Lamont boiler is a high pressure, forced circulation, water tube boiler with internally fired furnace. An external pump is used to circulate the water within small diameter water tubes of the boiler. This boiler was invented by Walter Douglas La-Mont in the year 1925. At that time this boiler was invented to use in ships.
.It is a high pressure boiler. It is water tube boiler working on forced
circulation system. The water from the storage drum is drawn by the circulation pump.
Compressed to about 2.5 bar above the drum pressure and supply to header which distribute
water to the generating tube G. Here some water is converted into steam and a mixture of water
and steam then pass into the storage drum.. The steam is further heated in the super heater
before being taken out water from hot well is supplied by the feed pump through the
economiser to the storage drum. The sludge if any would settle drum and can be removed from
the bottom.