70 kt/a环管聚丙烯装置生产工艺优化

通过对70kt/a环管聚丙烯装置高、低负荷生产时单位生产利润的对比，提出了装置高负荷平稳生产的改进措施。实行高负荷生产后，装置的生产负荷南设计的9．7t／h提高到13．0t／h；与2001年同期相比．产量增幅达31．67％，丙烯单耗降低0．12％，能耗降低6.3％，经济效益提高1400万元。实践表明，生产负荷的提高是增加装置经济效益的最佳手段。

Optimization of production process of a 70 kt/a PP unit

An improvement measure was presented for stabilizing production of a 70 kt/a polypropylene (PP) loop reactor unit at high load in accordance with a comparison in unit production profit when operating at low and high load. The production load of the unit was raised from its designed value of 9.7 t/h to 13.0 t/h after performing the measure. Compared with the same period in 2001, the output of the unit was increased by 31.67% and the consumption of propylene monomer and energy was decreased by 0.12% and 6.3%, respectively. The economic profit was raised by 14 millions RMB. The production practice verifies that increasing production load is the best means for improving economic profit of the PP unit.