A thermal power plant wet chimney with flame-retardant and anti-corrosion FRP structure

Abstract

The invention discloses a flame-retardant and anticorrosion wet chimney with a glass fiber reinforced plastic structure for a thermal power plant. The flame-retardant and anticorrosion wet chimney comprises an outer support mechanism and a glass fiber reinforced plastic lining, and is characterized in that the glass fiber reinforced plastic lining is an integral inner barrel, a plurality of sections of glass fiber reinforced plastic barrels which are manufactured in a sectioned manner are hermetically connected with one another to form the integral inner barrel, reinforcing ribs are arranged on the glass fiber reinforced plastic lining at intervals, nonmetal expansion joints are arranged on the glass fiber reinforced plastic lining at intervals, and support joints are respectively arranged at different altitudes of the wet chimney. The flame-retardant and anticorrosion wet chimney has the advantages that the wet chimney with the glass fiber reinforced plastic lining is radical technical innovation of wet chimney anticorrosion engineering; difficult problems of leakage and corrosion can be solved in wet chimney anticorrosion engineering by an anticorrosion technical solution for the smoke exhaust chimney with the integral glass fiber reinforced plastic lining, and the flame-retardant and anticorrosion wet chimney is the radical technical innovation of the wet chimney anticorrosion engineering and indicate a next-step development direction for smoke exhaust technologies for thermal power plants.

Description

technical field [0001] The invention relates to a wet chimney of a thermal power plant, in particular to a fire-resistant and anti-corrosion wet chimney. Background technique [0002] High chimneys (generally 180-270 meters in height) of thermal power plants are important structures. According to relevant regulations, they should meet the requirements of the structural design base period of 50 years and the process system design life of 30-35 years. At present, the problem of corrosion and leakage of wet chimneys in domestic thermal power plants is serious. Due to the quality of chimney anticorrosion materials, construction process control, project management, and variable operating conditions, a large number of desulfurization chimneys have been damaged and leaked to varying degrees. In 2009, the China Electric Power Planning and Design Institute conducted a survey of 226 chimneys that had undergone desulfurization transformation, including six categories and 13 anti-corro...

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Problems solved by technology

[0004] At home and abroad, FRP is widely used in anti-corrosion equipment and projects such as chemical industry, metallurgy, shipbuilding and aerospace. However, how to apply FRP to ultra-high chimneys in the power industry is currently being tested and explored everywhere. There are no mature technical reports on the fixed installation of the FRP lining of the wet chimney, and the overall product design, material selection, structural design of each part, connection structure, and lifting installation of the FRP flue.

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