Sleeve type metal radiation heat exchanger

Abstract

The invention discloses a sleeve type metal radiation heat exchanger which comprises a metal barrel, wherein the upper part of the exterior of the metal barrel is connected with a hot air box, the lower part of the exterior of the metal barrel is connected with a cold air box, a hanging install device is arranged on the upper part of exterior of the metal barrel, a smoke seal device is arranged on the bottom of the cold air box. The upper part of the metal barrel is provided with the hanging install device, so that the heat exchanger is vertically and fixedly arranged in a mode that the upperpart of the heat exchanger is suspended, the lower part of the heat exchanger is free end, when the metal barrel is subjected to thermal expansion and deformation, the metal barrel can extend toward to the lower end, thus the arrangement of the connecting line of the upper part of the metal barrel is not influenced, therefore, even if the height of the metal barrel is higher(such as more than 10m), the problems in structure and installation caused by thermal expansion do not exist.

Description

technical field [0001] The embodiment of the present invention relates to a sleeve-type metal radiation heat exchanger, in particular to a metal radiation heat exchanger which can be used for waste heat recovery of high-temperature flue gas (flue gas temperature higher than 900° C.). Background technique [0002] High-temperature flue gas waste heat recovery devices need to use heat exchangers. The heat exchangers currently used are generally clay preheaters and metal radiation heat exchangers. Metal radiation heat exchangers are generally made of heat-resistant steel. Among them, the advantage of the clay preheater is that it is mainly made of refractory bricks instead of heat-resistant steel, so the cost is low and the service life is long; Tight, serious air leakage, relatively large volume. The advantage of the metal radiation heat exchanger is that it has a compact structure, good air tightness, and can preheat the medium with a certain pressure; its disadvantage is th...

AI Technical Summary

Problems solved by technology

Since the metal cylinder adopts the installation method of fixing the lower part, that is to say, under the action of the high-temperature flue gas inside the metal cylinder, if the metal cylinder thermally expands, the metal cylinder can only elongate and deform toward the free end of the upper part, but the metal cylinder The upper part of the cylinder has a connecting pipeline for preheating air and flue gas, so if the height of the metal cylinder is high, its elongation and deformation will be large, and the installation of the upper connecting pipeline will be affected due to thermal expansion, so Structural and installation problems will arise

Images