p. 1 

# OAR Box 1828 Prepped by Ollie Stewart



## Document

Number: 

# 149 ) M-K-(B)-14 8 Docket Number: 

# A-83-2 7

Printed 11/12/2008 11:12:53 AM Sheet 149 of 325P. 2 

## ENERG Y AN D ENVIRONMENTA L ANALYSIS , INC . tr- '• 1 165 5 NORT

H FOR T MYE RDRIV E ARLINGTON

, VIRGINI

A 2220 9 703/528-190 0



### Augus t 14 , 198 4 _C_ 3



### II-K-CB)-ltf 8

Mr . Rober t Shor t Economi c Analysi s Branc h U.S . Environmenta l Protectio nAgenc y Mai l Drop-1 2 ResearchTriangl e Park , N C 2771 1 Subject : EP

A Contrac t No . 68-02-3564 , Work Assignmen t #1 9 Dea r Robert : Sodiu m (NaTH ) scrubbin

g wa s selecte

d inth e fifthroun

d SO - NSP S IFCA M runs . For sensitivity analysi s purposes , tw o case s fro

m th e fifth roun d SO - NSP S analysi s hav e bee nru

ninIFCA

M wit hdua l alkal i scrubbing . Th e dua l alkal i scrubbe r capita l cost s are twic e (o r more ) th

e cos t estimate s for NaTH . Th e dua l alkal i 0§M

cos t estimate s are comparabl e t o (i.e. , fo r hig

hsulfu r coa l types ) or highe r tha nNaTH . Therefore , dua l alkal i scrubbin g i s mor e expensiv

e tha nNaTH . The attache d table s sho w tha t les s coa l i s selecte d whenscrubbin

g i s restricte

d to dua l alkal i FG

D systems . Fo r OptionCas e 7(90 ) an d ne w unit s >20 0 MMBtu/hr , th e aggregat e SO - emission s are slightl y highe r for th

e cas e withscrubbin g restricte

d to dua l alkal i scrubber s (eve nthoug hcoa l deman

d i s lower) . Whe

n scrubbin

g i s restricte

d to dua l alkal i system s inOptio

nCas e 7(90) , a hig hsulfu r coa l i s scrubbe

d inFedera l regio

n4 (Sout

hAtlantic) . Mediu m sulfur coa l type s ar e selecte d inthi s regio

nwhe nNaT H i s permitted . A

s a result , th

e average controlle d SO - emissio

nrat e for coal-fire

d boiler s i s highe r unde r th e DA/Optio

n Cas e 7(90 ) ru

ncompare

d wit hth e NaTH/Optio

nCas e 7(90 ) run . Pleas e cal l m

e i f yo u have an

y questions . Sincerely , 

### Ti mHoga n (J TH/c e Enclosure s cc : Dr . A . Weh

e

MANAGEMENT /

ECONOMIC S /

ENGINEERIN GCOMPARISONO F IFCA M PROJECTIONS 3



### 11 7 12 8 11 7 12 8 

### 0

0 0 0 1 2



### 1 1 2 

### 1 199 0 Fue l deman

d 199 0 S0 9 Annualize d 1 2 (1 0 Btu ) emission s Cost s ga s resi d coa l (IO 3 shor t tons ) (IO 6 $ 1982 ) 100-15 0 MMBtu/h r 0.C. 2 (50 ) NaTH b11 7 0 1 2 3. 8 1,010. 6 DC C 12 8 0 1 0. 3 1,008. 2 0.C. 7 (90 ) NaTH b11 7 0 1 2 1. 6 1,011. 2 DA C 12 8 0 1 0. 1 1,008. 3 150-20 0 MMBtu/h r 0.C. 2 (50 ) NaTH b8 8 0 2 3 7. 1 832. 1 DA C 11 1 0 0 0. 0 819. 2 0.C. 7 (90 ) NaTH b9 4 0 1 7 2. 3 829. 4 DA C 11 1 0 0 0. 0 819. 2

a Ne w industria l boiler s installe d betwee n 198 5 an d 1990 . Highe r oi l an d ga s prices . Fift h roun

d S0 2 NSP S analysi s results . Sodiu mscrubbin

g selected . c NaT H and lim

e spra ydrying FG

D system s no t permitted . Dua l alkal i scrubbing selected . 

### 8 8 

### 11 1 9 4 

### 11 1 

### 0

0 0 0 2 3



### 0 1 7 

### 0,

200-25 0 MMBtu/h r 0.C. 2 (50 ) NaTH b 

### DA C 0.C. 7 (90 ) NaTH b 

### DA C >25 0 MMBtu/h r 0.C. 2 (50 ) NaTH b 

### DA C 0.C. 7 (90 ) NaTH b 

### DA C

a Ne w industria l boiler s b Fift h roun

d S0 2 NSP S
c NaT H an

d lim e spra y -



### in s i anal y 

### dr y in g ga s

5 0 5 4 5 0 5 4

9 0 

### 12 5 9 0 

### 12 5 taile d COMPARISO

NOF IFCA

M PROJECTIONS 9

199 0 Fue l (IO 1 2 resi d



### 0 0 0 0

0 0 0 0 deman

d 199 0 S0 o 3tu ) _ emission s o coa l (1 0 shor t tons )

1 7 5. 2 1 3 4. 4
1 7 2. 4 1 3 2. 6

10 1 29. 5 6 6 21. 4
10 1 9. 7 6 6 10. 9 betwee n 198 5 an

d 1990 . Highe r oi l an d ga s si s results . Sodiu m FGD system s no t scrubbing selected .

permitted . Dua l alkal i scrubbing prices .
selected . Annualize d

Cost s (IO 6 $ 1982 )

500. 4 501. 3 501. 1 501. 6

1,411. 1 1,401. 8 1,415. 0 1,403. 4 *

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