A steam mixing system and method based on multi-stage heat exchange and self-power supply

The multi-stage heat exchange and self-powered steam mixing system solves the problems of insufficient thermal energy utilization and high external power consumption in existing steam mixing systems, achieving efficient and stable steam output, and is suitable for industrial scenarios such as food processing, chemical synthesis and textile printing and dyeing.

CN122643913APending Publication Date: 2026-08-28GUANGZHOU INST OF ENERGY CONVERSION CHINESE ACAD OF SCI +1
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Patent Information

Application Number
CN202611011053.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-08
Publication Date
2026-08-28

AI Technical Summary

Technical Problem

Existing steam mixing systems suffer from insufficient cascade utilization of thermal energy, rely on external power equipment for the mixing process, have high operating energy consumption, and exhibit unstable output parameter control, making it difficult to meet process requirements.

Method used

The steam mixing system employs multi-stage heat exchange and self-powered operation, including a high-temperature steam generation module, a high-temperature heat pump module, a multi-stage heat exchange module, a mixing module, and a control module. It preheats the low-temperature working fluid with high-temperature steam, generates low-temperature steam using a reverse Carnot cycle, and completes non-powered mixing within the mixing module using an ejector. The control module adjusts the flow rate in real time to maintain a stable output temperature.

Benefits of technology

It improves thermal energy utilization efficiency, reduces external power consumption, and achieves stability and flexibility in steam output parameters, making it suitable for different process requirements.

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Abstract

The application discloses a steam mixing system and method based on multi-stage heat exchange and self-energy supply, and relates to the technical field of steam parameter adjustment and heat energy cascade utilization. The system comprises a high-temperature steam generation module, a high-temperature heat pump module, a multi-stage heat exchange module, a mixing module and a control module. The high-temperature steam generation module outputs high-temperature steam. A preheating heat exchanger of the multi-stage heat exchange module preheats a to-be-processed working medium. The high-temperature heat pump outputs low-temperature steam through an inverse Carnot cycle. A built-in ejector in the mixing module completes two-way steam mixing to generate medium-temperature steam by relying on the kinetic energy of the high-temperature steam. The control module monitors the steam temperature in real time and adjusts two-way flow control valves to stabilize the output. The system can be additionally provided with a flash evaporator or a terminal superheating heat exchanger to change the steam working condition and be matched with a corresponding operation method. The system is suitable for industrial scenes, such as food processing, chemical synthesis and textile printing and dyeing, which need stable medium-temperature steam, can recycle high-temperature waste heat to improve the heat energy utilization rate, and can save mixed power equipment to reduce operation energy consumption.
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