What is boiler in Nalco?
What is boiler in Nalco?
The National Aluminium Company Limited (NALCO), a ‘Navaratna’ company under Govt. of India, has invited online applications from qualified and experienced Indian nationals for filling Ten (10) vacancies to the post of Operator (Boiler) – Gr. I, Gr. II, Gr.
Which water treatment process is best for boiler water?
Reverse Osmosis is a very popular technology for power plants when used in combination with a polishing technology. They are typically used on high-pressure boilers in power plants or refineries where extremely high purity water is desired.
What are those chemicals used in treating the water in the boiler?
The softening chemicals used include soda ash, caustic and various types of sodium phosphates. These chemicals react with calcium and magnesium compounds in the feed water. Sodium silicate is used to react selectively with magnesium hardness.
What are the 2 types of boiler feed water treatment?
The treatment of boiler water can be put into two parts. These are internal treatment and external treatment. (Sendelbach, p. 131) The internal treatment is for boiler feed water and external treatment is for make-up feed water and the condensate part of the system.
Why is it important to have boiler water treatment scheme on our boilers?
Suitable boiler water treatments will eliminate oxygen from the water and help prevent corrosion. This can result in the general corrosion and reduced function of your system. Treatment can reduce the occurence of foaming and prevent these issues.
Why is natural water not good for boiler feed water?
Impurities in water. All natural waters contain various types and amounts of impurities. These impurities cause boiler problems and as such consideration must be given to the quality and treatment required of the water used for generating steam.
What is the most widely used agent for chemical de aeration?
Across all boiler feedwater systems that operate at or below 600 psig, the most commonly used oxygen scavenger, or reducing agent, in boiler feedwater systems is either sodium sulfite or the bisulfite analogue of sodium sulfite.
What are the 5 control of boiler carryover?
As discussed earlier, the principle chemical factors causing carryover are the dissolved solids, suspended solids, alkalinity, silica (vaporous carryover), and oil contents of boiler water. In many cases, limiting the concentration of these components will satisfactorily control carryover.
What is Eliminox used for?
Elimin-Ox is an all-volatile oxygen scavenger which can be used in all types of boilers. Elimin-Ox oxygen scavenger contains carbohydrazide which reacts directly with oxygen.It helps prevent oxygen damage and continues to passivate metal surfaces during wet lay-up.
