Coke oven
coke oven
The main thermal device for coking.
Structure: Modern coke ovens are composed of carbonization chamber, combustion chamber, regenerator, chute area, furnace top, foundation, flue, etc. The coal material in the carbonization chamber is heated and turned into coke under air-isolated conditions. A coke oven has dozens of carbonization chambers and combustion chambers arranged alternately, separated by refractory materials (silica bricks). Each combustion chamber has 20 to 30 vertical fire channels. The preheated gas from the regenerator (high calorific value gas is not preheated) and air meet and burn at the bottom of the vertical fire channel, providing heat to the carbonization chamber from the side. The regenerator is located in the lower part of the coke oven and uses high-temperature exhaust gas to preheat the gas and air used for heating. The chute area is the inclined channel connecting the regenerator and combustion chamber. The furnace body above the carbonization chamber and combustion chamber is called the furnace top, and its thickness is determined according to the strength of the furnace body and the need to reduce the surface temperature of the furnace top. There are coal loading holes and rising pipe holes in the furnace top area leading to the carbonization chamber, which are used to load coal materials and discharge the waste gas generated during the carbonization of coal materials. There are also fire holes leading to each fire channel for temperature measurement and flame inspection. The temperature and pressure can be adjusted based on the test results. The entire coke oven is built on a solid and flat concrete foundation. Each regenerator is connected to the flue through a waste gas tray. The flue is located in the foundation or on both sides of the foundation, and one end is connected to the chimney.