High-temperature steam output system based on gradient porous solid waste-based composite phase change material

By designing a gradient porous solid waste-based composite phase change material, the problems of thermal response speed and cycle stability in high-temperature steam output systems were solved, achieving high-efficiency heat transfer rate and stable output, which is suitable for industrial thermal energy management.

CN122083299APending Publication Date: 2026-05-26HUANENG QINBEI POWER GENERATION CO LTD HENAN PROVINCE +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG QINBEI POWER GENERATION CO LTD HENAN PROVINCE
Filing Date
2026-01-09
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing technologies for rapid and stable high-temperature steam output systems, phase change materials have limitations in thermal response speed, cycle stability, and cross-scale heat transfer efficiency, especially in high-temperature environments where they are difficult to meet the requirements for rapid response and stable output.

Method used

A gradient porous solid waste-based composite phase change material is adopted, using modified phosphogypsum or coal-based solid waste cementitious material as the matrix. It combines a negative gradient pore structure design with a nanocomposite phase change filler and is formed by cold sintering technology. High-temperature molten salt is introduced to combine with graphene nanosheets to optimize the steam path, reduce heat loss, and improve thermal conductivity and cycle stability.

Benefits of technology

It achieves rapid and stable output of high-temperature steam, significantly improving heat transfer rate and cycle stability, and providing a new solution for industrial thermal energy management.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a high-temperature steam output system based on a gradient porous solid waste-based composite phase change material. The high-temperature steam output system comprises a steam generator, a high-temperature steam conveying pipeline, a phase change device, a condenser and a steam outlet which are sequentially arranged in the flowing direction of steam. The salt storage tank is connected with the condenser; the phase change device comprises a shell and a phase change body, the phase change body is arranged in the shell and comprises a carrier and a filling body, the carrier wraps the filling body and adopts modified phosphogypsum or a coal-based solid waste cementing material as a base body, and the porosity of the carrier is decreased in a gradient mode in the direction from the steam generator to the condenser. The filling body is formed by compounding a phase change material and a graphene nanosheet. According to the system, modified ardealite or a coal-based solid waste cementing material is used as a matrix, forming is carried out at low temperature through a cold sintering technology, high-temperature phase change damage is avoided, negative gradient pore structure design is innovatively adopted, and the heat transfer rate is remarkably increased.
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