Fuel economy in an industrial furnace operation can not be achieved by the use of Combustion air not enriched with oxygen Stoichiometric combustion air Non-preheated combustion air Recupterators TRUE ANSWER : ? YOUR ANSWER : ?
The function of an economiser in a boiler is to preheat the Feedwater Combustion air Furnace oil Pulverised coal TRUE ANSWER : ? YOUR ANSWER : ?
Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent. 65 40 80 20 TRUE ANSWER : ? YOUR ANSWER : ?
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent. 80 20 60 40 TRUE ANSWER : ? YOUR ANSWER : ?
Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case of complete combustion of Blast furnace gas with oxygen Furnace oil with oxygen Blast furnace gas with air Furnace oil with air TRUE ANSWER : ? YOUR ANSWER : ?
__________ atmosphere is maintained inside an iron blast furnace. Decarburising Oxidising Reducing Inert TRUE ANSWER : ? YOUR ANSWER : ?
Tunnel kilns are usually used for Reheating of slabs Melting of glass Drying/tempering of refractories Roasting of pyrites TRUE ANSWER : ? YOUR ANSWER : ?
Ceramic recuperators compared to metallic recuperators for the same duty Occupy more space Have higher pressure differential between flue gas & air side Are less costly Are lighter TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an additive for flue gases from furnace to reduce its dew-point? Ammonia Alkaline powders Fine dolomite None of these TRUE ANSWER : ? YOUR ANSWER : ?
In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the Ostwald chart Sankey diagram None of these Cox chart TRUE ANSWER : ? YOUR ANSWER : ?