Tanj njun ung g Ja J ati B Tra Train inin ing g SOOTBLOWERS
OPERATIONS SOOTBLOWERS
Tanjung Jati B Training
PT Cen t r al J av a Po w er Tanju njung ng Ja J ati B Units 1 & 2
2 x 660MW 660MW (n (n et) et )
B o i l er
Pr ec i p i t at o r
FGD FGD Abso Ab sorb rber er Tanjung Jati B Training
Sootblowers The Sootblo oot blowers wers which whi ch util ut ilize ize steam steam from fr om the t he boiler boi ler are are inte int ended to remove slag and as ash h from boile boil er tube t ube surface surfaces. s. Steam team is i s ta t aken from fr om the t he Pri rimary mary Superhea Sup erheater ter II Outll et Header Out Header . From ro m the th ere, the th e pre pr ess ssur ure e is reduced reduced at the th e Sootblo oot blower wer Blowe Blo werr Reduc Reducing ing Station to t o 50 500 0 ps psii g or o r 34.5 34.5 bar barg g.
Tanjung Jati B Training
Sootblowers Slagging & Foulin g
Convection Pass Fouling Foulin g
Furnace Slagging
Tanjung Jati B Training
Sootblowers Slagging & Fouling Fouli ng FURNA CE WA L L SL SL A GGING
CONVECTION PA SS FOUL ING
Tanjung Jati B Training
Sootblowers Slagging & Fouling Fouli ng Percentage of Calcium (CaO) and Magne gn esium si um (MgO) MgO) - High amounts amounts cause cause furnace furnace ash ash to be be reflective reducing furnace heat transfer
Percentage rc entage of Sodi od i um (Na (Na2O) - High amounts amounts cause cause more more tenacio tenacious us fouling of superheat/reheat surfaces
As A s h Fus Fu s i o n Temp Tem p erat er atu ure
- Low ash fusion temperature can cause superheat slagging Tanjung Jati B Training
Sootblowers Quantity
There are are three th ree (3) type typ es of Soo ootb tblo lowers… wers… 62 - Lo Long ng retr retra act ctable able (IK) (IK) – PSHH-I, I, PSHH-2, 2, SSH & RH 8 - Exte xtende nded d Lance (IKE KEL) L) – Economi conomiz zer 36 - Short Retract (I (IR) – Furnace Walls
Tanjung Jati B Training
Sootblowers Location Thermoprobe IK Long Retract Retract Blowers
IK Long Retract Retract Blowers
IR Short Shor t Retract Wall Wall Bl owers
IKEL IKEL Short Retract Retract Bl owers
Tanjung Jati B Training
Sootblowers IR Fur urnace nace Wa Wall Bl Blow owe er
MOTOR
CONTROL BOX NOZZLE
POPPET VALVE & ACTUATING ACTUA TING ARM STEAM Tanjung Jati B Training
Sootblowers IR Fur urnace nace Wa Wall Bl Blow owe er
TYPICAL TYP ICAL INS INSTALL TALL ATION
STEAM JET
Tanjung Jati B Training
Sootblowers All i g n m en A entt
In orde or derr to t o minim mi nimize ize eros rosion ion,, alignment of the sootblowe sootblowerr asse ssembly mbly is critical due to the close proximit proxi mity y of the t he blo blowe werr nozzle nozzle to the boile boil er tube tu bes. s. All i g n m en A entt i s s et d u r i n g Construction. Construction.
Tanjung Jati B Training
Sootblowers IR Fur urnace nace Wa Wall Bl Blow owe er y
B O I L E R W A L L
INSTALLATION CHECKS
900
x
900 z
1-1/2”
Center line of nozzle is 1-1/2” 1-1/2” from from the crown crown of the wall tubes Nozzle is pointing down or up with the grain of the tubes in the blowing position Must be perpendicular to the boiler wall In all planes Check to ensure piping is supporting the blower with hangers installed properly
Sootblowers IK Blow Bl owe er
Tanjung Jati B Training
Sootblowers Typi ypica call IK Blow B lowe er
Tanjung Jati B Training
Sootblowers Typi ypica call IK Blow B lowe er
CLEANING HELIX
Tanjung Jati B Training
Sootblowers Clea leani ning ng Dynamics Dynami cs
Cavity Geometry Deposit Composi omposition tion Gas Ga s Strea Stream m Te Temp mperature erature Nozzle Nozz le Distance Dis tance Travel Spee Speed d Helix Blowing Blowin g Pressure Pressure
Tanjung Jati B Training
Sootblowers Clea leani ning ng Dynamics Dynami cs Temperatures Steam 300º- 450º F
Boile Boil er tube 1000º F As A s h Depo Dep o s i t
Molte olt en or pla pl astic sti c surfa surf ace condition condi tion Up to 24 2400º F
Tanjung Jati B Training
Sootblowers Pressu ressure re Redu duci cing ng Stati Station ons s
There are are two tw o (2) (2) Press ressur ure e Reduc educin ing g Stati Station ons, s, one for the t he Boiler S Boiler Soot ootblo blowers wers and and one o ne for the A the Aii r Heater Heat er Sootblowers. Sootblowers.
Tanjung Jati B Training
Sootblowers Steam Source TO SOOTBLOWER REDUCING STATION
STEAM DRUM
PSH-I
PSH-II
SSH HP TURBINE
TO IP TURBINE REHEATER
Tanjung Jati B Training
Sootblowers Stea team m Pressure Pressur e Re Redu duci cing ng Statio tations ns
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Sootblowers Control
Ope perating rating the th e soo sootbl tblowers owers is acco accompl mplish ishe ed throug thr ough h the DCS sys system. tem. Vari rious ous blowing blow ing sequences can be b e preprogrammed or the desir desire ed number num ber of sootb so otblow lowe ers ca c an be selecte selected d manually. manually .
Tanjung Jati B Training
Sootblowers Blowin Blo wing g Freque Frequency ncy
Determini termining ng how h ow freque frequent nt the Boile Boil er and Aii r Heat A Heater ers s w i l l r eq equ u i r e so s o o t b l o w i n g i s b as ased ed o n the fuel being fir f ire ed and and re r elate lated d Boiler Performance. Performance. A So Soo o t b l o w er er’’ s s t eam b l o w i n g p r es ess s u r e wi will be dete de termin rmine ed during commissi comm issioning oning..
Tanjung Jati B Training
Sootblowers Blowin Blo wing g Pressures Pressures
If removal of sla sl ag or foul f ouling ing (ash) is not be being ing removed remove d effecti effectively, vely, the blo blowi wing ng pressure p ressure can can increased. Incr ncre eased steam steam pressure p ressure results result s in i n hig h ighe her r ste st eam veloc velocit ities. ies. How owe ever, hi high ghe er st ste eam veloc velocit ities ies increa inc rease se the potential for tub tube e eros rosion ion..
Tanjung Jati B Training
Sootblowers Fail ilur ure e to Retr tra act
If a sootblower sootblower be become comes s stuck in the boiler boiler NEVER, NEVER clos close e the sootblowe sootblow er’s Isola solation tion Valve lve.. Ste tea am acts to “ cool” the Blower and and prote pro tect ct it i t from fro m heat heat damage. damage. A Special Retr Retra actin ct ing g Tool is provi de ded d to retract retra ct the t he blower.
