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Magnesium electrolysis chlorine purification process

A purification process, magnesium electrolysis technology, applied in electrolysis process, electrolysis components, chemical instruments and methods, etc., can solve the problems of high acid consumption, system blockage, etc., reduce maintenance costs, realize recycling, and reduce solid content Effect

Active Publication Date: 2021-02-23
PANZHIHUA STEEL ENTERPRISES XINYU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the existing purification process, and provide a magnesium electrolysis chlorine gas purification process, so that the purified chlorine contains chloride dust, acid mist and water to meet the safety production requirements of chlorine gas liquefaction, and realize the magnesium electrolysis chlorine gas After liquefaction, the purpose of recycling chlorine gas is achieved; at the same time, the reliability of the system is improved, and the problems of solid content in circulating sulfuric acid liquid, high acid consumption and system blockage are solved

Method used

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  • Magnesium electrolysis chlorine purification process

Examples

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Effect test

Embodiment 1

[0030] A kind of magnesium electrolysis chlorine purification process, the purification process flow is as follows figure 1 shown, including the following steps:

[0031] (1) Dust removal: Chlorine gas from the anode of the magnesium electrolytic cell, the dust content is 500mg / Nm 3 Left and right; the chlorine gas branch pipe is collected to the chlorine gas main pipe, and then the chlorine gas is 3 The flow rate of / h is sent to the dry dust removal device to remove the dust in the chlorine gas; the dry dust removal device includes a gravity settling box and a bag filter connected in sequence, after the chlorine gas is subjected to gravity dust removal and bag filter, the dust content drops 30mg / Nm 3 about;

[0032] (2) Washing: the chlorine gas after dedusting is sent into the chlorine gas scrubbing combined tower for washing; figure 2 As shown, the chlorine scrubbing combined tower includes a dynamic wave scrubber 1, a washing tower 2 and a sulfuric acid slag discharg...

Embodiment 2

[0038] A kind of magnesium electrolysis chlorine purification process, the purification process flow is as follows figure 1 shown, including the following steps:

[0039] (1) Dust removal: Chlorine gas from the anode of the magnesium electrolytic cell, the dust content is 500mg / Nm 3 Left and right; through the chlorine gas branch pipe, it is collected to the chlorine gas main pipe, and then the chlorine gas is 3 The flow rate of / h is sent to the dry dust removal device to remove the dust in the chlorine gas; the dry dust removal device includes a gravity settling box and a bag filter connected in sequence, after the chlorine gas is subjected to gravity dust removal and bag filter, the dust content drops 30mg / Nm 3 about;

[0040] (2) Washing: the chlorine gas after dedusting is sent into the chlorine gas scrubbing combined tower for washing; the chlorine gas scrubbing combined tower performs dynamic wave washing, empty tower spray washing and packing washing successively to...

Embodiment 3

[0045] A kind of magnesium electrolysis chlorine purification process, the purification process flow is as follows figure 1 shown, including the following steps:

[0046] (1) Dust removal: Chlorine gas from the anode of the magnesium electrolytic cell, the dust content is 500mg / Nm 3 Left and right; through the chlorine gas branch pipe, it is collected to the chlorine gas main pipe, and then the chlorine gas is 950m 3 The flow rate of / h is sent to the dry dust removal device to remove the dust in the chlorine gas; the dry dust removal device includes a gravity settling box and a bag filter connected in sequence, after the chlorine gas is subjected to gravity dust removal and bag filter, the dust content drops 30mg / Nm 3 about;

[0047] (2) Washing: the chlorine gas after dedusting is sent into the chlorine gas scrubbing combined tower for washing; the chlorine gas scrubbing combined tower performs dynamic wave washing, empty tower spray washing and packing washing successive...

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Abstract

The invention discloses a magnesium electrolysis chlorine purification process. The purification process comprises the steps of dust removal, washing, compression, distribution and the like. Combinedwashing operation is set between the dust removal step and the compression step, and a combined defoaming device is arranged before chlorine liquefaction. By adopting the process provided by the invention, the washing and dust removing effects can be ensured, the washing effect after the front-end dry dust removing equipment breaks down can also be ensured, and the process is more reliable. By adopting the process disclosed by the invention, the purified chlorine gas dust and acid mist is less than or equal to 5 ppm, the moisture is less than or equal to 100 ppm, the magnesium electrolytic chlorine gas can be liquefied into liquid chlorine for storage, and the purpose of recycling the chlorine gas is achieved.

Description

technical field [0001] The invention belongs to the technical field of tail gas treatment, and in particular relates to a magnesium electrolysis chlorine gas purification process. Background technique [0002] The chlorine gas produced by the magnesium electrolytic cell of the sponge titanium production enterprise currently has two or more directions. The chlorine gas is mainly directly passed into the chlorination furnace for production after purification; when the chlorination furnace fails, two options are considered to absorb the chlorine gas. . One is to digest and absorb through the current calcium production process, but the current calcium production process has limited digestion and absorption capacity, and the maximum can only receive 150m 3 The amount of chlorine gas per hour, the maximum chlorine gas output of the electrolytic cell is 970m 3 / h, the absorption capacity is limited, and continuous production cannot be achieved, which will cause the magnesium elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D53/14C25B1/26
CPCB01D53/1456C25B1/26B01D50/10
Inventor 蒲荣辉尹文刚石玉英张建安王永明
Owner PANZHIHUA STEEL ENTERPRISES XINYU CHEM