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- Title
应对焦化石脑油加氢装置长周期运行的催化剂策略研究.
- Authors
陈 光; 徐大海; 丁 贺; 范思强
- Abstract
At present, in order to realize long-term stable operation of coking naphtha hydrogenation unit, two major problems need to be solved: high diolefin content in coking naphtha is easy to condense and coke at relatively high reaction temperatures, which leads to the rise of reactor pressure drop; silicon-containing additives used in the pre-processing stage can cause silicon dioxide deposition on the surface of the catalyst, resulting in fast deactivation and short operation cycle of catalyst. These strategies are proposed include the addition of low-temperature de-diolefin protection reactors to the process, the development of hydro-desilicification guard catalyst with strong silicon capacity and high activity hydrofining catalyst. The industrial application results show that the operation cycle of the coking naphtha hydrogenation unit is greatly extended, which provides technical support for the long cycle operation of the unit.
- Subjects
COKE (Coal product); PRESSURE drop (Fluid dynamics); SILICA; NAPHTHA; HIGH temperatures
- Publication
Petroleum Refinery Engineering, 2023, Vol 53, Issue 9, p42
- ISSN
1002-106X
- Publication type
Article