Fuel Processing Technology最新文献_第3页

A green alternative: Engine performance and emission effect analysis of linalool-derived biodiesel with B₄C nanoparticles for sustainable fuel solutions 绿色替代方案：用B₄C纳米颗粒作为可持续燃料解决方案的芳樟醇衍生生物柴油的发动机性能和排放效果分析

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-13 DOI: 10.1016/j.fuproc.2026.108401

Süleyman Şimşek , Koray Güler

This study represents the first investigation in the literature to employ linalool as a biodiesel feedstock and to examine the effects of B₄C nanoparticles as an additive in linalool-based biodiesel blends. The experiments were conducted using a direct injection, four-stroke, air-cooled, single-cylinder diesel engine. In tests performed with biodiesel produced from linalool, the optimum fuel blend was identified as BDL30. To this blend, B₄C nanoparticles were added at concentrations of 25, 50, 75, and 100 ppm to prepare different mixtures; the effects of these sterilized blends on combustion, emissions, and engine performance were evaluated. Compared to diesel fuel, BTE increased by 4.69%, while CO, HC, and smoke emissions decreased by 45.99%, 25.75%, and 23.83%, respectively. Additionally, BSFC was reduced by 10.18%, whereas NOₓ and CO₂ emissions increased by 23.4% and 21.54%, respectively. The results indicated that the BDL30–75 ppm blend delivered the best performance in terms of both emission reduction and overall efficiency. This study provides findings that contribute to the advancement of renewable energy sources, the adoption of clean production technologies, the mitigation of climate change, and the achievement of sustainable development goals.

本研究是文献中首次将芳樟醇作为生物柴油的原料，并研究了硫酸钡纳米颗粒作为添加剂在芳樟醇基生物柴油混合物中的作用。实验是用一台直接喷射、四冲程、气冷、单缸柴油发动机进行的。在用芳樟醇生产的生物柴油进行的试验中，最佳燃料混合物被确定为BDL30。在此混合物中，加入浓度为25、50、75和100 ppm的硫酸钡纳米粒子制备不同的混合物；评估了这些灭菌混合物对燃烧、排放和发动机性能的影响。与柴油相比，BTE增加了4.69%，CO、HC和烟雾排放量分别下降了45.99%、25.75%和23.83%。此外，BSFC减少了10.18%，而NOₓ和CO₂排放量分别增加了23.4%和21.54%。结果表明，bdl30 - 75ppm混合燃料在减排和综合效率方面表现最佳。本研究提供了有助于推进可再生能源、采用清洁生产技术、减缓气候变化和实现可持续发展目标的研究结果。

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引用次数: 0

The preparation of hierarchical ZSM-48 zeolite-supported bifunctional catalysts for n-hexadecane hydroisomerization 正十六烷加氢异构双功能催化剂ZSM-48的制备

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.fuproc.2025.108393

Min Xu, Kegui Su, Huiyan Li, Shuxiang Xiong, Qian Zhao, Wei Wang, Wei Wu

Hydroisomerization plays a significant role in improving the low-temperature fluidity of diesel fuel, producing gasoline with a high-octane number, and lowering the pour point of lubricating oil. Therefore, the development of hydroisomerization catalysts is crucial. Herein, two steps are utilized to this end for synthesizing a hierarchical ZSM-48 zeolite (Z48–0.2CA) continuously: the growth modifier cetyltrimethylammonium bromide (CTAB) is utilized first to limit the growth of ZSM-48 crystals and introduce rich intercrystalline mesopores. Then, the nano-ZSM-48 crystals are treated with citric acid to form intracrystalline mesopores. Furthermore, the acidity of the synthesized Z48–0.2CA is effectively reduced. The test of the catalytic performance of n-hexadecane hydroisomerization over the Pd-loaded Pd/Z48-CA bifunctional catalysts demonstrates that the Pd/Z48–0.2CA catalysts prepared with a CTAB/Al mole ratio of 0.2 and treated with citric acid has the highest iso‐hexadecane yield of 68.8 %, which is 12.0 % greater at lower reaction temperature in contrast to the conventional microporous Pd/Z48 catalyst because of the improved diffusion of hydrocarbons in the channel of the zeolite and the increased C_Pd/C_H+ value. Therefore, the use of a growth modifier and acid treatment for the synthesis of hierarchical zeolite effectively enhances the catalytic performance of bifunctional catalysts.

加氢异构化对提高柴油低温流动性、生产高辛烷值汽油和降低润滑油的倾点具有重要作用。因此，开发加氢异构化催化剂至关重要。本文通过两个步骤连续合成了分级ZSM-48分子筛（Z48-0.2CA）：首先利用生长调节剂十六烷基三甲基溴化铵（CTAB）限制ZSM-48晶体的生长，引入丰富的晶间介孔。然后，用柠檬酸处理纳米zsm -48晶体，形成晶内介孔。此外，合成的Z48-0.2CA的酸度也得到了有效降低。负载Pd的Pd/Z48-CA双功能催化剂催化正十六烷加氢异构化的性能测试表明，CTAB/Al摩尔比为0.2、柠檬酸处理的Pd/ Z48-0.2CA催化剂的异十六烷收率最高，达到68.8%；在较低的反应温度下，与传统的微孔Pd/Z48催化剂相比，CPd/CH+值提高了12.0%，这是由于沸石通道中碳氢化合物的扩散得到改善，CPd/CH+值提高。因此，采用生长调节剂和酸处理合成分级沸石有效地提高了双功能催化剂的催化性能。

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引用次数: 0

Catalytic pyrolysis of saturated hydrocarbon plastics over fluorinated gamma-alumina towards the production of liquid fuels 饱和烃塑料在氟化γ -氧化铝上的催化热解制备液体燃料

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.fuproc.2026.108398

Raiana Tomazini , Henrik Gulyás , Francesc Medina

Plastic pollution has escalated into a dire threat to the environment, prompting an urgent need for improved plastic waste management. Pyrolysis is among the fastest-developing technologies for converting certain waste plastics into fuels and chemicals. In this work, we studied fluorinated γ-alumina as a catalyst for the two plastics with the highest global production volumes: high-density polyethylene (HDPE) and polypropylene (PP). Catalysts with varying fluorine loadings (0, 2, 4, 8, and 20 wt%) were readily prepared by partial fluorination of γ-alumina with aqueous NH₄F. Pyrolysis experiments were conducted in a stainless-steel batch reactor at 420 °C for HDPE and 370 °C for PP. The resulting crude pyrolysis oils were separated by distillation into two distillate fractions (bp. RT–200 °C and 200–300 °C), and the bottom product. Compared to thermal pyrolysis, catalytic pyrolysis promoted more extensive fragmentation and significantly increased volatile yields (gases and distillates), reaching 84% for HDPE and over 90% for PP. It also reduced the minimum temperatures required to obtain fully liquid crude pyrolysis oils, from 420 °C to 380 °C for HDPE and from 370 °C to 340 °C for PP.

塑料污染已经升级为对环境的严重威胁，迫切需要改善塑料废物管理。热解是将某些废塑料转化为燃料和化学品的发展最快的技术之一。在这项工作中，我们研究了氟化γ-氧化铝作为全球产量最高的两种塑料的催化剂：高密度聚乙烯（HDPE）和聚丙烯（PP）。不同氟负载（0、2、4、8和20 wt%）的催化剂很容易通过用NH₄F水溶液部分氟化γ-氧化铝制备。在不锈钢间歇式反应器中对HDPE和PP分别在420°C和370°C条件下进行热解实验，得到的粗热解油经精馏分离为两个馏分(bp；RT-200℃和200-300℃)，以及底部产品。与热热解相比，催化热解促进了更广泛的裂解，显著提高了挥发物收率（气体和馏分），HDPE达到84%，PP超过90%。它还降低了获得全液态粗热解油所需的最低温度，HDPE从420℃降至380℃，PP从370℃降至340℃。

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引用次数: 0

A novel crude oil classification approach based on average carbon number determination and case studies 基于平均碳数测定的原油分类新方法及实例研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-20 DOI: 10.1016/j.fuproc.2026.108400

Renbao Zhao , Yuan Yuan , Jintang He , Wenjun Lu , Jiaying Wang , Guanghui Zhou , Jirui Zou , Shanhu Liu

Traditional crude oil classification based on American Petroleum Institute gravity (API) and saturates, aromatics, resins, and asphaltenes (SARA) content variation would encounter serious limitation during the heavy oil development. In this study, the average carbon number (ACN) is proposed for the first time as a quantitative parameter to establish a novel and efficient method for crude oil classification, which shows a closer correlation to the viscosity variation of crude oil in the Tahe oilfield. The ACN is determined according to the total mole amount of CO_x (CO + CO₂) emissions during the ramped temperature oxidation (RTO) process, where a constant heating rate is used in conducting the kinetic cell (KC) experiments. The results show that the most effective heavy oil dilution process occurs when the ACN difference lies within the range of 6–14 under the investigated conditions. Pilot tests conducted in the Tahe oilfield confirm that the regular of screening light hydrocarbon with maintaining this range significantly enhances downhole dilution efficiency while reducing diluent consumption. ACN obtained from KC experiment is a more accurate and promising method for determining the carbon number, especially for heavy oil. This classification method could be used as a quantitative and effective solution for optimizing viscosity prediction and diluent selection in the heavy oil up and downstream industry.

在稠油开发过程中，基于美国石油学会重力（API）和饱和烃、芳烃、树脂和沥青质（SARA）含量变化的传统原油分类将受到严重限制。本文首次提出平均碳数（ACN）作为原油分类的定量参数，建立了一种新颖有效的原油分类方法，该方法与塔河油田原油粘度变化的相关性更强。ACN是根据升温氧化（RTO）过程中COx （CO + CO₂）排放的总摩尔量确定的，其中在进行动力学电池（KC）实验时使用恒定的加热速率。结果表明：在实验条件下，当ACN差值在6 ~ 14范围内时，稠油稀释效果最好；在塔河油田进行的先导试验证实，在保持这一范围的情况下，筛选轻烃的规律显著提高了井下稀释效率，同时降低了稀释剂的消耗。通过KC实验得到的ACN是测定稠油碳数的一种较为准确和有前途的方法。该分类方法可作为稠油上下游行业粘度预测和稀释剂选择优化的定量有效解决方案。

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引用次数: 0

Experimental study on the vaporization and condensation of alkali metal chlorides in biomass ash under pressurized conditions 加压条件下碱金属氯化物在生物质灰中汽化缩聚的实验研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.fuproc.2026.108403

Tao Yang , Wuyang Xiao , Lijuan Chen , Bo Wei , Yanjie Qi , Shuanglong Li , Jianjiang Wang , Shan Wang , Xian Li , Hong Yao

The aim of this work was to understand the vaporization and condensation of alkali chlorides in biomass ash under elevated pressure, a series of experiments have been conducted on a horizontal high-pressure tube furnace. Stainless steel sheets were located in the tube furnace to condense inorganic species. Scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), X-ray diffraction (XRD), X-ray fluorescence (XRF), and ImageJ software were employed to characterize and analyze the condensates and solid refractory residues. The results demonstrated that at 4.0 MPa, the relative change rates(

λ

) of K₂O and Cl in the solid residues reached 20.89% and 726.44%, respectively. Elevated pressure inhibited the vaporization of alkali metal chlorides in biomass ash, and high pressure further promoted the formation of mullite (Al_2.4Si_0.6O_4.8) and potassium calcium phosphate (KCaPO₄) in the solid residues. The condensates formed under different pressures were mainly white, square or spherical KCl and NaCl particles; when the pressure increased from 0.1 MPa to 2.0 MPa, the particle size of the condensates decreased to 18.8% of the initial value. In conclusion, pressure exerted a crucial regulatory effect on the vaporization and condensation processes of gaseous chlorides throughout the entire thermal conversion process.

为了了解生物质灰中碱氯化物在高压下的汽化和冷凝过程，在卧式高压管式炉上进行了一系列的实验研究。不锈钢片被放置在管式炉中以凝结无机物。采用扫描电镜-能谱仪（SEM-EDS）、x射线衍射仪（XRD）、x射线荧光仪（XRF）和ImageJ软件对凝析物和固体难熔渣进行表征和分析。结果表明，在4.0 MPa下，固体残渣中K2O和Cl的相对变化率λ分别达到20.89%和726.44%。高压抑制了生物质灰分中碱金属氯化物的汽化，高压进一步促进了固体残渣中莫来石（Al2.4Si0.6O4.8）和磷酸钙钾（KCaPO4）的形成。不同压力下形成的凝析物主要为白色、方形或球形KCl和NaCl颗粒；当压力从0.1 MPa增加到2.0 MPa时，凝析油的粒径减小到初始值的18.8%。综上所述，在整个热转化过程中，压力对气态氯化物的蒸发和冷凝过程起着至关重要的调节作用。

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引用次数: 0

Energy consumption simulation and diagnosis in the sintering process: A mechanism and data-driven approach 烧结过程能耗模拟与诊断：一种机制与数据驱动的方法

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.fuproc.2025.108391

Ganggang Luo , Qi Zhang , Lu Dong , Huimin Liu , Shuaijie Yu , Hongyun Hu , Hong Yao

The steel industry is a pillar of China's national economy, with energy consumption accounting for more than 10 % of the national total. As a key stage in steel production, the sintering process contributes about 8 % of total energy use. Under the dual carbon goals, improving energy efficiency in sintering has become an urgent challenge. However, existing prediction models often exhibit errors exceeding 10 %, limiting energy-saving research. To address this issue, this study develops a sintering energy consumption model using one year of continuous production data from a steel plant, combining mechanism analysis with a genetic algorithm–optimized long short-term memory network (GA-LSTM). The model achieved a prediction error below 5 % over 30 consecutive days. In addition, an energy diagnostic framework based on the analytic hierarchy process was proposed, analyzing influencing factors across three levels: “energy consumption–energy carriers–operational parameters.” Results show that solid fuel is the dominant energy carrier, contributing 73.36 %, while parameters such as sinter basicity strongly affect fuel use. Proper adjustment can reduce solid fuel consumption by 2.6 kg/t. Considering process stability and parameter coupling, two optimization strategies—uncorrected and corrected—were proposed, reducing energy consumption by 1.85 kgce/t and 1.25 kgce/t, respectively.

钢铁行业是中国国民经济的支柱产业，能源消耗占全国总量的10%以上。烧结是钢铁生产的关键环节，其能耗约占总能耗的8%。在双碳目标下，提高烧结能源效率已成为迫切的挑战。然而，现有的预测模型往往误差超过10%，限制了节能研究。为了解决这一问题，本研究利用某钢厂一年的连续生产数据，将机制分析与遗传算法优化的长短期记忆网络（GA-LSTM）相结合，建立了烧结能耗模型。该模型在连续30天内的预测误差低于5%。此外，提出了基于层次分析法的能源诊断框架，从“能源消耗-能源载体-运行参数”三个层面分析影响因素。结果表明，固体燃料是主要的能量载体，贡献了73.36%，而烧结碱度等参数对燃料的使用影响较大。适当调整可减少2.6 kg/t的固体燃料消耗。考虑工艺稳定性和参数耦合，提出了未校正和校正两种优化策略，能耗分别降低1.85 kgce/t和1.25 kgce/t。

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引用次数: 0

Catalysts and process conditions in DME production via CO2 hydrogenation: A review 二氧化碳加氢生产二甲醚的催化剂及工艺条件综述

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.fuproc.2025.108388

Zeineb Thiehmed , Rim Ismail , Takwa Omar , Ahmed Sodiq , Odi Fawwaz Alrebei , Tareq Al-Ansari , Abdulkarem I. Amhamed

The reliance on fossil fuels for energy production poses significant environmental challenges, necessitating the need for sustainable energy alternatives. Dimethyl ether (DME), with its non-toxic and biodegradable properties, has emerged as a promising substitute to conventional fuels, offering advantages over both liquefied petroleum gas (LPG) and diesel fuel. This review highlights recent developments in DME synthesis pathways, focusing on direct and indirect CO₂ hydrogenation routes. Particular attention is given to innovative bifunctional catalyst developments that integrate methanol synthesis and dehydration capabilities in a single system. The study systematically evaluates catalyst design challenges, specifically addressing metal-acid functionality optimization and long-term stability considerations. Through detailed examination of operating parameters—temperature, pressure, and space velocity—we identify critical DME process intensification opportunities for researchers in the field for further development.

能源生产对化石燃料的依赖构成了重大的环境挑战，因此需要可持续的替代能源。二甲醚（DME）具有无毒和可生物降解的特性，已成为传统燃料的有希望的替代品，比液化石油气（LPG）和柴油燃料都有优势。本文综述了二甲醚合成途径的最新进展，重点介绍了直接和间接CO2加氢途径。特别关注创新的双功能催化剂的发展，整合甲醇合成和脱水能力在一个单一的系统。该研究系统地评估了催化剂设计挑战，特别是解决了金属酸功能优化和长期稳定性问题。通过对操作参数（温度、压力和空速）的详细检查，我们为该领域的研究人员确定了关键的二甲醚过程强化机会，以便进一步发展。

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引用次数: 0

Contrasting morphology and oxidation kinetics in forward and reverse smolder-derived chars from pine needles 对比松针正、反向阴烧炭的形态和氧化动力学

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-03-01 Epub Date: 2025-12-19 DOI: 10.1016/j.fuproc.2025.108382

Jiuling Yang , Lei Yang , Jiepei Xu , Jie Zhang , Shiqi Wu , Haoyang Qin

Smoldering is categorized into forward and reverse modes, propagating with or against the wind orientation. The inherent structural heterogeneity and complex smoldering dynamics of forest residues have left their bioenergy potential underexplored under contrasting airflows. This study combined multi-scale characterization (μ-CT, SEM, Micro-FTIR, Raman spectroscopy, and coupled TG-FTIR-MS) to reveal the distinct physicochemical properties of pine needles (PN) and its smolder-derived chars. The results revealed that PN features a multiscale pore structure across its inter- and intra-particle regions, as characterized by μ-CT and SEM, respectively. The char produced by forward smoldering (FSC) exhibited denser and thicker-walled pores (5–20 μm), whereas the char produced by reverse smoldering (RSC) retained loose and thinner-walled pores (>20 μm). The thermal stability of RSC was reduced due to its less-ordered carbon structure, as evidenced by the Micro-FTIR and Raman analysis. At 200–400 °C, RSC exhibited higher activation energy than FSC (135.98 vs. 92.10 kJ/mol), indicating its greater resistance to initial oxidation. However, RSC's activation energy became lower (101.89 vs. 113.66 kJ/mol) at 400–500 °C, reflecting the enhanced reactivity of the secondary char oxidation. These findings pave the way for tailoring smoldering conditions (e.g., wind orientation and temperature) to convert forest residues into chars with desired reactivity for bioenergy applications.

阴燃分为正向和反向两种模式，随风向或逆风向传播。森林残留物固有的结构异质性和复杂的阴燃动力学使其在不同气流下的生物能源潜力未得到充分开发。本研究结合多尺度表征（μ-CT、SEM、Micro-FTIR、Raman光谱和耦合TG-FTIR-MS）揭示了松针（PN）及其阴烧衍生炭的独特理化性质。结果表明，通过μ-CT和SEM分别表征了PN在颗粒间和颗粒内具有多尺度孔隙结构。正向阴燃（FSC）制得的炭具有致密且壁厚的孔隙（5 ~ 20 μm），而反向阴燃（RSC）制得的炭具有松散且壁薄的孔隙（20 μm）。显微ftir和拉曼光谱分析表明，RSC的碳结构不有序，导致其热稳定性降低。在200 ~ 400℃时，RSC比FSC表现出更高的活化能（135.98 kJ/mol比92.10 kJ/mol），表明RSC具有更强的抗初始氧化能力。400 ~ 500℃时，RSC的活化能降低（101.89比113.66 kJ/mol），反应活性增强。这些发现为调整阴燃条件（例如，风向和温度）铺平了道路，从而将森林残留物转化为具有所需反应性的木炭，用于生物能源应用。

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引用次数: 0

Synthesis, characterization, and performance of a novel static dissipative additive for refined oils via quaternary ammonium segment modification 一种新型季铵段改性成品油静态耗散添加剂的合成、表征及性能研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-03-01 Epub Date: 2025-12-08 DOI: 10.1016/j.fuproc.2025.108381

Kunyu Li, Zhanpeng Lu, Tiantian Zhang, Zuo Wang, Zhijie Wang, Zhengsheng Ma

Refined oils, such as gasoline, diesel, and aviation kerosene, are primarily composed of hydrocarbon compounds. As poor electrical conductors, these oils accumulate static charges through friction during storage, transportation, and handling. When charge accumulation exceeds a critical threshold, electrostatic discharge phenomenon will occur, posing significant fire and explosion risks. The incorporation of static dissipative additives into oil products is an effective method for preventing and mitigating electrostatic hazards. In this study, polymer segment modification technology was employed to introduce hydrophobic higher alkyl acrylate segments into the unsaturated CC of the quaternary ammonium salt monomer methylacryloyloxyethyl trimethylammonium chloride. This approach led to the initial synthesis of a novel hydrophobic polyquaternary ammonium compound that retained the antistatic properties inherent to quaternary ammonium groups while achieving compatibility with oil matrices. The structure and morphology of the polymeric product were characterized using instrumental analysis techniques, confirming its successful synthesis. Further evaluation demonstrated the efficacy of the product in enhancing the conductivity of refined oils. The oil conductivity increased to 1005 pS/m at an addition level of 2 ppm. The synthesized polymer shows promise as a novel static dissipative additive for refined oils and offers new guidance for advancing polymer segment modification technology.

精制油，如汽油、柴油和航空煤油，主要由碳氢化合物组成。作为不良的导电体，这些油在储存、运输和处理过程中通过摩擦积累静电荷。当电荷积累超过临界阈值时，会产生静电放电现象，具有重大的火灾和爆炸危险。在油品中加入静电耗散添加剂是预防和减轻静电危害的有效方法。本研究采用聚合物段改性技术，在季铵盐单体甲基丙烯酰氧乙基三甲基氯化铵的不饱和CC中引入疏水高烷基丙烯酸酯段。这种方法初步合成了一种新型疏水多季铵化合物，该化合物保留了季铵基团固有的抗静电性能，同时实现了与油基质的相容性。用仪器分析技术对产物的结构和形态进行了表征，证实了产物的成功合成。进一步的评价证明了该产品在提高成品油导电性方面的功效。当添加量为2 ppm时，油的导电性提高到1005 pS/m。合成的聚合物有望作为一种新型的静耗散添加剂用于成品油，并为推进聚合物段改性技术提供了新的指导。

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引用次数: 0

Performance study of diesel/hydrogen-rich gas engine based on methanol decomposing and waste heat recovery 基于甲醇分解和余热回收的柴油/富氢燃气发动机性能研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.fuproc.2025.108387

Beidong Zhang , Yankun Jiang , Weihong Xu , Mingrui Chen , Yexin Chen

Dissociated methanol gas (DMG) is a hydrogen-rich mixture produced from methanol using engine exhaust heat. In this study, a diesel/DMG dual-fuel engine was developed to investigate the effects of DMG blending on performance under typical operating conditions and to explore the potential of exhaust-heat-driven methanol decomposition for improving efficiency and reducing fuel cost. DMG generated in a methanol decomposition reactor was introduced into the cylinder to co-combust with diesel. Results show that at a 20 % substitution ratio, the engine's thermal efficiency increased by (1.08 ± 0.08)% and fuel costs decreased by (10.47 ± 0.25)%. The improvement was statistically significant (p < 0.05). DMG addition led to higher peak cylinder pressure, pressure rise rate, and heat release rate, along with advanced combustion phasing, a shorter combustion duration, and slightly increased cycle-to-cycle variation. Regarding emissions, NOx increased with higher substitution ratios, while soot exhibited a slight rise. HC emissions first decreased and then increased marginally, whereas CO emissions showed a small increase. Blending DMG with diesel not only recycles exhaust heat but also modifies combustion characteristics, improving engine efficiency and lowering operational costs. This method presents a competitive and promising pathway for the efficient utilization of future clean energy.

解离甲醇气体（DMG）是一种由甲醇利用发动机尾气产生的富氢混合物。在本研究中，开发了一台柴油/DMG双燃料发动机，以研究DMG混合对典型工况下性能的影响，并探索废热驱动的甲醇分解在提高效率和降低燃料成本方面的潜力。将甲醇分解反应器生成的DMG引入汽缸与柴油共燃。结果表明，当替代率为20%时，发动机热效率提高（1.08±0.08）%，燃油成本降低（10.47±0.25）%。改善有统计学意义（p < 0.05）。DMG的加入导致了更高的峰值气缸压力、压力上升率和热释放率，同时燃烧阶段提前，燃烧持续时间缩短，循环间变化略有增加。在排放量方面，随着替代率的增加，NOx增加，而烟尘略有增加。HC排放量先减少后略有增加，而CO排放量则略有增加。将DMG与柴油混合不仅可以回收废气热量，还可以改变燃烧特性，提高发动机效率并降低运行成本。该方法为未来清洁能源的高效利用提供了一条具有竞争力和前景的途径。

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引用次数: 0