doi:10.16597/j.cnki.issn.1002-154x.2025.05.009
扬子石化裂解 C5、C9 高附加值产品利用研究
张明利
（中国石化扬子石油化工有限公司，南京 210048）
摘 要 裂解 C5、C9 作为石油化工行业的副产品，其产量大，传统处理方式多为废弃或低价值利用，不仅造成资源浪费，而且污染环境。因此，对裂解 C5、C9 进行综合利用可以大大提高经济效益和环保效益。目前，裂解 C5、C9 产品具有较好的开发市场，裂解 C5 通过抽提分离出异戊二烯（IP）、间戊二烯（PD）、环戊二烯（CPD）/双环戊二烯（DCPD）等组成，可生产异戊橡胶、丁基橡胶、C5 石油树脂等材料，广泛应用于医药中间体、树脂工业、合成橡胶等行业；裂解 C9 分离出 DCPD、萘、茚等组合，可生产高品质芳烃溶剂油、高纯度 DCPD 等产品，广泛用于精细化工、光学有机玻璃材料、环氧树脂、化工助剂等领域。以扬子石化 80 万吨·a 乙烯装置副产的裂解 C5、C9 产品为研究对象，结合扬子石化目前生产裂解 C5、C9 的现状，如年产量、各组分占比、利用途径等，借鉴同类型企业项目投产的经验，根据化工市场的行情波动，选择裂解 C5、C9 市场需求较好的产品加工路线，提升企业经济效益。
关键词 裂解 C5 裂解 C9 综合利用 经济效益
Research on the Utilization of High Value-Added Products from Yangzi Petrochemical’s Pyrolysis C5 and C9
ZHANG Mingli
(Sinopec Yangzi Petrochemical Co., Ltd., Nanjing 210048, China)
Abstract As by-products of the petrochemical industry , pyrolysis C5 and C9 have large production volumes. Traditional disposal methods often involve waste or low-value utilization , which not only leads to resource wastage but also causes environmental pollution. Therefore , research on the comprehensive utilization of pyrolysis C5 and C9 can significantly enhance their economic benefits and environmental effects. Currently , pyrolysis C5 and C9 products have promising market potential. Pyrolysis C5 can be separated into components such as isoprene ( IP ) , piperylene ( PD ) , and cyclopentadiene ( CPD ) /dicyclopentadiene ( DCPD ) through extraction. These components are used to produce materials like isoprene rubber , butyl rubber , and C5 petroleum resins , which are widely applied in pharmaceutical intermediates , resin industries , and synthetic rubber sectors. Pyrolysis C9 can be separated into components such as DCPD , naphthalene , and indene , which are used to produce high-quality aromatic solvent oils and high-purity DCPD. These products are extensively used in fine chemicals , optical organic glass materials , epoxy resins , and chemical additives. Taking the pyrolysis C5 and C9 by-products from the 800 kt · a ethylene plant of Yangzi Petrochemical as the research subject , this study combines the current production status of pyrolysis C5 and C9 at Yangzi Petrochemical , including annual production volume , component proportions , and utilization pathways. Drawing on the experience of similar enterprise projects and considering the fluctuations in the chemical market , the study selects processing routes for pyrolysis C5 and C9 products with favorable market prospects to enhance the economic benefits of the enterprise.
Keywords pyrolysis C5 pyrolysis C9 comprehensive utilization economic benefits