探讨储油罐防腐的施工方法及控制策略

储油罐腐蚀极易导致储油罐穿孔和石油泄漏问题,不但会影响石油企业的经济效益,还会给企业的工作人员和外部环境造成影响,为了避免储油罐出现泄露现象石油企业需要应用相应的施工方式。为此,本文分析了储油罐防腐的施工方法和储油罐防腐的控制策略,旨在为储油罐防腐工作的进行提供参考意见。     

储油罐防腐的施工方法及施工控制

在进行石油存储的过程中,储油罐内部物质与外部的空气以及土壤等物质进行接触而产生化学反应,导致储油罐出现泄漏,从而导致极为严重的后果出现。为了保证石油的安全运输,必须提升储油罐的防腐水平。本文对当前储油罐的腐蚀现状进行研究,并提出储油罐防腐的施工方法,通过有效的控制提高储油罐的防腐水平,提升储油罐的质量。     

储油罐防腐施工方法及施工质量控制的途径探讨

储油罐是石油企业进行石油存储和运输的重要设施,储油罐的防腐对企业有着重要的意义。本文主要分析了储油罐防腐施工的不同方法以及质量控制措施,以供相关人员参考。     

储油罐内底板与底圈壁板腐蚀分析与防护研究

当前,随着我国石油行业的迅猛发展,石油的开采和储备成为了石油行业工作的重心和重点。在石油储备过程中,储油罐的防腐与防护工作就成为了石油储备工作中的重中之重。本文对储油罐进行了简要阐述,并分析出储油罐受到腐蚀的原因,并针对储油罐腐蚀原因,着重探讨了储油罐内底板与底圈壁板防腐措施研究,旨在为储油罐防腐技术的提升,及我国石油行业能够更加健康、稳步的发展,做出自己应有的贡献。     

浅谈储油罐防腐的施工工艺和技术标准

随着石油工业的不断发展,我国在石油储存方面的能力也不断地提高,但是在储油罐防腐施工工艺方面需要进一步加强。本文通过对储油罐防腐施工的主要内容及控制要点进行阐述,分析了储油罐防腐施工工艺,并提出了储油罐防腐施工的相关技术标准。     

浅谈油田储油罐防腐措施及应用

随着我国石油需求度的不断增加,储油罐得到了广泛地应用。而石油的结构及成分颇为复杂,在实际储存的时候必须要结合实际情况做好防腐措施。文章主要针对油田储油罐防腐措施展开具体探究,对油田储油罐腐蚀原因、防腐措施进行重点分析,并由此对油田储油罐防腐措施的应用做出简单概述。     

浅谈油田储油罐防腐措施及应用

石油的构成成分较为复杂,因此,在储存石油的过程中要做好防腐措施。随着石油的增加,储油罐得到充足的运用。在对石油采取防腐措施时,必须要结合实际情况选择防腐措施。因此,本文将对油田储油罐防腐措施及应用进行深入的研究。     

储油罐防腐的施工方法及控制策略

当前,我国在储油罐腐蚀问题上形势较为严峻,储油罐因腐蚀发生穿孔和石油泄露的事故频繁发生,致使石油企业蒙受了极大的经济损失,对周围环境也造成了极大的破坏。而在储油罐防腐工作中,施工质量直接影响到储油罐的防腐性能,因此,为了确保储油罐的防腐性能得到最大保证,就必须加强施工质量的管理及控制。     

储油罐腐蚀及其防护措施探究

随着科技的不断发展,储油罐的防腐技术也得到了相应的提高。对于目前的储油罐防腐技术来说,虽然有一定程度上的提高,但储油罐防腐技术发展的过程中也遇到了瓶颈。为了能够延长储油罐的使用时间,本文从储油罐的设计以及保护的实际做法出发,依据了浮顶储油罐和拱顶储油罐两种油罐的腐蚀现状进行分析,研究导致储油罐腐蚀的根本原因,并对于储油罐的防护措施提出了几点建议。     

油田储油罐防腐措施分析

经济的发展促使社会对石油资源的需求量不断增多,石油储油罐的应用也越来越广泛了。因此,本文主要分析了油田储油罐防腐措施,希望能够对我国油田资源利用的优化起到一定帮助作用。     

Effects of Post-weld Heat Treatment on Microstructure,Mechanical Properties and the Role of Weld Reinforcement in 2219 Aluminum Alloy TIG-Welded Joints

In as-welded state, each region of 2219 aluminum alloy TIG-welded joint shows diff erent microstructure and microhardness due to the diff erent welding heat cycles and the resulting evolution of second phases. After the post-weld heat treatment, both the amount and the size of the eutectic structure or θ phases decreased. Correspondingly, both the Cu content in α-Al matrix and the microhardness increased to a similar level in each region of the joint, and the tensile strength of the entire joint was greatly improved. Post-weld heat treatment played the role of solid solution strengthening and aging strengthening. After the post-weld heat treatment, the weld performance became similar to other regions, but weld reinforcements lost their reinforcing eff ect on the weld and their existence was more of an adverse eff ect. The joint without weld reinforcements after the post-weld heat treatment had the optimal tensile properties, and the specimens randomly crack in the weld zone.     

The First Phase of the SRIF Industrialized Base in ＂West Area＂ Has Been Put into Operation

After nearly two years＇ tense construction, the first phase of industrialized base of Shenyang Research Institute of Foundry （SRIF）, located at the Tiexi Casting and Forging Industrial Park in the west of Tiexi District, has now been completed and formally put into operation.     

THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH

Institute of Process Engineering, Chinese Academy of Sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially in the potassium hydroxide fusion, is important for the optimization of the operating parameters of the oxidative leaching process. A traditional thermodynamic method is proposed and the thermal decomposition and the reaction decomposition during the oxidative leaching of chromite with KOH and oxygen is discussed, which suggests that chromite is mainly destroyed by reactions with KOH and oxygen. Meanwhile, equilibrium of the main reactions of the above process was calculated at different temperatures and oxygen partial pressures. The stable zones of productions, namely, K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial to thermodynamic reactions. In addition, a comparison of the general alkali methods is carried out, and it is concluded that the KOH leaching process is thermodynamically superior to the conventional chromate production process.     

INFLUENCE OF HEAT TREATMENT ON DAMPING BEHAVIOUR OF THE MAGNESIUM WROUGHT ALLOY AZ61

The effect of isochronal heat treatments for 1h on variation of damping, hardness and microstructural change of the magnesium wrought alloy AZ61 was investigated. Damping and hardness behaviour could be attributed to the evolution of precipitation process. The influence of precipitation on damping behaviour was explained in the framework of the dislocation string model of Granato and Lücke.     

Theoretical Analysis for the Motion and Temperature of Melt Droplets in Spray Degassing Process

The motion of melt droplets in spray degassing process was analyzed theoretically. The height of the treatment tank in spray degassing process could be determined by the results of theoretical calculation of motion of melt droplets. To know whether the melt droplets would solidify during spraying process, the balance temperature of melt droplets was also theoretically analyzed. Then proof experiments for theoretical results about temperature of melt droplets were carried. In comparison, the experimental results were nearly similar to the calculation results.     

Growth Kinetics of Single Inclusion Particle in Molten Melts

On the basis of the single-particle framework, a new theory on inclusion growth in metallurgical melts is developed to study the kinetics of inclusion growth on account of reaction and collision. The studies show that the early growth of inclusion depends on reaction growth and Brawnian motion collision, and where the former is decisive, the late growth depends on turbulence collision and Stokes＇ collision, and where the former is dominant; collision growth is very quick during the smelting process, lessened in the refining process, but nearly negligible in the continuous casting process.     

An Easy Way to Quantify the Adhesion Energy of Nanostructured Cu/X(X=Cr,Ta,Mo,Nb,Zr) Multilayer Films Adherent to Polyimide Substrates

An approach based on film buckling under simple uniaxial tensile testing was utilized in this paper to quantitatively estimate the interfacial energy of the nanostructured multilayer films(NMFs) adherent to flexible substrates. The interfacial energies of polyimide-supported NMFs are determined to be *5.0 J/m2 for Cu/Cr, *4.1 J/m2 for Cu/Ta,*2.8 J/m2 for Cu/Mo, *1.1 J/m2 for Cu/Nb, and *1.2 J/m2 for Cu/Zr NMFs. Furthermore, a linear relationship between the adhesion energy and the interfacial shear strength is clearly demonstrated for the Cu-based NMFs, which is highly indicative of the applicability and reliability of the modified models.     

High-Speed Friction Stir Welding of SiC_p/Al–Mg–Si–Cu Composite

A 17 vol% SiCp/Al–Mg–Si–Cu composite plate with a thickness of 3 mm was successfully friction stir welded(FSWed) at a very high welding speed of 2000 mm/min for the first time. Microstructural observation indicated that the coarsening of the precipitates was greatly inhibited in the heat-affected zone of the FSW joint at high welding speed, due to the significantly reduced peak temperature and duration at high temperature. Therefore, prominent enhancement of the hardness was achieved at the lowest hardness zone of the FSW joint at this high welding speed, which was similar to that of the nugget zone. Furthermore, the ultimate tensile strength of the joint was as high as 369 MPa, which was much higher than that obtained at low welding speed of 100 mm/min(298 MPa). This study provides an effective method to weld aluminum matrix composite with superior quality and high welding efficiency.     

A STUDY OF TEMPERATURE-DEPENDENT VALENCE BOND STRUCTURE OF TITANIUM

On the basis of energy and shape method for the determination of the valence bond (VB) structures of crystal, the valence bond structure of titanium is redetermined at room temperature and calculated in the whole temperature range of 0-1943K. The outer shell electronic distribution of Ti is e_c~(2.9907) · (s_c~(0.4980) d_c~(2.4927)) ef1.0093 in crystal. The temperature dependences of the VB structures of hcp and bcc phases are the same. The VB structures of hcp and bcc phases monotonically increase or decrease with the increase in temperature, but show discontinuous changes at the phase-transformation temperature 1155K.     

新型的治疗阿尔茨海默氏症药物(1-二甲基磷酰基-2,2,2-三氯)-乙基-1-醇烟酸醋对体外神经细胞的作用

目的: 观察本实验室合成的一种治疗阿尔茨海默氏症(AD)的药物(1-二甲基磷酰基-2, 2, 2 -三氯)-乙基^-1-醇烟酸醋(NMF),对体外培养的皮层神经细胞活性的影响以及对海人藻酸(KA)所致的神经损伤的保护作用。方法: 采用体外培养皮层神经元的方法,解剖分离 15 d胚胎小鼠皮层神经细胞, 接种于 96孔板,48 h 后加药并培养 72 h,以 MIT 法 观察 NMF 对小鼠皮层神经细胞活性的影响;同时将接种于 24 孔板的细胞预先给予 NMF,d 3 时加或不加KA处理后,以台盼蓝染色鉴别并计数死、活细胞,可得出细胞的存活率。结果: NMF 明显促进胎鼠皮层神经元活性,其中 NMF1、0. 1、10nmol·L^-1促进神经元活性增殖率分别高达 34.7%、37.4%、36. 7%, NMF 明显促进正常胎鼠皮层神经元存活卒,与对照组比较,10nmol·L^-1 NMF 对皮层神经元的存活率分别提高 39.3%、73.5%。 NMF能显著 对抗 KA 所致的神经元损伤,与 KA 损伤组相比, NMF0.1、10、10nmol·L^-1对损伤皮层神经元的保护率分别为 77.30%、80.10%、84.15%。结论: NMF 明 显促进胎鼠皮层神经元的洁性、提高正常皮层神经元,的存活卒,并能有效地保护KA所致的神经元损伤,提示 NMF 是一种很有潜力的治疗 AD 的药物。