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Multi-Physics Coupled Acoustic-Mechanics Analysis and Synergetic Optimization for a Twin-Fluid Atomization Nozzle

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Chinese Journal of Mechanical Engineering 2024年第3期37卷 204-223页

作者： wenying li Yanying li Yingjie Lu Jinhuan Xu Bo Chen li Zhang Yanbiao li College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Northwestern Polytechnical UniversityXian 710072China Guizhou Anda Aviation Forging Co. Ltd.Anshun 561005China

Fine particulate matter produced during the rapid industrialization over the past decades can cause significant harm to human ***-fluid atomization technology is an effective means of controlling fine particulate matter *** this paper,the influences of the main parameters on the droplet size,effective atomization range and sound pressure level(SPL)of a twin-fluid nozzle(TFN)are investigated,and in order to improve the atomization performance,a multi-objective synergetic optimization algorithm is presented.A multi-physics coupled acousticmechanics model based on the discrete phase model(DPM),large eddy simulation(LES)model,and Ffowcs Williams-Hawkings(FW-H)model is established,and the numerical simulation results of the multi-physics coupled acoustic-mechanics method are verified via experimental *** on the analysis of the multi-physics coupled acoustic-mechanics numerical simulation results,the effects of the water flow on the characteristics of the atomization flow distribution were obtained.A multi-physics coupled acoustic-mechanics numerical simulation result was employed to establish an orthogonal test database,and a multi-objective synergetic optimization algorithm was adopted to optimize the key parameters of the *** optimal parameters are as follows:A gas flow of 0.94 m^(3)/h,water flow of 0.0237 m^(3)/h,orifice diameter of the self-excited vibrating cavity(SVC)of 1.19 mm,SVC orifice depth of 0.53 mm,distance between SVC and the outlet of nozzle of 5.11 mm,and a nozzle outlet diameter of 3.15 *** droplet particle size in the atomization flow field was significantly reduced,the spray distance improved by 71.56%,and the SPL data at each corresponding measurement point decreased by an average of 38.96%.The conclusions of this study offer a references for future TFN research.

关键词： Twin-fluid nozzle BP neural network Multi-objective optimization Multi-physics coupled Acousticmechanics analysis Genetic algorithm

Theoretical analysis of hydrogen solubility in direct coal liquefaction solvents

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International Journal of Coal Science & Technology 2024年第2期11卷 187-197页

作者： Xiaobin Zhang Aoqi Wang Xingbao Wang wenying li State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024ShanxiChina College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China

The cyclic hydrogenation technology in a direct coal liquefaction process relies on the dissolved hydrogen of the solvent or oil participating in the hydrogenation ***,a theoretical basis for process optimization and reactor design can be established by analyzing the solubility of hydrogen in liquefaction *** studies of hydrogen solubility in liquefaction solvents are challenging due to harsh reaction conditions and complex solvent *** this study,the composition and content of liquefied solvents were *** model compounds,hexadecane,toluene,naphthalene,tetrahydronaphthalene,and phenanthrene were chosen to represent the liquefied solvents in chain alkanes and monocyclic,bicyclic,and tricyclic aromatic *** solubility of hydrogen X(mol/mol)in pure solvent components and mixed solvents(alkanes and aromatics mixed in proportion to the chain alkanes+bicyclic aromatic hydrocarbons,bicyclic saturated aromatic hydrocarbons+bicyclic aromatic hydrocarbons,and bicyclic aromatic hydrocarbons+compounds containing het-eroatoms composed of mixed components)are determined using Aspen simulation at temperature and pressure conditions of 373–523 K and 2–10 *** results demonstrated that at high temperatures and pressures,the solubility of hydrogen in the solvent increases with the increase in temperature and pressure,with the pressure having a greater ***-more,the results revealed that hydrogen is more soluble in straight-chain alkanes than in other solvents,and the solubility of eicosanoids reaches a maximum of *** hydrogen solubility in aromatic ring compounds decreased gradually with an increase in the aromatic ring *** influence of chain alkanes on the solubility of hydrogen predominates in a mixture of solvents with different mixing ratios of chain alkanes and aromatic *** solubility of hydrogen in mixed aromatic solvents is less than that in the corresponding single ***

关键词： Direct coal liquefaction liquefaction solvents Process simulation Hydrogen solubility

Optimizing extractants selection for efficient separation of phenols and nitrogen-containing heteroaromatics using hydrogen bond interaction strategies

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Chinese Journal of Chemical Engineering 2024年第4期68卷 43-52页

作者： Pengzhi Bei Rui Zhang Jie Feng Antony Rajendran wenying li State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China Department of Chemistry Mepco Schlenk Engineering College(Autonomous)Sivakasi 626005India

Focusing on the use of imidazolium ionic liquids and quaternary ammonium salts-based deep eutectic solvents for the separation of phenols and nitrogen-containing heteroaromatics,the role of heteroaromatics as specific sites for hydrogen bond-based separation has been *** environmentally friendly solvents are known for their ability to form hydrogen bonds with heteroatoms,a key aspect in separation *** quantified the hydrogen bond interaction energy to reach the threshold energy for efficient O-and N-heteroaromatics *** article provides an in-depth study of the structural nuances of different hydrogen bonding sites and their affinity properties while conducting a comparative evaluation of the separation efficiency of ionic liquids and deep eutectic solvents from a thermodynamic *** showed that phenols with dual hydrogen bonding recognition sites were easier to separate than nitrogen-containing *** ionic liquids were more suitable for the extraction of nonbasic nitrogen-containing heteroaromatics,and quaternary ammonium salts-based deep eutectic solvents are more effective for phenols and basic nitrogen-containing heteroaromatics,which was confirmed by Fourier transform infrared spectroscopy and empirical ***,this study provides a theoretical basis for the strategy design and selection of extractants for the efficient separation of O-and N-containing aromatic compounds.

关键词： Deep eutectic solvents Hydrogen bond Ionic liquids Separation Solvents Structural characteristics

Methodology for Design of Reactive Distillation Column and Kinetics for Isoamylene Etherification Catalysed by Amberlyst 35

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China Petroleum Processing & Petrochemical Technology 2016年第4期18卷 128-136页

作者： Wu Yanli li wenying li Qiang Feng Jie Key Laboratory of Coal Science and Technology (Taiyuan University of Technology) Ministry of Education and Shanxi Province

Isoamylene from the Fischer-Tropsch syncrude can be transformed to valuable fuel oxygenate additives through an equilibrium limited etherification reaction with methanol. A reactive distillation process is established to increase isoamylene conversion. Facing the challenge of improving product purity at the same time, an equilibrium stage model based design methodology is proposed and illustrated step-by-step for converting the Fischer-Tropsch C_5 olefins to tert-amyl methyl ether(TAME) process by using Aspen Plus. Under the guide of the proposed methodology, the design leads to a TAME product purity of higher than 95% and an isoamylene conversion of higher than 90%. The etherification kinetics over Amberlyst 35 is also studied within a temperature range of 60 ℃ to 75 ℃ to shed more light on the feasibility of process development. The methodology provides an effective reactive distillation column design to achieve the target reactant conversion and product purity simultaneously.

关键词： Amberlyst 35 design methodology etherification isoamylene reactive distillation column

Flower development and sexual dimorphism in Vernicia montana

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Horticultural Plant Journal 2024年第2期10卷 586-600页

作者： wenying li Jingzhen Chen Xiang Dong Meilan liu Guibin Wang lin Zhang Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of EducationCentral South University of Forestry and TechnologyChangshaHunan 410004China State Key Laboratory of Utilization of Woody Oil Resource Hunan Academy of ForestryChangshaHunan 410004China College of Forestry Nanjing Forestry UniversityNanjingJiangsu 210037China

The mu oil tree(Vernicia montana Lour.) is a dioecious species, but the genetic mechanisms underlying its phenotypic sexual dimorphism are unclear. In this study, we determined two pivotal phases of sex differentiation of mu oil tree via morphological and histological analyses of unisexual flowers:(Ⅰ) differentiation of male or female primordia to produce staminate flowers(SFs) or transient hermaphrodite flowers(HFs),and(Ⅱ) complete abortion of stamens in transient HFs to generate pistillate flowers(PFs). A total of 1621 sex-biased genes were identified by comparative transcriptome analysis which exhibited elevated rates of protein evolution than unbiased genes. The female-biased genes were enriched in the production of defense compounds while male-biased genes were focused on the production of viable pollens. Transcriptomebased analysis revealed that the differentially expressed genes(DEGs) between PFs and SFs in phase Ⅰ involved in abscisic acid(ABA), auxin(AUX), cytokinin(CK), ethylene(ET), and gibberellin(GA) biosynthesis and signaling showed higher expression levels in males than in females in general, whereas the DEGs involved in jasmonic acid(JA) and salicylic acid(SA) pathways displayed opposite expression patterns. Moreover,differentially expressed endogenous ABA, AUX, GAs, JA, and SA exhibited consistent biased expression patterns with the DEGs by UPLC-MSbased analysis. Exogenous application of an anti-ethylene plant growth regulator could promote the development of stamens in PFs and generated HFs. Comparative transcriptomic and hormonal analyses of PFs and SFs in phase Ⅱ indicated an increase in ET concentration when abortion of stamens in PFs occurred. This study suggested that phytohormones play key roles in sex dimorphism and ET may determine the development of stamens in PFs of mu oil tree, which provides an insight into plant sex differentiation mechanisms.

关键词： Mu oil tree Flower development Sexual dimorphism Sex bias Ethylene

Production of a newly isolated Paenibacillus polymyxa biocontrol agent using monosodium glutamate wastewater and potato wastewater

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Journal of Environmental Sciences 2010年第9期22卷 1407-1412页

作者： likun Gu Zhihui Bai Bo Jin Jianyun Zhang wenying li Guoqiang Zhuang Hongxun Zhang Research Centre for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Institute of BioEnergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China School of Earth and Environment Sciences the University of Adelaide Adelaide SA 5005 Australia

A phyllosphere bacterial strain EBL-06 was isolated from wheat leaves. The morphology, cultural characteristics, phospholipid fatty acids, physiological and antagonistic fungus activities of this strain were investigated. A phylogenetic tree was constructed by comparing with the published 16S rDNA sequences of the relevant bacteria. The results showed that the isolate EBL-06 was a strain of Paenibacillus polymyxa; this strain performed a high level of antagonistic fungus activity toward a broad spectrum of phytopathogens, such as Botrytis cinerea, Cladosporium cucumerinum, Fusarium spp. The isolate EBL-06 can grow well using monosodium glutamate wastewater （MGW） and potato wastewater （PW） as culture medium. The maximum yield of 6.5 × 10^9 CFU/mL of the isolate EBL-06 anti-fungus biocontrol agent was reached in 15 hr cultivation at 28℃, pH 6.0-7.5 using the mixture of MGW and PW （1：9）.

关键词： phyllosphere Paenibacillus polymyxa wastewater phospholipid fatty acids biocontrol agent

Incidence and mortality of laryngeal cancer in China,2008–2012

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Chinese Journal of Cancer Research 2018年第3期30卷 299-306页

作者： Yuqin liu Qin Zhao Gaoheng Ding Yitong Zhu wenying li Wanqing Chen Central Cancer Registry of Gansu Gansu Cancer Hospital National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences & Peking Union Medical College

Objective：To analyze the incidence and mortality rates of laryngeal cancer in China from 2008 to ***：Incident and death cases of laryngeal cancer were retrieved from the National Central Cancer Registry（NCCR）database collecting from 135 cancer registries in China during 2008–*** crude incidence and mortality rates of laryngeal cancer were calculated by area（urban/rural）,region（eastern,middle,western）,gender and age group（0,1–4,5–9,…,85＋）.China census in 2000 and Segi’s world population were applied for age standardized *** Point（Version 4.***.0.1）model was used for time trend ***：The crude incidence rate of laryngeal cancer was 1.86/100,000 ranked the 21st in overall *** age-standardized incidence rates by China population（ASIRC）and by World population（ASIRW）were1.22/100,000 and 1.23/100,000,*** crude mortality of laryngeal cancer in China was 1.01/100,000and it was the 21st cause of cancer-related death in overall *** the age-standardized mortality rates by Chinese standard population（ASMRC）and by world standard population（ASMRW）were 0.63/100,*** and mortality rates of laryngeal cancer were higher in males than in females and higher in urban areas than in rural *** areas had the highest incidence and mortality rates followed by eastern and western *** and mortality rates of laryngeal cancer retained low level before age of 40 years old but increased greatly after and peaked in age group of *** showed significant down trends in recent 10 years by 1.27%annually[95%confidence interval（95%CI）：–2.2%,–0.3%].Mortality declined in females sharply by 5.18%per year although stable in males and both sexes ***：Appropriate targeted prevention,early detection and treatment programs should be carried out to control the local burden of laryngeal cancer.

关键词： Laryngeal cancer incidence mortality China

HERG1 K^+ Channels on the Leukemic Cells Mediated Angiogenesis in vitro

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Wuhan University Journal of Natural Sciences 2014年第2期19卷 178-184页

作者： li Huiyu GUO Dongmei ZHENG Fang liANG Kaiwei li wenying JIE Shenghua Center for Stem Cell Research and Application Union HospitalTongji Medical CollegeHuazhong University of Science and Technology

Human ether-a-go-go-related gene （HERG1） K^＋ channels are overexpressed in leukemia, which contributes to neoangiogene- sis. The purpose of this study was to investigate the role of HERG1 K^＋ channels on leukemia angiogenesis. We cultured human umbili- cal vein endothelial cells （HUVECs） in conditioned media, which were derived from leukemic cells with or without E-4031, a HERG1 K^＋ channel special inhibitor. The HUVECs proliferation was mea- sured using CCK-8 assay and migration by a Trans-well. Endothelial tube formation was investigated using Matrigel. Vascular endothelial growth factor （VEGF） levels were tested by EliSA and VEGF mRNA expression using RT-PCR. Our results revealed that blocking HERG1 K^＋ channels could inhibit leukemia-induced HUVECs pro- liferation, migration, and tube formation in vitro. The results sug- gested that HERG1 K~ channels could increase leukemia angio- genesis. Furthermore, blockage of HERG1 K^＋ channels could also decrease leukemic cells secreting VEGF and expressing VEGF mRNA. HERG1 K^＋ channels have a promoting effect on leukemia angiogenesis, and the possible mechanism may be that HERG1 K^＋ channels enhance VEGF expression. Thus, HERG1 K4 channel is a potential target of antiangiogenesis in leukemia.

关键词： HERG1 K^+hannels angiogenesis human umbilical vein endothelial cells leukemia vascular endothelial growth factor (VEGF)

Insight into MgO promoter with low concentration for the carbon-deposition resistance of Ni-based catalysts in the CO_2 reforming of CH_4

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Chinese Journal of Catalysis 2018年第1期39卷 88-98页

作者： Xiangdong Feng Jie Feng wenying li Key Laboratory of Coal Science and Technology Taiyuan University of Technology Taiyuan 030024 Shanxi China Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology Taiyuan University of Technology Taiyuan 030024 Shanxi China

The CO2reforming of CH4is studied over MgO‐promoted Ni catalysts,which were supported on alumina prepared from *** presents an improved stability compared with non‐promoted *** introduction of the MgO promoter was achieved through the‘‘memory effect’’of the Ni‐Al hydrotalcite structure,and ICP‐MS confirmed that only0.42wt.%of Mg2+ions were added into the Ni‐Mg/Al *** no differences in the Ni particle size and basicity strength were observed,the Ni‐Mg/Al catalyst showed a higher catalytic stability than the Ni/Al catalyst.A series of surface reaction experiments were used and showed that the addition of a MgO promoter with low concentration can promote CO2dissociation to form active surface oxygen arising from the formation of the Ni‐MgO interface ***,the carbon‐resistance promotion by nature was suggested to contribute to an oxidative environment around Ni particles,which would increase the conversion of carbon residues from CH4cracking to yield CO on the Ni metal surface.?2018,Dalian Institute of Chemical Physics,Chinese Academy of *** by Elsevier *** rights reserved.

关键词： CO2 reforming of CH4 Carbon‐deposition resistant Activation of CO2 Ni‐based catalyst Low concentration MgO promoter