Aluminum electrolysis cell side wall waste heat power generation device based on organic flash evaporation circulation

Abstract

The invention discloses an aluminum electrolysis cell side wall waste heat power generation device based on organic flash evaporation circulation, and relates to the technical field of thermoelectric equipment waste heat recovery and utilization. The aluminum electrolysis cell side wall waste heat power generation device comprises a condenser (1), a first working medium pump (2), a mixer (3), a second working medium pump (4), an aluminum electrolysis cell (5), a wall surface heat exchanger (6), an evaporator (7), a low boiling point working medium steam turbine (8), a power generation set (10) and a cooling water pump (11). The aluminum electrolysis cell side wall waste heat power generation device can effectively recycle waste heat of the side wall of the aluminum electrolysis cell, and is applicable to technological transformation on the conventional different levels of aluminum electrolysis cells without making large change to the original aluminum electrolysis production system, the original production operation is fundamentally not affected during system operation, and the transformation risk is little.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery and utilization of thermoelectric equipment, and in particular relates to a side wall waste heat power generation device of an aluminum electrolytic cell based on an organic flash cycle. Background technique [0002] The electrolytic aluminum industry is a large consumer of electric energy. As of the end of 2015, my country's electrolytic aluminum production capacity was 37.2 million tons, and the actual output was 31.11 million tons. The total electricity consumption accounted for 12% of the country's total electricity consumption, and more than half of the energy was directly lost to the environment in the form of electrolytic cell heat. Effective utilization of waste heat from aluminum electrolytic cell is an important measure to realize energy saving in aluminum metallurgical industry. [0003] The temperature of the side wall of the aluminum electrolytic cell is between 250 and 3...

AI Technical Summary

Problems solved by technology

The device of the present invention can effectively recycle and utilize the waste heat of the side wall of the aluminum electrolytic cell, and is suitable for the technical transformation of existing aluminum electrolytic cells of different levels, and does not need to make major changes to the original aluminum electrolytic production system, and basically does not affect the operation of the system. The original production operation, the risk of transformation is small

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