Aluminum electrolysis cell forced ventilation afterheat utilization device and utilization method

Abstract

The invention relates to an aluminum electrolysis cell forced ventilation afterheat utilization device, in particular to the aluminum electrolysis cell forced ventilation afterheat utilization device and a utilization method. A cell shell of an electrolysis cell, a cradle frame and a cell edge plate form a forced ventilation sealing box; the cell shell of the sealing box is welded with a cooling plate; a wind inlet pipe is arranged on the sealing box, and is connected with a wind blower; an exhaust hole is formed in the cell edge plate, and is communicated with a horizontal collection exhaust pipe; and the horizontal collection exhaust pipe is arranged at the outer side of the cell shell, collects forced ventilation tail gas exhausted from the sealing box, and exhausts the tail gas into a cell hearth. The utilization device is simple in structure and convenient for manufacturing and installation, can transfer heat, absorbed from the lower part of the cell, in forced ventilation to the upper part of the electrolysis cell for heating the cell hearth so as to help the electrolysis cell to build excellent heat balance under the low voltage cell condition.

Description

technical field [0001] The invention relates to a forced ventilation waste heat utilization device of an aluminum electrolytic cell, in particular to a forced ventilation waste heat utilization device and a utilization method of an aluminum electrolytic cell. Background technique [0002] Energy saving and emission reduction is the main direction of the development of aluminum electrolysis technology, and the key lies in how to establish and maintain a good heat balance in the electrolytic cell under low voltage. A large amount of heat emitted from the lower part of the traditional electrolytic tank pours into the electrolytic workshop, which increases the temperature of the worker's operating environment. The current method is to transfer part of the heat out of the electrolytic workshop through forced ventilation. While a large amount of heat is dissipated in the lower part of the electrolytic tank, the upper part of the tank often suffers from insufficient heat preservati...

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a forced ventilation waste heat utilization device and utilization method of an aluminum electrolytic cell. The purpose is to solve the problem that while a large amount of heat is dissipated in the lower part of the existing electrolytic cell, the upper part of the cell often suffers from insufficient heat preservation and the thermal expenditure is too large The phenomenon makes it impossible for the electrolytic cell to establish a reasonable heat dissipation ratio under low voltage, which is not conducive to the further reduction of the cell voltage and the maintenance of long-term stable and efficient operation of the electrolytic cell.

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