Anti-corrosion chimney and installation and construction method thereof

Abstract

The invention relates to an anti-corrosion chimney and an installation and construction method thereof. A glass fiber reinforced plastic inner cylinder is arranged on the inner cylinder part, above the elevation of 26.5 m, of the chimney, and imported ceramic vitrified bricks are additionally arranged on the steel inner cylinder, below the elevation of 26.5 m, of the chimney and a horizontal flue,or imported glue coating is carried out. The installation and construction method comprises the steps that the steel inner cylinder and an anti-corrosion lining which losts the anti-corrosion function in an original chimney are removed, and the defects of accessory parts of the chimney are repaired; then, a bearing platform is arranged at an appropriate elevation position in combination with theoriginal chimney and the accessory structure inside the concrete chimney and above an ash deposition platform, the self-supporting glass fiber reinforced plastic inner cylinder is installed, and a certain interval is reserved with the outer wall of the chimney after installation, so that daily inspection is conveniently carried out on the operation condition of the chimney. The anti-corrosion chimney has high anti-corrosion and adaptability to various acid, alkali and climate changes. The construction period is short and the investment cost is low.

Description

technical field [0001] The invention relates to the field of industrial and mining enterprise infrastructure, in particular to an anti-corrosion chimney and its installation and construction method. Background technique [0002] At present, the desulfurization devices used in industrial and mining enterprises adopt the limestone-gypsum wet desulfurization process. After the flue gas is wet desulfurized, the humidity increases and the temperature decreases. It is very easy to condense on the inner wall of the chimney. After the residual sulfur trioxide in the flue gas dissolves, it forms Very corrosive dilute sulfuric acid solution. Therefore, desulfurization flue gas is generally regarded as a "high" chemically corrosive medium, which belongs to the level of highly corrosive flue gas. In addition to SO2, SO3 and their corresponding dilute sulfuric acid and dilute sulfurous acid, the flue gas also contains a certain amount of strong corrosive media such as HF and HCL. The pr...

AI Technical Summary

Problems solved by technology

The disadvantage is that the construction of this technology is extremely difficult and requires high-altitude operations, and some welding problems are prone to occur. During the installation and lifting process, the titanium layer may face the risk of scratches, collision deformation, and these defects will bring hidden dangers to the safe operation of the chimney.

The weld seam of titanium plates of a chimney is tens of kilometers long, and there are inevitably flaws or omissions in the construction process, which will cause future corrosion damage

This process requires strict control of safety and quality during the construction process, the construction period is long, and the cost of materials is high

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