ON-SITE CLEANING METHOD FOR CATALYST ACTIVITY RECOVERY OF DEACTIVATED HYDRODESULFURIZATION CATALYST
PROBLEM TO BE SOLVED: To provide a method for cleaning contaminated product of an industrial deactivated catalyst which is accumulated through utilization time on an outer surface of the catalyst by a primary light gas oil hydrogenation treatment.SOLUTION: There is provided a method for recovering a...
Saved in:
Main Authors | , , , , , , |
---|---|
Format | Patent |
Language | English Japanese |
Published |
06.10.2016
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | PROBLEM TO BE SOLVED: To provide a method for cleaning contaminated product of an industrial deactivated catalyst which is accumulated through utilization time on an outer surface of the catalyst by a primary light gas oil hydrogenation treatment.SOLUTION: There is provided a method for recovering a hydrodesulfurization activity of a deactivated catalyst on line including a) a step of introducing a flow of a solvent containing an industrial aromatic modified product into a floor, b) a step of increasing a temperature in a range of 30 to 70°C, preferably 40 to 60°C and more preferably 45 to 55°C, c) a step of introducing a flow of an inert gas into a cleaning system, where the inert gas may be preferably nitrogen, and further argon or helium can be used and d) a step of increasing pressure of nitrogen in a range of 30 to 80 kg/cm2, preferably between 45 to 70 kg/cm2, more preferably between 60 to 65 kg/cm2.SELECTED DRAWING: Figure 1
【課題】触媒の外表面に稼働時間を通じて蓄積する、プライマリーライトガスオイル水素化処理での工業的な失活触媒の汚染物質を洗浄する方法の提供。【解決手段】失活触媒の水素化脱硫活性をオンラインで回復させる方法であって、a)工業的芳香族型改質物を含む溶媒の流れを失活触媒の床内に導入するステップと、b)温度を30〜70℃、好ましくは40〜60℃、より好ましくは45〜55℃の範囲内で上昇させるステップと、c)不活性ガスの流れを洗浄系内に導入するステップであって、不活性ガスが好ましくは窒素でもよく、しかしアルゴン又はヘリウムも使用できるステップと、d)窒素の圧力を30〜80kg/cm2の範囲内で、好ましくは45〜70kg/cm2の間に、より好ましくは60〜65kg/cm2の間に増加させるステップと、を含む失活触媒の再生方法。【選択図】図1 |
---|---|
Bibliography: | Application Number: JP20150233778 |