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INVISTA Performance buys Kalpyog's residue recovery technology

27 Jul '09
2 min read

INVISTA's technology and licensing group, INVISTA Performance Technologies, has acquired a unique residue recovery technology from Kalpyog Chemicals Pvt. Ltd.

As a leading supplier of terephthalic acid production technology, INVISTA understands that even the best technology cannot eliminate the by-products that result from impurities generated in the paraxylene oxidation process. While these by-products must be purged from the process and are often burned as waste, they can actually yield valuable chemical components using recovery technology.

“At present, there are a range of options for dealing with such residues,” said Michael Pickens, general manager of INVISTA Performance Technologies. “A few processes are available that attempt to recover, at best, one or two of the valuable components in the residue stream. However, until now, none could treat the whole stream.”

The technology, referred to as INVISTA's R2R Technology, should result in the recovery of over 90 percent of the chemicals in the plant residues stream, reducing by-product waste. These valuable chemicals can either be returned to the process or offered for commercial sale.The straightforward yet comprehensive process yields low operational cost and can easily be retrofitted to existing purified terephthalic acid (PTA) and terephthalic acid plants of any technology.

With world PTA demand in 2008 reaching 38 million metric tonnes, a conservative estimate would put the quantity of residues produced between 250,000 and 300,000 metric tonnes per year. This technology can result in environmental and financial benefits by recovering useful chemicals that would otherwise be eliminated as waste.

With its acquisition of Kalpyog Chemicals Pvt. Ltd's plant residues recovery technology, INVISTA is making an innovative and valuable technology solution available to the terephthalic acid industry, a key raw material for polyester.

This innovative residue recovery technology is available as a licence package exclusively from INVISTA.

INVISTA

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