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Plastics Manufacturer Improves Process with DSI

The slurry required heat added prior to dewatering in a centrifuge. Indirect methods of heating were not considered because of the high potential for the slurry to foul the barrier heat transfer surface. For this reason, a competitive direct-contact steam heater was being used; however, the heater hammered violently, compromising pipe fittings and supports. Periodically, the PVC slurry would back-flow into the steam supply line and harden, requiring disassembly for acid bathing.

The Hydroheater was evaluated for this application because of its ability to handle viscous slurries with high solids. Internal modulation of steam in the Hydroheater would eliminate the hammering problems and the potential for the PVC slurry to back-flow into the steam lines.

Hydroheaters were installed and have been operating since 1987. The hammering problems associated with the competitive heater have been eliminated. Internal modulation of steam in the Hydroheater prevents the slurry from back-flowing into the steam supply lines. The need for routine cleaning has been eliminated due to its self-cleaning design.

Operating Conditions

Unlike heat exchangers or spargers, the Hydroheater^® is designed only for your process conditions and unique application. We need to know a few things about your conditions, such as temperature range, steam pressure, and flow rates to size a heater specifically for you. When you click on our application data sheet and fill in the information, we will contact you within one business day. After an initial conversation with a sales representative or one of our engineers, we will then provide you with a custom quote for the Hydroheater best suited for your process.

Yes, I want to save energy and have more control using direct steam injection. Please complete the Application Data Sheet which helps us understand your process conditions such as fluid density, flow rates and temperature parameters.