Abstract:

A refinery changed the original trickle bed hydrogenation reactor into the upflow hydrogenation reactor, and used the upflow reactor internal component technology(SLMG-Ⅰ), which was co-invented by Luoyang R&D Center of Technology of SINOPEC Engineering(Group) Co., Ltd. and SINOPEC Guangzhou Engineering Co., Ltd., successfully produced diesel in line with Guo Ⅵ standard. SLMG-Ⅰ gland grids is a new internal component of upflow hydrogenation reactor, which is a sandwich structure, the bottom and top are made of Johnson screens, the side wall is a sealing plate, and the space around them is filled with porcelain balls. The experimental results demonstrated that under the same conditions, the pressure drop of SLMG-Ⅰ gland grids was slightly greater than conventional gland grids and the difference of pressure drop was less than 1 kPa, and the pressure drop was not high; under different conditions, SLMG-Ⅰ gland grids was not clogged, indicating that its anti-clogging ability was strong; the catalyst leakage rate of the SLMG-Ⅰ gland grids was very low, indicating that the SLMG-Ⅰ gland grids had the excellent performance to prevent catalyst leakage. The industrial operation results showed that the pressure drop of the SLMG-Ⅰ gland grids was less than 5 kPa, and no catalyst was found in the refined diesel samples and the water samples from the high-pressure separator, further confirming its superior performance.

Key words: upflow, hydrogenation reactor, gland grids, pressure drop, catalyst leakage rate

摘要：

某炼油厂将现有的滴流床加氢反应器改造为上流式加氢反应器，选用中石化炼化工程(集团)股份有限公司洛阳技术研发中心(SEGR)和中石化广州工程有限公司(GPEC)合作开发的上流式加氢反应器内构件技术(SLMG-Ⅰ),成功生产出国Ⅵ柴油。SLMG-Ⅰ型压盖格栅是一种新型上流式加氢反应器内构件，为三明治结构，底部及顶部均为约翰逊网，侧壁为密封板，底部及顶部约翰逊网和侧壁密封板所围空间装填瓷球。试验结果表明：相同工况下SLMG-Ⅰ型压盖格栅的压力降略大于常规压盖格栅(压力降差小于1 kPa),压力降不高；不同工况下SLMG-Ⅰ型压盖格栅均没有被堵塞，抗堵塞能力强；SLMG-Ⅰ型压盖格栅的催化剂漏剂率极低，防跑剂性能好。实际工业运行结果显示，SLMG-Ⅰ型压盖格栅的压力降小于5 kPa,运行过程中精制柴油样品和高分水样品都不含催化剂，进一步证实了其卓越性能。

关键词: 上流式, 加氢反应器, 压盖格栅, 压力降, 漏剂率