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Raw Gas Collection System

A collection system, original technology, applied in the direction of reducing gas emissions, furnaces, lighting and heating equipment, capable of solving problems such as size and increased energy consumption of the installation

Active Publication Date: 2016-07-27
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as the amount of raw gas increases, the size of the gas cleaning unit, the size of the downstream fan that draws the gas through the gas cleaning unit, and the plant energy consumption must also increase accordingly

Method used

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Examples

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Embodiment Construction

[0024] figure 1 is a schematic side view of the aluminum production facility 1 . The aluminum production plant 1 has an aluminum production cell chamber 2 in which a plurality of aluminum production cells or melting tanks 4 can be arranged. exist figure 1 In , only one smelting tank 4 is depicted for clarity and simplicity, and it will be understood that the electrolytic cell chamber 2 may typically include 50 to 200 smelting tanks 4 . The melting tank 4 includes a plurality of anode electrodes 6 , typically six to thirty anode electrodes, which are typically arranged in two parallel rows extending along the length of the melting tank 4 and into the contents 7 of the bath 8 . One or more cathode electrodes 10 are also located within bath 8 . The process carried out in the smelting tank 4 may be the well-known Hall-Elu process, in which alumina dissolved in a melt of fluorine-containing minerals is electrolyzed to form aluminum, and the smelting tank 4 thus acts as an electr...

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PUM

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Abstract

A raw gas collection system (15) for collecting raw gas from a plurality of aluminum smelting tanks (4) is equipped with branch pipes (16, 16a-d). each branch pipe (16, 16a-d) is arranged to direct a respective branch stream (32, 32a-b) of raw gas from the aluminum smelting tank (4) to a collection pipe (20a), which is common to the branch pipes, and Shared by branch pipes (16, 16a-d). Several branch pipes (16, 16a-d) are equipped with combined heat transfer and flow resistance generating elements (17) to remove heat from respective branch streams (32, 32a-b) of raw gas to balance the raw gas collection system The original gas flow in (15). The combined heat transfer and flow resistance generating element (17) reduces the need to use dampers to regulate the flow of the respective branch conduits (16, 16a-d), thereby reducing the power required to deliver the raw gas through the system.

Description

technical field [0001] The present invention relates to a raw gas collection system for collecting raw gas from a plurality of aluminum smelting tanks. A plurality of branch pipes are adapted to lead raw gas from respective aluminum smelting tanks. A common collection pipe leads the raw gas from multiple branch pipes to the gas cleaning unit. [0002] The invention also relates to methods for balancing raw gas flow in a raw gas collection system, and the use of combined heat transfer and flow resistance generating elements to balance multiple sub-streams of raw gas in a raw gas collection system. Background technique [0003] Aluminum is produced in electrolytic smelting tanks by electrolytic reactions using the Hall-Heroult process. The process produces raw gas in the form of hot particulate-laden raw gas, which is cleaned in a gas cleaning unit before being vented to the atmosphere. Piping systems are typically used to conduct hot particulate laden raw gas from the smel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/22F16D1/04F27D1/00
CPCF27B14/08F27D17/001F27D17/004Y02P10/122C25C3/22Y02P10/25
Inventor A.K.索尔胡斯G.维德O.E.比雅诺
Owner GENERAL ELECTRIC TECH GMBH