In 2016, TANN Corporation designed and installed an RTO that utilizes a concentrator system for a customer in the automotive manufacturing industry. This system allows a process with a high exhaust volume to utilize a smaller RTO than normal while still remaining EPA compliant. The concentrator system will save 12,000,000 BTUs/hr and 450 kw vs a conventional RTO, which results in $650,000/yr in savings. The concentrator system forces solvent laden air (SLA) to be pushed through the rotary wheels, where VOCs are adsorbed onto the zeolite structure and clean air passes through to the stack. The zeolite wheel is continuously regenerated by passing a hot (desorption) air stream through a separate segment of the wheel, which feeds the RTO.
Concentrator Design Specifications:
- Paint Booth Application
- 180,000 SCFM Process Stream
- 95% Relative Humidity
- 97% Removal Efficiency
- 15:1 Turndown
- Solvent Load 50lbs/hr to 100lbs/hr
- Concentrator Wheels
- Two Wheel Design
- Zeolite Adsorbent
- Turnkey Installation
RTO Design Specifications:
- 15,000 SCFM RTO
- 98% Destruction Efficiency
- 15% LEL Capability
- Turnkey Installation
Utilizing a concentrator requires specific process related conditions but can be an ideal solution for many customers. The process should have a low solvent concentration as well as low particulate levels. Before the concentrator wheel(s) there will usually be a filter house, and the frequency of replacing the filters corresponds directly with the amount of particulate. Customers will benefit the most from a concentrator system when their process has a high volume with a low VOC concentration.
