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›› 2004, Vol. 4 ›› Issue (2): 97-102.

• 流动与传递 • 上一篇    下一篇

高硫焦用强混反应器流动特性

王涛2,卢春喜,时铭显   

  1. 石油大学化工学院
  • 出版日期:2004-04-20 发布日期:2004-04-20

Flow Properties of High Sulfur Petroleum Coke in a Strong-mixing Reactor

WANG Tao2,LU Chun-xi,SHI Ming-xian   

  1. 石油大学化工学院
  • Online:2004-04-20 Published:2004-04-20

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被引次数

19

摘要： 根据炼油工业近年来流态化技术的发展及相关新技术的应用，设计了一套适合高硫焦燃烧特点的新型强混反应器冷态实验装置. 强混反应器主要由混合段和提升段两部分构成，两部分的设备结构尺寸分别为f240 mm′3000 mm和f70 mm ′9000 mm. 选取了适合工业应用的实验操作条件：提升段操作表观线速度6~20 m/s，颗粒循环速率20~230 kg/(m2.s). 系统考察了高硫焦模拟颗粒在混合段的流动特性. 通过对强混反应器轴、径向颗粒浓度和速度分布的实验测定，将强混反应器的混合段沿轴向分为两个区，沿径向分为两个或三个区，并提出用径向分布指数来表征颗粒浓度和速度的径向不均匀性.

关键词: 强混反应器, 混合段, 流动特性, 径向分布指数

Abstract: A new cold strong-mixing reactor for burning high sulfur coke was designed based on the development of fluidization and the application of correlative new technology. The reactor consists of a mixed zone and a lift zone. Experiments were systematically conducted to investigate hydrodynamic behaviors of the high sulfur coke simulating particles in the mixed zone, with superficial gas velocity from 6 to 20 m/s and solids circulating rate from 20 to 232 kg/(m2.s). The experimental results demonstrated that the mixed zone can be divided into two sections in the axial direction and two or three regions in the radial direction. A Uniformity Index of the Radial Distribution(UIRD) was proposed to characterize radial flow structures for solids local density and particle velocity.

Key words: strong-mixing reactor, mixed zone, flow properties, uniformity index of the radial distribution