摘要
重油催化裂解(DCC)副产石脑油组分复杂,富含芳烃、环烷烃和二烯烃,无法直接用于汽油调和,需对副产DCC石脑油加氢后进行分离获得高附加值产品。为减少设备投资和环保压力实现资源循环化利用,本试验在某工厂10万t/a苯抽提装置的产能基础上,注入加氢后的DCC副产石脑油,通过复杂原料适应性改造,最终获得合格的汽油和苯产品。试验中根据加氢后DCC副产石脑油的特点,通过调整汽提塔再沸器热负荷、抽提进料位置与回流芳烃位置和二次溶剂线补充溶剂等方法,探索一条资源利用DCC副产石脑油中高附加值产品的工艺路线。
By-product naphtha of heavy oil catalytic cracking(DCC)is complex in composition,rich in aromatics,cycloalkanes and dienes,which can not be directly used for gasoline blending.It is necessary to separate the DCC naphtha after hydrogenation to obtain high value-added products.In order to reduce equipment investment and environmental pressure and realize resource recycling,based on the benzene extraction unit with a original capcity of 100,000 t/a in a factory,a test injecting the hydrogenated DCC naphtha as feed was carried out.Through the adaptability modification of complex raw materials,qualified gasoline and benzene products were finally obtained.According to the characteristics of hydrogenated DCC naphtha,a process route for utilizing the high added value products in DCC naphtha was explored by adjusting the heat load of stripper reboiler,the positions of extraction feed and return aromatics,and the secondary solvent line to supplement the solvent.
作者
宁门翠
范凤鸣
陆平
白芳
华超
王艳虹
NING Men-cui;FAN Feng-ming;LU Ping;BAI Fang;HUA Chao;LIU Hui-zhou(Department of Environmental and Chemical Engineering,Kunming Metallurgy College,Kunming 650033,China;Key Laboratory of Green Process and Engineering,Institute of Process Engineering,C A S,Beijing 100190,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Petrochemical Engineering Co.,Ltd.,Beijing 100012,China;Zhongke Langfang Institute of Process Engineering,Hebei,065001,China)
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2019年第6期93-97,118,共6页
Natural Gas Chemical Industry
基金
中国科学院A类先导科技专项(XDA21030000)
十三五水体污染控制与治理科技重大专项(2017ZX07402001)
关键词
DCC石脑油
抽提
抽提蒸馏
芳烃回流比
DCC naphtha
extraction
extraction distillation
aromatic reflux ratio
