Boiler auxiliary types of equipment usually consist of economizer, deaerator, condensate, damper. These auxiliary types of equipment would vary according to the project.
The flue gas from the boilers of industrial boilers or processes has a large amount of thermal energy. Economists use this energy in the flue gas to save energy by increasing the temperature of the water/air used in the boiler or anywhere in the business. Depending on the boiler flue gas outlet temperature and the fuel type, the efficiency of the boiler or plant is increased between 3% and 8,5%.
The deaerator is only part of a large boiler feed water system. Boiler feedwater usually contains two harmful dissolved gases; oxygen and carbon dioxide. The purpose of deaeration is to remove these gases before they are liberated in the boiler. This reduces corrosion in the boiler, steam lines, condensate lines, and heat transfer equipment.