Flue gas waste heat boiler The flue gas heat can be recovered, and the recovered heat can be used as boiler make-up water and domestic water as required, or the heated air can be used as boiler combustion air or drying materials. Save fuel costs, reduce production costs, reduce exhaust emissions, energy conservation and environmental protection. The reconstruction investment has been recovered for 3-10 times, with remarkable economic benefits.

The waste heat boiler can use the waste heat of high-temperature flue gas, chemical reaction, combustible gas and high-temperature materials to produce high-pressure, medium pressure, low-pressure steam or hot water for process flow or heat supply in the heat supply network. Steam generator That is, waste heat recovery by waste heat boiler is one of the important means to increase energy utilization. At the same time, the waste heat boiler is an important equipment in the low-temperature steam turbine power generation system, which can provide steam for steam turbine and other power machinery.

There is no combustion process in the waste heat boiler, which is essentially just a heat exchanger of flue gas water or flue gas steam. In practical application, most waste heat boilers use 350~800 ℃ high-temperature flue gas, which is a low-temperature boiler compared with the operating temperature of coal-fired boilers. Nearly 80% of flue gas waste heat in metallurgical industry is recovered by waste heat boiler. The waste heat boiler of the power plant mainly uses the waste heat of gas turbine flue gas to heat water, which becomes high-pressure and high-temperature steam and enters the steam turbine to do work. It is a combined generator set.

The flue gas waste heat boiler has been widely used in textile printing and dyeing, chemical industry, artificial leather, building materials and other industries. However, due to its high return oil temperature, which is generally 200~250 ℃, the exhaust gas temperature of the boiler is also high, which can reach 300~350 ℃ under normal conditions, causing a large amount of heat to be discharged into the atmosphere and wasted. In the era of world energy shortage and soaring energy prices, energy conservation has become a demand for sustainable development of the country.

smoke Waste heat boiler manufacturer It means that under the same heat load, the number of tubes is reduced, the flow area is expanded, the flow rate can be reduced, the wear is greatly reduced, and the service life of the heat exchanger is increased. The cold and hot fluid of the heat pipe heat exchanger is arranged in a pure countercurrent manner, the flue gas and air flow are uniform, the heat coefficient of the transfer chamber is high, the volume is small, the weight is light, and the layout is convenient. The heat pipe heat exchanger has a strong ability to prevent ash deposition and plugging: because it avoids the dew point of flue gas, the dust is not easy to stick to the fins and pipe wall. During design, the proportion of flue gas and air side channel shall be adjusted and the flow rate shall be adjusted to facilitate self cleaning. At the same time, the heat pipe will generate self vibration when conducting heat, so that the ash is not easy to adhere to the pipe wall and fins, so the ash will not be blocked.