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Preparation method of nano WS2 with fullerene structure, fluidized bed reactor, fluidifying method and applications

A fluidized bed reactor, fullerene structure technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the complex structure of the reactor, long reaction time, ultrafine powder Clogging and other problems, to achieve the effect of improving gas-solid contact efficiency and reaction rate, simple bed type, and sufficient gas-solid contact

Active Publication Date: 2015-04-01
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complex structure of the reactor and long reaction time are the main problems
At the same time, due to the use of filters, the problem of ultrafine powder clogging needs to be further investigated

Method used

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  • Preparation method of nano WS2 with fullerene structure, fluidized bed reactor, fluidifying method and applications
  • Preparation method of nano WS2 with fullerene structure, fluidized bed reactor, fluidifying method and applications
  • Preparation method of nano WS2 with fullerene structure, fluidized bed reactor, fluidifying method and applications

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preparation example Construction

[0050] refer to figure 1 , showing a fullerene structure nano WS of the present invention 2 The process flow chart of the preparation method, the flow chart includes two stages: reduction section I and vulcanization section II. The reduction section I is connected to the vulcanization furnace inlet valve connection pipeline 3-1, the vulcanization furnace inlet valve 3, the vulcanization furnace inlet valve and the vulcanization furnace connection pipeline 3-2, and the vulcanization section II.

[0051] The reduction section I includes a reduction furnace 1-1 and a reducing gas purifier 1-2. The gas inlet of the reduction furnace 1-1 is connected to the outlet of the reducing gas purifier 1-2 through the reduction furnace inlet pipeline 1-3, and the gas outlet of the reduction furnace 1-1 is connected to the inlet of the reducing gas purifier 1-2 through the reduction furnace. Furnace outlet line 1-4 connection. The particle inlet of the reduction furnace 1-1 communicates wi...

Embodiment 1

[0062] Mixed gas of hydrogen and nitrogen (50%H 2 / N 2 ) is the reducing gas. Mix the fresh reducing gas 1-5 with the reducing gas from the outlet of the reducing gas purifier 1-2, and then pass it into the reducing furnace 1-1 through the reducing furnace inlet pipeline 1-3, and the temperature of the reducing furnace 1-1 is 600°C, so that Nano WO 3 Reduction reaction occurs with reducing gas. The tail gas after the reaction enters the reduction gas purifier 1-2 through the outlet pipeline 1-4 of the reduction furnace to remove dust and moisture, and the purified gas returns to the reduction furnace 1-1 to continue the reduction reaction. The residence time of the solid material in the reduction furnace is 60 minutes, and the reduced material is sent to the vulcanization furnace 2-1 for vulcanization reaction. A mixture of hydrogen sulfide, hydrogen and nitrogen (10% hydrogen sulfide and 10% hydrogen, nitrogen as the balance gas) is used as the sulfide gas. After mixing ...

Embodiment 2

[0065] Pure hydrogen is used as reducing gas. Mix the fresh reducing gas 1-5 with the reducing gas from the outlet of the reducing gas purifier 1-2, and then pass it into the reducing furnace 1-1 through the reducing furnace inlet pipeline 1-3, and the temperature of the reducing furnace 1-1 is 600°C, so that Nano WO 3 Reduction reaction occurs with reducing gas. The tail gas after the reaction enters the reduction gas purifier 1-2 through the outlet pipeline 1-4 of the reduction furnace to remove dust and moisture, and the purified gas returns to the reduction furnace 1-1 to continue the reduction reaction. The residence time of the solid material in the reduction furnace 1-1 is 60 minutes, and the reduced material is sent to the vulcanization furnace 2-1 for the vulcanization reaction process. A mixture of hydrogen sulfide, hydrogen and nitrogen (10% hydrogen sulfide and 5% hydrogen, nitrogen as the balance gas) is used as the sulfide gas. After mixing the fresh sulfide g...

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Abstract

The invention relates to a preparation method of nano WS2 with a fullerene structure, a fluidized bed reactor, a fluidifying method and applications. The preparation method comprises two steps of reduction and sulfuration. The invention also relates to a fluidized bed reactor for preparing the nano WS2 with a fullerene structure, by which spherical IF-WS2 with a uniform particle size can be prepared. Compared with the prior art, the preparation method has the advantages that WO3 subjected to reduction is of a porous structure, therefore, the uniform dispersed fluidization of nanoparticles is realized, so that the subsequent sulfuration reaction is greatly shortened, and the purity of products is improved. The fluidized bed reactor is simple in bed type, easy to control and amplify, and applicable to the continuous mass production of inorganic fullerene nanoparticles.

Description

technical field [0001] The invention belongs to the technical field of nano preparation, in particular to a nano-WS with fullerene structure 2 The preparation method, fluidized bed reactor, fluidization method and application of the invention. Background technique [0002] Since the Israeli scientist R.Tenne invented nano-tungsten disulfide with a fullerene structure, the preparation, synthesis and characteristics of transition metal disulfide nanocrystals have become a research hotspot for scholars at home and abroad in recent years. In particular, nano-tungsten disulfide with a fullerene structure has unique layered physical structure characteristics, and is widely used in solar cells, solid lubricants, electronic probes, hydrogen storage materials, superconducting materials, and shock-resistant materials. The use of solid lubricants in the friction process of construction machinery can reduce system energy consumption, reduce material wear and prolong the service life of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/00B82Y30/00B82Y40/00
Inventor 李军朱庆山李洪钟周丽
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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