design provides near complete plug flow operation, strict residence time control, and ensures true first-in-first-out material flow.
Bepex works with PLA producers to extend the uses for PLA polymers through post-processing thermal treatment. Bepex equipment crystallizes PLA pellets, making them easier to process, stronger, and less transparent. That makes PLA usable in more products, expanding markets for this sustainable solution.Learn More