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Effective abatement of VOC and CO from acrylic acid and related production waste gas by catalytic oxidation

机译:通过催化氧化有效地消除丙烯酸和相关生产废气中的VOC和CO

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摘要

Waste gasses containing volatile organic compounds (VOC) are arising mainly form industrial production in which organic materials are processed. These VOC must be treated to levels so that they meet the local applicable legislation limits. Momentive specialty chemicals is a company which produces acrylic acid, acrylic acid esters, and acrylate polymers in Sokolov (Czech Republic). A mixed waste stream which contains 6,000-10,000 mg TOC/Nm3 of VOC is treated. The management would like to lower the operating costs of the thermal incineration unit used. It seems suitable in this case to replace the existing incinerator with a catalytic oxidation unit with use of a Pt-Pd/Al_2O_3 catalyst for VOC abatement. A full-scale unit was designed according to the waste gas composition and flow. Mass and energy balances were carried out, and it was discovered that the catalytic bed must be divided into two parts to prevent the reactor overheating and irreversible damage to the catalyst. A pilot plant was designed and implemented due to the potential threat of catalyst fouling by solid impurities and to confirm the expected conversion of VOC and CO. It also proves the long-term reliability of the catalytic reactor. The performed pilot tests confirmed that catalytic oxidation is suitable for the disposal of waste gas from acrylic acid and acrylates production (for this application and treated inlet concentration of VOC). VOC and CO removal efficiencies during pilot trials were 98.3 and 98.5 %, respectively.
机译:含有挥发性有机化合物(VOC)的废气主要来自工业生产,在其中加工有机材料。必须对这些VOC进行处理,以使其符合当地适用的法规限制。 Momentive特种化学品公司是在Sokolov(捷克共和国)生产丙烯酸,丙烯酸酯和丙烯酸酯聚合物的公司。处理包含6,000-10,000 mg TOC / Nm3 VOC的混合废物流。管理层希望降低所用热焚烧装置的运行成本。在这种情况下,用Pt-Pd / Al_2O_3催化剂减少VOC的催化氧化装置代替现有的焚化炉似乎是合适的。根据废气的组成和流量设计了一个满量程的装置。进行了质量和能量平衡,发现必须将催化床分为两部分,以防止反应器过热和对催化剂的不可逆损坏。由于存在潜在的固体杂质污染催化剂的潜在威胁,并设计并实施了中试装置,以确认VOC和CO的预期转化率。这也证明了催化反应器的长期可靠性。进行的中试测试证实,催化氧化适用于处理丙烯酸和丙烯酸酯生产中的废气(对于该应用和经处理的VOC入口浓度)。试点试验期间的VOC和CO去除效率分别为98.3%和98.5%。

著录项

  • 来源
    《Clean technologies and environmental policy》 |2014年第7期|1329-1338|共10页
  • 作者单位

    Institute of Process and Environmental Engineering, Brno University of Technology, Technicka 2896/2, 61669 Brno, Czech Republic;

    Institute of Process and Environmental Engineering, Brno University of Technology, Technicka 2896/2, 61669 Brno, Czech Republic;

    Institute of Process and Environmental Engineering, Brno University of Technology, Technicka 2896/2, 61669 Brno, Czech Republic;

    Momentive Specialty Chemicals Leuna GmbH & Co. KG, Am Haupttor, Bau 6101, 06237 Leuna, Germany;

    Institute of Process and Environmental Engineering, Brno University of Technology, Technicka 2896/2, 61669 Brno, Czech Republic;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    VOC; Catalytic oxidation; Pilot unit; Full-scale unit; Design; Deep oxidation;

    机译:VOC;催化氧化;试点单位;满量程单位;设计;深层氧化;

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