Countercurrent tube bundle type wall-type heat exchanger

Abstract

The invention discloses a countercurrent tube bundle type wall-type heat exchanger, which is formed by connecting 1 to 50 heat exchange units in series; and 1 to 65 rows of total 2 to 200 hot fluid tubes and cold fluid tubes which are opposite in flow directions and alternately arranged parallelly are arranged in each heat exchange unit; the hot fluid tubes and the cold fluid tubes are filled with flow around bodies; a heat insulating gasket is arranged between two heat exchange units and a connecting part of the two heat exchange units; and heat exchange units at the head and at the tail arerespectively communicated with cold and hot fluid splitter / mergers arranged at two ends. The countercurrent tube bundle type wall-type heat exchanger has the advantages of strong heat exchange capacity, high structural strength, compact equipment, small occupied space, low operating cost, obvious energy-saving potential, and convenient disassembly, cleaning and maintenance, and can be widely applied to industrial processes such as heating, cooling, condensing and evaporating in industrial departments such as chemical engineering, petroleum, foodstuff, metallurgy, machinery, light industry, electric power, shipping, papermaking, mines, medicaments, and concentrated heat supply.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a countercurrent pipe-row partition wall heat exchanger. Background technique [0002] In the field of heat exchange technology, the partition wall heat exchanger is the most widely used and the most important type of heat exchanger. The existing partition wall heat exchangers mainly include tube type and plate type according to the structure of the heat transfer surface. Among them, the plate heat exchanger has a large heat exchange area and good heat exchange performance, but the heat return loss of the plate heat exchanger is also large; especially its structural strength is far lower than that of the tube heat exchanger, so it cannot be applied to high pressure or In medium pressure occasions; the disadvantage of low structural strength of plate heat exchangers is determined by its structural characteristics, so it cannot be changed and broken through within its own scope; this sever...

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Problems solved by technology

[0002] In the field of heat exchange technology, the partition wall heat exchanger is the most widely used and the most important type of heat exchanger. The existing partition wall heat exchangers mainly include tube type and plate type according to the structure of the heat transfer surface. Among them, the plate heat exchanger has a large heat exchange area and good heat exchange performance, but the heat return loss of the plate heat exchanger is also large; especially its structural strength is far lower than that of the tube heat exchanger, so it cannot be applied to high pressure or In medium pressure occasions; the disadvantage of low structural strength of plate heat exchangers is determined by its structural characteristics, so it cannot be changed and broken through within its own scope; this severely restricts the application and development of plate heat exchangers; The heat transfer performance of shell and tube heat exchangers is far lower than that of plate heat exchangers; but because of its high structural strength, it is still in the dominant position; existing tubular heat exchangers include coiled tube heat exchangers, casing heat exchangers heat exchanger and shell-and-tube heat exchanger, etc.; among them, the heat exchange performance of the sleeve heat exchanger is slightly better, and its heat exchange process is longer, but its heat exchange area is smaller, and in its heat exchange process, The hot and cold flow is not equal, only one side has flow around; currently there is no ideal heat exchanger with strong heat transfer performance and high structural strength

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