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Used to improve so in electrolytic cell gas 2 method and device for obtaining

A SO2, gas technology, used in separation methods, gas treatment, chemical instruments and methods, etc.

Inactive Publication Date: 2017-04-19
SOLIOS ENVIRONNEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This solution is not entirely satisfactory as it requires bulky and expensive installations to separate the fluorinated alumina in the first stage of the process

Method used

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  • Used to improve so in electrolytic cell gas <sub>2</sub> method and device for obtaining
  • Used to improve so in electrolytic cell gas <sub>2</sub> method and device for obtaining
  • Used to improve so in electrolytic cell gas <sub>2</sub> method and device for obtaining

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Embodiment Construction

[0029] Such as Figure 1 to 3 As shown, the present invention involves many reactors 2 1 ,2 2 ,...,2 n Composed of the gas processing center 1, in the reactor, a preferred ascending gas stream 3 that must clear the effluent flows in parallel. First reactor 2 1 Supply a new type of powdery material type of adsorbent, an essentially known type, such as alumina (Al2O3), produced in the silo type of fresh powdery material storage tool 4, and use the distribution tool 14 to distribute to the first A reactor 2 1 , The distribution tool 14 is set in the storage tool 4 and the reactor 2 1 between.

[0030] More precisely, the distribution tool 14 will be of a known type in the reactor 2 1 The storage tool 4 of the powdery material in the dies is connected to the injection tool 7. The distribution tool 14 (for example, a pneumatic conveyor) can be understood to mean that the transportation of the powdery material type adsorbent is carried out according to any tool in the prior art, for ex...

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Abstract

The present invention relates to a method and a device for capturing SO2 present in the gas in the industrial production of aluminum by igneous electrolysis, which is carried out by means of a set of at least two reactors (21, 22, ..., 2n,), Said reactors (21, 22, . The gas stream (3) is contacted to appear in the effluent of the gas stream (3), and each of the at least two reactors (21, 22, ..., 2n,) has the adsorbent in the means (10) for collecting said adsorbent after contact with said gas stream (3), at least one of said reactors (21, 22, . . . , 2n,) has discharge means (11), the said discharge means (11) discharges said adsorbent into at least another one of said reactors (21, 22, ..., 2n,) after said adsorbent has been contacted with said gas stream (3) In the injection tool (16) among them, and, between the discharge tool (11) and the injection tool (16), before the adsorbent reaches the discharge tool (11), the adsorbent The adsorbed SO2 is dissociated after at least one contact with the gas stream (3).

Description

Technical field [0001] The present invention relates to a method for obtaining SO occurring in the gas generated in an electrolytic cell 2 In the method and device, the electrolytic cell is used for the industrial production of aluminum through igneous electrolysis. The method is implemented by a set of at least two reactors connected in parallel and through which a gas flow passes, and at least partly in series to provide powdery material type adsorption agents, especially alumina particles, which can be made by contacting the adsorption agent with the gas flow. Adsorb the effluent present in the gas stream. Background technique [0002] The use of alumina particles in gas treatment reactors is a well-known and effective technology. The reactor is used to adsorb hydrofluoric acid (HF) in the gas released from the electrolytic cell for industrial aluminum production through igneous electrolysis. It is well known that it has a large adsorption surface area (up to 82m 2 / g) alumin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50C25C3/22B01D53/68
CPCB01D53/508B01D53/685C25C3/22B01D2253/104B01D2257/2047B01D2258/025B01J2219/00038B01J2219/0004B01D53/83B01D2257/302B01D53/12
Inventor 埃尔-哈尼·鲍哈比拉西埃里·马拉德
Owner SOLIOS ENVIRONNEMENT
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