Insulation on the coke oven
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This post was last edited by wangshaobo on 2016-4-16 at 10:49. The insulation layers on most of the waste gas collectors in the coke ovens have fallen off. Apart from a slightly higher ambient temperature, does this have any impact on the heating of the coke ovens? Additionally, the insulation layer of the preheater has also come off – will this affect the heating of the coke oven?
The insulation coating on the exhaust gas valves is used primarily to reduce heat loss from the coke oven and lower the temperature in the operating areas. Insulation is necessary for energy conservation and emission reduction, and it also serves as a criterion for assessing the thermal efficiency of the coke oven
Whether or not the exhaust gas valve is coated with insulation material, the exhaust gas temperature in the small flue is kept between 250 and 450°C (i.e., around 300°C). The temperature of the exhaust gas as it leaves the coke oven remains unchanged, so the amount of heat carried away also stays the same. I think that whether insulation material is used or not, there will be no change in heat loss. Without insulation material, more heat is lost to the flue corridor ； With insulation material, most of the heat is expelled through the chimney. In short, it left the furnace. There is no energy conservation or emission reduction.
The insulation of the exhaust gas valve is primarily intended to reduce heat loss from the coke oven
Heat loss is a factor, and it is also important for optimizing the working environment
The amount of suction that a chimney can generate is related to its height, the density of the hot exhaust gases, and the density of the atmosphere. The temperature of the exhaust gases remains constant as they leave the coke oven, but the temperature at the chimney inlet decreases; as a result, a taller chimney is required for the coke oven.
It has little impact on heating, but your heat consumption will definitely be a bit higher. Additionally, the ambient temperatures in the basement and flue areas are certainly high, creating harsh working conditions for the workers. .
It doesn’t affect the operation of the coke oven; however, the high temperature in the flue corridor creates a harsh operating environment； Many coking plants have openers and closers that lack insulation. After the outer insulation layer of the preheater is removed, it is sufficient to control the temperature of the gas coming out of the preheater; steam consumption increases slightly. The temperature in the basement is already high, so this has no impact on the operation of the coke oven.