湿气输送技术分析

从气体组成、烃露点相态、管道水合物生成条件和水露点四个方面分析并研究了掺混不同比例的克拉2气田湿气的天然气气质。介绍了湿气输送产生的危害,提出了编制并及时调整应急供气方案,增加气质监测次数,加密清管周期,提高压气站过滤分离器能力,提高压缩机燃气供气温度和干气密封温度等作为湿气输送的安全措施,指出了西气东输管道湿气输送应注意的问题。

Analysis on wet Natural Gas Transmission Technology of West-to-East Gas Transmission Pipeline

West-to-East Gas Transmission Pipeline was designed to deliver dry gas originally, and the pipeline would be supplied by several gas fields, in which, Kara 2 Gas Field was one of the gas suppliers. The pipeline began to deliver wet gas in June,2005 due to an accident. From the viewpoint of technology and safety,the problems in gas components,phase of hydrocarbon dew point,forming condition of hydrate and water dew point are analyzed and studied in order to transport the gas with different mixing ratio from Kara 2 Gas Field. To prevent against hazards in wet gas transmission, safety measures are provided, including timely change the schedule and gas supply emergency program, frequently regulate gas components, cut down pigging interval, enhance the capacity of filter's separator, rise the temperature of fuel gas to compressors and the temperature of dry gas seal.