| 摘要: |
| 目的 解决常减压装置运行过程中长期存在的严重结垢问题。方法 在装置运行初期和末期分别加注了一种新开发的分散型抗垢剂HK-17DC,对其清垢、防垢效果进行了验证。结果 加注该药剂后,装置运行末期减三中流量逐渐增大,维持在120~125 t/h,较加抗垢剂前提高20~25 t/h,初底油换热温差明显改善,基本维持在61~63 ℃,较加抗垢剂前提高了12～24 ℃；装置运行初期,减三中流量保持在245~252 t/h,较检修前上个周期运行初期增加了约125 t/h；初底油换热温差保持在66~69 ℃,较检修前上个周期运行初期升高约16 ℃。结论 该抗垢剂在高温下表现出良好的清垢防垢性能,长周期运行效果稳定,且对产品质量无不良影响,解决了常减压装置存在已久的结垢问题。 |
| 关键词: 分散型抗垢剂 常减压蒸馏 清垢防垢 |
| DOI：10.3969/j.issn.1007-3426.2022.01.006 |
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| Industry application of new disperse anti-scaling agent in atmospheric and vacuum distillation unit |
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Lian Jinlong, Wei Hongbin, Jing Junjie
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PetroChina Changqing Petrochemical Company, Xianyang, Shaanxi, China
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| Abstract: |
| Objective To solve the serious scaling problem of the atmospheric and vacuum distillation unit during operation. Methods A new dispersive anti-scaling agent HK-17DC was added at the initial and end stage of the operation of the unit to evaluate its removal and anti-scaling effect. Results After adding the agent, the flow rate of the reflux in the third middle section of vacuum tower gradually increased and remained between 120-125 t/h, it is 20-25 t/h higher than before adding the agent, and the oil heat exchange temperature difference at the bottom of the primary distillation tower was significantly improved, basically maintained at 61-63 ℃ at the end of the unit operation. During the initial operation of the unit, it was 12-24 ℃ higher than before, the flow rate of the reflux in the third middle section of vacuum tower was maintained at 245-252 t/h, compared with the initial period of operation before maintenance, it increased by 125 t/h, and the temperature difference of oil heat exchange at the bottom of the primary distillation tower was maintained at 66-69 ℃, compared with the initial period of operation before maintenance, it increased by 16 ℃. Conclusion sAt high temperature, the anti-scaling agent showed good scale removal and anti-scaling performance, the long-term operation effect was stable and had no adverse effect on the product quality. It solved the scaling problem of atmospheric and vacuum distillation unit for a long time. |
| Key words: disperse anti-scaling agent atmospheric and vacuum distillation unit scale removal and anti-scaling |
