CRI NEWSROOM

March, 2004




March 1, 2004 Successful Installation and Startup of the Second Low Temperature SCR Retrofit System at the Cinergy Power 4 Gas Turbine Cogeneration Plant at BP Products North America, Texas City, Texas.

In late February, a CRI Low Temperature SCR system was successfully started up on the second unit at the Power 4 Gas Turbine Cogeneration Plant operated by Cinergy at the Texas City site of BP Products North America. The SCR on the first unit, identical to the second, was started up in February, 2003.
The Power 4 facility consists of two GE Frame 7E gas turbines with heat recovery steam generation. SCR was retrofitted on these two units as part of the BP Project Blue Skies program to meet the new NOx emission reduction requirements of the Texas Commission on Environmental Quality (TCEQ) for the Houston/Galveston region.

The Power 4 gas turbines are fired with natural gas and the flue gas exhaust temperature is 350 F (177 C).The CRI Low Temperature SCR Catalyst system was installed downstream of the HRSG economizer outlet and was designed for horizontal flue gas flow through the SCR catalyst. The existing stack was relocated and the SCR catalyst was installed in a reactor house located immediately before the stack and following a new transition section from the HRSG exhaust to the SCR reactor inlet. Installation of the CRI Low Temperature SCR catalyst after the HRSG avoided any modifications or impact to the existing HRSG or gas turbine. The CRI SCR was designed to treat approximately 2,500,000 #/hr of flue gas at 350F. Design and guaranteed SCR performance was 95% NOx reduction to a maximum of 3.5 ppmvd @ 15% O2. NH3 slip limit is 10 ppmvd.

CRI supplied the SCR catalyst and all reactor house internals including the sealing system. On startup, NOx and NH3 emissions from the SCR were significantly below the required limits. The first SCR unit at Power 4 has been in operation for more than one year and NOx and NH3 emissions have remained significantly below limits.