Abstract
The corrosion condition of flue gas desulfurization (FGD) equipment for the coal-fired power plant was defined as the strong corrosion grade. The lining system of hybrid polymer composite was used in internal cylinder of steel chimney, and a corrosion-resistant and heat-resistant protective layer was formed on the metal surface. The corrosion-resistant and ageing-resistant properties of hybrid polymer composite prepared at low temperature after four years of practical use were investigated by differential scanning calorimeter (DSC), scanning electron microscopy (SEM) and measurement of gravimetric variation, contact angle, abrasion resistance, bonding strength and tensile strength. The properties of hybrid polymer composites prepared at 25℃ and –15℃ were comparatively analyzed in the paper.
Highlights
flue gas desulfurization (FGD) system has been widely used to remove sulfur dioxide from flue gases of power plants
The thermal stability of hybrid polymer composite before and after practical use is evaluated by differential scanning calorimeter (DSC) analysis of Figure 2
Tg of hybrid polymer composite prepared at 25 ̊C before practical use is 226.2 ̊C, and Tg of hybrid polymer composite prepared at −15 ̊C after four years of practical use is 217.5 ̊C
Summary
FGD system has been widely used to remove sulfur dioxide from flue gases of power plants. − x and Cl−, exist in the saturated wet flue gases after desulfurization. Dew point corrosion of sulfuric acid, wet/dry alternation, thermal stress and wear of flue gas all contribute to the aggressive damage of desulfurization equipment. Cellular glass boards, organic coatings, glass fiber reinforced plastics and inorganic-organic hybrid polymer composites have been applied in corrosion pre-. (2016) Analysis on the Durability of Hybrid Polymer Composites for Power FGD System. The hybrid polymer composite can successfully be proposed as a protective material for steel [1]-[7]
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