Dry quenching furnace having novel exhaust structure

Abstract

The invention relates to a dry quenching furnace having a novel exhaust structure. The dry quenching furnace comprises a cooling chamber, a pre-store chamber, an inclined flue channel and an annular wind channel, the inclined flue channel communicated with the annular wind channel are arranged between the cooling chamber and the pre-store chamber, an inclined flue partition wall is arranged in the inclined flue channel; the diameter of the cooling chamber is greater than the diameter of the pre-store chamber, an annular coke barrier wall is arranged at the bottom of the pre-store chamber, and a coke barrier wall support is arranged between the annular coke barrier wall and the inclined flue baffle wall. The dry quenching furnace employs a mode for additionally installing the annular coke barrier wall on the bottom of the pre-store chamber, the coke particles are far from an inlet of the inclined flue channel, so that the phenomenon of the obstruction of the inclined flue channel by the coke can be basically solved, wearing of red coke on the inclined flue baffle wall can be prevented, operation effect and stability of the dry quenching furnace are greatly improved, investment cost is low, and the dry quenching furnace is suitable for reconstruction of newly built dry quenching furnace and the original dry quenching furnace.

Description

technical field [0001] The invention relates to the technical field of coke dry quenching, in particular to a dry quenching furnace with a new exhaust structure. Background technique [0002] At present, the conventional CDQ furnace is mainly composed of an annular air duct, an inclined flue, a pre-storage chamber and a cooling chamber. The pre-storage chamber is located above the cooling chamber, and the red coke is loaded from the top of the pre-storage chamber. Flow; during the process of entering the cooling chamber from the pre-storage chamber, coke particles will naturally accumulate and enter the interior of the inclined flue in large quantities (such as Figure 4 As shown), the air flow space in the inclined flue is partially occupied by coke particles, resulting in nearly double the air flow velocity in the coke layer in the inclined flue (the coke porosity is 0.5), resulting in a large gas pressure drop in the coke layer, and at the same time Excessive air velocity...

AI Technical Summary

Problems solved by technology

[0002] At present, the conventional CDQ furnace is mainly composed of an annular air duct, an inclined flue, a pre-storage chamber and a cooling chamber. The pre-storage chamber is located above the cooling chamber, and the red coke is loaded from the top of the pre-storage chamber. Flow; during the process of entering the cooling chamber from the pre-storage chamber, coke particles will naturally accumulate and enter the interior of the inclined flue in large quantities (such as Figure 4 As shown), the air flow space in the inclined flue is partially occupied by coke particles, resulting in nearly double the air flow velocity in the coke layer in the inclined flue (the coke porosity is 0.5), resulting in a large gas pressure drop in the coke layer, and at the same time Excessive air velocity entrains a large amount of powder coke; in addition, during the downward movement of red coke, it continuously contacts and rubs against the partition wall of the inclined flue, which can cause partial damage or collapse of the partition wall within 2 to 3 years

[0003] In recent years, large-scale CDQ furnaces mostly adopt double inclined flue structure design (such as Figure 5 As shown), that is, a transverse partition wall 9 is added at the entrance of the inclined flue to divide the inclined flue into two parallel flue gas channels; this structure can improve the coke blockage in the inclined flue to a certain extent, and play The role of air flow reduction and reinforcement of the support of the inclined flue partition wall; however, due to the natural accumulation of coke particles, coke particle accumulation will still be formed at the entrances of the two parallel flue gas channels, so the problem of the inclined flue has not been fundamentally solved coke clogging

Images