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Product News - High-Temperature Filter Keeps Heat Transfer Fluids Efficient

High-Temperature Filter Keeps Heat Transfer

Fluids Efficient

PN 4a-5/99The HTF Series of skid-mounted pumpless filter housings are designed to economically maintain the efficiency of heat transfer fluids and oils by filtering out contaminants such as coke and sludge. They do this by reducing fouling of heat exchanger surfaces.

Operating at temperatures up to 650 F, the filter is said not only to clean and maintain efficiency of heat transfer fluid and oil, but also such heat users as reactors, heat exchangers, jacketed tanks, extruders, molders and fryers.

The filter is said to continuously clean fluid without disrupting filter operation, reducing wear of rotating assemblies (pump rotors, impellers, seals, valves and stems). The claimed result is an increase in production and heat transfer efficiency with simple maintenance.

Cost due to fluid degra-dation is re-duced, wear of dynamic seals is  optimized and burnout or cracking of the heater surfaces is reduced.

The unit uses a glass-fiber-reinforced composite, filament-wound disposal filter element that is said to have good dirt holding capabilities and to be easy to maintain. A flashing light reminds the operator that the filter element needs to be replaced when contaminated and clogged.

For maintenance, users remove the contaminated filter element and insert a new one. Downtime is minimal. Initially, filter element change-out depends on the existing level of contamination. The life of the element can be from three to six months, depending on the operation.

The HTF Series filters come in sizes to accommodate heat systems from small portables to very large boilers. They are available in flow rates of 5, 15, 30, 60 and 90 gal/min.

A percentage of the fluid is directed from the high-pressure side of the heating system through the filter and discharged to the low-pressure side.

In operation, fluid is drawn into the filter unit by tapping off the existing piping and diverting a percentage (usually about 10%) through the filter unit. The fluid is then cleaned and reintroduced down stream or to the suction side of the existing recirculation pumping system.

Thus, instead of replacing fluids, it can be cleaned continuously and used with extended life. Price is $640.

Liquid Process Systems, Inc.
Charlotte, NC

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