• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Studies on purification of yellow phosphorus off-gas by combined washing, catalytic oxidation, and desulphurization at a pilot scale
【24h】

Studies on purification of yellow phosphorus off-gas by combined washing, catalytic oxidation, and desulphurization at a pilot scale

机译：中试规模联合洗涤，催化氧化和脱硫净化黄磷废气的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The challenges of purification pretreatment process of yellow phosphorous off-gas could limit its application as chemical raw material gas to produce high accessional products. A pilot-scale experiment of the purification process, which included two sub-processes of caustic washing and catalytic oxidation, of yellow phosphorus off-gas was studied in this paper. The results indicated that HF and SO2 can be removed completely by the caustic washing process. In the process of catalytic oxidation purification, the reaction temperature and oxygen concentration of the off-gas were two crucial factors, through which the impurities were selectively oxidized. The concentrations of PH3, H2S, CS2, HF, SO2, and COS were less than 1 mg/m~3 in the off-gas of yellow phosphorus after the purification process under oxygen concentration of below 2%. Sulfur and phosphor compounds were oxidized to S and P4O10, respectively, in the catalytic oxidation process and adsorbed on the surface of catalysts. This purified gas was qualified to be used as feedstock in C1 chemistry. Furthermore, the deactivated catalysts were easily regenerated and their catalytic activity can be recovered after several regeneration cycles. This study provided evidence that CO derived from purified industrial off-gas could be used as the raw material of many products.
机译：黄磷废气净化预处理工艺的挑战可能会限制其作为化学原料气生产高附加产品的应用。本文研究了黄磷废气净化工艺的中试实验，该实验包括苛性洗涤和催化氧化两个子过程。结果表明，通过碱洗工艺可以完全除去HF和SO2。在催化氧化净化过程中，废气的反应温度和氧气浓度是两个关键因素，通过这些因素可以选择性地氧化杂质。氧气浓度低于2％时，纯化过程后的黄磷废气中PH3，H2S，CS2，HF，SO2和COS的浓度均小于1 mg / m〜3。硫和磷化合物在催化氧化过程中分别被氧化成S和P4O10，并被吸附在催化剂表面。该纯化的气体有资格在C1化学中用作原料。此外，失活的催化剂易于再生，并且在几个再生循环后可以恢复其催化活性。这项研究提供了证据，表明纯化的工业废气中产生的一氧化碳可以用作许多产品的原料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号