FGD Overview

8/19/2019 FGD Overview

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Purpose of FGDurning of fuels like Coal & oil produces a colourlesas - Sulphur Di-Oxide.

o2 is ver har!ful "o "he environ!en" & #e kno# "ha" causes $cid %ain har!ful "o plan"s & environ!en".

e!ploing FGD uni"s' S(2 e!issions are cu" do#nhus #e #ill s"rive closer "o a clean environ!en".

his is achieved in "he FGD Sea#a"er *a"er )rea"!en"

lan"S*)P #here "he oxida"ion is carried ou"


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)PS OF FGD/.D% )P

2.*) )P

* *011 D0SCSS %G$%D03G *) )P FGDSS)4.


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Purpose of FGD )he SO2 a5sor5ed in "he sea#a"er is oxidi6ed

"o har!less sulpha"e prior "o discharge "osea.

)his is achieved in "he FGD Sea#a"er *a"er )rea"!en" Plan" + S*)P, #here "he oxida"ionis carried ou" 5 5lo#ing air in"o "he sea#a"er


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!ission Guaran"eesSo2 %e!oval - 7 89:

)o"al $ir ;o# - (("?h,

Ph - 7 >.<

DO Dissolved Oxgen - 7 >( : @ 2(- 2< Deg C

S"ack 0nle" Gas )e!p - 7 A( Deg C

Sea *a"er )e!pera"ure rise - Deg C

Po#er Consu!p"ion - 2. 4* + uni"s,


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)he Process

Dus"

%e!oval

So2

$5sorp"ion %ehea"

Sea *a"er )rea"!en" Plan"

)rea"ed Sea

$irSea*a"er

Sea*a"er

)rea"ed

GasFlue Gas


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FGD Ss"e! Co!prises

Gas Circui"Boos"er fanGG$5sor5erChi!ne

*a"er Circui"Feed *a"er For#arding +FFP, Pu!p ouse$era"ion Pond

Sea#a"er )rea"!en" Plan"Che!ical Do6ing +3aO,

$era"ion Fans


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%eac"ion

$5sorp"ionSO2 E 2O SO2- E 2E

So2 is a5sor5ed in sea #a"er


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%eac"ion

Oxida"ionSO 2- E /?2O2 SO

2-

+Sulpha"e ions,

SO 2- Consu!es oxgen "ofor! sulpha"e

Sea *a"er is fur"her oxgena"ed

"o co!ple"e "he oxida"ion


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Gas Circui"

138 Deg C

78Deg C


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S e a * a " e r 0 n

S e a * a " e r

O u "

) o C h i ! n e FGD 0nle"

Da!per

FGD BpassDa!per

Ou"le" Da!per


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Boos"er Fan )pe of Fan - $xial Flo#

Blade )pe - Haria5le Pi"ch Blade

%a"ed Capaci" - 2$!p.

%a"ed Po#er of 4o"or - /9(( I#


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GGGas to Gas Heater

$s "he na!e i!plies i" "akes hea" fro! "he ho"

;ue gas and rehea" "he clean ;ue gas co!ing

ou" of "he a5sor5er le" i" "o "he chi!ne


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GG )pe - Bi-Sec"or

ea"ing Surface area - 8>(( sJ.!

Speed of ro"a"ion - /.< rp!

Drive - 4o"or Driven

SOO) B1O*% - 3OS +2 pper?2 lo#er,


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$5sor5er$5sor5er is a concre"e s"ruc"ure #hich houses

"he sea #a"er dis"ri5u"ion pipes & Kll packs

0" ac"s like a cooling "o#er

Flue gas "o Sea#a"er in"erac"ion "akes place

$nd So2 is a5sor5ed fro! ;ue gas 5 sea#a"er and clean gas leaves "o GG


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$5sor5er

F * " P


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Fee *a"er Pu!p ouse+FFP,

0" "akes #a"er fro! sea #a"er reservoir

Pu!ps "he #a"er "o $5sor5er.

$f"er reac"ing #i"h Sox #a"er is sen" "o

aera"ion 5asin for dilu"ing "he eLuen" #a"er.


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FFPCapaci" - 8(( cu!?hr

ead - 8.< !

Speed - A( rp!

4o"or Capaci" -


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$era"ion Fans - Func"ion )akes air fro! a"!osphere

Pressurises and send "he air "o dis"ri5u"ionpipes #hich are su5!erged 5 "he eLuen"#a"er fro! a5sor5er.

)here5 Dissolved oxgen is increased in "he#a"er discharged "o ou"fall channel.


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$era"ion Fans - Spec )pe - %adial Flo# Fan

Flo# -


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Che!ical Do6ing Ss"e!

)o dose "he Caus"ic in "he sea #a"er af"er Sox

a5sorp"ion.

0" 5oos"s "he p value of sea #a"er.


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FGD-S)$%) P


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FGD-S) DO*3 )he Shu" do#n of FGD is done in "#o s"ages.

S"age /= S"op FGD fro! gas side

S"op "he FGD Boos"er Fan

Close "he inle" da!pers ' "hen

Close "he FGD ou"le" da!per

S"age 2= S"op FGD fro! Sea#a"er side

S"op a5sor5er pu!p.

S"op "he aera"ion fans.


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FGD )%0PP03G CO3D0)0O3S/, $5sor5er #a"er ;o# +4agne"ic F 4,M

/


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Si!ple & relia5le

Proven )echnolog

ses onl sea #a"er & air

3o 5-produc" handling

Full au"o!a"ed opera"ion

4ee"ing e!ission s"andards

BeneK"s? Fea"ures of

S*FGD


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F1 G$S SS)4


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Sea #a"er suppl


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$5sor5er ss"e!


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G$S )O G$S $) C$3G


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Sea #a"er "rea"!en"+aeara"ion,


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Da!per Seal $ir Ss"e!


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)hank ou

Documents

FGD Overview