What is Travelling Grate stoker?
[′trav·əl·iŋ ¦grāt ′stō·kər] (mechanical engineering) A type of furnace stoker; coal feeds by gravity into a hopper located on top of one end of a moving (traveling) grate; as the grate passes under the hopper, it carries a bed of fresh coal toward the furnace.
What is Travelling grate?
Traveling grates are designed for the use of granulated fuels, treated or not, of medium size. The biomass used for combustion can have a high ash content and a medium-low percentage of humidity.
What are the two types of stoker fired boiler?
Also called Mechanical Stokers.
What is Travelling grate boiler?
A highly efficient and reliable offering for the combustion of a wide range of biomass/fossil fuels. Manufactured as per Technology developed by Thermax.
What type of stoker is spreader?
What type of stoker is spreader/sprinkler stoker? Explanation: Spreader stoker is an over feed type of stoker. The coal burned on this stoker remains partly in suspension and partly on the grate.
What is a boiler stoker?
A mechanical stoker is a mechanical system that feeds solid fuel like coal, coke or anthracite into the furnace of a steam boiler. They are common on steam locomotives after 1900 and are also used on ships and power stations.
What is stoker fired boiler?
Stoker-fired boilers are used in many applications with thermal capacities below 50 MW. In these boilers, the fuel is fed by a stoker onto the grate, where it is ignited by heat from the refractory above. An important factor for the boiler efficiency is the condition of the steam tubes in the heat exchanger.
What is multi retort Stoker?
Conventional multiple retort stokers comprise a number of retorts and tuyeres extending longitudinally of the furnace and arranged in alternation across the width of the furnace. The tuyeres adjacent each retort deliver air for combustion into the burning mass of fuel being moved along the retort.
What is multi retort stoker?
What does a stoker do?
stoker, machine for feeding coal or other solid fuel into a furnace, usually supporting the fuel during combustion. A good stoker also supplies air for combustion and regulates the rate of burning and, in large installations, disposes of the ashes.
How does the chain run in Travelling Grate stoker?
How does the chain run in travelling grate stoker? Explanation: The chain travels over two sprockets. In both chain type and in bar type stokes. One sprocket is placed at the front end and other sprocket is placed at the rear end of the furnace.
How coal is pulverized?
Pieces of coal are crushed between balls or cylindrical rollers that move between two tracks or “races.” The raw coal is then fed into the pulverizer along with air heated to about 650 °F (340 °C) from the boiler. The powdered coal from the pulverizer is directly blown to a burner in the boiler.