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Graphite oxide high-temperature heat treatment reduction device and method capable of achieving continuous production

A high-temperature heat treatment and graphite technology, which is applied in waste heat treatment, chemical instruments and methods, climate sustainability, etc., can solve the problems of inconvenient high-temperature heat treatment and reduction of large quantities of graphite oxide, and achieve stable quality, controllable production, and simple operation Effect

Pending Publication Date: 2020-11-10
深圳石墨烯创新中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a continuous production graphite oxide high temperature heat treatment reduction device and method, to solve the problem that it is inconvenient to carry out continuous and large quantities of graphite oxide high temperature heat treatment reduction in the above-mentioned background technology

Method used

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  • Graphite oxide high-temperature heat treatment reduction device and method capable of achieving continuous production
  • Graphite oxide high-temperature heat treatment reduction device and method capable of achieving continuous production
  • Graphite oxide high-temperature heat treatment reduction device and method capable of achieving continuous production

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Embodiment 1

[0040] Embodiment 1 A kind of graphite oxide high temperature heat treatment reduction device capable of continuous production

[0041] see Figure 1-3, a continuous production of graphite oxide high-temperature heat treatment reduction device, including a pneumatic conveyor 1, a feeding flange 3 and a vertical tube furnace 4. The pneumatic conveyor 1 is made of aluminum alloy and supplies compressed gas with a pressure of 0.2-0.4 MPa. The pneumatic conveyor 1 communicates with the feed flange 3 of the vertical tube furnace 4 through the feed pipe. The materials of inlet flange 3 and outlet flange 5 are both SUS304. The connecting pipe between the pneumatic conveyor 1 and the vertical tube furnace 4 is equipped with a preheater 2, the preheater 2 is a casing heat exchanger, the material is SUS304, and the heat exchange medium is the vertical furnace feeding flange 3 1. Discharge flange 5 or heat exchanger 6 warm water after heat exchange. An insulation layer is provided out...

Embodiment 2

[0043] Embodiment 2 A kind of method of graphite oxide high-temperature heat treatment reduction, utilizes the device described in embodiment 1, specifically comprises the steps:

[0044] 1) First, the vertical tube furnace 4 is evacuated 3 times by a vacuum pump to a pressure of -100kPa, supplemented with inert gas He to a pressure of 20kPa, and the heating rate of the furnace is raised to 1300°C at a heating rate not exceeding 5°C / min;

[0045] 2) Turn on the pneumatic conveyor 1. After the graphite oxide with a size of about 700 mesh is fluidized by the pneumatic conveyor 2, it is sent to the vertical tube furnace 4 through the preheater 2. Under the action of gravity and the pneumatic conveyor 1, Passing through the 4 high temperature zone of the vertical tube furnace from top to bottom, graphite oxide is quickly heated and peeled off into graphene, and a large amount of gas is generated;

[0046] 3) Graphene, a small amount of insufficiently reacted graphite oxide and the...

Embodiment 3

[0049] Embodiment 3 A kind of method of graphite oxide high-temperature heat treatment reduction, utilizes the device described in embodiment 1, specifically comprises the steps:

[0050] 1) First, the vertical tube furnace 4 is evacuated once by a vacuum pump to a pressure of -60kPa, and the inert gas Ar is added to a pressure of 0kPa, and the temperature of the furnace is raised to 800°C at a rate of no more than 5°C / min;

[0051] 2) Turn on the pneumatic conveyor 1. After the graphite oxide with a size of about 30 mesh is fluidized by the pneumatic conveyor 1, it is sent to the vertical tube furnace 4 through the preheater 2. Under the action of gravity and the pneumatic conveyor 1, Passing through the 4 high temperature zone of the vertical tube furnace from top to bottom, graphite oxide is quickly heated and peeled off into graphene, and a large amount of gas is generated;

[0052] 3) Graphene, a small amount of insufficiently reacted graphite oxide and the exhaust gas pr...

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Abstract

The invention discloses a graphite oxide high-temperature heat treatment reduction device and method capable of realizing continuous production, and the device is scientific and reasonable in structure, safe and convenient to use, simple to operate, controllable in production, stable in quality, capable of realizing continuous operation, energy-saving and suitable for industrial mass production. The device and method fill the gap in the field.

Description

technical field [0001] The invention relates to the technical field of graphite oxide high-temperature heat treatment reduction devices, in particular to a graphite oxide high-temperature heat treatment reduction device and method capable of continuous production. Background technique [0002] With the rapid development of the graphene industry in recent years, the industrialization bottleneck of graphene and its related products has become increasingly prominent. Research has shown that graphene can be made by a variety of methods. Among them, the redox method has received a lot of attention from researchers because of its simple equipment, relatively stable quality, and easy realization of large-scale production. The redox method includes two parts: the preparation and reduction of graphite oxide. Graphite oxide is prepared by introducing -OH, C=O, C-O-C and other oxygen-containing groups between graphite layers and edges, and then the oxygen-containing groups are remove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/192F27D7/06F27D17/00F27D3/16
CPCC01B32/192F27D3/16F27D7/06F27D17/004F27D17/008F27D2007/066F27D2017/009Y02P20/10
Inventor 陈晶秦显营罗丹李宝华
Owner 深圳石墨烯创新中心有限公司
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