boiler training mr. customer – site specific a and w technologies
TRANSCRIPT
BOILER TRAINING
Mr. Customer – Site specific
A and W TECHNOLOGIES
Plant Cost Factorsper 1000 lbs. Steam
Fuel 74.9%
Labor 10.0%
Equip Deprec 9.8%
Electricity 2.5%Sewer 1.5%
Water 0.8%Chemicals 0.5%
Energy Loss Versus Scale Thickness
0
1
2
3
4
5
6
7
1/64 1/32 3/64 1/16
Scale Thickness (Inches)
En
erg
y L
oss
(%
)
Iron & Silica High Iron Content "Normal" Scale
Firetube Boiler
Heat
Water rises nearthe tubes and fallsalong boiler walls
WATER TUBE BOILER
FIRE BOX
Downcomers
RisersRisers
Steam Drum
Mud Drum
Steam
Water and its Impurities
• pH 8.0• M Alkalinity 100 ppm• Chlorides 12 ppm• Calcium 75 ppm• Magnesium 30 ppm• Total Hardness 105 ppm• Phosphate .1 ppm• Silica 5 ppm• Iron .05 ppm•Conductivity 230 mmhos
H O2
:
Boiler
Steam
CondensateLost
CondensateReturned
Blowdown
Process
Typical Boiler System
Deaerator
FW pump
Softeners
Makeup
:
Softeners (Sodium Zeolite)
Deaerator
FW pump
Softeners
Makeup
Softener Service Cycle
Hard
Soft
105 ppm hardness
0 ppm hardness
How It Works?
Na+
Na+ Na+
Na+ Na+
Ca+
Mg+
Na+
Na+
Ca+
Mg+
Resin Bead
Water Drop Resin Bead
Water Drop
Softener Backwash Cycle
Softener Brining Cycle
saltsolution
Softener Slow Rinse Cycle
Softener Fast Rinse Cycle
Softener Service Cycle
Hard
Soft
:
Deaeration
Deaerator
FW pump
Softeners
Makeup
Deaeration
STORAGESECTION
5psig 222 F
DEAERATINGSECTION
Deaeration
STORAGESECTION
5psig 222 F
TRAYS
Deaeration
STORAGESECTION
SteamInlet
5psig 222 F
Deaeration
STORAGESECTION
CondensateReturn
SoftMakeup
Steam
5psig 222 F
Deaeration
STORAGESECTION
Vent
CondensateReturn
SoftMakeup
Steam
5psig 222 F
To Feed Water Pumps
Solubility of Oxygen in Water
40 60 80 100 120 140 160 180 200 220 240
Temperature *F
2
4
6
8
10
12
14
1618
20
ppmOxygen
10 psi 232 F = 0-5 ppb5 psi 222 F = 0-10 ppb0 psi 185 F = 3 ppm
ppb range
Boiler
Steam
Typical Chemical Feed Points
Deaerator
SulfiteFeedCONT.
Boiler
Steam
Typical Chemical Feed Points
Deaerator
BoilerTrt.
fed by FWpumps on
sample pointFeedwater
SamplePoint Boiler water
Boiler
Steam
Typical Chemical Feed Points
Deaerator
CondensateFeed PointAlternative
Sample Point
Chemical FeedHands free & Bulk
Deaerator
A and W TECHNOLOGIES
AWBAWB
AWB
AWBAWB
Liquid Sulfite
InternalTreatment
Amine
Softeners
Bulk containers with productdirectly injected as noted.
Alkalinity
To steamheader
AWB
:
TESTING - SOFTENER
Deaerator
Softeners
Makeup
Sample PointSoftener
SOFTENER TESTING
• Hardness 0-1 ppm
TESTING - FEEDWATER
Deaerator
sample pointFeedwater
FEEDWATER TESTING
• Hardness 0-1 ppm
TESTING - BOILER WATER
SamplePoint Boiler water
BOILER TESTING
• Conductivity 4500 max Neutralized 2000-3000• Alkalinity 600-900• Sulfite 30-50
Image Industries Condensate Study
5
6
7
8
9
10
11
4-Feb
9-Feb
14-Feb
19-Feb
24-Feb
1-Mar 6-Mar 11-Mar
16-Mar
21-Mar
26-Mar
31-Mar
5-Apr 10-Apr
15-Apr
20-Apr
pH
Val
ue
Main C.R.
Wash C.R.
Line 1 LPHX
Line 2 LPHX
Product Usage701 2 Gal 1.5 Gal 1 Gal 2 Gal 1.5 Gal 1.25 Gal 1 Gal 705 1.5 Gal157 2 Gal 2.5 Gal157 L-1 Sat. .5 Gal157 L-2 Sat. 1.5 GalCost per day all treatment $124/day $123/day * $116/day * Protection for line 1 LPHX^ Protection for line 2 LPHX (Both) $72/day ^
TESTING - CONDENSATE
DeaeratorSample Point
TESTING
• pH 6.5 – 7.2• Conductivity Record• Hardness 0• Alkalinity 0
Blowdown
Boiler Blowdown
Bottom
Surface
Boiler Blowdown
Surface
NeedleValve
Boiler Blowdown
Surface
AutoBlowdown
Steam SystemA and W Blowdown Controller
Timed Sample Method
A and W TECHNOLOGIES
Full portedgate valve
Throttling needle valve
Max. 4’ Max 3’
Flush valve
Sampling electrode
Motorized ball valve.Mount horizontally awayfrom heat, as near to flooras possible.
cross
A and W
To drain or cascade to other boiler.
110 VAC
Controller
Save some money and keep the boiler hot Boiler System
A and W Cascading Blowdown
A and W TECHNOLOGIES
On Line Boiler Boiler in Hot Wet Storage
Boiler BottomBlowdown Boiler Bottom
Blowdown
BlowdownFlashTank
Drain
Flashed steam
Closed
Open
CheckValve
Closed
Open
Closed
Cascading blowdown from an operating boiler is used to keep the idle boiler filled with treated water and hot ready to bring on line. Insure idle boiler ventis open to completely fill boiler then close vent and allow blowdown to exit through the surface blowdownto the blowdown flash tank.
Open
Thank you for your business
A and W TECHNOLOGIES