Boiler feed and blowdown water parameters
All Types Of Boiler feed and blowdown water parameters
Boiler blowdown water parameters
[1] Lancashire boiler maximum TDS is 10000 ppm.
[2] Two-pass economic Boiler maximum TDS is 4500 ppm
[3] Packages 3 pass economic Boiler maximum TDS is 3500 ppm
[4] The low-pressure water tube Boiler's maximum TDS is 3000 ppm
[5] Coil boiler and steam generators Maximum Tds is - 2000 ppm
[6] Medium pressure water tube Boiler Tds - 1500 ppm.
[7] The high-pressure water tube Boiler Maximum Tds is -1000 ppm.
high-pressure boiler water parameters
*Acidic water is corrosive and alkaline water is more prone to scaling.
*Therefore Boiler feed water is kept slightly alkaline to avoid corrosion of boiler tubes.
All Types of small Boilers & Low-pressure boilers blow down water PH-10.5 to 11.5.
* High-pressure Boiler blowdown water PH-9.5 to 10.5
TH- Total Hardness in Blowdown water is (Nil) means Zero.
*Residual Sulphite As(Na2o3)
20-30mg/ltr
*Phosphates (Po4) (Added)
15-30 mg/Itr
*Residual Hydrazine as (N2H4)
0.1--0.5 mg/It
*Silica as(Si02)
15.0mg/Itr
*Oxygen (02) 0.007 %
*Conductivity < 10 Micro siemens per Centimeters
BOILER FEEDWATER PARAMETERS
*Low pressure &Shell type&Medium pressure water tube, Boilers maximum PH -8.5 -9.5 MAXIMUM (TDS ) -300 ppm
* Nowadays Better Result to all Industries Maintain <100 ppm
TH-Total Hardness Maximum
0-5ppm
*Total Alkalinity null as(caco3) 20%-60 %maximum Dissolved
* Oxygen 0.02 mg/ltr milligram per liter
Silica(as Sio2) 0.5 mg/ltr milligram per liter
HIGH-PRESSURE BOILER FEED WATER PARAMETERS
High-pressure boiler blowdown water parameters
