石油炼制与化工 ›› 2026, Vol. 57 ›› Issue (11): 52-57.

• 加工工艺 • 上一篇    下一篇

延迟焦化装置生产负极焦工艺研究

李卓   

  1. 中国石化工程建设有限公司
  • 收稿日期:2026-05-25 修回日期:2026-06-22 出版日期:2026-11-12 发布日期:2026-10-19
  • 通讯作者: 李卓 E-mail:lizhuo.sei@sinopec.com

PROCESS INVESTIGATION OF NEGATIVE ELECTRODE COKE PRODUCTION VIA DELAYED COKING

  • Received:2026-05-25 Revised:2026-06-22 Online:2026-11-12 Published:2026-10-19

摘要: 依托掺炼催化裂化油浆(简称催化油浆)延迟焦化装置的生产数据,分析了原料性质、操作条件对石油焦产品性质的影响。结果表明:催化油浆中的芳烃是提升焦炭比容量的核心组分,其提升效果受原料中(胶质+沥青质)含量的制约;当原料硫质量分数小于2%、金属质量分数为400~600 μg/g时,焦炭的比容量变化较小,硫和金属含量超标则使焦炭比容量显著劣化;适当提高循环比并与原料匹配、合理提升焦炭塔塔顶操作压力,有利于提高成焦质量。原料与工艺协同优化,可生产比容量为350 mA.h/g以上的优质负极焦。上述研究结果为工业装置优化生产条件提供了理论依据与技术参考。

关键词: 负极焦, 延迟焦化, 催化裂化油浆, 工艺条件

Abstract: Based on production data from delayed coking units incorporating catalytic cracking slurry, the effects of feedstock properties and operating conditions on petroleum coke quality indices were briefly analyzed. The results indicate that aromatic hydrocarbons in slurry serve as the key component enhancing the specific capacity of coke, whose effect is restricted by the content of resins and asphaltenes. A sulfur mass fraction below 2% and a metal mass fraction within 400—600 μg/g exert minor influence on specific capacity, whereas excessive contents lead to significant performance degradation. Properly increasing the recycle ratio in accordance with feedstock characteristics and moderately elevating the coke drum top pressure are conducive to improving coke quality. Synergistic optimization of feedstock and process enables the production of high-grade negative electrode coke with a specific capacity exceeding 350 mA.h/g, providing theoretical support and technical references for the optimization of industrial operations.

Key words: negative electrode coke, delayed coking, catalytic cracking slurry, process conditions