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首页> 外文会议>32nd Annual Hydrometallurgy Meeting and International Conference on the Practice and Theory of Chloride/Metal Interaction, Vol.1 Oct 19-23, 2002 Montreal, Quebec, Canada >Regenerative Thermal Oxidation for Non-Conventional Applications and Chlorinated Gaseous Emissions
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Regenerative Thermal Oxidation for Non-Conventional Applications and Chlorinated Gaseous Emissions

机译：非常规应用的再生热氧化和氯化气排放

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摘要

Regenerative Thermal Oxidation (RTO) is a method used to treat non-conventional emissions containing various chlorinated gaseous compounds. These gaseous emissions include pollutants such as Total Reduced Sulphur (TRS), Poly-Aromatic Hydrocarbons (PAH), chlorobenzene, dioxins and furans. In the pulp and paper industry, environmental legislation for TRS and Volatile Organic Compounds (VOC), such as methanol, turpentine and some chlorinated gaseous compounds, has led to the need for incinerators with a high destruction efficiency and thermal performance. The first installation in Canada utilising Regenerative Thermal Oxidation (RTO) was started up in early 1997 at a kraft pulp mill in the province of Quebec. In plant testing demonstrated a TRS reduction of 99.6% and a thermal efficiency of 88.5%. RTO is considered as the Best Available Control Technology (BACT) to comply with the new norms for atmospheric TRS emissions in the pulp and paper industry. In the primary aluminium process, a distinct improvement in anode properties can be gained by preparing the electrode paste at high temperature, followed by water cooling in an intensive mixer. Unfortunately, the addition of cooling water results in a large increase in the emissions of both PAH compounds and light VOC, such as benzene, naphthalene and benzo-a-pyrene. An unproved RTO unit was installed in 1997 in an aluminium plant in Canada. The emissions of VOC's and PAH's from the mixer-cooler were reduced by more than 99.8% while all troublesome particulates in the off gas system were also eliminated. Continued RTO developments has introduced this technology into a magnesium production process to treat emissions containing Poly-Chlorinated Biphenyl (PCB), HCl, dioxin and furans. In all these non-conventional applications, special features were developed to handle adverse operating conditions such as the presence of SO_2, SO_3 or sulphuric acid, condensable organic matter in very high concentrations, PCB, PAH, dioxins and furans.
机译：再生热氧化（RTO）是一种用于处理包含各种氯化气态化合物的非常规排放物的方法。这些气体排放物包括污染物，例如总还原硫（TRS），多芳烃（PAH），氯苯，二恶英和呋喃。在纸浆和造纸工业中，TRS和挥发性有机化合物（VOC）（例如甲醇，松节油和某些氯化气态化合物）的环境法规导致对焚烧炉的破坏效率和热性能要求很高。加拿大第一套利用再生热氧化（RTO）的装置于1997年初在魁北克省的一家牛皮纸制浆厂投入使用。在工厂测试中，TRS降低了99.6％，热效率达到了88.5％。 RTO被认为是符合纸浆和造纸行业大气TRS排放新规范的最佳可用控制技术（BACT）。在一次铝工艺中，通过在高温下制备电极浆料，然后在强力混合器中进行水冷，可以显着改善阳极性能。不幸的是，添加冷却水导致PAH化合物和轻型VOC（例如苯，萘和苯并a-a）的排放量大大增加。 1997年，未经验证的RTO装置安装在加拿大的一家铝厂中。混合冷却器中的VOC和PAH排放量减少了99.8％以上，同时还消除了废气系统中所有麻烦的微粒。 RTO的不断发展将这项技术引入了镁生产工艺中，以处理含有多氯联苯（PCB），HCl，二恶英和呋喃的排放物。在所有这些非常规应用中，都开发出特殊功能来处理不利的操作条件，例如存在SO_2，SO_3或硫酸，高浓度可冷凝有机物，PCB，PAH，二恶英和呋喃。

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