Chemical Engineering and Processing - Process Intensification最新文献_第8页

Microwave heating of uranium compounds: A novel process intensification approach 微波加热铀化合物：一种新的过程强化方法

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-26 DOI: 10.1016/j.cep.2025.110640

Pasupuleti Kalpana , Jayanta Mondal , Sandeep Singh , Sonal Gupta , S. Manna , Santosh Das , S.K. Satpati , Rishi Verma

Microwave heating is a distinctive thermal processing technique where heat is generated within the target material, unlike conventional furnace heating, where heat propagates inward from the surface. This characteristic enables selective heating of specific compounds in a mixture and thereby intensifying the process. To explore the potential of microwave heating for process intensification in uranium processing, various uranium compounds— i.e. ammonium diuranate (ADU), uranium oxides (UO₂, U₃O₈, UO₃), and uranium tetrafluoride (UF₄)—were subjected to a 2.45 GHz microwave source. Experimental observations reveal considerable differences in the temperature rise among these compounds due to variations in their dielectric properties. The dielectric coefficients, which determine their response under an RF field, were quantified through an experimental setup involving S21 parameter measurements using a vector network analyzer (VNA). A notable outcome of these experiments is the demonstration that microwave-assisted calcination of ADU can be significantly enhanced by introducing U₃O₈ as a seed material. Due to its higher microwave absorption compared to ADU, U₃O₈ initiates localized reactions that progressively convert ADU to U₃O₈, ultimately enabling near-complete transformation. This study presents this novel approach of employing U₃O₈ as a seed material for microwave-based calcination of ADU. XRD of mixed compound at different stages of heating clearly indicate effective dehumidification and calcinations of ADU and formation of U₃O₈.Quality of obtained U₃O₈ is analyzed to find O/U ratio of 2.67, average particle size of 25–30 µm and specific surface area of 4.8 m²/gm.

微波加热是一种独特的热处理技术，热量在目标材料内部产生，不像传统的炉加热，热量从表面向内传播。这一特性使得可以对混合物中的特定化合物进行选择性加热，从而强化该过程。为了探索微波加热在铀加工过程中强化的潜力，各种铀化合物——即重铀酸铵（ADU）、铀氧化物（UO₂，U₃O₈，UO₃）和四氟化铀（UF₄）——受到2.45 GHz微波源的影响。实验观察表明，由于介电性质的变化，这些化合物之间的温升有相当大的差异。通过使用矢量网络分析仪（VNA）测量S21参数的实验装置，对决定其在射频场下响应的介电系数进行了量化。这些实验的一个显著结果是，通过引入U₃O₈作为种子材料，可以显著提高ADU的微波辅助焙烧效果。由于它比ADU有更高的微波吸收率，U₃O₈引发局部反应，逐渐将ADU转化为U₃O₈，最终实现几乎完全的转化。本研究提出了采用U₃O₈作为ADU微波焙烧种子材料的新方法。混合化合物在不同加热阶段的XRD结果清楚地表明ADU的有效除湿和煅烧以及U3O8的生成。对所得U3O8质量进行分析，得到O/U比为2.67，平均粒径为25-30µm，比表面积为4.8 m2/gm。

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引用次数: 0

Study of a composite phase change material with high thermal conductivity and latent heat based on mannitol–dulcitol/MC@rGO 甘露醇-甘露醇/MC@rGO高导热潜热复合相变材料的研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-21 DOI: 10.1016/j.cep.2025.110637

Fulin Shi , Xinyu He , Wanqing Wu , Dedi Zhou , Min Du , Haokun Shi , Qinggong Zheng

The mannitol - dulcitol eutectic composite phase change material (PCM) exhibits excellent latent heat storage capacity (301.2 J/g) and an appropriate phase change temperature, showing great potential for application in the thermal management of lithium-ion batteries (LIB). In this study, a composite phase change material (CPCM) with both high latent heat and high thermal conductivity was designed and fabricated by constructing a three-dimensional thermal conduction network using micronized cellulose (MC) and reduced graphene oxide (rGO). The MC, derived from corn stalks via delignification and hemicellulose removal, serves as the structural framework for the thermal conduction pathway. Meanwhile, the incorporation of rGO enhances thermal conductivity significantly through hydrogen bonding and its integration into the thermal conduction network. The results demonstrate that the CPCM achieves an impressive thermal conductivity of 1.035 W/(m·K) and a high phase change enthalpy of 251.8 J/g at a low filler loading of 9 wt% MC@rGO, indicating excellent thermal management performance at low filler content. This work provides an efficient solution for the development of novel phase change thermal interface materials for energy storage systems and electronic thermal dissipation.

甘露醇- dulcitol共晶复合相变材料（PCM）具有良好的潜热储存能力（301.2 J/g）和适宜的相变温度，在锂离子电池（LIB）热管理中具有很大的应用潜力。本研究利用微粉纤维素（MC）和还原氧化石墨烯（rGO）构建三维导热网络，设计并制备了一种具有高潜热和高导热的复合相变材料（CPCM）。MC通过脱木质素和半纤维素去除从玉米秸秆中提取，作为热传导途径的结构框架。同时，还原氧化石墨烯的加入通过氢键结合并融入热传导网络，显著增强了导热性。结果表明，在填料含量为9 wt% MC@rGO时，CPCM的导热系数为1.035 W/(m·K)，相变焓为251.8 J/g，表明在填料含量较低时，CPCM具有良好的热管理性能。这项工作为开发用于储能系统和电子散热的新型相变热界面材料提供了有效的解决方案。

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引用次数: 0

Computational fluid dynamics investigation of dynamic evolution of gas mass transfer and separation in multichannel tubular Silicalite-1 membrane 多通道管状硅石-1膜内气体传质与分离动力学演化的计算流体动力学研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-19 DOI: 10.1016/j.cep.2025.110635

Zhuoming Yang , Dongjie Yin , Weiqiu Huang , Xufei Li , Xinya Wang , Xiaotong Li , Ping Xia , Jing Zhong

Silicalite-1 membrane is widely used in the field of gas separation, but its dynamic mass transfer mechanism is not very clear due to the complicated and synergistic effects of pressure, flow rate and porous structure. Based on the Finite Element Method (FEM) with the core advantage of decoupling complex transmission paths, the dynamic evolution of gas separation behavior of the membrane was analyzed from the microscopic to the macroscopic level through multi-physics field coupling, using two different 3D CFD models: both microscopic structure within the membrane and macro tubular membrane module. Herein, using programming software to extract simulation data from the model for grey correlation analysis yielded optimized parameters for the industrial membrane module: inlet pressure of 0.5 MPa, inlet flow velocity of 0.3 m/s, tubular membrane length of 1 m, and volumetric flow rate of 9.42 × 10⁻⁵ m³/s. The H₂ permeation flux reached 2.52 mol/(m²·s), with a CO₂/H₂ selectivity of 0.602. The utilization of a combined simulation of two distinct CFD models serves as a vital visualization tool for observing the dynamic evolution of gas mass transfer and separation processes within membranes, which provides quantitative evidence for the industrial design and operational parameter optimization of membrane modules.

硅石-1膜广泛应用于气体分离领域，但由于压力、流量和多孔结构的复杂协同作用，其动态传质机理并不十分清楚。基于具有解耦复杂传输路径核心优势的有限元法（FEM），采用膜内微观结构和宏观管状膜模块两种不同的三维CFD模型，通过多物理场耦合，从微观到宏观层面分析了膜气体分离行为的动态演化。在此，利用编程软件从模型中提取仿真数据进行灰色关联分析，得到工业膜模块的优化参数：进口压力0.5 MPa，进口流速0.3 m/s，管膜长度1 m，容积流量9.42 × 10⁻5 m³/s。H2通过通量达到2.52 mol/(m2·s)， CO2/H2选择性为0.602。利用两种不同CFD模型的联合模拟，为观察膜内气体传质和分离过程的动态演变提供了重要的可视化工具，为膜模块的工业设计和操作参数优化提供了定量依据。

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引用次数: 0

Synergistic integration of sonication and cold plasma for intensified food processing: Mechanisms, applications, limitations, and future Prospects 超声和冷等离子体在强化食品加工中的协同整合：机制、应用、局限性和未来展望

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-18 DOI: 10.1016/j.cep.2025.110631

Chirantan Sandip Saigaonkar , Sandhya R Shewale , Uday S Annapure

Background

Advancements in food processing aim to preserve nutrient and bioactive integrity while enhancing microbiological safety without relying on thermal methods. Sonication-Assisted Cold Plasma (SACP) integrates mechanical ultrasound forces with reactive plasma chemistry to overcome limitations of individual treatments, such as limited penetration depth and uneven effects, making it a promising approach for preserving food quality and safety.

Methods

A systematic literature review was conducted following PRISMA 2020 guidelines. Peer-reviewed research articles published between January 2020 and May 2025 were identified from electronic databases, including Scopus, PubMed, and ScienceDirect. Studies evaluating combined ultrasound and cold plasma treatments on food dehydration, microbial inactivation, extraction, and protein modification were selected for narrative synthesis.

Results

SACP exhibited up to 47 % reduction in drying time, achieving over 3-log microbial load reductions. Mechanistically, ultrasound enhances cavitation and mass transfer, while cold plasma generates reactive species that oxidize microbial cells and modify food macromolecules. Challenges remain in scaling technology for industrial throughput, standardizing treatment protocols, and assessing byproduct safety and long-term product stability.

Conclusions

The synergistic integration of ultrasound and cold plasma presents a promising non-thermal approach for food processing with demonstrated efficiency, safety, and preservation of food quality. Future efforts should prioritize protocol harmonization, real-time process control, comprehensive safety evaluation, and economic feasibility to enable commercial adoption and sustainable food manufacturing.

食品加工的进步旨在保持营养和生物活性的完整性，同时提高微生物的安全性，而不依赖于热方法。超声辅助冷等离子体（SACP）将机械超声力与反应性等离子体化学相结合，克服了个体处理的局限性，如有限的穿透深度和不均匀的效果，使其成为一种有前途的方法，以保持食品质量和安全。方法按照PRISMA 2020指南进行系统文献综述。在2020年1月至2025年5月期间发表的同行评议研究文章从电子数据库中确定，包括Scopus， PubMed和ScienceDirect。本文选取超声和冷等离子体联合处理对食品脱水、微生物灭活、提取和蛋白质修饰的研究作为叙述综合。结果sacp的干燥时间减少了47%，微生物负荷减少了3倍以上。在机械上，超声波增强空化和传质，而冷等离子体产生氧化微生物细胞和修饰食物大分子的活性物质。挑战仍然存在于工业吞吐量的规模化技术，标准化处理方案，评估副产品安全性和长期产品稳定性。结论超声和冷等离子体的协同整合为食品加工提供了一种有前途的非热方法，具有高效、安全、保鲜的特点。未来的工作应优先考虑协议协调、实时过程控制、综合安全评估和经济可行性，以实现商业应用和可持续食品生产。

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引用次数: 0

Industrial micronization of defatted rice bran by-product: A sustainable approach for the development of a nutritious and safe ingredient 脱脂米糠副产品的工业微粉化：开发营养和安全成分的可持续方法

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-18 DOI: 10.1016/j.cep.2025.110634

Adreano Gomes Spessato , Silvia Leticia Rivero Meza , Brenda Dannenberg Kaster , Jircelene Brombilla , Larissa Alves Rodrigues , Sonia Medina , Maurício de Oliveira

Whole rice bran, an underutilized agro-industrial by-product, is naturally rich in lipids, proteins, dietary fiber, vitamins, minerals, and phytochemicals. Despite its potential, rice bran, which represents 11 % of rice milling, is mainly used for animal feed or edible oil. During oil extraction, defatted rice bran is generated, accounting for 82 % of processing and causing environmental and economic challenges. Micronization has emerged as a promising process intensification strategy to add value to defatted rice bran by enhancing functional properties. This study evaluated the effects of large-scale micronization on physicochemical, nutritional, and microbiological properties. Micronization increased apparent density and reduced water activity and moisture. Dietary fiber increased by 28 %, protein by 17 %, and lutein by 39 %. Essential nutrients improved as follows: amino acids by 27 %, minerals by 7 %, and vitamin by 12 %. Multivariate analysis confirmed micronization as the main factor driving nutritional improvements and producing more homogeneous and stable profiles across three production years. Furthermore, the microbiological assessment confirmed compliance with official regulatory standards. Overall, the findings highlight micronization as a robust and scalable strategy for transforming defatted rice bran into a safe, functional, and value-added ingredient with high potential for innovative applications in the food industry.

全米糠是一种未充分利用的农工副产品，天然富含脂质、蛋白质、膳食纤维、维生素、矿物质和植物化学物质。尽管米糠潜力巨大，但占稻米加工11%的米糠主要用于动物饲料或食用油。在榨油过程中，产生脱脂米糠，占加工的82%，并造成环境和经济挑战。微粉化已成为一种有前途的工艺强化策略，通过增强功能特性来增加脱脂米糠的价值。本研究评估了大规模微粉化对理化、营养和微生物特性的影响。微粉化增加了表观密度，降低了水活度和水分。膳食纤维增加28%，蛋白质增加17%，叶黄素增加39%。必需营养素改善如下：氨基酸增加27%，矿物质增加7%，维生素增加12%。多变量分析证实，微粉化是推动营养改善的主要因素，并在三个生产年内生产出更均匀和稳定的产品。此外，微生物评估证实符合官方监管标准。总体而言，研究结果强调，微粉化是一种稳健且可扩展的战略，可将脱脂米糠转变为一种安全、功能性和增值成分，在食品工业中具有创新应用的巨大潜力。

{"title":"Industrial micronization of defatted rice bran by-product: A sustainable approach for the development of a nutritious and safe ingredient","authors":"Adreano Gomes Spessato , Silvia Leticia Rivero Meza , Brenda Dannenberg Kaster , Jircelene Brombilla , Larissa Alves Rodrigues , Sonia Medina , Maurício de Oliveira","doi":"10.1016/j.cep.2025.110634","DOIUrl":"10.1016/j.cep.2025.110634","url":null,"abstract":"<div><div>Whole rice bran, an underutilized agro-industrial by-product, is naturally rich in lipids, proteins, dietary fiber, vitamins, minerals, and phytochemicals. Despite its potential, rice bran, which represents 11 % of rice milling, is mainly used for animal feed or edible oil. During oil extraction, defatted rice bran is generated, accounting for 82 % of processing and causing environmental and economic challenges. Micronization has emerged as a promising process intensification strategy to add value to defatted rice bran by enhancing functional properties. This study evaluated the effects of large-scale micronization on physicochemical, nutritional, and microbiological properties. Micronization increased apparent density and reduced water activity and moisture. Dietary fiber increased by 28 %, protein by 17 %, and lutein by 39 %. Essential nutrients improved as follows: amino acids by 27 %, minerals by 7 %, and vitamin by 12 %. Multivariate analysis confirmed micronization as the main factor driving nutritional improvements and producing more homogeneous and stable profiles across three production years. Furthermore, the microbiological assessment confirmed compliance with official regulatory standards. Overall, the findings highlight micronization as a robust and scalable strategy for transforming defatted rice bran into a safe, functional, and value-added ingredient with high potential for innovative applications in the food industry.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"219 ","pages":"Article 110634"},"PeriodicalIF":3.9,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145568474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental verification for intensification mechanism and template role of nanobubbles as nucleation sites in reaction crystallization of diclofenac 纳米气泡在双氯芬酸反应结晶中的强化机理及模板作用的实验验证

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-18 DOI: 10.1016/j.cep.2025.110633

Bo Shi , Jingzhou Guo , Zhengtao Xu , Wei Mao , Yuan Pu , Dan Wang

Nanobubble has attracted extensive research attention due to their anomalous thermodynamic behavior while fundamental mechanisms remain elusive. This study aims to investigate the nucleation-crystallization of diclofenac in acidic environments as model reaction, employing in-situ methodologies to systematically analyze nanobubble synergy during nucleation-growth. Experimental verification of templating role and mechanism of nanobubbles as nucleation sites in reaction crystallization of diclofenac is performed. Kinetic studies reveal that nanobubbles can reduce the system's apparent active energy by 72.181 kJ/mol and decrease the apparent preexponential factor to 1.4 × 10⁻⁶. Additionally, it is observed that highly dense nanobubble clusters can function as templates for synthesizing hollow particles.

纳米气泡由于其异常的热力学行为引起了广泛的研究，但其基本机理仍不清楚。本研究旨在研究双氯芬酸在酸性环境中的成核结晶作为模型反应，采用原位方法系统分析纳米气泡在成核生长过程中的协同作用。实验验证了纳米气泡作为成核点在双氯芬酸反应结晶中的模板作用和机理。动力学研究表明，纳米气泡可以使体系的表观活性能降低72.181 kJ/mol，将表观指前因子降低到1.4 × 10⁻26。此外，高密度的纳米气泡团簇可以作为合成空心粒子的模板。

引用次数: 0

Study on the dynamic mechanisms of adsorption and migration of toluene on activated carbon surfaces under high gravity 高重力条件下活性炭表面吸附迁移甲苯的动力学机理研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-18 DOI: 10.1016/j.cep.2025.110632

Guo Qiang , Niu Jiahao , Qi Guisheng

To address the limitations of conventional fixed bed adsorption methods in VOCs removal, this study systematically investigates the adsorption and desorption behaviors of toluene on activated carbon in a rotating packed bed under high gravity. As the β increased from 0 to 80, the adsorption capacity of AC rose from 115.3 to 134.2 mg/g and the surface coverage increased from 0.478 to 0.657, representing a clear improvement in adsorbent utilization. The Yoon–Nelson model fitting showed that the 50% breakthrough time was extended from 52.73 to 63.76 min, while the adsorption rate constant increased from 0.0869 to 0.0990 min⁻¹. Desorption experiments demonstrated that regeneration efficiency was enhanced at elevated β, and after three adsorption–desorption cycles, the adsorption capacity remained above 95% of the initial value, confirming excellent cyclic stability. Mechanistic analysis revealed that high gravity intensifies interfacial mass transfer and promotes molecular diffusion, thereby improving both adsorption efficiency and regeneration performance. These findings provide both theoretical and experimental support for the design and scale-up of high gravity systems for efficient VOCs control.

针对传统固定床吸附法去除VOCs的局限性，系统研究了高重力下旋转填料床对甲苯的吸附和解吸行为。当β值从0增加到80时，活性炭的吸附量从115.3 mg/g增加到134.2 mg/g，表面覆盖率从0.478增加到0.657，吸附剂利用率明显提高。yon - nelson模型拟合表明，50%的突破时间从52.73分钟延长到63.76分钟，吸附速率常数从0.0869分钟增加到0.0990分钟。脱附实验表明，在β浓度升高时，再生效率提高，经过3次吸附-脱附循环后，吸附容量仍保持在初始值的95%以上，具有良好的循环稳定性。机理分析表明，高重力加剧了界面传质，促进了分子扩散，从而提高了吸附效率和再生性能。这些发现为高效控制VOCs的高重力系统的设计和规模化提供了理论和实验支持。

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引用次数: 0

Comprehensive analysis of CO2 capture from reformer stack in methanol production via steam reforming: Evaluation of technical, economic, and environmental impacts 通过蒸汽重整甲醇生产中重整炉堆二氧化碳捕获的综合分析：技术、经济和环境影响的评估

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-18 DOI: 10.1016/j.cep.2025.110636

Mahdi Haghi , Arman Mohammadi Abdehvand , Asghar Molaei Dehkordi

This study assesses the techno-economic and environmental feasibility of establishing a CO₂ recovery (CDR) unit at a methanol plant using amine solvents to recover CO₂ from its flue gas. The results demonstrate that adding piperazine (PZ) to monoethanolamine (MEA) as the solvent significantly enhances CO₂ absorption efficiency, with an optimal performance achieved at 10:20 wt.% of PZ:MEA (i.e., 66% recovery vs. 59% for MEA alone). The effects of recovering varying amounts of CO₂ from the reformer stack (i.e., 5–25 t/h) and injecting it under two scenarios (into the reformer feed gas vs. the synthesis feed gas) on methanol yield, utility consumption, and emissions were thoroughly investigated. The optimal capacity of 15 t/h for maximizing methanol production was chosen, and the CDR unit was simulated accordingly. The economic assessment included capital and operating costs, while the environmental assessment comprehensively evaluated net CO₂ emissions, thereby instilling confidence in the study’s conclusions. The economic evaluation reveals that the total capital investment cost of the project, along with operating costs, was estimated at approximately $46.1 million and $3.5 million per year, respectively. However, the total required excess energy for solvent regeneration and compression was 2708 kW of electricity, 45 tons of low-pressure steam, and 3270 tons of cooling water, corresponding to a 15-ton-per-hour CO₂ recovery rate. Moreover, an environmental analysis reveals a paradox: while CO₂ recovery reduces direct stack emissions, the indirect emissions from utility services result in a net increase in CO₂ output. The CO₂ intensity per ton of methanol rises by 20–26% (i.e., 0.5 to 0.53-ton CO₂/ton Methanol) compared to the base case design (0.42-ton CO₂/ton Methanol).

本研究评估了在甲醇厂建立二氧化碳回收（CDR）装置的技术经济和环境可行性，该装置使用胺溶剂从其烟气中回收二氧化碳。结果表明，在单乙醇胺（MEA）中加入哌嗪（PZ）作为溶剂，可以显著提高CO2的吸收效率，在PZ:MEA的比例为10:20 wt.%时达到最佳效果（即回收率为66%，单乙醇胺为59%）。从重整炉堆中回收不同数量的二氧化碳（即5 - 25t /h）并在两种情况下（注入重整炉原料气和合成原料气）对甲醇产量、效用消耗和排放的影响进行了深入研究。选择了15t /h的最佳甲醇产量，并对CDR装置进行了模拟。经济评估包括资本和运营成本，而环境评估则全面评估二氧化碳净排放量，从而为研究结论注入信心。经济评价显示，该项目的总资本投资费用以及运营费用估计分别为每年约4610万美元和350万美元。然而，溶剂再生和压缩所需的总多余能量为2708千瓦电、45吨低压蒸汽和3270吨冷却水，对应于每小时15吨的CO2回收率。此外，一项环境分析揭示了一个悖论：虽然二氧化碳回收减少了直接烟囱排放，但公用事业服务的间接排放导致二氧化碳排放量的净增加。与基本情况设计（0.42吨二氧化碳/吨甲醇）相比，每吨甲醇的二氧化碳强度增加了20-26%（即0.5至0.53吨二氧化碳/吨甲醇）。

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引用次数: 0

A perspective on process intensification in the textile industry: A pathway towards sustainable apparel sector 纺织业过程集约化的观点：通往可持续服装行业的途径

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-16 DOI: 10.1016/j.cep.2025.110630

Sagnik Chowdhury Shanko , Md. Mizanur Rahman , Mohidus Samad Khan

The apparel sector, despite playing an important role in economic development and employment generation around the world, poses significant sustainability challenges due to being highly resource-intensive and contributing to severe pollution of the environment. Therefore, this sector faces growing pressure from stakeholders to adopt cleaner production practices throughout the value chain, aiming to reduce resource consumption and to improve environmental impacts. Process Intensification (PI) tackles these challenges by redesigning unit operations and production strategies across the production processes. This article presents a novel viewpoint through a structured analysis of Process Intensification applications across textile processing stages, extending the scope toward waste minimization, hazardous chemical substitution, and resource recovery. Key textile processing stages, including yarn production and preparation, weaving, and wet processing, are analyzed with respect to the integration of different PI technologies such as compact spinning, foam sizing, pre-wet sizing, multi-phase loom, supercritical CO₂ dyeing, plasma treatment, bio-based dyeing, chemical recovery, and AI-based quality inspection. The article explores the technical foundations, operational benefits and challenges of these innovations. Compared to traditional technologies, counterpart PI technologies can reduce energy input, water consumption, chemical consumption, and GHG emissions by up to 86%, 100%, 95% and 84%, respectively. Along with policy frameworks, strategic investment, and capacity building, PI serves as a strategic catalyst in sustainable apparel manufacturing by optimizing resource, automation, redesigning recipes, improving productivity, and reducing pollution through recycling and upcycling. This article underscores the critical role of PI in fostering cleaner production and shaping the future of textile manufacturing.

尽管服装行业在世界各地的经济发展和创造就业方面发挥着重要作用，但由于高度资源密集型和造成严重的环境污染，该行业面临着重大的可持续性挑战。因此，该行业面临着来自利益相关者越来越大的压力，要求在整个价值链中采用清洁生产实践，旨在减少资源消耗并改善环境影响。过程强化（PI）通过在生产过程中重新设计单元操作和生产策略来解决这些挑战。本文通过对纺织加工阶段过程强化应用的结构化分析，提出了一种新的观点，将范围扩展到废物最小化，危险化学品替代和资源回收。本文分析了纺织加工的关键阶段，包括纱线生产和准备、织造和湿法加工，并结合了不同的PI技术，如紧密纺纱、泡沫上浆、预湿上浆、多相织机、超临界CO2染色、等离子体处理、生物基染色、化学回收和基于人工智能的质量检测。本文探讨了这些创新的技术基础、运营效益和挑战。与传统技术相比，相应的PI技术可以分别减少86%、100%、95%和84%的能源投入、水消耗、化学品消耗和温室气体排放。除了政策框架、战略投资和能力建设外，PI还通过优化资源、自动化、重新设计配方、提高生产率以及通过回收和升级回收减少污染，成为可持续服装制造业的战略催化剂。本文强调了PI在促进清洁生产和塑造纺织制造业未来方面的关键作用。

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引用次数: 0

Effects of hydrogen blending ratio and nozzle-to-wall distance on pollutant formation in methane/air premixed jet flames under flame-wall interaction 火焰-壁面相互作用下氢气配比和喷嘴-壁面距离对甲烷/空气预混射流火焰中污染物形成的影响

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2025-11-14 DOI: 10.1016/j.cep.2025.110629

Feiyang Li , Jianfeng Pan , Yuejin Zhu , Zhongjia Li , Muhammad Nauman , Wenming Yang

Based on CFD software, this study establishes a computational model for methane/air premixed jet combustion under wall interaction. With experimental validation, the study systematically analyzes the influence of nozzle-to-wall distance

H

(6–30 mm, 3 mm intervals) and hydrogen blending ratio

α_{H_{2}}

(0%-40%) on the formation mechanisms of CO and NO_x. Results indicate that with increasing hydrogen blending ratio, NO emissions decrease at low

H

due to suppression of the key Prompt-pathway reaction R320 (CH + N₂ = HCN + N), reducing NO formation. Conversely, at high

H

, NO emissions increase as a result of enhanced temperature and residence time, which promote NO generation via the Thermal pathway. Regarding NO₂ emissions, the opposite trends with increasing hydrogen blending ratio stem from the shift from NO₂-forming reactions at low

H

to NO₂-consuming reactions at high

H

. CO emissions increase with the hydrogen blending ratio at low

H

, while they decrease with the hydrogen blending ratio at high

H

. This study reveals the coupled mechanisms governing pollutant formation pathways in hydrogen-enriched premixed flames, providing a theoretical foundation for the optimized design and emission control of low-nitrogen combustors.

基于CFD软件，建立了壁面相互作用下甲烷/空气预混射流燃烧的计算模型。通过实验验证，系统分析了喷嘴与壁面距离H （6 ~ 30 mm，间隔3 mm）和混氢比例αH2（0% ~ 40%）对CO和NOx形成机理的影响。结果表明，随着掺氢比例的增加，低H下NO排放减少，这是由于抑制了关键的提示通路反应R320 (CH + N2 = HCN + N)，减少了NO的生成。相反，在高H下，由于温度和停留时间的增加，NO排放量增加，这促进了通过热途径生成NO。对于NO2的排放，随着掺氢比的增加，从低H下生成NO2的反应向高H下消耗NO2的反应转变，呈现出相反的趋势。CO排放量随着低H下掺氢比的增加而增加，而随着高H下掺氢比的增加而减少。为低氮燃烧器的优化设计和排放控制提供理论依据。

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引用次数: 0