Is nitrogen a waste gas in blast furnace?
(top gas), the waste gas from blast furnaces; mainly the products of the incomplete combustion of carbon. Its chemical composition during the smelting of cast iron on coal coke is 12–20 percent carbon dioxide, 20–30 percent carbon monoxide, up to 0.5 percent methane, 1–4 percent hydrogen, and 55–58 percent nitrogen.
What gas is produced in a blast furnace?
carbon monoxide
What property of the exhaust gas of the blast furnace make it useful for other?
Questions 4 to 7: True or False: Preheating of the blast air results in reduction in the consumption of coke. The exhaust gas of the blast furnace has high calorific value and therefore it is used in preheating the air.
Are blast furnaces still used?
Blast furnaces are currently rarely used in copper smelting, but modern lead smelting blast furnaces are much shorter than iron blast furnaces and are rectangular in shape.
What replaced blast furnaces?
HIsmelt
What type of fuel is coke?
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.
Why coke is not used as a fuel?
Answer: because fuel has different properties than coke as fuel can help a car move and coke can’t do do that as it does not have the chemicals to complete that task …
Is Coke better fuel than coal?
Coke is a better fuel than coal because; -Coke produces more heat on burning than coal. -Coke has a higher calorific value than coal. When equal masses of coke and coal are burnt, coke produces more heat.
Which is better fuel coke or coil?
Coke is a better fuel because coke produces more heat on burning as compared to coal. Coke has higher calorific value than coal. Also when coke is burnt, smoke is not obtained whereas coal produces smoke on coal.