Coke Oven Water Wall Cleaning - The water wall cleaning of the coke oven is a major heat-receiving part of the boiler, consisting of several rows of steel pipes distributed around the furnace chamber of the coke oven. Its interior is filled with flowing water or steam, which absorbs the heat from the flame of the boiler furnace. Initially designed for cooling rather than heating, the water wall was intended to prevent the furnace from being damaged by high temperatures. Later, due to its excellent heat exchange capabilities, it gradually replaced the steam drum and became the primary heat-receiving part of the coke oven. Inside the furnace chamber, the evaporative heating surface is composed of many parallel pipes. The function of the water wall is to absorb the radiant heat from the high-temperature flame or flue gas in the furnace, produce steam or hot water inside the pipes, and reduce the wall temperature to protect the furnace walls. In large-capacity boilers, the flame temperature inside the furnace is very high, with intense thermal radiation. Up to 40-50% or more of the heat in the coke oven is absorbed by the water wall. In modern water-tube boilers, the water wall serves as the primary evaporative heating surface in the coke oven, except for a few small-capacity ovens.