Air Flue Gas
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Transcript of Air Flue Gas
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7/24/2019 Air Flue Gas
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1
TROMBAY
PRESENTATION
ON
V. A. JOSHI
VIREN JOSHI
BOILER WATER AND STEAM
SYSTEM
&
AIR AND FLUE GAS SYSTEM
TATA POWER
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In This Presentation We Will Learn About
Boiler Water And Steam Circuit
Drum Level Control In Unit 5-
Air And !lue "as S#stem
!an Startin$ se%uence& 'S And () Tem* Control
TROMBAYTATA POWER
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TROMBAYTATA POWER
Boiler Water And Steam
Circuit
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PANEL SH PLTN SH RH
FINAL
SH
LOW TEMP
SH
ECO
DRUM
CRH HRH MS
FROM
HPH - 6
SGWCP
WATER WALL HEADER
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TROMBAYTATA POWER
Drum Level Protections
Drum Level Lo+ , Lo+-Lo+
Drum Level )i
S+ellin$ In Drum
Shrinin$ In Drum
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TROMBAYTATA POWER
Drum Internals .mer$enc# Blo+ Do+n
I/ drum level $oes hi this +ill o*en on autoto maintain drum level&
Continuous Blo+ Do+n
Used /or maintainin$ chemical *arameters in
boiler +ater&
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TROMBAYTATA POWER
Drum Level Control
Drum Level Control is 0 .lement Control
Unit 5 drum level is controlled b# STB!P1ss*eed and 'B!P 233 4 65 4 disch& valve&
Unit drum level is controlled b# STB!P1s
s*eed and 'B!P scoo* tube or h#drauliccou*lin$&
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TROMBAYTATA POWER
Air And Flue Gas System
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TROMBAYTATA POWER
Stotiometric Air .7cess Air
Air is re%uired /or combustion *rocess +hich
is su**lied b# 6 8o& o/ !D !ans&
!lue $ases $enerated b# combustion *rocess
are removed b# 9 8o& o/ ID /ans&
.7cess air is maintain /or com*lete
combustion&
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ID FANA B C D
A FDFAN
B A !BA !A
G" !AG" !B
#S
RAPH-5A RAPH-5B
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AIR FROM ATMOS
FD A
AIR FROM ATMOS
R
A
PH
B
FD B
R
AP
H
A
FROM GRF - B
FROM GRF - A
IGNITOR AIR
FAN
$ FURNACE
SECONDARY AIR CIRCUIT
35 DEG C
35 deg
350 DEG
-10 mm
S
C
A
P
H
B
S
C
A
P
H
A
SD% &
SD
'.1
'.&
SD(.1
(.&
SD%1
SD%!
SD%)
SD
1*.1
1*.&
350 DEG
SD
+.1
+.&
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!lue $as s#stem
"
A
H
A
"
A
H
B
! A
! B
! C
! D
#SGD% GD%
,.1
,.&
GD%'GD
11A
11B
GD%1! GD%&,
GD%
GD%1(
GD%
-.1
-.& GD%1*
GD
1-A
1-B GD%1+GD%&)
GD%&&
1&A
1&B
1,A
1,B
GD &(.1 &(.&
GD ,*.1 ,*.&
GD ,1.1 ,1.&
1)
1'
&*&-
&1
&!
GD !.1 !.&
+
(
ID A
ID B
ID C
ID D
Sta!
GD
&'.1
&'.&
GD
&+.1
&+.&
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A !BA !A
RAPH-5A RAPH-5B
Primar# Air S#stem
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TROMBAYTATA POWER
!an Startin$ Se%uence
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TROMBAYTATA POWER
!A8 STA(TI8" S.:U.8C.ID !A8
!D !A868DID !A8
68D!D !A8
0(DID !A8
9T)ID !A8
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TROMBAYTATA POWER
Permissive /or Startin$ !an & ;< Breaer raced in&
Breaer in remote not on local& !an Lub oil , control oil *r& o
ACW /lo+ throu$h L= cooler not lo+&
L= tan Level not lo+&
An# bearin$ tem*& not hi
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TROMBAYTATA POWER
Clear Path Lo$ic satis/ied&
=utlet Dam*er close
Inlet Dam*er =*en
I"< , Blade *itch in minimum *osition&
Permissive /or Startin$ !an
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TROMBAYTATA POWER
2ST
ID !A8 STA(TI8"What is So S*ecial >
.Close outlet dam*er o/ ID /an /rom C"A 36*anel ee* other ID /an1s outlet dam*er o*en
.=*en blade *itch o/ one o/ the !D /an 5 to 23
4
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TROMBAYTATA POWER
!urnace Dra/t Control
In unit 5 /urnace dra/t is controlled b# inlet
$uide vane& In unit /urnace dra/t is controlled b# s*eed o/
the ID /ans throu$h
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TROMBAYTATA POWER
Unit Ca*abilit#
Ca*abilit# means the ma7imum $eneration
*ossible +ith runnin$ au7iliaries& Loss o/ one ID /an +ill run do+n the load b#
00 4&
Loss o/ one !D /an +ill run do+n the load to@53 4653 'W&
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TROMBAYTATA POWER
Wind Bo7C !A
C !B
C !C
C !D
C !#
C !F
C !G
C !H
AB
CD
#F
GH
Scanners I/nitors
AB
CD
#F
GH
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TROMBAYTATA POWER
'S () Tem*&Control
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TROMBAYTATA POWER
Tem*& Controlled b# Burner Tilt
Use o/ S) and () s*ra#s&
"( /ans
=*eratin$ di//erent elevations
.7cess air
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TROMBAYTATA POWER
T)A8; =U