Waste heat recovery system of aluminum alloy casting workshop

Abstract

The invention relates to the technical field of waste heat recovery, and discloses a waste heat recovery system of an aluminum alloy casting workshop, which comprises a waste heat recovery system, the waste heat recovery system comprises a combustion chamber, a heat exchanger, a heat pipe waste heat recovery device and an exhaust chimney; the combustion chamber comprises fuel and a burner; the heat pipe waste heat recovery device comprises a heat pipe and a waste heat recovery device; the heat pipe comprises a pipe shell, a pipe core, a steam cavity and working fluid. The waste heat recovery device comprises an upper channel (liquid channel), a lower channel (smoke channel) and a gas-liquid separation plate. Low-temperature hot water enters from the bottom of the right side of the liquid channel and absorbs heat released by the condensation section when flowing through the heat pipe, and the water temperature rises; and the heated high-temperature water flows out from the upper part of the left side of the liquid channel and enters a hot water return pipeline. Through the circulation, the heat of the high-temperature flue gas is absorbed by the low-temperature hot water through the heat transfer effect of the heat pipe, the flue gas emission temperature is reduced, and the purpose of saving energy is achieved.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery system of an aluminum alloy melting and casting workshop. Background technique [0002] Waste heat recycling refers to the recycling and reuse of waste heat generated by industrial processes. The main technologies include heat exchange technology, heat power conversion technology, and waste heat refrigeration and heating technology. At present, my country's energy utilization still has the main problems of low utilization efficiency, poor economic benefits, and great pressure on the ecological environment. The fundamental way of the problem is in the position of priority development. Achieving the goals of energy saving and emission reduction and improving energy efficiency mainly depends on the industrial sector. The waste heat resource belongs to the secondary energy, which is the product of the conversion of primary energy or combustible mat...

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Problems solved by technology

[0003] Although waste heat resources have a wide range of sources, a wide temperature range, and various forms, from the perspective of waste heat utilization, waste heat resources generally have the following things in common: due to the periodicity, discontinuity or production fluctuations in the process of production, the waste heat is unstable; The nature of the waste heat medium is bad, such as a large amount of dust in the flue gas or corrosive substances; the waste heat utilization device is limited by the inherent conditions such as the site and the original production

Therefore, the operating environment of industrial waste heat resource utilization systems or equipment is relatively harsh, requiring a wide and stable operating range, which can adapt to changing production process requirements, high reliability of equipment components, and high initial investment costs

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