The Virginia Department of Environmental Quality is taking public comment until Sept. 2 on a draft air permit renewal and air permit change for the coal-fired plant of James River Genco LLC.
James River Genco is a cogeneration plant that has the ability to produce electricity for sale to Northern Virginia Electric Cooperative along with currently processing steam for sale to a host industry. The facility consists of six Foster-Wheeler stoker boilers rated at 200 million BTU/hour heat input each. The combined exhaust of three boilers exits one of the two stacks. The plant fires coal and natural gas. In addition to the boilers, the facility has associated ash and coal handling systems.
Permit requirements include that:
- particulate emissions from each of the six Foster Wheeler boilers (1A, 1B, 1C, 2A, 2B, and 2C) need to be controlled by a baghouse (except when solely firing natural gas in units 1A, 1B, and/or 1C);
- SOx emissions from each of the six Foster Wheeler boilers (1A, 1B, 1C, 2A, 2B, and 2C) shall be controlled by a flue gas desulfurization (FGD) system (except when solely firing natural gas in units 1A, 1B, and/or 1C);
- the average sulfur and ash content of the coal to be burned in the boilers (1A, 1B, 1C, 2A, 2B, and 2C) shall not exceed 2% and 11% by weight, respectively, per shipment; and
- the Foster Wheeler boilers (1A, 1B, 1C, 2A, 2B, and 2C) shall consume no more than 430,992 tons of coal annually.
Said the Cogentrix website about this plant: “The James River Genco, LLC facility is an upgraded version of the plant originally developed and constructed by Cogentrix in 1987. The plant is a nominal 110 MW coal-fired cogeneration facility located in Hopewell, Virginia. As it has since it was placed into commercial service in 1987, Hopewell continues to provide steam to Honeywell International Inc. for their process needs under a long term purchase contract.”
The website added: “In 2004, Cogentrix retrofitted the plant with Enhanced Overfire Air technology to reduce oxides of nitrogen, (‘NOx’) emissions. This retrofit resulted in an almost 30% reduction in plant NOx emissions. In 2008 Cogentrix completed the installation of flu-gas scrubbers, new cooling towers, as well as upgrades to the plant’s waste water treatment system. These upgrades resulted in a reduction of sulfur related emissions (‘SOx’) and a further reduction of any mercury (‘Hg’) emissions.”