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Ppl Electric Utilities Corporation

Ali Yilmaz

Edward Kenneth Levy

Harun Bilirgen

Noel Moyer

James P Batug

Carlos E Romero

An adjustable device installed at the inlet of conventional junctions/splitters ( ) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of flow control elements ( ) each positioned upstream of a plurality of flow channels in the riffler ( ) for directing coal flow to the outlet pipes. Each flow control element preferably comprises a rounded convex edge leading to straight tapered sides (FIG. ). The surfaces of the sides may be roughened or textured ( ) for promoting turbulent boundary layers (FIG. ). In addition, conventional fixed or variable orifices may be used in combination with the flow control elements for balancing primary air flow rates. The device allows fine-adjustment control of coal flow rates when used in combination with the slotted riffler, yet it has negligible effect on the distribution of primary air. The combination of the riffler assembly and the coal flow control elements ( ) results in closely balanced coal flow. Balanced coal flow is imperative to the optimization of the operation of pulverized coal boiler systems (i.e. reduced pollutant emissions, improved combustion efficiency).

Adjustable flow control elements for balancing pulverized coal flow at coal pipe splitter junctions

An emission measuring system and method provide an accurate, real-time calculation of a particular material emitted from an emission source. Specifically, a CEM system installed in an industrial stack can include a dilution probe located in the stack and a data analyzer that records and analyzes characteristic data of the materials sampled by the dilution probe. A dilution ratio is used to correct for the addition of dilution gas into the stack gas sample to determine the concentration of a particular material that is being emitted from the stack. The dilution ratio is based on a molar flow rate, which can be determined by using specific algorithms and measurements.

Emission monitoring system and method

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Worchester, MA, United States of America

Ali Yilmaz