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# RCRA Box 1883 Prepped byOllie Stewart



### Document

Number: 

# 97 ) ll-B-25 9 Docket Number: 

# A-90-1 9

Printed 12/3/200810:42:16

AM Sheet 97 of 171MEMORANDU M P. 2 

## A-90-1 9 ll-B-25 9

DATE : TO : FROM : SUBJECT : February6 , 199 2

HO NProjec t

File s 6. 1 an d6. 2jfnl[ f j .jji_Jl__ Wil l' Thoma s Olse nan dKristin eScott , Radia n) 

# y i! : 

## j SE P1 4 199 2 '[• ' Estimatio n o f SecondaryImpact s fo r HO Nj j |

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d Proces s Vent s Th e purpos e o f thi s memorandu mi s t o documen t th e procedure s use d t o estimat e secondaryenvironmenta l an d energ yimpact s associate d wit hcombustio n contro l o f proces s vent s an d transfe r loading operations . Th e secondaryimpact s o f combustio ncontro l include d ai r pollution , wate r pollution , an d additiona l energ

y use . Ther e ar e n o significan t soli d waste s generate d throughus e o f therma l oxidation . Asmal l amoun t o f soli d waste , consisting o f spen t catalyst , coul d resul t throughus e o f catalytica l oxidation . Sectio n 1. 0 discusse s th e secondaryai r impact s estimating methodology . Sectio n 2. 0 discusse s th e wate r pollutio nimpact s an d Sectio n 3. 0 present s th e procedur e t o estimat e energ y impacts . 1. 0 SECONDARYAI RPOLLUTIO NIMPACT S Secondaryai r emission s ar e generate d a s a resul t o f combustio n o f organi c HAP an d VO C i n th e ven t strea man d auxiliaryfue l i n an incinerato r o r flare . Th e secondaryai r pollutant s fro

mcombustio n includ e nitroge n oxide s (NO x ) an d carbo n monoxid e (CO) . Th e estimatio no f thes e tw o criteri a pollutant s ar e discusse d i nth e following sections . 1. 1 EMISSION S ESTIMATIO NO F NITROGE NOXIDE S Emission s o f NO xar e estimate d base d on th e typ e o f combustio n devic e utilized . NO xemission s fro m incinerator s ar e generall ybelo w10 0 pp mexcep t fo r case s wher e nitrogenou s compound s ar e containe d in th e iner t stream . Tabl e 1 present s th e N0 Xemissio n factors . Fo r ven t stream s whic hd o no t contai n

secimpChtmCK ) (Is )TABL E 1 . N0 XEMISSIO NFACTOR S P. 3

Typ e o f Combustio n Contro l Devic e Nitrogeneou s Compound s i n Iner t Strea

m Emissio n Facto r Concentratio n

o f N0 Xi n Outle t Strea

m Therma l Incinerato r Therma l Incinerato r Flar e No Ye s .0 5 l b

mmBt u Tota l Hea t Inpu t 4 0 ppm v 2 0 0 ppm v

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nitrogenou s compound s an d ar e controlle d b yincinerators , an outle t concentratio n o f 4 0 ppm vNO xwa s assumed . Fo r ven t stream s containing nitrogenou s compound s tha t ar e controlle d b y incinerators , an outle t concentratio no f 20 0 ppm vNO xwa s assumed . ' NO xemission s fro m flare s wer e calculate d base d on th e tota l hea t inpu t o f th e VO C presen t i nth e ven t stream . Tabl e 1 present s th e emissio nfacto r use d t o calculat e NO x emissio n impact s fo r flares . 1. 2 EMISSION S ESTIMATIONO F CARBO NMONOXID E Fo r proces s ven t streams , emission s o f C O ar e estimate d base d o n th e hea t inpu t o f th e ven t stream . Tabl e 2 present s C O emissio n factor s use d t o calculat e C O emissio nimpact s fo r proces s ven t streams . Th e emissio n factor s wer e derive d base d on c th e combustio n o f natura l gas . Fo r transfe r ven t streams , emission s o f C O ar e estimate d base d on th e siz e o f th e incinerato r a s determine d b yth e auxiliaryfue l flowrate . Tabl e 3 present s C O emissio nfactor s use d t o calculat e C O emissio nimpact s fo r transfe r ven t streams . 2. 0 WATE RPOLLUTIONIMPACT S Contro l o f HAP an

d VO C emission s throughus e o f a combustio n devic e doe s no t resul t i n th e generatio n o f wast e wate r effluents . However , ven t stream s containing halogenate d compound s mus t b e furthe r controlle d throughth e additio no f a scrubbe r t o remov e th e resulting aci d gas . Th e us e o f a scrubbe r result s i n a relativel ysmal l increas e i n wastewate r generation . Thi s increas e generall ydoe s no t affec t plan t wast e treatmen t o r sewe r capacity . Th e amoun t o f wastewate r generate d i s equa l t o th e amoun t o f wate r require d b

yth e scrubbe r designt o absorbth e aci d ga s leaving th e incinerator . Fo r th e purpos e o f th e HO Nanalysis , a scrubbing liqui d t o vapo r rati o o f 1 7 gallon s (o f scrubbe r flow ) pe r 100 0 scf mo f vapo r measure d a t th e scrubbe r inle t wa s used . Thi s rati o represent s an averag e liqui d t o vapo r rati o base d on a vende r survey . secimp(htm0<i ) (Is )P. 5

TABL E 2 . CARBO NMONOXID E EMISSIO NFACTOR S FO RPROCES S VEN T STREAM S Tota l Hea t Inpu t (THI )

(Btu/hr ) Emissio n Factor 3 (l bCO/10 6 ft 3 Natura l Gas ) T H K IO 7 IO 7 < TH I < IO 8 TH I > IO 8 2 0 3 5 4 0 a Assume d (100 0 Btu)/(sc f natura l gas )

TABL E 3 . CARBO NMONOXID E EMISSIO NFACTOR S FO RTRANSFE RVEN T STREAM S Auxiliar yFue l Flo wRat e

(FR ) (scfm ) Emissio n Facto r (l bCO/10 6 sc f o f fuel ) FR < 16 7 167< = F R< 166 7 F R> 166 7 2 0 3 5 4 0

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3. 0 ENERG

YIMPACT S Energ yimpact s fro

mcombustio ncontro l includ e increase d fue l usag e t o supplemen t th e firing o f th e combustio ndevic e an d increase d electricit yus e fo r th e collectio nan d ducting o f th e ven t strea

m t o th e contro l device . Th e estimatio no f thes e two impact s i s discusse d i n th e following sections . 3. 1 FUE L IMPACT S Th e us e o f a combustio n devic e generall yresult s i nan increase d ne t fue l usag e fo r devic e startup , supporting combustio n o f th e ven t stream , o r t o promot e flame stabilit yi f th e hea t conten t o f th e ven t strea mi s low . Th e fue l impact s ar e equa l t o th e design fue l requirement . Th e fue l requirement s ar e dependen t o n th e flowrat e an d th e hea t conten t o f th e VOC/HAP stream . rl ' Th e volumetri c flowrat e o f th e auxiliaryfue l (scfm ) i s calculate d base d o n equatio n3.1 8 i n th e OAQP S Contro l Cos t Manua l (OCCM) . Th e flowrat e o f th e fue l i s the nconverte d t o energyinpu t (Btu/min ) b yth e following conversio nfro mth e OCCM 10 : Auxiliaryfue l energ yinpu t = p - * Q - * (-Ahc ) f

where : Pa f = Fue l densit y(lb/ft 3 ) Q a f = Fue l flowrat e (scfm ) (-Ahc) a f = Fue l hea t o f combustio n (Btu/lb ) Th e auxiliaryfue l wa s assume d t o b e methane . Th e following conversio n wa s used : Energ yInpu t = fue l flowrat e (scfm ) * 0.040 8 i b* 21,50 2 Bt u ft 3 l b

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3. 2 ELECTRICITYIMPACT S Electricit yi s require d t o operat e th e fans , blowers , an d instrumentatio n necessaryt o transpor t ven t stream s an d combustio n ai r t o a flar e o r incinerator . Electricit y requirement s an

d cost s ar e base d o n th e ven t strea mflowrate , pressur e drop , an

d th e design o f th e contro l devic e fan s an d ar e documente d i n a separat e memorandum . However , i t shoul d b e note d tha t th e pressur e drop equatio nbecame invali d a t flowrate s les s tha n 9 3 scfm . Therefore , fo r stream s wit hflow s below9 3 scfm , electricit ycost s wer e no t realisti c an d wer e adjuste d t o a minimu ma s discusse d i n a separat e memorandum .

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REFERENCE S 1 . Contro l o f Volatil e Organi c Compoun d Emission s FromReacto r Processe s an

d Distillatio n Operation s Processe s I n Th e Syntheti c Organi c Chemica l Manufacturing Industry ; Draf t CTG , EPA-450/4-91-031 , Novembe r 1991 . p . 4- 6 2 . Referenc e 1 , p . 4- 3 3 . U.S . Environmenta l Protectio n Agency . Ai r Oxidatio n Processe s i n Syntheti c Organi c Chemica l Manufacturing Industry-Background Informatio n fo r Propose d Standards . Researc hTriangl e Park , NC . Publicatio nNo . EPA-450/3-82-001a . January1982 . p . C-22 . 4 . U . S . Environmenta l Protectio n Agency . Reacto r Processe s in Syntheti c Organi c Chemica l Manufacturing Industry-Background Informatio n fo r Propose d Standards . Researc hTriangl e Park , NC . EPA-450/3-90-016a . 5 . Memorandu

m fro mBarbour , W . an

d R . Pandullo , Radian Corporation , t o Evans , L. , EPA/CPB . Reasonabl yAvailabl e Contro l Technology(RACT ) Impact s fo r th e SOCM I Reacto r Processe s an

d Distillatio n Operation s CTG . Marc h29 , 1991 . 6 . Compilatio n o f Ai r Pollutan t Emissio nFactors , Volume 1 : StationaryPoin t an d Are a Source s U . S . EPA , AP-42 . Septembe r 1985 . 7 . Referenc e 1 , p . 4-4 . 8 . Memorandu

mfro mFerrero , B. , Radia n Corporation , t o Projec t Fil e 6.1 . Estimating Liqui d t o Vapo r Flowrat e Ratio s i n Scrubbe r Columns . February5 , 1992 . 9 . Referenc e 1 , p . 5- 7 t o p . 5-8 . 10 . OAQP S Contro l Cos t Manual , EP A450/3-90-006 . January1990 . p . 3-3 1 t o 3-35 . 11 . Referenc e 1 , p . 5-13 . 12 . Memorandu

mfro mProbert , J . A. , Radia nCorporation , t o Projec t File . Annua l Electricit yCost s fo r Motor s Tha t Powe r Fan s i n a Vapo r Collectio nSystemfo r Transfe r Loading Racks . Augus t 28 , 1991 . 13 . Memorandu

mfor mFerrero , B. , Radia nCorporation , t o Projec t Fil e 6.1 . Electricit yRequiremen t fo r LowFlowStream s fo r HONProces s Vents . January22 , 1992 .

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