This document discusses soot blowers and the soot blowing process at the Sasan Ultra Mega Power Plant. It describes the types of soot deposits that form in boilers and the effects of deposition. It outlines the types of soot blowers used at Sasan UMPP, including wall blowers, long retractable soot blowers, and air heater blowers. The locations of the different soot blowers throughout the boiler are provided. Finally, the standard procedure for soot blowing the boilers is summarized in 6 steps.

1. SOOT BLOWERS
PRESENTED BY:-
SHANKU BANERJEE

2. Brief
 Working Experience / Responsibilities taken: Worked in BOILER ( 1 WEEK) AND
BOP AREA.
 Learning: Operational skills and managing skills
 Training Attended : Safety training ,Fire Fighting
 Overall Observations: Understanding own responsibility while working as a team,
ensures smooth functioning of system

3. SOOT DEPOSIT
• Whenever fossil fuels are burnt
they leave combustion residue
broadly known as ash. As the flue
gas moves over the heat transfer
are of the boiler furnace,it brings
along with it a major portion of
this ash. As the gas moves over the
heat transfer areas of the boiler,
the ash deposits on the heating
surfaces. This is known as soot
deposit

4. TYPES OF DEPOSIT
The soot deposits are broadly classified as
•Fused slag deposits (furnace walls)
•High Temperature bonded deposit(convective
super heaters and re-heaters.
•Low Temperature deposits.( economiser & air
heaters)

5. EFFECT OF SOOT DEPOSITS
•As the deposits are poor conductor of heat, there will be
reduction in heat transfer ultimately resulting in increase of the
flue gas temperature leaving the boiler and hence reducing
boiler efficiency
•Deposit accumulation block flue gas path thereby increasing
draught losses and so high ID fan power.
•Accumulation of deposit on tubes may fall of sections due to
increased weight
•The deposits bonded to the tubes also lead to corrosion.

6. Type of soot blowers used in
SASAN UMPP 6 X 660 MW
Types of soot blowers:
•Wall Blowers also known as IRs (Insertable
Rotating)
•Long Retractable Soot Blower (LRSB) or IK
(Insertable Kinetic)
•Air Heater Blower.

7. Wall soot blowers( Insertable
Rotating)
Wall Blower is a soot blower suitable for the cleaning of wall heating surfaces with
heavy slagging and high flue gas temperatures up to 1600 °C.

8. LONG RETRACTABLE SOOT BLOWER
( Insertable Kinetic & IKEL)
Long retractable soot blowers
such as the ones shown here are
found throughout boiler super
heater and re-heater sections.
• Helical soot blower

9. Air Heater Blower(IKAH)

12. Soot Blower System Locations
•Main power supply – Boiler Aux Room
•Local power supply – Boiler 17mtr
•IR(6 blowers each side)
• 1st layer- 21 mtr
• 2nd layer- 41.4mtr
• 3rd layer- 43mtr
• 4th layer- 47mtr
• 1 to 28 – in first pass
•29 to 44 – in second pass

13. IK
Left Side mtr Right Side
3,41,43 57mtr 4,42,44
1,11,33,35,37,39 60mtr 2,12 34,36,38,40
9,17,23,29,31 63mtr 10,13,24,30,32
7,15,21,27 67mtr 8,16,22,28
5,13,19,25 72mtr 6,14,20,26
IKEL
13,15,17,19 47mtr 14,16,18,20
5,7,9,11 50mtr 6,8,10,12
1,3 53mtr 24

14. •APH SOOT BLOWER- 4 No 2 left side (12m,17m)
2 right side.
• Steam for soot blowing taken from platent super heater
O/L.
• 4 Branch MIV - 2 MIV 71mtr(L&R) IK,IKEL
• 50mtr(L&R) IR

15. Boiler soot blowing procedure:-
1. Open the isolation valve of soot blowing steam line.
2. Open drain valve of this line to drain out condensate if any.
Allow steam to flow for some time through this valve to increase
temperature of this line
3. Put the control valve of the line in auto to get 12 to 14kg/cm2
pressure.
4. Check all retractable blower are in withdraw position
5. Increased the draft a little higher
6. Start the sequence. Blowing will be started one by one .In case
of manual system start blowing one by one in the direction of
flue gas flow.
7. After completion of blowing sequence bring back the draft to
normal and close the steam isolation valve .