Vertical type shell-and-tube heat exchanger

Abstract

The invention relates to a vertical type shell-and-tube heat exchanger. The vertical type shell-and-tube heat exchanger is characterized by comprising a vertically arranged shell; the upper end and the lower end of the shell are each connected with a channel through a tube plate; a shell side inlet tube is arranged on one side of the upper end of the shell; a shell side outlet tube is arranged on one side of the lower end of the shell; a tube side inlet tube is arranged at the top of the channel arranged at the upper end of the shell, and a tube side outlet tube is arranged at the bottom of the channel arranged at the lower end of the shell; a plurality of baffle plates provided with notches are arranged inside the shell at intervals in a staggered mode; every two adjacent baffle plates are fastened to the side walls on different sides of the shell correspondingly; passages allowing fluid to flow are formed between the baffle plates; the free end of each baffle plate is lower than the connecting end of each baffle plate; a heat exchange tube bundle penetrates through the baffle plates; and the two ends of the heat exchange tube bundle are fastened to the two tube plates. The baffle plates located on the same side of the shell are mutually parallel. An included angle between each baffle plate and the horizontal plane is 15-25 degrees. The vertical type shell-and-tube heat exchanger can prevent accumulated liquid from forming on the baffle plates, the heat exchange effect is improved, and the service life of the vertical type shell-and-tube heat exchanger is prolonged.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a vertical shell-and-tube heat exchanger. Background technique [0002] The structure of shell and tube heat exchangers generally includes tube boxes, tube sheets, shells, baffles, heat exchange tubes, etc. Among them, the baffles in the shell-and-tube heat exchanger can not only support the heat exchange tube bundle, but also make the shell-side medium flow according to a specific flow channel, increase the degree of turbulence, and improve the heat transfer characteristics. The existing shell-and-tube heat exchanger baffles mainly include arcuate baffles and spiral baffles. Ordinary bow-shaped baffles are flat plates, perpendicular to the heat exchange shell and arranged along the axial direction of the heat exchange tube bundle, and the gaps of two adjacent baffles are staggered from each other. The flow channels formed make the fluid in the shell-and-tube exchange circuitous flow in the ...

AI Technical Summary

Problems solved by technology

However, the prior art does not provide a solution to the problem of liquid accumulation at the baffle when the bow-shaped baffle is used in the case of shell-side condensation

Since the accumulation of liquid will deteriorate the heat transfer performance of the heat exchange tube on the one hand, and on the other hand, it will also cause fouling and corrosion of the heat exchanger, which can affect the service life of the heat exchanger

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