Application of Flue Gas Waste Heat Recovery Technology in the Industrial Field

Application of Flue Gas Waste Heat Recovery Technology in the Industrial Field

Flue gas waste heat recovery refers to an energy-saving technology that recovers and reuses the heat in the flue gas emitted during industrial production to reduce energy waste and environmental pollution. In the industrial field, flue gas waste heat recovery technology is widely used in a variety of boilers, kilns, smelting furnaces and other equipment, through the recovery of flue gas waste heat, you can reduce energy consumption, improve the efficiency of the equipment, and at the same time reduce the emission of greenhouse gases, with significant economic and environmental benefits.

There are two main ways of flue gas waste heat recovery technology: one is through the heat exchanger to transfer the heat in the flue gas to water or other media, and the other is through the waste heat boiler to convert the heat in the flue gas into steam. Among them, the heat exchanger method is subdivided into direct contact heat transfer and indirect heat transfer. Direct contact heat transfer refers to direct contact between the flue gas and water, through the heat exchanger to transfer heat to water, the advantage of this method is the high efficiency of heat transfer, but the disadvantage is that the dust and harmful substances in the flue gas will pollute the water quality. Indirect heat transfer refers to the metal or non-metallic heat exchanger will be in the flue gas heat transfer to water or other media, the advantage of this way is that the water quality will not be contaminated, but the disadvantage is that the heat transfer efficiency is relatively low.

Flue gas waste heat recovery technology has a very wide range of applications, not only for a variety of industrial production processes, but also for some civil areas, such as centralised heating, hot water supply and so on. Through flue gas waste heat recovery technology, it can significantly improve the efficiency of energy use, reduce energy waste and environmental pollution, and make an important contribution to sustainable development.