Case Studies

On June 24, 2010, NESTEC received a call that an active vertical-flow RTO had gone offline, which meant the customer process was also forced offline. NESTEC quickly determined that the oxidizer had failed due to a prolonged period of overheating, resulting in structural damage to the heat-recovery media support system, central chamber shell, and refractory…

International Paper issued NESTEC a purchase order on February 1, 2010, to rebuild its VF RTO. Mechanical designs were completed onsite within the week and quickly approved. (A purge duct and damper were designed into the system to comply with NFPA safety requirements.)

At this existing wood pelletizing plant, organic emissions needed to be conveyed to two multi-chamber RCOs. Specifications included replacement of five process exhaust fans, as well as the supply of a complete exhaust duct system.

The new equipment NESTEC designed and installed for this pharmaceutical plant replaced another manufacturer’s existing catalytic oxidizer/scrubber, which was not performing adequately. In engineering the new solution, NESTEC combined two air pollution control technologies to reduce emissions most efficiently.

Over a decade ago, Georgia Biomass located in Waycross, GA (now owned and operated by Enviva), one of the largest wood pellet producers in North America, faced an Environmental Protection Agency (EPA) fine due to a Title V permit violation related to air emissions. To address this critical issue, Georgia Biomass turned to NESTEC, an…

In 2015, NESTEC received an invitation to bid on two 15,000 scfm municipal waste water / sludge treatment facility thermal oxidizers to handle organic emissions from two existing Hankin ES multi-hearth furnaces. The 30+-year-old, 8 hearth furnaces were to be modified to convert the top two hearth stages of each from their original evaporation and…

Nestec, Inc. provided two 46,000 SCFM Regenerative Thermal Oxidizer 
(RTO) systems to a potato processing facility in Idaho. The RTO’s were designed to control emissions from the potato frying portion of processing to meet local 
air regulations.