Abstract:

The technical path for reducing energy consumption of propane dehydrogenation process is discussed from four aspects: technological progress of direct dehydrogenation catalyst, technological optimization and innovation, oxidative dehydrogenation technology and low energy consumption propane propylene separation technology. The technical progress of direct dehydrogenation catalyst can improve the performance and life of the catalyst, thus improving the efficiency of the process and achieving the goal of reducing energy consumption. Adopting more suitable process conditions and types can effectively improve the energy efficiency of the process and reduce the energy consumption of feedstock heating and product separation. Although oxidative dehydrogenation can overcome the thermal-dynamic limits of direct dehydrogenation and avoid energy consumption causing by high reaction temperature, it still confronts the problems of low reaction selectivity and hard control of reaction depth. The process of propane-propylene separation has high energy consumption. The development of adsorption separation and membrane separation technology might bring a high efficient separation process with low energy consumption.

Key words: propane dehydrogenation, energy consumption, direct dehydrogenation, oxidative dehydrogenation, propane-propylene separation, metal-organic frameworks;

摘要：

从丙烷直接脱氢催化剂技术进步、工艺技术优化创新、氧化脱氢技术以及低能耗丙烷/丙烯分离技术4个方面探讨了丙烷脱氢工艺降低能耗的技术路径。丙烷直接脱氢催化剂的技术进步可以提高催化剂性能和寿命，从而提高工艺过程效率，实现降低能耗的目标。采用更加适宜的工艺条件和工艺类型，可以有效提高工艺过程的能效，降低原料加热和产物分离能耗。氧化脱氢可以有效克服直接脱氢热力学限制，避免高温过程产生较高的能耗，但面临着反应选择性差、反应过程不易控制的难题。丙烷/丙烯的分离过程能耗高，吸附分离和膜分离技术的开发有望实现低能耗的丙烷/丙烯高效分离。

关键词: 丙烷脱氢, 能耗, 直接脱氢, 氧化脱氢, 丙烷/丙烯分离, 金属-有机框架材料