Dry quenching furnace with inclined pre-storage gas flow passages and annular pre-storage chamber and working method

Abstract

The invention relates to a dry quenching furnace with inclined pre-storage gas flow passages and an annular pre-storage chamber and a working method thereof. According to the dry quenching furnace andthe working method thereof, the pre-storage chamber is the annular pre-storage chamber which is composed of an upper inner annular wall, an upper outer annular wall, a lower inner annular wall and alower outer annular wall; a cooling chamber is arranged below the annular pre-storage chamber; an annular air duct is defined by a cooling chamber outer wall, a top plate, a lower outer annual wall and materials in the cooling chamber; a partition wall is arranged between the cooling chamber outer wall on one side of the annular air duct and the lower outer annual wall; the side, opposite to the partition wall, of the annular air duct is provided with a flow guide wall and a circulating gas outlet; the lower inner annual wall and the top plate above the lower inner annual wall form a lower center cylinder; and in the circumferential direction of the dry quenching furnace, the multiple inclined pre-storage gas flow channels penetrate through the lower inner annual wall and the lower outer annual wall to enable the lower center cylinder to be communicated with the annular air duct. According to the dry quenching furnace, the defect of the structure of a conventional dry quenching furnacecan be overcome, the material distribution segregation is reduced, the high pressure at the top of the pre-storage chamber caused by the materials with large resistance per unit material layer is decreased, and the resistance loss of circulating gas is reduced.

Description

technical field [0001] The invention relates to the technical field of dry quenching furnaces, in particular to a dry quenching furnace with an inclined pre-storage airflow channel and an annular pre-storage chamber and a working method thereof. Background technique [0002] The CDQ furnace is an important energy-saving and environmental protection facility for coking production. It can cool the hot coke pushed out of the coke oven while recovering a large amount of heat energy carried by the coke, and also avoids the water and gas caused by wet coke quenching to the environment. Pollution, so it has been widely used in the field of coking. Coke oven production is cyclical and intermittent, and the coke oven system needs daily regular maintenance (the maximum daily maintenance time of the coke oven machine is 2 hours), so the time and frequency of coke loading into the CDQ furnace for cooling are affected by the coke oven production. On the other hand, the supply of coke in...

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Problems solved by technology

[0007] 1) The corbels 1-8 in the chute section are composed of brick masonry cantilevered layer by layer, because they need to bear the load of the upper masonry, the impact wear of side materials, cooling airflow and material dust under the condition of frequent temperature fluctuations Therefore, it is very easy to be damaged, and the structural strength of the damaged corbel is reduced, which affects the structural stability of the inner ring wall 1-6

[0008] 2) The layer-by-layer cantilevered structure also leads to restrictions on the length and height of the corbels 1-8, resulting in restrictions on the circulation section of the circular air duct 1-5 and the chute mouth 1-9 circulating gas

[0009] 3) The existence of the corbel 1-8 reduces the flow area of ​​the chute opening 1-9, increases the flow rate of the circulating gas at the chute opening 1-9, increases the resistance loss of the circulating gas flowing through and the positive pressure on the top of the pre-storage chamber 1-2. It also makes the chute openings 1-9 more prone to material floating, causing serious blockage of the chute openings 1-9, and further increasing the operating energy consumption of the circulation system

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