SBIR Phase I: Electrochemical Chlorine Purification

SBIR 第一阶段：电化学氯纯化

• 批准号: 9960540
• 负责人: Srinivasan Sarangapani
• 金额: $ 10万
• 依托单位: ICET, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9960540&HistoricalAwards=false
• 关键词: SBIR; Phase; Electrochemical; Chlorine; Purification

This Small Business Innovation Research Phase I project will develop a novel electrochemical method of purification of "tail" gas, also known as vent or sniff gas. About half of the chlorine produced in the chlor-alkali industry is liquefied, stored, and shipped. The tail gas from the liquefaction process contains chlorine (Cl2) with oxygen (O2), nitrogen (N2), carbon dioxide (CO2), and hyrogen (H2) as impurities. Phase I involves reduction of Cl2 from the impure chlorine stream at a gas diffusion or porous flow-through type cathode. The product HCl is anodically oxidized to generate chemically pure Cl2. The other impurities in the impure Cl2 gas stream, e.g., N2, CO2, are either not reducible at the cathode or their reduction is too low to be significant. The objective of Phase I is high current density.operation, delineating the effects of impurities in the chlorine on cathode performance, and minimizing the contribution of parasitic reactions at the anode.Commercially relevant benefits include: material conservation (Cl2 is not wasted), reduction in energy consumption relative to other technologies, elimination of waste gas streams, and generation of pure Cl2.

这个小型企业创新研究第一阶段项目将开发一种净化“尾”气（也称为排气或嗅气）的新型电化学方法。 氯碱工业生产的氯大约有一半被液化、储存和运输。 液化过程中产生的尾气含有氯气(Cl2)以及氧气(O2)、氮气(N2)、二氧化碳(CO2)和氢气(H2)等杂质。 第一阶段涉及在气体扩散或多孔流通型阴极处还原不纯氯流中的 Cl2。 产品HCl被阳极氧化生成化学纯Cl2。 不纯 Cl2 气流中的其他杂质，例如 N2、CO2，要么在阴极处不可还原，要么它们的还原太低而无法显着。 第一阶段的目标是高电流密度操作，描述氯中的杂质对阴极性能的影响，并最大限度地减少阳极寄生反应的影响。商业相关的好处包括：节省材料（不浪费Cl2）、相对于其他技术减少能耗、消除废气流以及生成纯Cl2。