Industrial waste heat and solar energy comprehensive utilization power generation system and method

By coupling a waste heat collector with a solar collector to form an organic Rankine cycle system, the problems of low waste heat recovery efficiency on the surface of metallurgical furnaces and unstable power generation caused by ambient temperature fluctuations have been solved, achieving efficient and stable comprehensive energy utilization.

CN122407330APending Publication Date: 2026-07-17ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the efficiency of waste heat recovery from the surface of furnaces and kilns in the metallurgical industry is low, and fluctuations in ambient temperature lead to unstable power generation. Waste heat and solar energy cannot be utilized in synergy, resulting in low power generation efficiency.

Method used

An organic Rankine cycle system coupled with waste heat collectors and solar collectors is adopted. By combining working fluid flow ratio regulation and solenoid valve group control strategies, the complementary utilization of the two heat sources is achieved, the working fluid temperature at the expander inlet is stabilized, and the power generation efficiency is improved.

Benefits of technology

By utilizing waste heat and solar energy in a cascade manner, the system's adaptability to environmental temperature fluctuations is enhanced, power generation efficiency and stability are improved, and operation and maintenance costs are reduced.

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Abstract

本发明涉及冶金节能技术领域,尤其涉及一种工业余热与太阳能综合利用发电系统及方法,余热利用单元包括设置于高温转动壁面外部的余热集热器,余热集热器的受热端面为多翅片结构,余热集热器的冷却端面连接有盘式换热器;盘式换热器与光能发电单元通过管路连接;盘式换热器与工质循环单元通过管路连接。本发明的优点是:通过有机朗肯循环工质依次流经余热集热器和太阳能集热器,实现两种热源的梯级利用;当环境温度较高、太阳能资源充足时,工质同时吸收余热和太阳热能;当环境温度较低、太阳能不足时,系统自动切换为纯余热回收模式;两种模式协同互补,有效克服了单一热源波动性强、稳定性差的问题,显著提高了能源综合利用效率。
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Citation Information

Patent Citations

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