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System for synthesizing nanoparticles through spray combustion

A nanoparticle and spray combustion technology, applied in the burner, combustion type, nanotechnology, etc., can solve the problems of particle residue, particle agglomeration and sintering, low yield, etc., to widen the structure and composition, and reduce agglomeration. and sintering, reducing the effect of deposition

Pending Publication Date: 2021-04-16
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current common experimental-scale spray pyrolysis combustion synthesis nanoparticle device has disadvantages such as particle agglomeration and sintering, residual organic matter on the particle, and low yield due to the single intake channel that limits the oxygen flow rate.

Method used

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  • System for synthesizing nanoparticles through spray combustion
  • System for synthesizing nanoparticles through spray combustion
  • System for synthesizing nanoparticles through spray combustion

Examples

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Effect test

Embodiment 1

[0027] see figure 1 and figure 2 , the spray combustion synthesis nanoparticle system provided in Example 1 of the present invention, the system uses a turbulent burner to form a stable turbulent flame, directly sprays and atomizes the precursor, and cooperates with the dispersed gas to form a combustion atmosphere with different equivalence ratios. The addition of secondary gas supply components can further regulate the growth environment of nanoparticles in the high temperature area, so as to realize the precise control of particle size distribution, appearance size and crystal phase purity of nanoparticles, and greatly expand the structure and composition of particles. Due to the further supplementation of oxygen, the adjustable range of the flow rate of the liquid precursor is greatly increased, which can significantly increase the yield of nanoparticles, and can achieve industrial scale-up of flame nanoparticle synthesis. The liquid precursor is sprayed by a syringe pum...

Embodiment 2

[0038] see image 3 and Figure 4 , the spray combustion synthesis nanoparticle system provided by Example 2 of the present invention, the system uses a turbulent burner to form a stable turbulent flame, directly atomizes the precursor through high-pressure injection, and forms a combustion atmosphere with different equivalence ratios with the assist gas. Adding multiple precursor pipelines can further control the growth environment of nanoparticles in the high-temperature region to achieve precise control of nanoparticle particle size distribution, phase size and crystal phase purity, and can greatly expand the structure and composition of particles . The adjustable range of the flow rate of the liquid precursor has been greatly improved, which can significantly increase the yield of nanoparticles, and can achieve industrial scale-up of flame nanoparticle synthesis. The liquid precursor is sprayed by a high-pressure syringe pump through a capillary needle, and the internal ...

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Abstract

The invention belongs to the related technical field of nano material synthesis, and discloses a system for synthesizing nanoparticles through spray combustion. The system comprises a turbulent burner and an injection pump which are connected with each other, wherein the turbulent burner comprises a first circular tube, a second circular tube, a plurality of gas nozzles, a third circular tube, a fourth circular tube, a capillary needle tube and a movable nozzle; a sheath gas pipeline is arranged between the first circular tube and the second circular tube; the gas nozzles are arranged between the second circular tube and the third circular tube; a premixing gas pipeline is arranged between the third circular tube and the fourth circular tube; an accommodating hole is formed in the fourth circular tube, and the movable nozzle is movably arranged in the accommodating hole; a first dispersion gas pipeline is formed between the movable nozzle and the fourth circular tube; and the capillary needle tube is arranged in the movable nozzle. According to the invention, the structure and components of the particles can be expanded greatly, the adjustable range of the flow velocity of liquid precursors is expanded greatly, the yield of the nanoparticles can be increased remarkably, and industrial amplification of flame nanoparticle synthesis can be achieved.

Description

technical field [0001] The invention belongs to the technical field related to the synthesis of nanomaterials, and more specifically relates to a system for synthesizing nanoparticles by spray combustion. Background technique [0002] Nanomaterials are widely used in catalysis, medicine, materials, electronics and other fields. Due to the unique physical and chemical properties of nanoparticles, their preparation methods have gradually become a focus of attention. Flame spray combustion is a high-throughput nanomaterial synthesis process developed in recent years. Laboratory-scale equipment can achieve a nanoparticle production rate of more than 100 grams per hour. Therefore, this method is very suitable for industrial scale-up for large-scale production. Used to prepare oxide particles of various structures and sizes. [0003] Compared with the traditional wet chemical synthesis method, the flame spray combustion method directly uses the energy of the flame, one-step rapid...

Claims

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Application Information

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IPC IPC(8): F23D14/38F23D14/70C01B13/14C01B13/34B82Y40/00
Inventor 赵海波袁兴徐祖伟
Owner HUAZHONG UNIV OF SCI & TECH
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