关键词: 原油, 脱钙剂, 电脱盐

Abstract: HF-101 decalcification agent developed by Dagang Petroleum Oilfield Chemicals Company was used to remove calcium from mixed Duba crude oil in Jinzhou Petrochemical Company, and its calcium removal performance was studied in laboratory and commercial unit. The laboratory test results showed that under the conditions of an agent to calcium mass ratio of 2, a water injection amount of 5%, an electrostatic desalt temperature of 130 ℃ and a demulsifier added dosage of 30 µg/g, the calcium removal rates of crude oil reached 90.89%～91.43%. Commercial trial results showed that using HF-101 agent the average calcium removal rate was 90.89%, the average calcium content of crude oil was 24.81 µg/g, the ash content of crude oil was reduced from 0.065% to 0.030%, the salt and water contents of the crude were reduced significantly. Besides, the operation electric current of the electrostatic desalt unit reduced about 50% when using HF-101 decalcification agent.

Key words: crude oil, decalcification agent, electrostatic desalt