• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Chemical Recovery Conference v.1; 20040606-20040610; Charleston,SC; US >Sulfur and Nitrogen Compounds in Rectified Methanol from Foul Condcnsate Stripping
【24h】

Sulfur and Nitrogen Compounds in Rectified Methanol from Foul Condcnsate Stripping

机译：冷凝水汽提中精制甲醇中的硫和氮化合物

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

Gas chromatography mass spectrometry was used to identify volatile organic impurities in rectified methanol, derived from foul condensate stripping at kraft pulp mills. They were also analyzed for total and ammonium nitrogen. The methanol samples were derived from the mills pulping different raw materials, i.e. spruce, eucalyptus, and birch wood chips. Altogether, more than 150 different compounds were identified or partially characterized. These included various aliphatic alcohols and ketones, terpenes, sulfur and nitrogen compounds, and other types of compounds. The sulfur compounds included sulfides, thiols, thiophenes, and bis(methylthio)alkanes. Many of the identified novel or rare sulfur compounds, such as 4-mercapto-4-methyl-2-pentanone and 1 - (methylthio)ethanethiol, may significantly contribute to the pungent odor of the rectified methanols. Ammonia was the main nitrogen compound, making up 85-95% of the total nitrogen content of 10-20 g/l in the methanols. In addition, several organic nitrogen compounds were identified or partially characterized. The high nitrogen content needs to be taken into account when selecting combustion sites and technology for methanol as that may contribute to the mill's overall nitrogen oxide emissions.
机译：气相色谱质谱法用于鉴定精制甲醇中的挥发性有机杂质，这些杂质来自牛皮纸制浆厂的冷凝水汽提。还分析了它们的总氮和铵态氮。甲醇样品来自工厂，它们将不同的原料，即云杉，桉树和桦木碎屑制成纸浆。总共鉴定或部分鉴定了150多种不同的化合物。这些包括各种脂肪族醇和酮，萜烯，硫和氮化合物以及其他类型的化合物。硫化合物包括硫化物，硫醇，噻吩和双（甲硫基）烷烃。许多已鉴定的新颖或稀有的硫化合物，例如4-巯基-4-甲基-2-戊酮和1-（甲硫基）乙硫醇，可能会极大地影响精馏甲醇的刺激性气味。氨是主要的氮化合物，占甲醇中10-20 g / l的总氮含量的85-95％。另外，鉴定或部分表征了几种有机氮化合物。选择甲醇的燃烧地点和技术时，必须考虑高氮含量，因为这可能会导致工厂的总氮氧化物排放量增加。

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