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pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering emulsions and enhance oilrecovery

《化学科学与工程前沿(英文)》 2022年 第16卷 第7期   页码 1101-1113 doi: 10.1007/s11705-021-2095-1

摘要: Nanoparticles with high surface energy and chemical activity have drawn substantial attention in petroleum industry. Recently, Janus nanoparticles exhibited tremendous potential in enhanced oil recovery (EOR) due to their asymmetric structures and properties. In this study, a series of amphiphilic pseudo-Janus@OTAB (PJ@C18) nanoparticles with different concentrations of stearyltrimethylammoium bromide (OTAB) were successfully fabricated. The structures and properties of PJ@C18 were characterized by Fourier transform infrared spectroscopy and ζ-potential measurements. Based on the emulsification experimental results, the interaction models and the self-assembly behavior between hydrophilic nanoparticles (SiO2@NH2) and OTAB molecules at the oil/water interface were proposed, which was further confirmed via the measurements of the contact angle and dynamic interfacial tension. Interestingly, it was found that the change of pH value from 7.5 to 4.0 caused the type reversal of the PJ@C18-1000 stabilized Pickering emulsions. Furthermore, the PJ@C18-1000 stabilized Pickering emulsion system with excellent salt and temperature tolerances (10000 mg∙L–1, 90 °C) significantly improved the oil recovery in the single-tube (more than 17%) and double-tube (more than 25%) sand pack model flooding tests. The findings of this study could help to better understand the construction mechanism of pseudo-Janus silica/surfactant assembly and the potential application of PJ@C18-1000 stabilized Pickering emulsions for EOR.

关键词: Janus nanoparticles     surfactant     double phase inversion     self-assembly     enhanced oil recovery    

干热岩辅助采油可行性研究

王学忠

《中国工程科学》 2011年 第13卷 第3期   页码 104-106

摘要:

为降低稠油热采成本,以燃烧原油生产蒸汽进行热力开采的开发方式需要改变,同时需要减少注入水对油层造成的冷伤害,因此开展了干热岩辅助采油可行性研究。干热岩辅助采油技术是利用干热岩抽取地下热能加热油层,以降低原油粘度、提高原油流动能力。在技术配套方面,无论钻深井,还是稠油热采技术,都是成熟的。干热岩的热能源于核幔边界的地热,分布广泛、清洁、可再生。研究表明,干热岩辅助采油技术针对性较强,是对现有蒸汽吞吐+蒸汽驱热采技术的有效继承,技术上具有可行性,并有可能推动相关技术的发展,符合中国节能减排的基本国策。建议在有利区块率先开展先导试验。

关键词: 干热岩辅助采油     冷伤害     热采稠油     热水驱     水热裂解    

A review on the application of nanofluids in enhanced oil recovery

《化学科学与工程前沿(英文)》 2022年 第16卷 第8期   页码 1165-1197 doi: 10.1007/s11705-021-2120-4

摘要: Enhanced oil recovery (EOR) has been widely used to recover residual oil after the primary or secondary oil recovery processes. Compared to conventional methods, chemical EOR has demonstrated high oil recovery and low operational costs. Nanofluids have received extensive attention owing to their advantages of low cost, high oil recovery, and wide applicability. In recent years, nanofluids have been widely used in EOR processes. Moreover, several studies have focused on the role of nanofluids in the nanofluid EOR (N-EOR) process. However, the mechanisms related to N-EOR are unclear, and several of the mechanisms established are chaotic and contradictory. This review was conducted by considering heavy oil molecules/particle/surface micromechanics; nanofluid-assisted EOR methods; multiscale, multiphase pore/core displacement experiments; and multiphase flow fluid-solid coupling simulations. Nanofluids can alter the wettability of minerals (particle/surface micromechanics), oil/water interfacial tension (heavy oil molecules/water micromechanics), and structural disjoining pressure (heavy oil molecules/particle/surface micromechanics). They can also cause viscosity reduction (micromechanics of heavy oil molecules). Nanofoam technology, nanoemulsion technology, and injected fluids were used during the EOR process. The mechanism of N-EOR is based on the nanoparticle adsorption effect. Nanoparticles can be adsorbed on mineral surfaces and alter the wettability of minerals from oil-wet to water-wet conditions. Nanoparticles can also be adsorbed on the oil/water surface, which alters the oil/water interfacial tension, resulting in the formation of emulsions. Asphaltenes are also adsorbed on the surface of nanoparticles, which reduces the asphaltene content in heavy oil, resulting in a decrease in the viscosity of oil, which helps in oil recovery. In previous studies, most researchers only focused on the results, and the nanoparticle adsorption properties have been ignored. This review presents the relationship between the adsorption properties of nanoparticles and the N-EOR mechanisms. The nanofluid behaviour during a multiphase core displacement process is also discussed, and the corresponding simulation is analysed. Finally, potential mechanisms and future directions of N-EOR are proposed. The findings of this study can further the understanding of N-EOR mechanisms from the perspective of heavy oil molecules/particle/surface micromechanics, as well as clarify the role of nanofluids in multiphase core displacement experiments and simulations. This review also presents limitations and bottlenecks, guiding researchers to develop methods to synthesise novel nanoparticles and conduct further research.

关键词: nanofluid     EOR mechanism     nanoparticle adsorption     interface property     internal property    

从绿色化学的角度提高石油采收率——通过二氧化碳泡沫进行封存 Perspective

Jennifer A. Clark, Erik E. Santiso

《工程(英文)》 2018年 第4卷 第3期   页码 336-342 doi: 10.1016/j.eng.2018.05.006

摘要:

通过二氧化碳(CO2)驱油来提高石油采收率(EOR),这作为一种经济上可行的碳封存方法受到了相当大的关注,并且最近许多研究都集中在开发增强的CO2发泡添加剂上。然而,人们对这些添加剂在泄漏事件中潜在的长期环境影响知之甚少,并且考虑到在典型的CO2 EOR操作中注入添加剂的量,其对环境的影响可能是深远的。本文概述了表面活性剂和表面活性剂/基于纳米颗粒的二氧化碳发泡体系的最新发展情况,重点介绍了CO2泡沫泄漏可能对环境造成的影响。所研究的大多数表面活性剂在油藏条件下不可能降解,并且它们的释放可能对野生动物造成严重的负面影响。随着近来添加剂使用(如非离子表面活性剂、纳米颗粒和其他化学品)的进展,可能不再允许使用苛刻的阴离子表面活性剂。本文讨论了生产泡沫系统的最新进展,并着重介绍了开发环境友好型CO2 EOR方法的可能策略。

关键词: 表面活性剂     纳米粒子     碳封存     提高石油采收率    

Predicting the yield of pomegranate oil from supercritical extraction using artificial neural networks

J. Sargolzaei, A. Hedayati Moghaddam

《化学科学与工程前沿(英文)》 2013年 第7卷 第3期   页码 357-365 doi: 10.1007/s11705-013-1336-3

摘要: Various simulation tools were used to develop an effective intelligent system to predict the effects of temperature and pressure on an oil extraction yield. Pomegranate oil was extracted using a supercritical CO (SC-CO ) process. Several simulation systems including a back-propagation neural network (BPNN), a radial basis function neural network (RBFNN) and an adaptive-network-based fuzzy inference system (ANFIS) were tested and their results were compared to determine the best predictive model. The performance of these networks was evaluated using the coefficient of determination ( ) and the mean square error (MSE). The best correlation between the predicted and the experimental data was achieved using the BPNN method with an of 0.9948.

关键词: oil recovery     artificial intelligence     extraction     neural networks     supercritical extraction    

Design and application of a novel coal-fired drum boiler using saline water in heavy oil recovery

Junping GU, Yuxin WU, Liping WU, Man ZHANG, Hairui YANG, Junfu LYU

《能源前沿(英文)》 2020年 第14卷 第4期   页码 715-725 doi: 10.1007/s11708-020-0690-3

摘要: In this paper, the design and operation of a novel coal-fired circulating fluidized bed (CFB) drum boiler that can generate superheated steam using saline water were introduced. The natural circulation water dynamics with a drum was adopted instead of the traditional once-through steam generator (OTSG) design, so that superheated steam can be generated for the better performance of the steam assisted gravity drainage (SAGD) technology in heavy oil recovery. The optimized staged evaporation method was proposed to further decrease the salinity of water in the clean water section of the boiler. The evaporating pipes of the salted water section were rearranged in the back pass of the boiler, where the heat load is low, to further improve the heat transfer safety. A CFB combustion technology was used for coal firing to achieve a uniform heat transfer condition with low heat flux. Pollutant control technologies were adopted to reduce pollutant emissions. Based on the field test, the recommended water standard for the coal-fired CFB drum boilers was determined. With the present technology, the treated recovery wastewater can be reused in steam-injection boilers to generate superheated steam. The engineering applications show that the boiler efficiency is higher than 90%, the blowdown rate is limited within 5.5%, and the superheat of steam can reach up to 30 K. Besides, the heavy oil recovery efficiency is significantly improved. Moreover, the pollutant emissions of SO , NO and dust are controlled within the ranges of 20–90 mg/(N·m ), 30–90 mg/(N·m ) and 2–10 mg/(N·m ) respectively.

关键词: drum steam injection boiler     natural circulation     recovery wastewater     staged evaporation     circulating fluidized bed (CFB)    

海上油田聚合物驱配套技术研究

刘宗昭,刘福海,易飞,黄波,孙艳萍,王成胜,刘敏

《中国工程科学》 2011年 第13卷 第5期   页码 50-52

摘要:

2002—2010年,经过8年攻关,研究建立了新型耐温、抗盐聚合物室内筛选及评价技术,海上油田聚合物驱开发方案设计和开发指标评价技术,适用于海上平台作业的注聚装备及工艺技术,分段防砂条件下大排量聚合物分段注入技术等10项聚合物驱配套技术,在渤海油田获得推广应用,取得了明显的增油降水效果。渤海油田聚合物驱矿场试验的成功实践证明:聚合物驱配套技术研究与建立是聚合物驱成功实施的基础,为海上油田高效开发做出了重大贡献。

关键词: 海上油田     聚合物驱     配套技术     提高采收率    

Improved resilience measure for component recovery priority in power grids

《工程管理前沿(英文)》 2021年 第8卷 第4期   页码 545-556 doi: 10.1007/s42524-021-0161-5

摘要: Given the complexity of power grids, the failure of any component may cause large-scale economic losses. Consequently, the quick recovery of power grids after disasters has become a new research direction. Considering the severity of power grid disasters, an improved power grid resilience measure and its corresponding importance measures are proposed. The recovery priority of failed components after a disaster is determined according to the influence of the failed components on the power grid resilience. Finally, based on the data from the 2019 Power Yearbook of each city in Shandong Province, China, the power grid resilience after a disaster is analyzed for two situations, namely, partial components failure and failure of all components. Result shows that the recovery priorities of components with different importance measures vary. The resilience evaluations under different repair conditions prove the feasibility of the proposed method.

关键词: resilience measure     power grid     importance measure     component recovery    

Technologies for pollutant removal and resource recovery from blackwater: a review

《环境科学与工程前沿(英文)》 2023年 第17卷 第7期 doi: 10.1007/s11783-023-1683-3

摘要:

● Blackwater is the main source of organics and nutrients in domestic wastewater.

关键词: Blackwater     Water-flushing toilet     Sanitation     Nutrient recovery     Water reuse     Sustainable development    

Dissolved methane in anaerobic effluent: Emission or recovery?

《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-022-1537-4

摘要: Various anaerobic processes have been explored for the energy-efficient treatment of municipal wastewater. However, dissolved methane in anaerobic effluent appears to be a barrier towards the energy and carbon neutrality of wastewater treatment. Although several dissolved methane recovery methods have been developed, their engineering feasibility and economic viability have not yet been assessed in a holistic manner. In this perspective, we thus intend to offer additional insights into the cost-benefit of dissolved methane recovery against its emission.

关键词: Anaerobic treatment     Municipal wastewater     Dissolved methane     Methane recovery     Carbon emission    

温室气体提高采收率的资源化利用及地下埋存

沈平平,江怀友

《中国工程科学》 2009年 第11卷 第5期   页码 54-59

摘要:

全球气候变化是人类迄今面临的既重大又复杂的环境问题,由于温室气体大量排放而引起的全球气候变暖问题日趋严峻,正在严重地威胁着人类赖以生存的环境,国际社会必须采取积极有效措施。2006年中国国家科技部批准国家“九七三”项目——温室气体提高石油采收率的资源化利用及地下埋存研究。建立适合中国国情的CO2高效利用和埋存体系;实现CO2减排的社会效益和CO2高效利用的经济效益;发展适合中国国情的CO2埋存地下理论、多相多组分相态理论、多相多组分非线性渗流理论和CO2捕集与储运理论。通过上述基础研究,形成具有自主知识产权的CO2地质埋存和高效利用的综合技术,使中国CO2安全埋存—高效利用研究处于国际水平。必将为全球资源和环境的高水平、高效益开发和可持续发展提供理论及实践依据。

关键词: 温室气体资源化利用     CO2地下埋存     提高采收率    

China Launched the First Wastewater Resource Recovery Factory in Yixing

《环境科学与工程前沿(英文)》 2022年 第16卷 第1期 doi: 10.1007/s11783-021-1496-1

Highly selective and green recovery of lithium ions from lithium iron phosphate powders with ozone

《化学科学与工程前沿(英文)》 2023年 第17卷 第6期   页码 749-758 doi: 10.1007/s11705-022-2261-0

摘要: Since lithium iron phosphate cathode material does not contain high-value metals other than lithium, it is therefore necessary to strike a balance between recovery efficiency and economic benefits in the recycling of waste lithium iron phosphate cathode materials. Here, we describe a selective recovery process that can achieve economically efficient recovery and an acceptable lithium leaching yield. Adjusting the acid concentration and amount of oxidant enables selective recovery of lithium ions. Iron is retained in the leaching residue as iron phosphate, which is easy to recycle. The effects of factors such as acid concentration, acid dosage, amount of oxidant, and reaction temperature on the leaching of lithium and iron are comprehensively explored, and the mechanism of selective leaching is clarified. This process greatly reduces the cost of processing equipment and chemicals. This increases the potential industrial use of this process and enables the green and efficient recycling of waste lithium iron phosphate cathode materials in the future.

关键词: lithium iron phosphate powder     stoichiometric number     selective leaching     lithium recovery    

“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

Akshay Jain, Zhen He

《环境科学与工程前沿(英文)》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1052-9

摘要:

Resource recovery from wastewater is a key function of bioelectrochemical systems.

NEW resources to recover include Nutrient, Energy, and Water.

Identifying proper application niches can guide BES research and development.

More efforts should be invested to the application of recovered resources.

A mindset for energy performance and system scaling is critically important.

关键词: Bioelectrochemical systems     Resource recovery     Wastewater treatment     Energy     Nutrients    

Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

《环境科学与工程前沿(英文)》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1044-9

摘要:

Metal recovery techniques from electronic waste reported in literature.

Metal recovery processes followed in Industries from electronic waste.

Sustainability analysis of metal recovery processes from electronic waste.

关键词: E-waste     Metal recovery     Metal Recovery from E-waste (MREW)     Sustainability    

标题 作者 时间 类型 操作

pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering emulsions and enhance oilrecovery

期刊论文

干热岩辅助采油可行性研究

王学忠

期刊论文

A review on the application of nanofluids in enhanced oil recovery

期刊论文

从绿色化学的角度提高石油采收率——通过二氧化碳泡沫进行封存

Jennifer A. Clark, Erik E. Santiso

期刊论文

Predicting the yield of pomegranate oil from supercritical extraction using artificial neural networks

J. Sargolzaei, A. Hedayati Moghaddam

期刊论文

Design and application of a novel coal-fired drum boiler using saline water in heavy oil recovery

Junping GU, Yuxin WU, Liping WU, Man ZHANG, Hairui YANG, Junfu LYU

期刊论文

海上油田聚合物驱配套技术研究

刘宗昭,刘福海,易飞,黄波,孙艳萍,王成胜,刘敏

期刊论文

Improved resilience measure for component recovery priority in power grids

期刊论文

Technologies for pollutant removal and resource recovery from blackwater: a review

期刊论文

Dissolved methane in anaerobic effluent: Emission or recovery?

期刊论文

温室气体提高采收率的资源化利用及地下埋存

沈平平,江怀友

期刊论文

China Launched the First Wastewater Resource Recovery Factory in Yixing

期刊论文

Highly selective and green recovery of lithium ions from lithium iron phosphate powders with ozone

期刊论文

“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

Akshay Jain, Zhen He

期刊论文

Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

期刊论文