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Development of Sulfur-Producing Flue Gas Desulfurization (SP-FGD) Technology

机译：产硫烟气脱硫（SP-FGD）技术的发展

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摘要

Sulfur dioxide (SO_2) in flue gases is a major contributor to the acidification of our ecosystem. Removing SO_2 and converting it into useful products in an economically viable way are important and challenging tasks. Elemental sulfur is a desirable by-product for some SO_2 producers, particularly those located in remote areas, since it is easier to handle and transport. We developed a Na_2S-based two-step process which is capable of removing 99% SO_2 and producing elemental sulfur of high purity. In this process, H_2S is generated as an intermediate; elemental sulfur is then produced by reacting H_2S with SO_2 via the Claus reaction. One of the drawbacks of the process however is the use of the Clans plant which is often capital-intensive. Recently, our experiments on redox reactions in the Na_2S-SO_2 system show that it is possible to fix sulfur dioxide as elemental sulfur in a single step, i.e. without a Claus plant. In this paper, the existing SP-FGD technologies are reviewed. The single-step SP-FGD process is introduced following the discussion on the behavior of the Na_2S-SO_2 system at low temperatures, Finally. future research needs are presented.
机译：烟道气中的二氧化硫（SO_2）是造成我们生态系统酸化的主要因素。去除SO_2并以经济可行的方式将其转化为有用的产品是重要且具有挑战性的任务。对于某些SO_2生产商，尤其是偏远地区的SO_2生产商而言，元素硫是理想的副产品，因为它更易于处理和运输。我们开发了一种基于Na_2S的两步工艺，该工艺能够去除99％的SO_2并生产高纯度的元素硫。在此过程中，生成了H_2S作为中间体。然后通过克劳斯反应使H_2S与SO_2反应生成单质硫。然而，该方法的缺点之一是使用了经常需要大量资金的氏族工厂。最近，我们在Na_2S-SO_2系统中的氧化还原反应实验表明，有可能在一个步骤中，即没有克劳斯装置的情况下，将二氧化硫固定为元素硫。本文对现有的SP-FGD技术进行了回顾。在讨论了Na_2S-SO_2系统在低温下的行为之后，介绍了单步SP-FGD工艺。提出了未来的研究需求。

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  • 来源
    《》|1998年|269-279|共11页
  • 会议地点 Pittsburgh PA(US)
  • 作者

    Charles Q. Jia; Wei-Kao Lu;

  • 作者单位

    Department of Chemical Engineering and Applied Chemistry University of Toronto 200 College Street. Toronto, Ontario. Canada M5S 3E5;

    Department of Materials Science and Engineering McMaster University 1280 Main Street West. Hamilton. Ontario, Canada L8S 4L7;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生产技术管理;
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