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3.5Mt/a重油催化裂化装置主分馏塔工艺模拟和操作状况分析
吴 宇，颜世闯 |
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Process
Simulation & Operation State Analysis of Main
Fractional Column of 3.5Mt/a Heavy Oil FCCU Wu Yu，Yan
Shichuang |
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[Abstract] The
process simulation for main fractional column of 3.5 Mt/a heavy oil FCCU
was based on the principal operation parameters and the property data
of material flow during standardization period adopting chemical process
simulation software Pro/Ⅱ，and the fluid mechanics assessment of column
tray conducted with the data from the process simulation.The result of
the simulation fits perfectly with the actual production situation.It
can be showed that there were more light components in recycle oil and
slurry oil.We should improve the separating effect of the section of tower
bottom.The result of fluid mechanics assessment for the float valve tower
plates over medium cycling showed that the jet flooding rate of several
tower plates under top cycling extracted plate was over 85% to the upper
limit of design，when their factors of system were at 0.9.While the liquid
velocity at the outlet of downcomer of top cycling return tray was 0.45/s
faster than the utmost liquid velocity recommended from domestic literatures，it
proved that there was too much load of liquid phase on tower top.Simulating
the tray structure under salt forming by reducing opening rate of tray
and bottom opening length of downcomer，and working out the fluid mechanics
state of salt forming situation， the salt forming phenomenon was analyzed
in principle.From the analysis，we can understand the principle and process
of the salt forming in fractional column by the assessment of fluid mechanics
of tray. [Keywords] the simulation of flow path；plate tower；salt forming |
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| 作者简介：吴宇，高级工程师，1992年毕业于抚顺石油学院石油加工专业，2000年在石油大学(北京)获工学硕士学位，一直从事催化裂化生产及工艺管理工作，现就职于中国石油大连石化公司技术发展处，任高级主管职务。 | ||||||||
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