Leading OCTG producer Tenaris has recently implemented new efficiencies in the coating booth at its state of the art seamless facility in Bay City in Texas, optimizing the use of water based varnish and further reducing the emission of volatile organic compounds. A key component in this initiative was the installation of a prefilter system and the improvement of a capture system in the line that processes through the facility’s thermal oxidizer, which destroys 98% of the few VOCs present through the use of high temperatures.

Adaptations were made to the water-based varnish application process and exhaust system in the finishing area, reducing overspray and waste. This resulted in a 42% improvement in the use of varnish coating and a reduction of 35% in varnish waste per ton. In addition, a varnish recovery process was put in place, which yields 30% of the recovered varnish for reuse.

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