Shell-and-tube heat exchanger incrustation removing device

Abstract

The invention discloses a shell-and-tube heat exchanger incrustation removing device. The shell-and-tube heat exchanger incrustation removing device comprises a heat exchanger shell, wherein a plurality of pipelines are annularly arranged on the heat exchanger shell, slits communicated with an inner cavity of a heat exchanger are formed in the side walls of the pipelines, pipeline supports are communicated through an annular pipe, and a plastic plate capable of sliding transversely is arranged in the heat exchanger shell; and a plurality of lugs inserted into the inner side of the pipeline are arranged on the periphery of the plastic plate, and heat exchange pipes in the heat exchanger shell penetrates through the plastic plate. According to the shell-and-tube heat exchanger incrustation removing device, during incrustation removal, sodium bicarbonate is introduced into the pipelines through the annular pipe, so that lug parts are pushed to drive the plastic plate to slide along the heat exchange pipes, incrustation at the outer sides of the heat exchange pipes is scratched, and the surface structure of the incrustation is damaged; and meanwhile, the reaction of the incrustation is accelerated through the sodium bicarbonate flowing into the heat exchanger, so that the treatment effect is enhanced, and the practicability is higher.

Description

technical field [0001] The invention belongs to the technical field of heat exchanger equipment, and in particular relates to a scale removal device for a tube-and-tube heat exchanger. Background technique [0002] Tube and tube heat exchanger is the most widely used heat exchanger in chemical and alcohol production. It is mainly composed of shell, tube sheet, heat exchange tube, head, baffle and so on. The required material can be made of ordinary carbon steel, red copper, or stainless steel. During heat exchange, one kind of fluid enters from the connecting pipe of the head, flows in the pipe, and flows out from the outlet pipe at the other end of the head, which is called the tube side; The other connection on the shell flows out, which is called the shell side. [0003] After the heat exchanger is used for a long time, due to the presence of magnesium ions and calcium ions in the water, calcium or magnesium carbonate crystals called scales are attached to the surface ...

AI Technical Summary

Problems solved by technology

[0003] After the heat exchanger is used for a long time, due to the presence of magnesium ions and calcium ions in the water, calcium or magnesium carbonate crystals called scales are attached to the surface of the heat exchange tubes through heating, which affects the heat transfer efficiency. After a period of time, it needs For the descaling operation, the existing heat exchanger descaling method needs to disassemble the shell, which is time-consuming and laborious, and the descaling efficiency is low, so targeted improvement design is required

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