防蜡剂与渗透剂复配用于清防蜡及油层解堵

简要介绍了ZY-3型水基清防蜡剂与T型渗透剂的复配体系的清防蜡及解堵机理、复配液对魏岗原油流变性的影响,提出了复配液的使用方法。现场应用结果表明该复配体系具有良好的清防蜡、破乳、降粘、解堵作用。     

油水井ZHJ系列堵剂的研究与应用

基于三角相图方法，由长庆油田广泛使用的清蜡剂ＫＹ－３、专门配制的两种浓缩酸Ｗ－Ｐ和Ｗ－Ｉ及筛选出的表面活性剂ＲＪＩＩ－１０３配制出了适用于油井解堵的胶束酸ＺＩＩＪ－１和适用于注水井解堵的胶束酸ＺＩＩＪ－３，浓缩酸Ｗ－Ｉ为解堵剂ＺＩＩＪ－４。对这三种缓速酸解堵剂的多项进行了室内对比评价：互溶性和配伍性；高低温和放置稳定性；溶垢、溶蜡性能；缓速性能；腐蚀性；二次乳化；酸渣量；界面张力。介绍了在长庆油田     

陕北天然气处理厂甲醇回收系统堵塞原因分析

陕北天然气处理厂甲醇回收系统自投运以来,过滤器、精馏塔和甲醇回收系统频繁堵塞。为此,通过污水水质分析、污水粒度分析、污水过滤性能及堵塞物分析找出甲醇回收系统堵塞的主要原因,为甲醇回收系统工艺优化提供理论依据。     

精氩塔余气放空管道堵塞处理

在空分设备停车期间,因精氩冷凝器内存有液氮,造成精氩塔氩侧产生负压,使湿空气通过余气放空管道进入精氩塔,水分在低温处结冰后冻堵余气放空管。介绍处理措施和故障处理时的注意事项,并提出了防范措施。     

Experimental investigation on blockage boundary for pneumatic conveying of powders in narrow bifurcation slits

To investigate the blockage characteristics for dense-phase pneumatic conveying in narrow bifurcation slits, a study on the blockage boundary conditions of powders was undertaken. The results show that the solid mass flow rate for blockage increases with superficial air velocity, and the variation trend can be divided into three typical stages. Besides the relationship between the solid loading ratio and superficial air velocity for blockage in the bifurcation slit displays a “S” shape with the increase of air velocity, the solid loading ratio increases, then decreases, finally increases, and in each stage above, the relationship between the two approximately meets power function, respectively. According to the “S” shape relationship, the formula used for blockage boundary [Setia, Mallick, Wypych, and Pan (2013). Validated scale-up procedure to predict blockage condition for fluidized dense-phase pneumatic conveying systems, Particuology, 11, 657–663] was modified into piecewise function for bifurcation slits. In addition, with the increase of the bifurcation angle and conveying pressure, the superficial air velocity decreases, while the solid mass flow rate and the critical solid loading ratio increase. The research work could help understand the blockage theory of the dense-phase pneumatic conveying.     

合成气装置炭黑洗涤系统的优化运行

论述了因重油粘度大幅度升高,导致裂化气中炭黑含量升高,堵塞炭黑洗涤系统的多个部位,影响气化炉的安全稳定运行;找到了堵塞的原因;采取有效措施进行优化,提高了炭黑洗涤系统的处理能力,保证了老装置的安全稳定运行.     

主换热器空气通道堵塞原因分析及处理

由于550m3/h空分设备污氮回热器通道内漏,未经冷却的高压空气在回热器中窜入低压端复热的污氮气中,造成分子筛加温污氮气中水含量严重超标,使分子筛再生不彻底,吸附效果降低,使水分进入主换热器中并冻结堵塞空气通道。通过整改,使加温污氮气直接进入电加热器加热后再对分子筛进行加温再生,以保证空分设备正常运行。     

Tracking the thermal induced vapor transport across foam microstructure by means of micro-sensing technology

In thermally processed multiphase systems such as cereal based foam, the material characteristics as well as the thermo-physical processes are of major impact on the internal heat transfer rate. Improving and optimizing this production step would contribute to an enormous amount of energy saving, considering the high demand on bakery products in the world. Bread baking is a high complex process and the determination of the included processes and their relevance is not simple, since the main processes are occurring in the micro-scale. Heat transfer in cereal based foam is expected to depend mainly on the evaporation–condensation mechanism, therefore it is crucial to determine heat and mass transfer phenomena inside the bread. Due to the hazardous surrounding conditions, such as high temperature and humidity it becomes challenging to find applicable sensors working reliable under such conditions. This study shows the application of micro-sensors to examine temperature and humidity distribution inside the foam during heating and gives insight in the impact of water vapor on the heating rate due to evaporation–condensation.     

高压电脉冲化学剂联合解堵

本文介绍了高压电脉冲装置的构造、技术参数、解堵原理及解除油井堵塞的效果，Ｏ／Ｗ型水基乳液解堵剂ＬＲ１的组成及应用性能，高压电脉冲化学剂ＬＲ１联合解堵工艺；通过一个井例说明了辽河油田采用联合解堵方法获得的效果。     

防止AES中和换热器堵塞的措施

自2003年开车以来,中国石油吉林石化公司电石厂AES车闻中和板式换热嚣1-HE50101泄漏堵塞频繁,大约每2～3个月就因为板片泄漏或堵塞造成系统停车.通过反复实验:每次停车前改用AE％晚置换AES24O3;生产AES24O3时先改生产AES24O2,正常后在切换AES24O3,这样有效防止中和换热器的堵塞泄漏,不但...