Furnace Technology In producer gas making furnace, steam is added along with air to mainly control the Tar content in producer gas Temperature of producer gas Fusion of coal ash & clinker formation V. of producer gas Tar content in producer gas Temperature of producer gas Fusion of coal ash & clinker formation V. of producer gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Very high pressure boilers are usually __________ boilers. Water tube Natural circulation Fire tube Waste heat Water tube Natural circulation Fire tube Waste heat ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Minimum heat input rate only Maximum heat input rate only Volume of the combustion chamber Range of fuel firing rates Minimum heat input rate only Maximum heat input rate only Volume of the combustion chamber Range of fuel firing rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. 1250 1050 750 350 1250 1050 750 350 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the All of these Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases Change in volume during a change of temperature All of these Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases Change in volume during a change of temperature ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these ANSWER DOWNLOAD EXAMIANS APP
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