Novel nonmetal expansion joint

Abstract

A novel nonmetal expansion joint comprises skin, heat insulating filler, a pressing plate, a machine frame and a baffle, wherein the skin is connected with the machine frame and the baffle through the pressing plate to form a hollow structure, the hollow structure is filled with the heat insulating filler, one end of the baffle is welded to a connecting pipe, the other end of the baffle is a free end, the gap between the baffle and the connecting pipe is 8 mm wide, and the five layers of skin are combined through silica gel and T530 binder and are silicone rubber-coated glass fiber cloth, a teflon film, 0.7 mm alkali-free glass fiber cloth, a teflon film and teflon-coated glass fiber cloth from outside to inside in sequence.

Description

technical field [0001] The invention relates to a non-metallic expansion joint, in particular to a non-metallic expansion joint used in high-temperature, high-sulfur corrosion working conditions. Background technique [0002] The combined production of caprolactam and ammonium sulfate produces a large amount of organic waste liquid. After being burned in the incinerator, it will pass through the desulfurization device to make the flue gas meet the standard and then be discharged into the atmosphere. The organic waste liquid ensures the full atomization of the concentrated liquid, and the concentrated liquid enters the incinerator for pyrolysis, and the sulfur in it is oxidized to generate SO 2 and SO 3 , and there is a large amount of N in the combustion products 2 , some surplus O 2 and trace NO x , potassium ions, sodium ions, and high-temperature flue gas from the denitrification chamber enter the waste heat boiler. The material of the part directly heated by the fla...

AI Technical Summary

Problems solved by technology

The material of the part directly heated by the flame is burned first, causing the heat insulation layer to fall off, causing serious deformation of the bellows, and eventually burning through