检索结果-南通市图书馆

Study on characteristics of pipeline transportation and sulfur fixing of cleaned coal logs

在线全文

学校读者我要写书评

暂无评论

Journal of Coal Science & Engineering(China) 2006年第1期12卷 91-95页

作者：林愉林群唐军刘同成 School of Mechanical and Clectrical Engineering Jiangxi University of Science & Technology Ganzhou 341000 China

As special cylindrical briquettes of coal for long distance pipeline transportation and directly cleaned combustion the cleaned coal logs should possess two characteristics of transportation in pipeline and cleaned combustion. In order to make cleaned coal logs a rational technology for manufacturing, cleaned coal logs was designed and compound sulfur fixing binders with high effects of binding and sulfur-fixing was selected and combined. In addition, by means of characteristic experiments of strength, wear, waterproof and sulfur-fixing five different cleaned coal logs made with different compound sulfur fixing binders in different compaction conditions was tested and measured. Experimental results indicated that the manufacturing technology of cleaned coal logs was reasonable and the combination of compound sulfur fixing binders was scientific. Cleaned coal logs made up with the fourth group of coal mixture had high strength, good waterproof property, efficient sulfur-fixing, good characteristic of transportation, and achieved the performance requirement for pipeline transportation and sulfur fixing.

关键词： cleaned coal log pipeline transportation sulfur fixing

An integrated MINLP model for multi-party coordination in downstream oil supply chain

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第3期21卷 2066-2079页

作者： Rui Qiu Bo Zhang Wei Zhao Ren-Fu Tu Man-Qiu He Qi Liao Yong-Tu Liang National Engineering Laboratory for pipeline Safety/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-BeijingFuxue Road No.18Changping DistrictBeijing102249PR China Strategy&Implementation Department PipeChinaDongtucheng Road No.5Chaoyang DistrictBeijing100013PR China

Cooperation among enterprises can bring overall and individual performance improvement,and a smooth coordination method is ***,due to the lack of customized coordination methods,cooperation in the downstream oil supply chain cannot be carried out *** paper intends to propose a multi-party coordination method to promote cooperation between oil shippers and pipeline operator by optimizing oil transportation,oil substitution and pipeline pricing *** integrated game-theoretic modeling and analysis approach is developed to characterize the operation behaviors of all stakeholders in the downstream oil supply *** proposed mixed integer nonlinear programming model constrains supply and demand capacity,transportation routes,oil substitution rules and pipeline freight *** transformation and price discretization are introduced for model linear *** experiments are carried out in the oil distribution system in South *** results show that compared to the business-as-usual scheme,the new scheme saves transportation cost by 3.48%,increases pipeline turnover by 5.7%,and reduces energy consumption and emissions by 7.66%and 6.77%.It is proved that the proposed method improves the revenue of the whole system,achieves fair revenue distribution,and also improves the energy and environmental benefits of the oil supply chain.

关键词： Downstreamoil supplychain Multi-partycoordination Cooperative game Mixed integernonlinear programming model pipeline transportation Revenue distribution

在线全文

学校读者我要写书评

暂无评论

多相流技术在凝析气管道输送中的应用

中国造船 2002年第Z1期43卷 187-193页

作者：郭揆常上海石油天然气总公司

多相流技术是当前管道输送技术发展的一个重要方面.多相流技术在降低管道投资,减少运行费用方面的显著特点已使其越来越多地用于油气管道输送.在海洋油气田开发中,为简化平台处理工艺、减少管道投资,油气输送多采用多相流输送.凝析气是... 详细信息

多相流技术是当前管道输送技术发展的一个重要方面.多相流技术在降低管道投资,减少运行费用方面的显著特点已使其越来越多地用于油气管道输送.在海洋油气田开发中,为简化平台处理工艺、减少管道投资,油气输送多采用多相流输送.凝析气是多元组分的气体混合物,以饱和烃组分为主,在开采,输送过程中的凝析和反凝析现象显著,这使凝析气的管道输送不同于气体或液体的单相输送,凝析气的气液混相输送是多相流输送的一种特例.针对东海平湖油气田海底输气管道采用多相流技术输送凝析气的实例,分析了凝析气混相输送管道压降、输量和持液率的关系,并指出了预测管路温度下降值是管路安全运行的必要条件.通过对平湖凝析气管道的运行分析,强调工艺配套是多相流技术成功应用的重要条件.

关键词：多相流技术油气管道输送应用 pipeline transportation 凝析气气液混相输送东海平湖油气田油气田开发气体混合物运行分析运行费用油气输送温度下降投资输送过程输气管道凝析现象简化平台技术发展管路

Rheological behavior of paste in metal mines

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 717-726页

作者： Aixiang Wu Zhuen Ruan Jiandong Wang Key Laboratory of High-Efficient Mining and Safety of Metal Mines of the Ministry of Education University of Science and Technology BeijingBeijing 100083China Shunde Graduate School of University of Science and Technology Beijing Foshan 528399China School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China

Cemented paste backfill(CPB)has been one of the best practical approaches for tailings management and underground goaf *** rheology is a science to study the flow and deformation behaviors of paste or filling body under the effects of stress,strain,temperature,and time during the CPB *** goal of studying paste rheology is to solve the engineering problems existing in four key processes;that is,paste rheology should meet the engineering demands of thickening,mixing,transportation,and ***,paste rheology is extremely complicated due to its high concentration,materials complexity,and engineering characteristics of non-stratification,nonsegregation,and *** rheological behavior of full tailings in deep thickening,rheological behavior of paste in mixing and pipeline transportation,and rheological behavior of filling body are introduced and discussed:(1)gel point,compressive yield stress,and the hindered settling function are adopted to characterize the rheological properties of full tailings in deep *** of Coe-Clevenger theory and Buscall-White theory can also analyze the thickening performance in the whole area of deep cone thickener;(2)yield stress and viscosity are consistent with the evolution trend of the relative structure coefficient of paste in mixing;(3)coupling effect of wall slip and time-temperature dependency has a significant influence on the rheological properties and pipeline transportation;(4)damage variable is introduced to the Burgers model to describe the creep damage of the filling ***,in-depth and systematic studies were still needed to establish a complete theoretical system of paste rheology in metal mines.

关键词： paste rheology cemented paste backfill thickening mixing pipeline transportation

Wall slip behavior of cemented paste backfill slurry during pipeline based on noncontact experimental detection

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2023年第8期30卷 1515-1523页

作者： Zhenlin Xue Haikuan Sun Deqing Gan Zepeng Yan Zhiyi Liu School of Mining Engineering North China University of Science and TechnologyTangshan 063200China Mining Development and Safety Technology Key Lab of Hebei Province Tangshan 063009China School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China

Wall slip is a microscopic phenomenon of cemented paste backfill(CPB)slurry near the pipe wall,which has an important influence on the form of slurry pipe transport flow and velocity *** probing the wall slip characteristics using conventional experimental methods is ***,this paper established a noncontact experimental platform for monitoring the microscopic slip layer of CPB pipeline transport independently based on particle image velocimetry(PIV)and analyzed the effects of slurry temperature,pipe diameter,solid concentration,and slurry flow on the wall slip velocity of the CPB slurry,which refined the theory of the effect of wall slip characteristics on pipeline *** results showed that the CPB slurry had an extensive slip layer at the pipe wall with significant wall *** slurry temperature improved the degree of particle Brownian motion within the slurry and enhanced the wall slip *** the pipe diameter was not conducive to the formation of the slurry slip layer and led to a transition in the CPB slurry flow *** increase in the solid concentration raised the interlayer shear effect of CPB slurry flow and the slip *** slip velocity value increased from 0.025 to 0.056 m·s^(-1)when the solid content improved from 55wt%to 65wt%.When slurry flow increased,the CPB slurry flocculation structure changed,which affected the slip velocity,and the best effect of slip layer resistance reduction was achieved when the transported flow rate was 1.01 m^(3)·h^(-1).The results had important theoretical significance for improving the stability and economy of the CPB slurry in the pipeline.

关键词： particle image velocimetry cemented paste backfill noncontact experimental platform wall slip behavior pipeline transportation

Advances in rheology and flow assurance studies of waxy crude

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2013年第4期10卷 538-547页

作者： Zhang Jinjun Yu Bo Li Hongying Huang Qiyu National Engineering Laboratory for pipeline Safety/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum

Flow assurance is one of the core issues in safe and economical operation of waxy crude *** essence lies in flow and heat transfer of the *** the past 10 years,the authors＇ team has achieved a lot of innovative results in aspects of waxy crude rheology,flow assurance assessment,and pipelining technologies on the basis of decades of *** rheological characteristics of waxy crude are much better understood,and a method for quantitatively simulating the effect of flow shear was developed based on some theoretical *** of the mechanism of waxy crude rheology have been deepened to the quantitative *** successful development of efficient numericalalgorithms,accurate simulations have been achieved for various complex flow and heat transfer situations in waxy crude pipelining,and a reliability-based approach to flow assurance assessment has been set *** pipelining technologies have been developed such as batching pour-point depressant-（PPD-） treated multiple-waxy-crudes,intermittent transport of waxy crudes through long-distance pipelines,and batching hot and cold *** their application,a series of problems hindering safe,efficient and flexible operation of waxy crude pipelines were tackled,demonstrating that transportation technologies for waxy crude have advanced to a new and high level.

关键词： Waxy crude pipeline transportation flow assurance rheology numerical simulation