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Process and equipment for continuously preparing nano carbon ball

A process method and technology of nano-carbon spheres, applied in the field of continuous production of nano-carbon spheres and devices, to achieve uniform particle size, rich raw material sources, and good dispersion

Active Publication Date: 2011-06-08
乌鲁木齐西峰合创石油化工有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a process method and device for continuous production of carbon nanospheres, which solves the problem of continuous gas-phase production of nano-carbon materials in cracking furnace cracking reactions, and is suitable for a variety of low-cost industrial carbon raw materials, and utilizes raw materials to produce heat energy. Meet the furnace temperature requirements of the reaction, thereby reducing power consumption, saving production costs, and realizing industrial continuous low-cost production of carbon nanospheres

Method used

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  • Process and equipment for continuously preparing nano carbon ball
  • Process and equipment for continuously preparing nano carbon ball
  • Process and equipment for continuously preparing nano carbon ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: take coal tar as the embodiment of the nano-carbon spheres of raw material production,

[0028] like figure 1 In the shown device, the inner diameter of heating furnace 1 is 40cm, the outer diameter is 100cm, and the length is 100cm; the middle connecting pipe is 2cm, the inner diameter is 20cm, the outer diameter is 60cm, and the length is 100cm. 40cm, with an outer diameter of 100cm and a length of 300cm. The catalyst inlet 10 is located on the horizontal axis furnace wall of the cracking reactor, 5 cm away from the front end of the cracking reactor. Auxiliary agent inlet 11 is located on the horizontal axis furnace wall of the cracking reactor, 45cm away from the front end of the cracking reactor. The protective gas inlet 12 is located at the top of the intermediate pinch tube 2, 20 cm away from the front end of the intermediate pinch tube. There are three thermometers 13, which are respectively located at the top of the heating furnace and the top o...

Embodiment 2

[0030] Embodiment 2: take heavy aromatics as the embodiment of the carbon nanospheres that raw material produces,

[0031] With the device of embodiment 1, take natural gas as fuel and inject into heating furnace together with air, heavy aromatic hydrocarbon is carbon raw material with 2300m 3 h -1 The flow rate is sprayed into the heated cracking reaction furnace under the pressure of 1.2MPa, and the catalyst and auxiliary agent are sprayed into the cracking furnace at the same time. The catalyst injection pressure is 2.8MPa, and the flow rate is 2.0kg·h -1 , the auxiliary agent has a pressure of 2.3Mpa and a flow rate of 2200ml·h -1 , the raw materials in the cracking reaction furnace are separated and diluted with natural gas and nitrogen, and cracked at a reaction temperature of 1180-1190°C. The gas-solid separation is carried out by the separator, and the parameters of the electron microscope photo of the obtained nano-carbon sphere products are shown in image 3 .

Embodiment 3

[0032] Embodiment 3: use the device of embodiment 1, take mixed benzene as raw material to produce nano-carbon spheres, how flow control is 2100m 3 h -1

[0033] With the device of embodiment 1, take natural gas as fuel and inject into heating furnace together with air, mixed benzene is carbon raw material with 3000m 3 h -1 The flow rate is sprayed into the heated cracking reaction furnace under the pressure of 3.5MPa, and the catalyst and additives are sprayed into the cracking furnace at the same time. The catalyst injection pressure is 3.5MPa, and the flow rate is 10kg h -1 , the auxiliary agent has a pressure of 3.0Mpa and a flow rate of 3000ml·h -1 , in the pyrolysis reaction furnace, the raw materials are cracked at the reaction temperature of 1040-1080°C under the isolation and dilution conditions of natural gas and nitrogen, and the materials after the cracking reaction are sent to the heat exchanger for heat exchange and cooling to 200-300°C, and then introduced ...

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Abstract

The invention provides a process and equipment for continuously preparing nano carbon ball, wherein carbon-containing raw materials such as aromatic hydrocarbons heavy oil, coal tar, mixed benzene, coke-oven gas, anthracene oil, naphthalene oil, phenol oil, CH4 or C2H2 are applied; natural gas is used as fuel, and combusted with air through a heating stove to provide reaction heat for a cracking furnace; the other part of carbon-containing raw materials flows in a rate of 1000-3000 m3h-1, and is gasified and sprayed into the heated cracking furnace, simultaneously, catalyst and auxiliary agent are sprayed into the heated cracking furnace; raw materials undergo cracking reaction at the reaction temperature with isolation and dilution of protection gas; the product obtained from the cracking reaction is sent to a heat exchanger to be cooled by heat exchange; and solid nano carbon balls are obtained after being separated by a separator. The invention realizes continuous production of nano carbon material from gas by cracking reaction in the cracking furnace, is suitable for the application of a plurality of carbon raw materials with low cost for industry use, and utilizes heat which is by-product of raw materials to meet the need for keeping the reaction furnace temperature, and thus power consumption is reduced, production cost is saved, and nano carbon balls are prepared continuously with reduced cost.

Description

technical field [0001] The invention relates to a process method and a device for producing nano-carbon materials, in particular to a process method and a device for producing nano-carbon spheres by a gas phase method. Background technique [0002] Nano-carbon spheres are nano-carbon materials with a spherical structure. The particle size is on the scale of 1nm-1um. It has excellent chemical stability, electrical conductivity, thermal conductivity and other properties. It has a wide range of uses. Some materials (such as graphite, mesophase carbon microspheres) can shorten the intercalation and deintercalation distance of lithium ions and significantly improve the performance of batteries. Therefore, the realization of industrial-scale production of nano-carbon spheres is of great significance for the application of advanced carbon materials. At present, the methods for preparing nano-carbon spheres mainly include high-energy electron irradiation, arc discharge, ultrasonic t...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 范成伟陈晓红宋怀河李跃丰高利李强黄勇陈志刚
Owner 乌鲁木齐西峰合创石油化工有限责任公司
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