Boiler Water Treatment
1
Boiler Water Treatment It is necessary for the water in the boiler be treated to achieve great steam production at a lower cost. Another reason is that the water has chemical elements it that must be controlled to limit and eliminate the formation of scaling, corrosion and entrainment in the boiler. Scaling may cause low heat transfer at the point of deposits. Some of the more common scale forming constituents are silica, iron, oil, hardness and sugar. Corrosion causes development of weak spots which could lead to failure. Corrosion may be due to chloride, iron, sugar, oil and dissolved gases such as oxygen. Entrainment is often caused by variety f soluble and suspended solids. Chemicals were put in the high pressure and low pressure chemical injection tank to control the formation of the chemical elements that is carried by the water to the boiler. Dosing points Boilers 1 and 2 Boiler 3 Chemical Dillution Chemical Dillution Low Pressure Line Chemical Tank Diclean B-901 = 2.1 kg Oxynon S-340FG = 2.4 kg Dillute to 200 L water Diclean B-901 = 1.4 kg Oxynon S-340FG = 1.6 kg Dillute to 200 L water High Pressure Line Chemical Tank Caustic Soda = 2kg Diclean B-562 = 900g Dillute to 200 L water Caustic Soda = 2kg Diclean B-562 = 900g Dillute to 200 L water The figure above indicates the chemicals and the dosage required. Dosage will vary depending on the result after the test has been done by the Q.A. in the water sample. the turbine tender gets water sample from the feedwater, continuous blowdown of the three boilers. Below is the table indicating the boiler water treatment control parameters.
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Transcript of Boiler Water Treatment
Boiler Water Treatment
It is necessary for the water in the boiler be treated to achieve great steam production at a lower cost. Another reason is that the water has chemical elements it that must be controlled to limit and eliminate the formation of scaling, corrosion and entrainment in the boiler.
Scaling may cause low heat transfer at the point of deposits. Some of the more common scale forming constituents are silica, iron, oil, hardness and sugar. Corrosion causes development of weak spots which could lead to failure. Corrosion may be due to chloride, iron, sugar, oil and dissolved gases such as oxygen. Entrainment is often caused by variety f soluble and suspended solids.
Chemicals were put in the high pressure and low pressure chemical injection tank to control the formation of the chemical elements that is carried by the water to the boiler.
Dosing points Boilers 1 and 2 Boiler 3Chemical Dillution Chemical Dillution
Low Pressure LineChemical Tank
Diclean B-901 = 2.1 kgOxynon S-340FG = 2.4 kg
Dillute to 200 L water
Diclean B-901 = 1.4 kgOxynon S-340FG = 1.6 kg
Dillute to 200 L waterHigh Pressure Line
Chemical TankCaustic Soda = 2kg
Diclean B-562 = 900gDillute to 200 L water
Caustic Soda = 2kgDiclean B-562 = 900gDillute to 200 L water
The figure above indicates the chemicals and the dosage required. Dosage will vary depending on the result after the test has been done by the Q.A. in the water sample. the turbine tender gets water sample from the feedwater, continuous blowdown of the three boilers. Below is the table indicating the boiler water treatment control parameters.
