管道中烟道气流动传热及酸凝结规律  

FLUE GAS FLOW HEAT TRANSFER AND ACID CONDENSATION LAWS IN PIPELINE

作　　者：张丁涌[1] 李兆敏[1] 郭龙江[1] 麻涛[2] 秦国顺[1] 李松岩[1] 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国石油天然气管道局,河北廊坊065000

出　　处：《环境工程》2015年第1期80-84,99,共6页Environmental Engineering

基　　金：国家高科技研究发展计划(863计划)“注气辅助SAGD技术研究与现场试验”(2009AA06Z205)

摘　　要：针对注烟道气稠油热采中管道输送烟道气酸凝结问题,以连续性方程、能量方程和动量方程为基础建立了烟道气沿管道流动与传热计算模型,计算了烟道气沿管道的压力分布、温度分布和酸凝结点距离,分析了不同入口参数和烟道气成分对管道中烟道气的压力、温度、酸凝结点的影响。结果表明:SO3或水蒸汽含量增加时,烟道气酸凝结点温度提高,凝结点距离减小;入口烟道气压力提高,烟道气压降变小,温降不变,酸凝结点距离减小;入口烟温升高,压降和温降都增大,酸凝结点距离增大;保温层厚度增加,温降减小,酸凝结点距离增大。计算和分析结果表明:减少烟道气中SO3或水蒸汽含量可以有效地增大酸凝结点距离,减轻管道腐蚀问题。In order to solve flue gas acid condensation problems in the thermal recovery of heavy oil,heat transfer calculation model of flue gas along the pipe were established on the basis of continuity equation,energy equation and momentum equation,the flue gas pressure distribution along the pipeline,the temperature distribution and the position of the flue gas acid dew point were calculated,the different components of flue gas and inlet parameter effects on gas pressure,temperature and the acid dew point in pipe were analyzed. The results showed that with the SO3 or water vapor content increasing,the temperature that flue gas acid dew began to appear higher,the distance between condensation point and inlet reduced; The pressure of inlet flue gas increasing,pressure drop became smaller,temperature drop remained 0. 5 unchanged,acid dew point tended closer to the pipe inlet; the higher gas inlet temperature,the bigger pressure drop and temperature drop,the farther from the entrance to the acid dew point position; When insulation layer thickness increasing,the temperature drop decreaseed,and the distance gas start to condensates increased. Calculation and analysis results showed that the reducing SO3 or vapor content in the flue gas could effectively increase the acid dew point distance,reduce the pipeline corrosion problem.

关 键 词：烟道气 管道 传热 酸凝结点 三氧化硫 

分 类 号：X701[环境科学与工程—环境工程]