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>vwinchina德赢> Membrane technology could cut emissions and energy use in oil refining

New membrane technology could reduce carbon emissions and energy intensity associated with refining crude oil. Georgia Tech Associate Professor Ryan Lively shows a module containing the new membrane material, while Professor M.G. Finn holds vials containing some of the other polymers used in this study.  CREDIT Christopher Moore, Georgia Tech
New membrane technology could reduce carbon emissions and energy intensity associated with refining crude oil. Georgia Tech Associate Professor Ryan Lively shows a module containing the new membrane material, while Professor M.G. Finn holds vials containing some of the other polymers used in this study. CREDIT Christopher Moore, Georgia Tech

Abstract:
新的膜技术开发的一队来自乔治亚技术研究所,英国伦敦帝国学院的研究人员,以及埃克森美孚公司可以帮助减少精制原油相关的碳排放和能源强度。实验室试验表明,这种聚合物膜技术可以在将来替换一些常规基于热的蒸馏方法。

Membrane technology could cut emissions and energy use in oil refining

Atlanta, GA | Posted on July 17th, 2020

使用基于热的蒸馏原油混合物的分馏是大规模,高能耗过程,几乎占1%的世界能源使用的:每年1100瓦时(太瓦/年),这相当于总能源消耗由纽约一年的状态。通过替换低能量膜在蒸馏过程中的某些步骤,新技术有朝一日可能允许执行混合精制系统,可以帮助减少碳排放和能源消耗显著相比传统工序精制而成。

“很多在我们的现代生活来自石油,所以这些分子的分离使我们的现代文明的可能,” M.G.说芬兰人,化学和生物化学的佐治亚理工学院的学院教授和椅子。芬兰人也适用于小儿科技的詹姆斯·卡洛斯家庭主席。“分离的规模,需要提供我们使用的是非常大的产品。这种膜技术可以使全球能源消耗和所产生的石油加工的排放量显著的影响。”

To be reported in the July 17 issue of the journal Science, the paper is believed to be the first report of a synthetic membrane specifically designed for the separation of crude oil and crude-oil fractions. Additional research and development will be needed to advance this technology to industrial scale.

膜技术已经广泛应用在这类应用海水淡化,但石油炼制的复杂性直到现在限制了膜的使用。为了克服这一挑战,研究小组开发了施加到健壮衬底上以产生能够通过的压力,而不是热施加到复杂的烃混合物中分离的膜的新型螺环聚合物。

膜根据诸如尺寸和形状的差异从混合物中分离分子。当分子的大小很接近,即分离变得更具挑战性。使用用于制备氮和碳原子之间的键的公知方法中,将聚合物通过连接具有扭结结构构建块以创建具有无序材料构成内置的空隙空间。

该小组能够平衡各种因素,以产生溶解性的正确组合 - 使通过简单的,可扩展的处理来形成的膜 - 和结构刚度 - 允许一些小分子比其他人更容易地穿过。出乎意料的是,研究人员发现,所需材料的结构柔性的少量改进大小鉴别,以及稍微“粘性”对某些类型的分子被发现大量原油的能力。

After designing the novel polymers and achieving some success with a synthetic gasoline, jet fuel, and diesel fuel mixture, the team decided to try to separate a crude oil sample and discovered that the new membrane was quite effective at recovering gasoline and jet fuel from the complex mixture.

"We were initially trying to fractionate a mixture of molecules that were too similar," said Ben McCool, a senior research associate at ExxonMobil and one of the paper's coauthors. "When we took on a more complex feed, crude oil, we got fractionalization that looked like it could have come from a distillation column, indicating the concept's great potential."

研究人员通力合作,with polymers designed and tested at Georgia Tech, then converted to 200-nanometer-thick films, and incorporated into membrane modules at Imperial using a roll-to-roll process. Samples were then tested at all three organizations, providing multi-lab confirmation of the membrane capabilities.

"We have the foundational experience of bringing organic solvent nanofiltration, a membrane technology becoming widely used in pharmaceuticals and chemicals industries, to market," said Andrew Livingston, professor of chemical engineering at Imperial. "We worked extensively with ExxonMobil and Georgia Tech to demonstrate the scalability potential of this technology to the levels required by the petroleum industry."

The research team created an innovation pipeline that extends from basic research all the way to technology that can be tested in real-world conditions.

“我们汇集了基础科学和化学,应用过滤器的制造基础和膜是如何工作的工程分析,”瑞恩活泼,副教授和John H.伍迪教职研究员在化学和生物分子工程佐治亚理工学院的学校说。“我们能够从毫克级粉末一路去那个被质疑与真正的原油商业外形样机膜组件 - 这是梦幻般的在行动中看到这种创新渠道”

埃克森美孚公司与佐治亚技术关系可以追溯到近15年,并在产生的其它分离技术,包括一个新的基于碳的分子筛膜,可以显着地降低以分离一类称为烷基芳族化合物的烃分子所需的能量的创新。

“通过与浓厚的学术机构,如佐治亚理工学院和帝国的合作,我们正在不断努力开拓未来的低排放的能源解决方案,”维杰Swarup,埃克森美孚研究与工程公司研发副总裁。

###

除了芬兰,利文斯顿,生动,麦库尔,论文的作者包括寇汤普森和Ronita马蒂亚斯,佐治亚理工学院研究生谁是共同第一作者;Daeok金,金志勋,艾琳Bechis,安德鲁Tarzia,和帝国的金Jelfs;和尼尔Rangnekar,J.R.约翰逊,以及埃克森美孚公司的斯科特·霍伊。

CITATION: Kirstie Thompson, et al., "N-Aryl Linked Spirocyclic Polymers for Membrane Separations of Complex Hydrocarbon Mixtures" (Science 2020)

####

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