Deaerator in a thermal power plant
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Transcript of Deaerator in a thermal power plant
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BASICS OF DEAERATOR&
CONSTRUCTIONAL DETAILS
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Purpose is Deareator
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DEAERATOR
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DESIGN CONCEPT OF DEAEARATOR
7PPB
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CEP
Main ejectorGSC
Drain
cooler
LPH3
LP heater1LPH-2
FST
BFP
D/A
Boiler
-0.9Ksc
LPT
HPH6
HPH5
FRS
HPT IPT
Feed ater line
conden!ate
20ksc
51De
5!." De
#$."
11#.9D5%!t&'r
1$! D
$.5ksc
1#0ksc&1$#.%D
1%!ksc&5%0D
1$%ksc&"%0 D
199.9D
2%1.2D
Location of
deaerator
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Principe of Deaeration
!enr"s a#$ gas solubility in a solutiondecreases as the gas partial pressureabove the solution decreases .
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Principe of Deaeration$
Sou%iit" La#$ Solubility of gasesdecreases with increase in solutiontemperature .
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TEMPERATURE EFFECT
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Why / What of Regerative Heaters?
! a si"#$e Ra!%i!e &y&$e' heat is a((e( tothe &y&$e at re()&e( average te"#erat)re *
To i!&rease the average te"#erat)re of
heat a((itio! e+tra&ti!g strea" fro" thet)r,i!e is )se( to heat the fee( -ater* This
#ro&ess is &a$$e( rege!eratio! *
The heat e+&ha!ger -here heat istra!sferre( fro" stea" to fee( -ater is
&a$$e( a rege!erator' or a fee( -ater
heater*
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Rege!erative Ra!%i!e Cy&$e
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Ty#e of Heater
There are a&t)a$$y t-o "ai! ty#es of fee(
-ater heaters*
f the stea" "i+es -ith the -ater' it is a!
o#e!fee( -ater heater*
f the stea" (oes !ot "i+ -ith the -ater '
it is a &$ose( fee( -ater heater*
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O#e! heater
A! o#e! fee( -ater heater is ,asi&a$$y a"i+i!g &ha",er' -here the stea" e+tra&te(
fro" the t)r,i!e "i+es -ith the -ater e+iti!g
the #)"#* ! a! i(ea$ &o!(itio!' the -ater i!the heater is a sat)rate( $i.)i( at the heater
#ress)re gases re"ove( o)t thro)gh ve!t*
DEAERATOR is a! o#e! heater* The "i+t)re #)"#e( ,y BFP a!( se!( to
,oi$er E&o!o"iser*
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0ove",er 12' 1345PM Revisio! 33 42
O#e! 6Dire&t Co!ta&t Fee( Water Heater
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Ty#e of (eaerator
Tray ty#e (eaerator
8#ray ty#e (eaerator
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The fee( -ater is s#raye( i! thi! fi$"s i!to a stea" at"os#here
a$$o-i!g it to ,e&o"e .)i&%$y heate( to sat)ratio!* 8#rayi!g fee(
-ater i! thi! fi$"s i!&reases the s)rfa&e area of the $i.)i( i!&o!ta&t -ith the stea"' -hi&h' i! t)r!' #rovi(es "ore ra#i( o+yge!
re"ova$ a!( $o-er gas &o!&e!tratio!s* This #ro&ess re()&es the
so$),i$ity of a$$ (isso$ve( gases a!( re"oves it fro" the fee(
-ater* The $i,erate( gases are the! ve!te( fro" the (eaerator
Deaeration process
CO0DE08ATE
Tra" t"pe Deaerator
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TRA TPE DEAERATOR
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Spra" t"pe Deaerator
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8te# te"
4 8#ray9(evi&e
1 8tea"
Chargi!g
Devi&e 68CD: ;esse$
F)!&tio!Partia$ (eaeratio!
Coo$i!g stea" to sat)ratio! te"#*
8tea" (istri,)tio!
Fee(-ater storage 6!o heati!g )# Re$ief of !o!9&o!(e!sa,$e gases Fi!a$i
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Deaerator o)t #)t
LOSS
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DEARATOR
F( STORAGE TAN)
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D t fi ti
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Deaerator configuration
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DEAERATOR
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Deaerator No**e
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PEGGING STEA+ PIPE LINE
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FWST CAPACITY
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Materia$ se$e&tio!;esse$
8tea"
&hargi!g
(evi&e
F$o- ,aff$es
8#ray ,aff$e
8#rayer
Car,o! stee$
Car,o! stee$ 6#ri!&i#a$
8tai!$ess stee$
6erosio!' high -ater &o!te!t
Car,o! stee$
Car,o! stee$
8tai!$ess stee$
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D/A =;=
C=R C;
CEP R/C
C;
H/W =;=
CR=
!,( & D,A LE-EL CONTROL
DEAERATOR SPECIFICATIONS
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DEAERATOR SPECIFICATIONS
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TRA -S SPRAP DEAERATOR
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DEAERATOR TROUBLE S!OOTING
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DEAERATOR TROUBLE S!OOTING
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DEA
ERATO
R+ODIFICATION
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