| 壁面粗糙度对催化裂化烟气轮机内颗粒沉积影响的数值研究 |
| |
| 引用本文： | 高晓薇,王建军,李玉铎,金有海.壁面粗糙度对催化裂化烟气轮机内颗粒沉积影响的数值研究[J].石油炼制与化工,2016,47(4):42-48. |
| |
| 作者姓名： | 高晓薇 王建军 李玉铎 金有海 |
| |
| 作者单位： | 中国石油大学（华东）化学工程学院 |
| |
| 基金项目： | 山东省自然科学基金项目 |
| |
| 摘 要： | 通过数值模拟的方法,采用标准k-ε湍流模型和离散相模型(DPM)对烟气轮机(简称烟机)内催化剂颗粒与壁面碰撞及其沉积过程进行研究,探究了壁面粗糙度对烟机内颗粒沉积的影响。结果表明,动叶片吸力面颗粒沉积明显比其压力面严重,吸力面上催化剂颗粒主要沉积在入口附近区域,压力面上催化剂颗粒主要沉积在机壳附近及轮毂靠近出口处;壁面粗糙度对动叶片不同位置颗粒沉积情况的影响不同;与清洁的防护涂层(粗糙度高度Ks=50μm)相比,Ks值在100~500μm之间时,烟机动叶片压力面催化剂颗粒沉积问题有所缓解,但吸力面上沉积情况恶化。
|
| 关 键 词： | 烟气轮机 壁面粗糙度 催化剂 沉积 数值模拟 |
| 收稿时间： | 2015-09-09 |
NUMERICAL SIMULATION OF EFFECT OF WALL ROUGHNESS ON PARTICLE DEPOSITION IN FCC FLUE GAS TURBINE |
| |
| Abstract: | The standard k-ε model and discrete particle model (DPM) were used to simulate the process of collision and deposition in FCC flue gas turbine. We mainly investigate the effects of surface roughness on particles deposition. The suction surface of blade has a significant deposition than pressure surface. The area near the inlet of blade on the suction surface deposit a lot, as well as the area near the casing and hub on the pressure surface. Compared with the coating surface without fouling, the wall roughness alleviates deposition of pressure surface when it is between 100 μm and 500 μm, but aggravates the deposition of suction surface. |
| |
| Keywords: | flue gas turbine wall roughness catalyst deposition numerical simulation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《石油炼制与化工》浏览原始摘要信息 |
|
点击此处可从《石油炼制与化工》下载全文 |
|
