Electrostatic Precipitator
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Thursday, June 21, 2012
ELECTROSTATIC PRECIPITATOR CONTENTS INTRODUCTION PRECIPITATOR COMPONENTS ARRANGEMENTS BASIC PRINCIPLE TECHNICAL SPECIFICATION ERECTION SEQUENCE
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR INTRODUCTION We are Setting up 2x600 MW Coal Based Thermal Power Plant at Mahan Bandhaura Site. Electrostatic Precipitator is playing a vital role in most of the industries, such as 1) Thermal Power Plant 2) Cement Plant 3) Chemicals industries 4) Steel Plant 5) Paper Industries & etc
An electrostatic precipitator is a large, industrial emission-control unit. It is designed to trap and remove dust particles from the exhaust gas stream of an industrial process. In large power plants may actually have multiple no. of fields for each unit. In our plant, there are 9 no. of fields per unit. Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR MAJOR COMPONENTS OF ESP: 1) Rectifier Transformer 2) Discharge Electrodes 3) Collecting Electrodes 4) Gas Distribution Systems 5) Rapping system 6) Hopper. About Rectifier Transformer: The power supply system is designed to provide high voltage to the field to increase the collection efficiency at the highest possible level The power supply system has four basic components: 1) Step-up transformer 2) High-voltage rectifier 3) Sensing device 4) Automatic voltage control Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR DESCRIPTION ABOUT THE POWER SUPPLY SYSTEM The voltage must be controlled to avoid causing sustained arcing or sparking between the electrodes and the collecting plates Automatic voltage control varies the power to the transformer-rectifier in response to signals received from sensors in the precipitator and the transformer-rectifier itself. AVR monitors protects the internal components from arc-over damages, and protects the transformer-rectifier and other components in the primary circuit. Automatic voltage control would produce the maximum collecting efficiency by holding the operating voltage of the precipitator at a level just below the spark-over voltage.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Spark reaction When the voltage applied to the field is too high, then spark over will occur.
A voltage controller will monitor the primary and secondary voltage and current of the circuit, and detect a spark over condition.
Once detected, the power applied to the field will be immediately cut off or reduced, which will stop the spark.
After a short amount of time the power will be ramped back up, and the process will start over.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Tripping When a condition occurs that the voltage controller cannot control, often times the voltage controller will trip. A trip means the voltage controller (by way of the contactor) will shut off the individual precipitator power circuit.
A short inside the electrostatic precipitator field caused by a fallen discharge electrode (wire), or a shorted out Silicone Controlled Rectifier are examples of conditions that a voltage controller cannot control.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR About Discharge Electrodes: Discharge electrodes emit charging current and provide voltage that generates an electrical field between the discharge electrodes and the collecting plates. The particles then precipitate onto the collecting plates. Common types of discharge electrodes include: 1) Straight round wires 5) Rigid frames 2) Rigid spiked pipes 6) Spiral wires 3) Twisted wire pairs 7) Barbed discharge wires 4) Rigid masts
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Rigid Electrode
Thursday, June 21, 2012
Spiral Electrode
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR About Collecting Electrodes: Collecting plates are designed to receive and retain the precipitated particles until they are intentionally removed into the hopper. Collecting plates are also part of the electrical power circuit of the precipitator.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR About Gas distribution system: Gas velocity distribution can be most effectively influenced by the use of gas distribution devices. Ideally, uniformity is desired in: 1. Gas velocity 2. Gas temperature 3. Dust loading Gas distribution devices consist of turning vanes in the inlet ductwork and perforated gas distribution plates and in the outlet fields of the precipitator, flat distribution plate is used.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR INLET GD SCREEN
Thursday, June 21, 2012
OUTLET GD SCREEN
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Rapping System: To improve collection efficiency and ensure proper functional use of the precipitator, a rapping system is applied to the collection and emitting electrodes to dislodge the collected dust layer. 1) Collecting Rapping System: Collecting plate rapping must remove the bulk of the precipitated dust. The collecting plates are supported directly with hooks from the precipitator casing. The impact of the rapping system is directed into the Shock bar located at the leading and/or trailing edge of the collecting plates.
The first electrical field generally collects about 60-80% of the inlet dust load. So the first field plates should be rapped often for the every cycle.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Collecting Rapping System COLLECTING FRAME
COLLECTING PLATE
SHOCK BAR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Rapping cycle for the each field as follows:Field No.
Stage Efficiency %
Rapping frequency, Raps/hr
1
80%
6/Hr
2
15%
4/Hr
3
3%
2/Hr
4
1.2%
1/Hr
5
0.55%
1/2Hr
6
0.11%
1/4Hr
7
0.032%
1/8Hr
8
0.007%
1/day
9
0.001%
1/2day
1) All the above data are estimated value, especial the rapping mechanism. It should be adjusted iterative according to actual working condition. 2) Each rapping time is 1.5 mins Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR 2) Emitting Rapping System In general, discharge electrodes should be kept as free as possible of accumulated particulate. The rapping system for the discharge electrodes should be operated on a continuous schedule with repeat times in the 2 - 4 minute range, depending on the size and inlet particulate loading of the precipitator.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR 3) Rapping System for Distribution Screen The gas distribution plates should also be kept free of excessive particulate buildup and may require rapping on a continuous base with a cycle time in the 10-20 minute range, depending on the inlet particulate loading of the precipitator and the nature of the particulate. Gas distribution plates in the outlet of the precipitator may be rapped less often (every 30 - 60 minutes).
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR 4) Bottom Hopper Precipitator hoppers are designed to completely discharge dust load on demand. Typically, precipitator hoppers are rectangular in cross-section with sides of at least 60-degree slope. These hoppers are insulated from the neck above the discharge flange with the insulation covering the entire hopper area. In addition, baffles are provided in the hopper to avoid the seepage.
5650mm
8400mm
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Hopper
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
Thursday, June 21, 2012 3
4
5
6
7
8
9
4
5
6
7
8
9
2
2
2 x 600 MW Mahan Thermal Power Project 9
8
9
X to Y – 7th FIELD Y to V – 8th FIELD
7
8
V to W – 9th FIELD
U to X – 6th FIELD
T to U – 5th FIELD
S to T – 4th FIELD
R to S – 3nd FIELD
Q to R – 2nd FIELD
P to Q - 1st FIELD
6
5
4
3
2
1
Emitting electrodes - RSB Wire
7
6
5
4
3
2
1
ARRANGEMENTS: ESP 1 PASS
3
1
12.7m/s
1
ESP 1ST PASS
ELECTROSTATIC PRECIPITATOR Emitting electrodes - Spiral Wire
12.4m/s
ELECTROSTATIC PRECIPITATOR COLLECTING & EMITTING PLATE ARRANGEMENT FOR 1ST TO 6TH FIELD. Emitting plate – 4 layers Collecting plate
EACH HEIGHT OF THE COLLECTING PLATE
15 M
EACH HEIGHT OF THE RSB WIRE
3.581 M
DETAILS OF COLLECTING ELECTRODE NO. OF COLLECTING ELECTRODE IN HALF FIELD (8*43)
344 No's
NO. OF COLLECTING ELECTRODE IN ONE FIELD
688 No's
NO. OF COLLECTING ELECTRODE IN SINGLE PASS (688*9)
6192 No's
NO. OF COLLECTING ELECTRODE IN TWO PASS (6192*2)
12384 No's
200mm 200mm 400mm
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR COLLECTING & EMITTING PLATE ARRANGEMENT FOR 1ST TO 6TH FIELD.
DETAILS OF EMITTING ELECTRODES (RSB WIRE) NO. OF RSB WIRE BETWEEN TWO COLLECTING ELECTRODE
No's
4
NO. OF RSB WIRE IN HALF FIELD
No's
1344
NO. OF RSB WIRE IN ONE FIELD
No's
2688
NO. OF RSB WIRE IN SINGLE PASS FROM 1st TO 6th FIELD(2688*6)
No's
16128
NO. OF RSB WIRE IN TWO PASS FROM 1st TO 6th FIELD(16128*2)
No's
32256
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR COLLECTING & EMITTING PLATE ARRANGEMENT FOR 7TH TO 9TH FIELD
Emitting plate – 4 layers Collecting plate DETAILS OF EMITTING ELECTRODES (SPIRAL WIRE)
NO. OF SPIRAL BETWEEN TWO COLLECTING ELECTRODE
No's
8
NO. OF SPIRAL WIRE IN HALF FIELD
No's
2688
NO. OF SPIRAL WIRE IN ONE FIELD (2688*2)
No's
5376
NO. OF SPIRAL WIRE IN SINGLE PASS FROM 7th TO 9th FIELD(5376*3)
No's
16128
NO. OF SPIRAL WIRE IN TWO PASS FROM 7th TO 9th FIELD
No's
32256
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR •
COLLECTING PLATE SUPPORTED ARRANGEMENT
Collecting Plate
Emitting Plate
Guide Bar Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
COLLECTING FRAME
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Collecting System COLLECTING FRAME
COLLECTING PLATE
SHAFT RAPPER
SHOCK BAR
Thursday, June 21, 2012
AVIL PLATE
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Emitting System Support:
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR •
Emitting System Support:
TEMPORARY HANGER BOLT
HANGER BOLT SUPPORT INSULATOR
CHANNEL WITH INNER ROOF
BEAM
BEAM
VERTICAL BOX
HORIZONTAL EMITTING FRAME
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
SUPPORT INSULATOR AT FOUR CORNERS
SUPPORT INSULATOR AT FOUR CORNERS
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR VERTICAL VIEW OF EMITTING SYSTEM SUPPORTTED VERTICAL BOX
HORIZONTAL EMITTING FRAME
EMITTING ELECTRODE (RSB
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR •
EMITTING FRAME FOR 1ST to 6TH FIELD: Emitting Frame TOP VIEW OF EMITTING FRAME
Emitting Frame
RSB Electrode
Collecting Electrode
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
VERTICAL BOX
INNER WALK WAY
EMITTING FRAME
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR EMITTING FRAME FOR 7TH TO 9TH FIELD:
Emitting Frame
Spiral Electrode
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
Collecting Electrode
ELECTROSTATIC PRECIPITATOR
HORIZONTAL EMITTING FRAME
VERTICAL BOX
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR • HV inlet:
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR BASIC PRINCIPLES: Electrostatic precipitation removes particles from the exhaust gas stream by Six activities typically and they are 1) Ionization 2) Migration/Drift Velocity 3) Precipitation. 4) Charge Dissipation
5) Particle Dislodging 6) Particle Removal
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR 1.Electron emission
1
2.Dust particle charging/ corona formation
Dust layer
2 3.Migration
Collecting electrode, grounded
3
5.Rapping
5 Discharge electrode with Negative high tension volatge (72 KV)
Thursday, June 21, 2012
4 4. Precipitation
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Working Principle: The high voltage supply (72 KV) is applied to the Field, the discharge electrode emits the negatively charged ions. Particles suspended in a gas enter the precipitator and pass through ionized zones around the high voltage discharge electrodes, the particles are get ionized with negative and positive charged ions. This is called as Corona Formation
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR The negatively charged gas field around each electrode charges the particles causing them to migrate to the electrodes of opposite polarity, i.e. the collecting electrodes.
The charged particles gather on the grounded collecting plates. Rappers dislodge the gathered particulate, which falls into the collection hoppers for removal.
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
ESP TERMINOLOGY
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR TECHNICAL SPECIFICATION: [General Information about ESP] S. No
Description
Data
1
Manufacturer
SUNYARD
2
Type and No.
2SY504-9
3
Overall dimensions (L X W X H)
4
Number of ESP / Steam generator
2/1
5
Number of gas stream / ESP
2/1
6
Number of electrical fields in series in gas path / stream
9/1
7
Total active treatment length per stream (in m)
36
8
Treatment time (In sec)
9
Corona power per ESP stream (watts per 1000 m3 per min) No. of hours ESP can run at specified gas flow and dust loading without emptying any hopper (hrs)
10 11
Total power input to the ESP per steam Generator
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
73.93×53.15×33.7（m）
40.9 49 2 4400 KW
ELECTROSTATIC PRECIPITATOR FLUE GAS: S. NO
1 2 3 4 5
DESCRIPTION
UOM
FLUE GAS Flue gas amount at inlet of E.S.P
m3/hr
Flue gas temperature at inlet of E.S.P
1604198
1696002
136
135
1.34
1.333
g / Nm3
63.573
74.931
mg / Nm3
50mg/Nm3
50mg/Nm3
oC
Excess air coefficient at inlet of E.S.P Dust concentration of flue gas at inlet of E.S.P Dust concentration at the ESP outlet
Thursday, June 21, 2012
DESIGN COAL WORST COAL
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR COLLECTING ELECTRODE SPECIFICATION
S. No
Description
Data
1
Type
480C
2
Material
SPCC
3
Electrode thickness (mm)
1.5
4
Clear distance between collecting electrode plates(mm )
400
5
Active length per electrode (in m)
0.48
6
Cross sectional area of each passage (in m2)
7
Active height per electrode(in m )
8
Specific collection plate area (m2/m3/sec)
9
Total number of electrodes per SG
10
Aspect ratio length / height
2.24
11
Average gas velocity in the electrical field(m/s )
0.88
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
504×2 15 204.1 2×6192
ELECTROSTATIC PRECIPITATOR DISCHARGE ELECTRODE SPECIFICATION S. No
Description
Data I to VI field RSB,ⅤI to IX field spiral wire. I to VI field SPCC,ⅤI to IX field stainless steel.
1
Type
2
Material
3
Total number of electrodes / SG (RSB Wire)
2 X 16128
4
Total number of electrodes / SG (Spiral Wire)
2 X 16128
5
Electrode dimension height (m)
3.581
6
Effective length of electrode(m)
15
High Voltage Conductor 7
Manufacturer
8
Type
taper
9
Size
Φ150x400（mm）
Thursday, June 21, 2012
SUNYARD
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR BUS SECTION SPECIFICATION
S. No
Description
Data
1
Total numbers
36
2
Number of bus sections in parallel in gas path
4
3
Number of sections in parallel in gas path
2
4
HT Voltage [kV (peak)]
72
5
Total power on HT electrode(kW)
6
Number of sections lost if one transformer is out of service
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
4400KW 1/2
ELECTROSTATIC PRECIPITATOR COLLECTING RAPPER SPECIFICATION
S. No
Description
Data Side driven, flexible arm rapper.
1
Type
2
Total no. of rapper drive
3
4
Total number of rappers per SG Maximum number of electrodes rapped by a rapper at any one time
5
Percentage of plates rapped at one time ( % )
50
6
Rapping acceleration force minimum / plate(g )
150
7
Average input rapping power to rapping system (kW )
8
Rapper controller type
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
2 x 18 no’s 2 x 774 No’s
8
13.32 electronic program
ELECTROSTATIC PRECIPITATOR DISCHARGE RAPPER SPECIFICATION S. No
Description
Data Top driven, flexible arm rapper.
1
Type
2
Total no. of rapper drive
2 x 18 No’s
3
Total number of rappers
1476
4
Percentage of electrodes rapped at any time ( % )
50
5
Rapping energy of each rapper ( kgs.)
50
6
Average input power to rapping system ( kW )
7
Rapper controller type
Thursday, June 21, 2012
13.32 electronic program
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR TRANSFORMER RECTIFIER UNIT
S. No 1
Description Total numbers
Data 36
Transformer 2
Type of transformer
3
Class of insulation
4
Temperature rise of oil over ambient ( 0C )
5
Class of bushing
6
Rating of each set
oil immersed F ±50 35KV
Input power kVA
206 kVA
7
Output power kW
120 kW
8
Output Voltage KV
72 KV
9
Output current mA
Thursday, June 21, 2012
2000 mA 2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR S. No 10
Description Volume of oil (Liters )
Data 900 Liters
Rectifier
11
Type
12
Half-wave / full wave
13
Guaranteed life ( hours )
Bridge type full wave 80000 hours
Rating-each Rectifier unit 14
Number offered
36 sets
15
Type of cabinet
MNS
16
Voltage for controller
17
Arc suppression
18
Protection
19
Instrumentation provided as required
Thursday, June 21, 2012
AC 110V 2500V
2 x 600 MW Mahan Thermal Power Project
IP42 Volt meters, ampere meters,
ELECTROSTATIC PRECIPITATOR POWER CONSUMPTION OF ESP PER SG S. No
Description
Data
1
Input power
2
Output power from TR sets kW
120 Kw/TR
3
Output voltage KV
72 kV
4
Output current mA
2000 mA
5
Total connected load kW
118 kW
6
Maximum power requirement kW
154 kW
7
Corona power available Watts / m2
26 Watts / m2
8
Auxiliary power kW
0.25 kW
9
Rapping system kW
0.74 kW
10
Seal air fan
0.01 kW
11
Seal air heaters (during start up/ normal) kW
0.05 kW
12
Hopper heaters kW
4.5 kW
Thursday, June 21, 2012
(kVA )
206 kVA
kW
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR ERECTION SEQUENCE Check and set out the foundation
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Check and set out the foundation
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of Steel Structures
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of Steel Structures
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of pedestal
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of pedestal
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of pedestal
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection of pedestal
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Assemble the ash Hopper
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Assemble the ash Hopper
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erect the ash hopper
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erection the Ash hopper
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Erect the casing CASING STRUCTURE
Thursday, June 21, 2012
CASING WALL
2 x 600 MW Mahan Thermal Power Project
LRB
TRB
LRB
ELECTROSTATIC PRECIPITATOR
CHANNEL WITH INNERROOF
GABLE WALL GABLE WALL
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
OUTLET HOOD DISTRIBUTION SCREEN – O/L
GABLE WALL
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
5600/6192 COLLECTING PLATES ERECTED
PASS ’A’
70
ELECTROSTATIC PRECIPITATOR 10768/6192 COLLECTING PLATES ERECTED
PASS ’B’
71
ELECTROSTATIC PRECIPITATOR PASS’A’
PASS’B’
5961/12384 COLLECTING PLATES ERECTED
72
ELECTROSTATIC PRECIPITATOR
Erect the stairs and approaches
Assemble the emitting frame
Lift the emitting hanging beam
Lift the collecting and emitting frame
Check the emitting and collecting system Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Install the roof
Install the pressure-bearing insulator
Assemble the inlet funnel
Assemble the outlet funnel
Install the inlet/outlet funnel Install the heat insulation can and insulation axis Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR Install the HV leading-in wire Install the top penthouse and lifting system
Install the rapping system
Install the grounding device
Install and check the electrical equipment Install the hopper wall vibrator, ash exhaust, level indicator and electric heater. Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
ELECTROSTATIC PRECIPITATOR
Thursday, June 21, 2012
2 x 600 MW Mahan Thermal Power Project
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