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Boilers, Underfeed Stoker Boiler Coal hopper Feeder rams and actuator Fuel ME 406/506 Spreader Stokers Fed by a rotating bladed wheel that throws the coal out over the grate Spreaders stokers are more expensive than other stokers in small sizes, and are more expensive than pulverized coal boilers in ,Principle of Solid Fuel Firing, During travelling of the great, the coal gets wholly burnt The ignition takes place below the stocker and burning of the field occurs at the top of the grate Ash contents are lifted up along with the combustion gases to the atmosphere unless it is checkedmoving grate | BioEnergy Consult, Moving grate incineration is the most efficient technology for a large-scale mixed MSW treatment because it is the only thermal technology that has been able ,Mechanical 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 stationsNo 1867c THE DESIGN AND OPERATION OF UNDERFEED ,, 798 DESIGN AND OPERATION OP UNDERFEED STOKERS are removed For wider furnaces, intermediate inclined movable grates or tuyeres are placed between the retorts and the dump plat These serve the purpose of providing more grate surface.

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