A thermal cycle system and method for supercritical hydrothermal synthesis of nanopowders

Abstract

A thermal cycle system for supercritical hydrothermal synthesis of nanopowders, including: a material delivery unit, a thermal cycle utilization unit, and a post-reaction treatment unit. The present invention also provides a thermal cycle method based on the system, which can make the reactor The high-temperature and high-pressure fluid flowing out of the medium is fully thermally circulated, and provides heat for the unreacted fluid and dry nanoparticles through three-stage heat exchange, so as to realize heat recovery and cascade utilization, and achieve energy level matching as much as possible in the process of heat energy utilization, and Maximize the use of low-grade heat energy, reduce system energy consumption and operating costs, improve system economy and stability, and realize system harmless and resource-based treatment.

Description

technical field [0001] The invention belongs to the technical fields of energy chemical industry, synthetic materials and environmental protection, and particularly relates to a thermal cycle system and method for supercritical hydrothermal synthesis of nano-powder. Background technique [0002] Nanomaterials have unique electrical, thermal, magnetic, optical and mechanical properties. Their applications in electronic information, high-end manufacturing, new energy, green chemicals, life medicine, military technology and other fields have triggered revolutionary technological breakthroughs in their fields. , has a very bright application prospect. [0003] The preparation of nanomaterials is the foundation and core of nanotechnology. At present, the synthesis methods of nanomaterials, such as co-precipitation method, alcohol hydrolysis precipitation method, hydrolysis precipitation method, sol-gel method, solvent evaporation method, and hydrothermal method, have insufficient...

AI Technical Summary

Problems solved by technology

Although this method is also recycling, it generally only performs one-stage heat exchange, which does not meet the standards for energy cascade utilization, and the energy utilization rate is low, and the economy and stability of the system are poor.

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