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RECORD NUMBER: 197 OF 312

Main Title Limestone Scrubber Slurry Automatic Control Systems.
Author Garrett, P. H. ;
CORP Author Cincinnati Univ., OH.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-R-805758; EPA-600/2-84-019;
Stock Number PB84-148766
Additional Subjects Air pollution control ; Slurries ; Scrubbers ; Automatic control ; Flue gases ; Recirculation ; Mathematical models ; Sulfur dioxide ; pH ; Industrial wastes ; Combustion products ; Limestone scrubbing ; Waste recycling ; Flue gas desulfurization
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NTIS  PB84-148766 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 93p
Abstract The report utilizes current understanding of limestone scrubbers for flue gas desulfurization (FGD) to develop an effort into the optimization of automatic control for the recirculating slurry processes. The acknowledged methods of mathematical modeling, computer simulation, and experimental proofing are applied to the design of slurry limestone addition, slurry density, and absorber liquid-to-gas (L/G) ratio control systems. Three automatic control methods are analyzed for dense limestone feedrate to the recirculating slurry: stoichiometric control, pH control, and stoichiometric-assisted pH control. Absorber L/G ratio control for minimizing scrubber energy requirements while maintaining an SO2 exit target is also designed, based on a feedforward SO2 removal law and slurry pump selection.
NTIS Title Notes Final rept. Mar 78-Mar 81.
PUB Date Free Form Jan 84
Category Codes 13B; 68A
NTIS Prices PC A05/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 411840272
Origin NTIS
Type CAT