10 万吨 / 年轻汽油醚化工业反应器设计

1. 10万吨/年轻汽油醚化工业反应器设计 • The Design of Etherification Reactor for FCC Light Gasoline Reporter: Supervisor: Wenjun Lv Feng Xin

2. Contents

3. 1.The Flow Chart and Design Task • The design of adiabatic reactors and control scheme • Heat Balance and Mass Balance

4. 2. The Design of Reactor • The composition of light gasoline

5. The rate law and some assumptions • The intrinsic rate law • Assumptions: • Substitute the ethanol of rate law for C6 for the methanol of that; • Neglect C7 components; • Substitute 2M2P for C3M2P , T3M2P and 1MCP.

6. The kinetic model • Consider circulation, axial diffusion coefficient at the base of PFR • Circulation • Back mixing The boundary condition:

7. The solution Calculate z,generate • Instrument: MATLAB and ASPEN • The algorithm for calculation Use Function File (bvp4c.m and bc.m) to calculate Initial value and Calculate, when . Then N N Y Output z and conversion Y Output and calculate

8. 3.The Selection of Process condition • The inlet and outlet temperature and reaction pressure is fixed • Consider the Circulation Ratio (the Circulation Ratio of First and Second Reactor , and the total Circulation Ratio ) and the methanol/olefin molar ratios (1.05, 1.15, 1.25 and 1.35). • Definition:

9. The First Reactor a The diameter of reactor is 1400mm; a The axial diffusion coefficient is 10m2/s; b The conversion is defined as total conversion.

10. The second reactor and the process

11. The length

12. The selection of process condition • Consider the conversion (>90%) and ; • Consider the length of reactor; • Consider the distillation column, the flow of distillate is 224kmol/h (=1) and 123.5kmol/h (=1) when =1.15.

13. 4. The next plans • The heat balance and mass balance • Control scheme and the treatment of • Find the references about data of etherification reactor • Find the references about simulation, improve the code and do some further research

14. THANKS !