New Heating Systems for Repurposed Flotation Dryers
Cire Technologies, Inc. has extensive experience modifying and repurposing existing equipment. We recently designed, fabricated and installed new heating systems for four repurposed Worldwide flotation dryer zones for a Connecticut film converting company. The four zones were used to create two lines of forty-foot drying for aqueous coatings.
The system included four burner boxes with Maxon Ovenpak, natural gas burners. Temperature control for each zone is independent.
Because of limited space, eight airfoil supply air fans were used: one feeding the top nozzles and one feeding the bottom nozzles of each zone. The fans for each zone are controlled by variable speed drives to provide flexibility to the dryers’ operation.
Since the dryer boxes’ upper halves retract up to eighteen inches, the design enables the top supply fan and recirculating ductwork to retract with the upper half of the existing dryer zones.
Ductwork and the burner box were fabricated with stainless steel interior skins, protected by up to four inches of insulation and a 20-gage aluminized exterior skin.
The project also included two exhaust fans and the associated ductwork to deliver the exhaust from each line to atmosphere.
Complete gas trains and controls, utilizing Honeywell flame safeguard and gas train components, were incorporated with the burner box skids to simplify the installation. Cire Technologies, Inc. also included Allen Bradley I/O modules for each zone to communicate with the line web coating and handling equipment, provided by others. This enabled the dryers to be integrated with the line control system and HMI.
The entire project from design to completed installation and commissioning was completed on time and on budget.
For more information on how Cire Technologies, Inc. can work with you to update or repurpose existing equipment, please click the Quick Connect or Request Info buttons found on this page.
Replacement Heat Exchanger Pass for Recuperative Thermal Oxidizer
Cire Technologies is pleased to announce the completion the replacement of a recuperative thermal oxidizer heat exchanger pass.
This replacement heat exchanger was the third (hot side) pass of a 12,000 scfm recuperative unit in Massachusetts. The heat exchanger is a stainless steel tube design that included provision for the high temperature thermal expansion of the tubes and head plate seals to prevent cross contamination of the air streams.
Cire Technologies was responsible for the complete turnkey project including design, fabrication and installation of the tube and shell heat exchanger. In addition Cire Technologies supplied and installed replacement insulation between this heat exchanger pass and the oxidizer burner. The project was delivered on time and on budget.