检索结果-内蒙古大学图书馆

Product-based Carbon Constraint Energy Planning with pinch analysis for sustainable methanol industry in China

Chemical engineering Transactions 2017年 61卷 103-108页

作者： Qin, Zhen Tang, Kai Wu, Xiaomei Yu, Yunsong Zhang, Zaoxiao School of Chemical Engineering and Technology Xi'an Jiaotong University Xi'an710049 China State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China

For the purpose of greenhouse gas control in chemical industries, the industrial structure adjustment and lowcarbon technology retrofit are the alternatives for policymakers and plants to simultaneously meet the energy demand and carbon emission limit. Considering the various technological sources and predictable product demand in methanol production industries, this paper presents the method of Product-based Carbon Constraint Energy Planning (PCEP) combined with improved GM(1.1. model to analyse the practical interaction between energy demand and carbon emission for methanol industry in 2020 in China. The results show that without any emission reduction measures, the total carbon emissions of methanol industry in 2020 would be 4.84 times larger than that of 201.. By enhancing the methanol production of biomass routing and conducting the project of CO2 capture and storage (CCS) in all coal-to-methanol plants, the total carbon emissions would be 36.01.% less than the given carbon constraint. Besides, at least 65 % of coal-to-methanol plants should be retrofitted with CCS on the consideration of the current challenges of biofuel development in order to meet the carbon constraint. The energy structure of China and the inherent property with high carbon content in coal determine that the coal-to-methanol routing contributes the most of methanol supply but also the maximum carbon emissions in the methanol industry, even if policymakers and plants take measures to adjust the industrial structure and retrofit the existing plants with low-carbon technology. Copyright © 201., AIDIC Servizi S.r.l.

关键词： Chemical industry

来源：评论

学校读者我要写书评

暂无评论

Integration of Organic Rankine Cycle with Lignite Flue Gas Pre-drying for Waste Heat and Water Recovery from Dryer Exhaust Gas: Thermodynamic and Economic Analysis

引用

Energy Procedia 2017年 105卷 1614-1621页

作者： Xiaoqu Han Sotirios Karellas Ming Liu Konstantinos Braimakis Weixiong Chen Junjie Yan Emmanuel Kakaras State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an 710049 China Laboratory of Steam Boilers and Thermal Plants National Technical University of Athens Athens 15780 Greece

The flue gas pre-drying of lignite produces a moisture rich dryer exhaust gas which can be further cooled to recover the waste heat and water vapor. An environmental friendly power system is investigated in the present work, which integrates the lignite flue gas pre-drying system with an organic Rankine cycle (ORC) to utilize the waste heat to generate power and capture the condensed water. Simulation models of the integrated system are developed, incorporating thermodynamic and economic evaluation indicators. The optimal energy and exergy efficiencies of the ORC system are calculated to be 3.1.% and 24.57%, respectively, for an evaporation temperature of 51. °C when R245fa is used as the working fluid. Accordingly, the ORC power output is 3.61.MW and the absolute plant efficiency improvement is 0.27% points. Moreover, 55.1.% of the water vapor can be recovered. The economic performance significantly relies on the specific investment cost of ORC and the electricity selling price. Typically, the break-even points of the specific investment cost are 2300 €/kW and 3700 €/kW when electricity selling prices are 0.05 €/kWh and 0.08 €/kWh, respectively.

关键词： Lignite Flue gas pre-drying Waste heat recovery Organic Rankine cycle

来源：评论

学校读者我要写书评

暂无评论

Layered sphere-shaped TiO_2 capped with gold nanoparticles on structural defects and their catalysis of formaldehyde oxidation

引用

Journal of Environmental Sciences 2016年第1期28卷 77-85页

作者： Chunyan Ma Guanglong Pang Guangzhi He Yang Li Chi He Zhengping Hao Department of Environmental Nano-materials Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Department of Environmental Science and Engineering State Key Laboratory of Multiphase Flow in Power EngineeringSchool of Energy and Power Engineering Xi'an Jiaotong University

We describe here a one-step method for the synthesis of Au/TiO2 nanosphere materials,which were formed by layered deposition of multiple anatase TiO2 *** Au nanoparticles were stabilized by structural defects in each TiO2 nanosheet,including crystal steps and edges,thereby fixing the Au-TiO2 perimeter *** transfer occurred along the gaps between these TiO2 nanosheet layers and in contact with catalytically active sites at the Au-TiO2 *** doped Au induced the formation of oxygen vacancies in the Au-TiO2 *** vacancies are essential for generating active oxygen species（-＊O^-） on the TiO2 surface and Ti^3＋ ions in bulk *** ions can then form Ti^3＋-O^--Ti^4＋species,which are known to enhance the catalytic activity of formaldehyde（HCHO） *** studies on structural and oxygen vacancy defects in Au/TiO2 samples provide a theoretical foundation for the catalytic mechanism of HCHO oxidation on oxide-supported Au materials.

关键词： Layered Au/TiO2 nanospheres Structural defects Oxygen vacancy defects Reaction mechanism Formaldehyde oxidation

来源：评论

学校读者我要写书评

暂无评论

[email protected] 2 O 4 fiber-in-tube mesoporous nanostructure: Formation mechanism and high electrochemical performance as an anode for lithium-ion batteries

引用

Journal of Alloys and Compounds 2017年 693卷 110-117页

作者： Jianan Wang Guorui Yang Ling Wang Wei Yan Wei Wei Department of Environmental Science and Engineering State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China Department of Applied Chemistry School of Science Xi'an Jiaotong University 710049 China

In this paper, [email&#1.0;protected] 2 O 4 with a fiber-in-tube mesoporous nanostructure has been fabricated via a one-step single-spinneret electrospinning technique. This unique nanostructure is made of an outer sp... 详细信息

In this paper, [email protected] 2 O 4 with a fiber-in-tube mesoporous nanostructure has been fabricated via a one-step single-spinneret electrospinning technique. This unique nanostructure is made of an outer spinel CoFe 2 O 4 tube and a loose inner fiber composed of the residual carbonaceous materials and metal precursors. The nanostructure's properties, such as morphology, components, structures and thermal stability, are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-Ray diffraction (XRD), thermogravimetric analysis (TGA), Brunauer, Emmett and Teller type specific area (S BET ) determination, X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma-atomic emission spectrometry (ICP-AES). As an anode material for lithium-ion batteries, the [email protected] 2 O 4 composite (6.25 wt% carbon content) exhibits a high reversible capacity of 740 mA h g −1.after over 200 cycles at the current density of 200 mA g −1.with excellent cycling stability, which is attributed to its one dimensional continuous fiber-in-tube mesoporous morphology, as well as its stable structure benefiting from the existence of carbonaceous yolk. In addition, pure CoFe 2 O 4 nanotubes can also be obtained by sequentially agitating this product in water, which provides more potential applications of CoFe 2 O 4 .

关键词： Electrospinning [email protected] 2 O 4 Fiber-in-tube Mesoporous nanostructure Li-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Adsorption Characteristics of Sulfuric Acid Mist on Fly Ash in Low-low temperature Flue Gas System

引用

Energy Procedia 2017年 142卷 3307-3312页

作者： Yubo Zhang Yu Yan Jianhua Liu Qingwen Qi Lei Deng Defu Che Xi’an Thermal Power Research Institute Co. Ltd. Xi’an 710032 China State Key Laboratory of Multiphase Flow in Power Engineering School of Energy and Power Engineering Xi’an Jiaotong University Xi’an 710049 China Ningxia Electric Power Research Institute Ningxia 750002 China

Low-low temperature flue gas system which also called MHI high efficiency system developed by Mitsubishi Corporation has gained comprehensive attention in Japan, European countries and American. However, the applications of this system in China are facing several sever problems about corrosion and ash fouling. This paper focuses on the adsorption characteristics of sulfuric acid mist on fly ash during the flue gas cooling process in the exchanger before the electrostatic precipitator. The experimental results indicate that there is an optimum adsorption temperature for the adsorption of sulfuric acid mist, and this temperature is about 30 ℃ lower than the acid dew point. The process of adsorption is mainly dominated by chemical reactions rather than physical reactions, and the alkali metals (Na, K) and alkaline earth metals (Mg, Ca) are the main factors which influence the chemical reaction rate, especially the Na element. Besides, with the D/S increasing, the adsorption efficiency increases and it is independent of the adsorption temperature. Ash particle size also has large influence on the adsorption efficiency, the smaller the particle size is, the larger the adsorption efficiency is. And when the flue gas speed rose, gas residence time correspondingly reduced and the adsorption efficiency dropped. However, since gas residence time is short in engineering applications, the influence of gas residence time is quite moderate. Furthermore, the adsorption of the sulfuric acid mist will cause a significant agglomeration between ash particles, and it has great significance to the removal of PM.

关键词： Low-low temperature flue gas system sulfuric acid mist adsorption characteristics

来源：评论

学校读者我要写书评

暂无评论

Experimental study on thermal performance of a water/steam cavity receiver with solar simulator

引用

Energy Procedia 2017年 142卷 265-270页

作者： Zhenjie Wan Mumtaz A. Qaisrani Xuancheng Du Jinjia Wei Jiabin Fang Jian Zhang State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an 710049 People’s Republic of China School of Chemical Engineering and Technology Xi’an Jiaotong University Xi’an 710049 People’s Republic of China

The performance of cavity receiver plays a fatal role in light-heat conversion process in a concentrating solar power (CSP) plant. In our present work, an experimental platform is designed and built, in which a solar simulator consisting of seven mutually independent xenon lamp units is used for supplying the solar energy needed. The cold start-up and steady {1. performance of the cavity receiver were studied under 0.5MPa. The results show that for a certain cavity structure, temperatures on boiling panels and thus the heat loss can be affected not merely by the heat flux, other parameters can influence the temperature of absorbing surfaces, such as the heat transfer in the boiling tubes, fluid flow {1.s and the wind effect, so the temperature distribution is highly non-uniform on boiling panels. However, the temperatures of passive surfaces depend greatly on the input solar energy, thus the heat losses of the passive surfaces will vary with the input energy. Overheat occurs if a high heat flux doesn’t have a sufficient heat transfer inside boiling tubes internal. The stagnation zone does exist in the cavity and its boundary varies with a different input energy, thus the convective heat loss can be affected. The cavity receiver thermal efficiency is 72.92% under 0.5MPa, may be the reason behind this low efficiency is the strong cooling wind of the solar simulator.

关键词： Solar energy central cavity receiver start-up thermal performance solar simulator thermal efficiency

来源：评论

学校读者我要写书评

暂无评论

Assessing the predictions of A NOx kinetic mechanism on recent hydrogen and syngas experimental data 9

Assessing the predictions of A NOx kinetic mechanism on rece...

引用

9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 201.

作者： Zhang, Yingjia Mathieu, Olivier Petersen, Eric Bourque, Gilles Li, Qianqian Curran, Henry Huang, Zuohua State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China Combustion Chemistry Centre National University of Ireland Galway Ireland Department of Mechanical Engineering Texas A and M University College StationTX United States Siemens Canada Limited 9545 Cote de Liesse Road MontrealQCH9P 1A5 Canada

A detailed chemical kinetic mechanism has been developed to describe the pyrolysis and oxidation of the hydrogen/NOx and syngas/NOx systems. The thermodynamic data of nitrogenous compounds have been updated based on t... 详细信息

关键词： Hydrogen

来源：评论

学校读者我要写书评

暂无评论

Correction to: Glucose in Conjunction with Multiple Laser Pulses on Laser Treatment of Port-wine Stain: An in vivo Study

引用

Lasers in medical science 2018年第9期33卷 2015页

作者： Jun Ma Bin Chen Dong Li Yue Zhang Zhaoxia Ying State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 Shaanxi China. State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 Shaanxi China. chenbin@***. Department of Dermatology Second Affiliated Hospital Xi'an Jiaotong University Xi'an 710049 Shaanxi China. yzx1919@***.

In the originally published article, the title was incorrectly copied from another article. The correct title is "Glucose in Conjunction with Multiple Laser Pulses on Laser Treatment of Port-wine Stain: An in viv...

关键词：

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Experimental study of liquid sodium flow and heat transfer characteristics along a hexagonal 7-rod bundle” [Appl. Therm. Eng. 1.9 (201.) 578–587.]

引用

Applied Thermal engineering 2019年 159卷

作者： Yandong Hou Liu Wang Mingjun Wang Kui Zhang Xisi Zhang Wenjun Hu Yingwei Wu Wenxi Tian Suizheng Qiu G.H. Su State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University 28 Xianning West Road Xi’an 710049 China Shaanxi Key Lab. of Advanced Nuclear Energy and Technology School of Nuclear Science and Technology Xi’an Jiaotong University 28 Xianning West Road Xi’an 710049 China China Institute of Atomic Energy P.O. Box 275-95 Beijing 102413 China

来源：评论

学校读者我要写书评

暂无评论

Impressive computational acceleration by using machine learning for 2-dimensional super-lubricant materials discovery

arXiv

引用

arXiv 2019年

作者： Fronzi, Marco Ghazaleh, Mutaz Abu Isayev, Olexandr Winkler, David A. Shapter, Joe Ford, Michael J. International Research Centre for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi710049 China School of Mathematical and Physical Science University of Technology Sydney UltimoNSW2007 Australia Laboratory for Molecular Modeling Division of Chemical Biology and Medicinal Chemistry UNC Eshelman School of Pharmacy University of North Carolina Chapel HillNC27599 United States Manufacturing Commonwealth Scientific and Industrial Research Organization Bag 10 Clayton South MDCVIC3169 Australia Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade ParkvilleVIC3052 Australia Latrobe Institute for Molecular Science La Trobe University Kingsbury Drive BundooraVIC3086 Australia School of Pharmacy University of Nottingham NottinghamNG7 2RD United Kingdom Australian Institute for Bioengineering and Nanotechnology University of Queensland St Lucia BrisbaneQLD4072 Australia College of Science and Engineering Flinders University Bedford Park AdelaideSA5042 Australia

The screening of novel materials is an important topic in the field of materials science. Although traditional computational modelling, especially first-principles approaches, is a very useful and accurate tool to predict the properties of novel materials, it still demands extensive and expensive state-of-the-art computational resources. Additionally, they can be often extremely time consuming. We describe a time and resource efficient machine learning approach to create a large dataset of structural properties of van der Waals layered structures. In particular, we focus on the interlayer energy and the elastic constant of layered materials composed of two different 2-dimensional (2D) structures, that are important for novel solid lubricant and super-lubricant materials. We show that machine learning models can recapitulate results of computationally expansive approaches (i.e. density functional theory) with high accuracy. Copyright © 201., The Authors. All rights reserved.

关键词： Large dataset

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：