The heating time of the empty furnace is affected by many factors, including the following main factors: (1) the furnace temperature set by the furnace. The higher the furnace temperature setting, the longer the heating time of the empty furnace, and
the closer the temperature setting
The slower the temperature rise of the furnace.
In order to reduce the heat load of the furnace, the purpose of shortening the heating time of the empty furnace can be achieved. (2 sub insulation performance. The better the heat preservation performance of the furnace, the shorter the heating time of the empty furnace, and the longer the contrary. (3) Furnace heating capacity. The larger the heating capacity of the furnace, the shorter the heating time of the empty furnace, and the longer the contrary. Exhaust volume and air volume of the main phase (4) furnace. The larger the exhaust volume and the air volume of the furnace, the longer the heating time of the empty furnace. In the heating stage, when the furnace is washed, there is no solvent and there is no explosion risk. Therefore, under the premise of ensuring that the heat exchanger of the incinerator is not burnt, the air volume of the new air and the exhaust gas of the curing furnace can be reduced appropriately. The heat is related to the heating mode of the furnace. For direct heating curing furnace, because each zone has its own heating system, the heating time of empty furnace is short, generally within 1-2h. For indirect heating curing furnace, because the furnace temperature in each area is heated by the hot air generated by the incinerator, and the increase of the hot air temperature needs a certain time, the heating time of the empty furnace is longer, generally about 2-4h.