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SK Chemicals chooses GEA Messo PT technology  

By Gerald Ondrey |

GEA Messo PT’s (Hertogenbosch, the Netherlands; www.gea-messo-pt.com) proprietary crystallization technology was chosen by SK Chemicals (Gyeonggi-do, Korea; www.skchemicals.com) for its large-scale facility for the production of poly phenylene sulfide (PPS) in Ulsan, South Korea. The GEA crystallization technology demonstrated its versatility to ultra-purify the non-chlorine monomer raw material and provide high recoveries through the use of GEA’s continuous suspension-based melt crystallization process. GEA Messo PT was said to be chosen because of its unparalleled experience in this field. The GEA melt crystallization technology was considered the most reliable and economic method for purification of this material, says the company. After successful completion of initial pilot scale tests at GEA’s test facility in the Netherlands a semi-commercial scale unit was constructed and installed at the SK Chemical site in Ulsan. This semi-commercial scale plant has been operating successfully since 2010. GEA’s experience with high-temperature melt-crystallization applications helped pave the way for further development in this specific application. Ultra-high purity product, maximum recovery and minimal operating…
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Andritz

PTA production: Lowering OPEX without compromising on quality

A paper that looks at how the earlier PTA production method involving a multi-stage process with pressure and atmospheric centrifuges and a re-slurry tank can be replaced with one stand-alone device – the rotary pressure filter (RPF).

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