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Rectification device capable of removing plated nickel of filler and conveniently changing filler, and plated nickel removing method

A convenient replacement and rectification technology is applied in the field of rectification devices for removing nickel plating on fillers and rectifying and purifying nickel carbonyl. Guarantee the effect of normal production and recovery of performance

Active Publication Date: 2012-11-21
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor thermal stability of nickel carbonyl, it is easy to decompose when heated. During the rectification process, nickel carbonyl is decomposed and deposited on the rectification packing of the rectification tower, resulting in nickel plating on the rectification packing, which cannot be used, and the rectification packing needs to be replaced frequently.
However, the existing rectification device is not easy to replace the rectification packing, which is time-consuming and laborious, affects normal production, increases production costs, and cannot remove the nickel plating on the packing in the rectification device

Method used

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  • Rectification device capable of removing plated nickel of filler and conveniently changing filler, and plated nickel removing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The outer wall of the rectification section 3 is provided with a heating coil. When the nickel plating of the filler needs to be removed, the heating coil is started to raise the temperature of the nickel-plated filler in the rectification section 3 to 50°C, and the carbon monoxide gas with a pressure of 0.4Mpa is introduced into the In rectification section 3, the nickel plating on the packing is removed by carbonylation, and the volume of the nickel carbonyl liquid in the sample receiver at the outlet of the rectification device does not increase any more. It can be confirmed that the nickel carbonyl has been completely removed, so that the packing can recover its performance and be reused.

Embodiment 2

[0028] A heating coil is installed on the outer wall of rectification section 3. When the nickel plating of the filler needs to be removed, the heating coil is started to raise the temperature of the nickel-plated filler in rectification section 3 to 130°C, and carbon monoxide gas with a pressure of 2.0Mpa is introduced into the In rectification section 3, the nickel plating on the packing is removed by carbonylation, and when the volume of the nickel carbonyl liquid in the sample receiver at the outlet of the rectification device no longer increases, it can be determined that the nickel carbonyl has been completely removed, so that the packing can recover its performance and be reused.

Embodiment 3

[0030] The outer wall of the rectification section 3 is provided with a heating coil. When the nickel plating of the filler needs to be removed, the heating coil is started to raise the temperature of the nickel-plated filler in the rectification section 3 to 90°C, and the carbon monoxide gas with a pressure of 1.2Mpa is introduced into the In rectification section 3, the nickel plating on the packing is removed by carbonylation, and when the volume of the nickel carbonyl liquid in the sample receiver at the outlet of the rectification device no longer increases, it can be determined that the nickel carbonyl has been completely removed, so that the packing can recover its performance and be reused.

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Abstract

The invention provides a rectification device capable of removing the plated nickel of filler and conveniently changing the filler and a plated nickel removing method. The rectification device comprises a reboiler, as well as a cooling section, a rectification section and a liquid holding pot which are orderly arranged from top to bottom, wherein a buffering section is arranged between the cooling section and the rectification section; a heater is arranged outside the rectification section; the buffering section is respectively connected with the cooling section and the rectification section through flanges; and the liquid holding pot is respectively connected with the rectification section and the reboiler through flanges. The plated nickel removing method comprises the steps of: heatingthe filler with the plated nickel, importing carbon monoxide with a certain pressure, and carrying out carbonylation to remove the nickel deposited on the filler so as to restore the usability of thefiller. The rectification device of the invention is not only convenient to change the parts of the rectification tower and the filler, but also can remove the plated nickel on the filler to ensure that the filler can be used continuously, thereby guaranteeing the normal production and reducing the cost.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a rectification device for rectifying and purifying nickel carbonyl, in particular to a rectification device capable of removing nickel-plated fillers and facilitating the replacement of fillers, and the invention also relates to the removal of fillers in the rectification device method of nickel plating. Background technique [0002] Nickel carbonyl is a highly toxic compound, which is flammable, explosive, and easy to decompose when heated. It is used to manufacture high-purity nickel powder, and can also be used in the electronics industry, to manufacture plastic intermediates, and as a catalyst. Carbon monoxide and nickel-containing substances produce crude nickel carbonyl (containing carbonyl iron) at a certain temperature and pressure, and the crude nickel carbonyl is purified by distillation through a rectification tower to obtain nickel carbonyl. Due to the poor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/34
Inventor 王芳镇李朝平刘军位
Owner JINCHUAN GROUP LIMITED