Top combustion type hot blast stove

By arranging guide components and non-uniform cross-section grid holes in the top-fired hot blast stove, the problem of uneven cold air distribution is solved, and the heat exchange efficiency of the heat storage body and the overall performance of the hot blast stove are improved.

CN120591482APending Publication Date: 2025-09-05SINOSTEEL EQUIP & ENG
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Patent Information

Application Number
CN202510976209.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-15
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

In traditional top-fired hot blast furnaces, the airflow distribution is uneven when the cold air enters the heat storage chamber, resulting in poor hot air heating effect, affecting thermal efficiency and energy utilization.

Method used

A flow guide component is set in the cold air chamber to change the flow direction of the cold air, and grid holes with non-uniform cross-sections are set on the heat storage body to ensure uniform distribution of the cold air. The combined design of the flow guide component and the grid holes improves the uniformity of the airflow.

Benefits of technology

The uniformity of the air flow in the cold air chamber is improved, the heat exchange efficiency of the heat storage body is improved, and the thermal efficiency of the hot air furnace and the stability of the air supply temperature are enhanced.

✦ Generated by Eureka AI based on patent content.
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Abstract

A flow guide part is arranged in a furnace body and can change the flow direction of most airflow at a cold air inlet, so that the cold air flow flows at a preset angle with the radial direction, the airflow can be uniformly distributed in a cold air chamber, and the phenomenon that the airflow is intensively distributed in the middle of the cold air chamber in the prior art is improved. Meanwhile, in consideration of the phenomenon that the circumferential airflow is possibly concentrated after the flow direction of the cold air flow is changed, the lattice holes of the heat accumulator are further arranged to be in a non-uniform-section mode, and the through-flow area of the second lattice holes far away from the center axis is smaller than that of the first lattice holes close to the center axis; in this way, airflow in the circumferential area of the cold air chamber can be forced to flow to the middle area of the cold air chamber, air distribution of the cold air chamber is uniform, the uniformity of airflow entering the heat storage chamber is improved, and the overall heat exchange efficiency of the heat storage body is improved.
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