关键词: 蒸汽辅助重力泄油技术, 汽包炉, 水质要求, 结垢, 腐蚀, 汽水共腾

Abstract: In order to obtain the requirements in feed water quality in the steam-assisted gravity drainage (SAGD) steam drum boiler under the conditions of high temperature and pressure，using weighting method，this research investigated the influences of hardness on the fouling，the effects of oil contents on steam and water priming，the influences of pH value and the O2 and CO2 contents on the corrosion of the tubes in boiler. The requirements of Fe and Cu in the feed water were also obtained based on the current feed water quality criterion. The operation conditions of the feed water quality requirements were obtained as well. Results demonstrated that when the estimated pressure in the SAGD steam drum boiler was at 10—14 MPa，the contents of dissolved O2，Cu，and the oil in the feed water were consistent with the labeled requirements of the boiler. The value of pH and hardness，contents of CO2 and Fe could be relaxed to a certain extend. The SAGD boiler can operate safely and stably when the pH value is at the range of 8.8－10，the amount of iron ≤30 μg/L，and the hardness ≤2 μmol/L.

Key words: steam-assisted gravity drainage(SAGD), steam drum boiler, water quality requirement, fouling, corrosion, steam and water priming