Chemical Engineering and Processing - Process Intensification最新文献_第3页

Rapid method for the prediction of basic performance data of a packed bed with a structured packing using a simple CFD simulation 基于简单CFD模拟的结构化填料床基本性能数据快速预测方法

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.cep.2026.110698

Halina Murasiewicz , Jerzy Maćkowiak , Jan F. Maćkowiak , Reiner Chromik

To date, developing robust design principles for distillation and absorption processes using random and structured packing has necessitated expensive and time-consuming experimental investigations. These studies are essential for predicting basic performance data (BPD), such as flooding gas velocity and pressure drop within the operating range. The upper limit, the flooding line, has traditionally been estimated primarily through experiments on air-water simulator plants. This established procedure, while effective, is very costly and requires significant time and effort, presenting a major challenge for manufacturers and researchers seeking to reduce this reliance on physical testing.

In this work, a novel method is presented to address this challenge. The proposed approach is based on a physical model of a suspended bed of droplets (SBD) combined with CFD simulation. This methodology allows for the generation of a packing's complete operating range, including the flooding line, without any need for experimental data.

To validate this new concept, an experimental hydraulic investigation using a laboratory distillation plant under low and normal pressure with various test systems were conducted. The results were then compared with data from CFD simulations for the commercial structured packing R500Y from RVT. A satisfactory agreement was observed between the experimental and simulated data, with a deviation of less than ±10%. This successful validation demonstrates that this approach offers a simple, fast, and reliable method to significantly reduce the experimental effort required for modeling, optimizing, and predicting the performance of structured packing.

迄今为止，为使用随机和结构化填料的蒸馏和吸收过程开发稳健的设计原则，需要进行昂贵且耗时的实验研究。这些研究对于预测基本性能数据（BPD）至关重要，例如作业范围内的驱油气速和压降。上限，即淹水线，传统上主要是通过在空气-水模拟装置上的实验来估计的。这种已建立的程序虽然有效，但非常昂贵，需要大量的时间和精力，这对寻求减少对物理测试的依赖的制造商和研究人员提出了重大挑战。在这项工作中，提出了一种新的方法来解决这一挑战。该方法基于液滴悬浮床（SBD）的物理模型，并结合CFD仿真。这种方法允许生成填料的完整操作范围，包括注水线，而不需要任何实验数据。为了验证这一新概念，利用实验室蒸馏装置在低压和常压下进行了水力实验研究，并采用了各种测试系统。然后将结果与RVT公司商用结构化填料R500Y的CFD模拟数据进行了比较。实验结果与模拟结果吻合较好，误差小于±10%。这一成功的验证表明，该方法提供了一种简单、快速、可靠的方法，可以显著减少建模、优化和预测结构化包装性能所需的实验工作量。

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引用次数: 0

From response surface methodology to artificial intelligence: process intensification frameworks for sustainable bioethanol production 从响应面方法到人工智能：可持续生物乙醇生产的过程强化框架

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-03 DOI: 10.1016/j.cep.2026.110697

Saravana Kannan Thangavelu

The global transition toward low-carbon and sustainable energy systems has intensified research on bioethanol production from lignocellulosic and waste biomass, yet large-scale deployment remains limited by process complexity, feedstock heterogeneity, and fragmented optimization strategies that inadequately capture nonlinear interactions and multi-objective trade-offs. This review critically synthesizes recent advances in process intensification and optimization across the entire bioethanol production chain, encompassing pretreatment, hydrolysis, fermentation, and product recovery. Conventional statistical tools, including Response Surface Methodology, Central Composite Design, and Box–Behnken Design, remain valuable for structured experimentation and identification of local optima with minimal experimental effort; however, their predictive robustness diminishes in highly nonlinear, multivariable systems. In contrast, artificial intelligence and machine learning approaches such as Artificial Neural Networks, Support Vector Machines, Genetic Algorithms, Particle Swarm Optimization, and the Non-dominated Sorting Genetic Algorithm II enable accurate nonlinear modeling, global optimization, and explicit handling of conflicting objectives related to yield, energy consumption, inhibitor formation, and cost. Particular emphasis is placed on emerging hybrid frameworks that integrate statistical design, AI-based surrogate models, and metaheuristic optimization to enhance prediction fidelity, process efficiency, and scalability. Furthermore, advances in omics-guided metabolic engineering, green solvent pretreatments, lignin valorization, and digital twins, coupled with real-time AI-driven process control.

随着全球向低碳和可持续能源系统的转型，木质纤维素和废弃生物质生产生物乙醇的研究得到了加强，但大规模部署仍然受到工艺复杂性、原料异质性和碎片化优化策略的限制，这些优化策略无法充分捕捉非线性相互作用和多目标权衡。这篇综述批判性地综合了整个生物乙醇生产链中工艺强化和优化的最新进展，包括预处理、水解、发酵和产品回收。传统的统计工具，包括响应面法、中心复合设计和Box-Behnken设计，对于结构化实验和以最小的实验努力识别局部最优仍然有价值；然而，它们的预测鲁棒性在高度非线性、多变量系统中减弱。相比之下，人工智能和机器学习方法，如人工神经网络、支持向量机、遗传算法、粒子群优化和非主导排序遗传算法II，可以实现精确的非线性建模、全局优化，并明确处理与产量、能耗、抑制剂形成和成本相关的冲突目标。特别强调的是新兴的混合框架，它集成了统计设计、基于人工智能的代理模型和元启发式优化，以提高预测保真度、流程效率和可扩展性。此外，在组学指导下的代谢工程、绿色溶剂预处理、木质素固化和数字孪生方面取得了进展，并结合了实时人工智能驱动的过程控制。

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引用次数: 0

Selectivity engineering with single-feed hybrid reactive distillation (RD) columns for a wider range of reaction networks - Part I : Elimination of complex hybrid RD configurations for two equilibrium reactions 选择性工程与单进料混合反应精馏（RD）塔的更广泛的反应网络-第一部分：消除复杂的混合RD配置为两个平衡反应

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2025-12-29 DOI: 10.1016/j.cep.2025.110687

Antarim Dutta, Md. Siraj Alam, Shabih Ul Hasan

This work introduces the first conceptual design framework for reactive distillation (RD) columns in the equilibrium reaction-extent space, enabling feasible designs with desired selectivity in two-equilibrium-reaction systems. Our previous work on selectivity engineering using hybrid RD configurations in the traditional mole-fraction space suffers from dimensionality constraints, and achieving desired selectivity is challenging in multireaction systems sensitive to component volatility. Existing algorithms for two-equilibrium-reaction systems require complex hybrid RD columns for more than three components and are typically limited to five. To address these challenges, we propose a novel conceptual design algorithm that enables the desired selectivity of intermediate products. Formulated in the equilibrium reaction-extent space, the methodology employs a combined graphical-simulation approach. The locus of equilibrium reaction extents along the RD column is determined for the desired selectivity, and its intersection with the locus of a single reactive stage RD-obtained by varying separation attributes-identifies feasible RD designs. Demonstrated via ethyl methyl carbonate production in both the design spaces, the method, currently applicable to two equilibrium reactions with intermediate-volatility reactants and single-feed hybrid RD columns; however, it can be extended to three equilibrium reactions and multi-feed configurations.

这项工作介绍了反应蒸馏（RD）塔在平衡反应范围空间的第一个概念设计框架，使可行的设计与期望的选择性在两平衡反应系统。我们之前在传统的摩尔分数空间中使用混合RD配置进行选择性工程的工作受到维度限制，并且在对组分挥发性敏感的多反应系统中实现所需的选择性是具有挑战性的。现有算法的两平衡反应系统需要复杂的混合RD列超过三个组分，通常限于五个。为了解决这些挑战，我们提出了一种新的概念设计算法，使中间产品的期望选择性。在平衡反应范围空间中制定，该方法采用组合图形模拟方法。沿着RD柱的平衡反应范围轨迹决定了期望的选择性，并且它与单个反应阶段RD轨迹的交集-通过不同的分离属性获得-确定可行的RD设计。通过在两个设计空间生产甲基碳酸乙酯，该方法目前适用于两个平衡反应与中间挥发性反应物和单进料混合RD塔；然而，它可以扩展到三个平衡反应和多进料构型。

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引用次数: 0

Experimental study on the characteristics of magnesium-based composite inhibitor inhibiting coal spontaneous combustion 镁基复合缓燃剂抑制煤自燃特性的实验研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-20 DOI: 10.1016/j.cep.2026.110715

Gang Bai , Shuoshuo Wang , Xueming Li , Ge Huang , Fengwei Dai , Xun Zhang

To address single inhibitors' drawbacks (low efficiency, short duration), this study compounds magnesium chloride hexahydrate with high-stability Mg(OH)₂, based on their stage-specific inhibition characteristics during coal oxidation, aiming to optimize inhibitors. Using contact angle tests, synchronous thermal analysis, in-situ infrared, and temperature-programmed oxidation, it explores the composite's effects on coal oxidation parameters/microgroups and its inhibition on coal spontaneous combustion.Results show inhibited coal has ∼30° lower contact angle (enhanced hydrophilicity, uniform particle size), higher characteristic temperature than raw coal, increased low-temperature oxidation heat absorption, less net heat release, and higher apparent activation energy across four oxidation stages. The optimal ratio is Mg(OH)₂:MgCl₂=1:1. The composite acts by reducing coal's active groups (hydroxyl, methyl/methylene, carbon-oxygen intermediates) and increasing stable ether bonds, it also lowers CO volume fraction and oxygen consumption, with inhibition rate always >40 %. Mechanistically, At low temperatures, MgCl₂'s strong water absorption forms a water film to isolate oxygen, and the decomposition product Mg²⁺ reacts with ROO• and Ar-OH to form a stable coordination compound with bidentate coordination bonds. Cl⁻ and ROO• undergo a single electron transfer reaction to quench ROO•; appropriate Mg(OH)₂ enhances MgCl₂'s water absorption. At high temperatures, Mg(OH)₂ thermally decomposes into a MgO protective layer and absorbs heat during decomposition.

针对单一抑制剂效率低、持续时间短的缺点，本研究基于六水氯化镁与高稳定性Mg(OH)2在煤氧化过程中的阶段特异性抑制特性，将其复合，以优化抑制剂。通过接触角测试、同步热分析、原位红外和程控温度氧化，探讨了复合材料对煤氧化参数/微团的影响及其对煤自燃的抑制作用。结果表明，与原煤相比，抑制煤的接触角降低~ 30°（亲水性增强，粒度均匀），特征温度更高，低温氧化吸热增加，净热释放减少，四个氧化阶段的表观活化能更高。最佳配比为Mg(OH)2:MgCl2=1:1。复合材料通过降低煤的活性基团（羟基、甲基/亚甲基、碳氧中间体）和增加稳定的醚键，降低CO体积分数和耗氧量，抑制率达40%。机制上，在低温下，MgCl2的强吸水性形成水膜隔离氧，分解产物Mg2+与ROO•和Ar-OH反应形成具有双齿配位键的稳定配位化合物。Cl−和ROO•发生单电子转移反应以淬灭ROO•；适量的Mg(OH)2提高了MgCl2的吸水率。在高温下，Mg(OH)2热分解成MgO保护层，并在分解过程中吸收热量。

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引用次数: 0

Study on the characteristics of phenol degradation by microwave radiation over NiO/BC catalyst NiO/BC催化剂微波辐射降解苯酚的特性研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-23 DOI: 10.1016/j.cep.2026.110720

JIANG Xi , PANG Yunji , ZHANG Tiejun

This study prepared a biochar-supported nickel oxide (NiO/BC) catalyst for the microwave-catalyzed degradation of gaseous phenol, aiming to investigate the degradation mechanism and pathway regulation. By optimizing preparation and reaction parameters, it was found that at a Ni loading of 6 wt% and a microwave power of 480 W, the gas-phase products accounted for 98.6% of the total products, with optimal selectivity for H₂ and CO in the syngas. Characterization results indicated that NiO was in-situ reduced to metallic Ni nanoparticles during the reaction, forming the key catalytically active centers that synergistically catalyzed cracking and hydrogenation reactions. This process primarily converted phenol into syngas (H₂ + CO) and long-chain alkanes (tetradecane). The study further revealed that excessively high microwave power caused the sintering of Ni particles, resulting in catalyst deactivation. This research elucidates the dynamic evolution of the catalyst under microwave irradiation and the directed conversion mechanism of phenol, providing a scientific basis for developing efficient and stable microwave-catalyzed technologies for the resource treatment of organic pollutants.

本研究制备了一种生物炭负载的氧化镍（NiO/BC）催化剂，用于微波催化降解气态苯酚，旨在探讨其降解机理和途径调控。通过对制备工艺和反应参数的优化，发现在Ni负载为6 wt%、微波功率为480 W时，气相产物占总产物的98.6%，对合成气中的H₂和CO具有最佳的选择性。表征结果表明，NiO在反应过程中被原位还原为金属镍纳米粒子，形成了关键的催化活性中心，协同催化裂化和加氢反应。该过程主要将苯酚转化为合成气（h2 + CO）和长链烷烃（十四烷）。研究进一步发现，过高的微波功率导致Ni颗粒烧结，导致催化剂失活。本研究阐明了微波辐照下催化剂的动态演化和苯酚的定向转化机理，为开发高效、稳定的微波催化有机污染物资源化处理技术提供了科学依据。

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引用次数: 0

Design, optimization and manufacturing of a novel microfluidic device for nano-andrographolide preparation 新型纳米穿心莲内酯制备微流控装置的设计、优化与制造

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-20 DOI: 10.1016/j.cep.2026.110718

Yimin Wei , Chen Gong , Su Wang , Xin Yuan , Yirong Feng , Ning Zhu , Wei He , Shuangfei Zhao

Precise management of particle size and distribution is crucial for nanomedicine performance. In this study, using the anti-cancer medicine andrographolide as a typical insoluble medicine, we present a systematic approach to the design, optimization, and manufacturing of a novel microfluidic device for high-throughput and size-tunable preparation of nanomedicines. By integrating Central Composite Rotatable Design (CCRD) with computational fluid dynamics (CFD), we designed and optimized a new microfluidic structure. The optimized structure demonstrated superior mixing efficiency and low pressure drop in water-water systems, achieving a higher performance index (PI) in oil-ethanol systems compared to existing microdevices. The microfluidic field device achieves size-tunable preparation of nano-andrographolide (about 7.9 nm), which is reduced to 1.4% of the traditional method. This innovative method has the potential to advance the field of nanomedicine manufacturing.

对颗粒大小和分布的精确管理对纳米药物的性能至关重要。在本研究中，我们以抗癌药物穿心莲内酯为典型的不溶性药物，系统地设计、优化和制造了一种新型的微流控装置，用于高通量和尺寸可调的纳米药物制备。将中心复合可旋转设计（CCRD）与计算流体力学（CFD）相结合，设计并优化了一种新型微流控结构。优化后的结构在水-水系统中表现出优异的混合效率和低的压降，与现有的微装置相比，在油-乙醇系统中实现了更高的性能指数（PI）。微流控场装置实现了纳米穿心莲内酯（约7.9 nm）的尺寸可调制备，将制备工艺降低到传统方法的1.4%。这种创新的方法有可能推动纳米药物制造领域的发展。

引用次数: 0

High-frequency ultrasound separation of crude-oil-in-water microemulsions 水包原油微乳的高频超声分离

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2025-12-24 DOI: 10.1016/j.cep.2025.110676

Carlos Mario Giraldo Atehortua , Agesinaldo Matos Silva Jr. , Luiz Octávio Vieira Pereira , José Henrique Lopes , Flávio Buiochi , Marcos Sales Guerra Tsuzuki

High-frequency ultrasound for separating crude-oil-in-water microemulsions-typical of oily wastewater from oil production—remains underexplored. We investigate 1 MHz standing-wave treatment using two resonant chambers (no-flow and flow), each with automatic resonance control. The acoustic radiation force promotes droplet migration, collisions, and coalescence, enhancing oil–water disengagement without chemical additives. Experiments varied input power and sonication time to assess separation performance for synthetic microemulsions with low oil content. In the no-flow regime,

70

% oil removal was achieved after 2 min at 40 W, versus 3.6% for a non-acoustic reference. In the flow regime (100 cm

^{3}

min⁻¹), 30 min at 80 W yielded nearly 66% removal, compared with 28% for the reference. These results demonstrate that MHz-range standing waves can deliver rapid, additive-free phase separation in compact equipment. The approach offers a promising complementary step for oily wastewater treatment, enabling reduced chemical demand, shortened residence times, and modular process integration.

用于分离水包原油微乳液的高频超声技术（石油生产中含油废水的典型特征）仍未得到充分开发。我们使用两个共振腔（无流和有流）研究1 MHz驻波处理，每个谐振腔都有自动谐振控制。声辐射力促进液滴迁移、碰撞和聚并，在没有化学添加剂的情况下增强油水分离。实验通过改变输入功率和超声时间来评价低含油量合成微乳的分离性能。在无流工况下，在40 W条件下，2分钟后除油率达到70%，而在无声学条件下，这一比例为3.6%。在流量（100 cm3 min - 1）下，80 W下30分钟的去除率接近66%，而参考值为28%。这些结果表明，mhz范围的驻波可以在紧凑型设备中实现快速、无添加剂的相分离。该方法为含油废水处理提供了一个有希望的补充步骤，可以减少化学品需求，缩短停留时间，并实现模块化过程集成。

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引用次数: 0

Synthesis and characterization of DC plasma-sputtered semiconductor oxide photoanodes to boost the photoelectro-Fenton removal of atrazine from sewage wastewater 直流等离子溅射半导体氧化物光阳极的合成与表征促进光电fenton去除污水中阿特拉津

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-30 DOI: 10.1016/j.cep.2026.110729

Ihsan H. Dakhil , Ammar S. Abbas

This study presents a novel approach for preparing photoanodes through plasma direct current sputtering (PDCS) of TiO₂ and ZnO semiconductor nanoparticles onto 304 L stainless-steel substrates. The synthesized photoanodes were comprehensively characterized using X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive spectroscopy, atomic force microscopy, diffuse reflectance spectroscopy, and photoluminescence spectroscopy, confirming distinct crystalline structures and formation of interfacial TiNi₃/ZnNi₃ phases. The photocatalytic performance was evaluated by measuring chemical oxygen demand (COD) reduction during atrazine degradation (10 mg.L⁻¹), a concentration similar to those found in sewage, using a photoelectro-Fenton reactor equipped with an air-diffused porous graphite cathode under varying illumination conditions (dark, fluorescent light, and UV irradiation). The synergistic combination of photocatalysis, electrochemical oxidation, and Fenton chemistry demonstrated enhanced pollutant removal efficiency. Statistical analysis confirmed a significant performance enhancement between unmodified SS and prepared photoanodes. After 360 min at pH 3, the ZnO-deposited photoanode achieved superior performance, degrading 70.3% of atrazine under UV illumination, significantly outperforming the TiO₂-deposited photoanode. Kinetic analysis revealed that the degradation process followed a second-order kinetic model. Ten-cycle reusability studies confirmed excellent practical durability, with 88.9% for the ZnO/SS photoanode. These findings demonstrate that PDCS represents an effective technology for producing high-performance photoanodes with enhanced stability and reusability for the degradation of persistent organic pollutants in environmental remediation applications.

本研究提出了一种利用等离子体直流溅射（PDCS）在304 L不锈钢衬底上制备TiO2和ZnO半导体纳米粒子光阳极的新方法。利用x射线衍射、场发射扫描电镜、能量色散光谱、原子力显微镜、漫反射光谱和光致发光光谱对合成的光阳极进行了全面表征，证实了不同的晶体结构和界面TiNi3/ZnNi3相的形成。通过测定阿特拉津（10 mg）降解过程中化学需氧量（COD）的减少量来评价其光催化性能。L−1)，与污水中发现的浓度相似，使用配备空气扩散多孔石墨阴极的光电芬顿反应器，在不同的照明条件下（黑暗，荧光灯和紫外线照射）。光催化、电化学氧化和Fenton化学的协同作用增强了污染物的去除效率。统计分析证实，未经改性的SS与制备的光阳极相比，性能有显著提高。在pH值为3的条件下，经过360 min后，zno沉积的光阳极获得了优异的性能，在紫外光照下，zno沉积的光阳极降解了70.3%的阿特拉津，明显优于tio2沉积的光阳极。动力学分析表明，降解过程符合二级动力学模型。十循环重复使用性研究证实了ZnO/SS光阳极具有出色的实际耐用性，其耐用性为88.9%。这些发现表明，PDCS是一种生产高性能光阳极的有效技术，具有更高的稳定性和可重复使用性，可用于环境修复应用中持久性有机污染物的降解。

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引用次数: 0

Dependence of flow pattern on column scale in bubble columns with internals 带内部气泡柱中流态与柱尺度的关系

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.cep.2026.110716

Nan Zhang , Xiaoping Guan , Kangjun Wang , Ning Yang

Scale-up effects on the hydrodynamics in bubble columns are particularly critical for reactor design and optimization. However, unlike empty bubble columns, there remains a lack of comprehensive understanding of scale-up effects in the presence of vertical internals. To address the gap, this study investigated the effects of column scale on gas holdup, flow field and turbulence properties in the bubble columns with tube bundle internals at superficial gas velocity 0.12 m/s through CFD simulation. The predictions indicated that, the radial distribution of gas holdup becomes more uniform with scale-up. Moreover, as the column scale increases, the flow pattern in the empty columns consistently exhibits typical gulf-stream pattern. However, for the bubble columns with internals, the flow pattern shifts from the gulf-stream to a dual-circulation pattern with the flow reversal in the center. The effects of column scale on the turbulence properties are also completely different for the empty column and the column with internals. Mechanism analysis demonstrated that the gas holdup distribution governs the large-scale liquid circulation pattern, while turbulence viscosity plays a pivotal role in regulating circulation intensity. We believe that these findings could provide more insight for the design and scale-up of bubble column reactors with internals.

气泡塔流体动力学的放大效应对反应器的设计和优化尤为重要。然而，与空泡柱不同的是，在垂直内部存在的情况下，仍然缺乏对放大效应的全面理解。为了解决这一空白，本研究通过CFD模拟研究了在表面气速0.12 m/s时，柱垢对带有管束内壁的气泡塔的气含率、流场和湍流特性的影响。预测结果表明，气含率的径向分布随着比例的增大而趋于均匀。此外，随着柱尺度的增大，空柱内的流型始终表现为典型的湾流流型。而对于带内腔的气泡柱，流型由湾流转变为双循环流，中心发生回流。空柱和带内柱的柱标度对湍流特性的影响也完全不同。机理分析表明，气含率分布决定了大尺度液体循环模式，而湍流粘度对循环强度的调节起关键作用。我们相信这些发现可以为内部鼓泡塔反应器的设计和放大提供更多的见解。

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引用次数: 0

Process intensification through furfural purification and reactive distillation in the furan based pathway to sustainable aviation fuel 呋喃基可持续航空燃料提纯和反应蒸馏过程强化研究

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification

Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.cep.2026.110711

Gabriel Contreras-Zarazúa

In recent years, the aviation industry has intensified its efforts to reduce CO₂ emissions, and one of the most promising routes to produce sustainable aviation fuel is the furan route, in which the furfural purification and aldol condensation stages are crucial for the process efficiency. In this work, different process alternatives for both stages were studied, including azeotropic distillation and liquid-liquid extraction processes for the furfural purification stage, while reactive distillation alternatives are explored for the aldol condensation stage. The design considers the evaluation of sustainability indicators such as Total Annual Cost (TAC), Eco-Indicator 99, CO₂ emissions, and individual risk. The results indicate that azeotropic distillation is the most efficient and cost-effective alternative, with a TAC 50% lower and 3% less CO₂ emissions than the LLE options. Additionally, methanol recovery, which is a byproduct of the purification stage, generates revenue that covers nearly 100% of operational costs, significantly improving economic sustainability. Finally, in the aldol condensation stage, conventional reaction–separation processes were compared with intensified configurations such as reactive distillation and thermally coupled reactive distillation. The latter showed the best performance, reducing utility costs by 60%, emissions by 66%, and individual risk by 40%, despite an 18% higher investment cost.

近年来，航空业加大了减少二氧化碳排放的力度，其中最有希望生产可持续航空燃料的路线之一是呋喃路线，其中糠醛净化和醛醇缩合阶段对工艺效率至关重要。在这项工作中，研究了这两个阶段的不同工艺选择，包括糠醛净化阶段的共沸蒸馏和液液萃取工艺，而醛醇缩合阶段则探索了反应蒸馏的选择。该设计考虑了年度总成本（TAC）、生态指标99、二氧化碳排放量和个人风险等可持续性指标的评估。结果表明，共沸蒸馏是最有效和最具成本效益的替代方案，TAC比LLE方案低50%，CO₂排放量减少3%。此外，甲醇回收作为净化阶段的副产品，产生的收入几乎可以覆盖运营成本的100%，显著提高了经济的可持续性。最后，在醛醇缩合阶段，将常规反应分离过程与强化反应精馏和热耦合反应精馏进行了比较。后者表现最好，尽管投资成本高出18%，但其公用事业成本降低了60%，排放量降低了66%，个人风险降低了40%。

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引用次数: 0