Firetube Boiler and Watertube Boiler for Industries

WNS series firetube gas oil boiler

Boilers and water systems generate hot water or steam by using fuel to raise the energy content of water. The fuel input can include natural gas, coal and oil, Bagasse, wood waste, black liquor or electricity. ZBG has devoted in boiler manufacturing for 70 years and has developed many types of steam boilers and hot water boilers for industrial applications.

There are two main types of boilers, based on the type of heat transfer system they use:

Firetube boilers – store water in the main body of the boiler. They heat the water via conduction where a tube carrying the combustion gases is immersed in water. Firetube boilers are simple and low cost and best suited to producing hot water or low pressure steam.

SZS series gas or oil fired steam boiler

Watertube boilers – Combust fuel in a central chamber. Gases flow around tubes that contain the water. Heat radiation from the flame and conduction and convection from the gases heat the watertubes. They can be more expensive and complex, but can produce steam at very high temperatures.

Industry sectors vary in the boilers they use, for example:

Food processing – use some large boilers, but generally a large number of small boilers
Pulp and paper – generally use large steam boilers
Chemicals – use both small and large boilers
Primary metals – use large boilers.