Crowborough, UK - Gas analysis company Servomex is to supply a complete gas analysis monitoring system for a new toluene diisocyanate (TDI) plant currently under construction in Dahej, India.
Chematur Engineering AB of Sweden has selected Servomex and its channel partner OmniProcess AB to supply these critical instruments to the new 50 kilotonnes-per-annum capacity plant is is building on behalf of Indian chemical manufacturer GNFC (Gujarat Narmada Fertiliser Co.).
Servomex said in a 24 June announcement that the system will help control the TDI production process and monitor the quality of TDI output.
The Crowborough, UK-based company said it will supply various gas analysers to fulfill the complex requirements of TDI monitoring. These include 15 Servotough SpectraExact (2500) process gas analysers, two Servopro 4210 gas purity analysers, one Servotough OxyExact (2200) paramagnetic oxygen analyser and three k1550 katharometer-based analysers.
"TDI production is by its nature a complex process, so Servomex is delighted to have been selected once again by Chematur to supply this gas analyser system through OmniProcess AB," commented Chris Cottrell, Servomex's managing director, in the company statement. "We have been chosen not simply on the acknowledged quality of our instruments, but in our ability to deliver a complete gas analysis solution that ranges from the design and build of the system to providing 'local-for-local' service and support in India."
Equipment that the company will provide includes the Servotough SpectraExact, a photometric process analyser with single- or dual-component gas analysis which, according to the company, is "ideal for several TDI measurement processes, including monitoring the off-gases from mixing chlorine with carbon monoxide to make phosgene, and monitoring for both carbon monoxide and chlorine in phosgene."
Control of the residual oxygen concentration in pure carbon monoxide in the range 0 - 0.5 percent will be made using the Servotough OxyExact 2200. Two Servopro 4210 gas-purity analysers will monitor the level of trace carbon monoxide in pure hydrogen and of methane pure carbon monoxide. Finally three k1550 katharometer analysers will monitor the hydrogen purity and the quality of carbon monoxide supply to the TDI process by checking the level of residual hydrogen remains between 0 and 1 percent.
Serovomex said that Chematur selected Servomex not only for its world-leading experience in offering reliable and accurate process analysers, but on "proven experience in the design and build of TDI analyser systems," and for it ability to offer high levels of service and support.
The TDI plant is scheduled for completion in September 2010.