Fuel Processing Technology最新文献_第4页

Multi-strategy modeling integrating kinetics mechanism of cracking and pyrolysis and unsupervised dual-stage attention long and short-term memory network 基于裂化热解动力学机制和无监督双阶段注意长短期记忆网络的多策略建模

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-21 DOI: 10.1016/j.fuproc.2025.108349

Bin Wang , Kai Luo , Xiangming Chen , Kai Deng , Jian Long , Wenze Guo

The fluid catalytic cracking process utilizing the dual-riser reactors (MIP-LTAG) holds significant importance in the development of petrochemical enterprises. It aims to reduce fuel consumption while increasing output. Consequently, modeling for the production process is an essential task. However, traditional methods struggle to accurately describe the complex reaction mechanisms involved in the cracking/pyrolysis dual reaction pathways. Additionally, due to the coupling of variables and insufficiency of dynamic characteristics, capturing multi-variable spatio-temporal dependencies remains challenging. This paper focuses on key indicators such as product yield and carbon emissions within the core reaction-regeneration unit of the target technological process. A lumped kinetic mechanism model is constructed to balance the reaction pathway. Variational mode decomposition (VMD) is employed to perform decomposition of the coupled variables. The unsupervised dual-stage attentional long short term memory model (UDA-LSTM) is utilized to capture multi-scale characteristics. To leverage these advantages, this paper designs three hybrid model for collaborative optimization of multi-objective predictions. Finally, the effectiveness of the proposed hybrid modeling framework is validated through an actual industrial production case. The predicted mean squared error (MSE) of the main product yield does not exceed 0.2, and the constructed process model supports real-time monitoring of the production process by refineries.

双提升管反应器催化裂化工艺对石化企业的发展具有重要意义。它的目的是在增加产量的同时减少燃料消耗。因此，为生产过程建模是一项必不可少的任务。然而，传统方法难以准确描述裂化/热解双反应路径中复杂的反应机理。此外，由于变量的耦合和动态特征的不足，捕获多变量时空依赖关系仍然具有挑战性。本文重点研究了目标工艺流程核心反应-再生单元内的产品产率和碳排放等关键指标。为了平衡反应途径，建立了集总动力学机理模型。采用变分模态分解（VMD）对耦合变量进行分解。采用无监督双阶段注意长短期记忆模型（UDA-LSTM）捕捉多尺度特征。为了充分利用这些优势，本文设计了三种多目标预测协同优化的混合模型。最后，通过一个实际的工业生产案例验证了所提出的混合建模框架的有效性。主要产品产率的预测均方误差（MSE）不超过0.2，所构建的工艺模型支持炼油厂对生产过程的实时监控。

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引用次数: 0

Catalytic methanol reforming process intensification for integration with proton-exchange membrane fuel cells (PEMFC) - Review 与质子交换膜燃料电池（PEMFC）集成的催化甲醇重整过程强化——综述

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-17 DOI: 10.1016/j.fuproc.2025.108350

Emilija Todorovski , Filip Todorovski , Andrej Lotrič , Mitja Mori , Blaž Likozar , Søren Juhl Andreasen , Mihael Sekavčnik

The Net Zero Scenario, driven by the imperative of carbon neutrality, demands a major reduction in reliance on fossil fuel-based hydrogen production. Another challenge is hydrogen's storage and transport due to its low volumetric energy density. These issues have elevated hydrogen carriers—particularly methanol—to a prominent position. Methanol's favorable H/C ratio, liquid state under ambient conditions, and renewable production potential establish it as a compelling hydrogen carrier. Already essential in vehicle fuels and chemical production, methanol's role is poised to expand further. Among conversion routes, methanol steam reforming (MSR) stands out for its high hydrogen yield and low CO production. This review outlines strategies for lowering the MSR reaction temperature, enabling integration with proton exchange membrane fuel cells (PEMFC), and leveraging the thermal synergy between the two systems. The review highlights the critical roles of catalysts and reactor design in optimizing MSR–PEMFC integration. A detailed evaluation of Cu-based and group 8–10 metal catalysts provides insight into their suitability for PEMFC applications. Reactor configurations, including conventional, membrane, and micro-channeled designs, are assessed for their integration potential. Finally, the review synthesizes these findings into design-oriented insights for optimizing MSR–PEMFC systems, emphasizing catalyst selection, reactor configuration, and system-level integration, offering practical pathways for implementation.

在碳中和势在必行的推动下，净零情景要求大幅减少对化石燃料制氢的依赖。另一个挑战是氢的储存和运输，因为它的低体积能量密度。这些问题将氢载体——尤其是甲醇——提升到了一个突出的位置。甲醇良好的H/C比、环境条件下的液态和可再生生产潜力使其成为令人信服的氢载体。甲醇在汽车燃料和化工生产中已经是必不可少的，它的作用还将进一步扩大。在各种转化途径中，甲醇蒸汽重整（MSR）以其产氢率高、CO产量低而著称。本文概述了降低MSR反应温度、与质子交换膜燃料电池（PEMFC）集成以及利用两个系统之间的热协同作用的策略。综述强调了催化剂和反应器设计在优化MSR-PEMFC集成中的关键作用。对cu基和基团8-10金属催化剂的详细评估有助于深入了解它们在PEMFC应用中的适用性。反应器配置，包括常规、膜和微通道设计，评估其集成潜力。最后，该综述将这些发现综合为优化MSR-PEMFC系统的设计导向见解，强调催化剂选择，反应器配置和系统级集成，为实施提供实用途径。

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引用次数: 0

Valorization of food waste into renewable fuels via anaerobic digestion and inline CO2 reforming over Ni-based catalysts 通过厌氧消化和镍基催化剂上的在线二氧化碳重整，将食物垃圾转化为可再生燃料

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-10 DOI: 10.1016/j.fuproc.2025.108348

Amer Inayat , Petra Wojnarova , Piotr Jachimowicz , Jacopo De Maron , Elisabetta Orfei , Nicola Schiaroli , Carlo Lucarelli , Kamil Gorecki , Francesco Basile , Pavel Lestinsky , Jiri Rusin

Anaerobic digestion (AD) is a promising technology for converting food waste (FW) or other biodegradable organic waste (BOW) into renewable biogas, while dry reforming of methane (DRM) is an environmentally friendly route for converting greenhouse gases into syngas. Moreover, the use of renewable biogas in dry reforming aligns with the global sustainability goals for reducing reliance on fossil fuels in producing important chemicals. In this regard, the present study deals with the valorization of food waste into renewable hydrogen/syngas by integrating AD and DRM. AD of FW was carried out in a lab-scale anaerobic reactor and the resulting biogas was passed over a sorption bed for H₂S removal. It was shown that iron hydroxide-based materials can effectively remove H₂S, thereby providing a clean biogas feed suitable for catalytic dry reforming. Furthermore, it was demonstrated that the Ni catalyst, doped with a small amount of noble metal and supported on MgAl mixed oxides, exhibits superior catalytic performance in reforming of real or model biogas mixtures. The catalyst showed outstanding stability despite online changes in the reaction parameters. This study may provide new insights toward the development of sustainable processes that simultaneously reduce BOW and CO₂, while also generating valuable products.

厌氧消化（AD）是将食物垃圾（FW）或其他可生物降解的有机废物（BOW）转化为可再生沼气的一种很有前途的技术，而甲烷干重整（DRM）是将温室气体转化为合成气的一种环保途径。此外，在干式重整中使用可再生沼气符合全球可持续发展目标，即在生产重要化学品时减少对化石燃料的依赖。在这方面，本研究通过整合AD和DRM来处理食物垃圾转化为可再生氢/合成气的问题。在实验室规模的厌氧反应器中对FW进行AD处理，所得沼气通过吸附床去除H2S。结果表明，氢氧化铁基材料可以有效地去除H2S，从而提供适合于催化干式重整的清洁沼气原料。此外，还证明了在MgAl混合氧化物上掺杂少量贵金属的Ni催化剂在实际或模型沼气混合物的重整中表现出优异的催化性能。尽管反应参数在线变化，催化剂仍表现出优异的稳定性。这项研究可能为开发可持续的工艺提供新的见解，同时减少BOW和CO2，同时也产生有价值的产品。

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引用次数: 0

Stepwise Fe introduction tailors Rh-CeO2 active sites for selective CO2 hydrogenation to ethanol Fe的逐步引入调整了Rh-CeO2的活性位点，以选择性地将CO2加氢成乙醇

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-06 DOI: 10.1016/j.fuproc.2025.108347

Jun Yu , Rui Xu , Yong Guo , Dongsen Mao , Tao Meng , Xiang Zheng , Haifang Mao

CO₂ hydrogenation to produce high-value fuels like ethanol represents a cutting-edge research frontier, yet overcoming the low ethanol productivity remains a challenge. Herein, a series of Fe-promoted Rh/CeO₂ catalysts were prepared by varying the impregnation sequences, and investigated their catalytic performance of ethanol synthesis via CO₂ hydrogenation. The Fe/Rh/CeO₂ catalyst, fabricated through sequential Rh impregnation followed by Fe deposition, demonstrated remarkable performance, achieving 19.8 % ethanol selectivity at 10.8 % CO₂ conversion, with a notable one-pass ethanol productivity of 25.3 mmol·g_Rh⁻¹·h⁻¹. Characterization results revealed that sequential Rh impregnation prior to Fe can promote the Rh dispersion and metal-support interaction, enhancing CO₂ adsorption and dissociation capability. This interface also facilitates the transformation of absorbed b-CO₃²⁻ into CO(l), provides high concentrations of CO(l) and HCOO* intermediates simultaneously, and finally boosting the ethanol formation by the C − C coupling reaction.

二氧化碳加氢生产像乙醇这样的高价值燃料代表了一个前沿的研究前沿，但克服低乙醇生产率仍然是一个挑战。本文通过不同浸渍顺序制备了一系列fe促进的Rh/CeO2催化剂，并研究了它们对CO2加氢合成乙醇的催化性能。通过连续Rh浸渍和Fe沉积制备的Fe/Rh/CeO 2催化剂表现出优异的性能，在10.8%的CO₂转化率下，乙醇选择性达到19.8%，一次乙醇产率达到25.3 mmol·gRh−1·h−1。表征结果表明，在Fe之前顺序浸渍Rh可以促进Rh的分散和金属-载体的相互作用，增强CO₂的吸附和解离能力。该界面还促进吸收的b-CO32−转化为CO(l)，同时提供高浓度的CO(l)和HCOO*中间体，最终通过C -C偶联反应促进乙醇的生成。

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引用次数: 0

A cation-exchange membrane direct formate-CO2 fuel cell: Enabling simultaneous hydrogen production and CO2 utilization 一种阳离子交换膜直接甲酸-二氧化碳燃料电池：能够同时生产氢气和利用二氧化碳

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-30 DOI: 10.1016/j.fuproc.2025.108346

Jinxu Hao , Xianda Sun , Baibin Ma , Wanzhen Huang , Yuandong Yang , Xiaohan Ren

The carbon-neutral and carbon-negative energy utilization technologies have long been people pursued to realize the strategic objective of carbon neutrality. Herein, we propose a cation-exchange membrane (CEM) direct formate-CO₂ fuel cell that possesses the capability of simultaneously generating electricity and producing hydrogen, as well as continuously transforming carbon dioxide into pure sodium bicarbonate. Using the CO₂-derived formate fuel, the roof-of-concept CEM direct formate-CO₂ fuel cell exhibits a peak power density of 38 mW cm⁻² at 80 °C without the assistance of additional electrolyte. The fairly stable constant-current discharge curve along with the detected hydrogen and pure sodium bicarbonate prove the conceptual feasibility of this electricity‑hydrogen-bicarbonate co-production device. By adding alkaline electrolyte to the anode, we achieved a higher peak power density of 63 mW cm⁻² at the corresponding hydrogen production rate of 0.57 mL min⁻¹ cm⁻². More interestingly, the concentrations of pure NaHCO₃ solution can be controlled by adjusting the cathode water flow rate and fuel cell discharge current density. This work presents a theoretically feasible avenue for coupling hydrogen production and CO₂ utilization.

为实现碳中和的战略目标，碳中和和负碳能源利用技术一直是人们追求的目标。在此，我们提出了一种阳离子交换膜（CEM）直接甲酸-二氧化碳燃料电池，它具有同时发电和产氢的能力，并能不断地将二氧化碳转化为纯碳酸氢钠。使用二氧化碳衍生的甲酸燃料，CEM直接甲酸-二氧化碳燃料电池在80°C下，无需额外电解质的帮助，其峰值功率密度为38 mW cm - 2。相当稳定的恒流放电曲线以及检测到的氢气和纯碳酸氢钠证明了该电-碳酸氢钠联产装置在概念上的可行性。通过在阳极中加入碱性电解质，我们获得了更高的峰值功率密度为63 mW cm−2，相应的产氢速率为0.57 mL min−1 cm−2。更有趣的是，可以通过调节阴极水流量和燃料电池放电电流密度来控制纯NaHCO3溶液的浓度。这项工作提出了一个理论上可行的途径耦合氢气生产和二氧化碳利用。

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引用次数: 0

Optimization of advanced biogas production via the DiCOM bioprocess utilizing the biogas test plant BTP2: Insights from multifactorial analysis 利用沼气测试厂BTP2通过DiCOM生物工艺优化先进沼气生产：来自多因素分析的见解

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-30 DOI: 10.1016/j.fuproc.2025.108343

Mansuur Husein , Liang Cheng , Francis Kwaku Attiogbe , Abdallah Abdelfattah , Hany S. El-Mesery , Emmanuel Nkudede

This study introduces an innovative optimization of the DiCOM bioprocess, which integrates aerobic composting and anaerobic digestion, utilizing the Biogas Test Plant BTP2 configured as a continuous stirred-tank reactor (CSTR). The research seeks to enhance biogas production from sewage sludge by examining the effects of key operational parameters, including temperature, pH, inoculum-to-substrate ratio, and stirrer speed. This investigation is pioneering in its use of a DiCOM-CSTR configuration, distinguishing it from previous studies that focused on fixed-bed or sequential systems. This approach facilitates continuous operation and enhances process control. A multifactorial experimental design was employed, utilizing Box-Behnken Design (BBD) and Response Surface Methodology (RSM), along with Principal Component Analysis (PCA), to evaluate the combined impacts of critical parameters such as temperature, pH, inoculum-to-substrate ratio (ISR), and stirrer speed. Under optimized conditions, a thermophilic temperature of 65 °C, neutral pH (7.0–7.5), ISR of 0.63, and controlled stirring speed of 100 rpm contributed to achieving a methane yield of up to 64.2 % and hydrogen sulfide concentrations as low as 3.9 ppm. The results surpass previously reported values, confirming the effectiveness of the proposed configuration and methodological approach. The integrated PCA-RSM framework provided enhanced multivariate insight into parameter interactions and process dynamics. Future studies should deepen the understanding of microbial community dynamics, assess the long-term operational stability of the DiCOM process, and evaluate its adaptability across diverse organic waste streams. This study not only advances the design and optimization of DiCOM systems but also offers a scalable approach for sustainable energy recovery from organic waste.

本研究介绍了DiCOM生物工艺的创新优化，该工艺将好氧堆肥和厌氧消化结合起来，利用沼气试验装置BTP2配置为连续搅拌槽反应器（CSTR）。该研究旨在通过检查关键操作参数的影响，包括温度、pH值、接种物与底物比和搅拌速度，来提高污水污泥的沼气产量。这项研究在使用DiCOM-CSTR配置方面是开创性的，与之前专注于固定床或顺序系统的研究不同。这种方法有利于连续操作，并加强过程控制。采用Box-Behnken设计（BBD）和响应面分析法（RSM），结合主成分分析（PCA），对温度、pH、接种物与底物比（ISR）和搅拌速度等关键参数的综合影响进行了评价。在优化条件下，亲热温度为65°C，中性pH值（7.0-7.5），ISR为0.63，控制搅拌速度为100 rpm，甲烷收率高达64.2%，硫化氢浓度低至3.9 ppm。结果超过了先前报道的值，证实了所建议的配置和方法方法的有效性。集成的PCA-RSM框架为参数交互和过程动力学提供了增强的多变量洞察。未来的研究应深化对微生物群落动态的理解，评估DiCOM工艺的长期运行稳定性，并评估其在不同有机废物流中的适应性。这项研究不仅推进了DiCOM系统的设计和优化，而且为有机废物的可持续能源回收提供了一种可扩展的方法。

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引用次数: 0

Exploration on physicochemical properties and combustion behaviors of hydrochar from co-hydrothermal carbonization of swine manure and tea waste 猪粪与茶渣共水热炭化烃类的理化性质及燃烧行为探讨

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-27 DOI: 10.1016/j.fuproc.2025.108345

Ke Huang , Xin Zhang , Xiaozhen Li , Renxin Liu , Ke Wu

Co-hydrothermal carbonization (co-HTC) of animal manure and lignocellulosic biomass is recognized as an innovative approach to improve the quality of hydrochar derived from the HTC of animal manure. This study explored the effects of mass mixing ratio and temperature on the physicochemical properties and combustion behaviors of hydrochar from co-HTC of swine manure (SM) and tea waste (TW). The synergistic effect between SM and TW promoted the deoxygenation of SM and the aromatization of hydrochar. Compared to hydrochar from HTC of SM, the carbon content and higher heating value increased considerably, reaching the maximum of 48.64 % and 19.94 MJ/kg, respectively. Less lamellar structure and numerous microspheres were observed on the surface of hydrochar produced at 250 °C with 1/1 mass ratio. Additionally, the combustion performance of hydrochars from co-HTC were improved, as indicated by increases in the comprehensive combustion index and combustion stability index. Kinetic analysis showed that the activation energy of hydrochar increased with the increasing TW proportion and temperature. These findings provided valuable insights into the co-HTC of SM and TW, supporting the effective upgrading of animal manure and lignocellulosic biomass.

动物粪便和木质纤维素生物质的共水热碳化（co-HTC）被认为是提高动物粪便共水热碳化所得碳氢化合物质量的一种创新方法。研究了质量配比和温度对猪粪（SM）和茶渣（TW）共混氢炭理化性质和燃烧行为的影响。SM和TW的协同作用促进了SM的脱氧和烃类的芳构化。与SM的HTC生成的烃类相比，含碳量和高热值显著增加，最高分别达到48.64%和19.94 MJ/kg。在250℃条件下以1/1的质量比制备的碳氢化合物表面具有较少的片层结构和大量的微球。此外，通过综合燃烧指数和燃烧稳定性指数的提高，co-HTC的碳氢化合物的燃烧性能得到了改善。动力学分析表明，随着TW比例的增加和温度的升高，烃类的活化能增大。这些发现为SM和TW的共同htc提供了有价值的见解，支持了动物粪便和木质纤维素生物质的有效升级。

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引用次数: 0

Upcycling of EVA resin from photovoltaics into supercapacitor material and combustible gas by autogenic pressure pyrolysis 利用自生压力热解法将光伏EVA树脂升级为超级电容器材料和可燃气体

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-26 DOI: 10.1016/j.fuproc.2025.108344

Yadi Jia , Pinjing He , Fan Lü , Wei Peng , Hua Zhang , Khamphe Phoungthong

In response to the growing challenge of photovoltaic waste management, developing sustainable and value-added treatment strategies is imperative. In this study, ethylene-vinyl acetate (EVA) resins sourced from waste photovoltaic modules and virgin materials were utilized for the production of hierarchical porous carbon (HPC) and methane-rich combustible gas via autogenic pressure pyrolysis coupled with KOH activation. Temperature-dependent pyrolysis revealed that 700 °C was the optimal condition, yielding pyrolysis gas with a high methane content (43.39 vol%) and producing graphitized carbon spheres. Subsequent KOH activation generated HPC with a large specific surface area of 765.4 m²/g. When applied as a supercapacitor electrode in 6 mol/L KOH electrolyte, the HPC exhibited a high specific capacitance of 152 F/g at 0.2 A/g. Additionally, EVA resins with higher vinyl acetate content and melt index (MI) produced greater amounts of methane and pyrolytic carbon, while the resins with lower MI values showed enhanced reactivity toward chemical activation. This work offers a green and efficient route for the high-value recycling of EVA in PV waste and contributes to the sustainable synthesis of advanced HPC materials for energy storage applications.

为了应对日益增长的光伏废弃物管理挑战，开发可持续和增值处理策略势在必行。在这项研究中，利用来自废旧光伏组件和原始材料的乙烯-醋酸乙烯酯（EVA）树脂，通过自生压力热解结合KOH活化，生产分层多孔碳（HPC）和富含甲烷的可燃气体。温度相关热解实验结果表明，700℃为最佳热解条件，热解气体甲烷含量较高（43.39 vol%），热解产物为石墨化碳球。随后KOH活化生成的HPC具有765.4 m2/g的大比表面积。在6 mol/L KOH电解液中作为超级电容器电极时，在0.2 a /g下，HPC的比电容高达152 F/g。此外，具有较高醋酸乙烯含量和熔融指数（MI）的EVA树脂产生更多的甲烷和热解碳，而具有较低MI值的树脂对化学活化的反应性增强。这项工作为光伏废弃物中EVA的高价值回收提供了一条绿色高效的途径，并有助于可持续合成用于储能应用的先进高性能计算材料。

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引用次数: 0

Comparative chemiluminescence investigation of OH* radicals in laminar and turbulent multi-fuel air- and oxy-fuel flames on semi-industrial and laboratory scale including NOX-formation 层流和湍流多燃料空气和全氧燃料火焰中OH*自由基在半工业和实验室规模下的化学发光对比研究，包括nox的形成

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-26 DOI: 10.1016/j.fuproc.2025.108342

Stefan Schwarz , Georg Daurer , Joshua Slawatycki , Matthias Urban , René Prieler , Christian Gaber , Martin Demuth , Christoph Hochenauer

Chemiluminescence emitted by the de-excitation of excited hydroxyl radicals (OH*), allows for several insights into combustion processes. The presented study investigates air- and oxy-fuel combustion of natural gas with hydrogen enrichment up to 100%, using both small-scale laminar flames and turbulent high-impulse flames (50–100 kW). The obtained results from the laminar 1 kW flames from the laboratory burner are then used, to interpret the influence of turbulence and chemistry influence from an industrial scale multi-fuel multi-oxidizer burner. The measurements performed for the laboratory burner were also compared to simulations. Experimental data were compared to 1D simulations, showing good agreement in trends. However, in turbulent flames, turbulence effects far exceeded those of combustion chemistry. While laminar flames exhibited the highest chemiluminescence intensity in CH₄-air combustion in both experiments and simulations, the maximum in turbulent combustion experiments occurred in oxy-fuel combustion, with hydrogen and natural gas performing similarly. Oxy-fuel flames showed similar chemiluminescence intensities, increased by 2 orders of magnitude, compared to turbulent air-fuel combustion. Additionally, the changes in flame shape and reaction zone size for hydrogen-enrichment in air-fuel combustion were investigated in terms of NO_X formation, where OH* imaging proved its potential for emission reduction.

化学发光发射激发羟基自由基（OH*）的去激发，允许几个洞察燃烧过程。本研究利用小型层流火焰和湍流高冲量火焰（50-100千瓦），研究了富氢率高达100%的天然气在空气和氧气燃料下的燃烧。然后使用实验室燃烧器层流1 kW火焰获得的结果来解释工业规模多燃料多氧化剂燃烧器的湍流影响和化学影响。对实验室燃烧器进行的测量也与模拟进行了比较。将实验数据与一维模拟数据进行了比较，结果表明趋势一致。然而，在湍流火焰中，湍流效应远远超过了燃烧化学效应。在实验和模拟中，层流火焰在ch4 -空气燃烧中表现出最高的化学发光强度，而在湍流燃烧实验中，最大的化学发光强度出现在氧燃料燃烧中，氢气和天然气的化学发光强度相似。与湍流空气燃料燃烧相比，全氧燃料火焰表现出相似的化学发光强度，提高了2个数量级。此外，从NOX形成的角度研究了空气燃料燃烧中富氢火焰形状和反应区大小的变化，其中OH*成像证明了其减少排放的潜力。

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引用次数: 0

Analysis of configurations for coupling an active magnetic regenerator with heat exchangers for hydrogen liquefaction 氢液化用主动磁蓄热器与热交换器耦合结构分析

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-25 DOI: 10.1016/j.fuproc.2025.108337

Angelica Liponi , Mathieu Tenda , Rasmus Bjørk , Umberto Desideri

This paper presents a study of four different configurations for performing the heat exchange between helium—supplied by an active magnetic regenerator (AMR)—and hydrogen in the 82–20 K range for hydrogen liquefaction. We evaluate helium mass flow requirements and analyse the configurations considering both technical and exergetic aspects. Results show a strong influence of the temperature difference of helium at the AMR cold end on the required helium mass flow rate, which ranges from 35 to over 75 times the liquid hydrogen mass flow rate. The exergy efficiency of the cooling stage, not including AMR losses, ranges between 33 % and 49 %. The use of a single AMR causes significant temperature differences between helium and hydrogen in the heat exchangers leading to large exergy losses (representing over 95 % of the overall losses). We finally show that this issue can be overcome using multiple AMR in parallel with increasing cold-end temperatures.

本文研究了在82 ~ 20k范围内，由主动磁再生器（AMR）提供的氦与氢之间进行热交换的四种不同配置。我们评估了氦气的质量流量要求，并从技术和燃烧两个方面分析了配置。结果表明，AMR冷端氦气温差对所需氦气质量流量的影响较大，其范围为液氢质量流量的35 ~ 75倍以上。冷却阶段的火用效率（不包括AMR损失）在33%到49%之间。使用单个AMR会导致热交换器中氦和氢之间的显著温差，从而导致巨大的火用损失（占总损失的95%以上）。我们最后表明，这个问题可以通过增加冷端温度同时使用多个AMR来克服。

引用次数: 0