Online Exporter Water Cooled Heat Exchanger Design - Precipitation Cooling Heat Exchanger in Alumina Refinery – Shphe

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Online Exporter Water Cooled Heat Exchanger Design - Precipitation Cooling Heat Exchanger in Alumina Refinery – Shphe Detail:

Challenge

The challenge before all Alumina Refineries lies in maximizing the yield across precipitation and thereby production while maintaining the quality of alumina tri-hydrate which is either sent to Calcination unit or sold to customers for other applications. Over the last decade or so many Alumina refineries in the world have standardized on use of Inter Stage coolers to achieve this objective by cooling the precipitated slurry in Welded plate heat exchangers. The hydrate particles in the precipitated slurry are abrasive and can gradually wear metal surfaces in heat exchanger surfaces. Additionally, fouling on heat transfer surfaces can occur due to precipitation of aluminum hydroxide and other chemical compounds.  This results fouling which reduces the performance of the heat exchanger and overall system performance.

However, periodic corrective steps, which include chemical and mechanical cleaning, can reduce maintenance downtown (i.e. frequency and length).  Conversely, heavy fouling combined with limited performance of regular maintenance can decrease heat exchanger efficiency or worse, result in catastrophic heat exchanger failure.

Consequently, Client requests a heat exchanger design to reduce or eliminate: plate fouling, reduce maintenance down time, and heat transfer surface (alloy plate) wear, thereby increasing productivity and system profitability.

Wide Gap Welded Plate Heat Exchanger (WGPHE) Features

WGPHE from Shanghai Heat Transfer Equipment Co., are custom designed using finite element analysis.  Moreover, the WGPHE is specifically constructed for heating or cooling of viscous or high solid containing process liquids.  For example, process fluid which contain abrasive particles found in alumina or suspended long fibers found in food or ethanol mash.

An extreme application that demonstrates the impressive performance of the WGPHE is the Inter Stage Cooler of the alumina process.  SHPHE has manufactured and delivered over 2000 WGPHEs and satisfactorily supplied  them – both as OEM and replacement applications for many years for the alumina inter-stage cooler.  A list of successful installations available upon request.

The WGPHE is designed to not only manage non Newtonian clogging liquids but also to resist abrasion caused by hydrate particle in slurry. Specifically, the WGPHE is formulated with fused metal coating applied to selected high wear areas of the heat exchanger.  The result significantly increases life cycle coupled with reduction in cost of ownership.

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Visible straight line flow channel

The WGPHE is frequently specified in other industrial applications including; ethanol, food processing, pulp & paper, sugar production and chemical process industries. Moreover, Shanghai Heat Transfer Equipment designs the WGPHE to solve many unique thermal transfer challenges where either clogging or abrasion is a major issue.  The WGPHE thermal efficiency is considerably higher than a shell & tube heat exchanger contributing further added economic value when considering this replacement.

Shanghai Heat Transfer WGPHXs Successfully Commissioned and operational in Australia

SHPHE was awarded order in 2020 and 2021 by an Australian client for replacement of failed precipitation cooling heat exchanger manufactured by others in the plant. They are now successfully performing as requested and promised.

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Precipitation cooling heat exchanger in Australia


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Online Exporter Water Cooled Heat Exchanger Design -
 Precipitation Cooling Heat Exchanger in Alumina Refinery – Shphe detail pictures

Online Exporter Water Cooled Heat Exchanger Design -
 Precipitation Cooling Heat Exchanger in Alumina Refinery – Shphe detail pictures


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  • The goods we received and the sample sales staff display to us have the same quality, it is really a creditable manufacturer.
    5 Stars By Colin Hazel from Barbados - 2017.06.16 18:23
    The supplier cooperation attitude is very good, encountered various problems, always willing to cooperate with us, to us as the real God.
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