Lancashire Boiler_BME


Image result for lancashire boiler
This type of boiler is used in sugar mills and textile industries where, the steam is    required for power generation as well as for the process work. This boiler is also used in chemical industries.

Specifications : 

The specifications of one such boiler are as under.           
Shell diameter            : 2 to 3 m           
Length of shell           : 7 to 9 m 
Working pressure      : 16 bar 
Steam capacity          : 8000-9000 kg / hr       
Efficiency                  :  50 to 70 %

Characteristics of boiler : 

1.It is horizontal.
 2.  It is stationary.
3.  It is fire tube type.
4.  It is internally fired.
5.  It is multi tube boiler.
6.  It has natural circulation of hot gases.
7.  It burns solid fuel.
8.  It is a medium pressure boiler.

 Working : 

  • The water is fed into the boiler shell through the feed check valve. 
  • The level of the water is adjusted with the help of water level indicator. 
  • Coal is added to the grate through the fire hole. 
  • The coal is then burnt. The position of damper is adjusted in such a way that, the necessary air required for combustion of coal will be supplied. 
  • The combustion will produce hot gases. They move along the main flue tubes. They   
  • are deflected by fire brick arch. 
  • They are made to pass all along the length of the main flue tubes. At the back of the main flues, they are deflected again and made to pass through the bottom flue of the boiler. 
  • At the front side of the boiler shell, the gases in the bottom flue are divided into two side flues and sent back. 
  • From the side flues the gases enters to the smoke box and then finally go to the chimney.   
Youtube Link:


https://www.youtube.com/watch?v=EJmrMO72tak



Comments

  1. Hazel Grace27 January 2020 at 14:26

    This boiler works on the basic principle of heat ex-changer. It is basically a shell and tube type heat ex-changer in which the flue gases flow through the tubes and the water flows through shell.

    boiler treatment company in Ontario

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