Fuels and Combustion The lowest temperature, at which a solid fuel produces enough vapors to support continuous combustion, is called Fire point Kindling temperature Smoke point Burning temperature Fire point Kindling temperature Smoke point Burning temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 80 18 48 8 80 18 48 8 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. May increase or decrease, depends on combustibles Remains constant Decreases Increases May increase or decrease, depends on combustibles Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke should have very low Porosity Sulphur & phosphorous content Fusion point of its ash Hardness & strength Porosity Sulphur & phosphorous content Fusion point of its ash Hardness & strength ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas containing least amount of tar is produced by the Partial combustion of coal Partial combustion of large size (< 50 mm) coke High pressure gasification of coal (e.g. in Lurgi gasifier) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of coal Partial combustion of large size (< 50 mm) coke High pressure gasification of coal (e.g. in Lurgi gasifier) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about 25000 kcal/kg Same as that of coal middling 8800 kcal/kg 8800 kcal/m³ 25000 kcal/kg Same as that of coal middling 8800 kcal/kg 8800 kcal/m³ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS