A Synergistic Approach to the Development of Improves and Alternative Methods for the Synthesis and Processing of Sulfolanes

开发环丁砜合成和加工改进和替代方法的协同方法

• 批准号: 9216834
• 负责人: Karen High
• 金额: $ 28万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9216834&HistoricalAwards=false
• 关键词: Synergistic; Approach; Development; Improves; Alternative

The purpose of this research is to develop a general strategy for attacking environmental waste problems in industrial processes, that include process design and optimization, application of catalytic and alternative chemistry, reduction in the use of toxic chemicals, recycling, and recovery to eliminate waste at its source. The PIs plan to apply process design techniques, an improved understanding of process chemistry, and newly developed synthetic and catalytic chemistries to improve the energy efficiency and cost effectiveness of the process to produce sulfolane (as an example process), while minimizing waste. The anticipated benefits include: (1) the development of alternative processes, chemistries, and approaches that could be used to attack environmental and energy problems associated with other industrial processes, and (2) the development of models for considering environmental costs in process design and optimization and exposing chemists to the need to consider energy efficiency, by-product production, and waste generation and disposal in the design of chemical reactions. Sulfolane a colorless, water soluble, non-toxic, bio- degradable, and highly polar compound, derives its market value from its exceptional thermal stability, chemical inertness, and solvent properties. Eighteen to twenty million pounds of sulfolane are consumed annually in a variety of applications including extraction of aromatic hydrocarbons, delignification of wood, removal of acidic compounds from natural gas streams, and solutions for polymerization and fibre spinning, electroplating baths, and batteries. In the next several years, regulatory changes and the movement to "environmentally improve" industrial processes could possibly increase the market for sulfolanes by 50% or more. Currently, sulfolane is produced via the reaction of 1,3-butadiene with sulfur dioxide to produce 3-sulfolene, which then undergoes catalytic hydrogenation to yield sulfolane. These reactions are carried out in series in two batch stirred tank reactors. Reaction temperatures are maintained by passing water or steam through heating jackets around each reactor. The first step in the synthesis requires excess sulfur dioxide and is plagued by polysulfone-producing side reactions that limit process yield, poison the hydrogenation catalyst, and present waste disposal problems. Removal of the excess sulfur dioxide by evacuating or purging the reactor and oxidation reactions which produce SOx by-products creates emission problems. The development of improved and alternative methods for the synthesis and processing of sulfolane could eliminate or minimize these environmental concerns, improve energy efficiency, and reduce product cost. Phillips Petroleum, one of the two domestic producers of sulfolane, will be actively involved in this research project.

这项研究的目的是制定一种在工业过程中攻击环境废物问题的一般策略，其中包括过程设计和优化，催化和替代化学的应用，减少使用有毒化学物质的使用，回收利用和恢复以消除其来源的废物。 PIS计划采用过程设计技术，对过程化学的改进理解，以及新开发的合成和催化化学，以提高生产磺酸盐的过程的能效和成本效益（作为示例过程），同时最大程度地减少废物。 预期的好处包括：（1）开发替代过程，化学成分以及可用于攻击与其他工业过程相关的环境和能源问题的方法，以及（2）开发用于考虑过程设计和优化中环境成本的模型的开发，并将化学家暴露于考虑能源效率的需求，以及在化学反应中的产生和浪费和分配。 硫酸盐无色，水溶性，无毒，可生物降解和高极性化合物从其出色的热稳定性，化学惰性和溶剂特性中获得其市场价值。 每年在各种应用中消耗18至2亿磅的磺酸盐，包括提取芳族碳氢化合物，木材的脱去，从天然气流中去除酸性化合物，以及用于聚合和纤维旋转的溶液，旋转，电镀浴和浴缸。 在接下来的几年中，监管变化和“环境改善”工业过程的转变可能会使硫酸盐的市场增加50％或更多。 目前，磺酸盐是通过1,3-丁二烯与二氧化硫的反应产生的，以产生3-硫酸盐，然后经过催化氢化以产生磺酸盐。 这些反应是在两个批次搅拌的储罐反应器中串联进行的。 通过将水或蒸汽通过每个反应器周围的加热夹克来维持反应温度。 合成的第一步需要过量的二氧化硫，并受到产生多硫酮的副反应的困扰，这些副反应限制了过程产量，中毒催化催化剂并提供了废物处理问题。 通过撤离或清除反应器和产生Sox副产品的氧化反应来清除多余的二氧化硫，从而造成排放问题。 改进和替代方法的合成和加工磺酸盐的替代方法可以消除或最小化这些环境问题，提高能源效率并降低产品成本。 菲利普斯石油公司（Phillips Petroleum）是两个国内生产商之一，将积极参与该研究项目。