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Features and Components of Industrial Furnace

Source: | Updated: Sep 18, 2016

Furnace is a device that is used to heat a material in order to exchange their shape as like in shaping and forging or the 

properties of the material can be changed. These furnaces are mostly used for melting the metals that are used for casting. 

Furnace can be termed as a type of oven.

It is an enclosed structure inside, which the material is heated to very high temperatures. It is a device that is designed to 

perform the water or air heating and is circulated throughout a building in a heating system.


The design of the furnaces is in such a way to consume fuel and heat as less as possible in a given time that requires low 

labor cost.

Efficient features:

The amount of heat that is to be given is prior determined to the material. There exists a sufficiency in the liberation within the 

furnace to heat the required stock. A proper heat transfer from the gases to the surface of the heating stock takes pace.

Temperature should be uniform within the stock. The heat loss from the furnace is minimized to the least possible. In the 

furnace the product of the flue gases directly comes in contact with the provided stock.

Components of an industrial furnace:

Components of an industrial furnace

In industrial furnaces it serves the purpose of heating i.e. it serves as a reactor to provide heats to the reaction. The design 

of the furnaces varies, however the basic features are most common among all of them.

The basic components of a furnace are:

                                                              Radiant sectionConvection section,

                                                              Radiant coilBurnerSoot blower

                                                              StackInsulationFoundationsAccess doors


The fuel flows in the burner is burnt from an air blower. The furnaces can have more than one burner. The furnaces can be 

arranged in cells with a particular set of tubes, or the burners can be flooring mount, on wall or roof mounted depending on 

the design demand. The flame of the burner heats up the tube those in-turn heats up the fluid that is present inside.

The first part of the furnace i.e. radiant section or fire box, where the combustion takes place by the action of radiation of the 

tubes around the fire inside the chamber. The heat fluid heats upto the desired temperature level. The gas that is formed 

from the combustion is known as flue gas. After the fire box the flue gases enters convection section where the heat is 

recovered before their vent into the atmosphere by convection. In industries commonly secondary fluids are heated in these 

furnaces with special additives like anti rust and with high heat transfer efficiency. Thus heated fluid is circulated in the whole 

plant where heat is needed instead of direct heating of the stock material in the product line. The material can be volatile or 

may be prone to cracking with the furnace temperature.

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