摘要
蒸汽辅助重力泄油(SAGD)或非SAGD的稠油/油砂开采工艺耗用大量的蒸汽,产生大量的含油废水。传统废水处理、回收和注汽蒸汽生产工艺流程复杂、回用水质差、劳动强度大、综合能效低。蒸发法处理稠油废水回用于注汽锅炉给水代替传统处理工艺在加拿大北阿尔伯达首次实现,并促成了汽包锅炉替代直流注汽锅炉的工艺优化。对蒸发法处理稠油废水生产高品质锅炉给水的工艺与传统处理工艺(石灰软化结合弱酸离子交换)进行了系统的比较和全面的经济性评价,同时对影响蒸发工艺的参数进行系统的分析,发现蒸发法稠油废水处理工艺具有流程简单、回用水质好、系统运行周期长、系统能耗低、经济性好等优势。进一步延伸该工艺可实现废水零排放。
Steam Assisted Gravity Drainage （SAGD） or non-SAGD heavy oil recovery process uses a large amount of highpressure steam and produces a significant amount of oily wastewater. Conventional water treatment and steam generation process is very complex, producing poor quality water for reuse and low energy efficiency etc. Using evaporation process to replace those conventional treatment processes was first emerging in North Albert, Canada. This eventually resulted in introducing conventional drum boilers to replace once-through steam generators to produce steam. This paper introduces the evaporation technology used to treat heavy oil wastewater and produce high quality boiler feed water. It also provides comparison data between evaporation and conventional processes （warm lime softening and weak acid cation ion exchange） from technical and operational aspects. Evaporation provides an alternate approach to produced water treatment, which is simpler, more cost effective, reliable, and reduces complexity of the steam generation system. Additional steps can he taken to recover all liquid waste streams for reuse in the plant, resulting in zero liquid discharge.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2008年第1期113-117,共5页
Petroleum Exploration and Development
关键词
稠油废水
蒸发处理
锅炉给水
零排放
heavy oil wastewater
evaporation
boiler feed water
zero liquid discharge
