Method for deoxidizing iron base catalyst of Fisher-Tropsch synthesis in slurry bed
An iron-based catalyst and Fischer-Tropsch synthesis technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of unsuitable slurry bed reactors, etc., and achieve strong anti-wear performance, Good stability and high activity
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Embodiment 1
[0029] 1. Add 350 grams of hydrocarbon liquid medium with a boiling point greater than 340 ° C and 20 grams of industrial fresh produced by coprecipitation into 1 liter of mechanically stirred slurry bed reactor. The composition is 100Fe / 4Cu / 4K / 20SiO 2 Catalyst, mechanically stirred to make fresh Fe / Cu / K / SiO 2 The catalyst is uniformly suspended in the hydrocarbon liquid medium.
[0030] 2. Using syngas H 2 / CO=0.70 (molar ratio) completely replace the air in the reactor at normal temperature and pressure, and the space velocity of the synthesis gas during the replacement is 1000h -1 .
[0031] 3. Using syngas H 2 / CO=0.70 (molar ratio) Raise the pressure of the reactor to 1.0MPa, and the space velocity of the syngas during the boost is 1000h -1 .
[0032] 4. Keep the space velocity and molar ratio of the synthesis gas constant, and start the in-situ reduction of the catalyst by temperature programming. First, heat up to 120°C at a heating rate of 1°C / min and stay at thi...
Embodiment 2
[0035] 1. Add 400 grams of hydrocarbon liquid medium with a boiling point greater than 340 °C and 30 grams of industrial spherical fresh weight ratio composition produced by a combination of continuous coprecipitation and spray drying molding into a 1-liter mechanically stirred slurry bed reactor 100Fe / 6Cu / 5K / 30SiO 2 Catalyst, mechanically stirred to make fresh Fe / Cu / K / SiO 2 The catalyst is uniformly suspended in the hydrocarbon liquid medium.
[0036] 2. Using syngas H 2 / CO=0.90 (molar ratio) completely replace the air in the reactor at normal temperature and pressure, and the space velocity of the synthesis gas during the replacement is 800h -1 .
[0037] 3. Using syngas H 2 / CO=0.90 (molar ratio) Raise the pressure of the reactor to 0.8MPa, and the space velocity of the synthesis gas during the boost is 800h -1 .
[0038] 4. Keep the space velocity and molar ratio of the synthesis gas constant, and start the in-situ reduction of the catalyst by temperature programmin...
Embodiment 3
[0041] 1. Add 500 grams of hydrocarbon liquid medium with a boiling point greater than 340 °C and 35 grams of industrial fresh produced by impregnation into 1 liter of mechanically stirred slurry bed reactor. The composition is 100Fe / 8Mn / 6Cu / 3K / 20SiO 2 Catalyst, mechanically stirred to make fresh Fe / Mn / Cu / K / SiO 2 The catalyst is uniformly suspended in the hydrocarbon liquid medium.
[0042] 2. Using syngas H 2 / CO=1.0 (molar ratio) completely replace the air in the reactor at normal temperature and pressure, and the space velocity of the synthesis gas during the replacement is 1000h -1 .
[0043] 3. Using syngas H 2 / CO=1.0 (molar ratio) Raise the pressure of the reactor to 0.4MPa, and the space velocity of the syngas during the boost is 1000h -1 .
[0044] 4. Keep the space velocity and molar ratio of the synthesis gas constant, and start the in-situ reduction of the catalyst by temperature programming. First heat up to 140°C at a heating rate of 1°C / min and stay at thi...
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