With the development of carbon production technology, carbon technology has made progress, and the waste heat in the production process of carbon plants can be recovered and utilized. The application of carbon waste heat boiler is of great significance for carbon plants to recover energy, achieve emission reduction and pollution reduction, and protect the environment.

Carbon plant is being introduced Waste heat boiler In the process of equipment recovery of waste heat, attention should be paid to the design parameters of waste heat boiler, including original parameters and boiler parameters. The original parameters shall consider the design of inlet flue gas volume, inlet flue gas temperature and outlet flue gas temperature; Boiler parameters include rated evaporation capacity, superheated steam outlet temperature, superheated steam outlet pressure, drum working pressure and feed water temperature.

After the high-temperature flue gas of the calciner passes through the waste heat furnace to recover the heat, the temperature of the heat medium (heat transfer oil) in the waste heat furnace is heated to about 200 ℃, the heat is carried by the heat transfer oil through the pipeline to each heat consuming equipment, and each heating medium is heated. After heating, the temperature of the heat medium drops to about 180 ℃, and it is heated by the circulating oil pump to the hot oil heating furnace to recover the heat Purpose of heating equipment. According to the heat calculation of each heating equipment in the carbon plant and the calciner transformation plan, the waste heat of the calciner in the carbon plant is gradually recovered in four stages and the heat use process is improved, so as to achieve the purpose of reasonable recovery of waste heat.

The flue gas of each calciner is respectively introduced into the waste heat furnace, and the flue gas enters Waste heat boiler Then, heat exchange is conducted with the heat transfer oil in the furnace tube, and the temperature is reduced from 850~900 ℃ to 300~400 ℃. The total amount of flue gas entering the waste heat furnace is adjusted through the flue gate, and the heat transfer oil is heated to the required temperature. Then, the heat transfer oil enters the water heater to further recover the low-temperature waste heat, and is introduced into the chimney through the induced draft fan for emptying.