Scrubber Chemistry - Wpca.info

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What Are Chemical Reactions?• Two or more reactants (molecules) combining(reacting) to form different products• Reactants and products can be gas, liquid orsolid• Examples:− SO 2 (g) + H 2 O H 2 SO 3 (aq)− Ca ++ + SO=4 + 2H 2 O CaSO 4 *2H 2 O• The rate of a reaction depends on:− Nature and concentration of the reactants andproducts− Temperature
Types of SolutionsGas-Liquid(CO 2and Water)Solid-Liquid(Coffee and Sugar)Liquid-Liquid(Gin and Tonic)Solid Solution(A crystal whichcontains a mixtureof molecules fromtwo differentsolids)
Page 1 and 2: Duke Energy SeminarSeptember 3 - 5,
Page 3: Presentation Outline• FGD Chemist
Page 7 and 8: Acids and BasesDefinition: Acid = p
Page 9 and 10: Overall Chemistry of a Limestone Fo
Page 11 and 12: Wet Limestone Forced Oxidized Proce
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Page 15 and 16: Mass Transfer and Reaction Steps Oc
Page 17 and 18: Acid-Base Equilibrium ReactionsSO 2
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Page 21 and 22: Solid-Phase AlkalinityExamples:Abso
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Page 25 and 26: What is Present in the Liquid Phase
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Page 29 and 30: Factors that Determine Type of Gyps
Page 31 and 32: Gypsum Crystal: Triclinic System(No
Page 33 and 34: FGD Gypsum Solids From Different Pr
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Page 37 and 38: SO 2 Removal Efficiency (cont.)Key
Page 39 and 40: Causes of ScalingKey Factors• Oxi
Page 41 and 42: pH / Utilization / SO 2 RemovalRela
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Page 53 and 54: Scaling and Solids BuildupCommon ar
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Causes of Scaling in FGD SystemsHig
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Causes of Scaling in FGD SystemsWet
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Poor SO 2 Removal as Result ofMecha
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Poor Gypsum Byproduct Quality• Hi
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Scrubber Chemistry - Wpca.info

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