Yokogawa Presantesation(1)
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Transcript of Yokogawa Presantesation(1)
BOILER CONTROL USING
DCSCENTUM CS3000
PREPARED BY:
Maulik V. Kunjadiya(IC-21)
Akash P. Patel(IC-42)
Akshay B. Patel(IC-43)
Jay V. Thakker(IC-62)
GUIDED BY:-
MR. MANJUNATH C.(EXTERNAL)
ASST. MANAGER,
YOKOGAWA INDIA LTD.
DR. V. A. SHAH
HEAD OF DEPT,
INST.& CONTROL DEPT,
DHARMSINH DESAI UNIVERSITY,
NADIAD.
CONTENTS
WHAT IS BOILER?
MAIN PARTS OF BOILER
BOILER CONTROL
P&ID OF BOILER CONTROL
PROJECT IMPLEMENTATION FLOWCAHRT
WHAT IS BOILER?
A boiler or steam generator is a device used to create steam by applying heat energy to water.
A boiler or steam generator is used wherever a source of steam is required.
The form and size depends on the application.
A boiler incorporates a firebox or furnace in order to burn the fuel and generate heat.
Types of boiler:-
1. Fire Tube Boiler
2. Water Tube Boiler
BOILER STEAM DRUM
FURNACE
SUPER HEATER
AIR PREHEATER AND ECONOMIZER
CONDESER
DEAERATOR
BLOW DOWN TANK
DESULFURIZATION
MAIN PARTS OF BOILER
BOILER STEAM DRUM
A steam drum is a standard feature of a water-tube boiler.
It is a reservoir of water/steam at the top end of the water tubes.
The drum stores the steam generated in the water tubes and acts as a phase-separator for the steam/water mixture.
FURNACE
A boiler incorporates a firebox or furnace in order to burn the fuel and generate heat.
Temperature in furnace control by air fuel ratio.
SUPER HEATER
The Super heater has an elaborate set up of tubing where the steam vapor picks up more energy from hot flue gases outside the tubing and its temperature in now super heated above the saturation temperature.
The super heated steam is then piped through the main steam line to the high pressure turbine.
AIR PREHEATER AND ECONOMIZER
An air preheater heats the air sent into the combustion chamber to improve the efficiency of the combustion process.
An Economizer use the heat from the exhaust gases to heat the feed water.
The Condenser is a tube in which cooling water is circulated through the tubes.
The exhaust steam from the low pressure turbine enters the shell where it cooled and converted to water by flowing over the tubes.
The condenser generally uses either circulating cooling water from a cooling tower to reject waste heat to the atmosphere, or once through water from a river , lake or ocean.
CONDENSER
DEAERATOR
A steam generating boiler requires that the boiler feed water should be devoid of air and other dissolved gases, particularly corrosive ones, in order to avoid corrosion of the metal.
Here, steam is used to maintain the tank water temperature at around 105°C, which removes air from the water.
Boiler blowdown is water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam.
The water is blown out of the boiler with some force by steam pressure within the boiler.
A steam boiler evaporates steam from liquid water; and requires frequent replenishment of boiler feed water for the continuous production of steam required by most boiler applications.
BLOW DOWN TANK
DESULFURIZATION
Flue-gas desulfurization (FGD) is a set of
technologies used to remove sulfur
dioxide (SO2) from exhaust flue gases of
fossil-fuel power plants, and from the
emissions of other sulfur oxide emitting
processes.
BOILER CONTROL
Boilers are the primary source of steam and hot water generation in industrial
processing plants where steam demands vary very frequently according to the
requirements.
Hence, a well designed boiler must be capable of giving immediate response to
these load demand variations.
While doing so it must also maintain its efficiency and safety features.
In order to achieve this, various techniques of boiler control are available, like
DDC(DIRECT DIGITAL CONTROL) or DCS(DISTRIBUTED CONTROL
SYSTEM)
Here we use DISTRIBUTED CONTROL SYSTEM for Boiler Control.
Boiler
Boiler Drum
Furnace
W
i
n
d
B
o
x
BF
W p
um
p
201FT
LC
201
202FT
Air
Filter Air-pre
heater
201PT
Fuel
103FT
FC
103
102FT
FC
102
201 TT
Deaerator
202PT
202LT Feed Water Tank
Flue
GasesBoiler Feed water
Boiler
Feed
water
Economizer
C
H
I
M
NE
Y
Fuel
Storage
FD fan
ID fan
condensor
Turbine
Superheater
condensate water
+
-
Fl
u
e
G
a
s
e
s
201TIC
Attempt.
202PIC
201PIC
201
FIC
202LIC
BLOW
DOWN
TANK
FROM Attempt. LINE
FROM Superheater LINE
301TI
302TI
303TI
305TT
AH
AL
AH
AL
305TIHH
304PT
304PIHH
LL
LL
302TT
ESP
Dust
P.A
.
fan
FCV201
PCV202
LCV201
LCV202
FCV103
FCV102
TCV201
301PT
302PT
LT201
303PT
303PI
302PI 301
PI
TO BD TANK
Oxidization gas
Lime StoneGypsum
Clean Gas
Circulation
Pump
Spray Tower
Flue Gas Desulfurization
P&ID FOR BOILER CONTROL
P
I
Process Line
Electric Line
Pneumatic Line
Fan
Pump
Heat
Exchanger
Control Valve
On Central control Panel
In the Field Panel
Computer Indicator
I/P converter
DP Transmitter
P&ID Legend
Symbol Symbol Name Symbol Symbol Name
TAG NAME COMMENT
FT102 AIR FLOW TRANSMITTER
FT103 FUEL FLOW TRANSMITTER
FT104 BLOW DOWN WATER FLOW TRANSMITTER
FT201 BFW FLOW TRANSMITTER
FT202 STEAM FLOW TRANSMITTER
TRANSMITTERS
FLOW TRANSMITTERS
TAG NAME COMMENT
TT201 STEAM TEMPERATURE TRANSMITTER
TT301 FLUE GAS TEMPERATURE TRANSMITTER
TT302 DEAERATOR TRANSMITTER
TT303 BFW TEMPERATURE TRANSMITTER
TT305 BOILER TEMPERATURE TRANSMITTER
TEMPERATURE TRANSMITTERS
TAG NAME COMMENT
PT201 STEAM PRESSURE TRANSMITTER
PT202 DEAERATOR PRESSURE TRANSMITTER
PT301 BOILER DRUM PRESSURE
PT302 BOILER DRUM PRESSURE
PT303 WIND BOX PRESSURE
PT304 BOILER PRESSURE TRANSMITTER
PRESSURE TRANSMITTERS
LEVEL TRANSMITTERS
TAG NAME COMMENT
LT201 BOILER DRUM LEVEL TRANSMITTER
LT202 DEAERATOR DRUM LEVEL TRANSMITTER
TAG NAME COMMENT
TI301 FLUE GAS TEMPERATURE INDICATOR
TI302 DEAERATOR TEMPERATURE INDICATOR
TI303 BFW TEMPERATURE INDICATOR
TI305 BOILER TEMPERATURE INDICATOR
PI301 BOILER DRUM PRESSURE INDICATOR
PI302 BOILER DRUM PRESSURE INDICATOR
PI303 WINDBOX PRESSURE INDICATOR
PI304 BOILER PRESSURE INDICATOR
TI306 STEAM TEMPERATURE INDICATOR
INDICATORS
CONTROL VALVES
TAG NAME COMMENT
FCV102 AIR FLOW CONTROL VALVE
FCV103 FUEL FLOW CONTROL VALVE
FCV104 BLOW DOWN WATER FLOW CONTROL VALVE
FCV201 BFW FLOW CONTROL VALVE
LCV201 DEAERATOR LEVEL CONTROL VALVE
LCV202 DEAERATOR LEVEL CONTROL VALVE
PCV202 DEAERATOR PRESSURE CONTROL VALVE
TCV201 STEAM TEMPERATURE CONTROL VALVE