ON-SITE CLEANING METHOD FOR CATALYST ACTIVITY RECOVERY OF DEACTIVATED HYDRODESULFURIZATION CATALYST

• Main Authors: MARIA TERESA GOMES PEREZ, MARIA DEL ROSARIO SOCORRO LUNA RAMIREZ, GONZALO HERNANDEZ TAPIA, MARIA TERESA CORTEZ DE LA PAZ, LEONALDO DIAZ GARCIA, BLANCA LUCIA MEDELLIN RIVERA, ARICIA DEL RAYO JARAMILLO JACOB
• Format: Patent
• Language: English; Japanese
• Published: 06.10.2016
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

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