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Servomex is to design and supply a complete gas monitoring system for a pure terephthalic acid (PTA) plant being built by Artenius, a subsidiary of La Seda de Barcelona, at Sines in Portugal.

Servomex will supply seven Servotough Spectraexact (2500) process gas analysers and seven Servotough Oxyexact (2200) process oxygen analysers, as well as manage the design and build of the overall analyser system for the Sines plant.

In addition to supplying analyser technology, Servomex was chosen by Artenius on the basis of its expertise in the installation of gas monitoring systems for PTA production.

While a typical system at PTA plants brings the process monitoring system together within a single, purpose-built analyser house, Servomex has for this project recommended placing each analyser close to each measurement take-off point.

By removing the need for a bespoke analyser house and associated cabling and piping requirements, the result is a cost saving and the reduction of additional infrastructure.

The Spectraexact series of photometric process analysers offers single or dual component measurement to suit virtually any process, combustion or emissions gas analysis application, while the Oxyexact utilises Servomex’s paramagnetic oxygen transducer technology for optimum process and safety control in general and high-temperature applications.

In combination, Servomex said that the Spectraexact and Oxyexact will provide a total, accurate and reliable solution for the monitoring of PTA processes at Sines, with both analysers offering a rugged, durable construction that make them suitable for use in challenging PTA production environments.

The agreement, contracted to Servomex through Aker Solutions UK, will cover the supply of analysers, sampling systems, spare parts and service to Sines, which will produce 700,000 tonnes a year of PTA – a primary material used in the manufacture of PET packaging.

‘The agreement reached with Servomex will allow us to monitor and control gases as part of our rigorous safety procedures,’ said Rafael Espanol, president of La Seda de Barcelona.

‘It will also help limit our environmental impact and deliver an important cost reduction in building additional infrastructure for the new Sines plant,’ he added.

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