关键词: 大型化, 加氢反应器, 内构件, 入口扩散器, 分配盘, 冷氢箱, 再分配盘, 新型冷氢盘

Abstract:

With the gradual enlargement of the hydrogenation unit, the traditional internals are prone to problems such as uneven material distribution and excessive occupancy of reactor space, seriously affecting the smooth operation of hydrogenation units and equipment investment. In order to improve logistics distribution and reduce the volume of internals, SINOPEC(Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd. has developed a new type of internals for hydrogenation reactors by optimizing the internals structure, including crud plates, shock reduction plates, and cold hydrogen tanks. The developed internal components have been successfully applied to a hydrocracking unit with a reactor diameter of 5.6 m. After the reactor diameter is expanded from 4.8 m to 5.8 m, the height between beds is only increased by 90 mm. The industrial application results of large-scale hydrogenation units indicate that the new internal component technology can significantly solve the problem of large radial temperature difference in large-scale reactors. Among them, the radial temperature difference of hydrogenation reactors of Sichuan Petrochemical and Lanzhou Petrochemical is less than 3 ℃. In the hydrocracking unit of Maoming Petrochemical, the radial temperature difference of the reactor inlet is less than 3 ℃, and the radial temperature difference of the bed is basically less than 4 ℃. For Shandong Hualong oil upgrading project, the radial temperature difference of refining reactor and cracking reactor is less than 3 ℃. The overall application result is good, which meets the production needs of enterprises.

Key words: large scale, hydrogenation reactor, internals, inlet diffuser, distribution disk, cold hydrogenbox, redistribution disk, new type of cold hydrogen disk