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Experimental investigation of erosion rate for gas-solid two-phase flow in 304 stainless/L245 carbon steel

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Petroleum Science 2022年第3期19卷 1347-1360页

作者： Bingyuan Hong Yanbo Li Xiaoping Li Gen Li ong Huang Shuaipeng Ji Weidong Li Jing Gong Jian Guo National-Local Joint Engineering Laboratory of Harbor Oil&Gas Storage and Transportation Technology Zhejiang Provincial Key Laboratory of Petrochemical Pollution ControlZhejiang Ocean UniversityZhoushan316022PR China National Engineering Laboratory for Pipeline Safety MOE Key Laboratory of Petroleum EngineeringBeijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum-BeijingFuxue Road No.18Changping DistrictBeijing102249PR China CNOOC Research Institute Co.Ltd Beijing100028PR China PipeChina North Pipeline Company LangFang065000PR China College of Chemical Engineering Fuzhou UniversityFuzhou350108PR China

erosion is one of the most concerning issues in pipeline flow assurance for the Oil&Gas pipeline industries,which can easily lead to wall thinning,perforation leakage,and other crucial safety risks to the steady operation of *** this research,a novel experimental device is designed to investigate the erosion characteristics of 304 stainless and L245 carbon steel in the gas-solid two-phase *** the impacts on erosion rate,the typical factors such as gas velocity,impact angle,erosion time,particle material and target material are individually observed and comprehensive analyzed with the assistance of apparent morphology characterized via Scanning Electron *** results show that the severest erosion occurs when the angle reaches approximate 30°whether eroded by type I or type II particles,which is observed in both two types of ***,304 stainless steel and L245 carbon steel appear to be cut at low angles,and impacted at high angles to form erosion *** the steady operational state,the erosion rate is insensitive to the short erosion time and free from the influences caused by the“erosion latent period”.Based on the comparison between experimental data and numerical results generated by existing erosion models,a modified model with low tolerance(erosion in terms of two types of steel under various industrial conditions.

关键词： Gas-solid flow erosion 304 stainless L245 carbon steel erosion model

Numerical study on erosion behavior of sliding sleeve ball seat for hydraulic fracturing based on experimental data

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Petroleum Science 2023年第1期20卷 515-525页

作者： Xuan-Li Zhou Yan-Bao Guo Qiu-Ju Xie De-Guo Wang Hyun C.Yoon College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China Harold Vance Department of Petroleum Engineering Texas A&M UniversityCollege StationTX77843United States Korea Institute of Geoscience and Mineral Resources Daejeon34132South Korea

The sleeve sealing ball seat is one of the important components in the multistage fracturing process of horizontal *** erosion and wear of the surface will decrease the sealing performance of the fracturing ball and the ball *** leads to pressure leakage during the fracturing process and fracturing *** this paper,combined with the actual ball seat materials and working conditions during the fracturing process,the erosion tests of ductile iron and tungsten carbide materials under different erosion speeds,angles,and mortar concentrations are carried *** the erosion test results were analyzed by mathematical fitting,and a set of erosion models suitable for sliding sleeve setting ball seat materials were innovatively *** the first time,this paper combines the erosion model obtained from the experiment and the computational fluid dynamics(CFD)with Fluent software to simulate the erosion of the ball *** on the simulation results,the morphology of the sliding sleeve seat ball after erosion is *** analysis of the test and simulation results,it is showed that the erosion rate of tungsten carbide material is lower and the wear resistance is better under the condition of small angle *** research can offer a strong basis for fracturing site selection,surface treatment methods,and prediction of failure time of ball seats.

关键词： Multistage fracturing Sliding sleeve ball seat erosion wear erosion model Fluent simulation

Recovery rates of iron, nickel, and chromium via iron-bath reduction of stainless steel dust briquettes based on corundum crucible erosion balance analysis

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Journal of Iron and Steel Research International 2018年第3期25卷 320-329页

作者： Fei Yuan Hui-ning Zhang Hui Li Jian-hong Dong Hui-hui Xiong An-jun Xu School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083 China School of Metallurgy and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000 Jiangxi China China Metallurgical Industry Planning and Research Institute Beijing 100083 China

The leaching of chromium from stainless steel dust （SSD） is deleterious to the environment. To address this issue, the reduction of SSD briquettes can be employed to effectively extract chromium. The recovery rates of iron, chromium, and nickel via ironbath reduction of SSD briquettes were determined using X-ray fluorescence spectroscopy, X-ray diffraction, and scanning electron microscopy measurements. First, the effects of basicity and contents of silicon, iron, CaF2, and carbon on the recovery rates of the three metals were analyzed using the slag amount prediction model, which was originally established from the A1203 balance of corundum crucible erosion behavior. Second, the effect of feeding mode, i.e., whether steel scrap and SSD briquettes were simultaneously added, on the recovery rates was discussed in detail. Third, the iron-bath reduction of SSD briquettes was thermodynamically analyzed. The results indicated that the recovery rates of the three metals are greater than 95% those of using a basicity of 1.5 and 6.0% CaF2, 15% carbon, and 7% ferrosilicon. The recovery rate of chromium increases twofold with the addition of ferrosilicon. The feeding mode of adding briquettes and steel scrap simultaneously is better for recovery of metals and separation of the metal and slag than the feeding mode of adding steel scrap firstly and then briquettes.

关键词： Stainless steel dust erosion model Ferrosilicon Iron Nickel-Chromium Recovery Iron-bath reduction

SOIL erosion AND ITS IMPACTS ON ENVIRONMENT IN YIXING TEA PLANTATION OF JIANGSU PROVINCE

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Chinese Geographical Science 2003年第2期13卷 142-148页

作者： ZHANGYah ZHANGHong PENGBu-zhuo YANGHao LaboratoryofMaterialCyclinginPedosphere InstituteofSoilSciencesChineseAcademyofSciencesNanjing210008P.R.China DepartmentofUrbanandResourcesSciences NanjingUniversityNanjing210093P.RChina

Soil erosion on sloping field has led to a lot of environmental prob lems. In order to reveal the seriousness of the damage of soil erosion on slopin g fields 137Cs tracer method was used to estimate soil erosion rate. 137Cs refer ence inventory of 2200Bq/m2 in Yixing, southern Jiangsu Province, was estimated and a model for estimating erosion of cultivated soil was established in order t o avoid overestimating soil erosion rates. Then based on the soil erosion rates and measured soil physical and chemical properties, direct and indirect impacts of soil erosion on environment were further discussed. Direct impacts of erosion on environment included on-site and off-site impacts. The on-site impacts we re that soil layer became thin, soil structure was deteriorated and soil nutrien ts decreased. The off-site impacts were that water bodies were polluted. The in direct impacts of soil erosion on environment were the increase of fertilizer ap plication and energy consumption, and change of adaptability of land uses. Altho ugh erosion intensity was not serious in the study area, its environmental impac ts should not be ignored because of great soil nutrient loss and coarseness of s oil particles.

关键词： Cs reference inventory erosion model soil erosion equivalent erosion module

The Synthesis and Display of the Natural Eroded Terrain

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Computer Aided Drafting,Design and Manufacturing 1997年第2期7卷 58-62,65页

作者： Zou Rongjin Jiangsu Uniersity of Scence and Technology ,Jiangsu ZhenJiang,212000

This paper describes the erosion procedure of the natural terrain and deduces the two main physical physical procedures by the hydraulic erosion and thermal weathering. through a large number of iteration calculation ... 详细信息

关键词： Terrain model erosion model realistic graphics aerophotogrammetric data