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Method and system for monitoring the operation of a carbonaceous block roasting plant

A roasting and block technology, applied in the direction of lighting and heating equipment, furnace, furnace safety device, etc., can solve the problem that the overall adjustment system cannot detect and clean, and achieve the effect of avoiding calculation

Inactive Publication Date: 2011-11-30
RIOTINTO ALCAN INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to date there is no reliable automated means to quickly detect partition cleaning problems with the goal of triggering safety measures
Also, the overall conditioning systems used are generally not capable of detecting and acknowledging cleaning problems that occur locally in the partition
Reliable detection of partition sweeping problems is only possible with special monitoring by the furnace operator

Method used

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  • Method and system for monitoring the operation of a carbonaceous block roasting plant
  • Method and system for monitoring the operation of a carbonaceous block roasting plant
  • Method and system for monitoring the operation of a carbonaceous block roasting plant

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Embodiment Construction

[0074] The anode roasting equipment includes a rotary heat source furnace 1 . The following detailed description relates to the practice of the invention on equipment comprising chamber furnaces, such as Figure 1-3 The device shown in . However, the invention is not limited to this type of furnace. In particular, the invention is also applicable to installations comprising furnaces without intermediate transverse walls between the end walls.

[0075] The furnace 1 comprises a thermally insulating enclosure 2 of substantially parallelepiped form, relative to which a longitudinal direction X and a transverse direction Y are defined. In the enclosure 2, a transverse wall 3 is placed enclosing a cavity C continuous in the X direction. In each chamber C, hollow space walls 4 are placed in longitudinal direction, forming long cells 5 between each other. Therefore, each cavity C includes a plurality of partition walls 4a to 4i, such as figure 2 shown in .

[0076] The partiti...

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Abstract

The furnace equipment comprises partition walls in which hot gases from roasting carbonaceous blocks circulate, and heating ramps (21, 22, 23) with nozzles or fuel injectors rotating relative to said furnace. A gas circulation line (24) is enclosed along said partition between the air blowing arm (20) and the corresponding gas suction arm (12). In order to detect even partial partition blockages, the method comprises, continuously: a) for each gas circulation line, recording at least one of the following measured parameters: temperature, pressure, flow, oxygen concentration and carbon monoxide concentration; b) evaluating the at least one factor obtained by measuring the parameter; c) comparing the factor with a corresponding reference value; and d) signaling a fault when the comparison between said factor and said corresponding reference value does not satisfy a predetermined safety criterion.

Description

technical field [0001] The present invention relates to a method and a system for monitoring the operation of a carbonaceous block roasting plant, in particular carbon anodes for the production of aluminum by electrolysis. [0002] The present invention is intended to detect any malfunctions related to combustion problems, especially those caused by lack of combustible, low ignition temperature or too much combustible quantity (relative to combustible) . Background technique [0003] Aluminum metal can be produced industrially by electrolysis using the Hall-Héroult method. For this purpose there is provided an electrolytic cell comprising a cathode unit at the bottom and comprising an electrolyte cell into which an anode of carbon material is partly immersed. [0004] The anodes are made from molded carbonaceous blocks fired in a furnace. These furnaces are known to comprise a heat-insulating hood which may comprise transverse walls enclosing a cavity. The furnace is equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B13/14F27D21/00F27D21/04F27B13/02
CPCF27B13/02F27D2021/0057F27D21/00F27B13/14F27D21/04
Inventor Y·埃尔高里M·根德雷F·奥多纽J-P·克罗伊文
Owner RIOTINTO ALCAN INT LTD
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