air flue gas

7/24/2019 Air Flue Gas

1/24

1

TROMBAY

PRESENTATION

ON

V. A. JOSHI

VIREN JOSHI

BOILER WATER AND STEAM

SYSTEM

&

AIR AND FLUE GAS SYSTEM

TATA POWER


2/24

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


3/24

TROMBAYTATA POWER

Boiler Water And Steam

Circuit


4/24

PANEL SH PLTN SH RH

FINAL

SH

LOW TEMP

SH

ECO

DRUM

CRH HRH MS

FROM

HPH - 6

SGWCP

WATER WALL HEADER


5/24

TROMBAYTATA POWER

Drum Level Protections

Drum Level Lo+ , Lo+-Lo+

Drum Level )i

S+ellin$ In Drum

Shrinin$ In Drum


6/24

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&


7/24

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

+.&


12/24

!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

&+.&


13/24

A !BA !A

RAPH-5A RAPH-5B

Primar# Air S#stem


14/24

TROMBAYTATA POWER

!an Startin$ Se%uence


15/24

TROMBAYTATA POWER

!A8 STA(TI8" S.:U.8C.ID !A8

!D !A868DID !A8

68D!D !A8

0(DID !A8

9T)ID !A8


16/24

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


17/24

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


18/24

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


19/24

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


20/24

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&


21/24

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


22/24

TROMBAYTATA POWER

'S () Tem*&Control


23/24

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

air flue gas

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