Chimney Chimney, as we know, is used to reject the flue gases to the atmosphere, coming from the Steam Boiler during operation. Also, it is a mega structure in Steam Boiler assembly and any discrepancy in its structural and foundation work can cause extremely serious damages, may even lead to casualties or plant shutoff till its re-erection. The designer must consider all the factors while designing chimney and one of…

What is Mobrey? Mobrey is the name used for the Automatic water level controller; it comes under the category of mountings and fittings of Steam Boiler Assembly. As the name suggests, it is used for maintaining the water level in the Boiler shell. Mobrey is mostly used in smoke tube steam boilers not in water tube boilers, as the shell diameter of the former is greater than that of latter…

Forced Draught Fan is a type of a fan supplying pressurized air to a system. In case of a Steam Boiler Assembly, this fan is of a great importance. As we know, for a Steam Boiler to generate steam, combustion must occur, be it any fuel (wood/coal/rice husk/pet coke/LDO/Furnace oil) and for combustion to exist one of its three main requirement, is the air. And this requirement is compensated by…

In winters, human bodies shiver, so we insulate ourselves by wearing woolen clothes. A boiler in operation doesn’t shiver to maintain its internal energy, even if it did, it would have been highly undesirable keeping in mind the impacts of vibration in a system. Ambient temp being extremely low, so the temperature difference between human body and ambient, is large. This enhances the heat transfer between them, this woolen insulation…

As we all know, the air pollution norms are getting stricter with every day passing by. So it becomes quite obvious to install and commission an air pollution control device. One such air pollution control equipment is the Bag Filter. Bag Filter helps in separating the particulate matter from the flue gas coming out of the Boiler. Most common type of Bag Filter is Pulse jet type. Pulse jet bag…

06

Feb 2017

Boiler Aging

Boiler Aging Like humans, even Steam Boiler ages with time. And it is very essential for one to be aware of the changes that Boiler goes through with time. Life cycle of Steam Boiler components are governed by magnitude of stress, variation in operating parameters, chemical regime during its service life and suitability of materials to sustain those conditions. IBR Regulation – 391 A As per IBR Regulation – 391…

Fluidized bed combustion (FBC) is a combustion technology used to burn solid fuels. A bed of solid particles is said to be fluidized when the pressurized fluid (liquid or gas) is passed through the medium and causes the solid particles to behave like a fluid under certain conditions. Fluidization causes the transformation of the state of solid particles from static to dynamic. Fluidized Bed Combustion is the ignition of a…

Both Primary air and Secondary air have an important role to play in fuel combustion and must be provided in different ratios according to the fuel quantity. For combustion of any fuel to take place, 3 basic ingredients are needed – Fuel, Air (Oxygen to specific) and heat. Air provided for combustion reacts with the fuel according to its stoichiometric ratio. But In real some percentage of air which has…

Steam Accumulator is a shell type pressure vessel which is used to store steam generated by a boiler and use it for varying load demands. Steam Boilers are generally designed for a certain capacity at which they could supply steam continuously which is also its maximum continuous rating. So, the steam boiler designed for higher steam requirements can be made to run on lower loads or lower steam demands but…

Boiler water treatment chemicals is employed for generating steam. The first perform of a boiler is to transfer heat from hot gases generated by the combustion of fuel into the water till it becomes hot or turns to steam. Boiler feed water typically contains impurities, that impairs boiler operation and potency. As a lot of steam is gaseous, the water becomes a lot of concentrated with salts and different impurities.…