A biomass waste incineration thermal energy utilization device

By setting up a stepped heat exchange mechanism between the flue gas outlet and the chimney of the incinerator, the heat energy of biomass waste incineration is utilized in stages, solving the problem of waste heat from high-temperature flue gas and improving energy utilization and combustion efficiency.

CN224516797UActive Publication Date: 2026-07-17SHENYANG XINJI DEVELOPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENYANG XINJI DEVELOPMENT CO LTD
Filing Date
2025-10-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, during the biomass waste incineration power generation process, the temperature of the flue gas after heat exchange in the waste heat boiler is still 150-200℃, causing some heat energy to be directly discharged from the chimney, resulting in heat waste.

Method used

A stepped heat exchange mechanism is installed between the incinerator exhaust port and the chimney, including three heat exchange sections: high temperature, medium temperature, and low temperature. These sections are used to exchange heat with fresh air, water, and dry air, respectively. The heat energy in the high-temperature flue gas is utilized in stages through a waste heat boiler.

Benefits of technology

It achieves efficient conversion and utilization of waste heat, with the high-temperature section used for fresh air power generation, the medium-temperature section used for hot water heating, and the low-temperature section used for drying or dehumidification, thereby improving combustion efficiency and reducing the moisture content of the furnace feed.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a biomass waste incineration heat energy utilization device, including a waste heat boiler installed between the flue gas outlet of the incinerator and the chimney. A stepped heat exchange mechanism is provided between the flue gas outlet of the waste heat boiler and the chimney. The stepped heat exchange mechanism includes a flue gas channel arranged in a horizontal direction, and a high-temperature heat exchange section, a medium-temperature heat exchange section, and a low-temperature heat exchange section are arranged sequentially on the flue gas channel. This utility model relates to the field of waste incineration power generation technology, and adopts a stepped utilization technology. A waste heat boiler is installed at the flue gas outlet of the incinerator, and the heat energy in the high-temperature flue gas is recovered and utilized through the waste heat boiler. A stepped heat exchange mechanism is added between the flue gas outlet of the waste heat boiler and the chimney. Through the three-stage heat exchange structure layout, the efficient conversion and utilization of waste heat is achieved.
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