A large-scale continuous and stable production equipment and method for black phosphorus

A technology for stable production and black phosphorus, applied in the preparation of phosphorus, chemical instruments and methods, products, etc., can solve the problems of high cost and low production efficiency, and achieve the effect of improving yield, production efficiency and output

Active Publication Date: 2021-08-06
广西宝汇佳利投资管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a large-scale, continuous and stable production equipment and method for black phosphorus. The present invention overcomes the problems of low production efficiency and high cost in previous intermittent production such as high-pressure method and ball milling method, and can realize large-scale production of black phosphorus. Large-scale continuous and stable production in batches is conducive to increasing production, reducing costs, and improving production efficiency, which can further promote the development of the black phosphorus industry

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  • A large-scale continuous and stable production equipment and method for black phosphorus
  • A large-scale continuous and stable production equipment and method for black phosphorus
  • A large-scale continuous and stable production equipment and method for black phosphorus

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Effect test

Embodiment 1

[0064] Adopt equipment and production method of the present invention to carry out the production of black phosphorus, heater 62 adopts the mode of burning oil; The ratio of raw material is: red phosphorus: tin: iodine=8:1.5:1; Dolly 5 is in tunnel kiln 1 9 The time of staying in different temperature zones in turn is 0.5h. The heating method of burning oil, the temperature of the middle kiln area will rise rapidly, while the temperature of the kiln areas at both ends will rise slowly, the heat conduction is poor, and the temperature of each kiln area is not easy to control; it is not conducive to the growth of black phosphorus, and the yield is low ( Productivity is 85%), the black phosphorus particle diameter that obtains is uneven, and size difference is bigger, and the ratio of qualified product black phosphorus reaches 80% higher, and high-quality black phosphorus is less.

Embodiment 2

[0066] Adopt equipment and production method of the present invention to carry out the production of black phosphorus, but do not comprise spiral turbulent flow inlet device 7, heater 62 adopts microwave heating mode; The ratio of raw material is: red phosphorus: tin: iodine=9:1.8:15; The time for the trolley 5 to stay in the nine different temperature zones of the tunnel kiln 1 is 1 hour. The present embodiment does not include the spiral turbulent air inlet device 7, the temperature in the tunnel kiln is not uniform, the temperature is unstable, and the obtained black phosphorus particle size is not uniform, which has a certain influence on the yield (yield rate is 75%), and the qualified product is black phosphorus. The proportion of phosphorus is higher at 85%, with less premium black phosphorus.

Embodiment 3

[0068] Adopt equipment and production method of the present invention to carry out the production of black phosphorus, heater 62 adopts electric heating heating mode; The ratio of raw material is: red phosphorus: tin: iodine=10:2:3; Dolly is in 9 different temperature zones of tunnel kiln The time of successive residence was 2 hours. The temperature control is more accurate by means of electric heating. The length of the large-sized black phosphorus prepared can reach 14cm, the yield is high, reaching 95%, and the particle size is relatively uniform. Phosphorus accounts for more than 60% of qualified black phosphorus.

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Abstract

The invention discloses a large-scale, continuous and stable production equipment for black phosphorus. A tunnel kiln, a natural cooling area, an unloading area and a loading area are sequentially connected to form a continuous production line; trolleys move on the production line; the tunnel kiln is divided into There are several areas, each area has the same length, and the length of the trolley is smaller than the length of each area; the front and rear ends of each area are provided with movable sealing partition plates, and the top of each area is provided with an air inlet pipe. There is a spiral turbulent air intake device on the pipe, and the air intake pipe is connected with the heating system to control the temperature in the middle area to be the highest and decrease to both sides. The invention overcomes the problems of low production efficiency and high cost in the traditional high-pressure method, ball milling method and other intermittent production, and can realize large-scale, continuous and stable production of black phosphorus, which is beneficial to increase production, reduce cost, and improve production efficiency. It can further promote the development of black phosphorus industry.

Description

technical field [0001] The invention belongs to the field of black phosphorus production, and in particular relates to a large-scale continuous and stable production equipment and method for black phosphorus. Background technique [0002] Black phosphorus is a black crystal with metallic luster. It has the weakest reactivity among allotropes of phosphorus. It will not ignite in air, so black phosphorus is difficult to prepare. It is generally prepared by heating white phosphorus under high pressure. . Black phosphorus is similar to graphite in appearance, performance and structure. It is black, flaky, and conductive, and the link atoms are in the shape of wrinkled sheets. The phonons, photons and electrons in the layered black phosphorus structure exhibit a high degree of anisotropy, which has great potential application value in electronic thin film and infrared optoelectronics technology. [0003] The preparation of black phosphorus is relatively difficult, and the initi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/04B01J4/00B01J19/00C01B25/02
CPCB01J3/04B01J4/001B01J19/0013C01B25/02Y02P20/141
Inventor 林明印华亮林心洋林心悦吴君茂李友德梁家英杨颜吉
Owner 广西宝汇佳利投资管理有限公司
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