TiN/C coated lithium tritium orthosilicate breeding agent and preparation method and preparation device system thereof

A tritium breeding agent and coating device technology, applied in the field of nuclear fusion, can solve problems such as low heat transfer, fragility, and cladding material corrosion

Active Publication Date: 2021-01-05
中科南京绿色制造产业创新研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention also has the problem that the lithium titanate ceramic balls are in direct contact with the cladding material during use, which is likely to cause corrosion of the cladding material
[0007] CN108550404A discloses a fluid tritium breeding ceramic composite material, the fluid tritium breeding ceramic composite material is formed by mixing liquid and solid phases, which can eliminate existing The magnetohydrodynamic resistance effect of some liquid metal or molten salt tritium breeders and the cor

Method used

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  • TiN/C coated lithium tritium orthosilicate breeding agent and preparation method and preparation device system thereof
  • TiN/C coated lithium tritium orthosilicate breeding agent and preparation method and preparation device system thereof
  • TiN/C coated lithium tritium orthosilicate breeding agent and preparation method and preparation device system thereof

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Effect test

Embodiment 1

[0064] This embodiment provides a TiN / C coated Li 4 SiO 4 The preparation method of tritium multiplying agent, described preparation method provided in the present invention such as figure 1 Carry out in the shown device system, described preparation method comprises the following steps:

[0065] (1) Spherical Li with a particle size of 0.6mm 4 SiO 4 The particles are in a fluidized state in the protective atmosphere of argon;

[0066] (2) On the basis of continuing in step (1), pass carbon source gas methane into Li 4 SiO 4 In the protective atmosphere where the particles are located, the C-coated Li 4 SiO 4 Particles; the mixing temperature is 700°C, and the mixing time is 30 minutes; the gas flow rate of the carbon source gas is 125mL / min;

[0067] (3) On the basis of continuing the step (1), the titanium source gas and the nitrogen source gas are independently fed into the C-coated Li 4 SiO 4 In the protective atmosphere where the particles are located, the mixin...

Embodiment 2

[0072] This embodiment provides a TiN / C coated Li 4 SiO 4 The preparation method of tritium multiplying agent, described preparation method provided in the present invention such as figure 1 Carry out in the shown device system, described preparation method comprises the following steps:

[0073] (1) Make spherical Li with an average particle size of 0.9mm 4 SiO 4 Particles are in a fluidized state in a protective atmosphere of helium;

[0074] (2) On the basis of continuing in step (1), pass carbon source gas ethane into Li 4 SiO 4 In the protective atmosphere where the particles are located, the C-coated Li 4 SiO 4 Particles; the mixing temperature is 800°C, and the mixing time is 45 minutes; the gas flow rate of the carbon source gas is 160mL / min;

[0075] (3) On the basis of continuing the step (1), the titanium source gas and the nitrogen source gas are independently fed into the C-coated Li 4 SiO 4 In the protective atmosphere where the particles are located, t...

Embodiment 3

[0079] This embodiment provides a TiN / C coated Li 4 SiO 4 The preparation method of tritium multiplying agent, described preparation method provided in the present invention such as figure 1 Carry out in the shown device system, described preparation method comprises the following steps:

[0080] (1) Spherical Li with a particle size of 0.3mm 4 SiO 4 The particles are in a fluidized state in a protective atmosphere of neon;

[0081] (2) On the basis of continuing in step (1), pass carbon source gas ethylene into Li 4 SiO 4 In the protective atmosphere where the particles are located, the C-coated Li 4 SiO 4 Particles; the mixing temperature is 600°C, and the mixing time is 15 minutes; the gas flow rate of the carbon source gas is 85mL / min;

[0082] (3) On the basis of continuing the step (1), the titanium source gas and the nitrogen source gas are independently fed into the C-coated Li 4 SiO 4 In the protective atmosphere where the particles are located, the mixing t...

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Abstract

The invention provides a TiN/C coated Li4SiO4 tritium breeding agent and a preparation method and a preparation device system thereof. The preparation method comprises the following steps: (1) enabling Li4SiO4 particles to be in a fluidized state in a protective atmosphere; (2) on the basis that the step (1) is continuously carried out, mixing the Li4SiO4 particles and carbon source gas to obtainC-coated Li4SiO4 particles; (3) on the basis that the step (1) is continuously carried out, mixing the C-coated Li4SiO4 particles obtained in the step (2), titanium source gas and nitrogen source gas;and (4) carrying out gas-solid separation to obtain the TiN/C coated Li4SiO4 tritium breeding agent. The device system comprises a stock bin, a fluidized bed coating device, a titanium source gasification device, a product collection device and a tail gas treatment device. The corrosion of Li4SiO4 to a cladding material is overcome, and meanwhile, the stability of the lithium-based ceramic tritium breeding agent in a He-H2/H2O environment is improved.

Description

technical field [0001] The invention belongs to the field of nuclear fusion technology, and relates to a preparation method of an advanced lithium-based ceramic tritium multiplier with a core-shell structure, in particular to a TiN / C-coated Li 4 SiO 4 Tritium breeder and its preparation method and preparation device system. Background technique [0002] Nuclear fusion energy has attracted more and more attention from humans due to its advantages of environmental protection, cleanliness, safety, and sustainability. Among them, deuterium-tritium fusion is considered to be one of the most easily realized reactions for humans. Deuterium is abundant in seawater and is very easy to obtain. However, tritium, as a non-naturally occurring isotope of hydrogen, must be obtained through a violent reaction between neutrons and lithium atoms under high temperature and high pressure environments. After decades of development, the current Li 4 SiO 4 Microspheres have been selected as on...

Claims

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Application Information

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IPC IPC(8): C01B33/32G21B1/11
CPCC01B33/325G21B1/11Y02E30/10
Inventor 向茂乔朱庆山郑婕岳芬
Owner 中科南京绿色制造产业创新研究院
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