A new dry dedusting ash conveying system pipe equipment

By adopting ash conveying bends and nitrogen-assisted blowing technology in blast furnace smelting, the problem of easy clogging of dry dust at low temperatures was solved, realizing smooth conveying of dust and safe and efficient ash cleaning operation, and reducing labor and material costs.

CN224513533UActive Publication Date: 2026-07-17ZHONGTIAN IRON & STEEL GRP (NANTONG) CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGTIAN IRON & STEEL GRP (NANTONG) CO LTD
Filing Date
2025-05-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During blast furnace smelting, dry dust removal ash is prone to clogging intermediate tanks and silo pumps under low temperature conditions, resulting in frequent dust removal work, increasing labor costs and workload, which is difficult to solve effectively with existing technologies.

Method used

A novel dry dust removal and ash conveying system pipeline equipment is designed, which adopts ash conveying bends, hydraulic ball valves and nitrogen-assisted blowing technology. The 90° bends in the ash conveying bends and the 0.7 MPa nitrogen pressurization and blowing ensure smooth flow of dust and reduce blockage.

Benefits of technology

It simplifies the disassembly and installation process, reduces the probability of blockage, improves operational safety, reduces manpower and material consumption, and lowers the difficulty and cost of dust removal work.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224513533U_ABST
Patent Text Reader

Abstract

The application relates to a novel dry dedusting and ash conveying system pipeline equipment and relates to the field of blast furnace smelting technology. The equipment comprises a dry dedusting bin and a total ash conveying pipe. A manual ball valve is arranged at an ash outlet of the dry dedusting bin. A liquid-driven upper ball valve is communicated below the manual ball valve. A liquid-driven lower ball valve is arranged on the side, away from the manual ball valve, of the liquid-driven upper ball valve. The liquid-driven lower ball valve is communicated with the total ash conveying pipe. An ash conveying elbow pipe is arranged between the liquid-driven upper ball valve and the liquid-driven lower ball valve. Nitrogen blowing assisting pipes are communicated with the side wall of the ash conveying elbow pipe. The application has the effect of improving the problem that the existing blast furnace smelting needs to remove the bin pump for ash removal work, and the work load and labor cost are large.
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Claims

1. A ducting equipment for a new dry dedusting ash conveying system, characterized in that: The system includes a dry dust collection chamber (1) and a main ash conveying pipe (8). A manual ball valve (2) is installed at the ash outlet of the dry dust collection chamber (1). A hydraulic upper ball valve (3) is connected below the manual ball valve (2). A hydraulic lower ball valve (7) is installed on the side of the hydraulic upper ball valve (3) away from the manual ball valve (2). The hydraulic lower ball valve (7) is connected to the main ash conveying pipe (8). An ash conveying bend (6) is installed between the hydraulic upper ball valve (3) and the hydraulic lower ball valve (7). A nitrogen-assisted blowing pipe (5) is connected to the side wall of the ash conveying bend (6).

2. A ducting equipment for a novel dry dedusting ash conveying system according to claim 1, characterized in that: The ash conveying bend (6) is bent at 90°.

3. A ducting equipment for a novel dry dedusting ash conveying system according to claim 1, characterized in that: The nitrogen blowing tube (5) has a size of φ40.

4. A ducting equipment for a novel dry dust removal ash conveying system according to claim 1, characterized in that: The hydraulic upper ball valve (3) has a size of 200mm, and the hydraulic lower ball valve (7) has a size of 150mm.

5. A ducting equipment for a novel dry dust extraction ash conveying system according to claim 1 characterized in that: A nitrogen-assisted blowing valve (10) is installed on the main ash conveying pipe (8).

6. A ducting equipment for a novel dry dust extraction ash conveying system according to claim 1 characterized in that: The main ash conveying pipe (8) is equipped with an ash conveying tee pipe (9), which is connected to the hydraulic lower ball valve (7).

7. A ducting equipment for a novel dry dust removal ash conveying system according to claim 1 characterized in that: The ash conveying bend (6) is connected to the hydraulic upper ball valve (3) and the hydraulic lower ball valve (7) via a flange (4).

8. A ducting equipment for a novel dry dust removal ash conveying system according to claim 1 characterized in that: The opening of the ash conveying bend (6) near the hydraulic upper ball valve (3) is flared.