The glass fiber reinforced plastic anti-corrosion, heat insulation, light weight and high strength, can be used as a wet chimney lining for the desulfurization of coal-fired power plants without GGH. This paper discusses the application of FRP chimney at home and abroad, several key technical problems of FRP chimney in the application are discussed, and the application prospect of FRP chimney in coal-fired power plant are discussed, with the understanding of the FRP material deeply and practice of continuous exploration, the chimney will play an important FRP the role in the development of clean energy in china. Application prospect of FRP chimney in coal-fired power plant
The pollution problem of coal fired power plant flue gas has been paid more and more attention. In order to meet the national environmental regulations, while reducing the cost of the project, the major power generation companies generally use wet desulfurization (FGD) without the installation of flue gas heating system (GGH) process. The installation of FGD and GGH, the temperature of flue gas discharged into the chimney at about 50 DEG C, wet flue gas in chimney condensation formation of condensation acid solution, corrosion of chimney is greatly enhanced. In order to solve the problem of corrosion of wet chimney, it is necessary to find a kind of chimney which is resistant to acid corrosion, meets the requirement of structure, and is economical.
Glass steel (Fiberglass Reinforced Plastic), glass fiber reinforced plastic (FRP or GRP), is a new type of composite material by composite high strength glass fiber and resin and glass fiber, FRP provides strength and rigidity, chemical resistance and toughness of FRP resin. The glass fiber reinforced plastics has the advantages of light weight, high strength, chemical corrosion resistance, insulation and heat insulation, high temperature resistance, high strength and shape. The tensile strength of the glass fiber reinforced plastic structure is equivalent to that of ordinary steel, but the bulk density is only 1/4~1/5. The winding process of the production of glass steel chimney can be self-supporting, with more excellent acid resistant steel Binet sulfuric acid dew point corrosion resistance, can cancel the insulation layer, especially suitable for wet stack operating conditions of coal-fired power plant desulfurization without GGH.
Flue gas desulfurization, the development of clean energy is the trend. The glass fiber reinforced plastic composite material has the advantage of natural low temperature corrosion resistance. In the United States glass steel chimney 10~15% market share rate, application experience of over 30 years, the domestic design of FRP structure, processing and production has accumulated rich experience, can fully meet the need of the design and construction of FRP chimney. I believe that with our understanding of the FRP material intensive and continuous exploration and practice, FRP will make the best use of the chimney, to play its due role for the development of coal-fired power plant, wet chimney design ideas for the development of electric power industry clean energy in china. Application prospect of FRP chimney in coal-fired power plant