Fuels and Combustion — Summer 2024

Define fuel and classify them by making a tree diagram.

Discuss various theories suggested by geologists regarding the formation of coal.

Enlist any three properties of solid and liquid fuel. Also, Explain their measurement techniques in detail.

Explain origin and classification of petroleum crude.

Describe the process of coalification. State the rank of coal with a block diagram.

Enlist the different objectives and industrial applications of coal washing. Describe in brief the Float and Sink test for coal washing with neat sketch.

Enlist coal combustion techniques. Explain fluidized bed combustion with neat sketch. Also, discuss the advantage of fluidized bed combustion over fixed bed combustion.

Explain augur mining.

Differentiate between direct and in-direct coal liquefaction process.

Describe the vacuum distillation process with neat flow diagram.

Explain room and pillar mining.

Briefly explain the storage and handling of acetylene gas.

Explain the reforming of naphtha in detail with neat flow diagram.

Define Biogas. Enlist the various steps involved in the biogas production.

Explain the oxy-rich combustion and discuss its significance.

Describe in detail about the production processes and technologies available for bio-diesel production.

Enlist various generations for bio-fuel production. Also, discuss the various challenges faced in using Ethanol as a fuel in India

Explain turn down ratio of burner. State the various types of gas burner with their application.1

Define water gas. Describe the production of water gas with all reactions involved with schematic diagram.

Define adiabatic flame temperature.

Discuss the working and industrial application of traveling grate stoker boiler.

Acoal sample on analyzing by weight gave carbon 85%, hydrogen 6%, oxygen 6% and remaining are incombustible gases. Determine minimum weight of air required per kg of coal for chemically correct composition.

Define stoichiometric air and excess air requirement for combustion.

Enlist various methods for hydrogen production. Explain any one in detail.

An ultimate analysis of gasoline sample gave carbon 85%, hydrogen 15%. Calculate the ratio of air to gasoline consumption by weight if the volumetric analysis of the dry exhaust gas is CO = 11.5%; CO = 1.2%; O22 = 0.9%; and N = 86%. Also, determine the % of excess air required for2 complete combustion.