Waste Heat Boilers, as the name implies, are boilers that utilize the waste heat and combustible substances from the exhaust gas, waste material, or waste liquid in various industrial processes to heat water or thermal oil to a certain temperature. Waste Heat Boilers are categorized into waste heat thermal oil boilers, waste heat hot water boilers, and waste heat steam boilers. These boilers can produce hot water, thermal oil, or steam through waste heat recovery, which can then be supplied to other sections for use.

Principle of Waste Heat Boiler Operation

Fuel, gas, and coal combustion generates high-temperature flue gases that release heat. These gases first enter the furnace, then the excess heat recovery unit in the front flue box, followed by the flue pipes, and finally the excess heat recovery unit within the rear flue box. The high-temperature flue gases are converted to low-temperature gases and discharged into the atmosphere through the chimney. Due to the greatly improved efficiency of utilizing the heat released from fuel combustion in the waste heat boiler, this type of boiler is highly energy-saving.