Question

Which fuel is produced by slow pyrolysis?

(a) Dung cake

(b) Coke

(c) Charcoal

(d) Briquette

The question was asked in a national level competition.

I need to ask this question from Artificial Solid Fuels & Liquid Fuels in section Steam Power Plant of Energy Engineering

Answer 1

The correct choice is (c) Charcoal

The best I can explain: Charcoal is produced by slow pyrolysis. It is prepared by heating wood with limited supply of air below 280°C. It contains 80-90% of carbon. It is used for domestic purpose namely cooking, heating and metallurgical purpose. Charcoal is the light weight black carbon and ash residue produced by removing water and other volatile constituents from animal and vegetation substances. There are different types of coal namely sugar charcoal, activated charcoal, lump charcoal, etc.