A rotary kiln flue gas waste heat utilization device

By introducing structures such as flue gas guide troughs, guide boxes, and cleaning plates into the rotary kiln flue gas waste heat utilization device, the problem of impurity accumulation is solved, achieving efficient utilization of flue gas waste heat and convenient equipment maintenance.

CN224266791UActive Publication Date: 2026-05-22KUQA HONGSHI CEMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUQA HONGSHI CEMENT CO LTD
Filing Date
2025-06-17
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

The existing rotary kiln flue gas waste heat recovery device fails to effectively treat impurities, causing impurities to accumulate on the inner surface, affecting heat exchange efficiency and increasing maintenance difficulty.

Method used

A rotary kiln flue gas waste heat utilization device was designed, which adopts a structure including a flue gas guide trough, a guide box, a preheating ventilation pipe, a return pipe, and a cleaning plate. Through flue gas guidance and impurity sedimentation, combined with the use of the cleaning plate and a pressure pump, the device achieves centralized removal of impurities and convenient maintenance of the equipment.

Benefits of technology

It effectively centralizes the treatment of impurities, improves heat exchange efficiency, simplifies equipment maintenance, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224266791U_ABST
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Abstract

The application relates to the rotary kiln matching field and discloses a rotary kiln flue gas waste heat utilization device. In the application, the inner surface of a heat exchange cabin is provided with a flue gas guide groove, the outer surface of the heat exchange cabin corresponding to the flue gas guide groove is fixedly connected with a guide box, the outer surface of the guide box is fixedly connected with a preheating ventilation pipe, the outer surface of the preheating ventilation pipe is fixedly connected with a return pipe, the inner surface of the upper end of the heat exchange cabin is fixedly connected with a heat exchange water tank, the inner surface of the side of the heat exchange cabin far from the flue gas guide groove is provided with a cleaning plate, and the outlet at the lower end of the rotary kiln corresponds to the heat exchange cabin. Flue gas is guided out to the guide box through the flue gas guide groove, is collected through extrusion to the preheating ventilation pipe, the overall flue gas with waste heat is extended to the upper end through extrusion and pressurization, the flue gas is preheated to the heat exchange pipe, is flushed into the heat exchange water tank through the return pipe after the upper end, heat exchange is carried out after the flue gas is flushed into, water vapor continues to enter the heat exchange pipe and is guided out, and then the water vapor with waste heat is connected to the equipment needing heating.
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