Reverbaratory furnace

Abstract

The invention discloses a reflecting furnace, at least one section of a cooling water pipe of a heat exchange system of which is spiral as a plurality of S shape successively to compose a plurality of concentrated heat dissipation part which is located inside a successive section. The heat exchange system also comprises a hot water cycle system, a hot water inlet of which is communicated with a hot water outlet of a water cooling system, and at least one section of a preheating water pipe is spiral as a plurality of S shape successively to compose a plurality of concentrated heat dissipation part inside a successive section which is located at a air supply duct; the large concentrated heat dissipation part enables heat exchange efficiency between gas and liquid to be greatly high; the hot water cycle system preheats cool air guided in furnace chamber with high temperature water discharged from the cooling water pipe, which avoids wasting heat energy with the energy-saving efficiency as much as 50%.

Description

technical field [0001] The invention relates to a reverberatory furnace, more specifically, to a reverberatory furnace for metal smelting that adopts water cooling for high-temperature flue gas. Background technique [0002] In the prior art, cracked oil or natural gas is often used as the heating source of the reverberatory furnace. When heating, air must be blown into the furnace, and the high-temperature flue gas generated after combustion is cooled and then sent to the dust collection equipment for treatment and discharged. The heating temperature of the smelting furnace is generally above 1000 degrees Celsius, and the temperature of the high-temperature flue gas usually exceeds 800 degrees Celsius. In the prior art, the cooling method using cooling water and high-temperature flue gas to exchange heat in countercurrent can reduce the temperature of the flue gas to 400-500 degrees Celsius, but the temperature of the flue gas after cooling is still high, carrying a large ...

AI Technical Summary

Problems solved by technology

In the prior art, the cooling method using cooling water and high-temperature flue gas to exchange heat in countercurrent can reduce the temperature of the flue gas to 400-500 degrees Celsius, but the temperature of the flue gas after cooling is still high, carrying a large amount of heat energy to be discharged, and Due to the high temperature, some follow-up treatment such as bag dust removal cannot be directly carried out

Moreover, the hot water generated after heat exchange is difficult to be recycled and reused on the production line, but can only be used as domestic hot water or directly discharged, resulting in a great waste of energy

Images