The seal of quick opening blind plate of the three sets of the same type of feed gas separator（F-020701-1/ 2/ 3） in a gas gathering station of a high sour gas field failed in the air tightness test during the major maintenance shutdown. Through on-site mapping and inspection, taking into account its sealing principle, fault tree analysis was performed. It was concluded that the change of sealing structure due to corrosion in a hydrogen sulfide environmental was the root cause of sealing failure. The repair method adopted on site was machining the sealing structure after weld overlay of the corroded and thinned surface of the sealing structure was carried out. After the repair, the seal passed both air tightness test and helium nitrogen test to demonstrate that the equipment could be put into operation production after the shutdown.It is concluded that the unit can realize the recovery of sealing structure.

为解决某高含硫气田集输系统先导式安全阀由于本身故障原因频繁起跳故障,结合先导式安全阀结构、原理进行分析,通过对安全阀弹簧、密封O型圈进行硫化氢环境测试分析,从安装、维护操作等多方面排查.得出密封O型圈材质与硫化氢环境的不适应,安全阀附属管路设计不合理是造成先导式安全阀频繁起跳故障的根本原因.根据分析排查得出的原因提出并实施优化密封圈橡胶材质和先导式安全阀附属管路的改进措施,为先导式安全阀本身故障原因引起的频繁起跳故障提供了解决方案.

在某高含硫天然气净化厂脱硫单元中,DS系列卧式多级离心泵作为溶液循环泵,近年来多次出现振动值超高的现象.从流量、介质中固体颗粒含量的变化进行综合分析,总结出在偏离设计流量较大的工况下运行时,泵的振动值越高;介质中固体颗粒含量越高,泵的密封环磨损速度越快,泵的振动值越高.针对泵振动超高的问题,给出建议和整改措施.

在西气东输二线建设初期,气液联动阀的动力引压管与主干线焊接部位为埋地处理,由于地面沉降等原因可能会造成引压管应力集中,存在一定的风险.为了减少此类风险,提出了一种取压点改造方案,改造后取压点处仍留有一段引压管,利用有限元软件ANSYS对改造后的取压点结构进行建模,对环境温度、输气温度和输气压力等影响因素下的剩余引压管的应力进行模拟.研究表明:剩余引压管应力受管道内外壁的温差影响较大,且温差越大、输气压力越高,剩余引压管的应力越大.在不同工况下,剩余引压管最大应力均发生在引压管的角焊缝和主管线处.因此,在改造后,需要对剩余引压管的焊缝强度重新进行评估,并在管沟内适当地增加保温设施,降低剩余引压管的应力.经分析,改造方案可行.

在油气储运系统中,离心泵的耗电量是重要控制指标之一,占比较高.针对离心泵进行节电研究,找出对应的节电方法具有重要意义.本文基于工程流体力学中的伯努利方程、离心泵功率和曲线模型等原理,采集大量数据并进行分析,找出理想泵流量Q与离心泵有效扬程H在实际运行中的规律,建立数学模型,用以指导离心泵的节电实践.

电伴热系统在石油、化工、冶金、建筑等领域得到广泛应用.本文针对电伴热操作工艺的优化、电伴热的日常维护、气温环境对电伴热使用的影响等内容,对电伴热系统的节电优化措施进行探讨.

Using a high-temperature and high-pressure ultrasonic reactor,the hydrothermal cracking reaction of vacuum residue of Huizhou Refinery.The gas product composition,liquid product composition,reaction coke SEM morphology,and element analysis were investigated to discuss the mechanism of hydrothermal cracking reaction under the effect of ultrasonic wave.The results show that there is no significant difference in the yield of gas products in hydrothermal cracking reaction mechanism of the residue under the effect of ultrasonic wave and the production rate of light oil has been increased slightly while that of coke has been slightly reduced.The angularity of the coke particles is relatively smooth and the pore structure appears,indicating that under the effect of ultrasonic wave,the hydrothermal cracking reaction of residual oil is mainly based on the radical thermal reaction mechanism and the cavatition of ultrasonic wave can promote the residuum to have cracking reaction so that the production rate of light oil has been slightly increased.The mechanical effect of ultrasonic wave causes the raw coke precursor suspended in the residue to oscillate violently,so as to prevent its polymerization,thus having reduced coking,the large increase of Ni in the coke indicates that the catalyst provides a coking center for coking.

2017年G83区平均抽油泵效22.3％,导致全区平均泵效低于厂下达指标1％,因此分析G83泵效低的原因,制定提高泵效措施显得尤为重要.本文通过分析该区泵效低的主要原因,制定合理的提高泵效的措施,将该区泵效提高至25％,全区泵效达标,降低吨液能耗的目的.

在新建装置中,由于工程量大,各专业工种较多,在多工种交叉作业过程中,往往会产生一些安装错误,特别是涉及隐蔽工程,一旦前期没有及时发现整改,将会在装置开工过程中产生诸多困难.本文主要介绍一起由于管线配管与设备安装之间产生的冷却水配管错误在设备单试过程中的发现及处理过程.

海上运输与陆路运输相比具有一定的特殊性,受各方面的影响因素比较多、生产协调界面多、工作联系比较频繁.现场调度及管理人员结合自己工作实际情况,利用滚动计划原理在工作中总结出一套工作方式,将与码头作业相关的各种影响因素结合起来编制成码头作业计划"码头作业三日滚动计划管理",减少计划误差和船舶滞期提高了码头生产效率.

本文针对智能工业与石油化工技术的变革进行了具体的研究,首先阐述了石油与化工的现状,提出了智能工业为目标的变革措施,从空间维度和分布式应用两方面对技术框架进步进行了论述,最后提出了在工艺过程中无线化和无人化的实际应用.

对断裂的高压天然气压缩机平衡管法兰螺栓的金相组织、化学成分、力学性能及断口的宏、微观特征等进行了综合分析,并结合压缩机设计文件资料、运行状态等,找出其断裂的原因.结果表明,在交变载荷的长期作用下,紧固螺母与设备结合处螺栓的螺纹根部存在应力集中现象,致使该部位成为裂纹源,最终螺栓发生疲劳断裂.

随着经济发展的逐渐加快,在不断发展的过程中,所需求的能源也越来越多,特别是在石油化工方面更是如此.再利用这些能源的同时还会产生大量的有害物质危害环境,而且在这些能源利用方面说应用的技术还并不是特别高,所以整体能源利用率并不高.所以在当前能源面临枯竭,和环境破换牙那种的情况下,如何减少污染和提高利用率是当前首要考虑问题.本文通过对我国当前行业现状进行了简单描述,并对在环境和资源问题下石油化工方面的研究成果进行了简单阐述,并对我国在相关方面的在未来的发展进行了展望,希望通过本文可以唤醒行业内对于这些问题的重视,为石油化工行业的可持续发展贡献一份力量.

随着管道企业的不断发展,油气管道破坏也是愈演愈烈,严重危害管道运行安全鉴于目前管道保护的严峻形势和其他方面的诸多因素,要真正使输油气管道得到有效的保护,建立保护油气管道的长效保护体系意义重大.

轴流式止回阀作为防回流关键设备在设计过程中多采用理论公式进行强度校核和密封分析,但对于内腔结构复杂的零件,该方法不能建立有效的理论力学模型.有限元计算方法采用有限元分析软件,通过建立阀门三维模型,进行约束和加载等模拟分析,输出阀门中结构复杂零件在壳体试验压力和使用压力下的应力、变形及密封面比压的结果,根据ASME压力容器的建造规则,对阀门关键零件设计的合理性和密封结构的可靠性进行评价,可以准确、直观地量化显示各部件的应力、变形和密封比压分布情况.

In the original big particle granulation plant, there were causes that resulted in short running period, frequent bed cleaning, low production, high energy consumption, and increased labor intensity. Moreover when cleaning bed, a lot of waste water containing low concentration of urea was discharged into the waste water pool, making it hard to control the water level and easy to cause outside environmental protection problem. By adjusting operation and enhancing maintenance, the bottleneck of long period running of the granulation plant has been fundamentally eliminated, laying the foundation for long and smooth running period of the large urea particle granulator.

In order to reduce the risk in pig receiver and accessories,improving safety,reliability and practicability in pipeline inner inspection,"twice pig receiving" technique is recommended to apply in pig or inner inspection station,that is,opening both pig pilot valve and pig receiving valve,and then closing the inbound valve slowly and adjusting its opening when the receiving pig or inspection gauge passed the T-joint of pig receiver,allowing the pig or inspection gauge into the pig receiver slowly.Taking the compressor station in West-to-East Natural Gas Transmission Pipeline as an example,"twice pig receiving" operation with the traditional "once pig receiving" operation is compared from some aspects(pig receiving process,preparatory work,etc).The result indicates that "twice pig receiving" method can adjust the travelling speed of inner inspection gauge or pig into the receiver,which not only reduce the risk of pig on receiver and accessories substantially,but also obviously improve the safety of inner inspection gauge receiving or pig.

本文主要基于Iu/A-Flex、IP承载技术以及传统的备份方式,讨论了现代移动通信网络的通用容灾方案,为通信网络安全提供了一种可选的通用容灾模式。

主要结合国内天然气管道输气行业所采用的国外先进设备,在日常的工作运行维护中出现的一些问题,燃气发生器的高压压气机部分叶片损伤较多,对出现这种现象的原因进行分析并对可能的改进措施进行讨论。

LM2500型机组作为GE公司成熟经典机型，已在世界航空、能源领域广泛使用，尤其是在燃机领域发挥着重要作用。本文主要以该型机组在国内天然气管道输送行业中某压气站的故障案例为题，对其燃料气系统的进行介绍，并分析故障原因以及解决办法。