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Thermal circulation system and method for supercritical hydrothermal synthesis of nano powder

A technology of supercritical water and nanopowder, which is applied in the direction of heat generation by non-combustion exothermic chemical reactions, combustion methods, nanotechnology, etc., and can solve the problems of low energy utilization rate, non-conformity to energy cascade utilization, economy and stability Poor performance and other problems, to achieve the effect of easy replacement, solve rapid heating and waste heat utilization, improve system economy and stability

Active Publication Date: 2020-10-16
XI AN JIAOTONG UNIV
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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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  • Thermal circulation system and method for supercritical hydrothermal synthesis of nano powder

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations. The present invention is described in further detail below in conjunction with accompanying drawing:

[0034] see figure 1 , a thermal cycle system and method for supercritical hydrothermal synthesis of nanopowders of the present invention, comprising a material delivery unit, a thermal cycle utilization unit, and a post-reaction processing unit, wherein:

[0035]The material conveying unit includes a material storage tank 1, a high-pressure pump 2, a reducing agent storage tank 3 and a high-pressure pump 2 4, the outlet of the material storage tank 1 is connected to the inlet of the high-pressure pump 1 2 through a pipeline, and the outlet of the reducing agent storage tank 3 is connected to the The inlets of the high-pressure pump two 4 are connected through pipelines. In this embodiment, th...

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Abstract

The invention provides a thermal circulation system for supercritical hydrothermal synthesis of nano powder. The thermal circulation system comprises a material delivery unit, a thermal cycle utilization unit and a reaction post-processing unit. The invention also provides a thermal cycling method based on the system, high-temperature and high-pressure fluid flowing out in a reactor can be sufficiently heat recycled, heat is provided for unreacted fluid and dried nanoparticles through three-stage heat exchange, energy level matching is achieved as much as possible in the utilization process ofheat energy, low-grade heat energy is utilized to the maximum extent, system energy consumption and operation cost are reduced, system economy and stability are improved, and system harmlessness andresource processing are realized.

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 application in electronic information, high-end manufacturing, new energy, green chemical industry, life medicine, military technology and other fields has triggered revolutionary technological breakthroughs in their fields. , has an extremely bright application prospect. [0003] The preparation of nanomaterials is the basis and core of nanotechnology. The current synthesis methods of nanomaterials, such as co-precipitation, alcohol hydrolysis precipitation, hydrolysis precipitation, sol-gel method, solvent evaporation method, hydrothermal method, etc., have insufficient purity. , comp...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00F23G7/06F24V30/00
CPCB22F9/24B82Y40/00F23G7/06F24V30/00
Inventor 王树众张熠姝刘璐王玉珍杨健乔
Owner XI AN JIAOTONG UNIV
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