Hot Bottom Features

A safety cage surrounds the blower, blower motor, drive belt, and stack. This protects personnel from heated and moving parts.

Industrial duty panel with with NEMA 4 rating. Standard safety disconnect, red flashing warning beacon, all controls and indicators for operation, manual reset button, digital temperature controllers monitor fluid and heat exchanger. Optional features may include-- digital read out and controls for over-spray foam control, other NEMA ratings, remote panels, PLC automation.

(recommended option on 200/300 units, standard on 600 and above) Installed in the steam line to control the volume of steam entering the steam chamber. This controls the heat input, the boiling, and the rate of evaporation within the unit. A strainer and steam trap on the condensate return line are provided. It can also be connected to the foam sensor to control foaming.

The entire unit, both interior and exterior, including all wetted internal parts are constructed of polished stainless steel. Standard construction for all units -- 10 gauge (.140”) walls, 3/8” plate floor, grade 316L stainless steel - offers excellent resistance to a wide range of corrosives and atmospheric exposures, high temperature strength. All sides are insulated with 2” fiberglass, 800°F rated. Alloy recommendation does not express or imply any warranties offered against material corrosion.

• AL-6XN - 6% molybdenum super austenitic alloy for better chloride resistance without the expense of high nickel alloys. • High nickel alloys - such as B-2, C-22, G-30, 20Cb-3 for a wide range of specific corrosive applications. • Hastelloy C-276 - one of the more universally corrosion resistant alloys with excellent high chloride resistance and high temperature properties.

With exhaust air inlet - keeps lid cool to the touch. Lid is counter- weighted for operator safety.

Designed specifically for evaporated vapor exhaust. This blower features an all stainless steel impeller with 5 year warranty. The impeller is self-cleaning backward inclined radial blade design that is electronically balanced for long continuous duty. It is belt driven with self- adjusting belt tensioner and speed variable depending on model application. Two heavy duty, greasable pillow block bearings are utilized. The blower housing is all heavy gauge, tig welded, stainless steel construction for long life.

The oil skimming weir drains through a 2” port located at the right height for a barrel, or piping can be easily installed to direct the oil to a destination. The flat sloped bottom is designed for easy cleaning. No complicated bottom geometry to create cleaning problems.

The 4” NPT clean out port is located at the low point of the flat, sloped bottom for easy clean out. Both the oil skimming weir and clean out port may be connected to the skimmer sludge pump option with the 2” NPT reducer provided.

Located at the inlet to the water vapor exhaust blower to capture droplets that might be drawn up the stack. This is to minimize carry over of oils or particulate to the atmosphere. It is easily removed for cleaning or replacement when dirty. High density mist eliminator pads are also available for capturing 10 micro particulate.

Fluid level control is maintained by a float operated ball valve. The air operated transfer pump pumps fluid from a storage tank to the evaporator. When the fluid level is low in the evaporator, the pump forces fluid through the valve, as the fluid level rises the float ball rises on the surface of the fluid closing the valve. When the tank is full, the air pump stalls against the closed valve. Fluid level, by this method, is maintained at a constant level without larger volumes of wastewater introduced to the evaporator to cool and upset the fluid already in the tank. This results in efficient steady state operation.

Redundancy level control is achieved by the use of a stainless steel lever-arm float valve assembly and a high/low level float switch assembly. The float valve assembly provides stable continuous feed into the evaporator, while the high/low level float switch monitors fluid level extremes and will shut down the burner, feed pump and indicate an alarm fault condition. Surface operating floats ignore foam and are not affected by fouling fluid concentrations or temperatures. The level switch also allows for fill control upon start up and auto restart.