Tech Process.

Boiler Feed Water Treatment Deaeration Process: ## The process through which the dissolved gases are removed from water is called "Deaeration". The equipment, which is used in this method, is called "Deaerator". Why do we use deaerators?... T he Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam.additional benefit is that the amount of chemicals used to treat the boiler water can be reduced.  # Dissolved CO2 combines with water to form carbonic acid that causes further corrosion.  # Working Principle of Deaerators :- 1️⃣ by Henry’s Law- Accordind to William Henry state that gas solubility in a solution decreases as the gas partial pressure above the solution decreases. In simple ...

Centrifugal pumps are joined in series or in parallel to meet certain operational requirements. They are joined in series  (Fig. 10.18a)  when the delivery head requirements are high as in case of pumping in high rise buildings or operating sprinkler systems etc. Two or more pumps may be joined in such a way that the delivery of one becomes the inflow into the other. Pumps are joined in parallel (Fig. 10.18b) when they have a common source and pumping head is the same. In situations like pumping from rivers or a pond or dewatering of foundations, pumps could be joined in parallel. The pumps will now operate against the same head H = H 1  = H 2  =…. If the characteristics of the pumps differ too much, this relationship may not be applicable. PLEASE READ MORE..... Industrial Catalyst And Classification. Electrical Hazards And Precautions. Renewable, Sustainable, Clean, or Green Energy. What Is Renewable Energy Or Renewable Resources, Or Clean Energy? Standar...

 #Poor quality steam refers to high moisture content, Steam is best when superheated.  From the perspective of Process Design Engineering, we assume that even saturated steam is dry.  *In reality, steam in most process plant piping systems is wet. Often steam is wet because of ambient heat loss.  *Dry steam is actually invisible. Steam venting from a line only looks white because the steam is wet.  *Wet steam is generated from boilers because of entrainment of BFW into the evolved steam. *Entrained boiler feed water contains salts. The TDS of the entrained water is the same as the boiler blowdown  *Salt content of the blowdown water is 10-20 times > the salt content of the boiler feedwater. That’s why moisture in steam due to entrainment is more serious than moisture in steam due to condensation. Condensed moisture is free of salts.  ️*For Steam Turbines Moisture in the supply steam contains salts. The salts slowly accumulate on the ...