晃动条件下胺法脱碳吸收塔结构设计优化研究

发布时间：2018-11-17 14:31

【摘要】：深海浮式天然气生产储卸装置(LNG-FPSO)技术,可以根据海上气田的生产状况进行灵活配置,能够节约运输成本,且不占用陆上空间,安全环保,满足国家远海开采油气的重大需求。吸收塔是FLNG上预处理工艺的核心设备,其运行情况对气体净化效果、气体品质及其经济效益等具有重大影响,特别是海上特殊的晃动工况对吸收塔的适应性提出了要求。研究液体分布器、填料段等吸收塔内重要部件受海洋晃动的影响特点并进行优化研究对提高吸收塔在海洋晃动工况下保持高效脱碳效果具有重要意义。本文针对液体分布器、填料段等重要吸收塔结构受晃动的影响状况开展研究工作,根据研究结果对相应塔内件进行结构优化研究。根据实验需求,设计并建设了一套晃动工况下胺法脱碳吸收塔冷模实验装置,该装置可以根据实验的要求实现对槽式液体分布器、排管式液体分布器、散堆填料、规整填料等塔内件静止及晃动条件下的性能研究。建立了槽式液体分布器、排管式液体分布器、散堆填料、规整填料的数值计算模型,进行了网格独立性验证并用实验数据验证了模型的准确性。本文选用幅度6°,周期10s的晃动工况利用数值计算的方法进行了晃动工况下槽式液体分布器、排管式液体分布器、散堆填料、规整填料的流场研究,利用胺法脱碳中试实验装置进行了填料支撑板的优化研究。根据晃动工况下胺法脱碳吸收塔内件内流场变化情况,分别进行了适应海洋晃动工况的优化研究。本文的研究工作为FLNG上吸收塔结构的模拟研究、实验研究以及工程设计提供借鉴。
[Abstract]:Deep-sea floating gas production storage and unloading (LNG-FPSO) technology can be configured flexibly according to the production conditions of offshore gas fields. It can save transportation cost, and does not occupy onshore space, so it is safe and environmentally friendly. To meet the country's offshore oil and gas extraction major demand. Absorption tower is the core equipment of pretreatment process on FLNG. Its operation condition has great influence on gas purification effect, gas quality and its economic benefit. Especially, the adaptability of absorption tower is required under special sloshing conditions on the sea. It is of great significance to study the influence of ocean sloshing on the important parts of absorber such as liquid distributor and packing section and to improve the decarburization efficiency of absorber under sea sloshing condition. In this paper, the influence of sloshing on the structure of liquid distributor, packing section and other important absorption tower structures is studied, and the structural optimization of the inner parts of the tower is carried out according to the results of the study. According to the experimental requirements, a set of cold model experimental device for amine decarbonization absorption tower under sloshing condition is designed and built. The device can realize the design of tank liquid distributor, row tube liquid distributor and bulk packing according to the requirements of the experiment. Study on the performance of uniform packing column under static and sloshing conditions. The numerical calculation models of slot liquid distributor, tubular liquid distributor, bulk packing and regular packing are established. The mesh independence is verified and the accuracy of the model is verified by experimental data. In this paper, the flow field of slot liquid distributor, row tube liquid distributor, bulk packing and regular packing under sloshing condition is studied by using numerical calculation method in the sloshing condition with amplitude 6 掳and cycle 10 s. In this paper, the optimization of packing support plate was studied by means of a pilot plant for amine decarbonization. According to the variation of the internal flow field in the carbon absorption tower with amine method under sloshing conditions, the optimization of ocean sloshing conditions was studied respectively. The research work in this paper provides a reference for the simulation, experimental research and engineering design of absorption tower structure on FLNG.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE95

【引证文献】