A kind of preparation method of single stage hydrocracking catalyst
A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as poor product properties, poor catalyst activity, and poor nitrogen resistance, and achieve high nitrogen resistance. , good active effect
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Embodiment 1
[0039] Molecular sieve modification process:
[0040] (1) Take 200g of NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.5mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the exchanged Y molecular sieve Na content in Na 2 O is calculated as 2.5%;
[0041] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 570°C and 0.2MPa for 2 hours;
[0042] (3) The molecular sieve obtained in step (2) was stirred and mixed with distilled water according to the liquid-solid ratio of 5:1, and then the temperature was raised to 90°C. During the stirring process, 400ml of 1.2mol / L aluminum sulfate solution was added, and the reaction was carried out at constant temperature for 3 hours.
[0043] (4) The molecular sieve obtained in step (3) was dried at 150°C for 8 hours;
[0044] (5) Take the molecular sieve obtained in step (4) and place it in a ...
Embodiment 2
[0054] Molecular sieve modification process:
[0055] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.8mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the Y molecular sieve after exchange Na content in Na 2 O is calculated as 2.0%.
[0056] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 570°C and 0.1MPa for 1 hour;
[0057] (3) The molecular sieve obtained in step (2) was stirred and mixed with distilled water according to the liquid-solid ratio of 6:1, and then the temperature was raised to 90°C. During the stirring process, 600ml of 1.5mol / L aluminum sulfate solution was added, and the reaction was carried out at constant temperature for 2 hours.
[0058] (4) The molecular sieve obtained in step (3) was dried at 200°C for 4 hours;
[0059] (5) soak the molecular sieve obtained in step (4) in heptene for 2 h...
Embodiment 3
[0069] Molecular sieve modification process:
[0070] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.8mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the Y molecular sieve after exchange Na content in Na 2 O is calculated as 2.0%.
[0071] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 550°C and 0.15MPa for 2 hours;
[0072] (3) The molecular sieve obtained in step (2) was stirred and mixed with distilled water according to the liquid-solid ratio of 6:1, and then the temperature was raised to 90°C. During the stirring process, 600ml of 1.0mol / L aluminum sulfate solution was added, and the reaction was carried out at constant temperature for 2 hours.
[0073] (4) The molecular sieve obtained in step (3) was dried at 250°C for 2 hours;
[0074] (5) soak the molecular sieve obtained in step (4) in heptene for 4...
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