Selective Catalytic Reduction Sample Clauses

Selective Catalytic Reduction. This test will record the inlet temperatures by installed instrumentation and the ammonia slip and NOx reduction via grab samples to verify successful specification compliance. CO emissions are not included as part of the Performance or Commissioning Tests.
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Selective Catalytic Reduction. (SCR) Deposition Units utilizing ammonia injection downstream of the gas turbine for NO(x) control can experience the formation of deposits containing ammonium sulfate and bisulfate on low temperature evaporator and economizer tubes. Such deposits are quite acidic and therefore corrosive. These deposits, and the corrosion that they cause, may also decrease HRSG performance and increase back pressure on the gas turbine. Deposition rates of ammonium sulfate and bisulfate are determined by the sulfur content of the fuel, ammonia' content in the exhaust gas, tube temperature and boiler design. Fuels having sulfur levels above those used as odorents for natural gas should be reported to GE. In addition, the presence of minute quantities of chlorides in the inlet air, may result in-cracking of AISI 300 series stainless steels in the hot gas path.
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Selective Catalytic Reduction. Selective Catalytic Reduction (SCR) involves injecting ammonia into boiler flue gas in the presence of a catalyst to reduce NOx to N2 and water. Anhydrous ammonia injection systems may be used, or ammonia may be generated on-site from a urea feedstock. SCR has been installed as NOx control technology on existing gas-fired boilers. Based on emissions data available from the EPA Electronic Reporting website, large gas-fired boilers (with heat inputs above approximately 1,000 mmBtu/hr) have achieved actual long-term average NOx emission rates in the range of approximately 0.02 to 0.05 lb/mmBtu. Several design and operating variables will influence the performance of the SCR system, including the volume, age and surface area of the catalyst (e.g., catalyst layers), uncontrolled NOx emission rate, flue gas temperature and catalyst activity. Based on emission rates achieved in practice at existing gas-fired units, and taking into consideration long-term operation of an SCR control system (including catalyst plugging and deactivation) and the fact that the Seminole boilers typically operate as peaking units, it is anticipated that SCR could achieve a controlled NOx emission rate of 0.04 lb/mmBtu (30-day rolling average) on Seminole Units 1, 2 and 3.
Sample 1
Selective Catalytic Reduction. Selective Catalytic Reduction (SCR) involves injecting ammonia into boiler flue gas in the presence of a catalyst to reduce NOx to N2 and water. Anhydrous ammonia injection systems may be used, or ammonia may be generated on-site from a urea feedstock. SCR has been installed as NOx control technology on existing gas-fired boilers. Based on emissions data available from the EPA Electronic Reporting website, large coal-fired boilers have achieved actual long-term average NOx emission rates in the range of approximately 0.04 OG&E Sooner Generating Station BART Review January 15, 2010 to 0.1 lb/mmBtu. Several design and operating variables will influence the performance of the SCR system, including the volume, age and surface area of the catalyst (e.g., catalyst layers), uncontrolled NOx emission rate, flue gas temperature and catalyst activity. Based on emission rates achieved in practice at existing coal-fired units, and taking into consideration long-term operation of an SCR control system (including catalyst plugging and deactivation), it is anticipated that SCR could achieve a controlled NOx emission rate of 0.07 lb/mmBtu (30-day rolling average) on Sooner Units 1 and 2.
Sample 1

Related to Selective Catalytic Reduction

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  • How Do I Correct an Excess Contribution? If you make a contribution in excess of your allowable maximum, you may correct the excess contribution and avoid the 6% penalty tax for that year by withdrawing the excess contribution and its earnings on or before the date, including extensions, for filing your tax return for the tax year for which the contribution was made (generally October 15th). Any earnings on the withdrawn excess contribution may also be subject to the 10% early distribution penalty tax if you are under age 59½. In addition, although you will still owe penalty taxes for one or more years, excess contributions may be withdrawn after the time for filing your tax return. Excess contributions for one year may be carried forward and applied against the contribution limitation in succeeding years. An individual who is partially or entirely ineligible to make contributions to a Xxxx XXX may transfer amounts of up to the yearly contribution limits to a non-deductible Traditional IRA (subject to reduction for amounts remaining in the Xxxx XXX plus other Traditional IRA contributions).

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