摘要
为探讨丙烯精馏塔进料位置以及塔板数对能耗的影响,在控制最优进料位置变量的基础上,通过ProⅡ软件流程模拟与Origin软件数据拟合,得到一定进料组成时塔底重沸器负荷与塔板数的关联式,发现丙烯精馏塔的热负荷随着塔板数的增加而降低,且降低的幅度逐渐减小并最终到达极值。并结合公用工程与设备造价,为新建或改造丙烯精馏塔的具体方案提供一定的理论支持。在老厂改造时,可通过优化进料位置或增加塔板数,达到节能降耗及扩能增产的目的。
The influence of the feeding position and the number of trays on the energy consumption of the propylene fractionator was explored.Based on the control of the optimal feeding position variables,Pro Ⅱ process simulation and Origin data fitting were applied to obtain the relationship equation of the reboiler load and the number of trays for a certain feed composition.The results showed that the thermal load of the propylene fractionator decreased with the increase of the number of trays,and the decreasing amplitude gradually decreased and finally reached a extreme value.Combined with the cost of utility and equipment,the work can provide certain theoretical support for the specific plan for the new-built or reformed propylene fractionator.When the old factory is reconstructed,the purpose of capacity expanding or reducing energy consumption can be achieved by optimizing the feeding position or increa-sing the number of trays.
引文
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