Multi-air-duct star-shaped air supply device of coke dry quenching oven and method for cooling coke in coke dry quenching oven

Abstract

The invention relates to a multi-air-duct star-shaped air supply device of a coke dry quenching oven and a method for cooling coke in the coke dry quenching oven, wherein a plurality of independent upper air chambers are respectively communicated with ring-shaped air ducts; a plurality of independent lower air chambers are respectively communicated with middle air supply ducts or center air supply ducts, the middle air supply ducts are communicated with a middle funnel cap, and the center air supply ducts are communicated with a center funnel cap; the middle funnel cap and the center funnel cap are arranged in the central part of the coke dry quenching oven from bottom to top in a concentric way; the middle funnel cap is positioned in the middle of an upper cone bucket, the center funnel cap is located at the upper part of the upper cone bucket, and the diameter of the middle funnel cap is larger than that of the center funnel cap; wind control devices are respectively arranged at wind supply pipe inlets of the independent upper air chambers and the independent low air chambers. By means of adopting a star-shaped multi-air-duct form for accurately supplying air in the coke dry quenching oven, all the air ducts are optimized, and local air supply regulation is realized; furthermore, multi-air-duct quantitative air supply is realized in the oven, so that the coke in the coke dry quenching oven is more evenly cooled; the multi-air-duct star-shaped air supply device is also capable of reducing coke drop resistance and improving the support strength of all the air ducts in the coke dry quenching oven.

Description

technical field [0001] The invention relates to the technical field of CDQ furnaces, in particular to a multi-channel star-shaped air supply device for CDQ furnaces and a coke cooling method in CDQ furnaces. Background technique [0002] There are 75t / h, 140t / h, 190t / h and above gas supply devices for CDQ operating in China, and most of the gas supply devices are cross air ducts or straight air ducts. The reasons for the uneven cooling of coke in the CDQ furnace are analyzed, which are mainly caused by the uneven particle size distribution of the coke, the uneven distribution of the coke falling speed and the uneven distribution of the air flow in the entire cross-section of the CDQ furnace. [0003] The gas supply device installed at the bottom of the CDQ furnace has a great influence on the uniformity of coke drop and air distribution in the CDQ furnace. If its structure is conducive to the uniform fall of the coke in the furnace in the circumferential direction, and the ...

AI Technical Summary

Problems solved by technology

[0005] The device adopts the air supply form combining the air supply from the outside to the inside by the peripheral air ring and the air supply from the inside to the outside of the central air cap from the upper part of the furnace body. The uniform distribution in the circumferential direction is conducive to the uniform cooling of the coke in the furnace and improves the cooling performance of the CDQ furnace; however, the fine control of the cooling method of the CDQ furnace is still not achieved, especially the independent adjustment of the local temperature of the CDQ furnace cannot be realized and control

Images