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Fluidized bed reactor and its application

A fluidized bed reactor and reaction tube technology, applied in chemical instruments and methods, gaseous chemical plating, carbon preparation/purification, etc., can solve the problems of poor back-mixing effect, low mass and heat transfer efficiency of the reactor, and the impact of Yield and other issues, to achieve the effect of easy processing and manufacturing, uniform gas-solid phase contact, and easy maintenance

Active Publication Date: 2017-09-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in many gas-solid phase reactions, such as the preparation process of nano-carbon materials, the existing fluidized bed has the following disadvantages: the reactant gas and carrier gas pass through the reaction zone in the form of plug flow, and the back-mixing effect is poor, resulting in The mass transfer and heat transfer efficiency of the reactor is low, which ultimately affects the yield of the reaction

Method used

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  • Fluidized bed reactor and its application
  • Fluidized bed reactor and its application

Examples

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Effect test

Embodiment 1

[0054] Carbon nanotubes are prepared by chemical vapor deposition, and the reaction equipment adopts figure 1 The fluidized bed reactor shown (the fluidized bed reactor is a variable diameter fluidized bed reactor).

[0055] The catalyst particles of growing carbon nanotubes with a certain particle size are dropped into the gas distribution plate 500 inside the fluidized bed reactor from the inlet pipe 410 of the reaction tube 100; the carrier gas is introduced into the inlet pipe 410 to adjust the carrier gas velocity, Make the catalyst particles on the gas distribution plate 500 form a well-back-mixed vortex fluid in the heating zone of the reaction tube 100; turn on the heating assembly 700, and then add the carbon-containing raw material gas required for chemical vapor deposition into the carrier gas; adjust the gas The flow rate enables continuous fluidization of the generated carbon nanotube particles. Since the density of the generated carbon nanotube particles is smal...

Embodiment 2

[0059] Porous carbon is prepared by pyrolysis, and the reaction equipment adopts figure 1 The fluidized bed reactor shown (the fluidized bed reactor is a variable diameter fluidized bed reactor).

[0060] Put the precursor particles of a certain particle size for preparing porous carbon from the inlet pipe 410 of the reaction tube 100 into the gas distribution plate 500 inside the fluidized bed reactor; feed the carrier gas into the inlet pipe 410 to adjust the carrier gas flow rate , so that the precursor particles on the gas distribution plate 500 can form a vortexized fluid with good back-mixing in the heating area of ​​the reaction tube 100; turn on the heating component 700, and adjust to the reaction temperature of thermal cracking. Since the density of the generated porous carbon particles is lower than that of the precursor particles, the generated porous carbon particles will float to the upper part of the reaction tube 100, but since the diameter of the reaction tube...

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Abstract

The invention discloses a fluidized bed reactor and application thereof, wherein the fluidized bed reactor comprises a reaction tube; a spoiler component is arranged in the reaction tube; the spoiler component comprises a plurality of groups of spoiler blades; the plurality of groups of spoiler blades are fixed inside the reaction tube in the vertical direction. According to the fluidized bed reactor provided by the invention, the spoiler component is additionally arranged inside the reaction tube to perform compelling interference on fluid in the reaction tube to enable the fluid to be back mixed to form a partial vortex, so that gas can be in uniform contact with solid, the mass and heat transfer efficiency of the fluidized bed reactor can be improved, the productivity and the product quality can be further improved; besides, the spoiler component is simple in structure, easy to process and manufacture and convenient to maintain during the use.

Description

technical field [0001] The invention relates to the technical field of reaction equipment, in particular to a fluidized bed reactor and its application. Background technique [0002] Fluidized bed reactor is a reactor that suspends solid particles in gas or liquid and performs gas-solid phase reaction or liquid-solid phase reaction. It is widely used in industrial production and scientific research experiments. At present, in many gas-solid phase reactions, such as the preparation process of nano-carbon materials, the existing fluidized bed has the following disadvantages: the reaction gas and carrier gas pass through the reaction zone in the form of plug flow, and the back-mixing effect is poor, resulting in The mass and heat transfer efficiency of the reactor is low, which ultimately affects the yield of the reaction. Contents of the invention [0003] The invention provides a fluidized bed reactor capable of improving mass and heat transfer efficiency. [0004] To ach...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24C01B32/05B82Y40/00C23C16/442C23C16/26
Inventor 谌春林张建陈翔王新昕
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI