Fischer-Tropsch synthesis process applicable to fixed-bed reactor
A fixed-bed reactor, Fischer-Tropsch synthesis technology, applied in the petroleum industry, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc. High efficiency, high selectivity and high heat transfer efficiency
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Embodiment 1
[0030] Prepare the catalyst Co / La / Ir / Al according to the method described in Chinese patent CN102962077A: Prepare a certain amount of 0.5mol / L sodium aluminate aqueous solution, drop 2ml of ammonia water, keep the temperature at 65°C, and keep the time for 60min, then press the sol Add peptizer HNO at a molar ratio of 0.1:1 to sodium aluminate 3 , stirred and refluxed until a transparent sol was maintained for 3 hours, and then aged at room temperature for 12 hours to obtain a gel. The gel was dried in a drying oven at 105°C for 6 hours, then the dry gel was placed in a temperature-programmed microwave oven at a heating rate of 2°C / min, and calcined at 350°C for 10 hours to obtain a catalyst carrier. Weigh Co(NO 3 ) 2 ·6H 2 O, LaCl 3 ·7H 2 O and IrCl 3 ·3H 2 O, measure deionized water according to the equal-volume impregnation method, prepare a mixed salt solution and impregnate the above-mentioned carrier for 5 hours, then dry at 100°C for 6 hours, and finally roast at...
Embodiment 2
[0035] Prepare catalyst Co / TiO by the method described in patent CN101269328 2 , dissolve 9.06g cobalt nitrate in 350ml butanol and stir well, add a certain amount of octadecylamine (molar ratio C 18 -NH 3 / Co=3), fully dissolved, then added 6.8ml of water, and finally added 24ml of butyl titanate, continued to stir for 24 hours, then dried by rotary evaporation under reduced pressure, dried at 100°C, and finally roasted at 500°C for 6h to obtain the catalyst. The weight composition is Co:TiO 2 =25.5:100, pressed into tablets and sieved for later use.
[0036] Take 100ml of the catalyst of 20-40 mesh and install it in a fixed bed reactor with an inner diameter of 14mm and a bed height of about 900mm. The upper 1 / 3 section of the bed is diluted with aluminum balls / catalyst (v / v)=1:2, the middle 1 / 3 section of the bed is diluted with aluminum balls / catalyst (v / v)=1:9, and the bottom 1 / 3 of the bed is diluted with aluminum balls / catalyst (v / v)=1:9 / 3 segments are not diluted....
Embodiment 3
[0040] The catalyst Co / Re / Si was prepared according to the method described in Chinese patent CN101269336. Using porous starch gel as a template, weighed 10g of potato starch and added it to 100g of water, heated to 90°C and stirred for 10min. Place in a refrigerator for 12 hours and then dry at room temperature for 24 hours to obtain a porous starch gel with a regular structure. Preparation solution TEOS:EtOH:NH 3 :H 2 O: Co: Re = 1: 30: 0.15: 0.45: 0.02, the solution was stirred at room temperature for 8 hours, and then impregnated into the pores of the starch template in three steps (starch gel / starch gel + solution = 20 (wt%) )). Immerse each step for 12 hours and dry at 120°C for 24 hours. Finally, it was baked at 550°C for 8 hours in an air atmosphere to remove the starch template, and a SiO containing 7.5wt% Co, 2wt% Re, 2 70.5wt% of the catalyst, pressed into tablets and sieved for later use.
[0041] Take 100ml of the catalyst of 20-40 mesh and install it in a fi...
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