瓦斯发电立式气液分离装置设计  

Design of vertical gas-liquid separation device for gas power generation

作　　者：黄克海[1,2] HUANG Ke-hai(State Key Laboratory of Gas Disaster Monitoring and Emergency Technology,Chongqing 400037,China;China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400039,China)

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中国煤炭科工集团重庆研究院有限公司,重庆400039

出　　处：《煤炭工程》2022年第12期205-208,共4页Coal Engineering

摘　　要：为提高发电效率,保护瓦斯发电机组,在瓦斯气进入发电机组前需要分离出瓦斯气体中的液态水。首先分析了不同气液分离机理的优缺点,据此设计了一种重力与丝网过滤相结合的立式气液分离装置;接着基于气相空间的气体上升速度等于液滴沉降速度80%开展了立式气液分离装置筒体直径设计;然后对气液分离装置的丝网进行了选型,最后开展了筒体高度设计。文中还结合山西兰能发电站DN500mm瓦斯输送管路工况参数,进行了气液分离装置设计,经计算:气液分离装置直径取1.3m;丝网选择公称直径为1.1m的SP型丝网除沫器;气液分离装置总高度为2.92m。In order to improve the power generation efficiency and protect the gas generator set,it is necessary to separate the liquid water in the gas before the gas enters the generator set.Firstly,the advantages and disadvantages of different gas-liquid separation mechanisms are analyzed,and a vertical gas-liquid separation device combining gravity and screen filtration is designed.Then,the diameter design of vertical gas-liquid separation device was carried out based on the fact that the gas rising velocity in the gas phase space was equal to 80%of the droplet settling velocity.Then the screen of the gas-liquid separation device was selected.Finally,the height of the device is designed.The gas-liquid separation device is designed according to the working parameters of the DN500 mm gas transmission pipeline in Shanxi Lanneng Power Station.The calculation shows that the diameter of the gas-liquid separation device is 1.3 m;SP type wire mesh demister with nominal diameter of 1.1 m shall be selected for wire mesh;the total height of the gas-liquid separation unit is 2.92 m.

关 键 词：瓦斯发电 气液分离 重力分离 丝网分离 

分 类 号：TD712.67[矿业工程—矿井通风与安全]