The boiler that produces steam is called a steam boiler and is used in thermal power plants, ships, locomotives, and manufacturing industries. The steam boiler is the main thermal energy equipment and power equipment. It belongs to special equipment, the design, production, ex-factory and installation of the boiler must be monitored by the national technical supervision department. The user needs to obtain the boiler use certificate to operate the boiler.
A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam. The steam boiler is essentially an energy conversion device that converts chemical energy released by combustion of fuel (solid fuel, liquid fuel, and gaseous fuel) into heat (steam).The steam produced may be supplied at low pressure for industrial process work in cotton mills, sugar industries etc.
1. For generating power in steam engines or steam turbines
2. In process industries(such as food plant, paper mill, textile mill, sugar mill, chemical factory, pharmaceutical industry, etc.) for various processes.
3. For heating the buildings in cold weather
Boilers can be classified in a number of ways, here are some steam boiler types
1. Horizontal, vertical and inclined boilers
2. Stationary, portable and marine boilers
3. Water tube and fire tube boilers
4. Single tube and multi tube boilers
5. Internally fired and externally fired boilers
6. Naturally circulated and forced circulated boilers
7. Source of heat (solid fuel, liquid and gaseous fuel, electrical and nuclear energy)
8. Low pressure, medium pressure and high pressure boilers