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Apparatus for treating gases from electrolytic cells for the production of aluminium

A gas and gas processing technology, applied in the field of devices for processing gas from electrolytic smelting tanks for the production of aluminum

Inactive Publication Date: 2016-11-09
FIVES SOLIOS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires a cooling circuit per smelting tank and requires extensive maintenance operations

Method used

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  • Apparatus for treating gases from electrolytic cells for the production of aluminium
  • Apparatus for treating gases from electrolytic cells for the production of aluminium
  • Apparatus for treating gases from electrolytic cells for the production of aluminium

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Experimental program
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Embodiment Construction

[0027] refer to figure 1 , shows a plant for processing gas from electrolytic smelting cells 2 for the production of aluminum, said smelting cells being located in two parallel trains 3 . Means for trapping the gas are provided for extracting all the gas or selectively extracting the gas from the electrolytic smelting cell 2 . The collecting pipe 5 is the length of the electrolytic smelting tank and collects the gas trapped near the smelting tank. Two connecting pipes 6 provide the connection between the collecting pipes 5, the length of which is the length of the smelting tank 2 and which are positioned transverse to each other. These two connecting pipes 6 are connected together to an intake conduit 7 which brings the gas to a gas treatment center (GTC) 8 .

[0028] In the following, the words "upstream", "inlet", "before", "downstream", "outlet" and "after" are used according to the usual direction of gas circulation from the electrolytic smelting cell 2 to the GTC 8 .

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Abstract

Apparatus for treating gases originating from electrolytic cells (2) for the production of aluminium. The cells are placed along two parallel lines (3). The apparatus comprises means (1) for capturing the gases at the electrolytic cells (2), ducts (5) that collect the gases to be captured at the electrolytic cells (2), at least one duct (7) transporting the gases to a gas treatment centre (8) and exchangers (9) that make it possible to cool the gases before the entry thereof into the gas treatment centre (8), wherein the exchangers (9) are placed in parallel along at least one duct (7) that transports the gases to the treatment centre (8), each exchanger (9) can be operated independently of the others, insulation devices (16) are disposed on either side of the exchanger (9), and the gases are distributed in all or some of the exchangers (9) by a plenum (13) then assembled in another plenum (14) after cooling. .

Description

technical field [0001] This invention relates to an apparatus for processing gases from electrolytic smelting cells for the production of aluminium. More specifically, it involves placing heat exchangers to cool the gas before it is processed. Background technique [0002] Usually a gas processing center (GTC) has multiple heat exchangers, because the maximum capacity of the exchanger is limited by the manufacturing and processing conditions. Therefore, handling extremely large quantities (usually one GTC corresponds to 2,000,000N m 3 / h) The gas flow usually needs to be extended to 4 to 32 exchangers. [0003] There are multiple configurations at this point. Document WO 2012 / 007809 A1 discloses an arrangement of heat exchangers placed directly below the filter in the vicinity of the reactor. With this configuration, a downsized exchanger can be used for each filter. It is then possible to isolate the exchanger at the same time as the filter. This configuration increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/22
CPCC25C3/22
Inventor 西埃里·马拉德埃尔哈尼·鲍哈比拉安托伊内·昆廷德格罗马德
Owner FIVES SOLIOS