An aluminum oxidation energy-saving refrigeration water film cooling system

Abstract

The invention relates to an aluminum oxidation energy-saving refrigeration water film cooling system, which comprises a process tank (1), a refrigeration unit (2) and a multifunctional evaporative cold water film cooler (3); The electrolyte is respectively connected to the medium inlet of the refrigeration unit (2) and the multifunctional evaporative cold water film cooler (3) through the medium outflow pipeline (101), the refrigeration unit (2) and the multifunctional evaporative cold water film cooler ( The medium outlets of 3) are all connected to the process tank (1) through the medium return pipeline (102). The invention relates to an aluminum oxidation energy-saving refrigeration water film cooling system, and relates to an automatic control of the refrigeration mode and the water film cooling mode based on the ambient temperature, and the use of wet bulb temperature to reduce energy consumption.

Description

technical field [0001] The invention relates to a refrigerating water film cooling system, in particular to a refrigerating and cooling system applied to an aluminum oxidation process, and belongs to the technical field of energy saving. Background technique [0002] Aluminum oxidation, that is, the process of using aluminum products as anodes, placing them in an electrolyte solution for electrification, and using electrolysis to form an aluminum oxide film on the surface; after aluminum oxidation treatment, an oxide film can be formed on the aluminum surface. The natural oxide film, its corrosion resistance, wear resistance and decorative properties have been significantly improved and improved; for this reason, aluminum oxidation has become an indispensable key technology in the aluminum profile process; [0003] In the process of aluminum oxidation, the positive and negative electrodes inserted in the electrolyte solution (generally using sulfuric acid) are continuously h...

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Problems solved by technology

[0003] In the process of aluminum oxidation, the positive and negative electrodes inserted in the electrolyte solution (generally using sulfuric acid) are continuously heated due to the principle of electric heating, and the ideal production temperature of aluminum oxidation is 17~18°C, so it is necessary to use The cooling system continuously cools the electrolyte solution; conventional cooling systems such as Figure 4 As shown, the refrigerating unit in the dotted line box cools the coolant to maintain the temperature, and the electrolyte solution in the aluminum oxidation process tank is passed into the heat exchanger to exchange heat with the refrigerant, so that the electrolyte solution returns to the process tank after cooling down Internal; because the positive and negative electrodes always exist in the process of aluminum oxidation, the conventional system needs to continuously cool the electrolyte solution, even in seasons when the temperature is lower than 0°C, refrigeration units are used to cool down, and the power consumption is relatively large; According to a survey, a medium-sized aluminum profile enterprise has at least six 2100Kw refrigeration systems, each with a power consumption of 400Kw / h, so the annual power consumption is 400Kw / h*6*24h*365=21024000Kw; There are no less than 1,000 enterprises of this size, so tens of billions of kilowatt-hours of electricity are consumed every year just for refrigeration and cooling;

[0004] And according to Figure 5 In most parts of China, the ambient temperature is lower than 20°C for more than half a year. At this time, when the ambient temperature is lower than the electrolyte temperature in the process tank, it still needs to consume a lot of electric energy for cooling. Undoubtedly is a huge waste;

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