Geometric Design Optimization of a Prototype Axial Gas-Liquid Cyclonic Separator
Geometric Design Optimization of a Prototype Axial Gas-Liquid Cyclonic Separator
复制标题
DOI：
10.1007/978-3-319-00191-3_27
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Luís Guerra;J. Trujillo;W. Blanco
中科院分区：
文献类型：
--
作者：
Luís Guerra;J. Trujillo;W. Blanco
如今，油气行业面临着新的挑战：新的海上油田位于更恶劣的环境中，距离海岸更远，在更深的水域，需要更紧凑和高效的工艺设施，以优化投资成本，然后保证这些新项目的经济可行性。另一方面，生产衰退的棕地经历了重大的工艺条件变化，这些变化通常对现有设施施加限制。这些设施的瓶颈需要改进工艺以提高其产能和效率，同时最大限度地减少可能导致不必要的更高运营成本的生产延迟。通常，在这两种情况下，部署解决方案都存在严重的空间限制，要求这些解决方案变得越来越紧凑。pdvsa - intervep已经确定需要一种紧凑、高效、高容量的分离技术来解决绿色和棕色气田潜在的气体洗涤问题，并开始开发轴向气液旋流器来满足这些需求。该分离器由流动调节段、涡流产生段和分离段组成，分离段在出口有气相和液相的排出。在pdvsa - intervep的多相流循环装置中进行了广泛的规划、设计、建造和进一步的实验验证过程，以验证轴向旋风分离器的概念。作为实验验证的结果，几何设计的几个方面被确定为易于改进，以实现目标分离效率。为了提高该设备的性能，确定并解决的几何变量为：加入预分离室以去除进入设备的分离流，静态混合器以均匀化进入漩涡发生器的气液混合物，出于可构造目的的漩涡发生器配置，改进液体环形出口，气体回收，以及出口气体流量调节器配置。新设计是重新审视和评估最先进的轴向分离技术的综合过程的结果，结合了在概念演示测试和原型机械建模期间吸取的经验教训。考虑pdvsa - intervep多相流回路的运行包络线进行设计，对改进后的性能进行实验评估。
Oil and gas industry faces new challenges these days: new off-shore fields are located in harsher environments, at longer distances from shore, in deeper waters, demanding more compact and efficient process facilities, to optimize investment costs and then, to guarantee the economic feasibility of these new projects. On the other hand, brown fields with decaying production experience significant changing process conditions which usually impose constrains in existing facilities. The bottlenecking of these facilities requires process improvements to increase their capacity and efficiency, minimizing at the same time any production deferment which could translates into unwanted higher operational costs. Usually, in both cases there are severe space limitations to deploy solutions, demanding these solutions to become more and more compact. PDVSA-Intevep has identified the need for a compact, high efficiency, and high capacity separation technology to address potential gas scrubbing problems in both green and brown fields, and started the development of an axial gas liquid cyclone as an answer to these needs. The separator consists of a flow conditioning section, a swirl generator section, and a segregating section with a discharge for gas and liquid phases in the outlet. An extensive planning, design, construction, and further experimental validation process of a prototype was conducted in the multiphase flow loop facilities of PDVSA-Intevep to demonstrate the axial cyclone concept. As a result of the experimental validation, several aspects of geometrical design were identified to be susceptible to improvements in order to achieve target separation efficiency. The geometric variables identified and addressed in order to improve the performance of this equipment are: incorporating a pre-separation chamber to remove segregated flow incoming to the device, a static mixer to homogenize the gas liquid mixture incoming to the swirl generator, of swirl generator configuration for constructability purposes, improvement of the liquid annular outlet, gas recycle, and outlet gas flow conditioner configurations. The new design is the result of a comprehensive process of revisiting and evaluating the state-of-the-art of axial separation technologies, incorporating lessons learned during the concept demonstration tests and mechanistic modelling of the prototype. Design was conducted considering the operating envelope of the multiphase flow loop of PDVSA-Intevep, to carry out an experimental performance assessment of the incorporated improvements.