Table of Contents
- 1 Why the boiler water requires treatment?
- 2 What is the need for feed water treatment?
- 3 What is required for boiler feed water?
- 4 What is boiler feed water properties?
- 5 What is the purpose of feed water heater in regenerative Rankine Cycle?
- 6 What is boiler feed water explain?
- 7 What is first step of raw water treatment?
- 8 Why is ultraviolet light used in water treatment?
- 9 What is the water treatment of a boiler tube?
- 10 What is dealkalization in boiler feed water treatment?
Why the boiler water requires treatment?
Suitable boiler water treatments will eliminate oxygen from the water and help prevent corrosion. Impurities: water quality is a vital aspect of proper boiler functionality. A boiler with excessive impurities in the water will eventually break down as it can no longer function fully.
What is the need for feed water treatment?
Feedwater treatment is a pre-water treatment process to control deposition, eradicate impurities and prevent corrosion within a boiler system. In a boiler system, water is transformed into steam and expands by as much as 1000 times as it passes through steam pipes at rates of 100km/hr.
What is boiler water treated?
Boiler water treatment is a type of industrial water treatment focused on the removal or chemical modification of substances potentially damaging to the boiler. Varying types of treatment are used at different locations to avoid scale, corrosion, or foaming.
What is required for boiler feed water?
Characteristics of boiler feed water
| Working Pressure (Bar) | ||
|---|---|---|
| 75 – 100 | ||
| Dissolved oxygen (measured before oxygen scavenger addition) | mg/l | 0.02 (Physical removal of dissolved oxygen) |
| Total hardness | French degrees | 0.05 |
| Oily matter | mg/l | 0.05 |
What is boiler feed water properties?
Water absorbs more heat for a given temperature rise than any other common inorganic substance. It expands 1600 times as it evaporates to form steam at atmospheric pressure. The steam is capable of carrying large quantities of heat.
What is first step of raw water treatment Mcq?
Water Treatment MCQ Question 2 Detailed Solution The correct answer is Filtration.
What is the purpose of feed water heater in regenerative Rankine Cycle?
A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler. Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic efficiency of the system.
What is boiler feed water explain?
Feedwater is water that undergoes purification or preheating and is then supplied to boilers for hot water and steam production, or it can remain still. It is typically found in thermal power plants where it is stored and conditioned in tanks, known as boiler feedwater.
What does a boiler feed water treatment system remove?
An efficient and well-designed boiler feed water treatment system should be able to: Efficiently treat boiler feed water and remove harmful impurities prior to entering the boiler. Promote internal boiler chemistry control. Maximize use of steam condensate.
What is first step of raw water treatment?
Coagulation and flocculation are often the first steps in water treatment. Chemicals with a positive charge are added to the water. The positive charge of these chemicals neutralizes the negative charge of dirt and other dissolved particles in the water.
Why is ultraviolet light used in water treatment?
Ultraviolet light is another disinfection method for destroying disease-causing organisms in wastewater effluent in onsite wastewater treatment systems. The UV light destroys the genetic material of microorganisms which prevents them from reproducing.
Why do you need a boiler feed water treatment system?
The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime , expensive maintenance fees, and boiler failure as a result of scaling, corrosion, and fouling of the boiler and downstream equipment. But what is a boiler feed water treatment system and how does it work?
What is the water treatment of a boiler tube?
The objective of water treatment is to protect the boiler itself from damage, by corrosion or deposition of deposits. If you get internal solid deposits in the waterside of a boiler tube, this deposit then insulates the tube from the cooling effect of the water. The result is local overheating and tube failure.
What is dealkalization in boiler feed water treatment?
After the softening process, some boiler feed water treatment systems will utilize dealkalization to reduce alkalinity/pH, an impurity in boiler feed water that can cause foaming, corrosion, and embrittlement. Sodium chloride dealkalization uses a strong anion exchange resin to replace bicarbonate, sulfate, and nitrate for chloride anions.
What is the purpose of a boiler in a building?
As the name implies, a boiler’s purpose is to heat water so that it can be used for hot water systems or streamlines throughout the building, or facility. It can be used for HVAC heating or used to produce work such as running machinery.