Shell-pass-self-cooling-protecting floating head heat exchanger and heat exchanging method

Abstract

The invention discloses a shell-pass-self-cooling-protecting floating head heat exchanger. The shell-pass-self-cooling-protecting floating head heat exchanger comprises a shell pass cylinder, a shell pass outlet is formed in one end of the shell pass cylinder, a pipe box is arranged at the other end of the shell pass cylinder, a shell pass inlet is formed in the shell pass cylinder, and the pipe box is provided with a pipe pass inlet and a pipe pass outlet. The shell-pass-self-cooling-protecting floating head heat exchanger is characterized in that a multi-layer-casing-pipe-structure heat exchanging pipe is arranged in the shell pass cylinder. According to another technical scheme, the invention provides a heat exchanging method of the shell-pass-self-cooling-protecting floating head heat exchanger. The shell-pass-self-cooling-protecting floating head heat exchanger and the heat exchanging method have the advantages that pipe-pass and shell-pass swelling stress can be avoided, the level of materials of pressed pieces can be lowered, and the manufacturing cost of equipment can be reduced.

Description

technical field [0001] The invention relates to a heat exchange device and a heat exchange method based on the heat exchange device. Background technique [0002] With the improvement of national environmental protection requirements, more and more attention has been paid to the recycling of energy, but the energy recovery of high-temperature or ultra-high-temperature pressure media is difficult, mainly due to the limited pressure-bearing capacity of materials in high-temperature environments, especially ordinary metal materials When the temperature exceeds 500°C, its design allowable stress is only 1 / 3 of that at room temperature, or even lower. When the pressure of the high-temperature medium is high, the material used for heat exchange equipment will be very thick, sometimes exceeding the production capacity of existing materials, and high temperature will cause large expansion stress, making the structural design of heat exchange equipment impossible to realize. Conten...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of national environmental protection requirements, more and more attention is paid to the recycling of energy, but the energy recovery of high-temperature or ultra-high-temperature medium with pressure is relatively difficult, mainly due to the limited pressure-bearing capacity of materials in high-temperature environments, especially ordinary metal materials When the temperature exceeds 500°C, the design allowable stress is only 1 / 3 of that at room temperature, or even lower

When the pressure of the high-temperature medium is high, the material used for heat exchange equipment will be very thick, sometimes exceeding the production capacity of existing materials, and high temperature will cause large expansion stress, resulting in the structural design of heat exchange equipment cannot be realized

Images