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High-temperature reaction device and graphene material production system

A high-temperature reaction and silo technology, applied in the chemical industry, can solve problems such as insufficient atmosphere control, difficulty in controlling the reaction time, and incomplete reaction

Active Publication Date: 2016-10-12
湖北高地石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, spray pyrolysis cannot be used for difficult-to-disperse systems or sensitive solvents, and spray pyrolysis has insufficient control over the atmosphere; and trolley furnaces, kilns or box furnaces often have material layers that cannot fully contact with the atmosphere, and the reaction is incomplete , the reaction time is difficult to control well, and the above-mentioned devices all need to be reacted in batches and cannot be produced continuously

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: rapid pyrolysis in high temperature inert atmosphere.

[0057] The feed bin 21 is opened, and the powder material to be pyrolyzed is added into the feed bin 21 . Then the silo 21 is evacuated, and then the inert gas required by the system is blown in from the discharge port 221 of the discharge machine 22 and the air inlet of the silo 21 . Reciprocate 2-3 times to complete the atmosphere replacement of the system.

[0058] Then turn on the high-temperature tube furnace and begin to heat up to the specified temperature required for the reaction. After the specified temperature is reached, the water inlet and outlet of the cooling mechanism 42 are opened to reduce the outlet gas temperature of the high-temperature tube furnace to an acceptable range.

[0059] Then turn on the air source 11, pass the air flow into the system through the air flow control module 12 to make the air flow stable, and purge the residual air in the system for a certain period of time...

Embodiment 2

[0062] Embodiment 2: reflux heating in a high-temperature oxidizing atmosphere.

[0063] The feed bin 21 is opened, and the powder material to be pyrolyzed is added into the feed bin 21 . Then the silo 21 is evacuated, and then the oxidizing atmosphere required by the system is blown into from the discharge port 221 of the vibrating feeder and the air inlet of the silo 21 . Reciprocate 2-3 times to complete the atmosphere replacement of the system. Then turn on the high-temperature tube furnace and begin to heat up to the specified temperature required for the reaction. After reaching the specified temperature, open the inlet and outlet water of the water-cooled finned tube to reduce the outlet gas temperature of the high-temperature tube furnace to an acceptable range.

[0064] Then turn on the air source 11, pass the airflow into the system through the airflow control module 12 to stabilize the airflow, and purge the residual air in the system for a certain period of time ...

Embodiment 3

[0067] Example 3: Rapid pyrolysis in high temperature inert atmosphere

[0068] Open the feed bin 21, add the powder material to be pyrolyzed into the feed bin 21, and close the discharge port 221 of the screw feeder. Immediately begin to evacuate feed bin 21. Gradually open the discharge port 221 of the screw feeder to fill the entire silo 21 with inert gas; then recirculate the process of closing the discharge port 221-vacuumize-introduce the inert gas, repeat 2~3 times, and complete the silo 21 Change the atmosphere inside.

[0069] At the same time, start to pass inert gas into the whole system except the silo 21 through the gas control unit 1 for purging for 5-30 minutes, and the time can be extended appropriately according to the required cleanliness, so that the whole system can be transformed into an inert gas environment. After the purging is completed, the air flow control module 12 is adjusted to reduce the air flow and maintain a continuous small air flow.

[00...

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Abstract

The invention discloses a high-temperature reaction device which comprises a gas control unit, a powder control unit, a high-temperature reaction unit and a receiving unit. The gas control unit controls the speed of gas flow at an inlet of the high-temperature reaction unit. The powder control unit controls the speed of powder entering the air flow. The receiving unit communicates with an outlet of the high-temperature reaction unit to carry out gas-solid separation on reacted materials. Compared with the prior art, the high-temperature reaction device can achieve high-temperature atmosphere continuous heat treatment for powder materials. The gas control unit can adjust the air intake amount in the whole process and then controls the heated time of the powder in the high-temperature reaction unit. After the reaction, the powder enters the receiving unit, receiving is achieved without halting or cooling, and continuous reaction is achieved. In addition, gas generated after the reaction is finished can be rapidly separated from the powder materials through the receiving unit, side reaction can be avoided, and the purity of the powder materials is further improved. The invention further discloses a graphene material production system.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a high-temperature reaction device. In addition, the present invention also relates to a graphene material production system having the above-mentioned high-temperature reaction device. Background technique [0002] During the preparation, production, processing or modification of many powder materials, higher temperatures are often required to promote the reaction, and sometimes a specific atmosphere is required to protect the powder materials from oxidation or to make the atmosphere and powder materials react. [0003] In the traditional way, high-temperature and high-speed pyrolysis of soluble or easily dispersible systems can be achieved by spray pyrolysis and other methods. Or use trolley furnace, kiln or box furnace to carry out high-temperature atmosphere reaction in batches. However, spray pyrolysis cannot be used for difficult-to-disperse systems or sensitiv...

Claims

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Application Information

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IPC IPC(8): C01B31/04
CPCB01J6/008C01B32/184B01J19/0006B01J19/0013B01J2219/00051B01J2219/00162B01J2219/00164
Inventor 张麟德
Owner 湖北高地石墨烯科技有限公司
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