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Combustion method and device for preparing fullerene in mass

A technology of a combustion device and a combustion method, which is applied in the field of combustion and devices for batch preparation of fullerenes, can solve the problems of poor packing sealing performance, influence on yield, short service life, etc., and meet the needs of high vacuum degree, Extended service life and good sealing performance

Active Publication Date: 2010-02-24
中昊黑元化工研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The currently widely used combustion device for preparing fullerenes in batches, such as the one disclosed in Patent No. 200480015889, includes a hollow base that cooperates with the reaction furnace, a main air pipe and an auxiliary air pipe that are arranged side by side in the base, and are located on the base. The upper mixing chamber, the pressure accumulator, and the gas nozzle installed at the front end of the pressure accumulator are provided with a packing sealing device between the base and the reaction furnace, and the main and auxiliary gas pipes are equipped with inlet joints. Both the chamber and the gas nozzle are located in the reaction furnace; when in use, the fuel gas containing hydrocarbons and the premixed oxygen are sent to the mixing chamber and the pressure storage chamber through the main gas pipe and the auxiliary gas pipe respectively, and then through the gas nozzle, in the reaction furnace The temperature is 1500-2500°C, the ambient pressure in the furnace is 130KPa-200KPa, and the purity of oxygen is about 60% to burn to obtain fullerenes; but in the process of forming a stable flame, due to the fuel gas and preheating Mixed oxygen is difficult to mix evenly, and the temperature and pressure are high, resulting in an unstable combustion reaction, which is prone to flashback or flameout, which cannot guarantee the normal progress of the reaction and affects the yield; under the high temperature generated by combustion, the main gas pipe and auxiliary Metal materials such as air pipes cannot work normally for a long time, and the service life is short; the sealing performance of the packing seal is poor, and it cannot meet the requirements of vacuum degree

Method used

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  • Combustion method and device for preparing fullerene in mass
  • Combustion method and device for preparing fullerene in mass
  • Combustion method and device for preparing fullerene in mass

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The combustion device for preparing fullerenes in batches comprises a hollow base 1, a main air pipe 2 and an auxiliary air pipe 3 which are all installed in the base 1, and a sealing ring 6 is threaded on the base 1, and the sealing ring 6 A sealing gasket 7 is provided; a flow guiding device 8 is provided above the base 1, and a gas passage 9 is arranged in the flow guiding device 8, and the front end of the gas passage 9 is trumpet-shaped; the auxiliary air pipe 3 is set outside the main air pipe 2, A sealing cylinder 10 is provided at the bottom of the auxiliary gas pipe 3, and a gas nozzle 11 located in the gas passage 9 is also installed at the front end of the main air pipe 2. The gas nozzle 11 is provided with several nozzle holes, and the upper end of the auxiliary gas pipe 3 is located in the gas passage 9. , A jacket 12 installed in the base 1 is also provided outside the auxiliary air pipe 3, and a water inlet pipe 13 and a water outlet pipe 14 are provided o...

Embodiment 2

[0022] The combustion device for preparing fullerenes in batches includes a hollow base 1, a main gas pipe 22 and an auxiliary gas pipe 23 that are all installed in the base 1, and a sealing ring 6 is threaded on the base 1, and a sealing ring 6 is installed on the sealing ring 6. A sealing gasket 7 is provided, and a flow guiding device 28 is provided above the base 1. A gas passage 29 is arranged in the flow guiding device 28, and the front end of the gas passage 29 is trumpet-shaped; the auxiliary air pipe 23 is sleeved outside the main air pipe 22, The bottom of the auxiliary air pipe 23 is provided with a sealing cylinder 30, the front ends of the auxiliary air pipe 23 and the main air pipe 22 are all located in the gas nozzle 31, and the gas nozzle 31 is located in the lower section of the gas passage 29. The gas nozzle 31 is provided with several spray holes. The secondary oxygen inlet pipe 19 is also provided outside the trachea; the secondary oxygen inlet pipe 19 is is...

Embodiment 3

[0025]The combustion device for preparing fullerenes in batches includes a hollow base 1, a main air pipe 42 and an auxiliary air pipe 43 that are all installed in the base 1, and a sealing ring 6 is threaded on the base 1, and a sealing ring 6 is mounted on the sealing ring 6. A sealing gasket 7 is provided; a flow guiding device 38 is provided above the base 1, and a gas passage is provided in the flow guiding device 38, and the gas passage includes a main passage located at its lower section, a main passage connecting the main passage and its front end surface and the main passage Several internal passages 39 on its surrounding sides, and several connecting passages 40 connecting its lower end surface and internal passages 39; the auxiliary air pipe 43 is set outside the main air pipe 42, and the bottom of the auxiliary air pipe 43 is provided with a sealing bottom plate 44, The front end of the main gas pipe 42 is also equipped with a gas nozzle 45 located in the main chann...

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Abstract

The invention discloses a combustion method and a device for preparing fullerene in mass. The combustion method comprises the following steps: leading fuel gas and premixed oxygen into a deflector concentrically by a pipeline; and ejecting the fuel gas and the premixed oxygen out for combusting after the fuel gas and the premixed oxygen are mixed in the deflector, wherein temperature in a reactingfurnace is 1500-2500 DEG C, the purity of oxygen in the premixed oxygen is more than 90 percent, and the ambient pressure in the reacting furnace is lower than 10KPa. The combustion device comprisesa hollow base, a main gas pipe and an auxiliary gas pipe which are both arranged in the hollow base; a sealing ring is arranged on the base by threads and is provided with a sealing gasket; the deflector is arranged above the base and is internally provided with a gas channel; the auxiliary gas pipe is sleeved outside the main gas pipe and is provided with a seal barrel or a seal bottom plate at the bottom; a gas nozzle positioned in the gas channel is arranged at the front end of the main gas pipe and is provided with a plurality of nozzle holes; and the upper end of the auxiliary gas pipe ispositioned in the gas channel or the gas nozzle. The invention has the advantage of uniform mixing of the fuel gas and the premixed oxygen, stable combustion and long working time, and improves the yield coefficient and prolongs the service life.

Description

technical field [0001] The invention relates to a combustion method and a device for preparing fullerene in batches. Background technique [0002] The currently widely used combustion device for preparing fullerenes in batches, such as the one disclosed in Patent No. 200480015889, includes a hollow base that cooperates with the reaction furnace, a main air pipe and an auxiliary air pipe that are arranged side by side in the base, and are located on the base. The upper mixing chamber, the pressure accumulator, and the gas nozzle installed at the front end of the pressure accumulator are provided with a packing sealing device between the base and the reaction furnace, and the main and auxiliary gas pipes are equipped with inlet joints. Both the chamber and the gas nozzle are located in the reaction furnace; when in use, the fuel gas containing hydrocarbons and the premixed oxygen are sent to the mixing chamber and the pressure storage chamber through the main gas pipe and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 梁涛范汝新聂绪建于宝林李炳炎楚士晋彭汝芳何平陈正方
Owner 中昊黑元化工研究设计院有限公司