Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion of pulverised fuel In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel Suppresses the discharge of fine dust and grit into atmosphere All of these Requires larger combustion chamber than rich gaseous fuel In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel Suppresses the discharge of fine dust and grit into atmosphere All of these Requires larger combustion chamber than rich gaseous fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant? Ammonium sulphate Ammonium nitrate None of these Ammonium phosphate Ammonium sulphate Ammonium nitrate None of these Ammonium phosphate ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having Lower carbon dioxide content Higher methane content and thus higher calorific value Higher carbon monoxide content None of these Lower carbon dioxide content Higher methane content and thus higher calorific value Higher carbon monoxide content None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Hard pitch is used for making Plastics Perfumes Insecticides Pulverised fuel Plastics Perfumes Insecticides Pulverised fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During the carbonisation of coal All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C ANSWER DOWNLOAD EXAMIANS APP
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