Cycle-Therm, believing that gravity works, designs a vertical flow RTO, where the combustion chamber is placed over the recovery media and process gases flow moves vertically. The heat recovery media sits on a secure, well supported, porous stainless steel support mechanism. The media is held in place by gravity. Since this support mechanism, also known as the cold face, will, from time to time, see extremely high temperatures under upset conditions, it is mandatory that it is constructed in such a way to keep from sagging under the weight of the heat recovery media at these extreme conditions. These upset conditions, will include power failures and low flash point solvents (to name two) igniting at the base of the heat recovery bed. These upset conditions are a rule and not an exception. For this reason Cycle-Therm supplies a stainless steel, truss supported cold face capable of withstanding 1,400 F° for ½ hour.

To keep the 1,500 F° combustion temperature within the confines of the oxidizer, protecting personal and the ¼ inch steel RTO housing, a 2,300 F° service, soft refractory lining is applied to all internal walls. This assures that a safe 140 F° OSHA surface temperature is maintained.

The blanket insulation lining is fan folded to form modules, which are pre-designed to be individually attached to pre-measured and spot welded stainless steel anchors. This assures a uniform airtight fit between modules and the exterior shell. The blanket is fan folded with its folded edges outward into the air stream instead of flat layered. This proven fan fold configuration protects the insulation fiber against compression and wear abrasion. All Cycle-Therm units are insulated by a professional refractory subcontractor.