Electric Power Research Institute Incorporated

Robert L Glover

Robert E Moser

Frank B Meserole

Gordon Maller

Gerard B Maybach

Carl Richardson

Timothy Hanley

Verle V Bland

Thomas King

An on-line control and monitoring system for automatically and continuously analyzing key process indicators in a wet lime/limestone flue gas desulfurization process is provided. The on-line control and monitoring system obtains a slurry and/or a slurry flitrate which is directed at selected fluid flow rates to one or more analytical devices each selected to analyze a flue gas desulfurization process indicator. Data is provided to a data acquisition system which processes the analysis results from the analytical devices and provides flue gas desulfurization process control information. This on-line monitoring and control system can be used to monitor and control the addition rate of performance enhancement additives such as organic acids, thiosulfate, oxidation air and the like.

On-line control and monitoring system for wet lime/limestone flue gas

A continuous filtration system for supplying an uninterrupted supply of filtrate from a solids-containing industrial process suitable for use by on-line automatic analyzers is provided. The continuous filtration system, which is particularly useful for filtering flue gas desulfurization process slurry to produce a solids-free filtrate for autoanalysis, includes a pair of filters connected in series which concurrently receive a tangential flow of slurry into the filter head that is discharged perpendicularly through a filtrate head. An automatic flushing system is provided to keep the filter membranes free of solid particles. An optional autoanalyzer for unfiltered slurry may also be included in the system.

Two continuous filtration system for supplying filtrate to automatic

System and method for continuously monitoring the wet bulb temperature in a flue gas stream, for example, at the inlet of a spray dryer. A sample of the flue gas is maintained at substantially the same moisture content and temperature as the gas in the flue. The temperature of this sample is measured with a sensor surrounded by a liquid absorbent wick which is immersed in liquid maintained at a substantially constant level.

System and method for monitoring wet bulb temperature in a flue gas

System and method for continuously monitoring the wet bulb temperature in a flue gas stream, for example, at the inlet of a spray dryer. A sample of the flue gas is filtered and reheated to substantially the same temperature as the gas in the flue. The temperature of the reheated sample is measured with a sensor surrounded by a liquid absorbant wick, immersed in liquid maintained at a substantially constant level in a reservoir.

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Lockport, NY, United States of America

Robert L Glover