| 摘要: |
| 为探究LNG工厂脱碳贫液泵联锁停机因素互为影响规律,全面分析运行工况,指导下步整改。收集湖北500×104 m3/d LNG工厂国产化示范工程相关设备多年运行工况,描述汇总贫液泵运行问题,丰富问题分析宽度,选用层次分析法量化表征具体事件,权重化相关问题。研究表明:①运用层次分析法进行数学建模,能充分利用当前信息进行问题分析,有效将模糊定性的联锁停机现象量化为科学权重,指导相应问题的剖析与具体方案的制定,解决了因分析资料有限而造成的决策瓶颈,降低了盲目购买、更换备件的经济风险,提升了管理水平；②温度、振动、仪表损坏等诱发的机泵联锁原因具有交叉性,既能单一触发联锁,又能互相促进导致停泵,极具技术分析复杂性,操作管理难度大,当前的改进措施只能局部或暂时解决问题,后续是否存在缺陷需要时间验证；③为保证工厂平稳生产,不能出现经常性的停泵故障检查和维修,必须在停工检修期间对设备工况进行彻底排查,根治问题,并在正常生产期间按运转时间切换维保。 |
| 关键词: LNG工厂 脱碳 贫液泵 量化 层次分析法 |
| DOI：10.3969/j.issn.1007-3426.2018.05.010 |
| 分类号: |
| 基金项目:中国石油西气东输二线管道工程项目(CQE200700506) |
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| Analysis on operation condition of decarbonization lean liquid pump in LNG plant |
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Yang Ye1, Li Haoyu2, Dai Wenping2, Guo Xiaolei2, Li Hua2
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1. Hubei Xinjie LNG Project Department,Jianghan Oil Production Factory,Sinopec Jianghan Oilfield Branch Company, Huanggang, Hubei, China;2. PetroChina Oil & Gas Pipeline Control Center, Beijing, China
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| Abstract: |
| In order to explore the interlocking and stopping factors of decarbonization lean liquid pump in LNG plant, the operation conditions are comprehensively analyzed and used to provide guidance for the next improvement. Operation conditions of Hubei 5×106 m3/d LNG plant localization demonstration project relating equipments are collected for many years. Surmmaries for operation problems of lean liquid pump are deiscribed and the width of problem analysis is enlarged. The analytic hierarchy process is used for quantitative characterization of specific events and the related issues are weighed. The research shows that mathematical model with analytic hierarchy process(AHP) can make full use of current information for problem analysis. Fuzzy qualitative interlock shutdown situation can be changed effectively to science weight to provide guide analysis and the concrete plans for corresponding problems. Decision-making bottlenecks caused by analyzing data are eliminated to reduce economy risks for purchasing blindly and replacement of spare parts, and to improve the management level. The interlocking causes of machine and pump caused by temperature, vibration and instrument damage are intersecting, which can not only be triggered of interlocking by single but also be promoted by each other, and can lead to the shutdown of the pump. Due to the complexity of technical analysis and the difficulty of operation management, the current improvement measures can only solve problems partially or temporarily, and it takes time to verify whether there are defects in the future. In order to ensure the smooth production of the factory, regular stop pump failure inspection and maintenance are not allowed. It is necessary to thoroughly check the operating conditions of the equipment during the downtime maintenance, root out the problems and switch maintenance according to the operating time during normal production. |
| Key words: LNG plant decarbonization lean liquid pump quantitative analytic hierarchy process |
