Detachable modular wear-resistant ash-removal three-dimension finned tube type heat exchanger

Abstract

The invention discloses a detachable modular wear-resistant ash-removal three-dimension finned tube type heat exchanger. The detachable modular wear-resistant ash-removal three-dimension finned tube type heat exchanger comprises a heat exchanger shell connected with a flue; an air inlet is formed in a front end plate of the heat exchanger shell, and an air outlet is formed in a rear end plate of the heat exchanger shell; and a cold working medium inlet header pipe and a cold working medium outlet header pipe are arranged on the outer portion of the heat exchanger shell. The detachable modularwear-resistant ash-removal three-dimension finned tube type heat exchanger is characterized in that a damping screen is disposed in the heat exchanger shell and at the air inlet end; a plurality of wear-resistant false tubes stacked in the height direction are arranged on the rear side of the damping screen; the two ends of the wear-resistant false tubes are fixed to the left end plate and the rear end plate of the heat exchanger shell in a threaded or press-jointed mode; a plurality of acoustic wave dust removers overlapped in the height direction are arranged on the rear side of the wear-resistant false tubes; a plurality of three-dimension finned tube type heat exchange units are arranged on the rear side of the acoustic wave dust removers; and the three-dimension finned tube type heatexchange units are overlapped in the height direction as well as in the horizontal direction. The detachable modular wear-resistant ash-removal three-dimension finned tube type heat exchanger can be widely applied to the field of waste heat recovery of different types of industrial exhaust gas.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a detachable modular anti-wear and ash-removing three-dimensional finned tube heat exchanger. Background technique [0002] The two major problems of energy crisis and environmental pollution restrict the sustainable development of my country's economy and society. Improving energy utilization efficiency and reducing pollution emissions are the primary tasks of our country. According to reports, my country's industrial energy consumption accounts for about 70% of the total energy consumption, and about 60% of the energy is converted into waste heat at different temperatures. If this part of waste heat is directly discharged into the atmosphere, it will cause great energy waste and serious thermal pollution problem. Therefore, recycling the waste heat in industrial flue gas is of great significance to alleviate the pressure of energy crisis and environmental pollution. [0003] Shell-and-tube ...

AI Technical Summary

Problems solved by technology

As a result, shutdown for maintenance has caused huge economic losses to the enterprise, and blockage maintenance has also changed the rated thermal load of the heat exchanger, which is a very undesirable method

[0005] In addition, in order to improve the heat transfer efficiency, people use various means of enhancing heat transfer to design and manufacture finned tubes to replace traditional light tubes, such as spiral finned tubes, H-shaped finned tubes, zigzag finned tubes, etc. , but its fins are connected to the base tube through thermal expansion or welding. This type of finned tube is not only difficult to process, high in cost, and has a long production cycle of the finned tube. There is a large contact thermal resistance between them, which hinders the heat exchange of cold and hot media to a certain extent, and affects the heat transfer efficiency of the heat exchanger.

Moreover, this type of fin structure can only be processed on the outside of the heat exchange tube, and cannot achieve enhanced heat transfer inside and outside the tube at the same time, and cannot achieve an efficient and compact heat exchanger design

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