OCR Text |
Show 14 Environment Canada is presently working with industry and government on the development of NOx measurement and sampling methods for publication in 1994. 4.0 CONCLUSIONS The efforts of the multi-stakeholder working group have resulted in a fair and reasonable national emission guideline for stationary combustion turbines. The Guideline is unique in that it is based upon overall plant thermal efficincy, and attempts to deal with most of the common pollutants in the exhaust. When the Guideline• provisions are fully implemented, NO x emissions on new gas turblnes should be reduced to levels of 20 to 50 percent of those on existing uncontrolled machines. Preliminary estimates indicate that if these levels were to be met on the approximately 5000 MW of new engines to be installed between now and year 2000, a 25 kilotonne/year reduction from uncontrolled levels would be achievable by the end of the decade. This would contribute to the national ozone prevention program, as well as improving air quality in populated regions. The national Guideline is specifically aimed at new and modif ied units. In order to br ing about a more sUbstantial national NO reduction, users and manufacturers should consider promoting the installation of proven new technologies on existing equipment where appropriate. The widespread use of dry 10W-NO~ combustors in a larger number of plants will offer gOOQ opportunities for the industry to prove the reliability of the equipment, and to enhance the applications for a relatively clean and efficient source of energy. Environment Canada administers an Accelerated Capital Cost Allowance program to help industry reduce the short-term economic impact of air and water pollution control projects on existing plants. If half of Canada's recently installed equipment (about 3000 MW) could be retrofitted with DLN combustors by year 2000, there would potentially be an additional 20 kilotonne per year reduction in national NOx production. |