Device for a directed introduction of primary combustion air into the gas space of a coke battery
A device for a directed gas routing of primary air into a coke chamber oven is disclosed. The primary air is conducted through the coke chamber top into the gas space of a coke oven battery and is laterally deflected as it enters into the gas space of the coke chamber. Also disclosed is a method for lateral deflection of primary air as it enters into the coke oven chamber, thus improving the distribution of the primary air in the coke oven chamber.
1. A device for the supply of primary combustion air for the combustion of coking gas into a coking chamber of a coke oven of the “Non-Recovery” or “Heat-Recovery” type, comprising:
a coke oven comprising an oven chamber;
an opening in the top of the coke oven chamber;
an air supply system comprising an entry port for the introduction of primary air, the entry port being arranged in the opening in the top of the oven chamber in such a manner that coking gas developed during coking and conducted into a gas-filled space located above the coke cake is brought into contact with the primary air for combustion;
wherein said entry port comprises channels formed therein, said channels having an outflow angle directed outwardly to the opening which is greater than 0°, relative to a perpendicular plumb through the top.
2. The device as defined in claim 1 , wherein the openings located in the top have a U-tube-shaped cover on the upper side of the top.
3. The device as defined in claim 2 , wherein the U-tube-shaped cover comprises a flap or a device that can control and regulate the incoming stream of primary air.
4. The device as defined in claim 2 , further comprising twisting elements or Venturi elements located within the cover for widening the gas stream or increasing the tangential gas velocity component.
5. The device as defined in claim 1 , wherein at least one entry port having channels formed therein is located in the frontal closing coke oven wall above the coke oven door or in the coke oven door, the channels having an outflow angle directed outwardly to the opening which is greater than 0°, relative to a perpendicular plumb through the frontal closing coke oven wall above the coke oven door.
6. The device as defined in claim 1 , wherein apertures are located in the frontal closing coke oven wall above the coke oven door or in the coke oven door, at least one aperture having an outflow angle directed outwardly to the opening which is greater than 0°, relative to a perpendicular plumb through the frontal closing coke oven wall above the coke oven door.
7. The device as defined in claim 1 , wherein the channels have a length vs. diameter ratio greater than 0.8 and smaller than 10.
8. The device as defined in claim 1 , wherein the channels have a length vs. diameter ratio greater than 3.
9. The device as defined in claim 1 , wherein the device for the supply of combustion air is comprised of an ultra-high heat resistant steel, ceramics or silica or fireclay bricks or of a combination of these construction elements.
10. A method for the supply of combustion air for the combustion of coking gas into a coking chamber of a coke oven of the “Non-Recovery” or “Heat-Recovery” type, comprising:
streaming primary air through an entry port positioned in an opening in the top of each oven chamber above the oven such that the coking gas developed during coking is conducted into a gas-filled space existing above the coke cake and brought into contact with the primary air for combustion, wherein:
said entry port having channels formed therein, said channels having an outflow angle directed outwardly to the opening which is greater than 0°, relative to a perpendicular plumb through the top.