Hydrofining catalyst and preparation method thereof
A hydrogenation refining and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve difficult molding, poor amorphous silica-alumina peptization, weak acidity of pure alumina carrier, etc. problems, achieve high acidity, good chemical stability and thermal stability, high hydrogenation activity and high desulfurization performance
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Embodiment 1
[0051] Configure 2L concentration as 100gAl 2 o 3 / L of sodium metaaluminate solution is placed in the glue tank, the temperature of the glue tank is controlled at 40°C, and 60v% CO is introduced under stirring conditions. 2 The mixed gas of +40v% air, the flow rate of carbon dioxide in the mixed gas is 2Nm 3 / h. When the pH value reaches 10.5, stop feeding the mixed gas, and then age for 25 minutes to obtain pseudo-boehmite slurry.
[0052] Configuration 4L concentration is 100gAl 2 o 3 / L of sodium metaaluminate solution is placed in the gel tank, then add 2L 100gSiO 2 / L of sodium silicate solution, control the temperature of the glue tank at 30°C, and feed 60v% CO 2 Mixed gas of +40v% air, CO in the mixed gas 2 The flow rate is 3Nm 3 / h, the pH at the end point was controlled to be 9.5, and the amorphous silicon-aluminum slurry was obtained by aging for 10 minutes.
[0053] Under the condition of constant stirring, add 3L amorphous silica-alumina slurry to 1L pseu...
Embodiment 2
[0056] The preparation of amorphous silica-alumina slurry was carried out according to Example 1.
[0057] Configure 2L concentration of 120gAl 2 o 3 / L of sodium metaaluminate solution, placed in the gel tank, the temperature of the gel tank is controlled at 35°C, and the concentration of 70v% CO is introduced under stirring conditions. 2 The mixed gas of +30v% air, the flow rate of carbon dioxide in the mixed gas is 4Nm 3 / h, stop feeding the mixed gas when the pH value reaches 10.0, and age for 25 minutes to obtain pseudo-boehmite slurry.
[0058] Under the condition of constant stirring, add 2L pseudo-boehmite slurry into 1.5L amorphous silicon-alumina slurry, control the mixing temperature at 40°C, age for 12min, filter and wash to Na + The content is less than 0.5%, and dried at 120° C. for 9 hours to obtain pseudo-boehmite containing amorphous silica-alumina.
[0059] Mix and knead pseudo-boehmite containing amorphous silicon-alumina with phosphoric acid, magnesium ...
Embodiment 3
[0061] The preparation of the pseudo-boehmite slurry was carried out according to Example 1.
[0062] Configure 2L concentration of 130gAl 2 o 3 / L sodium metaaluminate solution is placed in the gel tank, and then add 2L 80gSiO 2 / L of sodium silicate solution, control the reaction temperature at 20°C, and feed 50v% CO 2 Mixed gas of +50v% air, CO in the mixed gas 2 The flow rate is 5Nm 3 / h, the pH at the end point is controlled to be 9.0, and the amorphous silicon-aluminum slurry is obtained by aging for 20 minutes.
[0063] Under the condition of constant stirring, add 1L of pseudo-boehmite slurry and 3L of amorphous silicon-alumina slurry into the gel forming tank, control the mixing temperature at 35°C, age for 15min, filter and wash until Na + The content is less than 0.5%, and dried at 120°C for 8 hours to obtain pseudo-boehmite containing amorphous silica-alumina.
[0064] Mix and knead pseudo-boehmite containing amorphous silicon-alumina with phosphoric acid, li...
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