资源类型

期刊论文 218

年份

2024 1

2023 17

2022 14

2021 25

2020 10

2019 13

2018 16

2017 15

2016 13

2015 11

2014 7

2013 9

2012 7

2011 8

2010 9

2009 4

2008 11

2007 4

2006 1

2005 2

展开 ︾

关键词

煤化工 3

二氧化碳 2

化学反应 2

化学吸收 2

化学循环 2

化工 2

战略 2

CO2 加氢 1

EPC(engineering procurement construction) 1

IPMT 1

SOFC 1

k-最近邻分类 1

丙烯 1

中国石化 1

中草药化学成分 1

中药 1

主成分分析 1

乙烯 1

乙烷干重整 1

展开 ︾

检索范围：

排序： 展示方式：

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

《化学科学与工程前沿（英文）》 2022年 第16卷 第12期   页码 1726-1734 doi: 10.1007/s11705-022-2188-5

摘要： Chemical looping reforming of methane is a novel and effective approach to convert methane to syngas, in which oxygen transfer is achieved by a redox material. Although lots of efforts have been made to develop high-performance redox materials, a few studies have focused on the redox kinetics. In this work, the kinetics of SrFeO3−δ–CaO∙MnO nanocomposite reduction by methane was investigated both on a thermo-gravimetric analyzer and in a packed-bed microreactor. During the methane reduction, combustion occurs before the partial oxidation and there exists a transition between them. The weight loss due to combustion increases, but the transition region becomes less inconspicuous as the reduction temperature increased. The weight loss associated with the partial oxidation is much larger than that with combustion. The rate of weight loss related to the partial oxidation is well fitted by the Avrami–Erofeyev equation with n = 3 (A3 model) with an activation energy of 59.8 kJ∙mol‒1. The rate law for the partial oxidation includes a solid conversion term whose expression is given by the A3 model and a methane pressure-dependent term represented by a power law. The partial oxidation is half order with respect to methane pressure. The proposed rate law could well predict the reduction kinetics; thus, it may be used to design and/or analyze a chemical looping reforming reactor.

关键词： chemical looping reforming     SrFeO3−δ/CaO·MnO nanocomposite     reduction kinetics     Avrami–Erofeyev model     pressure-dependent term    

HTML PDF 收藏

Performance and kinetics of iron-based oxygen carriers reduced by carbon monoxide for chemical looping

Xiuning HUA,Wei WANG,Feng WANG

《环境科学与工程前沿（英文）》 2015年 第9卷 第6期   页码 1130-1138 doi: 10.1007/s11783-015-0821-y

摘要： Chemical looping combustion is a promising technology for energy conversion due to its low-carbon, high-efficiency, and environmental-friendly feature. A vital issue for CLC process is the development of oxygen carrier, since it must have sufficient reactivity. The mechanism and kinetics of CO reduction on iron-based oxygen carriers namely pure Fe O and Fe O supported by alumina (Fe O /Al O ) were investigated using thermo-gravimetric analysis. Fe O /Al O showed better reactivity over bare Fe O toward CO reduction. This was well supported by the observed higher rate constant for Fe O /Al O over pure Fe O with respective activation energy of 41.1±2.0 and 33.3±0.8 kJ·mol . The proposed models were compared via statistical approach comprising Akaike information criterion with correction coupled with F-test. The phase-boundary reaction and diffusion control models approximated to 95% confidence level along with scanning electron microscopy results; revealed the promising reduction reactions of pure Fe O and Fe O /Al O . The boosting recital of iron-based oxygen carrier support toward efficient chemical looping combustion could be explained accurately through the present study.

关键词： chemical looping combustion     iron-based oxygen carriers     reduction kinetics     carbon monoxide     statistics    

HTML PDF 收藏

化学链概念在共沸物分离中的应用 Article

高鑫, 耿雪丽

《工程（英文）》 2021年 第7卷 第1期   页码 84-93 doi: 10.1016/j.eng.2020.06.022

摘要：

为了生产高端化学品和资源回收而进行共沸物分离的必要性，促使人们对化学工业中新分离方法的开发进行了大量研究。本文基于化学链的概念，借助可逆反应辅助精馏技术，提出了一种绿色可持续的共沸物分离方法。化学链分离（CLS）方法的核心概念是选择一种既能与共沸物发生反应，又能通过逆反应进行循环利用的反应物，以闭合回路并实现共沸物分离。本文旨在从分离原理、反应物选择和案例分析（如烯烃、烷烃、芳烃和多元醇产品的分离）等的基础上，为CLS方法的基本理论和应用提供一个有益的见解。本文为产品精制和共沸体系分离过程中的化学分离工艺的过程的强化提供指导和参考，以促进化工行业的可持续发展。

关键词： 化学链     共沸物     反应精馏     反应物选择     过程强化    

HTML PDF 收藏

 对化学链系统中氧载体材料发展的新认识 Review

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

《工程（英文）》 2018年 第4卷 第3期   页码 343-351 doi: 10.1016/j.eng.2018.05.002

摘要：

化学循环燃烧（CLC）和化学循环重整（CLR）是通过循环氧化还原反应将清洁和有效的碳氢化合物转化为动力、燃料和化学品的创新技术。金属氧化物材料在化学循环氧化还原过程中起着重要作用。在还原过程中，氧载体提供所需量的氧离子用于烃转化和产物合成。在氧化步骤中，耗尽的金属氧化物氧载体从空气中补充分子氧，同时释放热量。近年来，用于各种化学循环应用的氧载体材料已经取得了显着进步。在这些金属氧化物材料中，铁基氧载体由于其高载氧能力、成本效益和化学循环反应应用的多功能性而具有吸引力。它们的反应性也可以通过结构设计和改进来增强。本文讨论了氧载体材料开发的最新进展以及这些材料上烃转化的机制。这些进步将促进氧载体材料的开发，以实现更有效的化学循环技术应用。

关键词： 化学循环     氧载体     烃类转化     离子扩散     机制    

HTML PDF 收藏

Numerical investigation of the chemical and electrochemical characteristics of planar solid oxide fuelcell with direct internal reforming

Yuzhang WANG, Shilie WENG, Yiwu WENG

《能源前沿（英文）》 2011年 第5卷 第2期   页码 195-206 doi: 10.1007/s11708-011-0148-8

摘要： A fully three-dimensional mathematical model of a planar solid oxide fuel cell (SOFC) with complete direct internal steam reforming was constructed to investigate the chemical and electrochemical characteristics of the porous-electrode-supported (PES)-SOFC developed by the Central Research Institute of Electric Power Industry of Japan. The effective kinetic models developed over the Ni/YSZ anode takes into account the heat transfer and species diffusion limitations in this porous anode. The models were used to simulate the methane steam reforming processes at the co- and counter-flow patterns. The results show that the flow patterns of gas and air have certain effects on cell performance. The cell at the counter-flow has a higher output voltage and output power density at the same operating conditions. At the counter-flow, however, a high hotspot temperature is observed in the anode with a non-fixed position, even when the air inlet flow rate is increased. This is disadvantageous to the cell. Both cell voltage and power density decrease with increased air flow rate.

关键词： planar solid oxide fuel cell (SOFC)     direct internal reforming     chemical reaction     methane     electrochemical    

HTML PDF 收藏

Mature

Giorgia De Guido, Matteo Compagnoni, Laura A. Pellegrini, Ilenia Rossetti

《化学科学与工程前沿（英文）》 2018年 第12卷 第2期   页码 315-325 doi: 10.1007/s11705-017-1698-z

摘要： Carbon capture and storage (CCS) have acquired an increasing importance in the debate on global warming as a mean to decrease the environmental impact of energy conversion technologies, by capturing the CO produced from the use of fossil fuels in electricity generation and industrial processes. In this respect, post-combustion systems have received great attention as a possible near-term CO capture technology that can be retrofitted to existing power plants. This capture technology is, however, energy-intensive and results in large equipment sizes because of the large volumes of the flue gas to be treated. To cope with the demerits of other CCS technologies, the chemical looping combustion (CLC) process has been recently considered as a solution for CO separation. It is typically referred to as a technology without energy penalty. Indeed, in CLC the fuel and the combustion air are never mixed and the gases from the oxidation of the fuel (i.e., CO and H O) leave the system as a separate stream and can be separated by condensation of H O without any loss of energy. The key issue for the CLC process is to find a suitable oxygen carrier, which provides the fuel with the activated oxygen needed for combustion. The aim of this work is to explore the feasibility of using perovskites as oxygen carriers in CLC and to consider the possible advantages with respect to the scrubbing process with amines, a mature post-combustion technology for CO separation.

关键词： CO2 capture     monoethanolamine     chemical looping combustion     oxygen carrier     perovskites    

HTML PDF 收藏

面向低碳未来的化学链清洁能源技术

程卓, Anuj Joshi, 范良士

《工程（英文）》 2023年 第29卷 第10期   页码 42-44 doi: 10.1016/j.eng.2023.08.008

HTML PDF 收藏

Simultaneous CO

Jie ZHU,Wei WANG,Xiuning HUA,Zhou XIA,Zhou DENG

《环境科学与工程前沿（英文）》 2015年 第9卷 第6期   页码 1117-1129 doi: 10.1007/s11783-015-0812-z

摘要： The chemical looping concept provided a novel way to achieve carbon separation during the production of energy or substances. In this work, hydrogen generation with inherent CO capture in single packed bed reactor via this concept was discussed. Two oxygen carriers, Fe O 60 wt.% and Fe O 55 wt.%/CuO 5 wt.% supported by Al O , were made by ball milling method. First, according to the characteristics of the reduction breakthrough curve, a strict fuel supply strategy was selected to achieve simultaneous CO capture and H production. Then, in the long term tests using CO as fuel, it was proved that CuO addition improved hydrogen generation with the maximum intensity of 3700 μmol H ·g Fe O compared with Fe-Al of 2300 μmol H ·g Fe O . The overall CO capture efficiency remained 98%–98.8% over 100 cycles. Moreover, the reactivity of deactivated materials was recovered nearly like that of fresh ones by sintering treatment. Finally, two kinds of complex gases consist of CO, H , CH and CO were utilized as fuels to test the feasibility. The results showed all components could be completely converted by Fe-Cu-Al in the reduction stage. The intensity of hydrogen production and the overall CO capture efficiency were in the range of 2000–2400 μmol H ·g Fe O and 89%–95%, respectively.

关键词： CO2 capture     chemical looping hydrogen generation     iron based oxygen carriers     single packed bed reactor     long-term test     complex gases fuel    

HTML PDF 收藏

decarbonisation of energy-intensive industries: a comparative review of techno-economic feasibility of solid looping

《化学科学与工程前沿（英文）》 2022年 第16卷 第9期   页码 1291-1317 doi: 10.1007/s11705-022-2151-5

摘要： Carbon capture and storage will play a crucial role in industrial decarbonisation. However, the current literature presents a large variability in the techno-economic feasibility of CO2 capture technologies. Consequently, reliable pathways for carbon capture deployment in energy-intensive industries are still missing. This work provides a comprehensive review of the state-of-the-art CO2 capture technologies for decarbonisation of the iron and steel, cement, petroleum refining, and pulp and paper industries. Amine scrubbing was shown to be the least feasible option, resulting in the average avoided CO2 cost of between 62.7 €·tCO2−1 for the pulp and paper and 104.6 €·tCO2−1 for the iron and steel industry. Its average equivalent energy requirement varied between 2.7 (iron and steel) and 5.1 MJth⋅kgCO2−1 (cement). Retrofits of emerging calcium looping were shown to improve the overall viability of CO2 capture for industrial decarbonisation. Calcium looping was shown to result in the average avoided CO2 cost of between 32.7 (iron and steel) and 42.9 €·tCO2−1 (cement). Its average equivalent energy requirement varied between 2.0 (iron and steel) and 3.7 MJth⋅kgCO2−1 (pulp and paper). Such performance demonstrated the superiority of calcium looping for industrial decarbonisation. Further work should focus on standardising the techno-economic assessment of technologies for industrial decarbonisation.

关键词： industrial CO2 emissions     CCS deployment     carbonate looping     net-zero industry     carbon capture benchmarks    

HTML PDF 收藏

氧化还原氧化裂解石脑油制乙烯的过程模拟与分析 Article

Vasudev Pralhad Haribal,Yun Chen,Luke Neal,Fanxing Li

《工程（英文）》 2018年 第4卷 第5期   页码 714-721 doi: 10.1016/j.eng.2018.08.001

摘要：

石脑油热裂解制乙烯（C2H4）是一种能源密集型工艺（每吨C2H4 高达40 GJ 热量），会形成大量焦炭和氮氧化物（NOx），而且每产生1 kg C2H4 就有1.8~2 kg 的二氧化碳（CO2）排放量。我们提出了石脑油氧化还原氧化裂解（redox oxy-cracking，ROC）的替代方法。在该两步法中，石脑油裂解产生的氢气（H2）首先在氧化还原催化剂的作用下与其晶格氧选择性地燃烧。随后氧化还原催化剂被空气再次氧化并释放热量，以满足裂解反应对热量的需求。这个强化过程减少了附加能量的消耗以及CO2 和NOx 的排放。此外，由于H2 的选择性燃烧，C2H4 和丙烯（C3H6）的形成可以被增强。在本研究中，我们基于最近开发氧化还原催化剂的实验数据，使用ASPEN Plus® 模拟ROC工艺。与传统的石脑油裂解相比，ROC 工艺可将能耗和CO2 排放量降低52%。该工艺的上游部分少消耗约67% 的能量，同时每千克石脑油原料多产生28% 的C2H4 和C3H6。

关键词： 乙烯     石脑油裂解     过程强化     化学循环     过程模拟    

HTML PDF 收藏

Thermodynamic analysis of steam reforming of glycerol for hydrogen production at atmospheric pressure

Ammaru Ismaila, Xueli Chen, Xin Gao, Xiaolei Fan

《化学科学与工程前沿（英文）》 2021年 第15卷 第1期   页码 60-71 doi: 10.1007/s11705-020-1975-0

摘要： Thermodynamic chemical equilibrium analysis of steam reforming of glycerol (SRG) for selective hydrogen production was performed based on the Gibbs free energy minimisation method. The ideal SRG reaction (C H O +3H O→3CO +7H ) and a comprehensive set of side reactions during SRG are considered for the formation of a wide range of products. Specifically, this work focused on the analysis of formation of H CO , CO and CH in the gas phase and determination of the carbon free region in SRG under the conditions at atmospheric pressure, 600€K–1100€K and 1.013 × 10 –1.013 × 10 Pa with the steam-to-glycerol feed ratios (SGFR) of 1:5–10. The reaction conditions which favoured SRG for H production with minimum coke formation were identifies as: atmospheric pressure, temperatures of 900€K–1050€K and SGFR of 10:1. The influence of using the inert carrier gas (i.e., N ) in SRG was studied as well at atmospheric pressure. Although the presence of N in the stream decreased the partial pressure of reactants, it was beneficial to improve the equilibrium yield of H . Under both conditions of SRG (with/without inert gas), the CH production is minimised, and carbon formation was thermodynamically unfavoured at steam rich conditions of SGFR>5:1.

关键词： steam reforming of glycerol     H2     N2     carbon deposition     thermodynamic analysis     Gibbs free energy minimisation    

HTML PDF 收藏

Influence of HS and NH on biogas dry reforming using Ni catalyst: a study on single and synergetic effect

《环境科学与工程前沿（英文）》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1632-1

摘要：

● NH3 in biogas had a slight inhibitory effect on dry reforming.

关键词： Biogas     Dry reforming     Sulfur poisoning     Ammonia     Synergetic effect     Hydrogen    

HTML PDF 收藏

Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

Omeralfaroug KHALIFA, Mingxin XU, Rongjun ZHANG, Tahir IQBAL, Mingfeng LI, Qiang LU

《能源前沿（英文）》 2022年 第16卷 第3期   页码 492-501 doi: 10.1007/s11708-021-0721-8

摘要： Catalytic steam reforming is a promising route for tar conversion to high energy syngas in the process of biomass gasification. However, the catalyst deactivation caused by the deposition of residual carbon is still a major challenge. In this paper, a modified Ni-based Ni-Co/Al O -CaO (Ni-Co/AC) catalyst and a conventional Ni/Al O (Ni/A) catalyst were prepared and tested for tar catalytic removal in which toluene was selected as the model component. Experiments were conducted to reveal the influences of the reaction temperature and the ratio between steam to carbon on the toluene conversion and the hydrogen yield. The physicochemical properties of the modified Ni-based catalyst were determined by a series of characterization methods. The results indicated that the Ni-Co alloy was determined over the Ni-Co/AC catalyst. The doping of CaO and the presence of Ni-Co alloy promoted the performance of toluene catalytic dissociation over Ni-Co/AC catalyst compared with that over Ni/A catalyst. After testing in steam for 40 h, the carbon conversion over Ni-Co/AC maintained above 86% and its resistance to carbon deposition was superior to Ni/A catalyst.

关键词： catalytic steam reforming     tar model compound     Ni-based catalyst     carbon resistance    

HTML PDF 收藏

Current status of municipal wastewater treatment plants in North-east China: implications for reforming

《环境科学与工程前沿（英文）》 2023年 第17卷 第6期 doi: 10.1007/s11783-023-1673-5

摘要：

● The performance and costs of 20 municipal WWTPs were analyzed.

关键词： Low temperature     Municipal WWTPs     Cold region     Electricity consumption     Nitrogen removal    

HTML PDF 收藏

Catalytic steam reforming of tar for enhancing hydrogen production from biomass gasification: a review

Ru Shien TAN, Tuan Amran TUAN ABDULLAH, Anwar JOHARI, Khairuddin MD ISA

《能源前沿（英文）》 2020年 第14卷 第3期   页码 545-569 doi: 10.1007/s11708-020-0800-2

摘要： Presently, the global search for alternative renewable energy sources is rising due to the depletion of fossil fuel and rising greenhouse gas (GHG) emissions. Among alternatives, hydrogen (H ) produced from biomass gasification is considered a green energy sector, due to its environmentally friendly, sustainable, and renewable characteristics. However, tar formation along with syngas is a severe impediment to biomass conversion efficiency, which results in process-related problems. Typically, tar consists of various hydrocarbons (HCs), which are also sources for syngas. Hence, catalytic steam reforming is an effective technique to address tar formation and improve H production from biomass gasification. Of the various classes in existence, supported metal catalysts are considered the most promising. This paper focuses on the current researching status, prospects, and challenges of steam reforming of gasified biomass tar. Besides, it includes recent developments in tar compositional analysis, supported metal catalysts, along with the reactions and process conditions for catalytic steam reforming. Moreover, it discusses alternatives such as dry and autothermal reforming of tar.

关键词： hydrogen     biomass gasification     tar     steam reforming     catalyst    

HTML PDF 收藏

标题 作者 时间 类型 操作

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

期刊论文

Performance and kinetics of iron-based oxygen carriers reduced by carbon monoxide for chemical looping

Xiuning HUA,Wei WANG,Feng WANG

期刊论文

化学链概念在共沸物分离中的应用

高鑫, 耿雪丽

期刊论文

 对化学链系统中氧载体材料发展的新认识

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

期刊论文

Numerical investigation of the chemical and electrochemical characteristics of planar solid oxide fuelcell with direct internal reforming

Yuzhang WANG, Shilie WENG, Yiwu WENG

期刊论文

Mature

Giorgia De Guido, Matteo Compagnoni, Laura A. Pellegrini, Ilenia Rossetti

期刊论文

面向低碳未来的化学链清洁能源技术

程卓, Anuj Joshi, 范良士

期刊论文

Simultaneous CO

Jie ZHU,Wei WANG,Xiuning HUA,Zhou XIA,Zhou DENG

期刊论文

decarbonisation of energy-intensive industries: a comparative review of techno-economic feasibility of solid looping

期刊论文

氧化还原氧化裂解石脑油制乙烯的过程模拟与分析

Vasudev Pralhad Haribal,Yun Chen,Luke Neal,Fanxing Li

期刊论文

Thermodynamic analysis of steam reforming of glycerol for hydrogen production at atmospheric pressure

Ammaru Ismaila, Xueli Chen, Xin Gao, Xiaolei Fan

期刊论文

Influence of HS and NH on biogas dry reforming using Ni catalyst: a study on single and synergetic effect

期刊论文

Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

Omeralfaroug KHALIFA, Mingxin XU, Rongjun ZHANG, Tahir IQBAL, Mingfeng LI, Qiang LU

期刊论文

Current status of municipal wastewater treatment plants in North-east China: implications for reforming

期刊论文

Catalytic steam reforming of tar for enhancing hydrogen production from biomass gasification: a review

Ru Shien TAN, Tuan Amran TUAN ABDULLAH, Anwar JOHARI, Khairuddin MD ISA

期刊论文