Single Solution that Reduces Power Plant Heat Rate, Emissions, and Operating Costs

摘要

This article presents background and the test results for a NO_x control solution for pulverized coal-fired power plants (E-NO_x). It provides a non-parasitic resolution of the operating challenges related to use of Low/Ultra-Low NO_x burners for in-furnace control and SCR or SNCR for post-combustion nitrogen oxides reduction. The major results of CFD modeling and test data are presented confirming E-NO_x capabilities to reduce NO_x and consequently consumption of ammonia/urea for units using post-combustion NO_x control. Basic steam plant performance analysis per ASME codes in combination with tests data suggested appreciable reduction of a plant heat rate. The results of economic studies of E-NO_x applications for power plants with different means of NO_x control are presented in this article demonstrates a simple payback period to be within 8 to 16 months. This is the first environmental technology that pays for itself thanks to a decrease in both fuel and NO_x reducing reactants consumption, as well as lowering maintenance costs as presented by an economic analysis in Table 3.