VERSATILITY AT ITS BEST!
A unique adaptation of Spiral Heat Exchangers is for heating viscous products, high solids suspensions, or fouling process slurries with either steam or condensing vapors.
When faced with the problem of keeping a large final
product storage tank heated while assuring
continuous agitation of its highly viscous and sticky
contents, a client chose a GTS spiral heat exchanger specially
configured for this critical service at a major refinery
and petrochemicals complex in the East Coast.
The Spiral Heat Exchanger Type 3.1-H (picture) offers efficient heat transfer, despite extreme laminar flow behavior on the product side and has fulfilled client's requirement of providing for effective agitation and mixing via external re-circulation of the product as it remains in storage prior to shipment in tankers. Due to limited space and tight proximity to the storage tank, the compactness of our novel solution (60" W x 115" L x 65" H) made for an ideal installation without sacrificing accessibility. Channel ends of the spiral body are welded closed at alternate edges such that hot and cold media are fully isolated and separated in their respective chambers. In a horizontal steam heater vapor enters through a side extension and makes two passes in cross-flow through the uniquely baffled annular space of the body as it condenses. On the cold side the product is sealed by a removable cover in its respective single and smoothly curving spiral flow passage that revolves around the horizontal axis of the exchanger. In this flow orientation, the spiral rectangular flow cross-section provides for optimum flow distribution, which reduces channeling and stratification risks due to high viscosity even at low channel velocities and in laminar flow regimes, thus assuring reliable heat exchanger operation and high performance output.