COGEN PLANT FIRST TO USE NEW HIGH-TEMPERATURE DE-NOX PROCESS

Unocal Science & Technology Division is the first to use the selective catalytic reduction (SCR) process to reduce NOx emissions in high-temperature, gas turbine-exhaust operation. The system is installed as part of a full-scale, gas turbine cogeneration plant that supplies steam and electricity to Unocal's research facility in Brea, Calif. It has been in continuous operation there since December 1990. The system has consistently Maintained outlet NOx emissions at less than 9 ppmv, with

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