摘要
采用已经建立的催化重整固定床反应器(Catalytic reforming fixed bed reactor,简称CRFBR)内传递及反应过程的综合数学模型,对工业固定床催化重整反应器进行数值模拟研究。考察了反应温度、反应压力、体积空速和氢/油体积比对产物组成的影响。结果表明,高反应温度、低反应压力可以提高产品的芳烃产率,但高反应温度会同时降低液体产物收率,低反应压力会加速催化剂上的积炭。体积空速和氢/油体积比的提高会导致液体产物收率增加和芳烃产率降低。在满足产品质量要求的条件下,各操作参数存在着最优值。引入芳烃产率和液体产物收率的变化量之积,即重整芳产液收积(KI)作为控制参数,以KI达极大值时的反应条件作为最佳反应器操作条件,为催化重整工艺条件的优化提供理论依据。
By employing the developed model for transfer and reforming reactions in catalytic reforming fixed bed reactor （CRFBR）, numerical simulations on commercial CRFBR were carried out. The effects of reaction temperature, reaction pressure, space velocity （LHSV） and the ratio of hydrogen and oil on the composition of products from CRFBR were investigated. The results showed that with reaction temperature increasing and reaction pressure decreasing, the aromatics yield increased. But liquid yield of products dropped at high temperature, and carbon could easily deposit on catalysts under low pressure. With space velocity and the ratio of hydrogen and oil increasing, the liquid yield of products increased and aromatics yield decreased. There are optimal operation conditions, under which the products fitting with quality requirement can be obtained. The product KI of aromatics yield variation and liquid product yield variation was introduced as the control parameter for catalytic reforming reaction. The optimal operation condition of reactors will be confined by maximum of KI, supplying theoretical basis for reforming process.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2008年第4期376-382,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
教育部新世纪优秀人才支持计划项目(NCET-04-0107)资助
关键词
催化重整
固定床
反应条件
数值模拟
芳烃产率
液体产物收率
catalytic reforming
fixed bed
reaction condition
numerical simulation
aromatics yield
liquid product yield
