Types of Boilers in Co-generation Plants

The energy of a thermal not utilized in power production must leave the plant in the form of heat to the environment. This waste heat can go through a condenser and be disposed of with cooling water or in cooling towers. If the waste heat is instead utilized for district heating, it is called co-generation.

Types of boilers are installed in the co-generation to supply the steam or hot water. In general, steam boiler is for power-driving, and hot water boiler for heating. Therefore, steam boilers and hot water boilers are both important in the co-generation. It’s reported that coal fired thermal power stations take a large part, while as more and more people concern environment and energy structure changes, biomass firing and gas firing plants are booming in countries.

Boilers for co-generation: electricity and heating

Coal and biomass corner tube boiler: It can generate electricity by burning coal fuel and biomass fuel such as rice husk, straw, sawdust, agriculture and forestry waste. The main structure of this boiler are furnace, separator, superheater, economizer, air preheater, solid material recycling equipment.

Gas or oil fuel boiler: As an ideal, efficient, low consumption, low pollution equipment in power plant, gas fuel power plant boiler adopts advanced PLC system and π-type layout, provide high quality of steam for generating electricity.

CFB steam or hot water boiler: Circulating fluidized bed boiler adopts circulating fluidized bed type combustion style. It can burn both coal and biomass. The fuel burning in the large furnace in a circulating type, so it can be burnt thoroughly.