Multi-stage preheating system for cement pre-decomposition kiln

By introducing a multi-stage preheating system into the cement precalciner, multi-stage gradient heat exchange and automatic impurity removal of high-temperature flue gas are achieved, solving the problem of insufficient waste heat utilization in traditional equipment and improving waste heat recovery efficiency and system stability.

CN122408464APending Publication Date: 2026-07-17JILIN JINYU JIDONG EP TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN JINYU JIDONG EP TECH CO LTD
Filing Date
2026-06-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional cement precalciner kilns lack multi-stage gradient heat exchange structures, which makes it difficult to fully utilize the waste heat of high-temperature flue gas, resulting in significant heat loss.

Method used

A multi-stage preheating system is adopted, including a multi-stage heat exchange mechanism and a self-filtration and cleaning mechanism. Through the coordinated operation of multi-stage heat exchange and self-filtration and cleaning, multi-stage gradient heat exchange between materials and high-temperature flue gas is achieved. Components such as rotating discs and scrapers are set up to automatically clean impurities and avoid clogging of the filter structure.

Benefits of technology

It improves waste heat recovery efficiency, reduces heat loss, ensures clean high-temperature flue gas, reduces manual maintenance costs, and enhances system operation stability and energy-saving effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a multistage preheating system for a cement predecomposition kiln, which comprises a base and a storage cylinder, the storage cylinder is fixedly arranged on the top of the base through a support, and relates to the technical field of preheating of decomposition kilns. The multistage preheating system for the cement predecomposition kiln is provided with a multistage heat exchange mechanism and a self-filtering and cleaning mechanism, so that the device can be preheated in multiple stages through the cooperation of the multistage heat exchange mechanism and the self-filtering and cleaning mechanism, the high-temperature flue gas heat of the decomposition kiln can be fully utilized, the heat loss is reduced, the waste heat recovery efficiency is improved, the high-temperature flue gas of the decomposition kiln can be filtered through the self-filtering and cleaning mechanism, the high-temperature flue gas is ensured to be clean, the filtering surface of the conical filter screen frame can be cleaned in real time at the same time, the high-temperature flue gas is ensured to be filtered smoothly, and the system operation is prevented from being affected by the blockage of the filtering structure.
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