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High-purity hydrogen selenide purification process utilizing carbon nanotubes

A carbon nanotube, hydrogen selenide technology, applied in the direction of binary selenium/tellurium compounds, etc., can solve the problems of hydrogen sulfide adsorbent deactivation and difficult removal, and achieve the effect of reducing pressure drop and improving purification effect.

Inactive Publication Date: 2020-12-29
SUZHOU JINHONG GAS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The properties of hydrogen sulfide are close to those of hydrogen selenide, and it is difficult to remove it below 10ppm by conventional distillation
When using traditional hydrogen sulfide adsorbents for adsorption, because t

Method used

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  • High-purity hydrogen selenide purification process utilizing carbon nanotubes

Examples

Experimental program
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Example Embodiment

[0019]Example 1:

[0020]A purification process of high-purity hydrogen selenide using carbon nanotubes includes the following steps:

[0021]S1. Lead the hydrogen selenide raw material into the primary distillation tower in liquid form for preliminary distillation;

[0022]S2, the hydrogen selenide material after preliminary distillation in step S1 is introduced into the secondary distillation tower for secondary distillation;

[0023]S3. Pass the hydrogen selenide material after the second rectification in step S2 through the adsorption column in gaseous form, and the adsorption column is filled with a mixture of carbon nanotubes and activated carbon for adsorption treatment;

[0024]S4. The hydrogen selenide material after the adsorption treatment in step S3 is pressurized to 1.5Mpa through the pressure treatment of the compressor, cooled to -10°C, and stored in the storage tank through cooling and liquefaction. Finally, the filling pipeline is used Fill it up.

[0025]Wherein, the working conditi...

Example Embodiment

[0027]Example 2:

[0028]A purification process of high-purity hydrogen selenide using carbon nanotubes includes the following steps:

[0029]S1. Lead the hydrogen selenide raw material into the primary distillation tower in liquid form for preliminary distillation;

[0030]S2, the hydrogen selenide material after preliminary distillation in step S1 is introduced into the secondary distillation tower for secondary distillation;

[0031]S3. Pass the hydrogen selenide material after the second rectification in step S2 through the adsorption column in gaseous form, and the adsorption column is filled with a mixture of carbon nanotubes and activated carbon for adsorption treatment;

[0032]S4. The hydrogen selenide material after the adsorption treatment in step S3 is pressurized to 1.5Mpa through the pressure treatment of the compressor, cooled to -10°C, and stored in the storage tank through cooling and liquefaction. Finally, the filling pipeline is used Fill it up.

[0033]Wherein, the working conditi...

Example Embodiment

[0035]Example 3:

[0036]A purification process of high-purity hydrogen selenide using carbon nanotubes includes the following steps:

[0037]S1. Lead the hydrogen selenide raw material into the primary distillation tower in liquid form for preliminary distillation;

[0038]S2, the hydrogen selenide material after preliminary distillation in step S1 is introduced into the secondary distillation tower for secondary distillation;

[0039]S3. Pass the hydrogen selenide material after the second rectification in step S2 through the adsorption column in gaseous form, and the adsorption column is filled with a mixture of carbon nanotubes and activated carbon for adsorption treatment;

[0040]S4. The hydrogen selenide material after the adsorption treatment in step S3 is pressurized to 1.5Mpa through the pressure treatment of the compressor, cooled to -10°C, and stored in the storage tank through cooling and liquefaction. Finally, the filling pipeline is used Fill it up.

[0041]Wherein, the working conditi...

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Abstract

The invention discloses a high-purity hydrogen selenide purification process using carbon nanotubes, which comprises the following steps: S1, introducing a hydrogen selenide raw material into a primary rectifying tower in a liquid form, and carrying out preliminary rectification; s2, introducing the hydrogen selenide material subjected to primary rectification in the step S1 into a secondary rectification tower, and carrying out secondary rectification; s3, enabling the hydrogen selenide material subjected to secondary rectification in the step S2 to pass through an adsorption column in a gaseous form, filling the adsorption column with a mixture of carbon nanotubes and activated carbon, and performing adsorption treatment; and S4, pressurizing the hydrogen selenide material subjected to adsorption treatment in the step S3 to 1.5 Mpa through pressurizing treatment of a compressor, cooling to -10 DEG C, cooling, liquefying, storing into a storage tank, and finally filling by utilizing afilling pipeline. According to the process disclosed by the invention, the separation of hydrogen selenide and hydrogen sulfide is realized by regulating and controlling the pipe diameter of the carbon nano tube, and a high-purity hydrogen selenide material can be obtained.

Description

technical field [0001] The invention relates to the technical field of hydrogen selenide purification, in particular to a high-purity hydrogen selenide purification process using carbon nanotubes. Background technique [0002] As a renewable energy source, solar energy is inexhaustible, and photovoltaic technology, which converts solar energy into electrical energy, has been widely used as a way to obtain and use solar energy. From 2000 to 2016, the global cumulative installed capacity has soared from 1250MW to 304300MW. Under the trend of the global greenhouse effect becoming more and more serious, the growth potential of the solar photovoltaic industry is very huge. [0003] Electronic-grade hydrogen selenide, as the key basic raw material for preparing the key CIGS light-absorbing layer in solar cells, plays an irreplaceable role in inorganic solar thin-film cells. In the preparation process of solar cells, sulfur element is used as a small number of semiconductor doping...

Claims

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Application Information

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IPC IPC(8): C01B19/04
CPCC01B19/04
Inventor 金向华高如天王新喜孙猛
Owner SUZHOU JINHONG GAS CO LTD
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