【摘 要】
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Objectives PCDD/Fs are among the most toxic substances known to mankind.Maximum reduction and elimination of PCDD/Fs from the emission sources are the priority of many governments around the world.Cat
【机 构】
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W.L.Gore & Associates,Inc.,101 Lewisville Road,Elkton,MD 21921,USA.zxu@wlgore.com P.R.China
【出 处】
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第十届全国环境催化与环境材料学术会议
论文部分内容阅读
Objectives PCDD/Fs are among the most toxic substances known to mankind.Maximum reduction and elimination of PCDD/Fs from the emission sources are the priority of many governments around the world.Catalytic destruction is an effective method for reduction and elimination of dioxins.A catalytic filter system can replace existing conventional filters and effectively destroy the PCDD/Fs in the flue gas.Method REMEDIA(R) Catalytic Filter consists of an ePTFE membrane and a catalytic felt substrate.The GORE-TEX(R) ePTFE membrane captures sub-micron particulate,including heavy metals,thereby reducing emissions.The substrate is a needle-punched felt made from ePTFE fibers containing a proven dioxin-destroying catalyst.Main Findings Case study #1,an industrial solid waste incinerator in Taiwan.The plant employed both powdered activated carbon injection and the catalytic filter system to evaluate different technologies and meet the government regulation.After series of investigation and removal of the dioxin “memory effect” down stream of the dioxin treatment system,the catalytic filter system achieved PCDD/Fs emission of 0.097 ng TEQ/Nm3 at the baghouse outlet,below the emission limit of 0.5 ng TEQ/Nm3.Case study #2,a municipal solid waste incinerator in Japan.All three lines at the plant were equipped with the catalytic filter system in 2000 to meet the new dioxin regulation set by the Japanese government.The average inlet concentration of PCDD/Fs is 2.4 ng TEQ/Nm3,the PCDD/Fs emission at the stack is 0.012 ng TEQ/Nm3,and the dioxin destruction efficiency is 99.5%.Results REMEDIA(R) Catalytic Filter system has been applied in municipal solid waste incinerators,hazardous waste incinerators,and medical waste incinerators around the world to meet the stringent dioxin emission regulations.The system destroys PCDD/Fs with high efficiency.It can be easily applied to a new plant or an existing plant when dioxin emission is an issue.
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