US-Egypt Cooperative Research: A New Process for Converting SO2 to Sulfur Without Generating Secondary Pollutants Through Reactions With CaS/CaSO4 Pellets

美埃合作研究：通过与CaS/CaSO4颗粒反应将SO2转化为硫而不产生二次污染物的新工艺

• 批准号: 0315814
• 负责人: H. Y. Sohn
• 金额: $ 3万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315814&HistoricalAwards=false
• 关键词: US; Egypt; Cooperative; Research; New

0315814SohnDescription: This award is to support a cooperative research project between Dr. H.Y. Sohn, Department of Metallurgical Engineering, University of Utah, Salt lake City, Utah and Dr. Yasser Ahmed, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt. Large quantities of sulfur dioxide are generated from different industries often causing serious air pollution. The PIs plan to develop a new process for converting sulfur dioxide to elemental sulfur without generating solid wastes or gaseous pollutants. It involves reacting sulfur dioxide with calcium sulfide to produce elemental sulfur, and reducing the produced calcium sulfate by reformed natural gas or hydrogen to regenerate the calcium sulfide. This cyclic reaction scheme has been conceived based on thermodynamic analyses of possible reaction systems that can transform sulfur dioxide to elemental sulfur without generating gaseous or solid wastes. The advantage of this proposed process is that little gaseous product other than sulfur is produced in the first reaction, and calcium sulfide and harmless gases such as water vapor are the only products in the second reaction. The research will involve the determination of the rates of the reactions under various conditions. Since the solids will be used repeatedly in the process, the reactivity of the regenerated calcium sulfide with sulfur dioxide over many regeneration cycles will be determined. Additionally, catalysts that are effective in increasing the rate of the SO2 reduction reaction will be selected and their effectiveness tested. Scope: The research seeks a solution to a serious problem that many industrial nations are facing. The development of an effective method for transforming sulfur dioxide to elemental sulfur is the ultimate objective. The proposed collaboration is between an educational institution and a research organization, and as such will combine the aspects of learning, teaching and training current and future researchers. The students will learn the theoretical and laboratory approaches to technical development and also how the results are further evaluated toward implementation. The researchers in the participation research organization will maintain their contact with academic laboratory and sharpen their skills in fundamental theoretical approach to research and problem solving. The results of this work will be disseminated widely through technical publications, international workshops, multidisciplinary meetings, and news media in view of their environmental implications and international importance. The proposed laboratory work at the University of Utah will be performed by a female graduate engineering student (Maria Savic). This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.

0315814sohn描述：该奖项旨在支持犹他州盐湖城犹他大学冶金工程系H.Y. Sohn博士与埃及赫尔万中央冶金研究与发展研究所（CMRDI） Yasser Ahmed博士之间的合作研究项目。不同的工业产生大量的二氧化硫，经常造成严重的空气污染。PIs计划开发一种新工艺，将二氧化硫转化为单质硫，而不产生固体废物或气体污染物。它包括二氧化硫与硫化钙反应产生单质硫，并通过转化天然气或氢气还原产生的硫酸钙以再生硫化钙。这种循环反应方案是基于对可能的反应系统的热力学分析而提出的，这些反应系统可以将二氧化硫转化为单质硫，而不会产生气态或固体废物。这种方法的优点是在第一次反应中除了硫之外几乎不产生气态产物，而在第二次反应中只产生硫化钙和水蒸气等无害气体。这项研究将包括测定各种条件下的反应速率。由于固体将在该过程中反复使用，因此将确定再生的硫化钙与二氧化硫在许多再生循环中的反应性。此外，还将选择能有效提高二氧化硫还原反应速率的催化剂，并对其有效性进行测试。范围：这项研究寻求解决许多工业国家面临的一个严重问题。开发一种将二氧化硫转化为单质硫的有效方法是最终目标。拟议的合作是在一个教育机构和一个研究组织之间进行的，因此将结合学习、教学和培训当前和未来的研究人员的各个方面。学生将学习技术开发的理论和实验方法，以及如何进一步评估实施结果。参与研究机构的研究人员将与学术实验室保持联系，提高他们在研究和解决问题的基本理论方法方面的技能。鉴于其环境影响和国际重要性，这项工作的结果将通过技术出版物、国际讲习班、多学科会议和新闻媒介广泛传播。犹他大学的实验室工作将由一名女工程研究生（Maria Savic）完成。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。