I-Corps: Low carbon method of hydrogen gas production from hydrogen sulfide

I-Corps项目的更广泛影响/商业潜力是探索从硫化氢中生产氢气的环保方法，硫化氢是能源运营中常见的废物流。提取的碳氢化合物的硫含量在增加，这些重硫气体需要额外的处理。提出的技术以可持续的方式净化这种含硫重的气体。I-Corps项目的基础是开发一种从油气生产和加工设施中常见的富硫气体流中低碳生产氢气的技术。该技术是一种化学循环过程，通过碘中间体从硫化氢和水中产生氢。该工艺包括两个反应和两个分离步骤。第一步是硫化氢、水和碘的反应，产生氢碘酸和二氧化硫。第二步需要在高温下将含水混合物中的二氧化硫脱气。将混合物汽化，将碘化氢催化分解为氢气和碘。这个反应步骤已经得到了很好的探索，许多实验测试了各种催化剂和转化率。最后，流被冷却，氢气从碘、水和氢碘酸的混合物中快速分离出来。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this I-Corps project is to explore translation of environmentally friendly ways to produce hydrogen gas from hydrogen sulfide, a waste stream common in energy operations. The sulfur content of extracted hydrocarbons is increasing, and these sulfur-heavy gases require additional processing. The proposed technology cleans this sulfur-heavy gas in a sustainable process.This I-Corps project is based on the development of a technology for low carbon production of hydrogen gas from sulfur-rich gas streams common at oil and gas production and processing facilities. The technology is a chemical looping process that produces hydrogen from hydrogen sulfide and water via iodine intermediates. The process comprises two reaction and two separation steps. The first step is the reaction of hydrogen sulfide, water, and iodine to produce hydroiodic acid and sulfur dioxide. The second step requires the degassing of sulfur dioxide from the aqueous mixture at elevated temperatures. The mixture is vaporized and the hydrogen iodide is catalytically decomposed into hydrogen gas and iodine. This reaction step has been particularly well explored, with many experiments testing various catalysts and conversion rates. Finally, the stream is cooled, and hydrogen gas is flash separated from the mixture of iodine, water, and hydroiodic acid.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.