| OCR Text |
Show emissions will include both continuous gaseous pollutant measurements and Level 1 analysis for potentially hazardous pollutants. This project will provide both a quantitative definition of any problem and identification of needed control approaches. Three host units have been selected, one each manufactured by Combustion Engineering (CE) [410 electrical MW] , Babcock and Wilcox (B&W) [450 MW] , and Foster Wheeler [626 MW]. The fourth unit will be selected at a later date based on test results. Baseline emissions have been measured on two units (CE and B&W) and N0X levels are at or below the pending revised NSPS. The corrosion panels will be installed on all three units during scheduled outages over the next year. If possible, part of the corrosion panels will be removed for analysis during another scheduled outage after one year and replaced with new panels which will subsequently be removed and analyzed. Stoker Coal-Fired Boilers The stoker boiler firing system can be used for commercial and industrial boilers in the range of 4 to 120 thermal MW; however, above approximately 40 MW, pulverized coal may be cost competitive. With the emphasis on increased use of coal for industrial steam generation, N0X control for stoker-fired systems must be considered. The program covers three activities discussed below: Field testing. Under joint sponsorship of DOE and EPA, the American Boiler Manufacturers Association and KVB, Inc. are performing emission field testing on ten stoker coal-fired boilers over a range of steam capacities and designs. Reports on the first two systems have been issued. Combustion modification program. A contract is in negotiation to modify the firing system on five field operating boilers to provide for N0X control. Two of the systems will be spreader stokers which is the firing mode used in larger size boilers, while three will be of the mass feed type used in smaller boilers. Based on available information, the contractor will design the 3-27 27 |
